Liquid inlet assembly of hydraulic gear pump

Abstract

The utility model discloses a liquid inlet assembly of a hydraulic gear pump, which belongs to the technical field of hydraulic equipment and comprises a pump body with a pump cavity, a liquid inlet hole is formed in the center of the top of the pump cavity, a liquid inlet pipe is arranged in the liquid inlet hole, a partition plate is arranged in the liquid inlet hole, and a liquid outlet pipe is arranged in the partition plate. A bearing assembly is arranged at the bottom of the partition plate, and a filtering assembly is arranged at the bottom of the bearing assembly. The bearing assembly comprises a first buffering piece arranged in the center of the bottom of the partition plate and a second buffering piece arranged on the outer side of the first buffering piece. The filter assembly comprises a storage unit arranged at the bottom of the liquid inlet pipe and a filter screen arranged in the middle of the storage unit, and the filter screen is of a conical structure. Through the arrangement of the bearing assembly, the partition plate is prevented from deviating after being impacted, so that the first compensation piece or the second compensation piece is prevented from being damaged by acting force, and through the arrangement of the filtering assembly, impurities are prevented from being accumulated on the surface of the filter screen, and the filtering effect is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, in particular to a hydraulic gear pump liquid inlet component. Background Art

[0002] A hydraulic gear pump is a hydraulic component that provides pressurized fluid for hydraulic transmissions. During operation, hydraulic oil circulates in and out of the gear pump. To prevent impurities in the hydraulic oil from damaging the gear pump, a filter is typically installed at the pump's inlet.

[0003] Patent publication number: CN221120303U discloses a hydraulic gear pump liquid inlet assembly, which belongs to the field of hydraulic equipment. It solves the problem of loose structure of existing gear pumps. In this utility model, the gear pump includes a pump body with a pump chamber, and a liquid inlet hole connected to the pump chamber is vertically provided on the top of the pump body. The liquid inlet assembly includes a partition and a filter screen horizontally arranged in the liquid inlet hole from top to bottom. The filter screen is fixed in the liquid inlet hole, and a seal is formed between the edge of the filter screen and the inner wall of the liquid inlet hole; a spring is vertically provided between the partition and the filter screen, and the two ends of the spring act on the filter screen and the partition respectively. Under the action of the spring, the partition has a tendency to move upward to press on the inner wall of the liquid inlet hole, thereby cutting off the liquid inlet hole. The above-mentioned hydraulic gear pump liquid inlet assembly has a compact structure.

[0004] However, in actual use of the above scheme, the bottom of the partition is supported only by a spring. When the liquid inlet flow is too large, the spring deformation exceeds the limit and is easily damaged. In addition, the filter screen in the above scheme is arranged in a pocket shape. During use, impurities are easily accumulated in the center of the bottom of the filter screen, affecting the filtering effect. Therefore, it is urgent to provide a hydraulic gear pump liquid inlet component to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art in that, during actual use, the bottom of the partition is supported only by a spring. When the liquid inlet flow is too large, the spring deformation exceeds the limit and is easily damaged. In addition, in the above-mentioned scheme, the filter screen is arranged in a pocket shape. During use, impurities are easily accumulated at the bottom center of the filter screen, affecting the filtering effect. A hydraulic gear pump liquid inlet component is provided.

[0006] In order to solve the above technical problems, the present invention adopts a technical solution as follows: providing a hydraulic gear pump liquid inlet assembly, comprising a pump body having a pump chamber, a liquid inlet hole being opened at the top center of the pump chamber, a liquid inlet pipe being arranged inside the liquid inlet hole, a partition being arranged inside the liquid inlet hole, a supporting assembly being arranged at the bottom of the partition, and a filter assembly being arranged at the bottom of the supporting assembly;

[0007] The supporting assembly includes a first buffer member arranged at the center of the bottom of the partition and a second buffer member arranged outside the first buffer member;

[0008] The filter assembly includes a receiving unit arranged at the bottom of the liquid inlet pipe and a filter screen arranged in the middle of the receiving unit, and the filter screen is in a conical structure.

[0009] The utility model is further configured as follows: a liquid outlet hole is opened at the bottom of the pump body, the liquid outlet hole and the liquid inlet hole are coaxially arranged, and a liquid outlet pipe is installed inside the liquid outlet hole.

[0010] The utility model is further configured as follows: the liquid inlet pipe is threadedly connected to the inner wall of the liquid inlet hole, a mounting plate is integrally formed on the outer surface of the liquid inlet pipe, and bolts are provided between the mounting plate and the outer shell of the pump body.

[0011] The utility model is further configured as follows: a circular plate is integrally formed on the inner wall of the liquid inlet pipe, the circular plate is located below the partition, a through hole is opened on the top surface of the circular plate, there are multiple through holes, and a perforation is provided between two adjacent through holes.

[0012] The utility model is further configured as follows: the first buffer member includes a telescopic member installed between the partition and the circular plate, and a first compensation member arranged outside the telescopic member.

[0013] The utility model is further configured as follows: the number of the second buffer members is multiple, and the multiple groups of the second buffer members are distributed in a circular array with the center point of the circular plate as the center;

[0014] The second buffer member includes a vertical rod movably arranged inside the through hole and a second compensation member arranged outside the vertical rod. A limit block is installed at the bottom of the vertical rod, and the second compensation member is arranged between the limit block and the circular plate.

[0015] The present invention is further configured as follows: the storage unit comprises a mounting seat arranged at the bottom of the liquid inlet pipe, and a storage cavity arranged on the inner wall of the mounting seat, and the longitudinal section of the storage cavity is an "L"-shaped structure.

[0016] The utility model is further configured as follows: a mounting hole is opened at the center of the bottom of the mounting seat, and the filter is installed inside the mounting hole through a locking bolt.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. The present invention utilizes a support assembly that cooperates with the telescopic member and the first compensating member to support the middle portion of the partition, and further cooperates with multiple vertical rods and the second compensating member disposed outside the vertical rods to support the circumference of the partition. This improves support strength, prevents the partition from deflecting after an impact, and thus prevents damage to the first or second compensating member due to the applied force.

[0019] 2. The utility model is provided with a filter assembly. When the liquid is filtered through the filter, the impurities in the liquid are intercepted on the surface of the filter, so that the impurities move along the surface slope of the filter and enter the interior of the storage cavity. After the impurities enter the interior of the storage cavity, they will not flow back to the surface of the filter, thereby preventing impurities from accumulating on the surface of the filter and affecting the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0021] Figure 2 It is a cross-sectional three-dimensional structural diagram of the utility model;

[0022] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle part;

[0023] Figure 4 For this utility model Figure 2 A partial enlarged view of point B in the middle.

[0024] In the figure: 1. Pump chamber; 2. Pump body; 21. Liquid outlet; 22. Liquid outlet pipe; 3. Liquid inlet; 4. Liquid inlet pipe; 41. Mounting plate; 42. Circular plate; 43. Through hole; 44. Perforation; 5. Partition; 6. Support assembly; 61. First buffer member; 611. Telescopic member; 612. First compensation member; 62. Second buffer member; 621. Vertical rod; 622. Second compensation member; 7. Filter assembly; 71. Storage unit; 711. Mounting seat; 712. Storage chamber; 72. Filter screen. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0026] Example 1, please refer to Figure 1-Figure 3 A hydraulic gear pump liquid inlet assembly includes a pump body 2 with a pump chamber 1, a liquid inlet hole 3 is opened at the top center of the pump chamber 1, a liquid inlet pipe 4 is arranged inside the liquid inlet hole 3, a partition 5 is arranged inside the liquid inlet hole 3, a supporting assembly 6 is arranged at the bottom of the partition 5, and a filter assembly 7 is arranged at the bottom of the supporting assembly 6. The partition 5 is used to block the liquid inlet of the liquid inlet pipe 4, and the supporting assembly 6 is used to support the partition 5 so that it fits with the inner wall of the liquid inlet pipe 4. The filter assembly 7 is used to filter the liquid entering the liquid inlet pipe 4 and improve the impact strength of the filter assembly 7;

[0027] The supporting assembly 6 includes a first buffer member 61 disposed at the center of the bottom of the partition 5 and a second buffer member 62 disposed outside the first buffer member 61;

[0028] The filter assembly 7 includes a receiving unit 71 disposed at the bottom of the liquid inlet pipe 4 and a filter screen 72 disposed in the middle of the receiving unit 71 . The filter screen 72 has a conical structure.

[0029] The bottom of the pump body 2 is provided with a liquid outlet 21 , which is coaxial with the liquid inlet 3 . A liquid outlet pipe 22 is installed inside the liquid outlet 21 , and the liquid outlet pipe 22 is detachably arranged inside the liquid outlet 21 .

[0030] Among them, the liquid inlet pipe 4 is threadedly connected to the inner wall of the liquid inlet hole 3, and the outer surface of the liquid inlet pipe 4 is integrally formed with a mounting plate 41. Bolts are provided between the mounting plate 41 and the outer shell of the pump body 2 to facilitate the disassembly and assembly of the liquid inlet pipe 4, thereby facilitating the regular replacement of the filter screen 72 in the filter assembly 7.

[0031] Among them, the inner wall of the liquid inlet pipe 4 is integrally formed with a circular plate 42, and the circular plate 42 is located below the partition 5. A through hole 43 is provided on the top surface of the circular plate 42. There are multiple through holes 43, and a perforation 44 is provided between two adjacent through holes 43. Preferably, a groove is provided at the bottom center of the circular plate 42, and a protrusion is integrally formed at the top center of the filter screen 72, and the cross-sections of the protrusion and the groove are both polygonal structures. The top of the filter screen 72 is limited and fixed by the groove and the protrusion, thereby improving the installation strength of the filter screen 72.

[0032] The first buffer member 61 includes a telescopic member 611 installed between the partition 5 and the circular plate 42 and a first compensation member 612 arranged outside the telescopic member 611. Preferably, the first compensation member 612 is a telescopic spring and the telescopic member 611 is a telescopic rod.

[0033] There are multiple groups of second buffer members 62, and the multiple groups of second buffer members 62 are distributed in a circular array with the center point of the circular plate 42 as the center.

[0034] The second buffer member 62 includes a vertical rod 621 movably arranged inside the through hole 44 and a second compensation member 622 arranged outside the vertical rod 621. A limit block is installed at the bottom of the vertical rod 621. The second compensation member 622 is arranged between the limit block and the circular plate 42. Preferably, the second compensation member 622 is a telescopic spring.

[0035] During use, the liquid enters the liquid inlet hole 3 through the liquid inlet pipe 4, impacting the partition 5, causing the partition 5 to move toward the inside of the pump chamber 1, and cooperates with the telescopic member 611 and the first compensation member 612 to support the middle part of the partition 5, and then cooperates with multiple vertical rods 621 and the second compensation member 622 arranged on the outside of the vertical rod 621 to support the surrounding side of the partition 5, thereby improving the support strength and preventing the partition 5 from being offset after being impacted, thereby preventing the first compensation member 612 or the second compensation member 622 from being damaged by the force, and then the liquid enters the pump chamber 1 through the gap between the partition 5 and the inner wall of the liquid inlet pipe 4.

[0036] like Figure 1 、 Figure 2 and Figure 4 As shown, a hydraulic gear pump liquid inlet assembly includes a pump body 2 having a pump chamber 1, a liquid inlet hole 3 is opened at the top center of the pump chamber 1, a liquid inlet pipe 4 is arranged inside the liquid inlet hole 3, a partition 5 is arranged inside the liquid inlet hole 3, a supporting assembly 6 is arranged at the bottom of the partition 5, and a filter assembly 7 is arranged at the bottom of the supporting assembly 6;

[0037] The supporting assembly 6 includes a first buffer member 61 disposed at the center of the bottom of the partition 5 and a second buffer member 62 disposed outside the first buffer member 61;

[0038] The filter assembly 7 includes a storage unit 71 arranged at the bottom of the liquid inlet pipe 4 and a filter screen 72 arranged in the middle of the storage unit 71. The filter screen 72 has a conical structure. By setting the filter screen 72 to have a conical structure, when the liquid is filtered through the filter screen 72, the impurities in the liquid are intercepted on the surface of the filter screen 72 and move toward the side of the storage unit 71 through the surface slope of the filter screen 72.

[0039] Among them, the storage unit 71 includes a mounting base 711 arranged at the bottom of the liquid inlet pipe 4, and a storage cavity 712 arranged on the inner wall of the mounting base 711. The longitudinal section of the storage cavity 712 is an "L"-shaped structure. Since the longitudinal section of the storage cavity 712 is an "L"-shaped structure, when the impurities move along the surface slope of the filter 72, they enter the interior of the storage cavity 712, and after the impurities enter the interior of the storage cavity 712, they will not flow back to the surface of the filter 72.

[0040] A mounting hole is provided at the bottom center of the mounting seat 711 , and the filter screen 72 is installed inside the mounting hole through a locking bolt, making it easy to disassemble and assemble the mounting seat 711 .

[0041] During use, when the liquid is filtered through the filter 72, impurities in the liquid are intercepted on the surface of the filter 72, so that the impurities move along the surface slope of the filter 72 and enter the interior of the storage cavity 712. After the impurities enter the interior of the storage cavity 712, they will not flow back to the surface of the filter 72, thereby preventing impurities from accumulating on the surface of the filter 72 and affecting the filtering effect.

[0042] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic gear pump liquid inlet assembly, comprising a pump body (2) having a pump chamber (1), a liquid inlet hole (3) being provided at the center of the top of the pump chamber (1), a liquid inlet pipe (4) being provided inside the liquid inlet hole (3), and a partition (5) being provided inside the liquid inlet hole (3), characterized in that: A supporting assembly (6) is provided at the bottom of the partition (5), and a filtering assembly (7) is provided at the bottom of the supporting assembly (6); The supporting assembly (6) comprises a first buffer member (61) arranged at the bottom center of the partition (5) and a second buffer member (62) arranged outside the first buffer member (61); The filter assembly (7) comprises a storage unit (71) arranged at the bottom of the liquid inlet pipe (4) and a filter screen (72) arranged in the middle of the storage unit (71); the filter screen (72) has a conical structure.

2. The hydraulic gear pump liquid inlet assembly according to claim 1, characterized in that: A liquid outlet hole (21) is provided at the bottom of the pump body (2), the liquid outlet hole (21) and the liquid inlet hole (3) are coaxially arranged, and a liquid outlet pipe (22) is installed inside the liquid outlet hole (21).

3. The hydraulic gear pump liquid inlet assembly according to claim 1, characterized in that: The liquid inlet pipe (4) is threadedly connected to the inner wall of the liquid inlet hole (3); a mounting plate (41) is integrally formed on the outer surface of the liquid inlet pipe (4); and bolts are provided between the mounting plate (41) and the outer shell of the pump body (2).

4. The hydraulic gear pump liquid inlet assembly according to claim 3, characterized in that: A circular plate (42) is integrally formed on the inner wall of the liquid inlet pipe (4), and the circular plate (42) is located below the partition (5). A through hole (43) is provided on the top surface of the circular plate (42). There are multiple through holes (43), and a through hole (44) is provided between two adjacent through holes (43).

5. The hydraulic gear pump liquid inlet assembly according to claim 4, characterized in that: The first buffer member (61) comprises a telescopic member (611) installed between the partition (5) and the circular plate (42), and a first compensation member (612) arranged outside the telescopic member (611).

6. The hydraulic gear pump liquid inlet assembly according to claim 5, characterized in that: There are multiple groups of the second buffer members (62), and the multiple groups of the second buffer members (62) are distributed in a circular array with the center point of the circular plate (42) as the center of the circle; The second buffer member (62) comprises a vertical rod (621) movably arranged inside the through hole (44), and a second compensation member (622) arranged outside the vertical rod (621). A limit block is installed at the bottom of the vertical rod (621), and the second compensation member (622) is arranged between the limit block and the circular plate (42).

7. The hydraulic gear pump liquid inlet assembly according to claim 1, characterized in that: The storage unit (71) comprises a mounting seat (711) arranged at the bottom of the liquid inlet pipe (4), and a storage cavity (712) arranged on the inner wall of the mounting seat (711); the longitudinal section of the storage cavity (712) is an "L"-shaped structure.

8. The hydraulic gear pump liquid inlet assembly according to claim 7, characterized in that: A mounting hole is provided at the center of the bottom of the mounting seat (711), and the filter screen (72) is mounted inside the mounting hole via a locking bolt.

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