CN220378579U - Hydraulic control reversing valve for HPV pump - Google Patents

Abstract

The utility model relates to the technical field of reversing valve equipment, and provides a hydraulic control reversing valve for an HPV (human papilloma Virus) pump, which comprises a shell with a cavity, a steering valve core and a control valve core, wherein the steering valve core and the control valve core are arranged in the shell in parallel, and a connecting rod is connected between the steering valve core and the control valve core and forms a lever structure to drive the steering valve core and the control valve core to slide in the shell. Through the steering valve core and the control valve core, the steering valve core and the control valve core form a lever structure by matching with a connecting rod, and the sliding of the steering valve core can be completed only by adjusting the oil pressure at the two ends of the control valve core, so that the structure is simple.

Description

Hydraulic control reversing valve for HPV pump

Technical Field

The utility model relates to the technical field of reversing valve equipment, in particular to a hydraulic control reversing valve for a closed pump (HPV pump).

Background

The hydraulic control reversing valve refers to an element used for controlling the pressure, flow and direction of liquid in a hydraulic transmission system or a hydraulic control system, and is called a direction control valve for controlling on, off and flow direction. The existing hydraulic control reversing valve is provided with a plurality of pipelines in a shell, the pipelines are connected in a complex manner, a control valve core is driven by oil in the complex pipeline, the trend of the control valve core is controlled by oil flowing through different pipelines so as to control the sliding of a steering valve core, and the structure is complex.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a hydraulic control reversing valve for a closed pump (HPV pump), which overcomes the defects of the prior art, has reasonable design and compact structure and solves the problems in the background art.

Technical proposal

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

a hydraulic control reversing valve for a closed pump (HPV pump) comprises a shell with a cavity, a steering valve core and a control valve core, wherein the steering valve core and the control valve core are arranged in the shell in parallel, and a connecting rod is connected between the steering valve core and the control valve core and forms a lever structure to drive the steering valve core and the control valve core to slide in the shell.

Preferably, a groove is formed in the control valve core at the cavity of the shell, a connecting rod is arranged in the groove, the connecting rod is connected with an end pin shaft of the steering valve core, and the steering valve core, the control valve core and the connecting rod form a lever structure.

Preferably, the steering valve core is sleeved with a pair of convex rings, and a closed annular cavity is formed between the convex rings and the slideway of the steering valve core.

Preferably, the shell is further provided with a first oil outlet, a second oil outlet and an oil inlet, the first oil outlet, the second oil outlet and the oil inlet are all communicated in a slideway of the steering valve core, the first oil outlet and the second oil outlet are positioned at two sides of the annular cavity, and the oil inlet is positioned in the annular cavity.

Preferably, the shell is provided with a first hydraulic hole and a second hydraulic hole, and the first hydraulic hole and the second hydraulic hole are respectively positioned at the edge of the shell and are communicated with the slideway of the control valve core.

Preferably, a first plug and a second plug for sealing the slideway of the control valve core are connected to two ends of the shell, and the first plug and the second plug form a cavity and are communicated with the second hydraulic hole and the first hydraulic hole.

Preferably, the shell is further provided with a first oil return port and a second oil return port, and the first oil return port and the second oil return port are communicated with a slideway of the steering valve core.

Preferably, the casing is provided with an oil return groove, and the first oil return opening is communicated with the oil return groove and extends into the cavity of the casing.

Preferably, a return spring sleeved on the control valve core is further arranged in the slide way of the control valve core, and a return spring is further arranged in the end of the slide way of the steering valve core.

The embodiment of the utility model provides a hydraulic control reversing valve for a closed pump (HPV pump). The beneficial effects are as follows:

through the steering valve core and the control valve core, the steering valve core and the control valve core form a lever structure by matching with a connecting rod, and the sliding of the steering valve core can be completed only by adjusting the oil pressure at the two ends of the control valve core, so that the structure is simple.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic front view of FIG. 1;

FIG. 3 is a partial schematic view of FIG. 2;

FIG. 4 is a side view of FIG. 2;

fig. 5 is a schematic cross-sectional view of line A-A of fig. 4.

In the figure: 1. a housing; 11. a first oil outlet; 12. a second oil outlet; 13. an oil inlet; 14. a first oil return port; 15. a second oil return port; 2. a steering valve core; 21. a convex ring; 3. a control valve core; 31. a first plug; 32. a second plug; 4. a connecting rod; 5. a first hydraulic bore; 6. and a second hydraulic orifice.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the device comprises a shell 1 with a cavity, the device is directly connected with an oil tank, oil is filled in the whole shell 1, a steering valve core 2 and a control valve core 3 are arranged in the shell 1 in parallel, the steering valve core 2 and the control valve core 3 slide in the shell 1 and form a slide way for accommodating the steering valve core 2 and the control valve core 3, a first plug 31 and a second plug 32 are sealed at two ends of the slide way of the control valve core 3 in a threaded manner, a cavity is formed at the first plug 31 and the second plug 32, a first hydraulic hole 5 and a second hydraulic hole 6 are formed in the shell 1, the first hydraulic hole 5 and the second hydraulic hole 6 are respectively communicated in the cavity of the second plug 32 and the first plug 31, the first hydraulic hole 5 and the second hydraulic hole 6 are positioned at two sides of the edge of the shell 1, and the control valve core 3 in the shell is slid by means of oil pressure difference between the first hydraulic hole 5 and the second hydraulic hole 6;

the steering valve core 2 is sleeved with a pair of convex rings 21, the convex rings 21 and a slideway of the steering valve core 2 form a closed annular cavity, the shell 1 is also provided with a first oil outlet 11, a second oil outlet 12 and an oil inlet 13, the first oil outlet 11 and the second oil outlet 12 are positioned at two sides of the annular cavity of the convex rings 21 and are communicated with the slideway of the steering valve core 2, the oil inlet 13 is positioned in the second oil outlet 12 and is communicated with the slideway of the steering valve core 2, the first oil outlet 11, the second oil outlet 12 and the oil inlet 13 form a one-position two-way structure, and the first oil outlet 11 and the second oil outlet 12 are connected with a variable cylinder of a pump body through pipelines;

the control valve core 3 in the cavity of the shell 1 is provided with a groove, the groove is internally provided with a connecting rod 4, the end part of the connecting rod 4 is a round piece, the round piece is contracted outside the groove and wrapped, the round piece is convenient to swing in the groove and cannot fall off from the inside of the groove, the connecting rod 4 is connected with one end part of the steering valve core 2 through a pin shaft, the control valve core 3 is pushed to slide by the oil pressure difference between the first hydraulic hole 5 and the second hydraulic hole 6, and the connecting rod 4 is driven to swing so as to push the steering valve core 2 to slide in the shell 1, so that steering is realized.

In this embodiment, the casing 1 is further provided with a first oil return port 14 and a second oil return port 15, and the first oil return port 14 and the second oil return port 15 are communicated with the slideway of the steering valve core 2 and are located at two sides of the annular cavity formed by the convex ring 21.

In this embodiment, the casing 1 is provided with an oil return groove, and the first oil return opening 14 is communicated with the oil return groove and extends into the cavity of the casing 1.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (9)

1. A hydraulic control reversing valve for an HPV pump comprises a shell (1) with a cavity, a steering valve core (2) and a control valve core (3);

the method is characterized in that: the steering valve core (2) and the control valve core (3) are arranged in the shell (1) in parallel, a connecting rod (4) is further connected between the steering valve core (2) and the control valve core (3) and forms a lever structure to drive the steering valve core (2) and the control valve core (3) to slide in the shell (1).

2. The hydraulically controlled reversing valve for an HPV pump of claim 1, wherein: a groove is formed in a control valve core (3) located at a cavity of the shell (1), a connecting rod (4) is arranged in the groove, the connecting rod (4) is connected with an end pin shaft of the steering valve core (2), and the steering valve core (2), the control valve core (3) and the connecting rod (4) form a lever structure.

3. The hydraulically controlled reversing valve for an HPV pump of claim 1, wherein: a pair of convex rings (21) are sleeved on the steering valve core (2), and a closed annular cavity is formed between the convex rings (21) and a slideway of the steering valve core (2).

4. A pilot operated directional valve for an HPV pump as set forth in claim 3 wherein: the shell (1) is further provided with a first oil outlet (11), a second oil outlet (12) and an oil inlet (13), the first oil outlet (11), the second oil outlet (12) and the oil inlet (13) are all communicated in a slideway of the steering valve core (2), the first oil outlet (11) and the second oil outlet (12) are located on two sides of the annular cavity, and the oil inlet (13) is located in the annular cavity.

5. The hydraulically controlled reversing valve for an HPV pump of claim 1, wherein: the shell (1) is provided with a first hydraulic hole (5) and a second hydraulic hole (6), and the first hydraulic hole (5) and the second hydraulic hole (6) are respectively positioned at the edge of the shell (1) and are communicated with a slideway of the control valve core (3).

6. The hydraulically controlled reversing valve for an HPV pump of claim 1, wherein: the two ends of the shell (1) are connected with a first plug (31) and a second plug (32) of a slideway of the sealing control valve core (3), and the first plug (31) and the second plug (32) form a cavity and are communicated with the second hydraulic hole (6) and the first hydraulic hole (5).

7. The hydraulically controlled reversing valve for an HPV pump of claim 1, wherein: the casing (1) is further provided with a first oil return port (14) and a second oil return port (15), and the first oil return port (14) and the second oil return port (15) are communicated with a slideway of the steering valve core (2).

8. The hydraulically controlled reversing valve for an HPV pump of claim 7, wherein: an oil return groove is formed in the shell (1), and the first oil return opening (14) is communicated with the oil return groove and extends into a cavity of the shell (1).

9. The hydraulically controlled reversing valve for an HPV pump of claim 1, wherein: a return spring sleeved on the control valve core (3) is further arranged in the slideway of the control valve core (3), and a return spring is further arranged in the slideway end of the steering valve core (2).