Self-filtering magnetic pump

Abstract

The application relates to the field of magnetic force pumps, and particularly discloses a self-filtering magnetic force pump which comprises a motor and a pump body, the pump body is fixed to the end of the motor, the impeller in the pump body is fixed to the rotating shaft of the motor, the other end of the pump body is fixed with a filtering device, the filtering device is communicated with the water inlet of the pump body, the filtering device comprises a pipe body and a plurality of filter screens arranged in the pipe body, the cross section of the fluid in the pipe body is consistent with the filter screen when the fluid passes through the filter screen. The plurality of filter screens filter the impurities in the fluid, ensure that the fluid entering the pump body is kept pure, avoid the impurities in the fluid from entering the pump body and being stuck in the gap between the inner magnetic rotor and the isolation sleeve, ensure that the rotation of the inner magnetic rotor is not affected, the filter screen is obliquely arranged, the contact area between the filter screen and the fluid is increased, the filtering effect of the filter screen is improved, the filter screen can slide out of the pipe body along the guide groove with the clamping plate, the filter screen can be cleaned, and the filtering effect of the filter screen is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of magnetic force pump, in particular to a self-filtering magnetic force pump. BACKGROUND

[0002] The magnetic force pump belongs to a branch of the water pump field, and is a new product applying the working principle of permanent magnet coupling to the centrifugal pump. The magnetic force pump mainly comprises a motor driving an outer driving magnet to rotate. The outer driving magnet and an inner magnetic rotor are magnetically attracted to each other, so that the inner magnetic rotor rotates, and a impeller connected to the inner magnetic rotor rotates as well. The inner magnetic rotor and the outer driving magnet are separated by a spacer to ensure the sealing of the pump body of the magnetic force pump. In order to ensure the magnetic force between the inner magnetic rotor and the outer driving magnet, the gap between the inner magnetic rotor and the spacer needs to be small enough. However, when the magnetic force pump pumps fluid containing impurities, the impurities in the fluid are easily stuck in the gap between the inner magnetic rotor and the spacer, thereby affecting the normal rotation of the inner magnetic rotor. SUMMARY

[0003] The present application aims to provide a self-filtering magnetic force pump to overcome the above-mentioned defects in the prior art.

[0004] According to the self-filtering magnetic force pump of the present application, the pump body is fixed to the end of the motor, the impeller in the pump body is fixed to the rotating shaft of the motor, and the filter device is fixed to the other end of the pump body. The filter device is in communication with the water inlet of the pump body. The filter device comprises a pipe body and a plurality of filter screens arranged in the pipe body. The cross section of the fluid in the pipe body is consistent with the filter screen when the fluid passes through the filter screen.

[0005] Through the above technical solution, the plurality of filter screens filter the impurities in the fluid, ensuring that the fluid entering the pump body remains pure, avoiding the impurities in the fluid from being stuck in the gap between the inner magnetic rotor and the spacer, and ensuring that the rotation of the inner magnetic rotor is not affected.

[0006] Preferably, the pipe body is a cylindrical shape composed of a first half pipe and a second half pipe. Two connecting flanges are fixed at the two ends of the first half pipe. A through hole is formed in the center of the connecting flange. The diameter of the through hole is smaller than the inner diameter of the pipe body. A connecting ring is fixed in the through hole. The connecting ring extends radially outward to form an extension ring at one end close to the pipe body. The end face of one side of the extension ring abuts against the connecting flange, and the end face of the other side is fixed with a sealing ring abutting against the inner wall of the pipe body.

[0007] Through the above technical solution, the sealing ring, the filter screen and the extension ring are beneficial to increasing the sealing property between the second half pipe and the connecting flange.

[0008] Preferably, the filter screens are arranged inclined from bottom to top along the water flow direction.

[0009] By the technical scheme, the filter screen arranged obliquely increases the contact area between the filter screen and the fluid, thereby increasing the filtering effect of the filter screen.

[0010] Preferably, a plurality of guide plates are fixed on the inner walls of the first half pipe and the second half pipe, the guide plates on the first half pipe and the second half pipe are aligned with each other, and a space with the same width as the filter screen is formed between the two opposite guide plates, the filter screen is arranged between the two opposite guide plates, and the filter screen, the two guide plates and the inner wall of the pipe body form an oval shape, and the projection of the oval shape on the connecting flange coincides with the inner wall of the pipe body.

[0011] By the technical scheme, the guide plates are arranged to facilitate the fixation of the filter screen and ensure the stability of the filter screen during the filtering process.

[0012] Preferably, a plurality of clamping plate seats are fixed on the outer periphery of the pipe body, the clamping plate seat is composed of a first half seat and a second half seat, the first half seat is fixed on the outer periphery of the first half pipe, the second half seat is fixed on the outer periphery of the second half pipe, a guide groove recessed along the inclined direction of the clamping plate seat and penetrating the pipe body and the guide plates is formed in the upper end surface of the clamping plate seat, a clamping plate is slidably connected in the guide groove, and the filter screen is fixed in the clamping plate.

[0013] By the technical scheme, the filter screen can slide along the guide groove with the clamping plate to the outside of the pipe body, so as to facilitate the cleaning of the filter screen.

[0014] Preferably, a resistance reduction opening recessed upward is formed in the lower end of the clamping plate, and when the filter screen is pulled out of the pipe body with the clamping plate, the upper side wall of the resistance reduction opening is aligned with the inner wall of the pipe body.

[0015] By the technical scheme, when the filter screen is pulled out of the pipe body, the resistance of the clamping plate to the fluid in the pipe body is reduced, and the flow loss of the fluid is reduced.

[0016] Preferably, the clamping plate is formed by overlapping two half plates, a filter water opening penetrating along the thickness of each half plate is formed in each half plate, a fitting groove surrounding the filter water opening is formed on one side of each half plate, and the filter screen is fitted in the fitting groove.

[0017] By the technical scheme, the filter screen can be easily repaired and replaced.

[0018] Preferably, a clamping plate head is sleeved on the upper end of the clamping plate, the clamping plate head abuts against the upper end surface of the clamping plate seat, two symmetrically arranged limiting blocks are fixed on one side edge of the clamping plate seat, a limiting rod is slidably connected between the two limiting blocks, a limiting portion is fixed on the lower end of the limiting rod, the limiting portion can abut against the lower end surface of the limiting block, the upper end of the limiting rod is fixed on the clamping plate head, and the length of the limiting rod is equal to the length of the filter screen.

[0019] Through the above technical solution, the limiting block restricts the sliding distance of the limiting part, thereby limiting the sliding distance of the clamping head and thus preventing the clamping plate from being completely pulled out of the clamping seat.

[0020] Preferably, a connecting plate is provided between two adjacent clamping plates and between the clamping plate and the connecting flange. The connecting plate is composed of a first side plate and a second side plate that overlap each other. The first side plate is fixed on the upper and lower sides of the first half-pipe, and the second side plate is fixed on the upper and lower sides of the second half-pipe. The first side plate and the second side plate are fixedly connected by bolts.

[0021] The above technical solution facilitates the assembly and disassembly of the first half-tube and the second half-tube.

[0022] The beneficial effects of this invention are: several filter screens filter impurities in the fluid, ensuring that the fluid entering the pump body remains pure, preventing impurities in the fluid from entering the pump body and getting stuck in the gap between the inner magnetic rotor and the isolation sleeve, ensuring that the rotation of the inner magnetic rotor is not affected, the inclined filter screens increase the contact area between them and the fluid, thereby increasing the filtration effect of the filter screens, and the filter screens can slide along the guide groove with the clamping plate to the outside of the tube body, so as to facilitate the cleaning of the filter screens, thereby ensuring the filtration effect of the filter screens. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is an exploded view of the present invention;

[0025] Figure 3 This is an exploded view of the filtration device in this invention;

[0026] Figure 4 This is a schematic diagram of the structure of the first half-tube in this invention;

[0027] Figure 5 This is the present invention. Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 This is a schematic diagram of the clamping plate in this invention;

[0029] Figure 7 This is a cross-sectional schematic diagram of the clamping plate in this invention.

[0030] In the picture:

[0031] 10, motor; 20, pump body; 30, connecting flange; 301, through hole; 40, pipe body; 40a, first half pipe; 40b, second half pipe; 401, guide plate; 41, connecting plate; 41a, first side plate; 41b, second side plate; 42, clamping plate seat; 42a, first half seat; 42b, second half seat; 421, guide groove; 422, limiting block; 50, sealing ring; 51, filter screen; 52, clamping plate; 52a, half plate; 521, resistance reduction opening; 523, filtered water opening; 522, fitting groove; 53, clamping plate head; 54, limiting rod; 541, limiting part; 55, connecting ring; 551, extension ring. DETAILED DESCRIPTION

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings shown in the accompanying drawings. Figure 1 The orientation or positional relationship shown is only for the convenience of describing the simplified description of the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In order to make the purpose and advantages of the present application more clear and explicit, the present application will be specifically described below in combination with examples, which should be understood as follows: the following text is only used to describe one or several specific embodiments of the present application, and does not strictly limit the protection scope of the present application, as used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human error, and the specific features of the self-filtering magnetic force pump are described in detail as follows:

[0034] An embodiment of the present application:

[0035] With reference to Figures 1-7 , the present application provides a self-filtering magnetic force pump, comprising a motor 10 and a pump body 20, the pump body 20 is fixed to the end of the motor 10, the impeller in the pump body 20 is fixed to the rotating shaft of the motor 10, the other end of the pump body 20 is fixed with a filtering device, the filtering device is communicated with the water inlet of the pump body 20, the filtering device comprises a pipe body 40 and three filter screens 51 arranged in the pipe body 40, the cross section of the fluid in the pipe body 40 is consistent with the filter screen 51 when passing through the filter screen 51, in this embodiment, the density of the three filter screens 51 gradually decreases along the fluid flow direction, so that the impurities in the fluid can be filtered by the three filter screens 51 respectively, avoiding the impurities from being completely accumulated on one filter screen 51 and affecting the fluid passing through.

[0036] With reference to Figure 3 , Figure 4The pipe body 40 is a cylinder composed of a first half pipe 40a and a second half pipe 40b. Two connecting flanges 30 are fixedly arranged at two ends of the first half pipe 40a. A through hole 301 is formed in the center of each connecting flange 30. The diameter of the through hole 301 is smaller than the inner diameter of the pipe body 40. A connecting ring 55 is fixedly arranged in the through hole 301. The connecting ring 55 extends radially outward to form an extension ring 551 close to one end of the pipe body 40. The extension ring 551 is in abutment with one side end face of the connecting flange 30. A sealing ring 50 is fixedly arranged on the other side end face of the extension ring 551 and in abutment with the inner wall of the pipe body 40. The filter screen 51 is arranged in a water flow direction from bottom to top.

[0037] Referring to Figure 3 Three guide plates 401 are fixedly arranged on the inner walls of the first half pipe 40a and the second half pipe 40b. The guide plates 401 on the first half pipe 40a and the second half pipe 40b are aligned with each other. Spacing is formed between two opposite guide plates 401, and the width of the spacing is equal to that of the filter screen 51. The filter screen 51 is arranged between the two opposite guide plates 401, and the three components form an oval shape. The projection of the oval shape and the inner wall of the pipe body 40 on the connecting flange 30 is coincident.

[0038] Referring to Figures 3-5 Three clamping plate seats 42 are fixedly arranged on the outer periphery of the pipe body 40. The clamping plate seat 42 is composed of a first half seat 42a and a second half seat 42b. The first half seat 42a is fixedly arranged on the outer periphery of the first half pipe 40a. The second half seat 42b is fixedly arranged on the outer periphery of the second half pipe 40b. A guide groove 421 is formed in the upper end face of the clamping plate seat 42. The guide groove 421 is recessed in the inclined direction of the clamping plate seat 42 and penetrates the pipe body 40 and the guide plate 401. A clamping plate 52 is slidably connected in the guide groove 421. The filter screen 51 is fixedly arranged in the clamping plate 52.

[0039] Referring to Figure 3 , Figure 6 A resistance reduction opening 521 is formed in the lower end of the clamping plate 52 and recessed upward. When the filter screen 51 is pulled out of the pipe body 40 along with the clamping plate 52, the upper side wall of the resistance reduction opening 521 is aligned with the inner wall of the pipe body 40. The clamping plate 52 is formed by overlapping two half plates 52a. A filter water opening 523 is formed in each half plate 52a and penetrates the thickness of the half plate 52a. A fitting groove 522 is formed on the side of each half plate 52a close to the other half plate 52a and surrounds the filter water opening 523. The filter screen 51 is fitted in the fitting groove 522.

[0040] Referring to Figure 5 , Figure 6 A clamping plate head 53 is sleeved on the upper end of the clamping plate 52. The clamping plate head 53 is in abutment with the upper end face of the clamping plate seat 42. Two symmetrical limiting blocks 422 are fixedly arranged on one side edge of the clamping plate seat 42. A limiting rod 54 is slidably connected between the two limiting blocks 422. A limiting portion 541 is fixedly arranged on the lower end of the limiting rod 54. The limiting portion 541 is in abutment with the lower end face of the limiting block 422. The upper end of the limiting portion 541 is fixedly arranged on the clamping plate head 53. The length of the limiting rod 54 is equal to the length of the filter screen 51.

[0041] Referring to Figure 3 The two adjacent clamping plate seats 42 and the clamping plate seat 42 and the connecting flange 30 are provided with connecting plates 41, the connecting plates 41 are composed of first side plates 41a and second side plates 41b which overlap each other, the first side plates 41a are fixedly arranged on the upper and lower sides of the first half pipe 40a, the second side plates 41b are fixedly arranged on the upper and lower sides of the second half pipe 40b, and the first side plates 41a and the second side plates 41b are connected by bolts.

[0042] In use, the water pipe is connected to the other connecting flange 30, the motor 10 is started, the impeller in the pump body 20 rotates, the water pipe draws fluid into the pump body 20, in the process, the impurities in the fluid are intercepted by the filter screen 51 after the fluid passes through the filter screen 51, the clean fluid enters the pump body 20, the impurities are prevented from being stuck between the inner magnetic rotor and the isolation cover, and the normal operation of the magnetic pump is ensured.

[0043] After a period of use, one of the clamping plate heads 53 can be pulled upward, the clamping plate 52 moves upward, the filter screen 51 moves upward to the upper side of the clamping plate seat 42, at this time, the filter screen 51 can be washed, the impurities on the filter screen 51 are washed down, and then the clamping plate 52 is pressed back to the initial position, so that the filtering effect is ensured.

[0044] Those skilled in the art can clearly make various modifications to the above embodiments without departing from the overall spirit and concept of the present application. All fall within the scope of the present application. The protection scheme of the present application is subject to the claims attached to the present application.

Claims

1. A self-filtering magnetic pump comprising an electric motor (10) and a pump body (20), characterized in that: The pump body (20) is fixed to the end of the motor (10), the impeller in the pump body (20) is fixed to the rotating shaft of the motor (10), the other end of the pump body (20) is fixed with a filtering device, the filtering device is communicated with the water inlet of the pump body (20), the filtering device comprises a pipe body (40) and a plurality of filter screens (51) arranged in the pipe body (40), the cross section of the fluid in the pipe body (40) is consistent with the filter screen (51) when passing through the filter screen (51); The pipe body (40) is a cylindrical shape composed of a first half pipe (40a) and a second half pipe (40b), two connecting flanges (30) are fixedly arranged at the two ends of the first half pipe (40a), a through hole (301) is formed in the center of the connecting flange (30), the diameter of the through hole (301) is smaller than the inner diameter of the pipe body (40), a connecting ring (55) is fixedly arranged in the through hole (301), the connecting ring (55) extends outward in the radial direction to form an extension ring (551) near one end of the pipe body (40), one side end face of the extension ring (551) abuts against the connecting flange (30), and the other side end face of the extension ring (551) is fixedly arranged with a sealing ring (50) abutting against the inner wall of the pipe body (40); The filter screen (51) is arranged in an inclined manner from bottom to top along the water flow direction; A plurality of guide plates (401) are fixedly arranged on the inner walls of the first half pipe (40a) and the second half pipe (40b), the guide plates (401) on the first half pipe (40a) and the second half pipe (40b) are aligned with each other, a space with the same width as the filter screen (51) is formed between the opposite two guide plates (401), the filter screen (51) is arranged between the opposite two guide plates (401), and the three form an oval shape, and the projection of the oval shape and the inner wall of the pipe body (40) on the connecting flange (30) is coincident; A plurality of clamping plate seats (42) are fixedly arranged on the outer periphery of the pipe body (40), the clamping plate seat (42) is composed of a first half seat (42a) and a second half seat (42b), the first half seat (42a) is fixedly arranged on the outer periphery of the first half pipe (40a), the second half seat (42b) is fixedly arranged on the outer periphery of the second half pipe (40b), an inclined guide groove (421) is formed in the upper end face of the clamping plate seat (42) and penetrates the pipe body (40) and the guide plate (401), a clamping plate (52) is slidably connected in the guide groove (421), and the filter screen (51) is fixedly arranged in the clamping plate (52).

2. A self-filtering magnetic drive pump according to claim 1, characterized in that: A downward recessed resistance reducing opening (521) is formed in the lower end of the clamping plate (52), when the filter screen (51) is pulled out of the pipe body (40) along with the clamping plate (52), the upper side wall of the resistance reducing opening (521) is aligned with the inner wall of the pipe body (40).

3. A self-filtering magnetic drive pump according to claim 2, characterized in that: The clamping plate (52) is formed by overlapping two half plates (52a), a water filtering opening (523) penetrating along the thickness of the half plate (52a) is formed in each half plate (52a), a fitting groove (522) surrounding the water filtering opening (523) is formed on one side of each half plate (52a) close to each other, and the filter screen (51) is fitted in the fitting groove (522).

4. A self-filtering magnetic drive pump according to claim 3, characterized in that: The upper end of the clamping plate (52) is sleeved with a clamping plate head (53), the clamping plate head (53) is in abutment with the upper end surface of the clamping plate seat (42), two symmetrical limiting blocks (422) are fixed on one side edge of the clamping plate seat (42), a limiting rod (54) is slidably connected between the two limiting blocks (422), a limiting portion (541) is fixed on the lower end of the limiting rod (54), the limiting portion (541) is in abutment with the lower end surface of the limiting block (422), the upper end of the limiting portion (541) is fixed on the clamping plate head (53), and the length of the limiting portion (54) is equal to the length of the filter screen (51).

5. The self-filtering magnetic drive pump of claim 1, wherein: Adjacent two clamping plate seats (42) and the clamping plate seat (42) and the connecting flange (30) are provided with a connecting plate (41), the connecting plate (41) is composed of a first side plate (41a) and a second side plate (41b) which overlap each other, the first side plate (41a) is fixed on the upper and lower two side edges of the first half pipe (40a), the second side plate (41b) is fixed on the upper and lower two side edges of the second half pipe (40b), and the first side plate (41a) and the second side plate (41b) are connected by bolt fixing.

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