Anti-jamming bidirectional compound gear pump

Abstract

The utility model discloses an anti-jamming bidirectional compound gear pump, which relates to the technical field of bidirectional compound gear pumps and comprises a gear pump body, and a filter screen is arranged, so that when the bidirectional compound gear pump is used daily, the anti-jamming bidirectional compound gear pump is used for improving the filtering effect of liquid input into the pump in a conveying pipe and preventing impurities from being conveyed to the surface of a gear. When a conveying pipe is connected with a gear pump, a sliding block slides along the inner wall of a sliding groove, so that a filter screen is inserted into a connecting pipe, and a first bolt is rotated to drive a positioning rod fixedly connected with a limiting rod to do telescopic motion along the outer wall of a connecting frame through the limiting effect of a first nut; the positioning rod is inserted into the inner wall of the clamping groove, the effect of clamping and fixing the filter screen in the connecting pipe is achieved, the connecting pipe is connected with the two-way compound gear pump through connection of the first flange plate and the second flange plate, and the effect of effectively filtering liquid conveyed to the two-way compound gear pump is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bidirectional compound gear pumps, in particular to an anti-jamming bidirectional compound gear pump. Background Art

[0002] Gear pumps are widely used power components in hydraulic systems. They have compact structure, are easy to use and maintain, and lubrication is automatically achieved by the transported liquid, so no lubricating oil is required during daily work. In general, they have the advantages of simple structure, low price, and strong self-priming ability. However, they have certain requirements for the operating environment, have high requirements for the solid impurity content in the transported liquid, and have low volumetric efficiency.

[0003] For example, announcement number CN214887673U discloses a bidirectional composite gear pump that prevents jamming, comprising: a gear pump housing, a driving wheel, a driven wheel, an electric motor, a cooler and a water pump. The driving wheel is installed inside the gear pump housing, the driven wheel is installed inside the gear housing, the front end face and the rear end face of the driving wheel are installed with a cooler, the rear end face of the driving wheel is installed with a rotating shaft, the rear end face of the rotating shaft is installed with an electric motor, the upper end face and the lower end face of the cooler are installed with a return pipe, the upper end face of the return pipe is installed with a water pump, the left end face and the right end face of the gear housing are provided with pump ports, and the inner side of the cooler is a heat conduction plate. Compared with the prior art, the utility model has the following beneficial effects: by adding a cooler, a water pump and a return pipe, the cooler is close to the gear to absorb the heat generated by the gear, and the heat of the gear is transferred to the cooling layer through the heat conduction layer and the vacuum heat pipe, thereby reducing the temperature of the gear to prevent the gear from expanding and causing jamming, and the pump is stable when in use.

[0004] However, although this anti-stuck bidirectional compound gear pump can achieve a good cooling effect on the gears when in use, it has a low filtering effect on impurities in the liquid when the liquid is transported into the gear pump, so that when the liquid is transported into the gear pump, impurities will be transported to the gear meshing point, causing jamming between the gears, thereby reducing the gear pump's efficiency in transporting liquid.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an anti-jamming bidirectional compound gear pump is proposed. Utility Model Content

[0006] The utility model aims to provide a bidirectional compound gear pump which is anti-stuck, so as to solve the problem of low filtering effect on liquid impurities proposed in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bidirectional compound gear pump that prevents jamming, comprising a gear pump body, the inner wall of the gear pump body being rotatably connected to a connecting gear, the outer wall of the connecting gear being meshed with a driving gear rotatably connected to the inner wall of the gear pump body, the rotation center of the driving gear being fixedly connected to a driving shaft extending to the outer wall of the gear pump body, a delivery pipe being installed on the side wall of the gear pump body, the outer wall of the delivery pipe being detachably connected to a connecting pipe connected to the side wall of the gear pump body, the outer wall of the connecting pipe being fixedly connected to a first flange, and the connecting pipe The inner wall of the filter is detachably connected to the filter screen, the side wall of the filter screen is fixedly connected to a slider slidably connected to the inner wall of the connecting tube, a sliding groove is provided at the connecting portion between the inner wall of the connecting tube and the slider, the outer wall of the connecting tube is fixedly connected to a connecting frame, the outer wall of the connecting frame is provided with a first nut, the inner wall of the first nut is threadedly connected to a first bolt, one end of the first bolt is rotatably connected to a positioning rod slidably connected to the outer wall of the connecting frame, the outer wall of the positioning rod is fixedly connected to a limiting rod slidably connected to the outer wall of the connecting frame, and a slot is provided at the connecting portion between the outer wall of the slider and the positioning rod.

[0008] Furthermore, a second flange is fitted on an outer wall of the first flange, a second nut is provided on an outer wall of the second flange, and a second bolt fitted on an outer wall of the first flange is threadedly connected to an outer wall of the second nut.

[0009] Furthermore, the filter screens are symmetrically arranged at both ends of the connecting pipe.

[0010] Furthermore, two groups of the sliders and the slide grooves are provided, and the positions of the two groups of the sliders and the slide grooves are distributed symmetrically with respect to the central axis of the connecting pipe.

[0011] Furthermore, the connecting frame is symmetrically arranged on both sides of the connecting pipe, and the outer wall profile of the positioning rod is in a "U" shape.

[0012] Furthermore, the slider is slidably connected to the positioning rod, and the inner wall contour of the slot is larger than the outer wall contour of the positioning rod.

[0013] Furthermore, a sealing ring is provided at the connection portion between the first flange and the second flange.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides a filter screen. When the bidirectional compound gear pump is used daily, in order to improve the filtering effect of the liquid in the delivery pipe input into the pump and prevent impurities from being delivered to the surface of the gear and causing the gear meshing to get stuck, when the delivery pipe is connected to the gear pump, the slider can be first slid along the inner wall of the slide groove to insert the filter screen into the connecting pipe, and the first bolt is rotated to drive the positioning rod fixedly connected to the limiting rod to perform telescopic movement along the outer wall of the connecting frame through the limiting effect of the first nut, so that the positioning rod is inserted into the inner wall of the slot, which plays a role in clamping and fixing the filter screen in the connecting pipe, and the connecting pipe is connected to the bidirectional compound gear pump through the connection of the first flange and the second flange, so as to achieve the effect of effectively filtering the liquid delivered to the bidirectional compound gear pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a bidirectional compound gear pump;

[0017] Figure 2 It is a schematic diagram of the internal cross-sectional structure of a bidirectional compound gear pump;

[0018] Figure 3 It is a schematic diagram of the connection structure between the positioning rod and the limiting rod;

[0019] Figure 4 It is a schematic diagram of the connection structure between the positioning rod and the slot.

[0020] In the figure: 1. gear pump body; 2. drive shaft; 3. drive gear; 4. connecting gear; 5. delivery pipe; 6. connecting pipe; 7. first flange; 8. filter; 9. slider; 10. slide groove; 11. connecting frame; 12. first nut; 13. first bolt; 14. positioning rod; 15. limit rod; 16. slot; 17. second flange; 18. second nut; 19. second bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1: Figure 1-Figure 3As shown, a bidirectional compound gear pump with anti-stuckness includes a gear pump body 1, the inner wall of the gear pump body 1 is rotatably connected with a connecting gear 4, the outer wall of the connecting gear 4 is meshed with a driving gear 3 rotatably connected to the inner wall of the gear pump body 1, the rotation center of the driving gear 3 is fixedly connected with a driving shaft 2 extending to the outer wall of the gear pump body 1, the side wall of the gear pump body 1 is installed with a delivery pipe 5, the outer wall of the delivery pipe 5 is detachably connected with a connecting pipe 6 connected to the side wall of the gear pump body 1, the outer wall of the connecting pipe 6 is fixedly connected with a first flange 7, the inner wall of the connecting pipe 6 is detachably connected with a filter screen 8, and the side of the filter screen 8 is fixedly connected with a first flange 7. The wall is fixedly connected with a slider 9 which is slidably connected to the inner wall of the connecting tube 6, a sliding groove 10 is provided at the connection position between the inner wall of the connecting tube 6 and the slider 9, the outer wall of the connecting tube 6 is fixedly connected with a connecting frame 11, the outer wall of the connecting frame 11 is provided with a first nut 12, the inner wall of the first nut 12 is threadedly connected with a first bolt 13, one end of the first bolt 13 is rotatably connected with a positioning rod 14 which is slidably connected to the outer wall of the connecting frame 11, the outer wall of the positioning rod 14 is fixedly connected with a limiting rod 15 which is slidably connected to the outer wall of the connecting frame 11, and a slot 16 is provided at the connection position between the outer wall of the slider 9 and the positioning rod 14.

[0023] Furthermore, the filter screens 8 are symmetrically arranged at both ends of the connecting tube 6 , which is beneficial for performing multiple filtering on the input liquid.

[0024] Furthermore, two groups of sliders 9 and slide grooves 10 are provided, and the position distribution of the two groups of sliders 9 and slide grooves 10 is symmetrical about the central axis of the connecting pipe 6. The filter screen 8 slides with the connecting pipe 6 through the sliders 9 and the slide grooves 10. The sliders 9 slide along the inner wall of the slide grooves 10, driving the filter screen 8 to slide along the inner wall of the connecting pipe 6, thereby playing a role in pre-positioning and installing the filter screen 8.

[0025] Furthermore, the connecting frame 11 is symmetrically arranged on both sides of the connecting pipe 6, and the outer wall profile of the positioning rod 14 is in a "U" shape. The positioning rod 14 forms a telescopic structure with the connecting frame 11 through the first bolt 13 and the limiting rod 15, which is beneficial to the rotation of the first bolt 13. Through the connection of the limiting rod 15, the positioning rod 14 is driven to perform telescopic movement along the outer wall of the connecting frame 11, thereby effectively engaging the slider 9.

[0026] Furthermore, the slider 9 and the positioning rod 14 are slidably connected, and the inner wall contour of the slot 16 is larger than the outer wall contour of the positioning rod 14, which is conducive to the sliding connection between the slider 9 and the positioning rod 14 to reduce the effect of impurities getting stuck on the gear.

[0027] Embodiment 2: Figure 1 , Figure 2 and Figure 4As shown, the utility model proposes an anti-stuck bidirectional compound gear pump. Compared with the first embodiment, as another embodiment of the utility model, the outer wall of the first flange 7 is fitted with a second flange 17, and the outer wall of the second flange 17 is provided with a second nut 18. The outer wall of the second nut 18 is threadedly connected with a second bolt 19 that fits the outer wall of the first flange 7. When working, by setting the filter screen 8, it is beneficial to improve the filtering effect of the liquid input into the pump in the delivery pipe 5 during daily use of the bidirectional compound gear pump, and prevent impurities from being delivered to the surface of the gear, causing the gear meshing to get stuck. When the delivery pipe 5 is connected to the gear pump, the slider 9 can be slid along the inner wall of the slide groove 10 first, so that the filter screen 8 is inserted into the connecting pipe 6, and the first bolt 13 is rotated through the limiting effect of the first nut 12 to drive the positioning rod 14 fixedly connected to the limiting rod 15 to perform telescopic movement along the outer wall of the connecting frame 11, so that the positioning rod 14 is inserted into the inner wall of the card groove 16, which plays a role in clamping and fixing the filter screen 8 in the connecting pipe 6, and the connecting pipe 6 is connected to the bidirectional compound gear pump through the connection of the first flange 7 and the second flange 17, so as to achieve the effect of effectively filtering the liquid delivered to the bidirectional compound gear pump.

[0028] Furthermore, a sealing ring is provided at the connection position between the first flange 7 and the second flange 17, which is beneficial for effectively sealing the conveyed liquid.

[0029] Working principle: When using this anti-stuck bidirectional compound gear pump, when the bidirectional compound gear pump is used daily, in order to improve the filtering effect of the liquid input into the pump in the delivery pipe 5 and prevent impurities from being delivered to the surface of the gear and causing the gear meshing to get stuck, when the delivery pipe 5 is connected to the gear pump, the slider 9 can be first slid along the inner wall of the slide groove 10 to insert the filter screen 8 into the connecting pipe 6, and the first bolt 13 is rotated through the limiting effect of the first nut 12 to drive the positioning rod 14 fixedly connected to the limiting rod 15 to perform telescopic movement along the outer wall of the connecting frame 11, so that the positioning rod 14 is inserted into the inner wall of the slot 16, which plays a role in fixing the filter screen 8 in the connecting pipe 6, and through the connection of the first flange 7 and the second flange 17, the connecting pipe 6 is connected to the bidirectional compound gear pump to achieve the effect of effectively filtering the liquid delivered to the bidirectional compound gear pump.

[0030] This is the working principle of this anti-seizure bidirectional compound gear pump.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A bidirectional compound gear pump with an anti-seizure function, comprising a gear pump body (1), characterized in that: The inner wall of the gear pump body (1) is rotatably connected to a connecting gear (4); the outer wall of the connecting gear (4) is meshed with a driving gear (3) rotatably connected to the inner wall of the gear pump body (1); the rotation center of the driving gear (3) is fixedly connected to a driving shaft (2) extending to the outer wall of the gear pump body (1); a delivery pipe (5) is installed on the side wall of the gear pump body (1); the outer wall of the delivery pipe (5) is detachably connected to a connecting pipe (6) connected to the side wall of the gear pump body (1); the outer wall of the connecting pipe (6) is fixedly connected to a first flange (7); the inner wall of the connecting pipe (6) is detachably connected to a filter screen (8); the side wall of the filter screen (8) is fixedly connected to the inner wall of the connecting pipe (6); A sliding block (9) is slidably connected to the wall of the connecting tube (6); a sliding groove (10) is provided at the connection position between the inner wall of the connecting tube (6) and the sliding block (9); the outer wall of the connecting tube (6) is fixedly connected to a connecting frame (11); the outer wall of the connecting frame (11) is provided with a first nut (12); the inner wall of the first nut (12) is threadedly connected to a first bolt (13); one end of the first bolt (13) is rotatably connected to a positioning rod (14) slidably connected to the outer wall of the connecting frame (11); the outer wall of the positioning rod (14) is fixedly connected to a limiting rod (15) slidably connected to the outer wall of the connecting frame (11); and a clamping groove (16) is provided at the connection position between the outer wall of the sliding block (9) and the positioning rod (14).

2. The anti-stuck bidirectional compound gear pump according to claim 1, characterized in that: The outer wall of the first flange (7) is fitted with a second flange (17), the outer wall of the second flange (17) is provided with a second nut (18), and the outer wall of the second nut (18) is threadedly connected with a second bolt (19) fitted with the outer wall of the first flange (7).

3. The anti-stuck bidirectional compound gear pump according to claim 1, characterized in that: The filter screens (8) are symmetrically arranged at both ends of the connecting pipe (6).

4. The anti-seizure bidirectional compound gear pump according to claim 1, characterized in that: The sliders (9) and the slide grooves (10) are provided in two groups, and the positions of the two groups of sliders (9) and the slide grooves (10) are distributed symmetrically with respect to the central axis of the connecting pipe (6).

5. The anti-seizure bidirectional compound gear pump according to claim 1, characterized in that: The connecting frame (11) is symmetrically arranged on both sides of the connecting pipe (6), and the outer wall profile of the positioning rod (14) is in a "U" shape.

6. The anti-seizure bidirectional compound gear pump according to claim 1, characterized in that: The slider (9) is slidably connected to the positioning rod (14), and the inner wall profile of the clamping groove (16) is larger than the outer wall profile of the positioning rod (14).

7. The anti-seizure bidirectional compound gear pump according to claim 2, characterized in that: A sealing ring is provided at the connection portion between the first flange (7) and the second flange (17).

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