Diversion valve structure

Abstract

The utility model discloses a conversion valve structure which comprises a valve body and a valve core, a cavity is defined in the valve body, a plurality of liquid outlets communicated with the cavity are formed in the valve body, and a liquid inlet communicated with the cavity is further formed in the valve body. The valve element is arranged to rotate around the axis of the liquid inlet, the butt joint outlet is aligned with any one of the liquid outlets after the valve element rotates, a synchronous rod is further arranged on the outer wall of the valve element along the axis, the synchronous rod extends out of the valve body, and the butt joint outlet is aligned with any one of the liquid outlets after the valve element rotates. The part, located outside the valve body, of the synchronous rod is further fixedly connected with a beacon, and the beacon points to the direction of the butt joint outlet. The technical scheme has the beneficial effects that the arranged beacon rotates along with the rotation of the valve core, and the indicating direction of the beacon is the current opening direction of the valve, so that an operator can simply and clearly know the state of the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a structure of a steering valve. Background Art

[0002] A valve is a control component in a fluid delivery system and has functions such as cut-off, regulation, diversion, prevention of backflow, pressure stabilization, flow splitting or overflow pressure relief. Valves used in fluid control systems range from the simplest stop valve to various valves used in extremely complex automatic control systems, and their varieties and specifications are quite numerous. In order to change the flow direction of a fluid, a steering valve is usually used for control. The steering valves in the prior art often achieve regulation by the rotation of a rotating shaft. Such a steering valve can bear limited pressure, and it is very difficult to determine the current regulation direction of the valve during use, which has certain dangers. Content of the Utility Model

[0003] Aiming at the defects in the prior art, the utility model provides a structure of a steering valve, which can bear greater pressure, and can visually observe the current valve state, and is safer.

[0004] The technical solution provided by the utility model is: a structure of a steering valve, comprising:

[0005] A valve body, a cavity is defined in the valve body, a plurality of liquid outlets communicated with the cavity are arranged on the valve body, and a liquid inlet communicated with the cavity is further arranged on the valve body;

[0006] A valve core, the valve core is arranged in the cavity, a channel is constructed in the valve core, a docking inlet is arranged at the first end of the valve core corresponding to the channel, the docking inlet is communicated with the liquid inlet, a docking outlet is arranged at the second end of the valve core corresponding to the channel, the valve core is arranged to rotate around the axis of the liquid inlet, and the docking outlet is aligned with any one of the plurality of liquid outlets after the valve core rotates. A synchronizing rod is further arranged on the outer wall of the valve core along the axis, the synchronizing rod extends out of the valve body, and a pointing mark is fixedly connected to the part of the synchronizing rod located outside the valve body, and the pointing mark points to the direction of the docking outlet.

[0007] The beneficial effect of the above technical solution is: the provided pointing mark rotates along with the rotation of the valve core, and the indicating direction of the pointing mark is the current opening direction of the valve, which can enable an operator to simply and clearly know the state of the valve.

[0008] Further, the valve body comprises a first shell and a second shell which are butted together, the plurality of liquid outlets are all arranged on the first shell, the liquid inlet is opened on the second shell, and a fastener is arranged at the butting part of the first shell and the second shell.

[0009] Furthermore, a cylinder is extended from the position of the valve core corresponding to the docking inlet, the center line of the cylinder coincides with the axis, the cylinder is hollow, the cylinder rotatably fits in the cavity, and a drive assembly is also provided on the periphery of the cylinder, the drive assembly includes a meshing worm gear and worm.

[0010] Furthermore, the end of the second shell away from the first shell is also connected to the third shell, and the second shell and the third shell further define an installation cavity for accommodating the worm gear, and the side wall of the installation cavity is provided with a notch for the worm gear and the worm to mesh.

[0011] Furthermore, the portion of the valve core located in the first shell is hemispherical, the portion of the valve core connected to the cylinder is constructed with a plane, a first bearing is provided on the cylinder corresponding to the joint between the first shell and the second shell, one side of the first bearing is pressed against the plane, and a second bearing and a third bearing are provided on the cylinder corresponding to the position of the installation cavity, and the second bearing and the third bearing sandwich the worm gear.

[0012] Furthermore, an extension tube is provided on the first shell at a position corresponding to the liquid outlet.

[0013] Furthermore, the third shell is also constructed with a variable diameter section, the diameter of which gradually decreases toward a position away from the second shell, and one end of the variable diameter section with a smaller diameter is also connected to a straight section, the diameter of which is equal to the diameter of the channel of the valve core.

[0014] Furthermore, a clearance hole is provided on the first housing at a position corresponding to the extending position of the synchronization rod, and a rotating seal is also provided in the clearance hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the embodiment of the utility model after removing the first shell and the second shell;

[0019] Figure 4Schematic diagram of the spool and drive assembly in the embodiment of the present utility model;

[0020] Figure 5 Cross-sectional view of the spool and drive assembly in the embodiment of the present utility model.

[0021] Reference numerals: valve body 100, liquid outlet 102, liquid inlet 103, first housing 110, extension pipe 111, second housing 120, installation cavity 121, flange 122, notch 123, third housing 130, reduced-diameter section 131, sealing groove 140, spool 200, channel 201, docking inlet 203, docking outlet 202, cylinder 210, first bearing 211, second bearing 212, third bearing 213, synchronizing rod 220, pointer 221, worm gear 300, worm 301, bolt 400. Detailed implementation manners

[0022] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the drawings. The following embodiments are only used to illustrate the technical solution of the present utility model more clearly, and thus are only examples and cannot be used to limit the protection scope of the present utility model.

[0023] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present utility model belongs.

[0024] Such as Figures 1-5As shown in the figure, this embodiment provides a steering valve structure, including a valve body 100 and a valve core 200. A cavity is defined within the valve body 100. The valve body 100 is provided with a plurality of liquid outlets 102 communicating with the cavity. The number of liquid outlets 102 can be two or three. If there are two liquid outlets 102, they are arranged oppositely; if there are three liquid outlets 102, they are evenly arranged circumferentially around the outside of the valve body 100. The valve body 100 is further provided with a liquid inlet 103 communicating with the cavity. The liquid inlet 103 is used to guide liquid into the cavity, and the liquid entering the cavity can be discharged from the liquid outlets 102. In order to selectively discharge the liquid entering the cavity, the valve core 200 is arranged within the cavity. A channel 201 is constructed within the valve core 200. A docking inlet 203 is provided at the first end of the valve core 200 corresponding to the channel 201, and the docking inlet 203 communicates with the liquid inlet 103. A docking outlet 202 is provided at the second end of the valve core 200 corresponding to the channel 201. Liquid enters through the docking inlet 203 of the valve core 200 and is discharged from the docking outlet 202. When the valve core 200 does not move, the path of the liquid within the valve body 100 remains unchanged. In order to discharge the liquid from any one of the multiple liquid outlets 102, the valve core 200 is set to rotate around the axis of the liquid inlet 103. After the valve core 200 rotates, the docking outlet 202 aligns with any one of the multiple liquid outlets 102. That is to say, the liquid outlet 102 to which the docking outlet 202 of the valve core 200 is turned and aligned is the steering direction of the steering valve. A synchronizing rod 220 is further arranged along the axis on the outer wall of the valve core 200. The synchronizing rod 220 extends out of the valve body 100, and a pointer 221 is fixedly connected to the part of the synchronizing rod 220 located outside the valve body 100. The pointer 221 points in the direction of the docking outlet 202. Since the valve core 200 is located inside the valve body 100 and is blocked by the valve body 100 and not visible from the outside, at this time, just look at the direction of the pointer 221.

[0025] In the above technical solution, the provided pointer 221 rotates with the rotation of the valve core 200, and the indicating direction of the pointer 221 is also the current opening direction of the valve, which can enable the operator to simply and clearly know the state of the valve. Before adjusting the steering valve, the steering direction of the current steering valve can be obtained through the pointer 221 first, and then it can be determined whether adjustment is needed. Further, if adjustment is required, it can also be determined whether the adjustment is in place through the pointer 221. Specifically, during adjustment, observe the direction of the pointer 221 until the pointer 221 aligns with the target adjustment direction, and then the adjustment action can be stopped.

[0026] In some embodiments, such as Figures 1-3, the valve body 100 includes a first housing 110 and a second housing 120 that are butted together. The first housing 110 and the second housing 120 form a cavity after being fastened. A plurality of liquid outlets 102 are all arranged on the first housing 110, and the liquid inlet 103 is opened on the second housing 120. For the convenience of disassembly and maintenance, fasteners are provided at the butting part of the first housing 110 and the second housing 120. Specifically, flanges 122 are provided on the surfaces of the first housing 110 and the second housing 120 that are in contact with each other. The flanges 122 extend radially outward from the housing, and corresponding fixing holes are formed on the flanges 122. By passing bolts 400 through the fixing holes of the two housings, the two housings can be fixed together. More specifically, the fixing holes of the two housings can both be through holes, and the bolts 400 are locked by nuts after passing through. It can also be that the fixing holes on the first housing 110 are threaded holes, and those on the second housing 120 are through holes. After the bolts 400 pass through the through holes of the second housing 120, they are fastened to the threaded holes of the first housing 110.

[0027] In some embodiments, such as Figures 2-5 , to facilitate the control of the rotation of the valve core 200, a cylinder 210 is extended and provided at the position of the valve core 200 corresponding to the butting inlet 203. The center line of the cylinder 210 coincides with the axis, and when the cylinder 210 rotates, it coincides with the rotation axis of the valve core 200. The cylinder 210 is hollow, and the hollow cylinder 210 can guide the liquid into the valve core 200. After the cylinder 210 is provided, the inlet of the cylinder 210 is the butting inlet 203 of the valve core 200, that is, the liquid will flow through the butting inlet 203 and enter the channel 201 of the valve core 200 after passing through the cylinder 210. The cylinder 210 is rotationally fitted in the cavity, and the cavity can limit the axial movement of the cylinder 210. The fixed connection between the cylinder 210 and the valve core 200 can also ensure that the cylinder 210 will not move axially along it. To drive the cylinder 210 more conveniently, a driving assembly is further provided on the outer periphery of the cylinder 210. The driving assembly includes a meshing worm wheel 300 and a worm 301. The worm 301 drives the worm wheel 300 to drive the rotation of the cylinder 210. The cooperation of the worm wheel 300 and the worm 301 also has a self-locking function to prevent the adjusted position from changing.

[0028] In some embodiments, such as Figures 1-2, or for the convenience of maintenance, a third housing 130 is also docked at one end of the second housing 120 away from the first housing 110. The second housing 120 and the third housing 130 also define an installation cavity 121 for accommodating the worm gear 300. A notch 123 for the worm gear 300 and the worm 301 to mesh with each other is formed on the side wall of the installation cavity 121. The second housing 120 and the third housing 130 are detachably connected. When the drive assembly needs to be maintained, the third housing 130 can be detached from the second housing 120, so that the worm gear 300 is exposed, and subsequent maintenance operations can be carried out, including replacement, lubrication, etc. The worm 301 can be connected to a motor for driving or connected to a handwheel for manual operation. The connection structure between the second housing 120 and the third housing 130 can also be the same as the connection structure between the first housing 110 and the second housing 120. That is, bolts 400 are also used for connection.

[0029] In some embodiments, such as Figure 2 , 4 , 5, the part of the valve core 200 located in the first housing 110 is hemispherical, and the part of the valve core 200 connecting the cylinder body 210 is constructed with a plane. A first bearing 211 is arranged on the cylinder body 210 corresponding to the docking position of the first housing 110 and the second housing 120. One side of the first bearing 211 abuts against the plane. Second bearings 212 and third bearings 213 are arranged on the cylinder body 210 corresponding to the position of the installation cavity 121. The second bearings 212 and the third bearings 213 sandwich the worm gear 300. The first bearing 211, the second bearing 212 and the third bearing 213 are all thrust bearings.

[0030] In some embodiments, such as Figures 1-3 , an extension pipe 111 is arranged on the first housing 110 corresponding to the position of the liquid outlet 102. The extension pipe 111 is used to connect an external device (not shown in the figure).

[0031] In some embodiments, such as Figures 1-2 , the third housing 130 is also constructed with a reduced-diameter section 131. The diameter of the reduced-diameter section 131 gradually decreases towards the position away from the second housing 120. One end with a smaller diameter of the reduced-diameter section 131 is also connected with a straight section, and the diameter of the straight section is equal to the diameter of the channel 201 of the valve core 200.

[0032] In some embodiments, such as Figure 2, a relief hole is provided at a position on the first housing 110 corresponding to the extension of the synchronization rod 220, and a rotary seal is also provided in the relief hole. Further, rotary seals are provided at all positions where leakage may occur between the valve core 200 and the valve body 100. For example, the contact surface between the first housing 110 and the second housing 120 is the first joint surface, and rotary seals are provided above and below the valve core 200 corresponding to the first joint surface. The first joint surface is located in the area between the two rotary seals, and there is a gap between the two rotary seals and the first joint surface. The contact surface between the second housing 120 and the third housing 130 is the second joint surface, and rotary seals are also provided above and below the valve core 200 corresponding to the second joint surface. The second joint surface is located in the area between the two rotary seals, and there is a gap between the two rotary seals and the second joint surface. These rotary seals include seal grooves 140 provided on the inner wall of the cavity, and sealing rings are installed in the seal grooves 140. There are two adjacent seal grooves 140 for the rotary seal at one place.

[0033] In the description of the present application, it should be understood that the terms in the present application are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0034] In the present application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] In the description of the present utility model, a large number of specific details are illustrated. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, systems and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered by the scope of the claims and the specification of the present utility model.

Claims

1. A steering valve structure, characterized in that, Comprising: A valve body (100), a cavity is defined within the valve body (100), a plurality of liquid outlets (102) communicating with the cavity are provided on the valve body (100), and a liquid inlet (103) communicating with the cavity is further provided on the valve body (100); A valve core (200), the valve core (200) is arranged within the cavity, a channel (201) is constructed within the valve core (200), a docking inlet (203) corresponding to the first end of the channel (201) is provided on the valve core (200), the docking inlet (203) communicates with the liquid inlet (103), a docking outlet (202) corresponding to the second end of the channel (201) is provided on the valve core (200), the valve core (200) is arranged to rotate around the axis of the liquid inlet (103), the docking outlet (202) aligns with any one of the plurality of liquid outlets (102) after the valve core (200) rotates, a synchronizing rod (220) is further arranged along the axis on the outer wall of the valve core (200), the synchronizing rod (220) extends out of the valve body (100), and a direction indicator (221) is fixedly connected to the part of the synchronizing rod (220) outside the valve body (100), and the direction indicator (221) points to the direction of the docking outlet (202).

2. The steering valve structure according to claim 1, characterized in that, The valve body (100) includes a first housing (110) and a second housing (120) docked together, the plurality of liquid outlets (102) are all arranged on the first housing (110), the liquid inlet (103) is opened on the second housing (120), and fasteners are provided at the docking part of the first housing (110) and the second housing (120).

3. The steering valve structure according to claim 2, characterized in that, A cylinder (210) is extended and provided at the position of the valve core (200) corresponding to the docking inlet (203), the center line of the cylinder (210) coincides with the axis, the cylinder (210) is hollow, the cylinder (210) is rotationally fitted within the cavity, and a driving assembly is further provided on the outer periphery of the cylinder (210), and the driving assembly includes a meshing worm wheel (300) and a worm (301).

4. A steering valve structure according to claim 3, characterized in that, A third housing (130) is further docked at one end of the second housing (120) away from the first housing (110), and the second housing (120) and the third housing (130) further define an installation cavity (121) for accommodating the worm wheel (300), and a notch (123) for meshing the worm wheel (300) and the worm (301) is opened on the side wall of the installation cavity (121).

5. A steering valve structure according to claim 4, characterized in that, The portion of the valve core (200) located in the first shell (110) is hemispherical, and the portion of the valve core (200) connected to the cylinder (210) is constructed with a plane. A first bearing (211) is provided on the cylinder (210) at a joint corresponding to the first shell (110) and the second shell (120), and one side of the first bearing (211) is pressed against the plane. A second bearing (212) and a third bearing (213) are provided on the cylinder (210) at a position corresponding to the installation cavity (121), and the second bearing (212) and the third bearing (213) sandwich the worm gear (300).

6. The steering valve structure according to claim 2, wherein An extension tube (111) is provided on the first shell (110) at a position corresponding to the liquid outlet (102).

7. A steering valve structure according to claim 4, characterized in that, The third housing (130) is also configured with a reducing section (131), the diameter of which gradually decreases toward a position away from the second housing (120), and a straight section is connected to one end of the reducing section (131) with a smaller diameter, the diameter of which is equal to the diameter of the channel (201) of the valve core (200).

8. A steering valve structure according to claim 2, characterized in that, A clearance hole is provided on the first housing (110) at a position corresponding to the extending portion of the synchronization rod (220), and a rotating seal is also provided in the clearance hole.

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