A chemical centrifugal pump with cleaning function

Abstract

This invention belongs to the field of centrifugal pump technology, specifically disclosing a chemical centrifugal pump with a cleaning function. It includes a pump casing with a dividing ring fixedly connected inside, dividing the inner cavity of the pump casing into a sludge collection chamber and a water collection chamber. A second impeller rotates inside the water collection chamber, and a first impeller rotates inside the sludge collection chamber. A transmission structure controlling the rotation of the first and second impellers is provided on the dividing ring. A collection chamber is connected to the receiving end of the pump casing, and a filter is fixedly connected to the inner cavity of the collection chamber. The filter divides the inner cavity of the collection chamber into a sludge suction chamber and a water suction chamber, with the inner sludge suction chamber and the inner cavity of the sludge collection chamber communicating. The filter in this centrifugal pump can divert the chemical wastewater collected in the collection chamber, allowing impurities in the chemical wastewater to enter the sludge collection chamber through the sludge suction chamber, while wastewater containing separated impurities can enter the water collection chamber through the water suction chamber. This enables the pump casing to drive the separation of chemical wastewater for external pipeline transportation.

Description

Technical Field

[0001] This invention belongs to the field of centrifugal pump technology, and specifically discloses a chemical centrifugal pump with a cleaning function. Background Technology

[0002] During the transportation of chemical wastewater, centrifugal pumps easily accumulate dirt and grime inside the impeller and pump casing. To ensure stable wastewater transport, regular cleaning of the centrifugal pump is necessary. While this method is effective in cleaning the pump, it still has some shortcomings in practical use, such as:

[0003] Existing centrifugal pumps do not have a good self-cleaning structure in actual use. When cleaning the dirt inside the centrifugal pump, the staff needs to stop using the pump to transport chemical wastewater and then disassemble the pump casing for cleaning. This means that the centrifugal pump cannot continue to transport chemical wastewater while cleaning dirt, which affects the pump's efficiency in transporting chemical wastewater. At the same time, the pump casing will wear down during frequent disassembly, which will reduce the actual service life of the pump casing and make it easy for chemical wastewater to leak from the inside of the pump casing.

[0004] To address this issue, we propose a centrifugal pump for chemical applications with a cleaning function. This solves the problem that when cleaning the internal contaminants of the centrifugal pump, workers need to temporarily stop using the pump to transport chemical wastewater. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a chemical centrifugal pump with a cleaning function to solve the problems mentioned above.

[0006] To achieve the above objectives, the present invention provides a chemical centrifugal pump with a cleaning function, comprising a pump casing, wherein a dividing ring is fixedly connected inside the pump casing, the dividing ring dividing the inner cavity of the pump casing into a sludge collection chamber and a water collection chamber, a second impeller rotating inside the water collection chamber, and a first impeller rotating inside the sludge collection chamber, the dividing ring being provided with a transmission structure for controlling the rotation of the first and second impellers, a collection chamber being connected to the receiving end of the pump casing, a filter plate being fixedly connected to the inner cavity of the collection chamber, the filter plate dividing the inner cavity of the collection chamber into a sludge suction chamber and a water suction chamber, the inner cavity of the sludge suction chamber communicating with the inner cavity of the sludge collection chamber, the inner cavity of the water suction chamber communicating with the inner cavity of the water collection chamber, and a discharge chamber being connected to the discharge end of the pump casing.

[0007] In the above technical solution, the end of the collection chamber away from the pump casing is fixedly connected to an external pipe, and the middle part of the discharge chamber is fixedly connected to a dividing plate, which is used to divide the inner cavity of the discharge chamber into a sewage discharge chamber and a drainage chamber.

[0008] In the above technical solution, a first discharge pipe and a second discharge pipe are fixed at one end of the discharge chamber away from the pump casing. The inner cavity of the sewage discharge chamber and the inner cavity of the second discharge pipe are connected. The inner cavity of the drainage chamber and the inner cavity of the first discharge pipe are connected.

[0009] In the above technical solution, the transmission structure further includes a connecting shaft fixed on the first impeller and a transmission shaft fixed on the second impeller. Both the connecting shaft and the transmission shaft pass through the pump casing. A sleeve is fixedly connected to the dividing ring, and the connecting shaft and the transmission shaft rotate inside the sleeve.

[0010] In the above technical solution, a mounting shell is fixedly connected to the sleeve, the sleeve is fixed by the mounting shell and the dividing ring, and an electromagnetic ring is fixedly connected to the inner wall of the sleeve.

[0011] In the above technical solution, a sleeve end is fixedly connected to one end of the transmission shaft near the connecting shaft, the sleeve end and the electromagnetic ring pass through each other, and a blocking head is fixedly connected to one end of the sleeve end near the connecting shaft.

[0012] In the above technical solution, a sliding sleeve is further fitted onto the blocking head, and a ring magnet is fixedly connected to one end of the sliding sleeve near the electromagnetic ring. The magnetic poles of the ring magnet and the magnetic poles of the electromagnetic ring repel each other. Mounting posts are fixedly connected at equal intervals on the blocking head, and the mounting posts and the sliding sleeve pass through each other. A limit end is fixedly connected to one end of the mounting post away from the blocking head, and a connecting spring is fitted onto the mounting post between the blocking head and the sliding sleeve.

[0013] In the above technical solution, the connecting shaft is further provided with a plug groove at one end near the transmission shaft rod, and a snap-fit ​​post is fixedly connected to the bottom wall of the inner cavity of the plug groove. The sliding sleeve is provided with a snap-fit ​​groove at one end near the connecting shaft.

[0014] In the above technical solution, a base is fixedly connected to the bottom of the pump casing, a drive motor is detachably connected to the base, a support shaft tube is fixedly connected to one end of the pump casing, the drive shaft rod and the support shaft tube pass through each other, and the end of the drive shaft rod away from the pump casing is fixed to the output shaft of the drive motor.

[0015] In the above technical solution, a fixed shell is sleeved at one end through which the connecting shaft and the pump housing pass. A mounting base is fixedly connected to the fixed shell. The mounting base is fixedly connected to the pump housing. A rotating column is fixedly connected to one end through which the connecting shaft and the fixed shell pass. The rotating column and the fixed shell are rotatably connected. A coil spring is fixedly connected between the rotating column and the fixed shell. A sealed bearing is sleeved at the part through which the connecting shaft and the fixed shell pass. A first sealing ring is sleeved on the outer ring of the sealed bearing. A second sealing ring is sleeved on the outside of the first sealing ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The filter in this centrifugal pump can divert the chemical wastewater collected in the collection chamber. It can make the turbidity in the chemical wastewater enter the interior of the sludge collection chamber through the sludge suction chamber, and at the same time, the wastewater that has separated the turbidity can enter the interior of the water collection chamber through the water suction chamber, thereby realizing the pump casing driving the separation of chemical wastewater and its transportation to the external pipeline.

[0018] 2. When the pump casing of this centrifugal pump separates and collects chemical wastewater, it can achieve the diversion and transportation of turbid matter in the chemical wastewater through the pump casing, avoiding the inability of the pump casing to quickly transport chemical wastewater when turbid matter is blocked inside the pump casing, thereby improving the pump casing's transportation efficiency for chemical wastewater.

[0019] 3. When the sludge collection chamber in the centrifugal pump collects turbidity, the output shaft of the drive motor can drive the connecting shaft to rotate through the drive shaft rod. At this time, the connecting shaft can drive the coil spring to store energy through the rotating column. The stored energy coil spring can drive the first impeller to rotate in the opposite direction inside the sludge collection chamber. The first impeller rotating in the opposite direction can disperse the turbidity inside the sludge collection chamber and prevent the turbidity from clogging inside the sludge collection chamber. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a diagram showing the connection structure between the support shaft tube and the pump casing in this invention;

[0022] Figure 3 This is a schematic diagram showing the connection between the first and second impellers and the pump casing in this invention;

[0023] Figure 4 for Figure 3 Axial side schematic diagram;

[0024] Figure 5 This is a diagram showing the connection structure between the dividing plate and the discharge chamber in this invention;

[0025] Figure 6 This is a schematic diagram showing the distribution of the first and second impellers in this invention;

[0026] Figure 7 This is a diagram showing the connection structure between the filter and the collection chamber in this invention;

[0027] Figure 8 This is a diagram showing the connection structure between the coil spring and the fixed shell in this invention;

[0028] Figure 9 for Figure 6 Cross-sectional structural diagram;

[0029] Figure 10 for Figure 9 A magnified view of A in the middle.

[0030] 1. Drive motor; 2. Base; 3. Pump casing; 31. Collection chamber; 311. Suction chamber; 312. Filter plate; 313. Sludge suction chamber; 32. Discharge chamber; 321. Sludge discharge chamber; 322. Dividing plate; 323. Drainage chamber; 33. External connecting pipe; 34. First discharge pipe; 35. Second discharge pipe; 36. First impeller; 37. Second impeller; 38. Sludge collection chamber; 39. Water collection chamber; 310. Dividing ring; 4. Support shaft tube; 41. Transmission 42. Shaft; 43. Sleeve end; 44. Stopping head; 5. Fixed shell; 51. First sealing ring; 52. Rotating column; 53. Coil spring; 54. Sealed bearing; 55. Connecting shaft; 56. Second sealing ring; 57. Mounting seat; 58. Insertion groove; 59. Snap-fit ​​column; 6. Sleeve tube; 61. Sliding sleeve; 62. Electromagnetic ring; 63. Mounting shell; 64. Ring magnet; 65. Limiting end; 66. Connecting spring; 67. Snap-fit ​​groove; 68. Mounting column. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0033] Example 1: Please refer to Figure 1-10 As shown, the present invention provides a technical solution:

[0034] This invention relates to a centrifugal pump for chemical applications with a cleaning function, comprising a pump casing 3, a dividing ring 310 fixedly connected inside the pump casing 3, the dividing ring 310 dividing the inner cavity of the pump casing 3 into a sludge collection chamber 38 and a water collection chamber 39, a second impeller 37 rotating inside the water collection chamber 39, and a first impeller 36 rotating inside the sludge collection chamber 38, the dividing ring 310 being provided with a transmission structure for controlling the rotation of the first impeller 36 and the second impeller 37, a collection chamber 31 connected to the receiving end of the pump casing 3, a filter 312 fixedly connected to the inner cavity of the collection chamber 31, the filter 312 dividing the inner cavity of the collection chamber 31 into a sludge suction chamber 313 and a water suction chamber 311, the inner cavity of the sludge suction chamber 313 communicating with the inner cavity of the sludge collection chamber 38, the inner cavity of the water suction chamber 311 communicating with the inner cavity of the water collection chamber 39, and a discharge chamber 32 connected to the discharge end of the pump casing 3;

[0035] In actual use, the collection chamber 31 is used to collect the chemical wastewater transported inside the external chemical wastewater conveying pipe. When the chemical wastewater enters the collection chamber 31, the filter plate 312 can filter the turbidity in the chemical wastewater. The wastewater that has been filtered of the turbidity will enter the water collection chamber 39 through the suction chamber 311, and the turbidity in the filtered wastewater will enter the sludge collection chamber 38 through the sludge suction chamber 313. This can realize that the transmission structure can separate and transport the turbidity and wastewater in the chemical wastewater through the pump casing 3, and avoid the pump casing 3 from being unable to transport the chemical wastewater when the turbidity is blocked inside the pump casing 3.

[0036] An external pipe 33 is fixedly connected to one end of the collection chamber 31 away from the pump casing 3, and a dividing plate 322 is fixedly connected to the middle of the discharge chamber 32. The dividing plate 322 is used to divide the inner cavity of the discharge chamber 32 into a sewage discharge chamber 321 and a drainage chamber 323.

[0037] The external connector 33 is used to connect to the chemical wastewater conveying pipeline. When in use, the external connector 33 can transport the chemical wastewater inside the chemical wastewater conveying pipeline to the inside of the collection chamber 31.

[0038] The discharge chamber 32 is fixed with a first discharge pipe 34 and a second discharge pipe 35 at one end away from the pump casing 3. The inner cavity of the sewage discharge chamber 321 is connected to the inner cavity of the second discharge pipe 35, and the inner cavity of the drainage chamber 323 is connected to the inner cavity of the first discharge pipe 34.

[0039] The sewage discharge chamber 321 is used to discharge the turbid matter separated inside the pump casing 3 into the second discharge pipe 35, and the drainage chamber 323 is used to discharge the sewage separated inside the pump casing 3 into the first discharge pipe 34. In actual use, the operator can connect the first discharge pipe 34 and the second discharge pipe 35 to the external collection pipe.

[0040] The transmission structure includes a connecting shaft 55 fixed on the first impeller 36 and a transmission shaft 41 fixed on the second impeller 37. Both the connecting shaft 55 and the transmission shaft 41 pass through the pump casing 3. A sleeve 6 is fixedly connected to the dividing ring 310. The connecting shaft 55 and the transmission shaft 41 rotate inside the sleeve 6.

[0041] When used under normal conditions, the output shaft of the drive motor 1 can drive the connecting shaft 55 to rotate through the drive shaft rod 41. At this time, the first impeller 36 and the second impeller 37 can rotate inside the pump casing 3, so that the first impeller 36 and the second impeller 37 can drive the chemical wastewater inside the pump casing 3 to be discharged.

[0042] Example 2: Please refer to Figure 3-10As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, in this embodiment, the electromagnetic ring 62 can drive the annular magnet 64 to move closer to the connecting shaft 55. At this time, the sliding sleeve 61 can be inserted into the insertion slot 58, thereby controlling the transmission shaft rod 41 to rotate through the first impeller 36 on the connecting shaft 55.

[0043] A mounting shell 63 is fixedly connected to the sleeve 6. The sleeve 6 is fixed by the mounting shell 63 and the dividing ring 310. An electromagnetic ring 62 is fixedly connected to the inner wall of the sleeve 6.

[0044] When the sleeve 6 is fixed by the mounting housing 63 and the dividing ring 310, the dividing ring 310 can drive the sleeve 6 to be firmly connected inside the pump housing 3.

[0045] A sleeve end 42 is fixedly connected to one end of the transmission shaft 41 near the connecting shaft 55. The sleeve end 42 and the electromagnetic ring 62 pass through each other. A blocking head 43 is fixedly connected to one end of the sleeve end 42 near the connecting shaft 55.

[0046] A sliding sleeve 61 is fitted onto the blocking head 43. A ring magnet 64 is fixedly connected to one end of the sliding sleeve 61 near the electromagnetic ring 62. The magnetic poles of the ring magnet 64 and the magnetic poles of the electromagnetic ring 62 repel each other. Mounting posts 68 are fixedly connected at equal intervals on the blocking head 43. The mounting posts 68 and the sliding sleeve 61 pass through each other. A limit end 65 is fixedly connected to one end of the mounting post 68 away from the blocking head 43. A connecting spring 66 is fitted onto the mounting post 68 between the blocking head 43 and the sliding sleeve 61.

[0047] The connecting shaft 55 has an insertion groove 58 at one end near the transmission shaft 41, and a snap-fit ​​post 59 is fixedly connected to the bottom wall of the inner cavity of the insertion groove 58. The sliding sleeve 61 has a snap-fit ​​groove 67 at one end near the connecting shaft 55.

[0048] When the electromagnetic ring 62 is working, it can drive the annular magnet 64 to move closer to the connecting shaft 55. At this time, the sliding sleeve 61 can be inserted into the insertion groove 58. Since the mounting post 68 and the sliding sleeve 61 are connected, the transmission shaft rod 41 can drive the mounting post 68 on the blocking head 43 to rotate through the sleeve end 42, thereby enabling the mounting post 68 to drive the sliding sleeve 61 to rotate. When the sliding sleeve 61 is engaged with the locking post 59 through the locking groove 67, the locking post 59 can drive the first impeller 36 to rotate through the connecting shaft 55.

[0049] A base 2 is fixedly connected to the bottom of the pump casing 3. A drive motor 1 is detachably connected to the base 2. A support shaft tube 4 is fixedly connected to one end of the pump casing 3. The drive shaft rod 41 and the support shaft tube 4 pass through each other. The end of the drive shaft rod 41 away from the pump casing 3 is fixed to the output shaft of the drive motor 1.

[0050] The output shaft of the drive motor 1 can drive the connecting shaft 55 to rotate through the drive shaft rod 41, thereby enabling the first impeller 36 and the second impeller 37 to rotate inside the pump casing 3.

[0051] A fixed housing 5 is sleeved at one end of the connecting shaft 55 and the pump housing 3. A mounting base 57 is fixedly connected to the fixed housing 5. The mounting base 57 is fixedly connected to the pump housing 3. A rotating column 52 is fixedly connected at one end of the connecting shaft 55 and the fixed housing 5. The rotating column 52 is rotatably connected to the fixed housing 5. A coil spring 53 is fixedly connected between the rotating column 52 and the fixed housing 5. A sealed bearing 54 is sleeved at the part of the connecting shaft 55 and the fixed housing 5. A first sealing ring 51 is sleeved on the outer ring of the sealed bearing 54. A second sealing ring 56 is sleeved on the outside of the first sealing ring 51.

[0052] When the connecting shaft 55 drives the rotating column 52 to rotate inside the fixed shell 5, the coil spring 53 can store energy and work. The repulsive force generated by the coil spring 53 can drive the first impeller 36 on the connecting shaft 55 to rotate in the opposite direction through the rotating column 52, thereby enabling the first impeller 36 to drive the dirt inside the pump shell 3 to be quickly stirred.

[0053] Working principle: In actual use, the external pipe 33 on the collection chamber 31 is used to collect the chemical wastewater transported inside the external chemical wastewater conveying pipe. When the chemical wastewater enters the collection chamber 31, the filter 312 can filter the turbidity in the chemical wastewater. The wastewater that has been filtered will enter the water collection chamber 39 through the suction chamber 311, and the turbidity of the filtered wastewater will enter the sludge collection chamber 38 through the sludge suction chamber 313. During this process, the output shaft of the drive motor 1 can drive the second impeller 37 to rotate inside the pump casing 3 through the drive shaft rod 41. The drive shaft rod 41 can drive the connecting shaft 55 to rotate through the sliding sleeve 61. At this time, the connecting shaft 55 can drive the first impeller 36 to rotate inside the pump casing 3. With the rotation of the first impeller 36 and the second impeller 37, the transmission structure can separate and transport the turbidity and wastewater in the chemical wastewater to the discharge chamber 32 through the pump casing 3. The turbidity inside the discharge chamber 32 can be discharged through the second discharge pipe 35, and the wastewater inside the discharge chamber 32 can be discharged through the first discharge pipe 34.

[0054] When the dirt inside the collection chamber 38 blocks the inside of the first impeller 36, the operator controls the electromagnetic ring 62 to not work. Since the magnetic poles of the electromagnetic ring 62 and the annular magnet 64 repel each other, the repulsive force generated by the connecting spring 66 can cause the sliding sleeve 61 and the connecting shaft 55 to separate. At this time, the sliding sleeve 61 cannot be inserted into the insertion slot 58. Since the mounting column 68 and the sliding sleeve 61 pass through, the coil spring 53 is not under force during this process. The repulsive force generated by the coil spring 53 can drive the first impeller 36 on the connecting shaft 55 to rotate in the opposite direction by rotating the column 52. This allows the first impeller 36 to drive the dirt inside the pump casing 3 to be quickly stirred, which can prevent the dirt from blocking the inside of the pump casing 3.

[0055] It should be noted that although the filter 312 can separate the turbidity and sewage in the chemical wastewater during use, a small amount of sewage will still carry the turbidity into the collection chamber 38 inside the suction chamber 313. When this part of sewage is rotated in the forward direction by the first impeller 36, the first impeller 36 can carry the turbidity through the sewage and discharge it through the discharge chamber 32. When the first impeller 36 rotates in the reverse direction, the first impeller 36 can also impact the turbidity through this part of sewage, thereby preventing the turbidity from clogging the inside of the collection chamber 38.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A centrifugal pump for chemical applications with a cleaning function, comprising a pump casing (3), characterized in that: A dividing ring (310) is fixedly connected inside the pump casing (3). The dividing ring (310) is used to divide the inner cavity of the pump casing (3) into a sludge collection chamber (38) and a water collection chamber (39). A second impeller (37) rotates inside the water collection chamber (39), and a first impeller (36) rotates inside the sludge collection chamber (38). A transmission structure for controlling the rotation of the first impeller (36) and the second impeller (37) is provided on the dividing ring (310). The receiving end is connected to a collection chamber (31), and a filter (312) is fixedly connected to the inner cavity of the collection chamber (31). The filter (312) is used to divide the inner cavity of the collection chamber (31) into a sludge suction chamber (313) and a water suction chamber (311). The inner cavity of the sludge suction chamber (313) is connected to the inner cavity of the sludge collection chamber (38), and the inner cavity of the water suction chamber (311) is connected to the inner cavity of the water collection chamber (39). The discharge end of the pump casing (3) is connected to a discharge chamber (32). The transmission structure includes a connecting shaft (55) fixed on the first impeller (36) and a transmission shaft (41) fixed on the second impeller (37). Both the connecting shaft (55) and the transmission shaft (41) pass through the pump casing (3). A sleeve (6) is fixedly connected to the dividing ring (310). The connecting shaft (55) and the transmission shaft (41) rotate inside the sleeve (6). A mounting shell (63) is fixedly connected to the sleeve (6), and the sleeve (6) is fixed by the mounting shell (63) and the dividing ring (310). An electromagnetic ring (62) is fixedly connected to the inner wall of the sleeve (6). The drive shaft (41) is fixedly connected to a sleeve end (42) at one end near the connecting shaft (55). The sleeve end (42) and the electromagnetic ring (62) pass through each other. A blocking head (43) is fixedly connected to the sleeve end (42) at one end near the connecting shaft (55). A sliding sleeve (61) is fitted onto the blocking head (43). A ring magnet (64) is fixedly connected to one end of the sliding sleeve (61) near the electromagnetic ring (62). The magnetic poles of the ring magnet (64) and the magnetic poles of the electromagnetic ring (62) repel each other. Mounting posts (68) are fixedly connected at equal intervals on the blocking head (43). The mounting posts (68) and the sliding sleeve (61) pass through each other. A limit end (65) is fixedly connected to one end of the mounting posts (68) away from the blocking head (43). A connecting spring (66) is fitted onto the mounting posts (68) between the blocking head (43) and the sliding sleeve (61).

2. A chemical centrifugal pump with a cleaning function according to claim 1, characterized in that, The collecting chamber (31) is fixedly connected to an external pipe (33) at one end away from the pump casing (3), and a dividing plate (322) is fixedly connected to the middle of the discharge chamber (32). The dividing plate (322) is used to divide the inner cavity of the discharge chamber (32) into a sewage discharge chamber (321) and a drainage chamber (323).

3. A chemical centrifugal pump with a cleaning function according to claim 2, characterized in that, The discharge chamber (32) is fixed with a first discharge pipe (34) and a second discharge pipe (35) at one end away from the pump casing (3). The inner cavity of the sewage discharge chamber (321) and the inner cavity of the second discharge pipe (35) are connected. The inner cavity of the drainage chamber (323) and the inner cavity of the first discharge pipe (34) are connected.

4. A chemical centrifugal pump with a cleaning function according to claim 1, characterized in that, The connecting shaft (55) has a insertion groove (58) at one end near the transmission shaft (41), and a snap-fit ​​post (59) is fixedly connected to the bottom wall of the inner cavity of the insertion groove (58). The sliding sleeve (61) has a snap-fit ​​groove (67) at one end near the connecting shaft (55).

5. A chemical centrifugal pump with a cleaning function according to claim 1, characterized in that, The bottom of the pump housing (3) is fixedly connected to a base (2), and a drive motor (1) is detachably connected to the base (2). One end of the pump housing (3) is fixedly connected to a support shaft tube (4). The drive shaft rod (41) and the support shaft tube (4) pass through each other. The end of the drive shaft rod (41) away from the pump housing (3) is fixed to the output shaft of the drive motor (1).

6. A chemical centrifugal pump with a cleaning function according to claim 1, characterized in that, A fixed shell (5) is sleeved at one end through which the connecting shaft (55) and the pump housing (3) pass. A mounting base (57) is fixedly connected to the fixed shell (5). The mounting base (57) and the pump housing (3) are fixedly connected. A rotating column (52) is fixedly connected at one end through which the connecting shaft (55) and the fixed shell (5). The rotating column (52) and the fixed shell (5) are rotatably connected. A coil spring (53) is fixedly connected between the rotating column (52) and the fixed shell (5). A sealed bearing (54) is sleeved at the part through which the connecting shaft (55) and the fixed shell (5) pass. A first sealing ring (51) is sleeved on the outer ring of the sealed bearing (54). A second sealing ring (56) is sleeved on the outside of the first sealing ring (51).

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