A pre-filter mechanism for a gear pump

Abstract

The utility model relates to gear pump technical field, concretely is a kind of front filter mechanism for gear pump, it includes: base, the top surface of base is equipped with motor, the output end of motor is connected with pump body;Filtering structure is installed on the base, and the filtering structure includes filter box, and the filter box is fixedly installed on the top surface of base, the middle part of the top surface of filter box is equipped with clamping groove, installation slot is equipped on the two side walls of clamping groove, rotating groove is equipped on the side wall of installation slot, discharge slot is equipped on the left and right side walls of filter box, and filter screen is installed in the left end inside of filter box.The utility model is set up threaded rod, can be inserted in discharge slot after being removed, to facilitate the swing of scraping plate in filter box inside, the sundries on the surface of filter screen and inside filter box can be pushed and cleaned, so that sundries is discharged via discharge slot, it is convenient for device to be quickly put into operation, simple structure, strong function, more practicality.

Description

Technical Field

[0001] This utility model relates to the field of gear pump technology, specifically to a pre-filter mechanism for a gear pump. Background Technology

[0002] Gear pumps are rotary pumps that rely on the change and movement of the working volume formed between the pump cylinder and meshing gears to transport or pressurize liquids. They consist of two gears, a pump body, and front and rear covers forming two enclosed spaces. When the gears rotate, the volume of the space on the disengaged side of the gears increases from small to large, creating a vacuum that draws in the liquid. The volume of the space on the meshing side of the gears decreases from large to small, forcing the liquid into the pipeline. However, gear pumps generally do not have a filter structure at the liquid inlet. When impurities in the liquid enter the gear pump, the gears are easily damaged by the impurities.

[0003] In response, Chinese patent application number CN202120052290.X discloses a gear pump with liquid filtration, comprising a water pump and a filter device. A base is fixedly mounted on the bottom of the water pump, and a filter box is fixedly mounted on the surface of the base. A first pipe and a second pipe are respectively connected to both sides of the filter box. The end of the first pipe furthest from the filter box is connected to the water pump. The filter device includes a motor, the surface of which is fixedly connected to the filter box. The output shaft of the motor rotates through the filter box, and a screw is fixedly connected to the output shaft port. This utility model, by incorporating a filter device, solves the problem that traditional gear pumps generally lack a filtration structure during liquid transport, leading to gear damage from impurities and affecting gear lifespan.

[0004] The gear pump can clean impurities on the first filter screen by setting up a filter device. However, the filter device has a complex structure, which increases the difficulty of assembling the device. Moreover, the cleaned impurities are difficult to discharge from the filter box, making the cleaning of impurities time-consuming and laborious, which affects the user experience of the device.

[0005] Therefore, in order to solve the above problems, a pre-filter mechanism for gear pumps is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a pre-filter mechanism for a gear pump, so as to solve the problem mentioned in the background art that in the prior art, the gear pump can clean the impurities on the first filter screen by setting a filter device, but the structure of the filter device is complex, which increases the difficulty of assembling the device, and the cleaned impurities are difficult to be discharged from the filter box, making the cleaning of impurities time-consuming and laborious, which affects the user experience of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pre-filter mechanism for a gear pump, comprising: a base, a motor mounted on the top surface of the base, and a pump body connected to the output end of the motor;

[0008] A filter structure is installed on the base. The filter structure includes a filter box, which is fixedly installed on the top surface of the base. A slot is formed in the center of the top surface of the filter box. Mounting grooves are formed on both side walls of the slot. Rotation grooves are formed on the side walls of the mounting grooves. Discharge grooves are formed on the left and right side walls of the filter box. A filter screen is installed inside the left end of the filter box. A scraper is rotatably installed on the inner side of the filter box. A sealing plug is fitted inside the discharge groove. A push rod is fixedly connected to the surface of the sealing plug. An installation block is fitted inside the mounting groove. A groove is formed on the surface of the installation block. A column block is movably installed inside the installation block via a bearing. Threaded rods are connected to both ends of the column block. A hand-rotating block is welded to the end of the threaded rod.

[0009] Preferably, the left end of the filter box is connected to the liquid inlet end of the pump body, and the inner wall of the filter screen is flush with the inner wall of the filter box.

[0010] Preferably, the mounting slot is fitted inside the groove, and the bottom surface of the discharge slot is inclined.

[0011] Preferably, the sidewall of the scraper is attached to the filter screen, and the bottom surface of the scraper is attached to the inner bottom wall of the filter box.

[0012] Preferably, the push rod is located inside the filter box, and the end of the push rod abuts against the side wall of the scraper.

[0013] Preferably, the threaded rod is located inside the rotating groove, the threaded rod passes through the sealing plug, and is threadedly connected to the sealing plug.

[0014] Compared with the prior art, the advantages of this utility model are: by setting a threaded rod, this utility model can be inserted into the discharge trough after being removed, so as to push the scraper to swing inside the filter box, which can push and clean the debris on the surface of the filter screen and inside the filter box, so that the debris can be discharged through the discharge trough, which facilitates the quick operation of the device. It has a simple structure, strong functionality, and is more practical.

[0015] This utility model features a filter structure. The mounting block is inserted downwards into the mounting groove, which in turn engages with the recessed groove. At this point, two sets of threaded rods are positioned inside the rotating groove. The sealing plug is then fitted onto the outside of the hand-operated block, and rotating the block causes the threaded rods to rotate within the mounting block. The threaded rods are threadedly connected to the sealing plug, and their rotation inserts the sealing plug into the discharge trough. The sealing plug abuts against the inner wall of the discharge trough, ensuring a seal inside the filter box. Furthermore, the two sets of push rods abut against the left and right walls of the scraper, ensuring stable installation of the scraper inside the filter box. To clean impurities from the filter box, the hand-operated block is rotated in the opposite direction. The hand-operated rotating block drives the threaded rod to rotate inside the rotating groove. The rotation of the threaded rod causes the sealing plug to slide from the inside of the discharge groove, ensuring unobstructed flow inside the discharge groove. At this time, the push rod releases the fixation of the scraper, removes the sealing plug from the hand-operated block, and takes the threaded rod upward from the inside of the rotating groove. Holding the threaded rod, the threaded rod is extended through the discharge groove into the inside of the filter box, which can push the scraper. The scraper then swings inside the filter box, scraping off impurities from the filter screen surface and the inside of the filter box, allowing the impurities to be discharged through the discharge groove and preventing the accumulation of impurities inside the filter box. The structure is simple, easy to assemble, convenient to operate, and more practical. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of the filter structure of this utility model;

[0018] Figure 3 This is a side sectional view of the filter box of this utility model;

[0019] Figure 4 This is an exploded view of the threaded rod structure of this utility model.

[0020] In the diagram: 1. Base; 11. Motor; 12. Pump body; 2. Filter structure; 21. Filter box; 22. Slot; 23. Mounting slot; 24. Rotating slot; 25. Discharge slot; 26. Filter screen; 27. Scraper; 28. Sealing plug; 29. ​​Push rod; 210. Mounting block; 211. Groove; 212. Column block; 213. Threaded rod; 214. Hand-rotating block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides an embodiment of a pre-filter mechanism for a gear pump:

[0023] The base 1, motor 11 and pump body 12 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0024] A pre-filter mechanism for a gear pump includes: a base 1, a motor 11 mounted on the top surface of the base 1, and a pump body 12 connected to the output end of the motor 11.

[0025] A filter structure 2 is installed on the base 1. The filter structure 2 includes a filter box 21, which is fixedly installed on the top surface of the base 1. A slot 22 is provided in the middle of the top surface of the filter box 21. Mounting grooves 23 are provided on the two side walls of the slot 22. A rotating groove 24 is provided on the side wall of the mounting groove 23. Discharge grooves 25 are provided on the left and right side walls of the filter box 21. A filter screen 26 is installed inside the left end of the filter box 21. A scraper 27 is rotatably installed on the inner side of the filter box 21. A sealing plug 28 is secured inside the discharge groove 25. A push rod 29 is fixedly connected to the surface of the sealing plug 28. The inner side of the mounting groove 23... The side is equipped with a mounting block 210, and the surface of the mounting block 210 has a groove 211. A column block 212 is movably mounted on the inner side of the mounting block 210 through a bearing. Threaded rods 213 are connected to both ends of the column block 212. A hand-turning block 214 is welded to the end of the threaded rod 213. After the threaded rod 213 is removed, it is inserted into the discharge chute 25 so as to push the scraper 27 to swing inside the filter box 21. This can push and clean the debris on the surface of the filter screen 26 and inside the filter box 21 so that the debris can be discharged through the discharge chute 25. This facilitates the quick commissioning of the device. The structure is simple, the functionality is strong, and it is more practical.

[0026] Furthermore, the left end of the filter box 21 is connected to the liquid inlet end of the pump body 12, and the inner wall of the filter screen 26 is flush with the inner wall of the filter box 21. The filter screen 26 can filter the liquid entering the pump body 12.

[0027] Furthermore, the mounting groove 23 is inserted into the groove 211, and the bottom surface of the discharge groove 25 is inclined. The mounting groove 23, in conjunction with the groove 211, provides guidance for the installation of the mounting block 210 inside the slot 22.

[0028] Furthermore, the side wall of the scraper 27 is attached to the filter screen 26, and the bottom surface of the scraper 27 is attached to the inner bottom wall of the filter box 21. The movement of the scraper 27 can scrape off impurities on the surface of the filter screen 26 and the inner wall of the filter box 21.

[0029] Furthermore, the push rod 29 is located inside the filter box 21, and the end of the push rod 29 abuts against the side wall of the scraper 27. The two sets of push rods 29 can limit and fix the scraper 27 on both sides.

[0030] Furthermore, the threaded rod 213 is located inside the rotating groove 24, the threaded rod 213 passes through the sealing plug 28 and is threadedly connected to the sealing plug 28, and the rotation of the threaded rod 213 can drive the sealing plug 28 to move within the discharge groove 25.

[0031] Working principle: During installation, the mounting block 210 is inserted downward into the mounting groove 23, and the slot 22 is inserted into the groove 211. At this time, the two sets of threaded rods 213 are located inside the rotating groove 24. The sealing plug 28 is placed on the outside of the hand-rotating block 214, and the hand-rotating block 214 is rotated. The hand-rotating block 214 drives the threaded rods 213 to rotate inside the mounting block 210. The threaded rods 213 are threadedly connected to the sealing plug 28. The rotation of the threaded rods 213 drives the sealing plug 28 to be inserted into the discharge groove 25. The sealing plug 28 abuts against the inner wall of the discharge groove 25, which can keep the inside of the filter box 21 sealed. In addition, the two sets of push rods 29 can abut against the left and right walls of the scraper 27, which can make the installation of the scraper 27 inside the filter box 21 stable.

[0032] When in use, the liquid enters the pump body 12 through the filter structure 2. The filter screen 26 located at the connection between the filter box 21 and the pump body 12 can filter the liquid entering the pump body 12 through the filter box 21, so that the liquid entering the pump body 12 is clean, reducing the wear of impurities on the pump body 12, and the filtered impurities can be collected inside the filter box 21.

[0033] When it is necessary to clean the impurities in the filter box 21, rotate the hand-operated block 214 in the opposite direction. The hand-operated block 214 drives the threaded rod 213 to rotate inside the rotating groove 24. The rotation of the threaded rod 213 can drive the sealing plug 28 to slide from the inside of the discharge groove 25, so that the inside of the discharge groove 25 is unobstructed. At this time, the push rod 29 releases the fixation of the scraper 27, removes the sealing plug 28 from the hand-operated block 214, and takes the threaded rod 213 upward from the inside of the rotating groove 24. Hold the threaded rod 213 and extend it through the discharge groove 25 into the inside of the filter box 21. This can push the scraper 27, which then swings inside the filter box 21, scraping off the impurities on the surface of the filter screen 26 and inside the filter box 21, so that the impurities can be discharged through the discharge groove 25, avoiding the accumulation of impurities inside the filter box 21. The structure is simple, easy to assemble, convenient to operate, and more practical.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A pre-filter mechanism for a gear pump, comprising: A base (1) is provided, and a motor (11) is mounted on the top surface of the base (1). The output end of the motor (11) is connected to a pump body (12). Its features are: A filter structure (2) is installed on the base (1). The filter structure (2) includes a filter box (21). The filter box (21) is fixedly installed on the top surface of the base (1). A slot (22) is provided in the middle of the top surface of the filter box (21). An installation groove (23) is provided on both sides of the slot (22). A rotation groove (24) is provided on the side wall of the installation groove (23). A discharge groove (25) is provided on both the left and right sides of the filter box (21). A filter screen (26) is installed inside the left end of the filter box (21). 1) A scraper (27) is rotatably installed on the inner side of the discharge trough (25). A sealing plug (28) is clamped on the inner side of the discharge trough (25). A push rod (29) is fixedly connected to the surface of the sealing plug (28). An installation block (210) is clamped on the inner side of the installation groove (23). A groove (211) is opened on the surface of the installation block (210). A column block (212) is movably installed on the inner side of the installation block (210) through a bearing. Threaded rods (213) are connected to both ends of the column block (212). A hand-turning block (214) is welded to the end of the threaded rod (213).

2. The pre-filter mechanism for a gear pump according to claim 1, characterized in that: The left end of the filter box (21) is connected to the liquid inlet end of the pump body (12), and the inner wall of the filter screen (26) is flush with the inner wall of the filter box (21).

3. The pre-filter mechanism for a gear pump according to claim 1, characterized in that: The mounting groove (23) is fitted inside the groove (211), and the bottom surface of the discharge groove (25) is inclined.

4. A pre-filter mechanism for a gear pump according to claim 1, characterized in that: The side wall of the scraper (27) is attached to the filter screen (26), and the bottom surface of the scraper (27) is attached to the inner bottom wall of the filter box (21).

5. A pre-filter mechanism for a gear pump according to claim 1, characterized in that: The push rod (29) is located inside the filter box (21), and the end of the push rod (29) abuts against the side wall of the scraper (27).

6. A pre-filter mechanism for a gear pump according to claim 1, characterized in that: The threaded rod (213) is located inside the rotating groove (24), the threaded rod (213) passes through the sealing plug (28) and is threadedly connected to the sealing plug (28).

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