Slurry pump convenient to disassemble, assemble and maintain on site

Abstract

The invention relates to the technical field of solid-liquid conveying, and discloses a slurry pump convenient to disassemble, assemble and maintain on site, the slurry pump comprises an impeller and a sliding assembly arranged outside the impeller, the sliding assembly comprises a transmission rod fixedly connected to the outer wall of the impeller, and the outer wall of the transmission rod is fixedly connected with a sealing cover; square plates are fixedly connected to the outer wall of the sealing cover symmetrically about the axis of the transmission rod, round holes are symmetrically formed in the sides, away from the sealing cover, of the square plates, clamping blocks are slidably connected into the round holes, first springs are fixedly connected between the clamping blocks and the outer walls of the square plates, and vent grooves are formed in the transmission rod. The rubber ring expands under the action of internal high pressure and is tightly attached to the inner wall of the pump shell, so that liquid in the pump shell cannot escape outwards under the common blocking of the sealing cover and the rubber ring in the process of conveying slag liquid in the pump shell, the problem of slag liquid leakage caused by aging of a mechanical seal at the position of a pump shaft is solved, and the service life of the pump is prolonged. The service life of the equipment is prolonged; meanwhile, the maintenance frequency of the equipment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid transportation, in particular to a slurry pump which is convenient for on-site disassembly, assembly and maintenance. Background Art

[0002] A slurry pump is a machine that increases the energy of a solid-liquid mixture by the action of centrifugal force. It converts electrical energy into kinetic energy and potential energy of the medium. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Since the pressure above the liquid surface in the storage tank is greater than the pressure at the pump inlet, the liquid is continuously pressed into the impeller, thereby realizing pressurized transportation of the solid-liquid mixture. Slurry pumps are mainly suitable for mining, power plants, dredging, metallurgy, chemical industry, building materials, petroleum and other industries.

[0003] The impeller of the existing slurry pump is threadedly connected to the output shaft of the bracket. During the operation of the slurry pump, the conveyed slag liquid will impact the impeller inside the slurry pump, causing the impeller to wear or even dislocate, affecting the conveying efficiency when the impeller rotates. The connection between the impeller and the bracket inside the pump casing is protected by a mechanical seal sleeve. After long-term use of the equipment, the mechanical seal will not be able to effectively seal due to wear and aging, resulting in the problem of leakage of the slag liquid conveyed inside the equipment;

[0004] The solid-liquid mixed slag liquid will impact the pipeline during transportation in the pipeline. The shaking of the discharge pipe during the transportation process will cause the connection between it and the slurry pump to be dislocated and loose, resulting in the problem of dislocation between the discharge pipe and the slurry pump or even the discharge pipe falling off. The falling off of the pump body and pipeline under high pressure will pose a threat to the safety of surrounding workers.

[0005] Therefore, a slurry pump which is convenient for on-site disassembly and maintenance is proposed. Summary of the invention

[0006] The object of the present invention is to provide a slurry pump which is easy to disassemble and maintain on site, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a slurry pump that is easy to disassemble and maintain on site, comprises an impeller and a sliding assembly arranged outside the impeller, the sliding assembly comprises a transmission rod fixedly connected to the outer wall of the impeller, the outer wall of the transmission rod is fixedly connected to a sealing cover, the outer wall of the sealing cover is symmetrically fixedly connected to a square plate with the axis of the transmission rod, the square plate is symmetrically provided with circular holes on a side away from the sealing cover, the insides of the circular holes are slidably connected with clamping blocks, the clamping blocks and the outer wall of the square plate are fixedly connected with a first spring, the inside of the transmission rod is provided with a ventilation groove, the side wall of the sealing cover is fixedly connected with a rubber ring, the end of the transmission rod away from the impeller is slidably connected with a push rod, the push rod and the inner wall of the transmission rod are fixedly connected with a second spring, the inner wall of the impeller is slidably connected with a sliding cover on the side close to the transmission rod, and the sliding cover and the inner wall of the impeller are fixedly connected.

[0008] Preferably, the push rod and the inner wall of the transmission rod form a closed space between the inner cavity of the transmission rod, the sliding cover and the inner wall of the impeller form a closed space between the inner cavity of the impeller, the closed space formed by the push rod and the transmission rod, the closed space formed by the sliding cover and the impeller, the inner cavity and the circular hole of the rubber ring are all connected through the ventilation groove, and the side of the sliding cover away from the third spring is fixedly connected with a handle.

[0009] Preferably, a bracket is provided on the outside of the impeller, and a motor is provided on the outside of the bracket, the output shaft of the motor is penetrated and rotatably connected to the inside of the bracket, the output shaft of the motor is symmetrically provided with a first slide groove that is compatible with the square plate, the output shaft of the motor is symmetrically provided with a card slot that is compatible with the card block, the center of the output shaft of the motor is provided with a second slide groove that is compatible with the transmission rod, and the inside of the output shaft of the motor is provided with a third slide groove that is compatible with the push rod.

[0010] Preferably, the outer wall of the impeller is sleeved with a pump casing, a connecting tube is fixedly connected between the pump casing and the bracket, an inlet pipe is fixedly connected to the side of the pump casing away from the bracket, and a drainage ring is fixedly connected to the inside of the inlet pipe.

[0011] Preferably, the pump housing is provided with a discharge port at the top, the pump housing is provided with a clamping mechanism at the top and located on the discharge port, the clamping mechanism comprises a base fixedly connected to the top of the pump housing, the outer wall of the base is symmetrically fixedly connected to the fixing seat, the top of the fixing seat is rotatably connected to a first clamping plate, the first clamping plate and the fixing seat rotation connection are sleeved with a fourth spring, the outer wall of the fixing seat is symmetrically fixedly connected to a slide rail on both sides, the top of the slide rail is symmetrically fixedly connected to a lever, the outer wall of the lever is in conflict with the outer wall of the first clamping plate, the outer wall of the lever is rotatably connected to a connecting rod, the end of the connecting rod away from the lever is rotatably connected to a slide plate, the slide plate is slidably connected to the inside of the slide rail, the outer wall of the base is symmetrically rotatably connected to a second clamping plate, the side of the slide plate close to the second clamping plate is in conflict with the outer wall of the second clamping plate, the side of the second clamping plate close to the base is symmetrically fixedly connected to a round rod, the outer wall of the base is symmetrically fixedly connected to a toothed plate, the outer wall of the base and a first circular groove is symmetrically provided on the side of the toothed plate away from the lever, and the outer wall of the base is symmetrically provided with a fourth spring.

[0012] Preferably, the round rod is clamped in the inside of the second circular groove, the second circular groove is horizontal to the rotation connection between the second clamping plate and the base, the opposite surfaces of the two tooth plates are perpendicular to the outer wall of the base, and the side of the tooth plate facing the fixed seat is an inclined surface.

[0013] Preferably, the drainage ring and the inner wall of the pump casing form a semi-arc groove inside the pump casing, and the side of the semi-arc groove close to the inlet pipe forms a thirty-degree angle with the inner wall of the inlet pipe, and the side of the semi-arc groove close to the impeller forms an angle of forty-five degrees with the inner wall of the inlet pipe.

[0014] Preferably, the transmission rod is slidably connected to the inside of the second slide groove, the push rod is slidably connected to the inside of the third slide groove and the end of the push rod close to the bracket is in conflict with the inner wall of the output shaft, the square plate is slidably connected to the inside of the first slide groove, and the clamping block is slidably connected to the inside of the clamping groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The rubber ring expands under the action of internal high pressure and fits tightly to the inner wall of the pump casing. Therefore, when the slag liquid is transported inside the pump casing, the liquid inside the pump casing cannot escape outward due to the joint blocking of the sealing cover and the rubber ring, reducing the problem of slag liquid leakage caused by aging of the mechanical seal at the pump shaft, increasing the service life of the equipment and reducing the maintenance frequency of the equipment.

[0017] 2. The semi-arc groove changes the flow direction and flow rate of part of the slag liquid, so that the slag liquid flowing into the pump casing slows down its flow rate, thereby protecting the impeller during operation, reducing the impact of solid matter in the slag liquid on the impeller, increasing the service life of the impeller, reducing the wear and dislocation problems caused by long-term impact on the impeller, and allowing the equipment to maintain its sealing ability during long-term use.

[0018] 3. The second clamping plate will assist in fixing the feed pipe during the rotation process, so that the feed pipe can reduce the shaking of the connection with the pump casing under the joint action of the first clamping plate and the second clamping plate, thereby improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is an exploded schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a partial schematic diagram of the impeller structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the overall structure of the sliding assembly of the present invention;

[0023] Figure 5 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 6 It is a partial cross-sectional schematic diagram of the sliding assembly structure of the present invention;

[0025] Figure 7 It is a schematic cross-sectional view of the sliding assembly structure of the present invention;

[0026] Figure 8 For the present invention Figure 7 A schematic diagram of the structure enlargement in the middle;

[0027] Fig. 9 It is a partial schematic diagram of the clamping mechanism structure of the present invention.

[0028] In the figure:

[0029] 1. Bracket; 2. Pump casing; 3. Impeller; 4. Sliding assembly; 5. Inlet pipe; 6. Clamping mechanism;

[0030] 21. drainage ring; 22. connecting tube;

[0031] 41. Transmission rod; 42. Sealing cover; 43. Square plate; 44. Block; 45. Round hole; 46. First spring; 47. Ventilation groove; 48. Rubber ring; 49. Push rod; 410. Second spring; 411. Sliding cover; 412. Third spring; 413. First slide groove; 414. Block; 415. Second slide groove; 416. Third slide groove;

[0032] 61. Base; 62. Fixed seat; 63. First clamping plate; 64. Fourth spring; 65. Slide rail; 66. Push rod; 67. Connecting rod; 68. Slide plate; 69. Second clamping plate; 610. Fifth spring; 611. Round rod; 612. Tooth plate; 613. First circular groove; 614. Second circular groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiments of the present invention

[0035] See also Figures 1 to 8 A slurry pump that is easy to disassemble and maintain on site, comprising an impeller 3 and a sliding assembly 4 arranged outside the impeller 3, the sliding assembly 4 comprising a transmission rod 41 fixedly connected to the outer wall of the impeller 3, the outer wall of the transmission rod 41 is fixedly connected to a sealing cover 42, the outer wall of the sealing cover 42 is symmetrically fixedly connected to a square plate 43 with the axis of the transmission rod 41, the square plate 43 is symmetrically opened with a circular hole 45 on one side away from the sealing cover 42, the inside of the circular hole 45 is slidably connected to a clamping block 44, the clamping block 44 and the square plate 43 are fixedly connected to the outer wall of the impeller 3, and the sealing cover 42 is fixedly connected to the outer wall of the impeller 3. A first spring 46 is fixedly connected between the outer walls of the plates 43, a ventilation groove 47 is provided inside the transmission rod 41, a rubber ring 48 is fixedly connected to the side wall of the sealing cover 42, a push rod 49 is slidably connected to the end of the transmission rod 41 away from the impeller 3, a second spring 410 is fixedly connected between the push rod 49 and the inner wall of the transmission rod 41, a sliding cover 411 is slidably connected to the side of the inner wall of the impeller 3 close to the transmission rod 41, and a third spring 412 is fixedly connected between the sliding cover 411 and the inner wall of the impeller 3.

[0036] A closed space is formed between the push rod 49 and the inner wall of the transmission rod 41 and the inner cavity of the transmission rod 41, and a closed space is formed between the sliding cover 411 and the inner wall of the impeller 3 and the inner cavity of the impeller 3. The closed space formed by the push rod 49 and the transmission rod 41, the closed space formed by the sliding cover 411 and the impeller 3, the inner cavity of the rubber ring 48 and the circular hole 45 are all connected through the ventilation groove 47, and a handle is fixedly connected to the side of the sliding cover 411 away from the third spring 412.

[0037] A bracket 1 is provided on the outside of the impeller 3, and a motor is provided on the outside of the bracket 1. The output shaft of the motor is rotatably connected to the inside of the bracket 1. A first slide groove 413 adapted to the square plate 43 is symmetrically provided on the output shaft of the motor, and a card slot 414 adapted to the block 44 is symmetrically provided on the output shaft of the motor. A second slide groove 415 adapted to the transmission rod 41 is provided at the center of the output shaft of the motor, and a third slide groove 416 adapted to the push rod 49 is provided inside the output shaft of the motor. The transmission rod 41 is slidably connected to the inside of the second slide groove 415, the push rod 49 is slidably connected to the inside of the third slide groove 416, and one end of the push rod 49 close to the bracket 1 is in conflict with the inner wall of the output shaft, the square plate 43 is slidably connected to the inside of the first slide groove 413, and the card block 44 is slidably connected to the inside of the card slot 414.

[0038] When the embodiment of the present invention is actually used:

[0039] When installing the equipment, the staff will open the pump housing 2 and insert the impeller 3 into the pump housing 2. The transmission rod 41 on the outer wall of the impeller 3 will pass through the pump housing 2 and be inserted into the motor output shaft during the movement of the impeller 3. During the movement of the transmission rod 41, the sealing cover 42 and the square plate 43 will move together. The square plate 43 will be inserted into the first slide groove 413 during the movement. The inclined surface of the block 44 is squeezed by the inner wall of the motor output shaft, so that the first groove between the block 44 and the square plate 43 The spring 46 is squeezed and elastically contracts, and the block 44 slides to the inside of the square plate 43. When the block 44 slides to the slot 414 inside the motor output shaft, the first spring 46 is no longer squeezed and pushes the block 44 to slide out of the square plate 43. At this time, the block 44 is engaged with the slot 414 and forms a limit for the transmission rod 41, so that the transmission rod 41 cannot slide to the side away from the bracket 1 inside the motor output shaft. When the transmission rod 41 slides to the inside of the motor output shaft, the push rod 49 will be squeezed by the bracket 1. The push rod 49 and the inner wall of the transmission rod 41 are compressed and elastically contracted, and the volume of the closed space formed by the push rod 49 and the inner wall of the transmission rod 41 in the inner cavity of the transmission rod 41 is reduced, so that the gas originally stored therein is transferred to the inside of the circular hole 45 and the rubber ring 48 through the ventilation groove 47. When the air is transferred to the inside of the circular hole 45, a high pressure is generated inside the circular hole 45. The block 44 is difficult to slide inside the square plate 43 under the action of the high pressure inside the circular hole 45, so that the card block 44 and the card groove 414 are more firmly connected. The gas entering the rubber ring 48 will cause the inside of the rubber ring 48 to generate a high pressure. The rubber ring 48 expands under the action of the internal high pressure and fits tightly to the inner wall of the pump housing 2. Therefore, in the process of conveying slag liquid inside the pump housing 2, the liquid inside the pump housing 2 cannot escape outward under the joint blocking of the sealing cover 42 and the rubber ring 48, thereby reducing the problem of slag liquid leakage caused by aging of the mechanical seal at the pump shaft, and increasing the service life of the equipment while reducing the maintenance frequency of the equipment.

[0040] When disassembling the equipment, the staff first disassembles the pump casing 2, and then pulls the sliding cover 411 toward the outer wall of the impeller 3. The third spring 412 elastically stretches because the sliding cover 411 slides outward from the inside of the impeller 3. During the sliding process, the volume of the sealing space formed by the sliding cover 411 and the impeller 3 increases, thereby generating negative pressure in its sealing space. At this time, the air inside the circular hole 45 and the rubber ring 48 will be extracted through the ventilation groove 47, so that the block 44 slides toward the inside of the square plate 43 and no longer engages with the slot 414 on the bracket 1. The rubber ring 48 shrinks due to the negative pressure and no longer fits with the inner wall of the pump casing 2. At this time, the transmission rod 41 is in a state where it can slide outward from the inside of the bracket 1. The staff continues to pull outward to remove the impeller 3 as a whole from the inside of the pump casing 2, thereby improving the efficiency of disassembly and assembly of the impeller 3.

[0041] See also Figure 7 The outer wall of the impeller 3 is sleeved with a pump casing 2, a connecting tube 22 is fixedly connected between the pump casing 2 and the bracket 1, the side of the pump casing 2 away from the bracket 1 is fixedly connected to the inlet pipe 5, the inside of the inlet pipe 5 is fixedly connected to the drainage ring 21, the drainage ring 21 and the inner wall of the pump casing 2 form a semi-arc groove inside the pump casing 2, the side of the semi-arc groove close to the inlet pipe 5 forms an angle of thirty degrees with the inner wall of the inlet pipe 5, and the side of the semi-arc groove close to the impeller 3 forms an angle of forty-five degrees with the inner wall of the inlet pipe 5.

[0042] When the embodiment of the present invention is actually used:

[0043] When the equipment is running, the slag liquid is rushed into the interior of the pump casing 2 at high speed through the inlet pipe 5. A large amount of solid matter remaining in the slag liquid enters the interior of the pump casing 2 and causes a strong impact on the impeller 3. The impeller 3 is prone to wear and dislocation in the long-term impact scenario, resulting in poor sealing and leakage. By setting the drainage ring 21 inside the inlet pipe 5, the liquid in the slag liquid will enter the semi-arc groove formed by the drainage ring 21 and the inner wall of the inlet pipe 5 when it is transported inside the inlet pipe 5. Because the inflow end of the semi-arc groove is at an angle of thirty degrees, the slag liquid that is in contact with the inner wall of the inlet pipe 5 will flow at high speed. The liquid flows into the semi-arc groove and then flows back to the inlet pipe 5 through the forty-five degree angle of the semi-arc groove. Since the width of the semi-arc groove is narrowed at the forty-five degree angle, the flow rate of the slag liquid in the semi-arc groove when it flows back to the inlet pipe 5 is accelerated. Therefore, the semi-arc groove changes the flow direction and flow rate of part of the slag liquid, so that the flow rate of the slag liquid flowing into the pump casing 2 is slowed down, thereby protecting the impeller 3 during operation, reducing the impact of solid matter in the slag liquid on the impeller 3, increasing the service life of the impeller 3, reducing the wear and dislocation problems caused by long-term impact on the impeller 3, and enabling the equipment to maintain its sealing ability under long-term use.

[0044] See also Fig. 9A discharge port is provided at the top of the pump housing 2, and a clamping mechanism 6 is provided at the top of the pump housing 2 and located on the discharge port. The clamping mechanism 6 includes a base 61 fixedly connected to the top of the pump housing 2, and the outer wall of the base 61 is symmetrically fixedly connected to a fixed seat 62, and the top of the fixed seat 62 is rotatably connected to a first clamping plate 63, and the first clamping plate 63 and the fixed seat 62 are both sleeved with a fourth spring 64 at the rotation connection. Both sides of the outer wall of the fixed seat 62 are symmetrically fixedly connected to slide rails 65, and the top of the slide rails 65 are rotatably connected to a lever 66, and the outer wall of the lever 66 conflicts with the outer wall of the first clamping plate 63, and the outer wall of the lever 66 is rotatably connected There is a connecting rod 67, and the end of the connecting rod 67 away from the lever 66 is rotatably connected to a slide plate 68, and the slide plate 68 is slidably connected to the inside of the slide rail 65. The outer wall of the base 61 is symmetrically rotatably connected to the second clamping plate 69, and the side of the slide plate 68 close to the second clamping plate 69 conflicts with the outer wall of the second clamping plate 69, and the side of the second clamping plate 69 close to the base 61 is symmetrically fixedly connected to a round rod 611, and the outer wall of the base 61 is symmetrically fixedly connected to a tooth plate 612, and the outer wall of the base 61 and the side of the tooth plate 612 away from the lever 66 are symmetrically provided with a first circular groove 613, and the outer wall of the base 61 is symmetrically provided with a fourth spring 64.

[0045] The round rod 611 is clamped in the inside of the second circular groove 614. The second circular groove 614 is horizontal with the rotation connection between the second clamping plate 69 and the base 61. The opposite surfaces of the two tooth plates 612 are perpendicular to the outer wall of the base 61. The side of the tooth plate 612 facing the fixed seat 62 is an inclined surface.

[0046] When the embodiment of the present invention is actually used:

[0047] The staff inserts the discharge pipe into the discharge port on the top of the pump housing 2, and then starts the impeller 3 to start the equipment to pump the slag liquid. When there are large solids remaining in the transported slag liquid, the discharge pipe will vibrate during feeding, which may cause the discharge pipe to fall off. The clamping mechanism 6 provided in the invention, when the discharge pipe vibrates, the first clamping plate 63 attached to the discharge pipe will vibrate together with the discharge pipe, and the vibration of the first clamping plate 63 causes the lever 66 to be squeezed and rotated, and when the lever 66 rotates, the slide plate 68 is caused to slide inside the slide rail 65 to the side close to the second clamping plate 69 through the connecting rod 67, and the sliding of the slide plate 68 causes the first clamping plate 63 to vibrate together with the first clamping plate 63 ... first clamping plate 63 is caused to vibrate together with the first clamping plate 63, and the first clamping plate 63 is caused to vibrate together with the first clamping plate 63, and the first clamping plate 63 is caused to vibrate together with the first clamping plate 63, and the first clamping plate 63 is caused to vibrate together with the first clamping plate 63, and the first clamping plate 63 is caused to vibrate together with the first clamping plate 63, and the first clamping plate 63 is caused to vibrate together with the first clamping plate 63, and the first clamping plate 63 is caused to vibrate together with the first clamp When the second clamping plate 69 is pushed, the fifth spring 610 also stretches elastically, and the round rod 611 moves outward with the second clamping plate 69 and disengages from the clamping state with the second circular groove 614. At this time, the torsion of the fifth spring 610 is released to drive the second clamping plate 69 to rotate upward. During the upward rotation of the second clamping plate 69, the round rod 611 will be clamped with the tooth plate 612 and limit the rotation direction of the second clamping plate 69. During the rotation process, the second clamping plate 69 will assist in fixing the feed pipe, so that under the joint action of the first clamping plate 63 and the second clamping plate 69, the feed pipe can reduce the shaking of the connection with the pump housing 2 and improve the stability of the connection.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slurry pump that is easy to disassemble and maintain on site, comprising an impeller (3) and a sliding assembly (4) arranged outside the impeller (3), characterized in that: The sliding assembly (4) comprises a transmission rod (41) fixedly connected to the outer wall of the impeller (3); the outer wall of the transmission rod (41) is fixedly connected to a sealing cover (42); the outer wall of the sealing cover (42) is symmetrically fixedly connected to a square plate (43) about the axis of the transmission rod (41); a side of the square plate (43) away from the sealing cover (42) is symmetrically provided with a circular hole (45); a clamping block (44) is slidably connected inside the circular hole (45); a first spring (46) is fixedly connected between the clamping block (44) and the outer wall of the square plate (43). ), a ventilation groove (47) is provided inside the transmission rod (41), a rubber ring (48) is fixedly connected to the side wall of the sealing cover (42), a push rod (49) is slidably connected to the end of the transmission rod (41) away from the impeller (3), a second spring (410) is fixedly connected between the push rod (49) and the inner wall of the transmission rod (41), a sliding cover (411) is slidably connected to the side of the inner wall of the impeller (3) close to the transmission rod (41), and a third spring (412) is fixedly connected between the sliding cover (411) and the inner wall of the impeller (3).

2. A slurry pump that is easy to disassemble and maintain on site according to claim 1, characterized in that: A closed space is formed between the push rod (49) and the inner wall of the transmission rod (41) and the inner cavity of the transmission rod (41); a closed space is formed between the slide cover (411) and the inner wall of the impeller (3) and the inner cavity of the impeller (3); the closed space formed by the push rod (49) and the transmission rod (41), the closed space formed by the slide cover (411) and the impeller (3), the inner cavity of the rubber ring (48) and the circular hole (45) are all connected via the ventilation groove (47); and a handle is fixedly connected to a side of the slide cover (411) away from the third spring (412).

3. A slurry pump that is easy to disassemble and maintain on site according to claim 1, characterized in that: A bracket (1) is arranged outside the impeller (3), a motor is arranged outside the bracket (1), an output shaft of the motor is rotatably connected to the inside of the bracket (1), a first slide groove (413) adapted to the square plate (43) is symmetrically provided on the output shaft of the motor, a clamping groove (414) adapted to the clamping block (44) is symmetrically provided on the output shaft of the motor, a second slide groove (415) adapted to the transmission rod (41) is provided at the center of the output shaft of the motor, and a third slide groove (416) adapted to the push rod (49) is provided inside the output shaft of the motor.

4. A slurry pump that is easy to disassemble and maintain on site according to claim 1, characterized in that: The outer wall of the impeller (3) is sleeved with a pump casing (2), a connecting tube (22) is fixedly connected between the pump casing (2) and the bracket (1), an inlet pipe (5) is fixedly connected to the side of the pump casing (2) away from the bracket (1), and a drainage ring (21) is fixedly connected to the inside of the inlet pipe (5).

5. A slurry pump that is easy to disassemble and maintain on site according to claim 4, characterized in that: The top of the pump housing (2) is provided with a discharge port, and a clamping mechanism (6) is provided at the top of the pump housing (2) and located on the discharge port, the clamping mechanism (6) comprises a base (61) fixedly connected to the top of the pump housing (2), the outer wall of the base (61) is symmetrically fixedly connected to a fixing seat (62), the top of the fixing seat (62) is rotatably connected to a first clamping plate (63), the first clamping plate (63) and the fixing seat (62) are both sleeved with a fourth spring (64), the outer walls of the fixing seat (62) are symmetrically fixedly connected to slide rails (65) on both sides, the top of the slide rails (65) are rotatably connected to a lever (66), the outer wall of the lever (66) is in conflict with the outer wall of the first clamping plate (63), and the outer wall of the lever (66) is rotatably connected to the fixing seat (62). A connecting rod (67) is provided, and one end of the connecting rod (67) away from the shifting rod (66) is rotatably connected to a slide plate (68), and the slide plate (68) is slidably connected to the inside of the slide rail (65). The outer wall of the base (61) is symmetrically rotatably connected to a second clamping plate (69), and the side of the slide plate (68) close to the second clamping plate (69) conflicts with the outer wall of the second clamping plate (69). The side of the second clamping plate (69) close to the base (61) is symmetrically fixedly connected to a round rod (611), and the outer wall of the base (61) is symmetrically fixedly connected to a tooth plate (612). The outer wall of the base (61) is symmetrically provided with a first circular groove (613) and is located on the side of the tooth plate (612) away from the shifting rod (66). The outer wall of the base (61) is symmetrically provided with a fourth spring (64).

6. A slurry pump that is easy to disassemble and maintain on site according to claim 5, characterized in that: The round rod (611) is clamped in the inside of the second circular groove (614), the second circular groove (614) is horizontal with the rotation connection between the second clamping plate (69) and the base (61), the opposite surfaces of the two tooth plates (612) are perpendicular to the outer wall of the base (61), and the side of the tooth plate (612) facing the fixed seat (62) is an inclined surface.

7. A slurry pump that is easy to disassemble and maintain on site according to claim 4, characterized in that: The drainage ring (21) and the inner wall of the pump casing (2) form a semi-arc-shaped through groove inside the pump casing (2); the side of the semi-arc-shaped through groove close to the inlet pipe (5) forms an angle of thirty degrees with the inner wall of the inlet pipe (5); the side of the semi-arc-shaped through groove close to the impeller (3) forms an angle of forty-five degrees with the inner wall of the inlet pipe (5).

8. The slurry pump that is easy to disassemble and maintain on site according to claim 3, characterized in that: The transmission rod (41) is slidably connected to the inside of the second slide groove (415), the push rod (49) is slidably connected to the inside of the third slide groove (416), and one end of the push rod (49) close to the bracket (1) is in contact with the inner wall of the output shaft, the square plate (43) is slidably connected to the inside of the first slide groove (413), and the clamping block (44) is slidably connected to the inside of the clamping groove (414).

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