Valve body and hydraulic control water valve

Abstract

The utility model provides a valve body and a hydraulic control water valve, the valve body comprises a valve sleeve and a containing cavity, one end of the valve sleeve is provided with a hydraulic control port, the side wall of the valve sleeve is provided with at least one first liquid passing port and at least one second liquid passing port, the containing cavity penetrates through the valve sleeve, and the hydraulic control port is communicated with the containing cavity. The hydraulic control opening is communicated with the first liquid passing opening and the second liquid passing opening through the containing cavity, and a first sealing part used for sealing a cavity between the first liquid passing opening and the second liquid passing opening is arranged on the inner side of the valve sleeve. According to the valve body and the hydraulic control water valve provided by the utility model, the sealing surface is directly formed on the valve sleeve, so that the processing difficulty of high-precision dimensional tolerance of a matching surface in the valve body can be reduced, the run-out tolerance of the matching of the valve core is guaranteed, the product is more stable, and the batch production cost can be further reduced.

Description

Technical Field

[0001] The utility model relates to the field of mining machinery, in particular to a valve body and a hydraulically controlled water valve. Background Art

[0002] A hydraulically controlled water valve is a valve that relies on external control of fluid pressure to allow reverse flow of a one-way valve. This type of structural valve is widely used in coal mine main engine water system spray or hydraulic support equipment for engineering machinery.

[0003] Existing hydraulically controlled water valves usually include components such as a valve body, a valve core, and a sealing ring; wherein the valve body is a hollow cylindrical structure, a valve stem is mounted in the valve body, one end of the valve stem passes through the valve seat, wherein the valve body and the sealing ring are pressed together to achieve interference fit, and then the valve seat and the valve core and valve stem are used to achieve sealing; in order to ensure that the one-way valve does not leak in the reverse direction, the valve core and the piston ring need to be hard-sealed, but since the piston ring is pressed into the valve body hole by a press machine with a guiding tool, the press-fitting will cause the assembled sealing ring to have poor coaxiality with the valve body hole, resulting in poor sealing between the sealing ring and the valve core, etc.

[0004] Therefore, in the prior art, there are technical problems that the press-fitting of the piston ring leads to poor coaxiality between the sealing ring and the inner hole of the valve body, and poor sealing performance between the sealing ring and the valve core. Utility Model Content

[0005] The main purpose of the utility model is to provide a valve body and a hydraulically controlled water valve to solve the technical problems in the prior art that the press-fitting of the piston ring leads to poor coaxiality between the sealing ring and the inner hole of the valve body and poor sealing performance between the sealing ring and the valve core.

[0006] In order to achieve the above-mentioned purpose, one aspect of the utility model provides a valve body, which includes a valve sleeve and a accommodating cavity, a liquid control port is arranged at one end of the valve sleeve, at least one first liquid port and at least one second liquid port are arranged on the side wall of the valve sleeve, the accommodating cavity passes through the valve sleeve, the liquid control port is connected with the first liquid port and the second liquid port through the accommodating cavity, and a first sealing portion for closing the cavity between the first liquid port and the second liquid port is arranged on the inner side of the valve sleeve.

[0007] Furthermore, a step structure is provided on the inner side of the valve sleeve, the step structure is located between the first liquid passage opening and the second liquid passage opening, and the first sealing portion is formed at the diameter change portion of the step structure.

[0008] Further, the first sealing portion is a first abutting surface that is arranged obliquely relative to the valve sleeve axis.

[0009] Furthermore, the accommodating chamber includes a first chamber, a second chamber, a third chamber and a fourth chamber that are connected in sequence, wherein the first chamber is directly connected to the hydraulic control port, and the cross-sectional areas of the first chamber and the second chamber are different.

[0010] Furthermore, the valve body further comprises an air vent, and at least a portion of the air vent is communicated with the first chamber.

[0011] Further, the first liquid passage port is communicated with the third chamber, the second liquid passage port is communicated with the fourth chamber, and the first sealing portion is formed between the third chamber and the fourth chamber.

[0012] Furthermore, the valve sleeve is an integrally formed structure.

[0013] Another aspect of the utility model provides a hydraulically controlled water valve, comprising a valve core and a valve body as described in any one of the above items, wherein the valve core is installed in the valve body and can move axially along the valve body.

[0014] Furthermore, the valve core has a protrusion, at least a portion of which extends radially outwardly along the valve core, and a second abutment surface is provided on the protrusion, and the second abutment surface can abut against the first sealing portion to achieve closing of the cavity between the first liquid outlet and the second liquid outlet.

[0015] Furthermore, the protrusion includes a first section and a second section, wherein the first section extends outward in the radial direction of the valve core, the second section is connected to the first section, and extends from the first section along the axial direction of the valve core toward a side away from the hydraulic control port, and the second abutment surface is formed on a surface away from the core shaft at the intersection of the first section and the second section.

[0016] By applying the valve body and hydraulically controlled water valve provided by the utility model, a first sealing portion for closing the cavity between the first liquid port and the second liquid port is arranged on the inner side of the valve sleeve, so that the first sealing portion can cooperate with the valve core assembly located inside the valve sleeve to achieve sealing between the internal chambers of the valve sleeve. By directly forming a sealing surface on the valve sleeve, the difficulty of processing the high-precision dimensional tolerance of the matching surface in the valve body can be reduced, the runout tolerance of the valve core matching can be guaranteed, the product can be made more stable, and the mass production cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1A schematic structural diagram of a valve body according to the utility model is shown;

[0019] Figure 2 The structure diagram of the hydraulically controlled water valve according to the utility model is shown;

[0020] Figure 3 The hydraulic principle diagram of the hydraulically controlled water valve according to the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Valve sleeve; 11. Liquid control port; 12. First liquid port; 13. Second liquid port; 14. First sealing portion; 15. Ventilation port; 16. Ventilation plug; 20. Accommodating chamber; 21. First chamber; 22. Second chamber; 23. Third chamber; 24. Fourth chamber; 30. Valve core; 31. Protrusion; 311. First section; 312. Second section; 40. Cover plate; 50. Spring; 60. Valve seat; 70. Open ring; 80. Y-type sealing ring. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0026] In order to solve the technical problems in the prior art that the press-fitting of the piston ring leads to poor coaxiality between the sealing ring and the inner hole of the valve body and poor sealing performance between the sealing ring and the valve core, the utility model provides a valve body and a hydraulically controlled water valve.

[0027] Figure 1 The structure diagram of the valve body of the utility model is shown in FIG. Figure 1As shown, the utility model provides a valve body, which includes a valve sleeve 10 and an accommodating cavity 20 for accommodating a valve core 30, a hydraulic control port 11 is provided at one end of the valve sleeve 10, and at least one first liquid passage port 12 and at least one second liquid passage port 13 are provided on the side wall of the valve sleeve 10, and the valve core 30 is controlled to move in the accommodating cavity 20 by controlling the hydraulic control port 11, so as to control the opening and closing of the first liquid passage port 12 and the second liquid passage port 13; the accommodating cavity 20 passes through the valve sleeve 10, and the hydraulic control port 11 is connected with the first liquid passage port 12 and the second liquid passage port 13 through the accommodating cavity 20, and a first sealing portion 14 for closing the cavity between the first liquid passage port 12 and the second liquid passage port 13 is provided on the inner side of the valve sleeve 10, and the first sealing portion 14 can cooperate with the valve core 30 to achieve sealing between the internal chambers of the valve sleeve 10.

[0028] By applying the valve body provided by the utility model, a first sealing portion 14 for closing the cavity between the first liquid port 12 and the second liquid port 13 is provided on the inner side of the valve sleeve 10, so that the first sealing portion 14 can cooperate with the valve core 30 located inside the valve sleeve 10 to achieve sealing between the internal chambers of the valve sleeve 10. By directly forming a sealing surface on the valve sleeve 10, the difficulty of processing the high-precision dimensional tolerance of the matching surface in the valve body can be reduced, the runout tolerance of the valve core 30 is guaranteed, the product is more stable, and the mass production cost can be reduced.

[0029] Furthermore, a stepped structure is provided inside the valve sleeve 10, and the stepped structure is located between the first liquid passage port 12 and the second liquid passage port 13, so that the valve sleeve 10 forms a chamber with different inner diameters between the first liquid passage port 12 and the second liquid passage port 13, and the first sealing portion 14 is formed at the position where the inner diameter of the stepped structure changes, so as to facilitate the cooperation with the valve core 30 component moving in the valve sleeve 10. Such a mechanical layout realizes external support through the stepped structure, has a simpler structure, and is more conducive to product processing.

[0030] Specifically, the first sealing portion 14 is a first abutting surface that is tilted relative to the axis of the valve sleeve 10. The first abutting surface is tilted to provide a larger abutting area. Such a setting is conducive to the formation of a sealing pair between the valve core 30 assembly and the valve sleeve 10, and is convenient for further improving the sealing effect between the valve core 30 assembly and the valve sleeve 10.

[0031] Preferably, an angle of 70-90 degrees may be formed between the first abutting surface and the axis of the valve sleeve 10 , and the size of the angle may be set according to the requirement for the sealing area of ​​the valve sleeve 10 .

[0032] In order to reduce the number of assembly steps, the valve sleeve 10 preferably adopts an integrally formed structure. The integrally formed setting can not only reduce the number of parts, but also further ensure the coaxiality of the components in the valve sleeve 10, reduce the level of machining accuracy requirements for the inner and outer pipe walls, effectively reduce the cumulative error, and thus improve the qualified rate of the valve core 30 assembly.

[0033] In this embodiment, if Figure 2 As shown, the accommodating chamber 20 includes a first chamber 21, a second chamber 22, a third chamber 23 and a fourth chamber 24 which are connected in sequence, wherein the first chamber 21 is directly connected to the hydraulic control port 11, and the cross-sectional areas of the first chamber 21 and the second chamber 22 are different, thereby forming a variable diameter structure on one side of the valve sleeve 10. Preferably, the cross-sectional area of ​​the first chamber 21 is larger than the cross-sectional area of ​​the second chamber 22, so that the valve core 30 can abut against the valve seat located in the first chamber 21 through the second chamber 22, thereby controlling the pressure applied to the valve seat through the hydraulic control port 11, thereby driving the valve core 30 to move in the valve sleeve 10.

[0034] Furthermore, the first liquid port 12 is communicated with the third chamber 23, the second liquid port 13 is communicated with the fourth chamber 24, and the first sealing portion 14 is formed between the third chamber 23 and the fourth chamber 24; and then the valve core 30 is driven to move by controlling the pressure on the valve seat, thereby enabling the third chamber 23 and the fourth chamber 24 to be opened and closed.

[0035] In order to facilitate the control of the chamber pressure in the valve sleeve 10, the valve body also includes an air vent 15, at least a portion of which is connected to the first chamber 21, so that the pressure in the first chamber 21 can be adjusted; a air plug 16 is installed on the air vent 15, and during use, the pressure in the first chamber can be adjusted by adjusting the air plug 16.

[0036] Another aspect of the utility model provides a hydraulically controlled water valve, comprising a valve core 30 and a valve body as described above, wherein the valve core 30 is installed in the valve body and can move axially along the valve body, thereby controlling the hydraulically controlled water valve by controlling the position of the valve core 30 in the valve body.

[0037] Furthermore, the valve core 30 has a protrusion 31, at least a portion of which extends radially outwardly along the valve core 30, and a second abutment surface is provided on the protrusion 31, which can abut against the first sealing portion 14, thereby achieving the closure of the cavity between the first liquid port 12 and the second liquid port 13.

[0038] Specifically, the protrusion 31 includes a first section 311 and a second section 312, wherein the first section 311 extends radially outward along the valve core 30, the second section 312 is connected to the first section 311, and extends from the first section 311 along the axial direction of the valve core 30 toward the side away from the hydraulic control port 11, and the second abutment surface is formed on the surface of the side away from the core shaft at the intersection of the first section 311 and the second section 312.

[0039] In this embodiment, the hydraulically controlled water valve also includes a cover plate 40 and a spring 50, wherein the cover plate 40 is connected to one end of the valve body away from the hydraulic control port 11, so that the fourth chamber 24 can be closed by the cover plate 40, and a receiving groove is formed between the first section 311 and the second section 312 of the protrusion 31 and the valve core 30, one end of the spring 50 abuts against the cover plate 40, and the other end of the spring 50 can be placed in the receiving groove, thereby providing the valve core 30 with an elastic force away from the cover plate 40.

[0040] Furthermore, the hydraulically controlled water valve also includes a valve seat 60, which is located in the first chamber 21 and connected to the valve core 30. An open ring 70 and a Y-shaped sealing ring 80 are respectively provided between the valve sleeve 10 and the valve core 30 and between the valve sleeve 10 and the valve seat 60. Such a layout can effectively prevent the hydraulic oil and the emulsion medium from communicating with each other, thereby contaminating the hydraulic system and causing the hydraulic system to fail.

[0041] In order to facilitate the assembly of the open ring 70 and the Y-shaped sealing ring 80 and prevent the open ring 70 and the Y-shaped sealing ring 80 from being cut and failing during the assembly process, a chamfer structure is further provided between the second chamber 22 and the third chamber 23, thereby further facilitating assembly.

[0042] like Figure 3 As shown, the hydraulically controlled one-way valve comprises a first liquid passage port A, a second liquid passage port B and an external control liquid circuit X, wherein when there is no pressurized oil in the external control liquid circuit X, the hydraulically controlled one-way valve works like an ordinary one-way valve, and the pressurized oil can only flow from the first liquid passage port A to the second liquid passage port B, and cannot flow in the reverse direction; when there is control pressure input to the external control liquid circuit X, the valve core moves leftward under the action of the pressurized oil, so that the second liquid passage port B is connected to the first liquid passage port A, and if the pressure of the second liquid passage port B is greater than the pressure of the first liquid passage port A, the oil can flow in the reverse direction.

[0043] In the hydraulically controlled water valve of the utility model, a control force is applied to the valve seat through the hydraulically controlled port 11. When the control force is greater than the elastic force applied by the spring 50 to the valve core 30, the valve core 30 compresses the spring 50 to move to the left, thereby realizing the connection between the first liquid port 12 and the second liquid port 13; at this time, if the pressure of the second liquid port 13 is greater than the pressure of the first liquid port 12, the oil will flow from the second liquid port 13 to the first liquid port 12, thereby realizing the reverse flow of the oil. The hydraulically controlled water valve of the utility model realizes the sealing between the second liquid port 13 and the first liquid port 12 by forming a sealing pair formed by a pressure surface on the valve body and the valve core 30, which can ensure the reverse sealing performance of the one-way valve, thereby improving the product quality.

[0044] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0045] 1. It effectively solves the technical problems in the prior art that the press-fitting of the piston ring leads to poor coaxiality between the sealing ring and the inner hole of the valve body, and poor sealing performance between the sealing ring and the valve core;

[0046] 2. Simple structure, easy installation, and reduced product cost.

[0047] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0050] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A valve body, characterized in that: The valve body comprises a valve sleeve (10) and a receiving cavity (20); a hydraulic control port (11) is arranged at one end of the valve sleeve (10); at least one first liquid passage port (12) and at least one second liquid passage port (13) are arranged on a side wall of the valve sleeve (10); the receiving cavity (20) passes through the valve sleeve (10); the hydraulic control port (11) is communicated with the first liquid passage port (12) and the second liquid passage port (13) through the receiving cavity (20); and a first sealing portion (14) for closing a cavity between the first liquid passage port (12) and the second liquid passage port (13) is arranged on the inner side of the valve sleeve (10); The accommodating chamber (20) comprises a first chamber (21), a second chamber (22), a third chamber (23) and a fourth chamber (24) which are connected in sequence, wherein the first chamber (21) is directly connected to the hydraulic control port (11), and the cross-sectional areas of the first chamber (21) and the second chamber (22) are different, and the valve body further comprises an air vent (15), and at least a portion of the air vent (15) is connected to the first chamber (21).

2. The valve body according to claim 1, characterized in that: A stepped structure is provided on the inner side of the valve sleeve (10), the stepped structure is located between the first liquid passage opening (12) and the second liquid passage opening (13), and the first sealing portion (14) is formed at the reduced diameter portion of the stepped structure.

3. The valve body according to claim 2, characterized in that: The first sealing portion (14) is a first abutment surface that is arranged obliquely relative to the axis of the valve sleeve (10).

4. The valve body according to claim 1, characterized in that: The first liquid passage port (12) is in communication with the third chamber (23), the second liquid passage port (13) is in communication with the fourth chamber (24), and the first sealing portion (14) is formed between the third chamber (23) and the fourth chamber (24).

5. The valve body according to claim 1, characterized in that: The valve sleeve (10) is an integrally formed structure.

6. A hydraulically controlled water valve, characterized in that: The invention comprises a valve core (30) and a valve body according to any one of claims 1 to 5, wherein the valve core (30) is installed in the valve body and can move axially along the valve body.

7. The hydraulically controlled water valve according to claim 6, characterized in that: The valve core (30) has a protrusion (31), at least a portion of which extends radially outwardly of the valve core (30), and a second abutment surface is provided on the protrusion (31), and the second abutment surface can abut against the first sealing portion (14) to achieve sealing of the cavity between the first liquid passage port (12) and the second liquid passage port (13).

8. The hydraulically controlled water valve according to claim 7, characterized in that: The protrusion (31) includes a first section (311) and a second section (312), wherein the first section (311) extends outwardly in the radial direction of the valve core (30), the second section (312) is connected to the first section (311), and extends from the first section (311) along the axial direction of the valve core (30) toward a side away from the hydraulic control port (11), and the second abutment surface is formed on a surface of a side away from the valve core (30) at the intersection of the first section (311) and the second section (312).

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