CN220286511U - Double-pump converging valve and hydraulic control system - Google Patents

Abstract

The utility model relates to the technical field of hydraulic control, and discloses a double-pump converging valve and a hydraulic control system. The double pump confluence valve of the present utility model comprises: the valve body is provided with a valve cavity, an oil inlet, a working oil port A and a working oil port B, the joint seat and the end cover are respectively arranged on the valve body to seal the valve cavity, the spring and the valve core are arranged in the valve cavity, two ends of the valve core are respectively abutted against the joint seat and the spring, the other end of the spring is abutted against the end cover, and the joint seat is provided with a control oil port. According to the double-pump converging valve, the valve core slides in the cavity by controlling the oil and the spring, and the opening, closing and reversing of the oil inlet and the working oil port A or the working oil port B are controlled, so that the converging of the flow of the pump set can be realized by connecting a plurality of double-pump converging valves with the original pump set and other pump sets.

Description

Double-pump converging valve and hydraulic control system

Technical Field

The embodiment of the utility model relates to the technical field of hydraulic control, in particular to a double-pump converging valve and a hydraulic control system.

Background

The hydraulic control system is based on power provided by a motor, uses a hydraulic pump to convert mechanical energy into pressure, pushes hydraulic oil, and changes the flow direction of the hydraulic oil by controlling various valves so as to push a hydraulic cylinder to perform actions with different strokes and different directions, thereby completing different action requirements of various devices.

In industrial production, hydraulic systems often require actuators that control multiple flow demands, so that there is a condition that a single pump set cannot meet its required flow, requiring replacement of a large pump set or addition of a pump set to provide more flow.

The inventor of the application finds that the current practice is to add a large multi-way valve in the hydraulic system to complete the confluence of the double pumps, but the method has high cost and complex structure, and the whole assembly must be replaced if damaged.

Disclosure of Invention

The utility model aims to provide a double-pump converging valve and a hydraulic control system, which are simple in structure and are used for solving the problems in the background technology.

The embodiment of the utility model provides a double-pump converging valve, which comprises the following components: the valve comprises a valve body, a valve core, a joint seat, an end cover and a spring;

the valve body is provided with a valve cavity;

the valve cavity axially penetrates through the valve body, and the connector seat and the end cover are respectively arranged at two sides of the valve body and used for sealing the valve cavity;

the side wall of the valve body is provided with an oil inlet, a working oil port A and a working oil port B;

the oil inlet, the working oil port A and the working oil port B are respectively communicated with the valve cavity, the working oil port A and the working oil port B are respectively positioned at two sides of the oil inlet, the oil inlet is used for being connected with a pump set, and the working oil port A and the working oil port B are used for being connected with an executing mechanism;

the spring is arranged in the valve cavity and is propped against the end cover;

the valve core is provided with a convex section and a concave section;

the valve core is slidably arranged in the valve cavity, two ends of the valve core are respectively propped against the joint seat and the spring, and the protruding section is propped against the inner wall of the valve cavity and used for blocking the communication between the working oil port B and the oil inlet;

the valve core is characterized in that the connector seat is provided with a control oil port, the control oil port is communicated with the valve cavity, the connector seat is used for being connected with a control oil supply mechanism, control oil is used for pushing the valve core to slide, the valve core is used for enabling the working oil port B to be communicated with the oil inlet and blocking the working oil port A from being communicated with the oil inlet when sliding.

Based on the scheme, the double-pump converging valve is provided with the valve body, the valve core, the joint seat, the end cover and the spring, wherein the valve body is provided with the valve cavity, the oil inlet, the working oil port A and the working oil port B, the joint seat and the end cover are respectively arranged on the valve body to seal the valve cavity, the valve core and the spring are arranged in the valve cavity, two ends of the valve core are respectively propped against the joint seat and the spring, the other end of the spring is propped against the end cover, and the joint seat is provided with the control oil port. According to the double-pump converging valve, the valve core can slide left and right in the cavity of the valve body by adjusting the pressure of control oil and the elasticity of the spring, and the opening, closing and reversing of the oil inlet and the working oil port A or the working oil port B of the valve body are controlled. When the hydraulic system needs to control various actuating mechanisms and various flow and large flow, and a single pump set cannot meet the requirement of adding the pump set, the flow of the pump set is converged through connection of a plurality of double-pump converging valves with the original pump set and other pump sets, and compared with a traditional flow increasing mode, the hydraulic system has the advantages of small volume, convenience in installation, lower cost and the like.

In one possible solution, the valve body is provided with internal threads at both ends of the valve cavity;

the joint seat and the end cover are provided with external threads which are respectively meshed with the internal threads of the valve body.

In one possible solution, the end cap is provided with an oil drain, which communicates with the valve chamber.

In one possible solution, the valve core is provided with a protruding column, and the end cover is provided with a groove;

the spring is sleeved on the protruding column and embedded in the groove.

In one possible solution, the valve body is provided with a plurality of mounting holes.

The embodiment of the utility model also provides a double-pump converging valve, which comprises: pump unit, actuator, control oil supply mechanism, and double pump confluence valve according to any of the above designs;

the pump set comprises: a first pump group and a second pump group;

the actuator comprises: the first executing mechanism, the second executing mechanism and the third executing mechanism;

the double pump confluence valve includes: the first double-pump converging valve and the second double-pump converging valve;

the oil inlets of the first double-pump converging valve and the second double-pump converging valve are respectively connected with the first pump group and the second pump group, and the control oil ports are respectively connected with the control oil supply mechanism;

the working oil port A of the first double-pump converging valve is connected with the first executing mechanism, the working oil port A of the second double-pump converging valve is connected with the third executing mechanism, and the working oil ports B of the first double-pump converging valve and the second double-pump converging valve are connected with the second executing mechanism.

In one possible implementation, the method further includes: the oil tank is connected;

and oil drainage ports of the first double-pump converging valve and the second double-pump converging valve are respectively connected with the oil receiving tank.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a dual pump junction valve in accordance with a first embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a dual pump junction valve in accordance with a first embodiment of the present utility model;

fig. 3 is a schematic diagram of the working principle of the double pump converging valve in the first embodiment of the utility model;

fig. 4 is a schematic diagram of a hydraulic control system according to a second embodiment of the present utility model.

Reference numerals in the drawings:

1. a valve body; 11. a valve cavity; 12. an oil inlet; 13. a working oil port A; 14. a working oil port B; 15. a mounting hole; 2. a valve core; 21. a protruding section; 22. a recessed section; 23. a protruding column; 3. a joint seat; 31. an oil port is controlled; 4. an end cap; 41. an oil drain port; 5. a spring; 61. a first pump group; 61. a second pump group; 71. a first actuator; 72. a second actuator; 73. a third actuator; 8. and (5) connecting an oil tank.

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.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; either directly, or indirectly, through intermediaries, may be in communication with each other, or may be in interaction with each other, unless explicitly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The technical scheme of the utility model is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

As described in the background of the present application, in industrial production, hydraulic systems often require actuators that control multiple flow demands, so that there are conditions where a single pump set cannot meet its required flow, requiring replacement of a large pump set or addition of a pump set to provide more flow.

The inventors of the present application have found that it is currently common to add a large multiple way valve to the hydraulic system to complete the flow combining of the dual pumps to provide multiple flows and/or large flows to the system, but this approach is costly, complex in construction and requires replacement of the entire assembly if damaged.

In order to solve the above problems, the present inventors propose a technical solution of the present application, and specific embodiments are as follows:

example 1

Fig. 1 is a schematic diagram of a double-pump junction valve in a first embodiment of the present utility model, fig. 2 is a schematic cross-sectional diagram of the double-pump junction valve in the first embodiment of the present utility model, and fig. 3 is a schematic diagram of an operating principle of the double-pump junction valve in the first embodiment of the present utility model.

As shown in fig. 1 to 3, the double pump confluence valve of the present embodiment includes: a valve body 1, a valve core 2, a joint seat 3, an end cover 4 and a spring 5.

The valve body 1 is internally provided with a valve cavity 11, the valve cavity 11 axially penetrates through the valve body 1, and the valve cavity 11 is formed into openings at the left end and the right end of the valve body.

The joint seat 3 and the end cover 4 are arranged on the valve body 1 and are respectively positioned at the openings at the left end and the right end of the valve body 1, and the joint seat 3 and the end cover 4 are respectively in sealing connection with the valve body 1 to block and seal the valve cavity 11 of the valve body 1.

The side wall of the valve body 1 is provided with an oil inlet 12 (P port), a working oil port A13 (A port) and a working oil port B14 (B port).

The oil inlet 12 (P mouth), the working oil port A13 (A mouth) and the working oil port B14 (B mouth) of the valve body 1 are respectively communicated with the valve cavity 11 of the valve body 1, the working oil port A13 and the working oil port B14 are respectively positioned on the left side and the right side of the oil inlet 12 (P mouth), the oil inlet 12 (P mouth) of the valve body 1 is used for being connected with a pump group, and the working oil port A13 and the working oil port B14 of the valve body 1 are respectively used for being connected with an executing mechanism.

The spring 5 is provided in the valve chamber 11 of the valve body 1, one end of the spring 5 abuts against the end cap 4, and the spring 5 is provided on the side (right side) close to the working oil port a 13.

The valve core 2 is provided with a protruding section 21 and a recessed section 22.

The valve core 2 is slidably arranged in the valve cavity 11 of the valve body 1, and the outer wall of the valve core 2 is in sealing connection with the valve cavity 11 of the valve body 1. The left end of the valve core 2 is propped against the joint seat 3, and the right end of the valve core 2 is propped against the other end of the spring 5. The protruding section 21 of the valve core 2 is contacted and abutted with the inner wall of the valve cavity 11 and can slide left and right along the inner wall of the valve cavity 11. Under the action of the spring 5, the left end of the valve core 2 is propped against the joint seat 3, the working oil port A13 (A port) of the valve body 1 is communicated with the oil inlet 12 (P port) through the concave section 22 of the valve core 2, and the gap between the working oil port B14 (B port) of the valve body 1 and the oil inlet 12 of the valve body 1 is blocked by the convex section 21 of the valve core 2, so that the working oil port B14 is not communicated with the oil inlet 12 (P port).

The joint seat 3 is provided with a penetrating control oil port 31 (X port), and the control oil port 31 (X port) of the joint seat 3 is communicated with the valve cavity 11 of the valve body 1. The joint seat 3 is used for being connected with a control oil supply mechanism, the valve core 2 is pushed to slide to the right by control oil, after the valve core 2 slides to the right, the working oil port B14 (port B) and the oil inlet 12 (port P) of the valve body 1 are communicated through the concave section 21 of the valve core 2, and the working oil port A13 (port A) and the oil inlet 12 (port P) of the valve body 1 are blocked by the convex section 21 of the valve core 2, so that the working oil port A13 and the oil inlet 12 (port P) are not communicated.

Through the above, it is easy to find that, in the double-pump converging valve of this embodiment, by setting up valve body, case, joint seat, end cover and spring, the valve body is equipped with valve pocket, oil inlet, work hydraulic fluid port A and work hydraulic fluid port B, and joint seat and end cover set up respectively on the valve body, shutoff the valve pocket, case and spring set up in the valve pocket, and the both ends of case are held with joint seat and spring respectively, and the other end of spring is held with the end cover in the butt, and the joint seat is equipped with the control hydraulic fluid port. According to the double-pump converging valve, the valve core can slide left and right in the cavity of the valve body by adjusting the pressure of control oil and the elasticity of the spring, and the opening, closing and reversing of the oil inlet and the working oil port A or the working oil port B of the valve body are controlled. When the hydraulic system needs to control various actuating mechanisms, various flow and high flow and a single pump set can not meet the requirement of adding the pump set, the flow of the pump set can be converged through the connection of a plurality of double-pump converging valves with the original pump set and other pump sets, so that various flow and high flow are provided.

Alternatively, in the double pump converging valve in the present embodiment, the valve body 1 is provided with female screws at both left and right ends of the valve chamber 11.

External threads are arranged at one ends of the joint seat 3 and the end cover 4, and the joint seat 3 and the end cover 4 are respectively meshed with the left end and the right end of the valve body 1 and are connected with the valve body 1 through threads.

Optionally, in the double pump converging valve in this embodiment, the end cover 4 is provided with a through drain port 41 (Y port), and the drain port 41 of the end cover 4 is in communication with the valve cavity 11 of the valve body 1.

In the embodiment, the valve cavity of the valve body is communicated with the outside through the oil drain port of the end cover, hydraulic oil seeping from between the valve core and the valve body is discharged through the oil drain port of the end cover, the pressure between the end cover and the valve core is released, and smooth sliding of the valve core in the valve cavity is ensured.

Optionally, in the double-pump converging valve in this embodiment, a protruding column 23 is disposed at the right end of the valve core 2, and a groove is disposed at the inner end face of the end cover 4.

The spring 5 is arranged in the valve cavity 11 of the valve body 1, one end of the spring 5 is sleeved on the protruding column 23 of the valve core 2, and the other end of the spring 5 is embedded in the groove of the end cover 4, so that the spring 5 is kept stable in the valve cavity 11.

Optionally, in the double-pump converging valve in this embodiment, a plurality of mounting holes 15 are formed on the side wall of the valve body 1, so that the valve body 1 is convenient to mount and fix.

Example two

Fig. 4 is a schematic diagram of a hydraulic control system according to a second embodiment of the present utility model.

The hydraulic control system of the present embodiment includes: pump group, actuator, control oil supply mechanism, and double pump confluence valve as described in the above embodiment one.

The pump group includes: a first pump stack 61 and a second pump stack 62.

The executing mechanism comprises: a first actuator 71, a second actuator 72 and a third actuator 73.

The double pump confluence valve is equipped with two, includes: the first double-pump converging valve and the second double-pump converging valve.

The oil inlets (P ports) of the first and second double-pump confluence valves are connected with the output ends of the first and second pump groups 61 and 62, respectively, and the control oil ports (X ports) of the first and second double-pump confluence valves are connected with the control oil supply mechanism, respectively.

The first double-pump confluence valve has an operating port A (port A) connected to the first actuator 71, the second double-pump confluence valve has an operating port A (port A) connected to the third actuator 73, and the first double-pump confluence valve and the second double-pump confluence valve have an operating port B (port B) connected to the second actuator 72.

Of course, it will be apparent to those skilled in the art that: the number of the double-pump converging valves and the pump groups can be continuously added according to the requirement.

Further, the hydraulic control system in this embodiment further includes: and the oil tank 8 is connected.

The oil drain ports (Y ports) of the first double-pump converging valve and the second double-pump converging valve are respectively connected and communicated with the oil receiving tank 8, so that leaked oil of the first double-pump converging valve and the second double-pump converging valve is collected into the oil receiving tank 8.

The hydraulic control system of the utility model has the following working principle:

when the hydraulic control system needs to control the first executing mechanism, the first pump group is started, the oil supply mechanism is controlled to be closed, and the port A of the first double-pump converging valve supplies oil to the first executing mechanism.

When the hydraulic control system needs to control the third actuating mechanism, the second pump group is started, the oil supply mechanism is controlled to be closed, and the port A of the second double-pump converging valve supplies oil to the third actuating mechanism.

When the hydraulic control system needs to control the second actuating mechanism (high flow), the first pump group and the second pump group are started simultaneously, the oil supply mechanism is controlled to be started, the control oil enables the two double-pump converging valves to change direction, hydraulic oil enters the port B from the port P, and converging is completed in the hydraulic system, so that high flow is obtained, and the port B of the first double-pump converging valve and the port B of the second double-direction converging valve supply oil to the second actuating mechanism simultaneously.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact between the first feature and the second feature, or an indirect contact between the first feature and the second feature through an intervening medium.

Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is at a lower level than the second feature.

In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; 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 or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (7)

1. A dual pump junction valve, comprising: the valve comprises a valve body, a valve core, a joint seat, an end cover and a spring;

the valve body is provided with a valve cavity;

the valve cavity axially penetrates through the valve body, and the connector seat and the end cover are respectively arranged at two sides of the valve body and used for sealing the valve cavity;

the side wall of the valve body is provided with an oil inlet, a working oil port A and a working oil port B;

the oil inlet, the working oil port A and the working oil port B are respectively communicated with the valve cavity, the working oil port A and the working oil port B are respectively positioned at two sides of the oil inlet, the oil inlet is used for being connected with a pump set, and the working oil port A and the working oil port B are used for being connected with an executing mechanism;

the spring is arranged in the valve cavity and is propped against the end cover;

the valve core is provided with a convex section and a concave section;

the valve core is slidably arranged in the valve cavity, two ends of the valve core are respectively propped against the joint seat and the spring, and the protruding section is propped against the inner wall of the valve cavity and used for blocking the communication between the working oil port B and the oil inlet;

the valve core is characterized in that the connector seat is provided with a control oil port, the control oil port is communicated with the valve cavity, the connector seat is used for being connected with a control oil supply mechanism, control oil is used for pushing the valve core to slide, the valve core is used for enabling the working oil port B to be communicated with the oil inlet and blocking the working oil port A from being communicated with the oil inlet when sliding.

2. The double pump junction valve of claim 1 wherein said valve body has internal threads at both ends of said valve cavity;

the joint seat and the end cover are provided with external threads which are respectively meshed with the internal threads of the valve body.

3. The dual pump junction valve of claim 1 wherein said end cap is provided with an oil drain port, said oil drain port being in communication with said valve chamber.

4. The dual pump junction valve of claim 1 wherein said spool is provided with a protruding post and said end cap is provided with a recess;

the spring is sleeved on the protruding column and embedded in the groove.

5. The dual pump junction valve of claim 1 wherein said valve body is provided with a plurality of mounting holes.

6. A hydraulic control system, comprising: a pump unit, an actuator, a control oil supply mechanism, and the double pump confluence valve according to claim 3;

the pump set comprises: a first pump group and a second pump group;

the actuator comprises: the first executing mechanism, the second executing mechanism and the third executing mechanism;

the double pump confluence valve includes: the first double-pump converging valve and the second double-pump converging valve;

the oil inlets of the first double-pump converging valve and the second double-pump converging valve are respectively connected with the first pump group and the second pump group, and the control oil ports are respectively connected with the control oil supply mechanism;

the working oil port A of the first double-pump converging valve is connected with the first executing mechanism, the working oil port A of the second double-pump converging valve is connected with the third executing mechanism, and the working oil ports B of the first double-pump converging valve and the second double-pump converging valve are connected with the second executing mechanism.

7. The hydraulic control system of claim 6, further comprising: the oil tank is connected;

and oil drainage ports of the first double-pump converging valve and the second double-pump converging valve are respectively connected with the oil receiving tank.