Gear pump
By installing a filter bracket and filter screen on the inlet pipe, the problem of solid impurities in the liquid entering the pump body is solved, ensuring the normal operation and service life of the pump.
Patent Information
- Application Number
- CN202520270316.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing gear pumps are prone to blockage and gear jamming when solid impurities are carried in the liquid, which affects normal operation and service life.
A filter holder and filter screen are installed on the inlet pipe to intercept solid impurities in the liquid, and a dust cap facilitates regular cleaning to ensure the cleanliness of the filter screen.
It effectively prevents solid impurities from entering the pump body, ensuring the normal operation of the pump and extending its service life.
Smart Images
Figure CN223689932U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of water pump technology, and in particular to a gear pump. Background Technology
[0002] Currently, a gear pump is a type of pump that uses the rotation of gears to transport liquids. It belongs to the category of positive displacement pumps. Through the meshing and rotational motion of the gears, the liquid is trapped between the teeth and propelled along the pump casing to the outlet. This type of pump is suitable for a variety of applications, including industry, agriculture, and construction, and is particularly well-suited for transporting high-viscosity liquids.
[0003] The basic working principle of a gear pump is based on the meshing of gears. When the gears rotate, a low-pressure zone is formed on the inlet side of the pump body, drawing in liquid. As the gears rotate, the liquid is carried to the outlet side of the pump body, where it is pressurized due to the reduced space, thus pushing the liquid out of the pump body. Gear pumps can be used to transfer high-viscosity liquids, providing stable flow rates, making them suitable for applications requiring constant flow.
[0004] In related technologies, if solid impurities carried in the liquid are drawn into the pump body along with the liquid, the solid impurities entering the pump body can not only easily cause blockage inside the pump body, but also affect the normal rotation of the gears, and even cause the gears to jam and be damaged. Utility Model Content
[0005] To address the aforementioned issues, this application provides a gear pump that pre-filters the liquid drawn into the pump body, effectively preventing solid impurities carried in the liquid from entering the pump body, ensuring normal operation of the pump body, and extending the service life of the pump body.
[0006] The gear pump provided in this application adopts the following technical solution:
[0007] A gear pump includes a main housing, a motor mounted on the main housing, and a fluid delivery gear set rotatably disposed within the main housing, the fluid delivery gear sets meshing with each other, and the motor driving the fluid delivery gear sets to rotate; an inlet pipe is formed on one side of the main housing, an extension pipe is provided on the inlet pipe, and the extension pipe is interconnected with the inlet pipe; a filter support is detachably installed inside the extension pipe, the filter support is provided with a filter screen for intercepting solid impurities entering the inlet pipe, and a dust cap is threadedly connected to the outside of the extension pipe, the dust cap being used to limit and fix the filter support inside the extension pipe.
[0008] Preferably, the filter support is provided with a limiting plate facing the dust cap, and a first sealing ring is provided between the limiting plate and the dust cap, and the dust cap presses and fixes the first sealing ring on the limiting plate.
[0009] Preferably, a limiting groove is integrally formed on the inner side wall of the extension pipe, the length of the limiting groove extends along the length direction of the extension pipe, and the filter support is inserted into the extension pipe along the length direction of the limiting groove.
[0010] Preferably, a containing cavity is formed in the main shell, and the infusion gear set is rotationally arranged in the containing cavity; the infusion gear set comprises a first gear and a second gear coaxially and fixedly inserted with each other; the infusion gear set further comprises a connecting rod, and the first gear and the second gear are fixedly arranged on the connecting rod in sequence; an auxiliary gear is coaxially arranged on the connecting rod, and the auxiliary gear is in mesh with the motor output shaft.
[0011] Preferably, an insertion block is coaxially arranged on the first gear, and an insertion groove for being fixedly inserted with the insertion block is coaxially arranged on the second gear.
[0012] Preferably, a rotary sealing ring is coaxially sleeved on the connecting rod, and the rotary sealing ring is sealingly arranged in the main shell; a sealing cover is further arranged on the main shell, and the sealing cover is used for limiting and fixing the rotary sealing ring in the main shell.
[0013] Preferably, a bushing is coaxially arranged on the connecting rod, a rotary skeleton is rotationally arranged outside the bushing, and the rotary sealing ring is sealingly sleeved outside the rotary skeleton.
[0014] In summary, the present application has at least one of the following beneficial technical effects:
[0015] The infusion gear set is arranged by stacking the first gear and the second gear, which can further improve the infusion capacity of the main shell.
[0016] When the liquid enters the liquid inlet pipe, the solid impurities carried in the liquid can be intercepted under the action of the filter screen, so as to filter the liquid and ensure the cleanliness of the liquid. By rotating the dustproof cap out of the extension pipe, the filter support can be taken out of the extension pipe, and the solid impurities remaining on one side of the filter screen can be regularly cleaned, so as to ensure the throughput of the liquid and the cleanliness of the filter screen.
[0017] The normal operation of the pump body is ensured, and the service life of the pump body is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;
[0019] Figure 2 is Figure 1 is a schematic diagram of the local structure of the infusion gear set in the containing cavity;
[0020] Figure 3is a partial structure explosion schematic diagram highlighting the filter support inside the extension pipe;
[0021] Figure 4 is a partial structure schematic diagram highlighting the motor and auxiliary gear;
[0022] Figure 5 is a partial structure schematic diagram highlighting the infusion gear set and the motor;
[0023] Figure 6 is a partial structure explosion schematic diagram highlighting the infusion gear set.
[0024] BRIEF DESCRIPTION OF DRAWINGS: 1, main housing; 10, liquid inlet pipe; 100, valve cover; 101, liquid outlet; 102, second sealing ring; 11, extension pipe; 110, limiting groove; 12, containing cavity; 2, motor; 3, infusion gear set; 30, first gear; 300, plug-in block; 31, second gear; 310, plug-in slot; 32, connecting rod; 320, bushing; 321, rotating framework; 33, auxiliary gear; 4, filter support; 40, filter screen; 41, limiting plate; 5, dust cap; 50, first sealing ring; 6, rotating sealing ring; 7, sealing cover. DETAILED DESCRIPTION
[0025] The application will be further described in detail below with reference to the accompanying drawings.
[0026] The application discloses a gear pump.
[0027] Reference Figure 1 , Figure 2 The gear pump comprises a main housing 1, one end of the main housing 1 is detachably installed with a motor 2 through bolts, the other end of the main housing 1 is detachably installed with a valve cover 100 through bolts, the inner side wall of the main housing 1 is provided with a second sealing ring 102 facing the valve cover 100, the valve cover 100 installed on the main housing 1 is pressed against the second sealing ring 102, and the second sealing ring 102 is used for ensuring the waterproof sealing performance of the valve cover 100 and the installation surface of the main housing 1. Two groups of infusion gear sets 3 for conveying liquid are rotationally arranged in the main housing 1, and the two groups of infusion gear sets 3 are engaged with each other. The motor 2 is used for driving the two groups of infusion gear sets 3 to synchronously and reversely rotate.
[0028] As Figure 2 , Figure 3As shown, the side of the main housing 1 is integrally formed with a liquid inlet pipe 10, and the liquid inlet pipe 10 is integrally formed with an extension pipe 11, which is perpendicular to the liquid inlet pipe 10 and communicates with the liquid inlet pipe 10. The main housing 1 is formed with a containing cavity 12, and the infusion gear set 3 is rotatably arranged in the containing cavity 12, and the liquid inlet pipe 10 communicates with the containing cavity 12. The outer side wall of the main housing 1 is also provided with a liquid outlet 101 which communicates with the containing cavity 12. During operation, the two sets of infusion gear sets 3 are driven to rotate synchronously by the motor 2, and with the rotation of the infusion gear sets 3, the liquid is sucked into the containing cavity 12 from the liquid inlet pipe 10, and finally the liquid is discharged from the liquid outlet 101 to the outside of the main housing 1 under the transmission of the infusion gear sets 3.
[0029] As shown in Figure 2 , Figure 3 , the inner side wall of the extension pipe 11 is integrally formed with a limiting groove 110, and the length of the limiting groove 110 extends along the length direction of the extension pipe 11. The filter support 4 is detachably installed in the extension pipe 11 through the limiting groove 110, and the filter support 4 is inserted and limited in the extension pipe 11 along the length direction of the limiting groove 110.
[0030] As shown in Figure 2 , Figure 3 , the filter support 4 is fixedly provided with a filter screen 40 for intercepting solid impurities entering the liquid inlet pipe 10, and the filter screen 40 extends into the liquid inlet pipe 10. The dustproof cap 5 is coaxially screwed on the outer side wall of the end of the extension pipe 11, and the dustproof cap 5 is used to seal the opening of the end of the extension pipe 11 and limit and fix the filter support 4 in the extension pipe 11.
[0031] As shown in Figure 2 , Figure 3 , the filter support 4 is integrally formed with a limiting plate 41 facing the dustproof cap 5, and the first sealing ring 50 is placed between the limiting plate 41 and the dustproof cap 5, and the dustproof cap 5 is used to press and fix the first sealing ring 50 on the limiting plate 41, and the waterproof sealing of the connection between the dustproof cap 5 and the extension pipe 11 is further enhanced by the first sealing ring 50.
[0032] By unscrewing the dustproof cap 5 from the extension pipe 11, the filter support 4 can be taken out of the extension pipe 11 at this time, and the solid impurities remaining on one side of the filter screen 40 are regularly cleaned, so as to ensure the throughput of the liquid and also ensure the cleanliness of the filter screen 40.
[0033] As shown in Figure 4 , Figure 5As shown, the infusion gear set 3 includes two coaxially inserted and fixed first gears 30 and second gears 31, and further includes connecting rods 32, the first gears 30 and the second gears 31 being coaxially and sequentially fixed on the outside of the connecting rods 32. One set of the connecting rods 32 is coaxially fixedly installed with auxiliary gears 33 outside the accommodating cavity 12, and the auxiliary gears 33 are in mesh with the output shaft of the motor 2. When the motor 2 is started, the auxiliary gears 33 will be driven by the output shaft of the motor 2 to rotate synchronously, and finally the connecting rods 32 will drive the two sets of infusion gear sets 3 to rotate reversely synchronously.
[0034] As shown in Figure 5 , Figure 6 , the first gears 30 are coaxially integrally formed with insertion blocks 300, and the second gears 31 are coaxially provided with insertion grooves 310 for being inserted and fixed with the respective opposite insertion blocks 300. The first gears 30 and the second gears 31 are connected and fixed by the mutual insertion and cooperation of the insertion blocks 300 and the insertion grooves 310.
[0035] As shown in Figure 2 , Figure 5 and Figure 6 , the connecting rods 32 are coaxially provided with bushings 320 outside the accommodating cavity 12, the outside of the bushings 320 is coaxially rotatably provided with rotating skeletons 321, and the rotating skeletons 321 are limited in the main shell 1. The outside of the rotating skeletons 321 is coaxially provided with rotating sealing rings 6, and the rotating sealing rings 6 are sealingly arranged in the main shell 1. The main shell 1 is detachably installed with a sealing cover 7 between the rotating sealing rings 6 and the motor 2 through bolts, and the sealing cover 7 is used to limit and fix the rotating sealing rings 6 in the main shell 1.
[0036] The rotating sealing rings 6 can effectively prevent the liquid in the accommodating cavity 12 from seeping out from the bottom of the main shell 1, so as to prevent the motor 2 from being wet, ensure the waterproof sealing of the motor 2, and ensure the safe use of the motor 2.
[0037] The implementation principle is that: when working, the two sets of infusion gear sets 3 are driven to rotate synchronously by the motor 2, with the rotation of the infusion gear sets 3, the liquid is sucked into the accommodating cavity 12 from the liquid inlet pipe 10, and finally the liquid is discharged from the liquid outlet 101 to the outside of the main shell 1 under the transmission of the infusion gear sets 3. The infusion gear sets 3 are arranged by the mutual stacking of the first gears 30 and the second gears 31, which can further improve the infusion capacity of the main shell 1.
[0038] When the liquid enters the liquid inlet pipe 10, the solid impurities carried in the liquid can be intercepted under the action of the filter screen 40, so as to filter the liquid and ensure the cleanliness of the liquid. By rotating the dustproof cap 5 from the extension pipe 11, the filter support 4 can be taken out from the extension pipe 11 at this time, and the solid impurities remaining on one side of the filter screen 40 are regularly cleaned, so as to ensure the passing capacity of the liquid and also ensure the cleanliness of the filter screen 40. Therefore, the normal operation of the pump body is ensured, and the service life of the pump body is prolonged.
[0039] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, and therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A gear pump, comprising a main housing (1), a motor (2) disposed on the main housing (1), and an infusion gear set (3) rotatably disposed within the main housing (1), the infusion gear sets (3) meshing with each other, the motor (2) driving the infusion gear sets (3) to rotate; characterized in that: The main shell (1) is formed with a liquid inlet pipe (10) on one side, the extension pipe (11) is arranged on the liquid inlet pipe (10), and the extension pipe (11) and the liquid inlet pipe (10) are in communication with each other; the filter support (4) is detachably installed in the extension pipe (11), the filter support (4) is provided with a filter screen (40) for intercepting solid impurities entering the liquid inlet pipe (10), and the dustproof cap (5) is threadedly connected outside the extension pipe (11), and the dustproof cap (5) is used for limiting and fixing the filter support (4) in the extension pipe (11).
2. The gear pump of claim 1, wherein: The filter support (4) is provided with a limiting plate (41) facing the dustproof cap (5), a first sealing ring (50) is arranged between the limiting plate (41) and the dustproof cap (5), and the dustproof cap (5) is used for pressing and fixing the first sealing ring (50) on the limiting plate (41).
3. The gear pump of claim 2, wherein: The inner side wall of the extension pipe (11) is integrally formed with a limiting groove (110), the length of the limiting groove (110) extends along the length direction of the extension pipe (11), and the filter support (4) is inserted and limited in the extension pipe (11) along the length extension direction of the limiting groove (110).
4. The gear pump of claim 1, wherein: The main shell (1) is formed with a containing cavity (12), and the infusion gear set (3) is rotatably arranged in the containing cavity (12); the infusion gear set (3) comprises a first gear (30) and a second gear (31) which are coaxially and fixedly inserted with each other; the infusion gear set (3) further comprises a connecting rod (32), and the first gear (30) and the second gear (31) are fixed on the connecting rod (32) in sequence; the connecting rod (32) is coaxially provided with an auxiliary gear (33), and the auxiliary gear (33) is in mesh with the output shaft of the motor (2).
5. The gear pump of claim 4, wherein: The first gear (30) is coaxially provided with an insertion block (300), and the second gear (31) is coaxially provided with an insertion groove (310) for being fixedly inserted with the insertion block (300).
6. The gear pump of claim 4, wherein: The connecting rod (32) is coaxially provided with a rotary sealing ring (6), and the rotary sealing ring (6) is sealingly arranged in the main shell (1); the main shell (1) is further provided with a sealing cover (7), and the sealing cover (7) is used for limiting and fixing the rotary sealing ring (6) in the main shell (1).
7. The gear pump of claim 6, wherein: The connecting rod (32) is coaxially provided with a bushing (320), the bushing (320) is rotatably provided with a rotary skeleton (321) outside, and the rotary sealing ring (6) is sealingly sleeved outside the rotary skeleton (321).