A self-priming vortex pump

Abstract

The present invention relates to the technical field of pump equipment, specifically a self-priming vortex pump, including a pump body, one end of the pump body is fixedly connected to a shell, an end of the shell away from the pump body is provided with an inlet, an end of the shell near the inlet is provided with a filtering mechanism, one side of the filtering mechanism is provided with a crushing mechanism, the crushing mechanism is fixedly connected to the end of the shell away from the inlet, the filtering mechanism includes a filter plate, the filter plate is rotatably connected in the shell, and an end of the filter plate near the inlet is provided with a dredging mechanism. The present invention sets a slowly rotating and deflectable filter plate at the muddy water inlet position, so that large particles of mud blocks in the muddy water are filtered, and the pump body is protected from damage. In the process of continuous rotation, mud blocks stuck in the holes of the filter plate will fall off. When the holes on the filter plate are seriously blocked by mud blocks, the filter plate will deflect a certain angle with the center rod as the axis, so that the muddy water passes directly through the gap between the filter plate and the shell, and the water intake is reduced when the filter plate is partially blocked and cannot be dredged.

Description

Technical Field

[0001] The invention relates to the technical field of pump equipment, in particular to a self-priming vortex pump. Background Art

[0002] A self-priming vortex pump, also known as a vortex self-priming pump or a vortex self-priming pump, is a centrifugal pump with a self-priming function. The working principle of a self-priming vortex pump mainly depends on the design of its internal impeller and the vortex and centrifugal force generated by the rotation. When the pump starts running, the impeller rotates continuously, generating a high-speed rotating vortex. Under the action of the vortex, the liquid is sucked in from the pump inlet and enters the pump through the impeller. Due to the action of centrifugal force, the liquid will be quickly pushed to the pump outlet.

[0003] Self-priming vortex pumps are often used to pump liquids with particles, but the particle size must meet the design requirements, otherwise it may affect the performance and life of the pump. In daily life, the particle size in the pumped liquid is not controllable. For example, when pumping muddy water, the size of the mud blocks in the muddy water is not consistent. After the traditional self-priming vortex pump sucks it in, the large mud blocks move in the pump body, which can easily cause damage to the pump body.

[0004] In view of this, the present invention proposes a self-priming vortex pump to solve the above technical problems. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] A self-priming vortex pump comprises a pump body, one end of the pump body is fixedly connected to a shell, an end of the shell away from the pump body is provided with an inlet, an end of the shell near the inlet is provided with a filter mechanism, one side of the filter mechanism is provided with a crushing mechanism, the crushing mechanism is fixedly connected to the end of the shell away from the inlet, the filter mechanism comprises a filter plate, the filter plate is rotatably connected to the shell, and an end of the filter plate near the inlet is provided with a dredging mechanism;

[0007] Among them, the filtering mechanism also includes a center rod, which passes through both sides of the filter plate. The center rod and the filter plate are rotatably connected. Slide blocks are fixedly connected to both ends of the center rod. A slide groove is opened on the inner wall of the shell. A slide block is slidably connected in the slide groove. The slide block is an arc plate structure. A torsion spring is provided in the middle of the center rod. The torsion spring is used to reset the filter plate after deflection.

[0008] As a preferred solution of the self-priming vortex pump provided by the present invention, the pump body is provided with an outlet, and the outlet, the housing and the inlet are connected.

[0009] As a preferred solution of the self-priming vortex pump provided by the present invention, one end of the filter plate away from the inlet is fixedly connected to a spring telescopic rod, one end of the spring telescopic rod is fixedly connected to a turntable, the turntable and the output end of the reducer are fixedly connected, and the reducer is fixedly connected to the housing by a bracket.

[0010] As a preferred solution of the self-priming vortex pump provided by the present invention, a pair of spring telescopic rods are provided, and the pair of spring telescopic rods are symmetrically arranged about the axis of the central rod.

[0011] As a preferred solution of the self-priming vortex pump provided by the present invention, the crushing mechanism includes a grinding roller, which is arranged on a side of the reducer away from the filter plate, one end of the grinding roller is fixedly connected to the input end of the reducer, and a grinding groove is provided on the periphery of the grinding roller, and the grinding groove is fixedly connected to the inner wall of the shell.

[0012] As a preferred solution of the self-priming vortex pump provided by the present invention, a gap is provided between the grinding roller and the grinding groove, and the gap decreases from one end of the grinding roller close to the filter plate to one end of the grinding roller away from the filter plate.

[0013] As a preferred solution of the self-priming vortex pump provided by the present invention, the end of the grinding roller away from the filter plate is fixedly connected with a connecting pipe, a connecting column is slidably engaged in the connecting pipe, and the connecting pipe and the connecting column are fixed by screws after the distance between them is adjusted.

[0014] As a preferred solution of the self-priming vortex pump provided by the present invention, a turbine is fixedly connected to one end of the connecting column away from the grinding roller.

[0015] As a preferred solution of the self-priming vortex pump provided by the present invention, the dredging mechanism includes a receiving plate, one end of the receiving plate is fixedly connected to the inner wall of the shell, the other end of the receiving plate extends to the center of the filter plate, the receiving plate is close to the end of the filter plate away from the grinding roller, a cavity is provided in the receiving plate, a scraper is slidably connected in the cavity, the scraper is slidably connected in the receiving plate through a supporting spring, and the scraper and the surface of the filter plate are slidably fitted.

[0016] As a preferred solution of the self-priming vortex pump provided by the present invention, a cleaning bucket for throwing away the accumulated mud at the bottom of the shell is fixedly connected to the periphery of the filter plate close to the inlet.

[0017] Beneficial effects of the present invention:

[0018] In the present invention, by setting a filter plate at the muddy water inlet position, large particles of mud blocks in the muddy water are filtered and cannot enter the pump body, thereby protecting the pump body from damage. At the same time, the filter plate is set to rotate slowly, and the mud blocks stuck in the holes of the filter plate will fall off during the continuous rotation process, thereby improving the filtering speed. At the same time, the filter plate is set to be deflectable. When the holes on the filter plate are seriously blocked by mud blocks, the filter plate will deflect a certain angle with the center rod as the axis, so that the muddy water passes directly through the gap between the filter plate and the shell, thereby ensuring the amount of muddy water passing through, and preventing the water intake from being reduced when the filter plate is partially blocked and cannot be dredged. And the mud blocks in the muddy water that pass directly will be broken by the subsequent crushing mechanism, further protecting the pump body. At the same time, the scraper provided in the present invention always slides and fits the surface of the filter plate. When mud blocks are blocked in the holes of the filter plate, the scraper can scrape and cut off the mud blocks of the filter plate, thereby improving the passing efficiency of the muddy water. The cleaning bucket arranged on the filter plate can scoop up the mud blocks accumulated at the bottom of the filter plate when it rotates, and then the cleaning bucket continues to rotate with the filter plate. When the cleaning bucket reaches the upper wall of the shell, the mud blocks are sprinkled out of the cleaning bucket, so that the mud blocks pass through the filter plate along with the muddy water, preventing the mud blocks from accumulating at the bottom of the filter plate for a long time and causing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0020] in:

[0021] Figure 1 It is a schematic diagram of the overall structure of the self-priming vortex pump of the present invention;

[0022] Figure 2 It is a schematic diagram of the connection structure inside the casing of the self-priming vortex pump of the present invention;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 4 It is a schematic diagram of the connection structure of the crushing mechanism in the self-priming vortex pump of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure of the filtering mechanism in the self-priming vortex pump of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure of the filtering mechanism and the crushing mechanism in the self-priming vortex pump of the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at B in the middle;

[0028] Figure 8 For the present invention Figure 6 A magnified schematic diagram of the structure at C in the middle;

[0029] Fig. 9 It is a schematic diagram of the connection structure of the filtering mechanism and the dredging mechanism in the self-priming vortex pump of the present invention;

[0030] Fig.10 For the present invention Fig. 9 A magnified schematic diagram of the structure at D in the middle;

[0031] In the figure:

[0032] 1. Pump body; 2. Outlet; 3. Inlet; 4. Shell; 5. Filter mechanism; 51. Filter plate; 52. Center rod; 53. Torsion spring; 54. Slider; 55. Slide; 56. Spring telescopic rod; 57. Turntable; 58. Reducer; 6. Crushing mechanism; 61. Grinding roller; 62. Grinding groove; 63. Connecting pipe; 64. Connecting column; 65. Turbine; 66. Screw; 7. Dredging mechanism; 71. Receiving plate; 72. Cavity; 73. Support spring; 74. Scraper; 8. Cleaning bucket. DETAILED DESCRIPTION

[0033] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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] Example

[0035] like Figure 1-Figure 10 As shown, a self-priming vortex pump comprises a pump body 1, one end of the pump body 1 is fixedly connected to a shell 4, an end of the shell 4 away from the pump body 1 is provided with an inlet 3, an end of the shell 4 close to the inlet 3 is provided with a filtering mechanism 5, one side of the filtering mechanism 5 is provided with a crushing mechanism 6, the crushing mechanism 6 is fixedly connected to the end of the shell 4 away from the inlet 3, the filtering mechanism 5 comprises a filter plate 51, the filter plate 51 is rotatably connected to the shell 4, and an end of the filter plate 51 close to the inlet 3 is provided with a dredging mechanism 7.

[0036] Among them, the filtering mechanism 5 also includes a center rod 52, the center rod 52 passes through both sides of the filter plate 51, the center rod 52 and the filter plate 51 are rotatably connected, and sliders 54 are fixedly connected to both ends of the center rod 52. A slide groove 55 is opened on the inner wall of the shell 4, and the slide groove 55 is slidably connected with the slider 54. The slider 54 is an arc plate structure. A torsion spring 53 is provided in the middle of the center rod 52, and the torsion spring 53 is used to reset the filter plate 51 after deflection.

[0037] The pump body 1 is provided with an outlet 2, and the outlet 2, the housing 4 and the inlet 3 are connected.

[0038] One end of the filter plate 51 away from the inlet 3 is fixedly connected to a spring telescopic rod 56, one end of the spring telescopic rod 56 is fixedly connected to a turntable 57, the turntable 57 and the output end of the reducer 58 are fixedly connected, and the reducer 58 is fixedly connected to the housing 4 by a bracket.

[0039] A pair of spring telescopic rods 56 is provided, and the pair of spring telescopic rods 56 are symmetrically arranged about the axis of the central rod 52 .

[0040] In the embodiment, after the pump body 1 is working, muddy water is sucked in from the inlet 3, and then the muddy water passes through the shell 4 and is discharged from the outlet 2. When the muddy water passes through the turbine 65 in the shell 4, the turbine 65 will rotate under the high-speed impact of the water flow, and slowly drive the turntable 57 to rotate after passing through the connecting column 64, the connecting pipe 63, the grinding roller 61 and the reducer 58. When the turntable 57 rotates, it drives the spring telescopic rod 56 to rotate. The spring telescopic rod 56 drives the filter plate 51 to rotate slowly. The sliders 54 at both ends of the center rod 52 passing through the middle of the filter plate 51 slide in the slide groove 55. The filter plate 51 and the shell 4 have a preset gap so that the filter plate 51 can deflect with the center rod 52 as the axis. The filter plate 51 is used to filter larger soil blocks to prevent larger soil blocks from entering the pump body 1 and causing damage to the pump body 1. The filter plate 51 will cause the soil blocks stuck in the holes of the filter plate 51 to fall off during continuous rotation, thereby increasing the filtration speed.

[0041] It should be noted that when the holes on the filter plate 51 are seriously blocked by mud (the areas where the holes on the filter plate 51 are blocked by mud are random, and some mud blocks will continue to accumulate in a certain area of ​​the filter plate 51 to cause blockage), causing the areas on the filter plate 51 to be subjected to different suction forces of the pump body 1, the filter plate 51 will deflect a certain angle with the center rod 52 as the axis, and at the same time, the torsion spring 53 is stressed, so that the muddy water passes directly through the gap between the filter plate 51 and the housing 4 (the gap between the filter plate 51 and the housing 4 increases after the deflection), thereby ensuring the amount of muddy water passing through and preventing the filter plate 51 from being partially blocked and unable to be unblocked, resulting in a reduction in the amount of water inflow. When the blocked area of ​​the filter plate 51 is unblocked, the filter plate 51 is subjected to uniform suction forces of the pump body 1, and at this time, the torsion spring 53 is released to drive the filter plate 51 to reverse and reset.

[0042] like Figure 2 , Figure 4, Figure 5 and Figure 6 As shown, the crushing mechanism 6 includes a grinding roller 61, which is arranged on the side of the reducer 58 away from the filter plate 51, one end of the grinding roller 61 is fixedly connected to the input end of the reducer 58, and a grinding groove 62 is provided on the periphery of the grinding roller 61, and the grinding groove 62 is fixedly connected to the inner wall of the shell 4.

[0043] A gap is provided between the grinding roller 61 and the grinding groove 62 , and the gap decreases from an end of the grinding roller 61 close to the filter plate 51 to an end of the grinding roller 61 away from the filter plate 51 .

[0044] One end of the grinding roller 61 away from the filter plate 51 is fixedly connected to a connecting pipe 63 , a connecting column 64 is slidably engaged in the connecting pipe 63 , and the connecting pipe 63 and the connecting column 64 are fixed by screws 66 after the distance between them is adjusted.

[0045] One end of the connecting column 64 away from the grinding roller 61 is fixedly connected to a turbine 65 .

[0046] In the embodiment, muddy water enters into the gap between the grinding roller 61 and the grinding groove 62 after being filtered by the filter plate 51. Since the grinding roller 61 is continuously rotating, the mud blocks can be squeezed and crushed between the grinding roller 61 and the grinding groove 62, preventing large mud blocks from damaging the pump body 1.

[0047] As mentioned above, after the filter plate 51 is blocked and deflected, the muddy water directly enters between the grinding roller 61 and the grinding groove 62. The muddy water here is not filtered by the filter plate 51, and contains a lot of mud blocks. It should be noted that there is a gap between the grinding roller 61 and the grinding groove 62, and the gap decreases from the end of the grinding roller 61 close to the filter plate 51 to the end of the grinding roller 61 away from the filter plate 51. This design allows larger mud blocks to smoothly enter the gap between the grinding roller 61 and the grinding groove 62 and be crushed. At the same time, under the impact of the water flow, the larger mud blocks fit the gap between the grinding roller 61 and the grinding groove 62, so that they are crushed faster and the crushing efficiency is improved. The gap is gradually reduced, so that the mud blocks are crushed step by step, further improving the crushing efficiency.

[0048] It should be noted that the connection position of the connecting pipe 63 and the connecting column 64 can be adjusted by the screw 66, and the relative position between the grinding roller 61 and the grinding groove 62 can be adjusted, thereby adjusting the gap size between the grinding roller 61 and the grinding groove 62 (the gap between the grinding roller 61 and the grinding groove 62 close to the end of the turbine 65 is the minimum gap through which mud blocks can pass, and by controlling the size of the gap, the size of the mud block particles entering the pump body 1 can be controlled) to cope with different working environments.

[0049] like Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, the dredging mechanism 7 includes a receiving plate 71, one end of which is fixedly connected to the inner wall of the shell 4, and the other end of the receiving plate 71 extends to the center of the filter plate 51. The receiving plate 71 is close to the end of the filter plate 51 away from the grinding roller 61. A cavity 72 is provided in the receiving plate 71, and a scraper 74 is slidably connected in the cavity 72. The scraper 74 is slidably connected in the receiving plate 71 through a support spring 73, and the scraper 74 and the surface of the filter plate 51 are slidably fitted.

[0050] A cleaning bucket 8 for throwing away the soil accumulated at the bottom of the shell 4 is fixedly connected to the periphery of the filter plate 51 close to the inlet 3 .

[0051] In the embodiment, the scraper 74 always slides and fits the surface of the filter plate 51. When the holes of the filter plate 51 are clogged with mud blocks, the scraper 74 can scrape and cut off the mud blocks of the filter plate 51, thereby improving the passing efficiency of mud and water. At the same time, the scraper 74 is retracted in the receiving plate 71 through the support spring 73, so that the scraper 74 can always fit on the filter plate 51.

[0052] It should be noted that when the filter plate 51 rotates, the cleaning bucket 8 will be driven to rotate. When the cleaning bucket 8 rotates, the dirt blocks accumulated at the bottom of the filter plate 51 can be shoveled up (since the gravity of the dirt blocks is greater than that of water, they are easily accumulated at the bottom of the filter plate 51, that is, the lower wall of the shell 4). Then the cleaning bucket 8 continues to rotate with the filter plate 51. When the cleaning bucket 8 reaches the upper wall of the shell 4, the dirt blocks are spilled from the cleaning bucket 8, so that the dirt blocks follow the muddy water through the filter plate 51, preventing them from accumulating at the bottom of the filter plate 51 for a long time and causing blockage.

[0053] The workflow is as follows:

[0054] After the pump body 1 works, muddy water is sucked in from the inlet 3, and then the muddy water passes through the shell 4 and is discharged from the outlet 2. When the muddy water passes through the turbine 65 in the shell 4, the turbine 65 will rotate under the high-speed impact of the water flow, and slowly drive the turntable 57 to rotate after passing through the connecting column 64, the connecting pipe 63, the grinding roller 61 and the reducer 58. When the turntable 57 rotates, it drives the spring telescopic rod 56 to rotate, and the spring telescopic rod 56 drives the filter plate 51 to rotate slowly. The sliders 54 at both ends of the center rod 52 passing through the middle of the filter plate 51 slide in the slide groove 55. The filter plate 51 and the shell 4 have a preset gap so that the filter plate 51 can deflect with the center rod 52 as the axis. The filter plate 51 is used to filter larger soil blocks to prevent larger soil blocks from entering the pump body 1 and causing damage to the pump body 1. The filter plate 51 will cause the soil blocks stuck in the holes of the filter plate 51 to fall off during the continuous rotation of the filter plate 51, thereby increasing the filtration speed. When the holes on the filter plate 51 are seriously clogged with mud, causing different areas on the filter plate 51 to be subjected to different suction forces from the pump body 1, the filter plate 51 will deflect by a certain angle with the center rod 52 as the axis, and at the same time, the torsion spring 53 is stressed, so that the muddy water passes directly through the gap between the filter plate 51 and the housing 4, thereby ensuring the amount of muddy water passing through and preventing the filter plate 51 from being partially blocked and unable to be cleared, thereby reducing the amount of water inlet. After the filter plate 51 is blocked and deflected, the muddy water directly enters between the grinding roller 61 and the grinding groove 62. The muddy water here is not filtered by the filter plate 51, and contains more mud blocks. It should be noted that there is a gap between the grinding roller 61 and the grinding groove 62, and the gap decreases from the end of the grinding roller 61 close to the filter plate 51 to the end of the grinding roller 61 away from the filter plate 51. This design can make larger mud blocks smoothly enter the gap between the grinding roller 61 and the grinding groove 62 and be crushed. At the same time, under the impact of the water flow, the larger mud blocks fit the gap between the grinding roller 61 and the grinding groove 62, so that they are crushed faster and the crushing efficiency is improved. And the gap is gradually reduced, so that the mud blocks are crushed step by step, further improving the crushing efficiency. At the same time, the connection position of the connecting pipe 63 and the connecting column 64 can be adjusted by screws 66, and the relative position between the grinding roller 61 and the grinding groove 62 can be adjusted, so as to adjust the gap size between the grinding roller 61 and the grinding groove 62 to cope with different working environments. When the blocked area of ​​the filter plate 51 is cleared, the filter plate 51 is evenly sucked by the pump body 1, and the torsion spring 53 is released to drive the filter plate 51 to reverse and reset. In the above process, the scraper 74 always slides and fits the surface of the filter plate 51. When mud blocks are blocked in the holes of the filter plate 51, the scraper 74 can scrape and cut off the mud blocks of the filter plate 51, thereby improving the passing efficiency of muddy water. At the same time, the scraper 74 is retracted in the receiving plate 71 through the support spring 73, so that the scraper 74 can always fit on the filter plate 51.At the same time, the filter plate 51 will drive the cleaning bucket 8 to rotate when it rotates. The cleaning bucket 8 can shovel up the mud blocks accumulated at the bottom of the filter plate 51 when it rotates. Then the cleaning bucket 8 continues to rotate with the filter plate 51. When the cleaning bucket 8 reaches the upper wall of the shell 4, the mud blocks are spilled out of the cleaning bucket 8, so that the mud blocks follow the muddy water through the filter plate 51, preventing the mud blocks from accumulating at the bottom of the filter plate 51 for a long time and causing blockage.

[0055] 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.

[0056] The above shows and describes 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 above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A self-priming vortex pump, comprising a pump body (1), one end of the pump body (1) being fixedly connected to a housing (4), and an end of the housing (4) away from the pump body (1) being provided with an inlet (3), characterized in that: A filtering mechanism (5) is provided at one end of the housing (4) close to the inlet (3); a crushing mechanism (6) is provided on one side of the filtering mechanism (5); the crushing mechanism (6) is fixedly connected to the end of the housing (4) away from the inlet (3); the filtering mechanism (5) comprises a filter plate (51); the filter plate (51) is rotatably connected to the housing (4); and a dredging mechanism (7) is provided at one end of the filter plate (51) close to the inlet (3); The filtering mechanism (5) further comprises a central rod (52), the central rod (52) passing through both sides of the filter plate (51), the central rod (52) and the filter plate (51) being rotatably connected, sliders (54) being fixedly connected to both ends of the central rod (52), a slide groove (55) being provided on the inner wall of the housing (4), the slide groove (55) being slidably connected to the slider (54), the slider (54) being of an arc plate structure, a torsion spring (53) being provided in the middle of the central rod (52), the torsion spring (53) being used for resetting the filter plate (51) after deflection; A cleaning bucket (8) for throwing away soil accumulated at the bottom of the housing (4) is fixedly connected to the periphery of the filter plate (51) near the inlet (3).

2. The self-priming vortex pump as claimed in claim 1, characterized in that: The pump body (1) is provided with an outlet (2), and the outlet (2), the housing (4) and the inlet (3) are connected.

3. The self-priming vortex pump as claimed in claim 2, characterized in that: A spring telescopic rod (56) is fixedly connected to one end of the filter plate (51) away from the inlet (3); one end of the spring telescopic rod (56) is fixedly connected to a rotating disk (57); the rotating disk (57) and an output end of a reducer (58) are fixedly connected; and the reducer (58) is fixedly connected to the housing (4) via a bracket.

4. The self-priming vortex pump as claimed in claim 3, characterized in that: A pair of spring telescopic rods (56) are provided, and the pair of spring telescopic rods (56) are symmetrically arranged about the axis of the central rod (52).

5. The self-priming vortex pump as claimed in claim 4, characterized in that: The crushing mechanism (6) comprises a grinding roller (61), which is arranged on a side of the reducer (58) away from the filter plate (51), one end of the grinding roller (61) is fixedly connected to an input end of the reducer (58), a grinding groove (62) is provided on the periphery of the grinding roller (61), and the grinding groove (62) is fixedly connected to the inner wall of the housing (4).

6. The self-priming vortex pump as claimed in claim 5, characterized in that: A gap is provided between the grinding roller (61) and the grinding groove (62), and the gap decreases from an end of the grinding roller (61) close to the filter plate (51) to an end of the grinding roller (61) far from the filter plate (51).

7. The self-priming vortex pump as claimed in claim 6, characterized in that: One end of the grinding roller (61) away from the filter plate (51) is fixedly connected to a connecting pipe (63), a connecting column (64) is slidably engaged in the connecting pipe (63), and the connecting pipe (63) and the connecting column (64) are fixed by screws (66) after the spacing between them is adjusted.

8. The self-priming vortex pump as claimed in claim 7, characterized in that: One end of the connecting column (64) away from the grinding roller (61) is fixedly connected to a turbine (65).

9. The self-priming vortex pump as claimed in claim 8, characterized in that: The dredging mechanism (7) comprises a receiving plate (71), one end of which is fixedly connected to the inner wall of the housing (4), the other end of which extends to the center of the filter plate (51), the receiving plate (71) being close to one end of the filter plate (51) away from the grinding roller (61), a cavity (72) being provided in the receiving plate (71), a scraper (74) being slidably connected in the cavity (72), the scraper (74) being slidably connected in the receiving plate (71) via a supporting spring (73), and the scraper (74) and the filter plate (51) are slidably fitted on the surface.

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