Anti-clogging three-screw pump mechanism

Abstract

The present invention provides an anti-clogging three-screw pump mechanism, which includes a pump body, a filtering mechanism, a cleaning mechanism and a driving mechanism, wherein a water inlet pipe is provided on the pump body; the filtering mechanism includes a barrel connected between the first tube body and the second tube body, wherein the barrel body is provided with a filtering cavity evenly distributed along its circumference, and the filtering mechanism also includes a filter element detachably connected to the filtering cavity, wherein each filter element is provided with a sensing element; the cleaning mechanism is rotatably connected to the barrel body through a rotating shaft; the driving mechanism includes a driving shaft, a base provided at the end of the driving shaft, a pin protruding from the base away from the driving shaft, and a driven block coaxially arranged with the barrel body and sleeved on the outer periphery of the barrel body. In the anti-clogging three-screw pump mechanism provided by the present invention, the sensing element controls the driving mechanism to rotate the filtering mechanism, thereby replacing the filter element for filtering the material transported by the first tube body with the next one.

Description

Technical Field

[0001] The invention belongs to the technical field of screw pumps, and in particular relates to an anti-clogging three-screw pump mechanism. Background Art

[0002] The three-screw pump is formed by the pump body and the screw. When the active screw rotates, it drives the driven screw that meshes with it to rotate together. The screw meshing space volume at one end of the suction chamber gradually increases, and the pressure decreases. The solid debris mixed in the material transported by the three-screw pump will damage the rubber stator of the screw pump, causing the screw pump to wear and tear, resulting in a reduction in the service life of the screw pump. Generally, a filter device is installed at the water inlet end of the three-screw pump to filter impurities in the transported material. When it is necessary to clean the debris in the filter device, additional equipment is required to clean the filter device or the three-screw pump and the filter device are shut down, which affects the normal material transportation of the three-screw pump.

[0003] There are also filter elements installed at the water inlet end of the three-screw pump to prevent impurities from entering the three-screw pump. When there are too many impurities, if the material on the filter element is not cleaned in time, it will cause blockage, and no material will enter the three-screw pump, resulting in material interruption in the three-screw pump. The rubber stator will instantly generate high temperature and burn out due to dry friction, affecting the service life of the three-screw pump. In addition, the three-screw pump must be shut down when cleaning the filter element, affecting the normal transportation of materials. Summary of the invention

[0004] The embodiment of the present invention provides an anti-clogging three-screw pump mechanism, which aims to solve the technical problem in the prior art that when cleaning impurities at the filter element installed at the water inlet end of the three-screw pump, the three-screw pump needs to be shut down, affecting the normal material conveying of the three-screw pump, and if the filter element is not cleaned in time and causes blockage due to debris, the three-screw pump will be cut off, causing the rubber stator to burn out due to the instantaneous high temperature generated by dry friction, thereby affecting the service life of the three-screw pump.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide an anti-blocking three-screw pump mechanism, comprising:

[0006] A pump body, wherein the pump body is provided with a water inlet pipe, wherein the water inlet pipe comprises a second pipe body fixedly connected to the pump body, and a first pipe body spaced apart from the second pipe body, wherein the first pipe body is located above the second pipe body;

[0007] The filter mechanism comprises a barrel connected between the first barrel and the second barrel, the barrel being rotatably connected to the second barrel, the barrel being provided with filter cavities evenly distributed along its circumference, the filter cavities penetrating the barrel along the axial direction of the barrel, the filter mechanism further comprising a filter element detachably connected to the filter cavity, each of the filter elements being provided with a sensing element, the sensing element being used to control the operation of the driving mechanism, the upper end surface of the barrel extending upward to form a shell, the shell being provided with a through hole for the first barrel to extend into at one end away from the barrel, the first barrel being selectively connected to a plurality of the filter cavities, a plurality of openings being provided on the side wall of the barrel, the plurality of openings being arranged in one-to-one correspondence with and connected to the plurality of the filter cavities;

[0008] a debris removal mechanism, which is arranged in one-to-one correspondence with the plurality of openings, the debris removal mechanism being rotatably connected to the cylinder body via a rotating shaft, and the debris removal mechanism being used to block or open the openings; and

[0009] The driving mechanism includes a driving shaft, a base arranged at the end of the driving shaft, a pin shaft protruding from the base away from the driving shaft, and a driven block coaxially arranged with the cylinder body and sleeved on the outer periphery of the cylinder body, the driven block is slidably connected to the pin shaft, and the driving mechanism is communicatively connected to the sensing element.

[0010] In a possible implementation, the impurity removal mechanism includes a cover plate and an embedded block, one side of the cover plate is rotatably connected to the cylinder through the rotating shaft, the embedded block is arranged on the side of the cover plate away from the rotating shaft, and the cylinder is provided with a fixed block that cooperates with the embedded block.

[0011] In a possible implementation, grooves are provided on both sides of the embedded block, and two fixed blocks are provided opposite to each other. A side of each fixed block facing the embedded block is a stepped surface, and the stepped surfaces between the two fixed blocks are enclosed to form a fixed groove for the embedded block to be placed in. A telescopic rod is provided on the side of the fixed block facing the embedded block, and the telescopic rod includes a telescopic part and a second spring, and the second spring has a pre-tightening force that causes the telescopic part to be inserted into the groove.

[0012] In a possible implementation, a slide groove is provided on the side wall of the filter chamber and the side of the cover plate facing the filter element, the filter element is slidably connected to the slide groove, and a support spring is further provided between the filter element and the slide groove, and two ends of the support spring respectively abut against the bottom surface of the slide groove and the outer peripheral surface of the filter element, and the sensing element is located at one end of the support spring facing the filter element.

[0013] In a possible implementation, the bottom of the filter element is gradually inclined downward in a direction away from the axis of the cylinder, a discharge port is provided at the bottom of the filter element toward the side of the cover plate, a sliding groove is provided on the surface wall of the filter element, a baffle is slidably connected inside the sliding groove, a first spring is fixedly connected between the baffle and the sliding groove, the first spring has a pre-tightening force that causes the baffle to abut against the bottom of the filter element to block the discharge port, and a scraper is also provided on the inner periphery of the filter element, which contacts the baffle toward the side of the filter element axis.

[0014] In one possible implementation, the filter element includes a second core and a first core sleeved on the outer circumference of the second core, the second core is rotatably connected to the first core, the top surface of the second core is recessed to form an oblique groove, and the upper end surface of the first core is provided with a plug-in block for plugging and cooperating with the oblique groove.

[0015] In a possible implementation, the top inner diameter of the first tube core and the top outer diameter of the second tube core are spaced apart, a plurality of blocks are protruding from the inner wall of the first tube core, a plurality of limit blocks are provided on the outer periphery of the second tube core, the plurality of blocks and the plurality of limit blocks are alternately arranged along the circumference of the second tube core, a third spring is provided between adjacent blocks and the limit blocks, and the third spring has a pre-tightening force that brings the block and the limit block close to each other.

[0016] In a possible implementation, a mounting platform is protruded from the inner wall of one end of the second tube body facing the cylinder, and the mounting platform is used to support the cylinder. A sealing ring is installed in the annular gap between the second tube body and the cylinder, and the sealing ring is located above the mounting platform. A pressure block is also provided on the outer periphery of the cylinder, and the pressure block can move up and down along the axial direction of the cylinder, and squeeze the two ends of the sealing ring respectively with the mounting platform.

[0017] In a possible implementation, an adjustment mechanism is also provided on the outer wall of the cylinder, and the adjustment mechanism includes an adjustment plate and an adjustment bolt. The adjustment plate is fixedly connected to the outer wall of the cylinder and is horizontally arranged. A threaded hole matching the adjustment bolt is opened on the adjustment plate. The adjustment bolt passes through the threaded hole and is used to squeeze the pressure block.

[0018] In a possible implementation, the first tube body includes a first mounting tube and a second mounting tube, the second mounting tube is slidably fitted with the first mounting tube, and one end of the second mounting tube facing away from the first mounting tube is tapered for insertion into one of the filter cavities.

[0019] The anti-clogging three-screw pump mechanism provided by the present invention is compared with the prior art. The pump body is provided with a water inlet pipe, the water inlet pipe includes a first tube body and a second tube body distributed at intervals, the second tube body is fixedly connected to the pump body, the filtering mechanism includes a cylinder body connected to the first tube body and the second tube body, the filter cavity penetrates the cylinder body along the axial direction of the cylinder body, and is used to place a filter element detachably connected to the filter cavity, the sensing element on the filter element is used to sense the pressure exerted on the filter element to control the operation of the driving mechanism, the first tube body extends into the shell body and is connected to one of the filter cavities, and is used to convey materials to the filtering mechanism, the impurity removal mechanism is arranged one-to-one with multiple openings on the side wall of the cylinder body, and is used to clean blocked filter elements, the driving mechanism includes a driving shaft and a driven block, the driven block is arranged on the outer periphery of the control filtering mechanism, and is used to control the filtering mechanism to rotate along its own axial direction. The anti-clogging three-screw pump mechanism provided by the present invention is provided with a filtering mechanism, a first tube body extends into the shell body and is connected with one of the filter elements, and the second tube body is connected with the pump body. When the debris in the filter element reaches a certain amount, the sensing element senses the pressure on the filter element and transmits a signal to the driving mechanism to control the operation of the driving mechanism to rotate the filtering mechanism, thereby replacing the filter cavity connected with the first tube body with the next one, and then cleaning the clogged filter element through the impurity removal mechanism, and putting the cleaned filter element back to its original position, which can effectively avoid the blockage caused by the failure to clean the filter element in time, causing the three-screw pump to break, thereby affecting the service life of the three-screw pump, thereby ensuring that the pump body can continuously transport the filtered material. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic cross-sectional view of the anti-clogging three-screw pump mechanism provided in the first embodiment of the present invention;

[0021] Figure 2 A side view schematic diagram of the connection structure between the fixed block and the embedded block adopted in the second embodiment of the present invention adopted in the first embodiment of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0023] Figure 4 It is a partial cross-sectional structural schematic diagram of the anti-clogging three-screw pump mechanism used in the first embodiment of the present invention;

[0024] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 6 This is a partial cross-sectional structural schematic diagram of a filter element used in Example 1 of the present invention;

[0026] Figure 7 This is a schematic cross-sectional view of the filter element used in the second embodiment of the present invention;

[0027] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at CC in the middle;

[0028] Fig. 9 This is a schematic diagram of a partial cross-sectional structure of a first tube body used in the second embodiment of the present invention;

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the driving mechanism adopted in the second embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 10-pump body; 11-water inlet pipe; 111-first pipe body; 1111-first mounting pipe; 1112-second mounting pipe; 1113-limiting groove; 1114-connecting block; 1125-elastic element; 112-second pipe body; 113-mounting platform; 114-sealing ring;

[0032] 20-filter mechanism; 21-cylinder; 211-opening; 22-filter chamber; 221-slideway; 222-support spring; 23-filter element; 231-discharge port; 232-slideway; 233-blocking plate; 234-first spring; 235-scraper; 24-sensing element; 25-housing; 251-through hole; 26-pressing block; 27-adjusting mechanism; 271-adjusting plate; 272-adjusting bolt; 273-threaded hole; 28-first cylinder core; 281-plug-in block; 282-stopper; 283-third spring; 29-second cylinder core; 291-oblique groove; 292-limiting block;

[0033] 30-removal mechanism; 31-rotating shaft; 32-cover plate; 33-embedded block; 331-groove; 34-fixed block; 341-telescopic rod; 342-second spring; 35-fixed groove

[0034] 40-driving mechanism; 41-driving shaft; 42-pin shaft; 43-base; 44-driven block; 441-arc groove; 45-cam block. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Please also read Figures 1 to 10, the anti-clogging three-screw pump mechanism of the present invention is described. The anti-clogging three-screw pump mechanism includes a pump body 10, a filtering mechanism 20, a de-impurity mechanism 30 and a driving mechanism 40. The pump body 10 is provided with a water inlet pipe 11, and the water inlet pipe 11 includes a second tube body 112 fixedly connected to the pump body 10, and a first tube body 111 spaced apart from the second tube body 112, and the first tube body 111 is located above the second tube body 112; the filtering mechanism 20 includes a barrel 21 connected between the first tube body 111 and the second tube body 112, the barrel 21 is rotatably connected to the second tube body 112, and the barrel 21 is provided with filter cavities 22 evenly distributed along its circumference, and the filter cavity 22 penetrates the barrel 21 along the axial direction of the barrel 21, and the filtering mechanism 20 also includes a filter element 23 detachably connected to the filter cavity 22, and each filter element 23 is provided with a sensing element 24, and the sensing element 24 is used to control the operation of the driving mechanism 40, and the upper end of the barrel 21 The shell 25 is extended upwardly, and one end of the shell 25 away from the cylinder 21 is surrounded by a through hole 251 for the first tube 111 to extend into. The first tube 111 is selectively connected to multiple filter chambers 22. A plurality of openings 211 are provided on the side wall of the cylinder 21. The plurality of openings 211 are arranged in a one-to-one correspondence with the plurality of filter chambers 22 and are connected; the impurity removal mechanism 30 is arranged in a one-to-one correspondence with the plurality of openings 211, and the impurity removal mechanism 30 is rotatably connected to the cylinder 21 through a rotating shaft 31. The impurity removal mechanism 30 is used to block or open the opening 211; the driving mechanism 40 includes a driving shaft 41, a base 43 provided at the end of the driving shaft 41, a pin 42 protruding from the base 43 away from the driving shaft 41, and a driven block 44 coaxially arranged with the cylinder 21 and sleeved on the outer periphery of the cylinder 21, the driven block 44 is slidably connected to the pin 42, and the driving mechanism 40 is communicatively connected with the sensing element 24.

[0037] Compared with the prior art, the anti-clogging three-screw pump mechanism provided by the present invention has a water inlet pipe 11 on the pump body 10, the water inlet pipe 11 includes a first tube body 111 and a second tube body 112 distributed at intervals, the second tube body 112 is fixedly connected to the pump body 10, the filter mechanism 20 includes a barrel 21 connected to the first tube body 111 and the second tube body 112, the filter cavity 22 penetrates the barrel 21 along the axial direction of the barrel 21, and is used to place a filter element 23 detachably connected to the filter cavity 22, and the induction element 2 on the filter element 23 is The first tube 111 extends into the housing 25 and is connected to one of the filter chambers 22, and is used to convey materials to the filter mechanism 20. The impurity removal mechanism 30 is arranged in one-to-one correspondence with the plurality of openings 211 on the side wall of the cylinder 21, and is used to clean the clogged filter element 23. The drive mechanism 40 includes a driving shaft 41 and a driven block 44, and the driven block 44 is arranged on the outer periphery of the control filter mechanism 20, and is used to control the filter mechanism 20 to rotate along its own axis. The anti-clogging three-screw pump mechanism provided by the present invention is provided with a filtering mechanism 20, a first tube body 111 extends into the shell body 25 and is connected to one of the filter elements 23, and a second tube body 112 is connected to the pump body 10. When the amount of debris in the filter element 23 reaches a certain amount, the sensing element 24 senses the pressure on the filter element 23 and transmits a signal to the driving mechanism 40 and controls the driving mechanism 40 to rotate the filtering mechanism 20, thereby replacing the filtering chamber 22 connected to the first tube body 111 with the next one, and then cleaning the clogged filter element 23 through the impurity removal mechanism 30, and putting the cleaned filter element 23 back to its original position, which can effectively avoid the blockage caused by the failure to clean the filter element 23 in time, causing the three-screw pump to break, thereby affecting the service life of the three-screw pump, thereby ensuring that the pump body 10 can continuously transport the filtered material.

[0038] Optionally, a cam block 45 is further provided on one side of the base 43 away from the pin 42, and an arc groove 441 matching the cam block 45 is provided on the driven block 44. When the driving mechanism 40 drives the filter mechanism 20 to rotate, the pin 42 and the cam block 45 are intermittently in contact with the driven block 44, thereby ensuring the normal operation between the driving mechanism 40 and the filter mechanism 20 (such as Fig.10 shown).

[0039] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 1 See the structure shown. Figure 1The impurity removal mechanism 30 includes a cover plate 32 and an embedded block 33. One side of the cover plate 32 is rotatably connected to the cylinder 21 through a rotating shaft 31. The embedded block 33 is arranged on the side of the cover plate 32 away from the rotating shaft 31. A fixed block 34 cooperating with the embedded block 33 is provided on the cylinder 21. The impurity removal mechanism 30 and the cylinder 21 can be hingedly connected through the rotating shaft 31. In specific implementation, when the filtering mechanism 20 filters the material, the fixed block 34 cooperates with the embedded block 33 to realize the sealing of the opening 211, so as to prevent the material from flowing out from the gap between the cylinder 21 and the impurity removal mechanism 30, resulting in waste of the material. When the filter element 23 of the filtered material is blocked by debris, the filtering mechanism 20 rotates to replace the filter element 23 of the filtered material. At this time, the impurity removal mechanism 30 at the blocked debris position can be operated, and the cover plate 32 can be moved to rotate along the rotating shaft 31, and the blocked filter element 23 can be removed from the filter chamber 22, and the cleaned filter element 23 can be installed back to the original position, so as to complete the cleaning of the filter element 23 and ensure the normal operation of the filtering mechanism 20.

[0040] Optionally, the fixing block 34 and the embedding block 33 may be matched with each other by plugging, snapping or the like.

[0041] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 2 and Figure 3 See the structure shown. Figure 2 and Figure 3 , grooves 331 are provided on both sides of the embedded block 33, and two fixed blocks 34 are provided opposite to each other. The side of each fixed block 34 facing the embedded block 33 is a stepped surface, and the stepped surfaces between the two fixed blocks 34 are enclosed to form a fixed groove 35 for the embedded block 33 to be placed. A telescopic rod 341 is provided on the side of the fixed block 34 facing the embedded block 33. The telescopic rod 341 includes a telescopic part and a second spring 342. The second spring 342 has a pre-tightening force that allows the telescopic part to be inserted into the groove 331.

[0042] The fixed block 34 is provided with a telescopic rod 341 that matches with the grooves 331 on both sides of the embedded block 33. The embedded block 33 is placed in the fixed groove 35 surrounded by the two fixed blocks 34. In specific implementation, the position where the end surface of the embedded block 33 away from the cover plate 32 contacts the bottom surface of the fixed groove 35 is provided with a matching arc transition. During the rotation of the cover plate 32 around the rotating shaft 31, it will not collide with the cylinder 21 or the fixed block 34. The end of the telescopic rod 341 facing the embedded block 33 can be provided with a round head that matches with the groove 331. The rod body of the telescopic rod 341 and the round head cooperate as a telescopic part. After cleaning and installing the cleaned filter element 23, the cover plate 32 is moved to reset it, and the embedded block 33 contacts with the two fixed blocks 34 and completes the blocking of the opening 211. The round head of the telescopic rod 341 contacts the groove 331 and squeezes the second spring 342. When the round head of the telescopic rod 341 moves into the groove 331, the second spring 342 releases the pressure to squeeze the round head, so that the round head is firmly abutted against the groove 331, so that during the rotation of the filter mechanism 20, the cover plate 32 and the fixed block 34 will not be easily loosened. When the filter element 23 needs to be cleaned, the cover plate 32 can be moved to rotate it around the rotating shaft 31, and the round head of the telescopic rod 341 automatically slides out of the groove 331; when the filter element 23 needs to be cleaned, only the cover plate 32 needs to be moved, and the sliding cooperation between the round head of the telescopic rod 341 and the groove 331 completes the limitation of the cover plate 32, thereby facilitating the staff to operate the impurity removal mechanism 30 to clean the filter element 23.

[0043] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 4 See the structure shown. Figure 4 A slide groove 221 is provided on the side wall of the filter chamber 22 and the side of the cover plate 32 facing the filter element 23. The filter element 23 is slidably connected to the slide groove 221. A support spring 222 is also provided between the filter element 23 and the slide groove 221. The two ends of the support spring 222 are respectively in contact with the bottom surface of the slide groove 221 and the outer peripheral surface of the filter element 23. The sensing element 24 is located at one end of the support spring 222 facing the filter element 23.

[0044] The filter element 23 is slidably connected to the slide groove 221, and a support spring 222 is provided between the filter element 23 and the slide groove 221. When the filter element 23 starts to filter the material conveyed by the first tube body 111, the debris gradually covers the mesh of the filter element 23. When the debris completely covers the mesh, the entering material directly acts on the blocked filter element 23. Under the action of pressure, the filter element 23 slides downward along the slide groove 221 and compresses the support spring 222. When the sensing element 24 senses that the pressure transmitted by the support spring 222 reaches a preset value, it can be timely The signal is transmitted to the driving mechanism 40 to drive the filter mechanism 20 to rotate, thereby replacing the filter element 23 of the filter material, and completing the replacement of the filter element 23 of the filter material; by setting the support spring 222, the sensing element 24 is prevented from being placed directly between the bottom surface of the slide groove 221 and the filter element 23. When the pressure on the filter element 23 is too large, the sensing element 24 is crushed. When the filter element 23 slides down, the filter element 23 can be supported, so that the filter element 23 slides smoothly when it slides down, thereby ensuring the smooth operation of the filter mechanism 20.

[0045] During specific implementation, the support spring 222 is detachably connected to the bottom surface of the sliding groove 221 .

[0046] Optionally, the driving shaft 41 of the driving mechanism 40 can be connected to the output shaft of the motor, and the sensing element 24 can be a pressure sensor, which can be transmitted to the control system via Bluetooth, wireless, etc. The control system controls the operation of the motor to drive the driving mechanism 40 to rotate. Before conveying the material, a preset value can be set on the control system. When the pressure sensed by the sensing element 24 reaches the preset value, the signal can be transmitted to the control system in time, so that the filtering mechanism 20 rotates to replace the filter element 23 of the filtering material, thereby ensuring normal filtration of the material.

[0047] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 6 See the structure shown. Figure 6The bottom of the filter element 23 is gradually inclined downward in a direction away from the axis of the cylinder 21, and a discharge port 231 is provided at the bottom of the filter element 23 facing the side of the cover plate 32. A sliding groove 232 is provided on the surface wall of the filter element 23. A blocking plate 233 is slidably connected inside the sliding groove 232. A first spring 234 is fixedly connected between the blocking plate 233 and the sliding groove 232. The first spring 234 has a pre-tightening force that makes the blocking plate 233 abut against the bottom of the filter element 23 to block the discharge port 231. A scraper 235 is also provided on the inner periphery of the filter element 23, which contacts the blocking plate 233 on the side of the axis of the filter element 23. In a specific implementation, a discharge port 231 is provided at the bottom of the filter element 23 facing the side of the cover plate 32. When the filter element 23 filters materials, the filtered debris remains in the filter element 23 and moves toward the discharge port 231. When the filter element 23 is blocked, the filter mechanism 20 rotates to replace the filter element 23 that filters the materials, and the blocked filter element 23 no longer filters the materials. At this time, the cover plate 32 can be manually moved to rotate around the rotating shaft 31, and the blocked filter element 23 leaks out at the opening 211, and the baffle plate 233 is lifted and the first spring 234 begins to be compressed. It is set to be tilted downward, and the debris in the filter element 23 flows out from the discharge port 231. There is no need to remove the filter element 23 from the filter chamber 22, which makes it easy for the staff to clean the blocked filter element 23. When all the debris has flowed out, the baffle 233 is released. The baffle 233 is reset under the action of the first spring 234 and firmly abuts against the lower end surface of the filter element 23, and will not move easily under the influence of external force. During the movement of the baffle 233, the scraper 235 can clean up the debris left on the baffle 233, thereby effectively improving the movement smoothness of the baffle 233.

[0048] Optionally, mesh holes may be provided on the baffle 233 to facilitate filtering of the material.

[0049] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 7 See the structure shown. Figure 7The filter element 23 includes a second core 29 and a first core 28 sleeved on the outer periphery of the second core 29. The second core 29 is rotatably connected to the first core 28. The top surface of the second core 29 is recessed to form an oblique groove 291. The oblique groove 291 is arranged parallel to the vertical direction. The upper end surface of the first core 28 is provided with a plug-in block 281 for plugging and cooperating with the oblique groove 291. The second barrel core 29 is rotatably connected to the first barrel core 28. When the first barrel core 28 and the second barrel core 29 are in the initial position, the mesh holes on the first barrel core 28 and the second barrel core 29 overlap. When the size of the mesh holes needs to be adjusted, the plug-in block 281 can be pressed in the direction of the oblique groove 291 by external force. When just entering the oblique groove 291, the second barrel core 29 starts to rotate by using the corresponding inclined surfaces of the oblique groove 291 and the plug-in block 281. At this time, the mesh holes of the second barrel core 29 and the mesh holes on the first barrel core 28 begin to cover each other, and the volume of particulate matter that can pass through the filter element 23 is reduced, thereby completing the change in the size of the mesh holes on the filter element 23. The size of the mesh holes can be adjusted at any time according to the situation of the required filtering material, so that the filter element 23 meets the filtering needs of materials with different filtering requirements.

[0050] Specifically, the oblique groove 291 can be an annular groove. If it is an annular groove, one of the side walls between its inner diameter and outer diameter is an inclined surface, which is gradually inclined from top to bottom; the oblique groove 291 can also be a plurality of evenly arranged along the axial direction of the second barrel core 29, and one side wall of each oblique groove 291 away from the adjacent oblique groove 291 is an inclined surface, which is gradually inclined from top to bottom.

[0051] Optionally, after the plug-in block 281 moves to a corresponding position, it can be fixed on the first barrel core 28 by means of snap connection, threaded connection, etc., to fix the relative position between the second barrel core 29 and the first barrel core 28.

[0052] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 8 See the structure shown. Figure 8The top inner diameter of the first barrel core 28 and the top outer diameter of the second barrel core 29 are spaced apart, a plurality of blocks 282 are protruding from the inner wall of the first barrel core 28, a plurality of limit blocks 292 are provided on the outer periphery of the second barrel core 29, the plurality of blocks 282 and the plurality of limit blocks 292 are alternately arranged along the circumference of the second barrel core 29, a third spring 283 is provided between adjacent blocks 282 and limit blocks 292, and the third spring 283 has a pre-tightening force that makes the block 282 and the limit block 292 approach each other. By setting the third spring 283, when the filter element 23 completes filtering, the movable plug-in block 281 makes it slide out of the oblique groove 291, and the third spring 283 pulls the second barrel core 29 to rotate in the first barrel core 28 through the limit block 292, so that the second barrel core 29 and the first barrel core 28 are restored to the initial state where the filter screens therebetween overlap with each other; multiple third springs 283 are set to ensure the normal rotation between the first barrel core 28 and the second barrel core 29, and effectively avoid the situation where the third spring 283 is disconnected when a single third spring 283 is set, and the second barrel core 29 and the first barrel core 28 cannot be restored to the initial state after the plug-in block 281 is moved.

[0053] Specifically, when a block 282 , a limit block 292 and a third spring 293 are provided between the first barrel core 28 and the second barrel core 29 , the inclined surface of the oblique groove 291 is arranged in the same direction as the stretching direction of the third spring 283 between the adjacent block 282 and the limit block 292 .

[0054] Optionally, when the filter element 23 includes a first core 28 and a second core 29, a corresponding discharge port 231 may be opened on the same side of the two, and a corresponding sliding groove 232, a first spring 234 and a baffle 233 may be set, and a scraper 235 may be set only on the inner periphery of the second core 29. When the baffle 233 on the first core 28 is lifted, the baffle 233 on the second core 29 may be driven to move, and debris in the second core 29 may flow out from the gap formed by the two discharge ports 231.

[0055] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 4 and Figure 5 See the structure shown. Figure 4 and Figure 5A mounting platform 113 is protruded on the inner wall of one end of the second tube body 112 facing the cylinder body 21. The mounting platform 113 is used to support the cylinder body 21. A sealing ring 114 is installed in the annular gap between the second tube body 112 and the cylinder body 21. The sealing ring 114 is located above the mounting platform 113. A pressing block 26 is also provided on the outer periphery of the cylinder body 21. The pressing block 26 can move up and down along the axial direction of the cylinder body 21, and squeezes the two ends of the sealing ring 114 respectively together with the mounting platform 113. A sealing ring 114 is provided between the second tube body 112 and the cylinder body 21, and the sealing ring 114 is located above the mounting platform 113. The pressure block 26 can squeeze the sealing ring 114 and the pressure block 26 can move up and down along the axial direction of the cylinder body 21. By setting the sealing ring 114, when the three-screw pump is operating normally, the outside air can be effectively prevented from entering the anti-clogging three-screw pump mechanism of the present application, thereby affecting the normal operation of the three-screw pump; the filtering mechanism 20 is rotatably connected to the second tube body 112, and the sealing ring 114 will wear after long-term use, and the sealing effect of the sealing ring 114 will decrease, resulting in a gap between the second tube body 112 and the cylinder body 21. At this time, the pressing plate can be moved to squeeze the sealing ring 114, thereby increasing the pressure of the pressing plate on the sealing ring 114, so that the sealing ring 114 is fully in contact with the second tube body 112 and the cylinder body 21, filling the gap between the second tube body 112 and the cylinder body 21, and effectively enhancing the sealing effect of the sealing ring 114.

[0056] Optionally, a sealing device, such as a sealing ring 114 , a sealing gasket, etc., may also be provided at the connection between the first tube body 111 and the shell 25 and at the opening 211 on the cylinder body 21 .

[0057] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Figure 4 and Figure 5 See the structure shown. Figure 4 and Figure 5An adjusting mechanism 27 is also provided on the outer wall of the cylinder 21. The adjusting mechanism 27 includes an adjusting plate 271 and an adjusting bolt 272. The adjusting plate 271 is fixedly connected to the outer wall of the cylinder 21 and is horizontally arranged. A threaded hole 273 matching the adjusting bolt 272 is opened on the adjusting plate 271. The adjusting bolt 272 passes through the threaded hole 273 and is used to squeeze the pressing block 26. The adjusting bolt 272 and the threaded hole 273 cooperate with each other. By turning the adjusting bolt 272, it moves along the axial direction of the threaded hole 273, thereby squeezing the pressure block 26 to increase the pressure of the pressure plate on the sealing ring 114. In specific implementation, a plurality of pressure blocks 26 and adjusting mechanisms 27 can be provided, so that the circumference of the sealing ring 114 can be controlled by the adjusting mechanism 27 to ensure the sealing effect of the circumference of the sealing ring 114. As the sealing ring 114 continues to wear, it is necessary to continuously turn the adjusting bolt 272 to maintain the pressure on the pressure block 26 and the sealing ring 114 so that the sealing ring 114 always maintains a good sealing effect. When turning the adjusting bolt 272, the position of the adjusting bolt 272 on the adjusting plate 271 can be observed. When the end of the adjusting bolt 272 away from the sealing ring 114 approaches the adjusting plate 271, it indicates that the sealing ring 114 is seriously damaged and needs to be replaced with a new sealing ring 114.

[0058] As a variation of the above-mentioned embodiment, a positioning scale for displaying the degree of wear of the sealing ring 114 can be provided on the outer surface of the pressing block 26. As the sealing ring 114 continues to wear, the position of the pressing block 26 needs to be continuously adjusted. As the pressing block 26 continues to move, the exposed portion of the pressing block 26 continues to decrease. The moving distance of the pressing block 26, that is, the degree of wear of the sealing ring 114, is convenient for prompting the operator to replace it in time.

[0059] In some embodiments, an improved implementation of the above-mentioned anti-clogging three-screw pump mechanism can be adopted as follows Fig. 9 See the structure shown. Fig. 9 The first tube body 111 includes a first mounting tube 1111 and a second mounting tube 1112. The second mounting tube 1112 is slidably matched with the first mounting tube 1111. The end of the second mounting tube 1112 away from the first mounting tube 1111 is tapered and is used to be inserted into one of the filter cavities 22. The second mounting tube 1112 is slidably matched with the first mounting tube 1111, and the end of the second mounting tube 1112 away from the first mounting tube 1111 is tapered and inserted into the filter cavity 22. When the mesh of one of the filter elements 23 of the filter mechanism 20 is completely covered, the filter mechanism 20 rotates, and the second mounting tube 1112 moves upward and slides on the upper end surface of the cylinder 21, and extends into the next filter cavity 22 as the filter mechanism 20 rotates, so that the filter element 23 in the filter cavity 22 continues to filter the material transported by the first tube body 111, thereby completing the process of replacing the filter element 23 of the filter material by the filter mechanism 20.

[0060] It should be noted that the two adjacent filter chambers 22 can be called the first filter chamber 22 and the second filter chamber 22. When the second mounting tube 1112 slides on the upper end surface of the cylinder 21, the tapered mouth of the first tube body 111 has begun to contact the second filter chamber 22 before completely breaking contact with the first filter chamber 2222. The material transported by the first tube body 111 can flow into the pump body 10 uninterruptedly, thereby avoiding the situation where the pump body 10 is cut off from the material.

[0061] As a variation of the above embodiment, the following may be adopted: Fig. 9 See the structure shown. Fig. 9 A limiting groove 1113 is provided on the inner wall of the first mounting tube 1111, and a connecting block 1114 is provided on the outer wall of one end of the second mounting tube 1112 facing the first mounting tube 1111. An elastic element 1125 is also provided between the limiting groove 1113 and the connecting block 1114, and the elastic element 1125 has a pre-tightening force that makes the second mounting tube 1112 abut against the side wall of the filter chamber 22. An elastic element 1125 is connected between the limiting groove 1113 on the first mounting tube 1111 and the connecting block 1114 on the second mounting tube 1112. The elastic element 1125 has a pre-tightening force. The second mounting tube 1112 compresses the elastic element 1125 as the filter mechanism 20 rotates. When the next filter chamber 22 rotates to the position of the second mounting tube 1112, the elastic element 1125 pushes the second mounting tube 1112 to move downward, so that the second mounting tube 1112 extends into the filter chamber 22. By arranging the elastic element 1125, it is avoided that there are debris between the first mounting tube 1111 and the second mounting tube 1112, which causes the second mounting tube 1112 to be unable to extend into the filter chamber 22 under the action of gravity, thereby ensuring the smooth operation of the anti-clogging three-screw pump mechanism of the present application.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-clogging three-screw pump mechanism, characterized in that: include: A pump body, wherein the pump body is provided with a water inlet pipe, wherein the water inlet pipe comprises a second pipe body fixedly connected to the pump body, and a first pipe body spaced apart from the second pipe body, wherein the first pipe body is located above the second pipe body; The filter mechanism comprises a barrel connected between the first barrel and the second barrel, the barrel being rotatably connected to the second barrel, the barrel being provided with filter cavities evenly distributed along its circumference, the filter cavities penetrating the barrel along the axial direction of the barrel, the filter mechanism further comprising a filter element detachably connected to the filter cavity, each of the filter elements being provided with a sensing element, the sensing element being used to control the operation of the driving mechanism, the upper end surface of the barrel extending upward to form a shell, the shell being provided with a through hole for the first barrel to extend into at one end away from the barrel, the first barrel being selectively connected to a plurality of the filter cavities, a plurality of openings being provided on the side wall of the barrel, the plurality of openings being arranged in one-to-one correspondence with and connected to the plurality of the filter cavities; A debris removal mechanism is arranged corresponding to the plurality of openings one by one, the debris removal mechanism is rotatably connected to the cylinder body via a rotating shaft, and the debris removal mechanism is used to block or open the openings; as well as The driving mechanism includes a driving shaft, a base arranged at the end of the driving shaft, a pin shaft protruding from the base away from the driving shaft, and a driven block coaxially arranged with the cylinder body and sleeved on the outer periphery of the cylinder body, the driven block is slidably connected to the pin shaft, and the driving mechanism is communicatively connected to the sensing element.

2. The anti-clogging three-screw pump mechanism according to claim 1, characterized in that: The impurity removal mechanism includes a cover plate and an embedded block. One side of the cover plate is rotatably connected to the cylinder through the rotating shaft. The embedded block is arranged on the side of the cover plate away from the rotating shaft. A fixed block cooperating with the embedded block is arranged on the cylinder.

3. The anti-clogging three-screw pump mechanism according to claim 2, characterized in that: Grooves are provided on both sides of the embedded block, and two fixed blocks are provided opposite to each other. The side of each fixed block facing the embedded block is a stepped surface, and the stepped surfaces between the two fixed blocks are enclosed to form a fixed groove for the embedded block to be placed in. A telescopic rod is provided on the side of the fixed block facing the embedded block, and the telescopic rod includes a telescopic part and a second spring, and the second spring has a pre-tightening force that allows the telescopic part to be inserted into the groove.

4. The anti-clogging three-screw pump mechanism according to claim 2, characterized in that: The side wall of the filter chamber and the side of the cover plate facing the filter element are both provided with a slide groove, the filter element is slidably connected to the slide groove, and a support spring is also provided between the filter element and the slide groove, the two ends of the support spring are respectively abutted against the bottom surface of the slide groove and the outer peripheral surface of the filter element, and the sensing element is located at one end of the support spring facing the filter element.

5. The anti-clogging three-screw pump mechanism according to claim 2, characterized in that: The bottom of the filter element is gradually inclined downward in a direction away from the axis of the cylinder, a discharge port is provided at the bottom of the filter element toward the side of the cover plate, a sliding groove is provided on the surface wall of the filter element, a baffle is slidably connected inside the sliding groove, a first spring is fixedly connected between the baffle and the sliding groove, the first spring has a pre-tightening force that makes the baffle abut against the bottom of the filter element to block the discharge port, and a scraper is also provided on the inner periphery of the filter element, which contacts the baffle toward the side of the filter element axis.

6. The anti-clogging three-screw pump mechanism according to claim 1, characterized in that: The filter element includes a second core and a first core sleeved on the outer circumference of the second core, the second core is rotatably connected to the first core, the top surface of the second core is recessed to form an oblique groove, and the upper end surface of the first core is provided with a plug-in block for plugging and cooperating with the oblique groove.

7. The anti-clogging three-screw pump mechanism according to claim 6, characterized in that: The top inner diameter of the first tube core and the top outer diameter of the second tube core are spaced apart, a plurality of blocks are protruding from the inner wall of the first tube core, a plurality of limit blocks are arranged on the outer periphery of the second tube core, the plurality of blocks and the plurality of limit blocks are alternately arranged along the circumference of the second tube core, a third spring is arranged between adjacent blocks and the limit blocks, and the third spring has a pre-tightening force that makes the block and the limit block close to each other.

8. The anti-clogging three-screw pump mechanism according to claim 1, characterized in that: A mounting platform is protruded on the inner wall of one end of the second tube body facing the cylinder body, and the mounting platform is used to support the cylinder body. A sealing ring is installed in the annular gap between the second tube body and the cylinder body, and the sealing ring is located above the mounting platform. A pressing block is also provided on the outer periphery of the cylinder body, and the pressing block can move up and down along the axial direction of the cylinder body, and respectively squeezes the two ends of the sealing ring together with the mounting platform.

9. The anti-clogging three-screw pump mechanism according to claim 8, characterized in that: An adjustment mechanism is also provided on the outer wall of the cylinder, and the adjustment mechanism includes an adjustment plate and an adjustment bolt. The adjustment plate is fixedly connected to the outer wall of the cylinder and is horizontally arranged. A threaded hole matching the adjustment bolt is opened on the adjustment plate. The adjustment bolt passes through the threaded hole and is used to squeeze the pressure block.

10. The anti-clogging three-screw pump mechanism according to claim 1, characterized in that: The first tube body comprises a first mounting tube and a second mounting tube, the second mounting tube is slidably matched with the first mounting tube, and one end of the second mounting tube away from the first mounting tube is tapered for being inserted into one of the filter cavities.

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