CN211924608U - Two-inlet and two-outlet flow control valve - Google Patents
Two-inlet and two-outlet flow control valve Download PDFInfo
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- CN211924608U CN211924608U CN202020191126.2U CN202020191126U CN211924608U CN 211924608 U CN211924608 U CN 211924608U CN 202020191126 U CN202020191126 U CN 202020191126U CN 211924608 U CN211924608 U CN 211924608U
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Abstract
The utility model belongs to the hydraulic component in the machinery trade, in particular to two advance two formula flow control valves. The one-way valve is characterized in that a first oil inlet and a second oil inlet are arranged on one side surface of the valve body, a throttling body is arranged above the one-way valve in the inner cavity of the working oil passage, two valve rod front pressure feedback holes are arranged on the outer circumference of the valve rod in parallel, the upper valve rod front pressure feedback hole is communicated with the second oil inlet, an unloading oil passage is arranged on the edge in the valve body and one side surface of the valve rod, the lower end head of the unloading oil passage is communicated with the valve rod cavity and is provided with a first oil inlet unloading oil passage, a second oil inlet unloading oil passage is arranged above the first oil inlet unloading oil passage and is communicated with the valve rod cavity, a first oil outlet is arranged above the working oil passage communicated with the. The rotation speed of the oil pump is not controlled. When the oil pump rotates at a low speed, the two oil inlets supply oil simultaneously, and when the oil pump rotates at a high speed, oil in the first oil inlet supplies oil to the system, and the second oil inlet shunts and unloads the oil without doing work.
Description
Technical Field
The utility model belongs to the hydraulic component in the machinery trade, in particular to two advance two formula flow control valves.
Background
In the field of automobile hydraulic at present, a large-displacement oil pump is driven by an engine directly, the output flow of an oil pump is the rotation speed n of an oil pump displacement QX engine, the requirement of a hydraulic system and the volume of oil liquid borne by the hydraulic system are certain, the hydraulic system is burdened by excessive flow, and the requirement of the hydraulic system cannot be met due to less flow. The traditional method is that the displacement of an oil pump is designed by taking the minimum required quantity as a representation, the oil pump is additionally provided with a flow control valve, and when the maximum oil liquid required quantity of a valve body is reached, the valve body is opened to enable redundant flow to flow back. There arises a problem that although the flow rate is controlled, the force for driving the oil pump is not reduced. Energy loss occurs, and the energy consumption loss of the traditional hydraulic system can not meet the social development requirement.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned technique not enough, provide a simple structure, control function is reliable, reduce two into two formula flow control valves of loss.
The utility model provides a technical scheme that technical problem adopted is: the two-inlet two-outlet flow control valve comprises a valve body, an oil outlet cover plate and a rear cover plate, and is characterized in that one side surface of the valve body is provided with a first oil inlet and a second oil inlet, the first oil inlet is communicated with a working oil passage, a one-way valve is arranged between the second oil inlet and the working oil passage, a throttle body is arranged above the one-way valve in an inner cavity of the working oil passage, a valve rod is arranged in the valve body and parallel to the working oil passage, a valve rod spring is arranged above the valve rod, the oil outlet cover plate is arranged above the valve body, the valve rod spring is connected in a groove in the oil outlet cover plate, a valve rod rear pressure feedback hole is arranged between a cavity of the valve rod mounted on the valve rod spring and the working oil passage, two valve rod front pressure feedback holes are arranged on the outer circumference of the valve rod in parallel, wherein the lower valve rod front pressure feedback hole is communicated with the first oil inlet, the lower end head of the unloading oil duct is communicated with the valve rod cavity and is provided with an oil inlet and unloading oil duct, an oil inlet and unloading oil duct is arranged above the oil inlet and unloading oil duct and is communicated with the valve rod cavity and is provided with an oil outlet II, the oil outlet cover plate is communicated with the working oil duct and is provided with an oil outlet II, and the back surface of the valve body, opposite to the oil inlet I and the oil inlet II, is provided with a back cover plate.
The utility model has the advantages that: the two-in two-out flow control valve is suitable for a double-acting oil pump and is not controlled to the rotating speed of the oil pump. When the oil pump rotates at a low speed, the two oil inlets supply oil simultaneously, and when the oil pump rotates at a high speed, the oil in the first oil inlet supplies oil to the system, and the shunting unloading in the second oil inlet does not work, so that the energy is saved, the cost is reduced, and the control valve is simple in structure and reliable in performance.
Drawings
The following description is made in detail by way of example with reference to the accompanying drawings.
Fig. 1 is an external structural view of a two-inlet and two-outlet flow control valve.
Fig. 2 is a sectional view taken along line a-a of fig. 1 rotated 180 degrees.
Fig. 3 is a sectional view taken along line B-B of fig. 1.
In the figure, 1-valve body; 1-1-oil inlet I; 1-2-oil inlet II; 1-3-valve stem front pressure feedback hole; 1-4-valve stem back pressure feedback orifice; 1-5-working oil ducts; 1-6-unloading oil channel; 1-7-oil inlet two unloading oil passage; 1-8-an unloading oil channel at the oil inlet; 2-oil outlet cover plate; 2-1-oil outlet I; 2-2-oil outlet II; 3-valve stem spring; 4-a valve stem; 5-a throttle body; 6-a one-way valve; 6-1-one-way valve steel ball; 6-2-one-way valve spring; 7-rear cover plate.
Detailed Description
In the embodiment, referring to the attached drawings 1-3, the two-inlet and two-outlet flow control valve is characterized in that an oil inlet I1-1 and an oil inlet II 1-2 are arranged on one side surface of a valve body 1, and the oil inlet I1-1 is communicated with a working oil passage 1-5 in the valve body 1. A one-way valve 6 is arranged between the second oil inlet 1-2 and the working oil duct 1-5, a one-way valve steel ball 6-1 is arranged at the left port in the cavity of the one-way valve 6, and a one-way valve spring 6-2 is arranged between the spherical surface of the one-way valve steel ball 6-1 and the inner wall of the right side of the one-way valve 6. A throttling body 5 is arranged above a one-way valve 6 in the inner cavity of the working oil duct 1-5, a valve rod cavity is arranged in the valve body 1 in parallel with the working oil duct 1-5, a valve rod 4 is arranged in the valve rod cavity, a valve rod spring 3 is arranged in the valve rod cavity above the valve rod 4, an oil outlet cover plate 2 is arranged above the valve body 1, and the valve rod spring 3 is connected in a groove in the oil outlet cover plate 2. A valve rod rear pressure feedback hole 1-4 is arranged between a cavity of a valve rod arranged on a valve rod spring 3 and a working oil passage 1-5, and two valve rod front pressure feedback holes 1-3 are arranged on the outer circumference of the valve rod 4. Wherein, the lower valve rod front pressure feedback hole 1-3 is communicated with the first oil inlet 1-1, and the upper valve rod front pressure feedback hole 1-3 is communicated with the second oil inlet 1-2. An unloading oil passage 1-6 is arranged on the edge in the valve body 1 and one side surface of the valve rod 4, an oil inlet one-unloading oil passage 1-8 is arranged in a cavity of the unloading oil passage 1-6 communicated with the valve rod 4, and an oil inlet two-unloading oil passage 1-7 is arranged in a cavity of the valve rod 4 above the oil inlet one-unloading oil passage 1-8. An oil outlet I2-1 is arranged on the oil outlet cover plate 2 and communicated with the working oil duct 1-5, and an oil outlet II 2-2 is arranged on the oil outlet cover plate 2 and communicated with the unloading oil duct 1-6. And a rear cover plate 7 is arranged on the opposite back surfaces of the first oil inlet 1-1 and the second oil inlet 1-2 in the front of the valve body 1.
The utility model discloses a theory of operation is: when the two-inlet and two-outlet flow control valve works, oil enters the valve body 1 from the first oil inlet 1-1 and the second oil inlet 1-2, the valve rod 4 is in a closed state at the moment, the oil in the second oil inlet 1-2 is combined with the oil in the first oil inlet 1-1 through the one-way valve 6, and flows out from the first oil outlet 2-1 through the throttling fluid 5 to supply oil to a system. When the flow of the first oil inlet 1-1 and the second oil inlet 1-2 is increased, a certain pressure difference is formed after the first oil inlet and the second oil inlet pass through the throttling body 5, the valve rod 4 is opened, oil in the first oil inlet 1-1 is still supplied to the system through the first oil outlet 2-1, and the oil in the second oil inlet 1-2 flows out of the second oil outlet 2-2, so that the consumption of the oil is reduced.
Claims (1)
1. A two-inlet two-outlet flow control valve comprises a valve body (1), an oil outlet cover plate (2) and a rear cover plate (7), and is characterized in that one side surface of the valve body (1) is provided with a first oil inlet (1-1) and a second oil inlet (1-2), the first oil inlet (1-1) is communicated with a working oil duct (1-5), a one-way valve (6) is arranged between the second oil inlet (1-2) and the working oil duct (1-5), a throttling body (5) is arranged above the one-way valve (6) in the inner cavity of the working oil duct (1-5), a valve rod (4) is arranged in the valve body (1) in parallel with the working oil duct (1-5), a valve rod spring (3) is arranged above the valve rod (4), the oil outlet cover plate (2) is arranged above the valve body (1), and the valve rod spring (3) is connected in a groove in the, a valve rod rear pressure feedback hole (1-4) is arranged between a cavity of a valve rod (4) installed on a valve rod spring (3) and a working oil channel (1-5), two valve rod front pressure feedback holes (1-3) are arranged on the outer circumference of the valve rod (4) in parallel, wherein the lower valve rod front pressure feedback hole (1-3) is communicated with a first oil inlet (1-1), the upper valve rod front pressure feedback hole (1-3) is communicated with a second oil inlet (1-2), an unloading oil channel (1-6) is arranged on the edge in the valve body (1) and one side surface of the valve rod (4), the lower end head of the unloading oil channel (1-6) is communicated with the cavity of the valve rod (4) and is provided with the first unloading oil inlet channel (1-8), the upper part of the first unloading oil inlet channel (1-8) is communicated with the cavity of the valve rod (4) and is provided with the second unloading oil channel (, an oil outlet I (2-1) is arranged above a working oil passage (1-5) communicated with the oil outlet cover plate (2), an oil outlet II (2-2) is arranged on the oil outlet cover plate (2) communicated with an unloading oil passage (1-6), and a rear cover plate (7) is arranged on the back surface of the front of the valve body (1) opposite to the oil inlet I (1-1) and the oil inlet II (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020191126.2U CN211924608U (en) | 2020-02-21 | 2020-02-21 | Two-inlet and two-outlet flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020191126.2U CN211924608U (en) | 2020-02-21 | 2020-02-21 | Two-inlet and two-outlet flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211924608U true CN211924608U (en) | 2020-11-13 |
Family
ID=73351201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020191126.2U Active CN211924608U (en) | 2020-02-21 | 2020-02-21 | Two-inlet and two-outlet flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211924608U (en) |
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2020
- 2020-02-21 CN CN202020191126.2U patent/CN211924608U/en active Active
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