A direct drive type high-pressure constant flow pump device
By introducing filter cartridges and cleaning components into the high-pressure constant flow pump, the problems of wear and clogging of pump components by impurities are solved, achieving effective impurity filtration and cleaning, and extending the service life of the pump.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TONGJI ANALYTICAL INSTR CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-05
AI Technical Summary
Impurities in the fluid can cause wear or blockage to the precision components of a high-pressure constant flow pump, affecting the pump's performance and lifespan.
A direct-drive high-pressure constant flow pump device was designed, comprising a filter cartridge and a cleaning component. The filter cartridge is used to filter impurities, and the cleaning component cleans the inner wall of the filter cartridge through a brush driven by a servo motor to prevent clogging and facilitate the replacement of the filter cartridge and the installation and removal of the cover plate.
It effectively removes impurities from fluids, protects pump components, prevents wear and clogging, improves cleaning quality, and extends pump service life.
Smart Images

Figure CN224326420U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of constant flow pump technology, specifically to a direct-drive high-pressure constant flow pump device. Background Technology
[0002] A direct-drive high-pressure constant-flow pump refers to a high-pressure constant-flow pump that uses direct-drive technology (i.e., the motor directly drives the pump body without intermediate transmission devices). This type of pump achieves high-pressure, constant-flow output of fluids by precisely controlling the motor speed and the pump body's operating state. High-pressure constant-flow pumps have wide applications in various industries. In the chemical industry, they can meet the needs for precise metering and transportation of liquids. In the water treatment field, they can be used for water supply in high-pressure reverse osmosis and ultrafiltration systems. In the food and beverage industry, they can be used for raw material transportation and proportioning. In the pharmaceutical industry, they can be used for drug preparation and transportation.
[0003] However, when a high-pressure constant flow pump is transporting fluid, if the fluid contains impurities or particles, these impurities may cause wear or blockage to the precision components inside the pump body (such as plungers, seals, etc.), thereby affecting the pump's performance and lifespan.
[0004] Therefore, a direct-drive high-pressure constant flow pump device is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a direct-drive high-pressure constant flow pump device to solve the problem that impurities can cause wear or blockage to the precision components inside the pump body.
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] A direct-drive high-pressure constant flow pump device includes a high-pressure constant flow pump. An air inlet pipe is fixedly connected to the bottom output end of the high-pressure constant flow pump. A fixed pipe is fixedly connected inside the air inlet pipe. A filter cartridge is movably connected to the center inside the fixed pipe. Fixed cylinders are fixedly connected to the left and right ends of the filter cartridge. Cover plates are provided on the left and right sides of the fixed pipe. A cleaning component is provided at the bottom of the high-pressure constant flow pump. A fixed component is also provided at the bottom of the high-pressure constant flow pump.
[0008] Furthermore, the cleaning assembly includes a servo motor fixedly connected to the cover plate, a rotating shaft fixedly connected to the output end of the servo motor, a cylinder with an eccentric shaft fixedly connected to the output end of the rotating shaft, a semi-circular rack on the inner side wall of the cylinder, a partition plate inside the left side of the fixed tube, the right side of the cylinder movably connected to the inside of the partition plate, a fixed rod fixedly connected to the lower right end of the partition plate, a gear fixedly connected to the output end of the fixed rod, a brush fixedly connected to the right side of the gear, a connecting rod fixedly connected to the center of the right side of the cylinder, a rotating wheel fixedly connected to the output end of the connecting rod, and a half-tooth on the side wall of the rotating wheel.
[0009] Furthermore, the rack is located above the teeth on the side wall of the rotating wheel.
[0010] Furthermore, a first hydraulic rod is fixedly connected to the front and rear ends of the cover plate, and a compression spring is provided at the output end of the first hydraulic rod.
[0011] Furthermore, the fixing component includes limiting holes opened at the upper and lower ends of the cover plate, fixing seats are fixedly connected to the upper and lower sides of the left and right ends of the fixing tube, a movable plate is movably connected to the output end of the fixing seat, a screw is threadedly connected to the internal thread of the movable plate, and a nut is threadedly connected to the output end of the screw.
[0012] Furthermore, the shape and volume of the screw are located inside the limiting hole.
[0013] The beneficial effects of this utility model are as follows:
[0014] This invention delivers fluid to the inside of a high-pressure constant flow pump via an air inlet pipe. The high-pressure constant flow pump controls the flow rate of the fluid as it is discharged. This fluid may contain various impurities, such as particulate matter and suspended solids. If these impurities directly enter the high-pressure constant flow pump, they may cause wear to the impeller, bearings, and other components, or even block the flow channels, affecting the normal operation of the pump. Filtering with a filter cartridge effectively removes these impurities, protecting the pump body from damage. A cleaning component cleans the inside of the filter cartridge, preventing blockage and ensuring proper fluid filtration. When the cover plate is removed from the inside of the fixing tube, the cover plate, via a first hydraulic rod, detaches the fixing tube and filter cartridge from the fixing tube, facilitating filter cartridge replacement. The fixing component enables convenient installation and removal of the cover plate.
[0015] This invention, through the setting of the cleaning components, activates an external controller, and a servo motor drives a rotating shaft to rotate via its output end. The rotating shaft drives a cylinder to rotate, and during the rotation of the cylinder, a rack rotates along with it, driving a gear to rotate 90 degrees in the forward direction. The gear drives the brush to rotate in the forward direction. When the cylinder drives the rack to rotate above the gear, the cylinder drives a rotating wheel to rotate via a connecting rod. During the rotation of the rotating wheel, the gear rotates 90 degrees in the reverse direction, and the gear drives the brush to rotate in the reverse direction. This achieves forward and reverse rotation of the brush, increasing the contact frequency and angle between the bristles and the inner wall of the filter cartridge, reducing the residue of impurities on the filter cartridge wall, improving the cleaning quality of the brush, and more thoroughly removing stains and particles. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the inside of the air intake pipe of this utility model;
[0018] Figure 3 This is a schematic diagram of the cleaning component of this utility model;
[0019] Figure 4 This is a schematic diagram of the fixing component of this utility model;
[0020] Reference numerals: 1. High-pressure constant flow pump; 2. Inlet pipe; 201. Fixed pipe; 202. Filter cartridge; 203. Fixed cylinder; 3. Cover plate; 301. First hydraulic rod; 302. Compression spring; 4. Cleaning assembly; 401. Servo motor; 402. Rotating shaft; 403. Cylinder; 404. Rack; 405. Fixed rod; 406. Gear; 407. Brush; 408. Connecting rod; 409. Rotating wheel; 5. Fixed assembly; 501. Limiting hole; 502. Fixed base; 503. Movable plate; 504. Screw; 505. Nut. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] like Figures 1 to 4As shown, a direct-drive high-pressure constant flow pump device includes a high-pressure constant flow pump 1, which is the main body. An air inlet pipe 2 is fixedly connected to the bottom output end of the high-pressure constant flow pump 1. The air inlet pipe 2 and the interior of the high-pressure constant flow pump 1 are interconnected. A horizontal fixed pipe 201 is fixedly connected inside the air inlet pipe 2. The fixed pipe 201 and the interior of the air inlet pipe 2 are interconnected. A filter cartridge 202 is movably connected to the center of the interior of the fixed pipe 201. Fixed cylinders 203 are fixedly connected to the left and right ends of the filter cartridge 202. Cover plates 3 are provided on the left and right sides of the fixed pipe 201. A first hydraulic rod 301 is fixedly connected to the front and rear ends of the left cover plate 3. The output end of the first hydraulic rod 301 is fixedly connected to the wall of the fixed cylinder 203. A compression spring 302 is provided at the output end of the first hydraulic rod 301. A cleaning component 4 for cleaning the fixed cylinder 203 is provided at the bottom of the high-pressure constant flow pump 1. A fixing component 5 for fixing the cover plate 3 is provided at the bottom of the high-pressure constant flow pump 1.
[0026] It should be noted that the high-pressure constant flow pump 1 is supplied with fluid through the air inlet pipe 2. The high-pressure constant flow pump 1 controls the flow rate of the fluid and discharges it outward. The fluid may contain various impurities, such as particulate matter and suspended matter. If these impurities directly enter the high-pressure constant flow pump 1, they may cause wear to the impeller, bearings and other components of the high-pressure constant flow pump 1, or even block the flow channel of the high-pressure constant flow pump 1, affecting the normal operation of the high-pressure constant flow pump 1. The filter cartridge 202 can effectively remove these impurities and protect the pump body from damage. The cleaning component 4 cleans the inside of the filter cartridge 202 to prevent the filter cartridge 202 from being unable to filter the fluid due to impurities. When the cover plate 3 is removed from the inside of the fixing pipe 201, the cover plate 3 drives the fixing cylinder 203 and the filter cartridge 202 to detach from the inside of the fixing pipe 201 through the first hydraulic rod 301, so as to facilitate the replacement of the filter cartridge 202. The fixing component 5 makes it easy to install and remove the cover plate 3.
[0027] The cleaning component 4 includes a servo motor 401 fixedly connected to the left cover plate 3. The output end of the servo motor 401 is fixedly connected to a rotating shaft 402. The output end of the rotating shaft 402 is fixedly connected to a cylinder 403 with an eccentric shaft. The inner side wall of the cylinder 403 is provided with a semi-circular rack 404. A partition is provided inside the left side of the fixed tube 201. The right side of the cylinder 403 is movably connected to the partition. A fixing rod 405 is fixedly connected to the lower right end of the partition. A gear 406 is fixedly connected to the output end of the fixing rod 405. The gear 406 and the rack 404 mesh with each other. A brush 407 is fixedly connected to the right side of the gear 406. The brush 407 is located inside the filter cartridge 202. A connecting rod 408 is fixedly connected to the center of the right side of the cylinder 403. A rotating wheel 409 is fixedly connected to the output end of the connecting rod 408. The side wall of the rotating wheel 409 is provided with a half-tooth. The rotating wheel 409 and the gear 406 mesh with each other.
[0028] It should be noted that when the external controller is started, the servo motor 401 drives the rotating shaft 402 to rotate through the output end. The rotating shaft 402 drives the cylinder 403 to rotate. During the rotation of the cylinder 403, the rack 404 rotates with it and drives the gear 406 to rotate 90 degrees in the forward direction. The gear 406 drives the brush 407 to rotate in the forward direction. When the cylinder 403 drives the rack 404 to rotate above the gear 406, the cylinder 403 drives the rotating wheel 409 to rotate through the connecting rod 408. During the rotation of the rotating wheel 409, the gear 406 rotates 90 degrees in the reverse direction. The gear 406 then drives the brush 407 to rotate in the reverse direction. This achieves the forward and reverse rotation of the brush 407, increasing the contact frequency and angle between the bristles and the inner wall of the filter cartridge 202. It can also reduce the residue of impurities on the wall of the filter cartridge 202, improve the cleaning quality of the brush 407, and more thoroughly remove stains and particles.
[0029] The fixing component 5 includes limiting holes 501 at the upper and lower ends of the cover plate 3. The upper and lower sides of the left and right ends of the fixing tube 201 are fixedly connected to the fixing seats 502. The output end of the fixing seat 502 is movably connected to the movable plate 503. The movable plate 503 has a threaded hole inside and a screw 504 is threaded inside. The screw 504 is threaded to a nut 505 at one end that is far apart from each other.
[0030] It should be noted that by rotating the screw 504 inside the movable plate 503, its output end is positioned inside the limiting hole 501. Then, the nut 505 is threaded onto the movable plate 503, fixing the cover plate 3 to the left and right ends of the fixed tube 201 to prevent fluid leakage inside the fixed tube 201. When it is necessary to clean the inside of the fixed tube 201, the nut 505 is rotated in the opposite direction to disengage from the wall of the screw 504, and the screw 504 is rotated in the opposite direction to disengage from the inside of the limiting hole 501. This allows for convenient installation and removal of the cover plate 3 at the left and right ends of the fixed tube 201.
[0031] In summary: Fluid is supplied to the inside of the high-pressure constant flow pump 1 through the air inlet pipe 2. The high-pressure constant flow pump 1 controls the flow rate of the fluid and discharges it outward. The fluid may contain various impurities, such as particulate matter and suspended matter. If these impurities directly enter the inside of the high-pressure constant flow pump 1, they may cause wear to the impeller, bearings and other components of the high-pressure constant flow pump 1, or even block the flow channel of the high-pressure constant flow pump 1, affecting the normal operation of the high-pressure constant flow pump 1. The filter cartridge 202 can effectively remove these impurities and protect the pump body from damage. The cleaning component 4 cleans the inside of the filter cartridge 202 to prevent the filter cartridge 202 from being unable to filter the fluid due to impurities. When the cover plate 3 is removed from the inside of the fixing pipe 201, the cover plate 3 drives the fixing cylinder 203 and the filter cartridge 202 to detach from the inside of the fixing pipe 201 through the first hydraulic rod 301, so as to facilitate the replacement of the filter cartridge 202. The fixing component 5 makes it easy to install and remove the cover plate 3.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A direct-drive high-pressure constant-flow pump device, characterized in that, It includes a high-pressure constant flow pump (1), an air inlet pipe (2) is fixedly connected to the bottom output end of the high-pressure constant flow pump (1), a fixed pipe (201) is fixedly connected inside the air inlet pipe (2), a filter cartridge (202) is movably connected to the center inside the fixed pipe (201), a fixed cylinder (203) is fixedly connected to the left and right ends of the filter cartridge (202), a cover plate (3) is provided on the left and right sides of the fixed pipe (201), a cleaning component (4) is provided at the bottom of the high-pressure constant flow pump (1), and a fixed component (5) is provided at the bottom of the high-pressure constant flow pump (1).
2. The direct-drive high-pressure constant flow pump device according to claim 1, characterized in that, The cleaning component (4) includes a servo motor (401) fixedly connected to the cover plate (3), a rotating shaft (402) fixedly connected to the output end of the servo motor (401), a cylinder (403) with an eccentric shaft fixedly connected to the output end of the rotating shaft (402), a semi-circular rack (404) provided on the side wall inside the cylinder (403), a partition provided on the left side of the fixed tube (201), the right side of the cylinder (403) being movably connected inside the partition, a fixed rod (405) fixedly connected to the lower right end of the partition, a gear (406) fixedly connected to the output end of the fixed rod (405), a brush (407) fixedly connected to the right side of the gear (406), a connecting rod (408) fixedly connected to the center of the right side of the cylinder (403), a rotating wheel (409) fixedly connected to the output end of the connecting rod (408), and a half-tooth provided on the side wall of the rotating wheel (409).
3. The direct-drive high-pressure constant flow pump device according to claim 2, characterized in that, The rack (404) is located above the teeth on the side wall of the rotating wheel (409).
4. The direct-drive high-pressure constant flow pump device according to claim 1, characterized in that, The front and rear ends of the cover plate (3) are fixedly connected to a first hydraulic rod (301), and a compression spring (302) is provided at the output end of the first hydraulic rod (301).
5. The direct-drive high-pressure constant flow pump device according to claim 1, characterized in that, The fixing component (5) includes limiting holes (501) opened at the upper and lower ends of the cover plate (3), and fixing seats (502) are fixedly connected to the upper and lower sides of the left and right ends of the fixing tube (201). The output end of the fixing seat (502) is movably connected to the movable plate (503), and the internal thread of the movable plate (503) is connected to the screw (504). The output end of the screw (504) is threadedly connected to the nut (505).
6. The direct-drive high-pressure constant flow pump device according to claim 5, characterized in that, The screw (504) is located inside the limiting hole (501).