Hydraulic gear pump with flow divider valve

Abstract

The utility model discloses a hydraulic gear pump with shunt valve relates to hydraulic gear pump technical field, including pump body and shunt valve body, the shunt valve body sets up in the upper surface of pump body, the upper surface middle part of pump body is provided with the liquid outlet, the lower extreme fixed setting of shunt valve body has the liquid inlet pipe, the liquid inlet pipe is inserted with the liquid outlet of pump body, the both sides of the upper end of shunt valve body all are provided with the shunt pipe, the lower extreme outer wall of shunt valve body is fixed with first polygonal ring, the outer wall matching sliding sleeve of first polygonal ring has second polygonal ring, the downside of second polygonal ring is fixedly connected with pump body, the both sides of second polygonal ring all are rotatably arranged with the rotating lever, the other end fixed setting of rotating lever has the connecting rod, the upper end fixed connection of connecting rod has the clamping block. The utility model can save time and labour to dismount with pump body to shunt valve, and the shunt valve and pump body are maintained alone conveniently.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic gear pump technology, and specifically to a hydraulic gear pump with a flow divider valve. Background Technology

[0002] In practical hydraulic systems, it is often necessary to divert the hydraulic oil output from the hydraulic pump to different actuators to achieve different actions. Currently, this diversion function is usually achieved by connecting a diverter valve to the outlet of the hydraulic gear pump.

[0003] Existing hydraulic gear pumps with integrated flow divider valves typically have the flow divider valve and pump body fixedly connected. When the flow divider valve or pump body malfunctions and requires maintenance, the disassembly and assembly process is cumbersome, time-consuming, and labor-intensive, making it inconvenient to maintain both separately, thus increasing maintenance costs and time. Utility Model Content

[0004] In view of the problems existing in the existing hydraulic gear pumps with flow divider valves, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a hydraulic gear pump with a flow divider valve, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hydraulic gear pump with a flow divider valve includes a pump body and a flow divider valve body. The flow divider valve body is disposed on the upper surface of the pump body. An outlet is provided in the middle of the upper surface of the pump body. An inlet pipe is fixedly disposed at the lower end of the flow divider valve body and is inserted into the outlet of the pump body. Flow divider pipes are provided on both sides of the upper end of the flow divider valve body. A first polygonal ring is fixedly sleeved on the lower outer wall of the flow divider valve body. A second polygonal ring is slidably sleeved on the outer wall of the first polygonal ring. The lower side of the second polygonal ring is fixedly connected to the pump body. Rotating rods are rotatably disposed on both sides of the second polygonal ring. A connecting rod is fixedly disposed at the other end of the rotating rod. A locking block is fixedly connected to the upper end of the connecting rod. Grooves are provided on both outer walls of the flow divider valve body. The locking blocks on both sides engage with the corresponding locking grooves. A cavity is provided inside the rotating rod at the end away from the connecting rod. A limiting mechanism for restricting the rotation of the rotating rod is provided inside the cavity.

[0008] Preferably, the limiting mechanism includes a stop block and a limiting block. A limiting hole is formed on the upper surface of the second polygonal ring at a position corresponding to the rotating rod. The stop block is slidably disposed inside the cavity. The limiting block is fixedly disposed on the side of the stop block near the limiting block. The upper side of the limiting block extends to the outer side of the cavity and is inserted into the limiting hole. A spring is fixedly disposed on the lower side of the stop block. The other end of the spring is fixedly connected to the inner wall of the cavity.

[0009] Preferably, a slide rod is fixedly provided on one side of the cavity, and one side of the stop block is movably sleeved with the slide rod.

[0010] Preferably, the inner wall of the outlet of the pump body is provided with a first sealing ring.

[0011] Preferably, a second sealing ring is fixedly provided on the lower side of the first polygonal ring.

[0012] Preferably, the first polygonal ring is welded and fixed to the outer wall of the diversion valve body, and the second polygonal ring is welded and fixed to the upper surface of the pump body.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model, through the snap-fit ​​engagement of the card block and the card slot, combined with the rotational transmission of the rotating rod, can quickly realize the disassembly and assembly of the diversion valve body and the pump body without complicated tools, greatly shortening maintenance time and facilitating individual inspection or replacement of both.

[0015] 2. This utility model restricts the circumferential rotation of the diversion valve body by matching and sleeved the first polygonal ring and the second polygonal ring, and the locking and fixing of the locking block and the locking groove ensures axial positioning. Combined with the double sealing design of the first and second sealing rings, it effectively prevents hydraulic oil leakage and ensures the stability of the hydraulic system.

[0016] 3. This utility model uses a limiting mechanism to automatically lock the position of the rotating rod by spring force to prevent the jamming block from loosening; the sliding rod guides the stop block to move smoothly, ensuring that the limiting block is accurately inserted into the limiting hole. The overall structure is simple and easy to operate, and it is suitable for hydraulic system scenarios that require frequent maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the structure of a hydraulic gear pump with a flow divider valve proposed in this utility model;

[0019] Figure 2 for Figure 1 Enlarged structural diagram of part A in the middle section;

[0020] Figure 3 for Figure 1 A top view of the structure of the first and second polygonal rings.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Pump body; 2. Diverter valve body; 3. Inlet pipe; 4. Diverter pipe; 5. First polygonal ring; 6. Second polygonal ring; 7. Connecting rod; 8. Locking block; 9. Rotating rod; 10. Stop block; 11. Limiting block; 12. Slide rod; 13. Spring. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model discloses a hydraulic gear pump with a flow divider valve.

[0025] Example 1

[0026] Reference Figure 1-3 A hydraulic gear pump with a flow divider valve includes a pump body 1 and a flow divider valve body 2. The flow divider valve body 2 is disposed on the upper surface of the pump body 1. An outlet is provided in the middle of the upper surface of the pump body 1. A first sealing ring is provided on the inner wall of the outlet of the pump body 1 to improve the sealing between the inlet pipe 3 and the outlet. An inlet pipe 3 is fixedly disposed at the lower end of the flow divider valve body 2 and is inserted into the outlet of the pump body 1. Flow divider pipes 4 are provided on both sides of the upper end of the flow divider valve body 2. A first polygonal ring 5 is fixedly sleeved on the outer wall of the lower end of the flow divider valve body 2. The outer wall of the first polygonal ring 5 is fitted with a second polygonal ring 6. The lower side of the second polygonal ring 6 is fixedly connected to the pump body 1. Rotating rods 9 are rotatably provided on both sides of the second polygonal ring 6. A connecting rod 7 is fixedly provided at the other end of the rotating rod 9. A locking block 8 is fixedly connected to the upper end of the connecting rod 7. Grooves are provided on both outer walls of the diversion valve body 2. The locking blocks 8 on both sides are engaged with the corresponding slots. A cavity is provided inside the end of the rotating rod 9 away from the connecting rod 7. A limiting mechanism is provided inside the cavity to restrict the rotation of the rotating rod 9.

[0027] Example 2

[0028] Reference Figure 1-3 The limiting mechanism includes a stop block 10 and a limiting block 11. A limiting hole is opened on the upper surface of the second polygonal ring 6 at a position corresponding to the rotating rod 9. The stop block 10 is slidably disposed inside the cavity. The limiting block 11 is fixedly disposed on the side of the stop block 10 close to the limiting block 11. The upper side of the limiting block 11 extends to the outer side of the cavity and is inserted into the limiting hole. A spring 13 is fixedly disposed on the lower side of the stop block 10. The other end of the spring 13 is fixedly connected to the inner wall of the cavity.

[0029] Example 3

[0030] Reference Figure 1-3A second sealing ring is fixedly provided on the lower side of the first polygonal ring 5 to improve the sealing between the first polygonal ring 5 and the pump body 1. The first polygonal ring 5 is welded and fixed to the outer wall of the diversion valve body 2 to improve the connection strength between the first polygonal ring 5 and the diversion valve body 2. The second polygonal ring 6 is welded and fixed to the upper surface of the pump body 1 to improve the connection strength between the second polygonal ring 6 and the pump body 1.

[0031] In this utility model, when the pump body 1 is working, the hydraulic oil output enters the inlet pipe 3 of the diversion valve body 2 through the outlet. After being distributed by the internal flow channel of the diversion valve body 2, it is delivered to different actuators from the two diversion pipes 4 to realize the function of diverting hydraulic oil.

[0032] When it is necessary to separate the diversion valve body 2 from the pump body 1 for maintenance, press the limiting block 11 at the end of the rotating rod 9 on both sides. The limiting block 11 pushes the stop block 10 to compress the spring 13 and retracts into the cavity, disengaging from the upper limit hole of the second polygonal ring 6, releasing the rotation restriction on the rotating rod 9. Then rotate the rotating rod 9 outward. The rotating rod 9 drives the connecting rod 7 and the locking block 8 to rotate synchronously, causing the locking block 8 to disengage from the locking groove on the side wall of the diversion valve body 2, releasing the axial fixation.

[0033] Pull the diversion valve body 2 upwards, and the liquid inlet pipe 3 at the lower end of the diversion valve body 2 will be pulled out from the liquid outlet of the pump body 1. At the same time, the first polygonal ring 5 will slide and separate along the inner wall of the second polygonal ring 6, thus completing the separation of the diversion valve body 2 from the pump body 1. After separation, the pump body 1 and the diversion valve body 2 can be inspected and repaired separately. After the inspection and repair are completed, they can be reset and installed.

[0034] During installation, align the inlet pipe 3 of the diverter valve body 2 with the outlet of the pump body 1 and insert it. Fit the first polygonal ring 5 into the second polygonal ring 6, ensuring that the two match and fit together. Rotate the rotating rod 9 inward so that the locking block 8 is locked into the slot of the diverter valve body 2. At this time, the spring 13 pushes the stop block 10 and the limit block 11 to reset. The limit block 11 is inserted into the limit hole to lock the rotating rod 9. The first sealing ring enhances the sealing between the inlet pipe 3 and the outlet. The second sealing ring seals the contact surface between the first polygonal ring 5 and the pump body 1 to prevent hydraulic oil leakage.

[0035] The polygonal structure (such as hexagon) of the first polygonal ring 5 and the second polygonal ring 6 ensures that there is no relative rotation between the diversion valve body 2 and the pump body 1, and ensures the stability of the position of the diversion pipe 4; the slide rod 12 restricts the sliding direction of the stop block 10, avoids the offset of the limit block 11, and ensures the reliable operation of the limit mechanism. This device, through its convenient disassembly and assembly structure and reliable sealing design, takes into account both maintenance efficiency and system stability, and is suitable for various hydraulic gear pump systems with diversion requirements.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hydraulic gear pump with a flow divider, comprising a pump body (1) and a flow divider body (2), characterized in that, The shunt valve body (2) is arranged on the upper surface of the pump body (1), the middle of the upper surface of the pump body (1) is provided with a liquid outlet, the lower end of the shunt valve body (2) is fixedly provided with a liquid inlet pipe (3), the liquid inlet pipe (3) is inserted with the liquid outlet of the pump body (1), the upper end of the shunt valve body (2) is provided with a shunt pipe (4) on both sides, the lower end of the shunt valve body (2) is fixedly sleeved with a first polygonal ring (5), the outer wall of the first polygonal ring (5) is slidably sleeved with a second polygonal ring (6), the lower side of the second polygonal ring (6) is fixedly connected with the pump body (1), the two sides of the second polygonal ring (6) are rotatably provided with a rotating rod (9), the other end of the rotating rod (9) is fixedly provided with a connecting rod (7), the upper end of the connecting rod (7) is fixedly connected with a clamping block (8), the outer wall of the shunt valve body (2) is provided with a groove on both sides, the clamping block (8) is clamped with the corresponding clamping groove, the end of the rotating rod (9) away from the connecting rod (7) is provided with a cavity in the inside, and the inside of the cavity is provided with a limiting mechanism for limiting the rotation of the rotating rod (9).

2. The hydraulic gear pump with a flow divider according to claim 1, characterized in that, The limiting mechanism comprises a stop block (10) and a limiting block (11), the upper surface of the second polygonal ring (6) and the position corresponding to the rotating rod (9) are provided with a limiting hole, the stop block (10) is slidably arranged in the cavity, the limiting block (11) is fixedly arranged on one side of the stop block (10) close to the limiting block (11), the upper side of the limiting block (11) extends to the outside of the cavity and is inserted with the limiting hole, the lower side of the stop block (10) is fixedly provided with a spring (13), and the other end of the spring (13) is fixedly connected with the inner wall of the cavity.

3. The hydraulic gear pump with a flow divider according to claim 2, characterized in that, The inside of the cavity is fixedly provided with a sliding rod (12), and one side of the stop block (10) is movably sleeved with the sliding rod (12).

4. The hydraulic gear pump with a flow divider according to claim 1, characterized in that, The inner wall of the liquid outlet of the pump body (1) is provided with a first sealing ring.

5. The hydraulic gear pump with a flow divider according to claim 1, wherein, The lower side of the first polygonal ring (5) is fixedly provided with a second sealing ring.

6. The hydraulic gear pump with a flow divider according to claim 1, characterized in that, The first polygonal ring (5) and the outer wall of the shunt valve body (2) are welded and fixed, and the second polygonal ring (6) and the upper surface of the pump body (1) are welded and fixed.

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