Vibration-proof and impact-resistant chemical pump

Abstract

The invention relates to the field of chemical pumps, and particularly discloses an anti-vibration and anti-impact chemical pump which comprises a pump shell, a water inlet formed in one end of the pump shell, a water outlet formed in the upper end of the pump shell and an impeller arranged on the inner side of one end of the pump shell. The filtering assembly comprises a filtering cylinder movably arranged on the inner side of the water inlet, the side, away from the impeller, of the filtering cylinder is open, a gap is formed between the outer portion of the filtering cylinder and the inner wall of the water inlet, and filtering grooves are evenly formed in the circumferential side wall of the filtering cylinder. According to the anti-vibration and anti-impact chemical pump, the arranged filter cartridge is of a barrel-shaped structure, a gap is formed between the filter cartridge and the inner wall of the water inlet, the filter grooves distributed in the circumferential direction can provide an annular filter face, compared with a traditional basket type filter, the filter area is increased, the unit area flow speed is reduced, impurities can be gathered at the tail end of an inner cavity of the filter cartridge due to water scouring, and the anti-vibration and anti-impact effects are achieved. The blockage risk is reduced.

Description

Technical Field

[0001] The present invention relates to the field of chemical pumps, and particularly to an anti-vibration and anti-impact chemical pump. Background Art

[0002] Chemical centrifugal pumps are core equipment for transporting corrosive, high-temperature or solid-particle-containing liquids in chemical production. They achieve medium transportation through the centrifugal force generated by the high-speed rotation of the impeller and are widely used in petrochemical, pharmaceutical, metallurgical and other fields. To reduce vibration problems during operation, the prior art usually sets rubber shock pads or damping springs at the pump body base to reduce the impact transmitted to the external structure by absorbing high-frequency vibration energy. However, such measures can only relieve the vibration transmitted mechanically and cannot eliminate the vibration source caused by the medium characteristics and internal flow pattern. Especially under complex working conditions, the shock absorption effect is limited.

[0003] Existing chemical centrifugal pumps have significant defects when dealing with solid-containing media: Solid particles, such as sand and metal chips, are easily introduced into the pump cavity along with the fluid. Some particles are attached to the impeller surface or embedded in the seal gap under the action of centrifugal force, resulting in an imbalance in the rotor mass distribution and inducing periodic vibration with the rotation frequency as the core. At the same time, the accumulation of particles in the flow channel will destroy the hydraulic balance, intensify turbulence and pressure pulsation, and even cause cavitation, forming broadband vibration. Although some equipment is provided with a basket filter at the inlet, its single-layer mesh structure has a limited filtration area and is arranged facing the water flow direction. Some impurities can fall under their own weight, but some impurities will adhere to or get stuck on the mesh surface under the impact of high-pressure fluid, thus easily blocking the mesh holes, and the mesh surface is prone to breakage due to pressure fatigue during long-term operation.

[0004] Therefore, it is necessary to propose an anti-vibration and anti-impact chemical pump to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects existing in the prior art. The present invention proposes an anti-vibration and anti-impact chemical pump, which solves the problem that the chemical pump in the prior art in the background art cannot eliminate the vibration source caused by the medium characteristics and internal flow pattern.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] An anti-vibration and anti-impact chemical pump includes a pump casing, a water inlet provided at one end of the pump casing, a water outlet provided at the upper end of the pump casing, and an impeller provided inside one end of the pump casing. A filtering assembly is provided inside the water inlet. The filtering assembly includes a filtering cylinder movably provided inside the water inlet. The side of the filtering cylinder away from the impeller is open, and a gap is formed between the outer part of the filtering cylinder and the inner wall of the water inlet. Filtering grooves are uniformly provided on the circumferential side wall of the filtering cylinder;

[0008] It further includes a self-cleaning component. The self-cleaning component includes a cleaning ring disposed inside the filter cartridge. The outer wall of the cleaning ring is slidably engaged with the filter cartridge, and the cleaning ring is integrally connected to the first convex ring. At the bottom of one end of the filter cartridge close to the impeller, a first through slot is provided. At one end of the bottom of the water inlet, a slag discharge port corresponding to the first through slot is provided. At the bottom of the inner cavity of the water inlet, a backing plate is provided, and the thickness of the backing plate is adapted to the thickness of the gap between the filter cartridge and the inner wall of the water inlet. A second through slot communicating with the slag discharge port is provided on the backing plate. In the initial state, the second through slot coincides with the first through slot. The filter slot is a rectangular strip-shaped structure and is parallel to the axis of the filter cartridge. On the circumferential outer wall of the cleaning ring, cleaning blocks corresponding to the filter slots one by one are uniformly provided. The cleaning blocks are slidably engaged with the filter slots. One end of the cleaning block close to the impeller is a slope, and the slope faces the inner direction of the filter cartridge. At one end of the inner side of the pump housing close to the water inlet, a driving component for driving the displacement of the filter cartridge is provided, and the driving component is coaxially linked with the impeller.

[0009] Preferably, the driving component includes a centrifugal disc disposed on the side of the impeller close to the filter cartridge. The centrifugal disc is a hollow structure. Along the axial direction of the centrifugal disc, a traction shaft is movably connected to the inner side of one end of the centrifugal disc close to the filter cartridge, and the end of the traction shaft away from the centrifugal disc is rotatably connected to the filter cartridge. Along the radial direction of the centrifugal disc, sliding arms are uniformly movably connected to the circumferential side wall of the centrifugal disc. On one end of the traction shaft located inside the centrifugal disc, traction plates are uniformly provided. An inclined guide slot is provided on the side wall of the traction plate. On one end of the sliding arm located inside the centrifugal disc, a guide wheel is provided for movably guiding and cooperating with the guide slot.

[0010] Preferably, a reset component is provided at one end of the filter cartridge away from the impeller. The reset component includes a first convex ring disposed on the inner wall of one end of the water inlet away from the impeller. A second convex ring corresponding to the first convex ring is provided on the outer wall of one end of the filter cartridge. A first guide pin is movably penetrated through the first convex ring. One end of the first guide pin is fixedly connected to the side wall of the second convex ring, and a first spring is sleeved on the other end.

[0011] Preferably, the sides of the first convex ring and the cleaning ring away from the impeller are both conical surfaces, and the conical surface on one side of the first convex ring is smoothly transitioned with the inner wall of the water inlet, and the conical surface on one side of the cleaning ring is smoothly transitioned with the inner wall of the filter cartridge.

[0012] Preferably, a guide shaft corresponding to the slope on the cleaning block is provided on the inner side of one end of the filter slot close to the impeller.

[0013] Preferably, a concentration assembly is provided at one end of the filter cartridge. The concentration assembly includes a floating arm vertically and movably arranged inside the filter cartridge near one end of the impeller. The floating arm corresponds to the first through groove. Rack teeth are symmetrically arranged on both sides of the upper end of the floating arm. A pair of gears meshing with the rack teeth are rotatably arranged inside the collection box near one end of the impeller on both sides of the floating arm. A swing rod is arranged at the lower end of the gear. A brush head corresponding to the inner wall of the filter cartridge is arranged at the bottom of the swing rod.

[0014] A jacking assembly for driving the floating arm to rise is arranged in the slag discharge port. The jacking assembly includes a driving plate vertically and movably arranged inside the slag discharge port and corresponding to the floating arm. The side of the upper end of the driving plate facing away from the impeller is an inclined surface. The upper end of the driving plate can extend upward through the second through groove. A second guide pin is arranged inside the slag discharge port. The lower end of the driving plate is movably sleeved outside the second guide pin, and a second spring located at the bottom of the driving plate is sleeved outside the lower end of the second guide pin.

[0015] Preferably, a roller is rotatably arranged at the upper end of the driving plate, and the top of the roller protrudes above the top end of the driving plate.

[0016] Preferably, a slider corresponding to the floating arm is fixedly arranged inside the collection box near one end of the impeller. A chute is arranged on one side of the floating arm. The floating arm is movably sleeved outside the slider through a traction plate. A guide post is vertically arranged inside the chute. The slider is movably sleeved outside the guide post.

[0017] A third spring located at the bottom of the slider is sleeved outside the lower end of the guide post.

[0018] Preferably, a collection box is detachably arranged at the lower end of the slag discharge port.

[0019] Preferably, a protective frame is arranged outside the pump housing.

[0020] Compared with the prior art, the beneficial effects of the present invention include:

[0021] 1. For this anti-vibration and anti-impact chemical pump, the filter cartridge is arranged in a barrel shape with a gap between it and the inner wall of the water inlet. The circumferentially distributed filter grooves can provide an annular filtering surface. Compared with traditional basket filters, the filtering area is increased, the flow velocity per unit area is reduced. Moreover, due to the flushing of water, impurities can gather at the end of the inner cavity of the filter cartridge, reducing the risk of blockage and also preventing impurities from entering the pump housing indirectly and causing vibration. And after the liquid enters the filter barrel axially, it flows out radially through the circumferential holes, which helps to evenly distribute the flow velocity, reduce the turbulence and pressure pulsation at the impeller inlet, and indirectly suppress vibration.

[0022] 2. The anti-vibration and anti-impact chemical pump, through the self-cleaning component cooperating with the driving component and the reset component, uses the centrifugal force linked to the rotation of the impeller to drive the displacement of the filter cylinder, causing the cleaning ring to have a relative displacement with the inner wall of the filter cylinder. Finally, when the machine stops, the reset component makes the filter cylinder reset, so that the impurities on the inner wall of the filter cylinder can be comprehensively cleaned, avoiding blockage and affecting subsequent use. Cooperating with the centralized component, the accumulated impurity particles can be concentrated and discharged after the machine stops, and the impurity discharge is more thorough, reducing the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0024] Figure 1 Schematically shows the structural diagram of the present invention in the overall installation state;

[0025] Figure 2 Schematically shows the present invention Figure 1 The structural diagram from another perspective on the basis;

[0026] Figure 3 Schematically shows the structural diagram of the present invention in the disassembled state;

[0027] Figure 4 Schematically shows the structural diagram of the water inlet, impeller and pump housing of the present invention in the disassembled state;

[0028] Figure 5 Schematically shows the internal structure of the water inlet of the present invention;

[0029] Figure 6 Schematically shows the present invention Figure 5 The structural diagram in the disassembled state on the basis;

[0030] Figure 7 Schematically shows the structural diagram of the floating arm, swing rod and filter cylinder of the present invention in the disassembled state;

[0031] Figure 8 Schematically shows the structural diagram of the slider and floating arm of the present invention in the disassembled state;

[0032] Figure 9 Schematically shows the overall structural diagram of the first convex ring and the cleaning ring of the present invention;

[0033] Figure 10 Schematically shows the sectional structural diagram of the filter cylinder and the cleaning ring of the present invention in the cooperating state;

[0034] Figure 11Schematically shows a schematic structural diagram of the present invention highlighting the second through groove;

[0035] Figure 12 Schematically shows a schematic cross-sectional structural diagram of the lower end of the water inlet of the present invention;

[0036] Figure 13 Schematically shows a schematic structural diagram of the centrifugal disk of the present invention in a disassembled state.

[0037] Reference numerals in the figure: 1, pump housing; 2, water inlet; 3, water outlet; 4, traction plate; 5, protective frame; 6, shock-absorbing rubber pad; 7, base; 8, guide groove; 9, impeller; 10, collection box; 11, centrifugal disk; 12, slag discharge port; 13, traction shaft; 14, first convex ring; 15, filter cartridge; 16, backing plate; 17, second convex ring; 18, first guide pin; 19, filter groove; 20, first spring; 21, cleaning ring; 22, first through groove; 23, protective cover; 24, brush head; 25, gear; 26, telescopic cover; 27, swing rod; 28, floating arm; 29, rack; 30, opening; 31, connecting rod; 32, cleaning block; 33, guide shaft; 34, second through groove; 35, drive plate; 36, second guide pin; 37, second spring; 38, roller; 39, sliding arm; 40, guide wheel; 41, chute; 42, slider; 43, third spring; 44, guide post. Detailed implementation manners

[0038] It is easy to understand that according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can propose various interchangeable structural forms and implementation manners. Therefore, the following detailed implementation manners and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0039] According to an embodiment of the present invention in combination with Figures 1 - 13 shown.

[0040] As Figures 1 - 4 shown, a vibration-proof and impact-resistant chemical pump includes a pump housing 1, a water inlet 2 provided at one end of the pump housing 1, a water outlet 3 provided at the upper end of the pump housing 1, and an impeller 9 provided inside one end of the pump housing 1. A base 7 is provided at the bottom of the pump housing 1. The base 7 is fixed to the concrete foundation by bolts, and a shock-absorbing rubber pad 6 for earthquake resistance is provided between the base 7 and the concrete foundation, which can isolate the vibration from being transmitted to the external structure. A protective frame 5 is provided outside the pump housing 1. A heat dissipation grille is provided on the protective frame 5, and the pump housing 1 is separately fixed to the concrete foundation, which can provide anti-impact protection for the pump housing 1, increase the safety during use, and avoid accidental bumps from foreign objects.

[0041] As Figures 4 - 6 、Figures 9 - 10 、 Figure 13As shown, a filtering component is arranged inside the water inlet 2. The filtering component includes a filtering cylinder 15 movably arranged inside the water inlet 2. One side of the filtering cylinder 15 away from the impeller 9 is open, and a gap is formed between the outer part of the filtering cylinder 15 and the inner wall of the water inlet 2. Filtering grooves 19 are uniformly arranged on the circumferential side wall of the filtering cylinder 15. In order to conveniently clean and concentrate the impurity particles inside the filtering cylinder 15, a cleaning ring 21 is arranged inside the filtering cylinder 15. The outer wall of the cleaning ring 21 is slidably matched with the filtering cylinder 15, and the cleaning ring 21 is integrally connected with the first convex ring 14. Specifically, connecting rods 31 are uniformly arranged around the side wall of the first convex ring 14. One end of the connecting rod 31 away from the first convex ring 14 is fixedly connected with the side wall of the cleaning ring 21. A first through groove 22 is arranged at the bottom of one end of the filtering cylinder 15 close to the impeller 9. A slag discharge port 12 corresponding to the first through groove 22 is arranged at one end of the bottom of the water inlet 2. A collecting box 10 is detachably arranged at the lower end of the slag discharge port 12, preferably by threaded connection. A backing plate 16 is arranged at the bottom of the inner cavity of the water inlet 2. The thickness of the backing plate 16 is adapted to the thickness of the gap between the filtering cylinder 15 and the inner wall of the water inlet 2. The backing plate 16 can not only increase the stability of the filtering cylinder 15, but also fill the gap between the bottom of the filtering cylinder 15 and the inner wall of the water inlet 2 to prevent impurity particles from entering the pump housing 1. A second through groove 34 communicated with the slag discharge port 12 is arranged on the backing plate 16. In the initial state, the second through groove 34 coincides with the first through groove 22. The filtering groove 19 is a rectangular strip-shaped structure, and the filtering groove 19 is parallel to the axis of the filtering cylinder 15. Cleaning blocks 32 corresponding to the filtering grooves 19 one by one are uniformly arranged on the circumferential outer wall of the cleaning ring 21. The cleaning blocks 32 are slidably matched with the filtering grooves 19. One end of the cleaning block 32 close to the impeller 9 is a slope, and the slope faces the inner direction of the filtering cylinder 15, which is convenient for pushing out the impurity particles stuck in the filtering grooves 19. A guiding shaft 33 corresponding to the slope on the cleaning block 32 is arranged inside one end of the filtering groove 19 close to the impeller 9, which is convenient for extruding the last impurity particles when reaching the end. A driving component for driving the displacement of the filtering cylinder 15 is arranged at one end of the inner side of the pump housing 1 close to the water inlet 2. As a preferred embodiment, the driving component includes a centrifugal disk 11 arranged on the side of the impeller 9 close to the filtering cylinder 15. The centrifugal disk 11 is a hollow structure. A traction shaft 13 is movably connected along the axial direction of the centrifugal disk 11 inside one end of the centrifugal disk 11 close to the filtering cylinder 15. One end of the traction shaft 13 away from the centrifugal disk 11 is rotatably connected with the filtering cylinder 15. Sliding arms 39 are uniformly movably connected along the radial direction of the circumferential side wall of the centrifugal disk 11. Traction plates 4 are uniformly arranged on one end of the traction shaft 13 located inside the centrifugal disk 11. An inclined guide groove 8 is arranged on the side wall of the traction plate 4. A guide wheel 40 which is movably and guidingly matched with the guide groove 8 is arranged at one end of the sliding arm 39 located inside the centrifugal disk 11. In order to facilitate the reset of structures such as the filtering cylinder 15 after the centrifugal force disappears, a first convex ring 14 is arranged on the inner wall of the water inlet 2 at the end away from the impeller 9. A second convex ring 17 corresponding to the first convex ring 14 is arranged on the outer wall of one end of the filtering cylinder 15.A first guide pin 18 is movably and penetratingly arranged on the first convex ring 14. One end of the first guide pin 18 is fixedly connected to the side wall of the second convex ring 17, and a first spring 20 is sleeved outside the other end. The sides of the first convex ring 14 and the cleaning ring 21 away from the impeller 9 are both conical surfaces, and the conical surface on one side of the first convex ring 14 is in smooth transition with the inner wall of the water inlet 2, and the conical surface on one side of the cleaning ring 21 is in smooth transition with the inner wall of the filter cylinder 15. The conical surface can reduce the resistance to water flow.,

[0042] Such as Figures 7 - 8 , Figures 10 - 12As shown in the figure, in order to completely discharge the concentrated impurity particles, a floating arm 28 is vertically movably arranged at one end of the inner side of the filter cartridge 15 close to the impeller 9. Specifically, a slider 42 corresponding to the floating arm 28 is fixedly arranged at one end of the inner side of the collection box 10 close to the impeller 9. A chute 41 is arranged on one side of the floating arm 28. The floating arm 28 is movably sleeved outside the slider 42 through a traction plate 4. A guide post 44 is vertically arranged inside the chute 41. The slider 42 is movably sleeved outside the guide post 44. The floating arm 28 corresponds to the first through groove 22. Rack teeth 29 are symmetrically arranged on both sides of the upper end of the floating arm 28. A pair of gears 25 that are located on both sides of the floating arm 28 and mesh with the rack teeth 29 are rotatably arranged at one end of the inner side of the collection box 10 close to the impeller 9. A swing rod 27 is arranged at the lower end of the gear 25. A brush head 24 corresponding to the inner wall of the filter cartridge 15 is arranged at the bottom of the swing rod 27. In order to facilitate the reset of the floating arm 28, a third spring 43 located at the bottom of the slider 42 is sleeved outside the lower end of the guide post 44. In order to reduce the erosion of water flow, a protective cover 23 for protecting the gears 25 and rack teeth 29 is arranged at one end of the inner side of the filter cartridge 15 close to the impeller 9. The lower end of the floating arm 28 penetrates through the lower end of the protective cover 23 and extends downward, and the floating arm 28 is movably connected to the protective cover 23. Openings 30 corresponding to the swing rod 27 are arranged on both sides of the lower end of the protective cover 23. The swing rod 27 extends outward through the openings 30. Telescopic covers 26 are arranged at both ends inside the openings 30. One end of the telescopic cover 26 is fixed on the side wall of the swing rod 27. Thus, when the swing rod 27 swings, the telescopic cover 26 expands and contracts for protection. A jacking assembly for driving the floating arm 28 to rise is arranged in the slag discharge port 12. The jacking assembly includes a driving plate 35 that is vertically movably arranged inside the slag discharge port 12 and corresponds to the floating arm 28. The side of the upper end of the driving plate 35 facing away from the impeller 9 is an inclined surface, which is convenient for the filter cartridge 15 to move downward when being squeezed by the inner wall of the first through groove 22 during displacement. In order to reduce the friction between the bottom of the filter cartridge 15 and the upper end of the driving plate 35, a roller 38 is rotatably arranged at the upper end of the driving plate 35, and the top of the roller 38 protrudes above the top end of the driving plate 35. The upper end of the driving plate 35 can extend upward through the second through groove 34. A second guide pin 36 is arranged inside the slag discharge port 12. The lower end of the driving plate 35 is movably sleeved outside the second guide pin 36. A second spring 37 located at the bottom of the driving plate 35 is sleeved outside the lower end of the second guide pin 36. And in the initial state of the second spring 37, the upper end of the driving plate 35 protrudes above the top of the backing plate 16.

[0043] When in use, initially, the first through groove 22 coincides with the second through groove 34, the upper end of the driving plate 35 is in a state of conflict with the bottom of the floating arm 28, the third spring 43 is in a contracted state, the cleaning ring 21 is located in the end area of the inner cavity of the filter cartridge 15, and the impeller 9 is driven to rotate to generate centrifugal force when the centrifugal pump is running. The liquid enters through the water inlet 2, is filtered through the filter groove 19 on the filter cartridge 15, and is then discharged through the water outlet 3. When the impeller 9 rotates, it drives the centrifugal disc 11 to rotate synchronously, and the sliding arm 39 is moved outward by the centrifugal force. The guide wheel 40 can drive the traction plate 4, the traction shaft 13, and the filter cartridge 15 to move toward the direction close to the impeller 9 through the inclined guide groove 8. The first through groove 22 and the second through groove 34 are gradually staggered. The upper inclined surface of the driving plate 35 is squeezed by the inner wall of the first through groove 22, which causes the driving plate 35 to move downward and separate from the bottom of the floating arm 28, and then the third spring 43 is reset, the floating arm 28 moves downward, and the rack 29 drives the two rocker bars 27 to swing to both sides and open through the gear 25. Then, when the filter cartridge 15 is displaced, the roller 38 at the upper end of the driving plate 35 rolls with the bottom wall of the filter cartridge 15, and the second spring 37 is in a contracted state. At the same time, the displacement of the filter cartridge 15 drives the first guide pin 18 to move through the second convex ring 17, and cooperates with the first convex ring 14 to realize the contraction of the first spring 20. The bottom of the filter cartridge 15 blocks the second through groove 34, and the circumferentially distributed filter grooves 19 can provide an annular filtering surface. Compared with the traditional basket filter The filter increases the filtration area and reduces the flow rate per unit area. Due to the flushing of water, impurities can be gathered at the end of the inner cavity of the filter cartridge 15, reducing the risk of clogging and preventing impurities from entering the pump housing 1 and indirectly causing vibration. Moreover, after the liquid enters the filter barrel from the axial direction, it flows out radially through the circumferential holes, which helps to evenly distribute the flow rate, reduce turbulence and pressure pulsation at the impeller inlet, and indirectly suppress vibration. After use, the impeller 9 gradually stops, the centrifugal disc 11 gradually stops synchronously, the centrifugal force disappears, the first spring 20 gradually resets, the filter cartridge 15 is driven to reset, the cleaning ring 21 and the inner wall of the filter cartridge 15 are relatively displaced, and the cleaning block 32 gradually pushes out the impurity particles stuck in the filter slot 19, and the cleaning ring 21 pushes the impurity particles The particles are pushed to the end of the inner cavity of the filter cartridge 15. When reaching the end, the end inclined surface of the cleaning block 32 cooperates with the arc surface of the guide shaft 33 to completely squeeze out the impurity particles, and then the first through groove 22 coincides with the second through groove 34, the driving plate 35 coincides with the first through groove 22, the second spring 37 is reset, and the driving plate 35 pops up. The upper end of the driving plate 35 pushes the floating arm 28, and the floating arm 28 drives the rack 29 to rise, and the rack 29 drives the gear 25 to rotate, and the gear 25 drives the swing rod 27 to swing, and the swing rod 27 drives the brush head 24 to sweep the impurity particles at the end of the inner cavity of the filter cartridge 15 to the first through groove 22 in the middle, and then the impurity particles are concentrated through the first through groove 22 and the second through groove 34 into the collection box 10 for collection.

[0044] The technical scope of the present invention is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A vibration-proof and shock-resistant chemical pump, characterized in that: It includes a pump casing, a water inlet arranged at one end of the pump casing, a water outlet arranged at the upper end of the pump casing, and an impeller arranged inside one end of the pump casing. A filtering component is arranged inside the water inlet. The filtering component includes a filtering cylinder movably arranged inside the water inlet. One side of the filtering cylinder away from the impeller is open, and a gap is formed between the outer part of the filtering cylinder and the inner wall of the water inlet. Filtering grooves are evenly arranged on the circumferential side wall of the filtering cylinder. It further includes a self-cleaning component. The self-cleaning component includes a cleaning ring arranged inside the filtering cylinder. The outer wall of the cleaning ring is in sliding fit with the filtering cylinder, and the cleaning ring is integrally connected with a first convex ring. A first through groove is arranged at the bottom of one end of the filtering cylinder close to the impeller. A slag discharge port corresponding to the first through groove is arranged at one end of the bottom of the water inlet. A backing plate is arranged at the inner cavity bottom of the water inlet. The thickness of the backing plate is adapted to the thickness of the gap between the filtering cylinder and the inner wall of the water inlet. A second through groove communicated with the slag discharge port is arranged on the backing plate. In the initial state, the second through groove coincides with the first through groove. The filtering groove is a rectangular strip-shaped structure and is parallel to the axis of the filtering cylinder. Cleaning blocks corresponding to the filtering grooves one by one are evenly arranged on the circumferential outer wall of the cleaning ring. The cleaning blocks are in sliding fit with the filtering grooves. One end of the cleaning block close to the impeller is a slope, and the slope faces the inner direction of the filtering cylinder. A driving component for driving the displacement of the filtering cylinder is arranged at one end of the inner side of the pump casing close to the water inlet, and the driving component is coaxially linked with the impeller.

2. The anti-vibration and anti-impact chemical pump according to claim 1, characterized in that: The driving component includes a centrifugal disc arranged on the side of the impeller close to the filtering cylinder. The centrifugal disc is a hollow structure. A traction shaft is movably connected along the axial direction of the centrifugal disc inside one end of the centrifugal disc close to the filtering cylinder, and the end of the traction shaft away from the centrifugal disc is rotatably connected with the filtering cylinder. Sliding arms are evenly movably connected along the radial direction of the circumferential side wall of the centrifugal disc. Traction plates are evenly arranged on the end of the traction shaft located inside the centrifugal disc. An inclined guide groove is arranged on the side wall of the traction plate. A guide wheel in movable guiding fit with the guide groove is arranged at the end of the sliding arm located inside the centrifugal disc.

3. The anti-vibration and anti-shock chemical pump according to claim 2, characterized in that: A reset component is arranged at the end of the filtering cylinder away from the impeller. The reset component includes a first convex ring arranged on the inner wall of the water inlet away from the impeller end. A second convex ring corresponding to the first convex ring is arranged on the outer wall of one end of the filtering cylinder. A first guide pin is movably penetrated through the first convex ring. One end of the first guide pin is fixedly connected with the side wall of the second convex ring, and a first spring is sleeved on the other end outside.

4. The anti-vibration and shock-resistant chemical pump according to claim 1, characterized in that: The sides of the first convex ring and the cleaning ring away from the impeller are both conical surfaces, and the conical surface on one side of the first convex ring is smoothly transitioned with the inner wall of the water inlet, and the conical surface on one side of the cleaning ring is smoothly transitioned with the inner wall of the filtering cylinder.

5. The anti-vibration and impact-resistant chemical pump according to claim 4, characterized in that: A guiding shaft corresponding to the slope on the cleaning block is arranged inside one end of the filtering groove close to the impeller.

6. The anti-vibration and anti-impact chemical pump according to claim 1, characterized in that: One end of the filter cartridge is provided with a concentration component. The concentration component includes a floating arm vertically and movably arranged inside the filter cartridge near one end of the impeller. The floating arm corresponds to the first through groove. Rack teeth are symmetrically arranged on both sides of the upper end of the floating arm. A pair of gears located on both sides of the floating arm and meshing with the rack teeth are rotatably arranged inside the collection box near one end of the impeller. A swing rod is arranged at the lower end of the gear. A brush head corresponding to the inner wall of the filter cartridge is arranged at the bottom of the swing rod. A jacking component for driving the floating arm to rise is arranged in the slag discharge port. The jacking component includes a driving plate vertically and movably arranged inside the slag discharge port and corresponding to the floating arm. The side of the upper end of the driving plate facing away from the impeller is an inclined surface. The upper end of the driving plate can extend upward through the second through groove. A second guide pin is arranged inside the slag discharge port. The lower end of the driving plate is movably sleeved outside the second guide pin, and a second spring located at the bottom of the driving plate is sleeved outside the lower end of the second guide pin.

7. The anti-vibration and impact-resistant chemical pump according to claim 6, wherein: A roller is rotatably arranged at the upper end of the driving plate, and the top of the roller protrudes from the top end of the driving plate.

8. The anti-vibration and anti-impact chemical pump according to claim 6, characterized in that: A slider corresponding to the floating arm is fixedly arranged inside the collection box near one end of the impeller. A chute is arranged on one side of the floating arm. The floating arm is movably sleeved outside the slider through a traction plate. A guide post is vertically arranged inside the chute. The slider is movably sleeved outside the guide post. A third spring located at the bottom of the slider is sleeved outside the lower end of the guide post.

9. The anti-vibration and anti-impact chemical pump according to claim 1, wherein: The collection box is detachably arranged at the lower end of the slag discharge port.

10. A vibration-proof and shock-resistant chemical pump according to any one of claims 1-9, characterized in that: A protective frame is arranged outside the pump housing.

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