CN217301079U

CN217301079U - Stacked double one-way throttle valve for hydraulic system

Info

Publication number: CN217301079U
Application number: CN202220080320.2U
Authority: CN
Inventors: 牛壮; 赵宇峰
Original assignee: Wuxi Kairuide Fluid Technology Co ltd
Current assignee: Wuxi Kairuide Fluid Technology Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-08-26
Anticipated expiration: 2032-01-12

Abstract

The utility model provides a water pressure system is with two one-way choke valves of stack formula, including setting up the work position on the valve body, the work position includes the valve pocket, install the bush in the valve pocket, the bottom face of bush forms first passageway with the clearance of valve pocket bottom, be provided with second passageway and third passageway on the valve body, be provided with first connecting hole and second connecting hole on the lateral wall of bush, install the throttle valve core in the inner chamber of bush, be provided with the control part in the valve pocket, block up partial first connecting hole and second connecting hole through the drive throttle valve core of control part, when first passageway is intake, the aqueous medium builds pressure in the inboard of throttle valve core, extrapolates the throttle valve core, and the passageway between first connecting hole and the second connecting hole is opened completely, reaches the mesh of switching on; when water enters the second channel, pressure is built on the left side and the right side of the throttling valve core, and the throttling valve core is fixed, so that the purpose of one-way throttling is achieved.

Description

Stacked double one-way throttle valve for hydraulic system

Technical Field

The utility model relates to a hydraulic system is with two one-way choke valves of stack formula.

Background

The one-way throttle valve is widely applied to a speed regulation and delay loop of a hydraulic control system, and can be used as a one-way valve and a throttle valve. The steady-state hydrodynamic force is one of the key factors influencing the performance of the one-way throttle valve, not only determines the reversing resistance, but also influences the accurate control of the one-way throttle valve. However, in the hydraulic system, the aqueous medium cannot provide enough lubrication effect to the oil liquid during the circulation process. When conventional one-way throttle valve is applied to a water pressure system, the use effect cannot be guaranteed, the use effect is poor, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is because aqueous medium can't provide sufficient lubricated effect to fluid equally at the circulation in-process. When conventional one-way throttle valve was applied to hydraulic system, unable assurance result of use, the result of use is poor, and life is shorter, the utility model provides a hydraulic system solves above-mentioned problem with two one-way throttle valves of stack formula.

The utility model provides a technical scheme that its technical problem adopted is: a stacked double one-way throttle valve for a hydraulic system comprises a working position arranged on a valve body, wherein the working position comprises a valve cavity, the valve cavity is in a stepped hole arranged along the axial direction, a small-diameter section of the stepped hole is arranged in a leaning manner, a bushing is fixedly arranged in the small-diameter section, a first channel is formed by a gap between the bottom end surface of the bushing and the bottom of the stepped hole, a second channel and a third channel are arranged on the valve body, the second channel is communicated with the first channel through a fourth channel, a first connecting hole and a second connecting hole communicated with an inner cavity of the bushing are arranged on the side wall of the bushing, the first connecting hole is communicated with the second channel, the second connecting hole is communicated with the third channel, a throttle valve core is arranged in the inner cavity of the bushing, and the outer wall of the throttle valve core is sealed with the inner wall of the bushing, the large-diameter section of the stepped hole is provided with a control part, and the control part can drive the throttle valve core to move along the inner cavity of the lining.

Further: the control part comprises a control valve core and a plug arranged at the large-diameter section of the stepped hole, a threaded hole is formed in the plug, an external thread matched with the threaded hole is arranged on the control valve core, an inwards concave mounting hole is formed in the bottom end of the control valve core, a spring is arranged in the mounting hole, and the deformation force of the spring can push the throttle valve core to move towards the first channel; the tail portion of the throttling valve core is provided with a clamping table protruding outwards along the circumferential direction, an orifice of the mounting hole is provided with an inwards-concave mounting groove, a clamp spring is mounted in the mounting groove, and the clamping table is limited in the mounting hole by the clamp spring.

Further, the method comprises the following steps: the valve body is internally provided with a fifth channel, one end of the fifth channel is communicated with the large-diameter section of the stepped hole, the other end of the fifth channel is communicated with the third channel, the bottom end face of the control valve core is provided with an inwards concave connecting groove, and the connecting groove is communicated with the fifth channel.

Further: the valve body is provided with two working positions.

The utility model has the advantages that the utility model discloses hydraulic system is with two one-way choke valves of stack formula drives the throttle valve core through the control part and plugs up partial first connecting hole and second connecting hole, and when the first passageway was intake, aqueous medium established pressure in the inboard of throttle valve core, pushed the throttle valve core outward, and the passageway between first connecting hole and the second connecting hole is opened completely, reaches the mesh of switching on; when water enters the second channel, pressure is built on the left side and the right side of the throttling valve core, and the throttling valve core is fixed, so that the purpose of one-way throttling is achieved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is the structure schematic diagram of the stacked double one-way throttle valve for the hydraulic system of the present invention.

In the figure, the valve comprises a valve cavity 1, a valve cavity 2, a bushing 3, a first channel 4, a second channel 5, a third channel 6, a fourth channel 7, a first connecting hole 8, a second connecting hole 9, a throttling valve core 10, a control valve core 11, a plug 12, external threads 13, a mounting hole 14, a spring 15, a clamping table 16, a mounting groove 17, a clamping spring 18, a fifth channel 19 and a connecting groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

As shown in fig. 1, the utility model provides a two one-way choke valves of stack formula for hydraulic system, including setting up the work position on the valve body, the work position includes valve pocket 1, the shape of valve pocket 1 is the shoulder hole that sets up along the axial, the path section of shoulder hole leans on the interior setting, fixed mounting has bush 2 in the path section, the bottom face of bush 2 with the clearance between the shoulder hole bottom forms first passageway 3, be provided with second passageway 4 and third passageway 5 on the valve body, second passageway 4 is linked together with first passageway 3 through fourth passageway 6, be provided with first connecting hole 7 and second connecting hole 8 with the bush 2 inner chamber is linked together on the lateral wall of bush 2, first connecting hole 7 with second passageway 4 is linked together, second connecting hole 8 with third passageway 5 is linked together, the inner cavity of the bush 2 is internally provided with a throttle valve core 9, the outer wall of the throttle valve core 9 and the inner wall of the bush 2 are arranged in a sealing way, the large-diameter section of the stepped hole is provided with a control part, and the control part can drive the throttle valve core 9 to move along the inner cavity of the bush 2.

When the control part drives the throttle valve core 9 to block part of the first connecting hole 7 and the second connecting hole 8, and the first channel 3 is filled with water, the water medium builds pressure on the inner side of the throttle valve core 9, the throttle valve core 9 is pushed outwards, and the channel between the first connecting hole 7 and the second connecting hole 8 is completely opened, so that the conduction purpose is achieved; when water enters the second channel 4, pressure is built on the left side and the right side of the throttle valve core 9, the throttle valve core 9 is not moved, and the purpose of one-way throttling is achieved.

When the control part drives the throttle valve core 9 to move to the bottommost position, the throttle valve core 9 is attached to the first connecting hole 7 and the second connecting hole 8 in a sealing mode, when an aqueous medium enters from the second channel 4, the aqueous medium enters the first channel 3 through the fourth channel 6, pressure is generated on the bottom end face of the throttle valve core 9, when the pressure is larger than the acting force of the control part, the throttle valve core 9 moves outwards along the inner cavity of the lining 2 and is far away from the first connecting hole 7 and the second connecting hole 8, the first connecting hole 7 is communicated with the second connecting hole 8 through the inner cavity of the lining 2, and the aqueous medium flows out from the third channel 5. When the water medium enters from the third channel 5, the throttle valve core 9 is attached to the second connecting hole 8 in a sealing mode, so that the water medium cannot pass through, and the purpose of unidirectional flow interception is achieved.

The control part comprises a control valve core 10 and a plug 11 arranged at the large-diameter section of the stepped hole, a threaded hole is formed in the plug 11, an external thread 12 matched with the threaded hole is formed in the control valve core 10, an inwards concave mounting hole 13 is formed in the bottom end of the control valve core 10, a spring 14 is arranged in the mounting hole 13, and the deformation force of the spring 14 can push the throttle valve core 9 to move towards the first channel 3; the tail portion of the throttle valve core 9 is provided with a clamping table 15 protruding outwards along the circumferential direction, an orifice of the mounting hole 13 is provided with an inwards concave mounting groove 16, a clamp spring 17 is mounted in the mounting groove 16, and the clamping table 15 is limited in the mounting hole 13 by the clamp spring 17.

The deformation force of the spring 14 can push the throttle valve core 9 to move rightwards along the inner hole of the bushing 2, so that the throttle valve core 9 is in sealing fit with the first connecting hole 7 and the second connecting hole 8. The degree of installation of the throttle valve spool 9 in the bushing 2 can be adjusted by controlling the degree of installation of the external thread 12 on the valve spool 10 into the threaded hole, controlling the degree of opening of the first and second connection holes 7 and 8, and thus throttling. The arrangement of the clamping table 15 and the clamping spring 17 can limit the movement range of the throttle valve core 9, so that the throttle valve core 9 is prevented from blocking the first channel 3 too deeply.

A fifth passage 18 is arranged in the valve body, one end of the fifth passage 18 is communicated with the large-diameter section of the stepped hole, the other end of the fifth passage 18 is communicated with the third passage 5, a concave connecting groove 19 is arranged on the bottom end face of the control valve core 10, and the connecting groove 19 is communicated with the fifth passage 18. When the water medium enters from the third channel 5, the water medium enters the valve cavity 1 through the fifth channel 18 and the connecting groove 19 in sequence, and pressure is built on the left side and the right side of the throttle valve core 9, so that the purpose of pressure balance is achieved.

The valve body is provided with two working positions. The two working positions can be matched with other valve groups for use, so that more using purposes are achieved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a hydraulic system is with two one-way choke valves of stack formula which characterized in that: comprises a working position arranged on a valve body, the working position comprises a valve cavity (1), the valve cavity (1) is in a stepped hole shape arranged along the axial direction, the small-diameter section of the stepped hole is arranged in the inner side, a lining (2) is fixedly arranged in the small-diameter section, a gap between the bottom end surface of the bushing (2) and the bottom of the stepped hole forms a first channel (3), the valve body is provided with a second channel (4) and a third channel (5), the second channel (4) is communicated with the first channel (3) through a fourth channel (6), a first connecting hole (7) and a second connecting hole (8) which are communicated with the inner cavity of the lining (2) are arranged on the side wall of the lining (2), the first connecting hole (7) is communicated with the second channel (4), and the second connecting hole (8) is communicated with the third channel (5);

the throttling valve is characterized in that a throttling valve core (9) is installed in an inner cavity of the bushing (2), the outer wall of the throttling valve core (9) and the inner wall of the bushing (2) are arranged in a sealing mode, a control portion is arranged on a large-diameter section of the stepped hole, and the control portion can drive the throttling valve core (9) to move along the inner cavity of the bushing (2).

2. A stacked dual check throttle valve for hydraulic systems as defined in claim 1 wherein: the control part comprises a control valve core (10) and a plug (11) installed at the large-diameter section of the stepped hole, a threaded hole is formed in the plug (11), an external thread (12) matched with the threaded hole is formed in the control valve core (10), an inwards concave installation hole (13) is formed in the bottom end of the control valve core (10), a spring (14) is installed in the installation hole (13), and the deformation force of the spring (14) can push the throttle valve core (9) to move towards the first channel (3);

the throttle valve core (9) the afterbody be equipped with along the protruding card platform (15) of circumference, the drill way of mounting hole (13) is equipped with indent mounting groove (16), install jump ring (17) in mounting groove (16), jump ring (17) will card platform (15) restriction is in mounting hole (13).

3. A stacked dual check throttle valve for hydraulic systems as defined in claim 2 wherein: the valve body is internally provided with a fifth channel (18), one end of the fifth channel (18) is communicated with the large-diameter section of the stepped hole, the other end of the fifth channel is communicated with the third channel (5), the bottom end face of the control valve core (10) is provided with an inwards concave connecting groove (19), and the connecting groove (19) is communicated with the fifth channel (18).

4. A stacked dual check throttle valve for hydraulic systems as defined in claim 1 wherein: the valve body is provided with two working positions.