营销专线:186-5387-8869                   186-0538-1019 联系电话:0538-6985399 公司传真:0538-6985399 公司地址:泰安市东开发区
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产品名称:DS系列多用途泥沙泵
所属分类:泥浆泵
产品简介:
DS系列多用途泥砂泵系单级、单吸、离心式泵。该泵在水力设计,过流部件采用抗磨蚀的高鉻耐磨合金铸造,具有高效、节能、耐磨、运行可靠等特点,适合输送含固体颗粒的强磨蚀的砂浆、灰浆、矿渣等,是比较理想的抽砂、送砂设备。
订购热线:186-5387-8869
产品详情
 一、概述 DS系列多用途泥砂泵系单级、单吸、离心式泵,按出口直径分为4寸,6寸,8寸,10寸,12寸,14寸,16寸,18寸,20寸等几大系列多种规格。该泵在水力设计,过流部件采用抗磨蚀的高鉻耐磨合金铸造,具有高效、节能、耐磨、运行可靠等特点,适合输送含固体颗粒的强磨蚀的砂浆、灰浆、矿渣等,输送的固液混合浓度可达到60%,是比较理想的抽砂、送砂设备,用户可根据实际工况采用单机或多机串联运行的方式达到远距离施工。

二、 结构特点1、DS系列多用途泥砂泵:泵体采用内外双层金属结构,泵壳为垂直中开,
出水口位置按45度间隔旋转安装。
2、轴封根据不同的工况选择适合的方式分为:副叶轮轴封、填料轴封和机
械密封。
3、采用闭式叶轮,耐磨性好,泵效率高。

 




三、 性能参数

           
泵型号 (Type)转速 (r/min)流量 (m³/H)扬程 (m)轴功率 (kw)效率 (%)必需汽蚀余量
(NPSH)r (m)
型号 (Type)配套功率/电压 (kw/v)
DS400-100  590103562.8293.160.4  5.8Y450-10355/6000
198859.4417.677.0Y500-10500/6000
233955.0455.676.9Y500-10560/6000
  490 86043.3167.960.4  4.4 Y450-12220/6000
165141.0239.477.0Y500-12315/6000
194337.9260.876.9Y500-12315/6000
   DS350-100    59091365.2243.066.7    4.1Y450-10315/6000
178559.7361.080.4Y500-10450/6000
182659.3365.480.7Y500-12450/6000
  490 75845.0139.366.7  3.0 Y450-12185/6000
148241.2206.880.4Y450-12250/6000
151740.9209.480.7Y450-12250/6000
DS350-95  59086758.8217.963.7  4.1Y450-10280/6000
169653.9321.677.4Y500-10400/6000
173553.5325.377.7Y500-10400/6000
  490 72040.6125.063.7  3.0 Y450-12185/6000
140837.2184.377.4Y450-12220/6000
144136.9186.477.7Y450-12220/6000
DS350-90  73092279.9290.369.1  5.7Y450-8355/6000
164873.6410.380.5Y500-8500/6000
184470.7436.281.4Y500-8560/6000
  590 74552.2153.369.1  3.9 Y450-10185/6000
133248.1216.780.5Y450-10280/6000
149046.2230.381.4Y450-10280/6000
DS350-85  73087171.3255.966.1  3.8Y450-8315/6000
155665.6358.777.5Y450-8450/6000
174263.1381.878.4Y450-8450/6000
  590 70446.6135.266.1  5.6 Y355L2-10160/380
125842.9189.677.5Y450-10220/6000
140841.2201.578.4Y500-10250/6000
DS350-70  980 126976.8368.672.0  7.0 Y450-6450/6000
211866.7480.980.0Y450-6630/6000
233364.0505.880.4Y450-6630/6000
  730 94542.6152.372.0  3.9 Y355L1-8185/380
157837.0198.880.0Y400-8250/6000
173835.5209.080.4Y400-8250/6000
   DS350-65    980 117866.2307.869.0  6.6 Y450-6400/6000
196757.5400.077.0Y450-6500/6000
216655.2420.777.4Y450-6500/6000
  730 87736.7127.069.0  3.7 Y355M2-8160/380
146531.9165.377.0Y355L2-8200/380
161430.6173.877.4Y400-8220/6000
DS350-56  98078946.0148.666.5  5.5 Y355M2-6185/380
141540.8195.680.4Y355L2-6250/380
156838.8204.880.9Y355L2-6250/380
  73058825.561.466.5  3.5 Y315M-875/380
105422.680.780.4Y315L2-8110/380
116821.584.580.9Y315L2-8110/380
DS300-103  730 734110.5366.360.3  4.3 Y450-8450/6000
1067106.7445.569.6Y500-8560/6000
157398.9568.774.5Y500-8710/6000
  590 59372.2193.460.3  2.8 Y450-10250/6000
86269.7235.169.6Y450-10280/6000
127164.6300.174.5Y450-10355/6000
DS300-96  73073693.7290.764.6  3.5Y450-8355/6000
107690.0356.474.0Y450-8450/6000
146684.5433.677.8Y500-8560/6000
  59059561.2153.564.6  5.5Y450-10185/6000
87058.8188.374.0Y450-10250/6000
118555.2229.077.8Y450-10280/6000
DS300-90  730 69082.4255.560.6  5.3 Y450-8315/6000
100979.1310.570.0Y450-8400/6000
137474.3376.773.8Y450-8450/6000
  590 55853.8134.960.6  3.4 Y355L2-10160/380
81651.7164.170.0Y450-10200/6000
111148.5198.873.8Y450-10250/6000
DS300-85  980752120.4446.059.1  5.5Y450-6560/6000
1248124.4587.272.0Y500-6710/6000
1504128.7652.375.6Y500-6800/6000
  73056071.4184.259.1  3.5Y400-8220/6000
93069.0242.772.0Y450-8315/6000
112066.8269.575.6Y450-8315/6000
DS300-83  980 734122.7422.158.1  5.5 Y450-6500/6000
1219118.6554.571.0Y500-6710/6000
1469114.8615.674.6Y500-6800/6000
  730 54768.1174.658.1  3.5 Y400-8220/6000
90865.8229.271.0Y400-8280/6000
109463.7254.474.6Y450-8315/6000
DS300-80  980708114.0391.856.1  5.4Y450-6500/6000
1175110.2511.169.0Y450-6630/6000
1416106.7566.772.6Y500-6710/6000
  73052763.2161.756.1  3.4Y400-8200/6000
87561.1211.069.0Y400-8280/6000
105459.2234.172.6Y400-8280/6000
DS300-75  980 60097.5255.762.3  4.1 Y400-6315/6000
110092.0362.676.0Y450-6450/6000
148083.2443.675.6Y450-6560/6000
  730 44754.1105.762.3  3.0 Y355M1-8132/380
81951.0149.776.0Y355L1-8185/380
110246.2183.475.6Y400-8220/6000
DS300-73  98058492.4239.761.3  4.1Y400-6280/6000
107187.2339.175.0Y400-6400/6000
144178.8415.574.6Y450-6500/6000
  73043551.399.161.3  3.0Y355M1-8132/380
79748.3139.875.0Y355L1-8185/380
107343.8171.674.6Y355L2-8200/380
DS300-70  980 56084.9218.359.3  3.9 Y400-6280/6000
102780.1306.973.0Y400-6400/6000
138172.5375.672.6Y450-6450/6000
  730 41747.190.259.3  2.9 Y315L2-8110/380
76444.4126.573.0Y315M2-8160/380
102940.2155.272.6Y315L1-8185/380
DS300-68  98054480.1203.558.3  3.7Y355-6250/6000
99775.6285.172.0Y400-6355/6000
134268.4349.171.6Y450-6450/6000
  73040544.584.258.3  2.7Y315L2-8110/380
74341.9117.872.0Y355M2-8160/380
99938.0 71.6Y355L1-8185/380
DS300-65  980 59771.0178.164.8  4.5 Y355-6220/6000
97066.2233.275.0Y400-6280/6000
124961.4271.676.9Y400-6315/6000
  730 44539.473.764.8  3.0 Y315L1-890/380
72336.796.375.0Y355M1-8132/380
93034.1112.376.9Y355M1-8132/380
DS300-63  98057966.7164.863.8  4.5Y355-6200/6000
94062.2215.274.0Y355-6250/6000
121157.7250.775.9Y400-6315/6000
  73043137.068.163.8  3.0Y315L1-890/380
70134.589.074.0Y315L2-8110/380
90132.0103.475.9Y355M1-8132/380
   DS300-60  98055160.5146.961.8  4.2Y355M2-6185/380
89556.4190.972.0Y355L2-6250/380
115352.3222.273.9Y400-6280/6000
  730 41133.660.761.8  2.8 Y315M-875/380
66731.379.072.0Y315L2-8110/380
85829.192.073.9Y315L2-8110/380
DS250-85  980441133.7321.150.0  5.0Y400-6400/6000
858128.2437.968.4Y450-6560/6000
907127.9448.170.5Y450-6560/6000
  73032974.2133.050.0  2.8Y355M2-8160/380
63971.1180.968.4Y400-8220/6000
67671.0185.470.5Y400-8220/6000
DS250-75  980 450102.9205.461.4  4.5 Y355-6250/6000
75095.7271.572.0Y400-6355/6000
90091.0306.472.8Y400-6355/6000
  730 33557.184.861.4  3.0 Y315L2-8110/380
55953.1112.372.0Y355M1-8132/380
67050.5126.672.8Y355M2-8160/380
DS250-73  98043897.5192.560.4  4.5Y355-6250/6000
73090.7254.071.0Y400-6315/6000
87686.2286.471.8Y400-6355/6000
  73032654.179.560.4  3.0Y315L2-8110/380
54450.3105.071.0Y355M1-8132/380
65247.8118.271.8Y355M2-8160/380
DS250-70  980 40986.4172.555.8  3.8 Y355M3-6200/380
73882.3230.771.7Y400-6280/6000
97677.6272.875.6Y400-6315/6000
  730 30547.971.355.8  2.8 Y315L1-890/380
55045.795.571.7Y355M1-8132/380
72743.1112.975.6Y355M1-8132/380
DS250-68  98039781.5160.854.8  3.8Y355M3-6200/380
71777.7214.670.7Y355-6250/6000
94873.2253.374.6Y400-6315/6000
  73029645.266.554.8  2.8Y315L1-890/380
53443.188.770.7Y315L2-8110/380
70640.7104.974.6Y355M1-8132/380
DS250-65  980 47072.0145.863.2  4.3 Y355M2-6185/380
82068.1197.577.0Y355-6250/6000
95065.6213.279.6Y355-6250/6000
  730 35040.060.363.2  2.5 Y315M-875/380
61137.881.777.0Y315L2-8110/380
70836.488.279.6Y315L2-8110/380
DS250-63  98045667.6135.062.2  4.3Y355M1-6160/380
79564.0182.376.0Y355-6220/6000
92161.6196.678.6Y355-6250/6000
  73033937.555.762.2  2.5Y315M-875/380
59235.575.376.0Y315L2-8110/380
68634.281.378.6Y315L2-8110/380
DS250-60  98043562.0114.064.4 Y315L2-6132/380
74058.0146.180.04.0Y355M2-6185/380
87055.5159.082.7 Y355M2-6185/380
  73032434.447.164.4  2.5Y315M-875/380
55132.260.480.0Y315L1-890/380
64830.865.782.7Y315L1-890/380
DS250-58  98042157.9104.763.4  4.0Y315L2-6132/380
71554.2133.679.0Y355M1-6160/380
84151.9145.581.7Y355M2-6185/380
  73031332.143.263.4  2.5Y315S-855/380
53330.155.379.0Y315M-875/380
62628.860.181.7Y315M-875/380
DS200-71  98028493.8133.954.2  4.0Y355M1-6160/380
48689.3174.367.8Y355L1-6220/380
55287.1188.469.5Y355L1-6220/380
  73021252.055.454.2  2.4Y355M1-875/380
36249.672.167.8Y315M2-890/380
41148.377.869.5Y355M2-890/380
DS200-70  98018691.295.448.4  3.0Y315L2-6132/380
28587.1115.858.4Y355M1-6160/380
40179.8139.962.3Y355M2-6185/380
  73013950.639.648.4  2.0Y315S-855/380
21248.347.758.4Y315M-875/380
29944.357.962.3Y315M-875/380
DS200-65  98030075.7112.055.2  4.0Y315L2-6132/380
50073.0144.169.0Y355M2-6185/380
60069.4161.570.2Y355M3-6200/380
  73022342.046.255.2  2.5Y315M-875/380
37240.559.569.0Y315M-875/380
44738.566.870.2Y315L1-890/380
DS200-63  98029171.1104.054.2  4.0Y315L2-6132/380
48568.6133.268.0Y355M1-6160/380
58265.2149.369.2Y355M2-6185/380
  73021639.542.954.2  2.5Y315S-855/380
36138.054.968.0Y315M-875/380
43336.261.769.2Y315M-875/380
DS200-60  98027063.580.258.2  3.8Y315L1-6110/380
47060.5107.672.0Y355L2-6132/380
55058.7117.974.6Y355M1-6160/380
  73020135.233.158.2  2.5Y280M-845/380
35033.644.572.0Y315S-855/380
41032.648.874.6Y315M-875/380
DS200-C58  98026861.078.756.6  3.2Y315L1-6110/380
45856.0105.566.2Y315L2-6132/380
59651.2120.369.1Y355M1-6160/380
  73020033.832.556.6  2.0Y280M-845/380
34131.143.666.2Y315S-855/380
44428.449.769.1Y315M-875/380
DS200-A58  98026159.373.757.2  3.8Y315M-690/380
45456.598.471.0Y315L2-6132/380
53254.9108.173.6Y315L2-6132/380
  73019432.930.457.2   2.5Y280S-837/380
33831.440.771.0Y315S-855/380
39630.544.773.6Y315S-855/380
DS200-57  98019056.363.246.1  2.9Y315M-690/380
30155.477.658.5Y315L1-6110/380
42752.992.466.6Y315L1-6110/380
  73014231.226.246.1  1.8Y280S-837/380
22430.732.058.5Y280M-845/380
31829.438.266.6Y315S-855/380
DS200-55  98024853.465.355.2  3.5Y315M-690/380
43150.886.469.0Y315L1-6110/380
50449.394.571.6Y315L1-6110/380
  73018429.626.955.2  2.3Y280S-837/380
32128.235.769.0Y280M-845/380
37627.439.271.6Y315S-855/380
DS200-50  98023043.142.663.3  3.0Y280M-655/380
38040.055.275.0Y315S-675/380
46037.861.776.8Y315S-675/380
  730 17123.917.663.3  2.5 Y250M-830/380
28322.222.875.0Y250M-830/380
34321.025.576.8Y280S-837/380
DS200-48  98022139.738.462.3  3.0Y280M-655/380
36536.949.674.0Y315S-675/380
44234.855.375.8Y315S-675/380
  730 16422.015.862.3  2.5 Y250M-822/380
27220.520.574.0Y250M-830/380
32919.422.975.8Y250M-830/380
DS200-42  148030062.880.264.0  4.5Y315S-4110/380
45058.096.174.0Y315M-4132/380
55054.3106.576.4Y315M-4132/380
  980 19927.523.364.0  2.2 Y225M-630/380
29825.427.974.0Y250M-637/380
36423.830.976.4Y280S-645/380
DS150-50  1480180100.285.757.3  4.5Y315S-4110/380
30095.2113.368.5Y315M-4132/380
36091.6131.768.2Y315L1-4160/380
  98011943.924.857.3  2.5Y225M-630/380
19941.733.068.5Y280S-645/380
23840.238.268.2Y280M-655/380
DS150-46  148016684.869.355.3  4.2Y280M-490/380
27680.490.966.5Y315S-4110/380
33177.5105.566.2Y315M-4132/380
  980 10937.220.055.3  2.3 Y255M-630/380
18335.326.566.5Y250M-637/380
21934.030.666.2Y250M-637/380
DS150-A42  148014070.850.353.7  4.0Y280S-475/380
24567.065.768.0Y280M-490/380
27565.569.770.4Y280M-490/380
  980 9331.014.653.7  2.5 Y200L2-622/380
16229.419.168.0Y225M-630/380
18228.720.270.4Y225M-630/380
   DS150G-42   14809670.735.651.9  2.8Y225M-445/380
14963.842.461.0Y250M-455/380
20556.349.763.2Y280S-475/380
  980 6431.010.451.9  1.8 Y180L-615/380
9928.012.461.0Y200L1-618.5/380
13624.714.563.2Y200L2-622/380
,DS150-B42  148017666.855.757.5  5.1Y280S-475/380
30960.573.369.5Y280M-490/380
36556.979.071.6Y280M-490/380
  980 11729.316.257.5  2.5 Y200L2-622/380
20526.521.369.5Y225M-630/380
24224.922.971.6Y225M-630/380
DS150-39  148013061.041.851.7  3.8Y250M-455/380
22857.854.466.0Y280S-475/380
25556.557.468.4Y280S-475/380
  980 8626.712.151.7  2.4 Y200L1-618.5/380
15025.415.766.0Y200L2-622/380
16924.716.668.4Y225M-630/380
DS150-36  148013049.528.960.7  3.5Y225S-437/380
22045.038.071.0Y250M-455/380
24543.440.471.6Y250M-455/380
  980 8621.78.460.7  2.0 Y180L-615/380
14619.711.071.0Y180L-615/380
16219.011.771.6Y200L1-618.5/380
DS150-33  148011941.623.058.7  3.2Y200L-430/380
20237.830.169.0Y225S-437/380
22536.532.169.6Y225M-445/380
  980 7918.26.758.7  1.8 Y160L-611/380
13416.68.869.0Y180L-615/380
14916.09.369.6Y180L-615/380
DS125-52  1480107109.882.538.8  4.3Y315S-4110/380
182105.5100.652.0Y315M-4132/380
24299.0115.956.3Y315L1-4160/380
  9807148.124.038.8  2.1Y225M-630/380
12146.329.352.0Y250M-637/380
16043.433.656.3Y280S-645/380
DS125-42  148013070.441.859.6  4.2Y250M-455/380
17067.247.965.0Y280S-475/380
20464.253.566.7Y280S-475/380
  980 8630.912.159.6  2.5 Y200L1-618.5/380
11329.514.065.0Y200L2-622/380
13528.115.566.7Y200L2-622/380
DS125-39  148012160.734.757.6  4.0Y225M-445/380
15857.939.563.0Y250M-455/380
18955.444.164.7Y250M-455/380
  9808026.610.157.6  2.4Y180L-615/380
10525.411.563.0Y200L1-618.5/380
12524.212.864.7Y200L1-618.5/380
DS125-36  14809851.423.658.2  3.7Y200L-430/380
14048.027.766.0Y225S-437/380
19042.732.667.7Y225M-445/380
  980 6522.56.858.2  2.5 Y160L-611/380
9321.08.166.0Y160L-611/380
12618.79.567.7Y180L-615/380
DS125-33  14809043.218.856.2  3.4Y200L-430/380
12840.321.964.0Y200L-430/380
17435.925.965.7Y225S-437/380
  9806018.95.556.2  2.3Y160M-67.5/380
8517.66.464.0Y160L-611/380
11615.77.565.7Y160L-611/380
DS100-30  14604734.87.956.2  3.0Y160M-411/380
6233.99.262.0Y160L-415/380
7932.010.863.5Y160L-415/380
  960 3115.02.356.2  2.0 Y132M1-64/380
4114.72.662.0Y132M2-65.5/380
5213.83.163.5Y132M2-65.5/380
DS100-27  14604228.26.054.2  2.7Y160M-411/380
5627.57.060.0Y160M-411/380
7125.98.161.5Y160M-411/380
  9602812.21.754.2  1.8Y132S-63/380
3711.92.060.0Y132M1-64/380
4711.22.361.5Y132M1-64/380
DS80-50  148057110.750.733.9  3.8Y280S-475/380
91105.560.942.9Y280S-475/380
11199.866.945.1Y280M-490/380
  980 3848.514.833.9  3.0 Y200L2-622/380
6046.317.642.9Y225M-630/380
7443.819.645.1Y225M-630/380
DS80-46  14804885.834.832.2  2.9Y225M-445/380
7782.341.441.7Y250M-455/380
9479.945.844.7Y250M-455/380
  9703136.99.732.2  1.4Y180L-615/380
5035.411.641.7Y180L-615/380
6234.313.044.7Y200L1-618.5/380
DS80-33  14802642.59.232.8  6.0Y160L-415/380
4040.010.740.6Y180M-418.5/380
5434.512.341.4Y180M-418.5/380
  960 1717.92.532.8  2.9 Y132M1-64/380
2616.82.940.6Y132M2-65.5/380
3514.53.341.4Y132M2-65.5/380
DS55-19  293016.357.16.539.2  4.9Y160M1-211/380
30.354.98.155.4Y160M1-211/380
34.953.78.758.8Y160M1-211/380
  14308.013.60.839.2  1.3Y90L-41.5/380
14.613.10.955.4Y90L-41.5/380
17.012.81.058.8Y100L1-42.2/380
DS55-17  29009.444.63.433.2  4.5Y132S1-25.5/380
17.942.74.249.5Y132S2-27.5/380
23.439.34.852.4Y132S2-27.5/380
  1400 4.510.30.433.2  2.5 Y801-40.55/380
8.69.90.549.5Y90S-41.1/380
11.39.10.552.4Y90S-41.1/380
四、使用说明
1、起动:起动前应按下列步骤检查整个机组。⑴泵应安放在牢固基础上,以承受泵的全部重量,消除振动,拧紧全部地脚螺栓。⑵管路阀门应有自己的支撑架,且应支撑牢固。泵法兰处有密封点,拧紧连接螺栓时应注意,不能过紧,以免损坏密封点。⑶用手按泵转动方向转动轴,轴转动时,不应有磨擦,否则调叶轮间隙。⑷检查电机转向,要保证泵按泵体上所标出的箭头方向转动。绝对禁止反转。⑸直联传动时,泵轴和电机轴应精确对中,皮带传动时泵轴和电机轴应平行,并调整槽轮位置,使其与槽带垂直,以免引起剧烈的振动和磨损。⑹轴封检查:检查轴封水量,水压是否合适,调节填料压盖压紧螺钉,以调节填料的松紧程度,调节轴封水,从填料压盖处的泄漏量一滴滴渗出为好,填料太紧,轴套易发热,同时耗费功率,填料太松则液体渗漏量太大。轴封水压一般高于泵出口压力35KPa,轴封水量一般建议按不同型号在0.15L/S-2.1L/S。装有机械密封的泵,在开泵前须先接通轴封水。
2、运转:⑴运转中应定期检查轴封水的压力和流量,及时调节填料压盖或更换填料,以保证始终有少量的清洁水通过轴。⑵定期检查轴承组件运转情况,开车前需往轴体注入20或30号润滑油,并在交管接头接好冷却水(18.5kw以下不须冷却水)。轴承润滑油量要适当,清洁,要定期添加或更换润滑油。⑶泵性能随着叶轮与护板间隙的增大效率降低,故应及时将叶轮向前调整,以保持一定间隙,使泵能保持在高效运行,当泵磨损到不能满足系统需要时,应更换易损件,定时拆检泵,估计易损件寿命,以免承磨件失效时对系统产生严重后果。
3、停泵:停泵前应尽可能使泵抽送一会清水,以清洗流经泵内的渣浆,然后依次关闭泵、闸门、轴封水和轴承体的冷却水。

五、 维修保养

1、轴封的维护:要定期检测密封水压和水量,要始终保持少量清洁水沿轴流过,定期调填料压盖,检查填料并定期更换填料。轴封水压,轴封水量应符合上述(轴封检查)要求。装有机械密封的泵,长期不使用时,机械密封部件应加注满N46号机油,以防止机械密封部件生锈及内部橡胶件失效。
2、叶轮的调节:为了保证泵高效运转,就必须及时调整叶轮与前护板的间隙,调节叶轮间隙时首先停泵,松开压紧轴承组件的螺栓,拧调整螺栓上的螺母,使轴承组件向前移动,同时用手转动轴按泵的转动方向旋转,直到叶轮与前护板摩擦为止,将前面刚拧紧的螺母放松半圈,再将调整螺栓上前面的螺母拧紧,使轴承组件后移,此时叶轮与前护板间隙在0.5
之间。调整后,在再次起动前须重新检查叶轮转动是否正常,轴承组件压紧螺栓是否拧紧,然后再起动泵。
3、轴承润滑:轴承组件在装配时, ,若装配正确,润滑油适量,维修及时,运转寿命会较长,维修人员应定期检修轴承组件,检查轴承组件及润滑油的情况,在运转中须定期添加或更换润滑油,间隙时间及注入的量与泵的转速、轴承规格、连续工作时间、泵的停开次数,周围环境和运转温度等许多因素有关,因此须逐渐积累经验,合理及时的加润滑油。
4、备有泵应每周将轴转动1/4圈,以使轴承均匀的承受静载荷和外部振动。
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