CN216279405U - Stop valve - Google Patents

Stop valve Download PDF

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Publication number
CN216279405U
CN216279405U CN202122977800.7U CN202122977800U CN216279405U CN 216279405 U CN216279405 U CN 216279405U CN 202122977800 U CN202122977800 U CN 202122977800U CN 216279405 U CN216279405 U CN 216279405U
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CN
China
Prior art keywords
valve
cavity
adjusting screw
valve core
screw rod
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Active
Application number
CN202122977800.7U
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Chinese (zh)
Inventor
刘海波
单宇宽
李军亮
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Zhejiang Dunan Artificial Environment Co Ltd
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Zhejiang Dunan Artificial Environment Co Ltd
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Priority to CN202122977800.7U priority Critical patent/CN216279405U/en
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Abstract

The utility model provides a stop valve, which comprises a valve body, a valve cover, a valve core, an adjusting screw rod and a sealing ring, wherein the valve body is provided with a valve seat; the valve body is provided with a valve cavity with an opening at the top end of the valve body; the valve cover is arranged at the top end of the valve body and used for sealing the valve cavity, and a through hole is formed in the position, corresponding to the valve cavity, of the valve cover; the valve core is arranged in the valve cavity in a lifting and non-rotating manner and is provided with an inner cavity with an opening at the top end, and the cavity wall of the inner cavity is provided with an internal thread; one end of the adjusting screw rod is arranged in the valve cavity, the external thread of the adjusting screw rod is matched with the internal thread, the other end of the adjusting screw rod extends out of the valve cover through the through hole and is used as an operating end, and the adjusting screw rod is in limit connection with the valve cover through a limiting piece so that the adjusting screw rod can rotate relative to the valve cover and cannot lift; the sealing ring is sleeved on the part, corresponding to the valve cover, of the adjusting screw rod and used for forming sealing between the adjusting screw rod and the valve cover.

Description

Stop valve
Technical Field
The utility model relates to the technical field of valve equipment, in particular to a stop valve.
Background
The existing stop valve usually comprises a valve body, a valve core, a cover cap, an O-shaped ring, a clamp spring and the like, and the existing stop valve has the following defects: when the valve core needs to be adjusted, the cover cap needs to be detached firstly, the operation is complex, the efficiency is low, and the connection structure of the cover cap and the valve body is easy to lose efficacy due to frequent disassembly and assembly. And the adjusting hole of the valve core adopts an inner conical surface design, so that the valve core is easy to collide and damage in the processing and conveying processes. In addition, the burr of the threaded hole in the valve body is difficult to remove.
SUMMERY OF THE UTILITY MODEL
The utility model has a main purpose of overcoming at least one defect in the prior art and providing a stop valve which can effectively protect a valve core, is easy to remove burrs of a valve cavity, is simple and convenient to operate and has high efficiency.
In order to achieve the purpose, the utility model adopts the following technical scheme:
according to one aspect of the utility model, a stop valve is provided, which comprises a valve body, a valve cover, a valve core, an adjusting screw rod and a sealing ring; the valve body is provided with a valve cavity with an opening at the top end of the valve body; the valve cover is arranged at the top end of the valve body and used for sealing the valve cavity, and a through hole is formed in the position, corresponding to the valve cavity, of the valve cover; the valve core is arranged in the valve cavity in a lifting and non-rotating manner and is provided with an inner cavity with an opening at the top end, and an inner thread is arranged on the cavity wall of the inner cavity; one end of the adjusting screw rod is arranged in the valve cavity, an external thread of the adjusting screw rod is matched with the internal thread, the other end of the adjusting screw rod penetrates through the through hole to extend out of the valve cover and is used as an operating end, and the adjusting screw rod is in limit connection with the valve cover through a limiting piece so that the adjusting screw rod can rotate relative to the valve cover and cannot lift; the sealing ring is sleeved on the part, corresponding to the valve cover, of the adjusting screw rod and used for sealing between the adjusting screw rod and the valve cover.
According to one embodiment of the utility model, the valve cover is detachably and fixedly connected with the valve body.
According to one embodiment of the utility model, the adjusting screw rod is in limit connection with the valve cover through a clamp spring, the clamp spring is located outside the valve cover, a protruding structure is arranged on the periphery of the other end of the adjusting screw rod, and the clamp spring is located between the protruding structure and the valve cover.
According to one embodiment of the present invention, the other end of the adjusting screw is provided with a wrench position for cooperating with a wrench to realize the rotation of the adjusting screw.
According to one embodiment of the present invention, wherein: the valve core is made of stainless steel or carbon steel, and the surface of the valve core is subjected to rust prevention treatment; and/or the adjusting screw is made of stainless steel or carbon steel, and the surface of the adjusting screw is subjected to rust prevention treatment.
According to one embodiment of the utility model, the outer wall of the valve core is provided with at least one first limit plane parallel to the axis of the valve core, and the inner wall of the valve cavity is provided with a second limit plane matched with the first limit plane.
According to one embodiment of the present invention, the valve core is prism-shaped, and the valve cavity is a prism-shaped cavity matching with the valve core, so that the valve core can be arranged in the valve cavity in a lifting and non-rotating manner.
According to one embodiment of the utility model, the valve core is matched with the valve body through a limiting structure, and the limiting structure comprises a first key groove, a second key groove and a key; the first key groove is axially arranged on the wall of the valve cavity; the second key groove is axially arranged on the outer wall of the valve core; the key is arranged between the first key groove and the second key groove, so that the valve core can be lifted and can not be rotationally arranged in the valve cavity.
According to one embodiment of the present invention, wherein: the wall of the valve cavity is provided with a plurality of circumferentially spaced first key grooves, the outer wall of the valve core is provided with a plurality of circumferentially spaced second key grooves, and the plurality of first key grooves correspond to the plurality of second key grooves respectively and are in limit fit with the plurality of keys respectively; and/or the section of the first key groove is arc-shaped or rectangular; and/or the section of the second key groove is arc-shaped or rectangular; and/or the end part of the first key groove along the axial direction is in a chamfer structure; and/or the end part of the second key groove along the axial direction is in a chamfer structure; and/or the two sides of the first key groove along the circumferential direction are in a chamfer structure; and/or the second key groove is in a chamfer structure along two side edges of the circumferential direction.
According to one embodiment of the present invention, the valve core and the valve body are matched through a limiting structure, the limiting structure includes a limiting protrusion and a limiting groove, the limiting protrusion is disposed on one of the outer wall of the valve core and the wall of the valve cavity, the limiting groove is disposed on the other of the outer wall of the valve core and the wall of the valve cavity and extends along the axial direction of the valve core, and the limiting protrusion is in sliding fit with the limiting groove, so that the valve core can be lifted and can not be rotatably disposed in the valve cavity.
According to one embodiment of the present invention, the axial center of the valve core is not overlapped with the axial center of the inner cavity, so that the valve core can be lifted and arranged in the valve cavity in a non-rotatable manner.
According to the technical scheme, the stop valve provided by the utility model has the advantages and positive effects that:
the stop valve provided by the utility model has the advantages that the valve core is arranged on the adjusting screw rod matched with the valve core in a threaded manner, and the valve core can be arranged in the valve cavity of the valve body in a lifting and non-rotating manner, so that the valve core is driven to lift along the axial direction by rotating the adjusting screw rod. Through the design, the valve cover is not required to be detached when the valve core is adjusted, the adjusting screw rod extending out of the valve cover can be directly operated, the operation is simple and convenient, the efficiency is higher, and the service life of the connecting structure of the valve cover and the valve body is prolonged. And the valve core is always kept in the valve cavity in the using process, so that the valve core is not easy to collide and damage in the processing and carrying processes, and the service life of the valve core is prolonged. In addition, the valve cavity in the valve body does not need to be provided with internal threads, so that burrs in the valve cavity machining process are less, and the burrs are easy to remove.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the utility model, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the utility model and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
FIG. 1 is a schematic illustration in perspective cross-section of a shut-off valve shown in accordance with an exemplary embodiment;
FIG. 2 is a partially cross-sectional schematic view of the shut-off valve shown in FIG. 1 with the valve port fully open;
fig. 3 is an enlarged view of a portion a in fig. 2;
FIG. 4 is a partially cross-sectional schematic view of the shut-off valve shown in FIG. 1 with the valve port closed;
FIG. 5 is a schematic perspective view of an adjustment screw of the shut-off valve shown in FIG. 1;
FIG. 6 is a front view of the adjustment screw shown in FIG. 5;
FIG. 7 is a top view of the adjustment screw shown in FIG. 5;
FIG. 8 is a top view of the valve cover shown in FIG. 1;
FIG. 9 is a schematic cross-sectional view taken along line B-B in FIG. 8;
FIG. 10 is a top view of the valve body shown in FIG. 1;
FIG. 11 is a schematic cross-sectional view taken along line C-C of FIG. 10;
FIG. 12 is a perspective view of the valve cartridge shown in FIG. 1;
FIG. 13 is a front view of the valve cartridge shown in FIG. 12;
FIG. 14 is a top view of the valve cartridge shown in FIG. 12;
FIG. 15 is a top view of a valve body of a stop valve according to another exemplary embodiment;
FIG. 16 is a schematic cross-sectional view taken along line D-D in FIG. 15;
FIG. 17 is a schematic perspective view of a spool of a shutoff valve according to another exemplary embodiment;
FIG. 18 is a front view of the valve cartridge shown in FIG. 17;
FIG. 19 is a top view of the valve cartridge shown in FIG. 17;
FIG. 20 is a top view of a valve body of a stop valve shown in accordance with yet another exemplary embodiment;
FIG. 21 is a schematic cross-sectional view taken along line E-E in FIG. 20;
FIG. 22 is a schematic perspective view of a spool of a shutoff valve according to yet another exemplary embodiment;
FIG. 23 is a front view of the valve cartridge shown in FIG. 22;
fig. 24 is a top view of the valve cartridge shown in fig. 22.
The reference numerals are explained below:
100. a valve body;
110. a valve cavity;
120. a valve port;
130. a first keyway;
200. a valve cover;
210. a through hole;
220. an internal thread;
300. a valve core;
310. an inner cavity;
320. a second keyway;
311. an internal thread;
400. adjusting the screw rod;
401. an external thread;
410. a raised structure;
420. accommodating grooves;
430. adjusting the position of a spanner;
500. a clamp spring;
600. a seal ring;
O1the shaft center;
O2an axis;
x is axial direction;
y. circumferential direction.
Detailed Description
Exemplary embodiments that embody features and advantages of the utility model are described in detail below. It is to be understood that the utility model is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the utility model, and that the description and drawings are accordingly to be regarded as illustrative in nature and not as restrictive.
In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the utility model, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the utility model.
Referring to fig. 1, a schematic perspective cross-sectional view of a shut-off valve according to the present invention is representatively illustrated. In this exemplary embodiment, the stop valve proposed by the present invention is explained by taking a one-in-two-out stop valve as an example. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to apply the inventive arrangements to other types of shut-off valves or other valve devices, and such changes are within the scope of the principles of the shut-off valves set forth herein.
As shown in fig. 1, in the present embodiment, the stop valve according to the present invention includes a valve body 100, a bonnet 200, a valve body 300, an adjusting screw 400, and a seal ring 600. 2-14, FIG. 2 representatively illustrates a schematic, partial cross-sectional view of the shutoff valve with the valve port 120 fully open; fig. 3 representatively illustrates an enlarged view of portion a in fig. 2; representatively illustrated in FIG. 4 is a partially cross-sectional schematic view of the shutoff valve in a state in which the valve port 120 is closed; a schematic perspective view of the adjustment screw 400 is representatively illustrated in fig. 5; a front view of the adjustment screw 400 is representatively illustrated in fig. 6;
representatively illustrated in fig. 7 is a top view of the adjustment screw 400; a top view of the valve cover 200 is representatively illustrated in fig. 8; representatively illustrated in fig. 9 is a schematic cross-sectional view taken along line B-B of fig. 8; representatively illustrated in fig. 10 is a top view of the valve body 100; representatively illustrated in fig. 11 is a cross-sectional view taken along line C-C of fig. 10; a schematic perspective view of the valve cartridge 300 is representatively illustrated in fig. 12; a front view of the valve cartridge 300 is representatively illustrated in fig. 13; a top view of the valve cartridge 300 is representatively illustrated in fig. 14. The structure, connection mode and functional relationship of the main components of the stop valve according to the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 9, in the present embodiment, the valve body 100 has a valve chamber 110 that opens at the top end of the valve body 100. The valve cover 200 is disposed at the top end of the valve body 100, the valve cover 200 can close the valve cavity 110, and a through hole 210 is disposed at a position of the valve cover 200 corresponding to the valve cavity 110 for the adjusting screw 400 to pass through. The valve core 300 is disposed in the valve cavity 110 in a liftable and non-rotatable manner, and the valve core 300 has an inner cavity 310 opened at the top end, and the cavity wall of the inner cavity 310 is provided with an internal thread 311. One end of the adjusting screw 400 is disposed in the valve cavity 110, the adjusting screw 400 is matched with the internal thread 311 of the inner cavity 310 by its external thread 401, the other end of the adjusting screw 400 passes through the through hole 210 of the valve cover 200 and extends out of the valve cover 200, and the other end is used as an operating end for a user to operate. The adjusting screw 400 is connected to the valve cover 200 by a limiting member, so that the adjusting screw 400 is rotatable and non-liftable with respect to the valve cover 200. The seal ring 600 is sleeved on a portion of the adjustment screw 400 corresponding to the valve cap 200, and the seal ring 600 can form a seal between the adjustment screw 400 and the valve cap 200. Accordingly, when the user needs to adjust the open/close state of the stop valve, the user only needs to apply a force to the operation end of the adjustment screw 400 by using the operation tool, so that the adjustment screw 400 rotates, and the adjustment screw 400 rotates relative to the valve element 300 while maintaining the axial X position under the limit connection action of the limit member. Because the adjusting screw 400 is in threaded fit with the valve core 300, and the valve core 300 and the valve body 100 can only relatively lift along the axial direction X but cannot relatively rotate, the valve core 300 can lift along the axial direction X, the position of the valve core 300 between the valve cavity 110 and each valve port 120 can be adjusted, and then the adjustment of different working states of the stop valve can be realized. In addition, the shut-off valve does not require the bonnet 200 to be disassembled during the adjustment process.
Through the design, the valve cap 200 does not need to be disassembled when the valve core 300 is adjusted, the adjusting screw rod 400 extending out of the valve cap 200 can be directly operated, the operation is simple and convenient, the efficiency is high, and the service life of the connecting structure of the valve cap 200 and the valve body 100 is prolonged. In addition, the valve core 300 is always kept in the valve cavity 110 in the using process, so that the valve core is not easy to collide and damage in the processing and carrying processes, and the service life of the valve core 300 is prolonged. In addition, the valve cavity 110 in the valve body 100 does not need to be provided with internal threads, so that burrs in the machining process of the valve cavity 110 are less and easy to remove.
Specifically, as shown in fig. 1, 2 and 4, in the present embodiment, the bonnet 200 and the valve body 100 may be fixedly connected in a detachable manner. On the basis, in the normal use process of the stop valve, no matter how to adjust, the valve cover 200 is fixedly connected to the valve body 100. When the components such as the adjusting screw 400 and the valve core 300 need to be replaced, or the valve cavity 110 and the inner cavity 310 need to be cleaned and maintained, the valve cover 200 can be detached from the valve body 100.
Alternatively, in the present embodiment, the bonnet 200 and the valve body 100 may be fixedly and detachably connected by a screw structure. For example, the inner wall of the bonnet 200 may be provided with an internal thread 220 along the circumferential direction Y, and the outer wall of the end of the valve body 100 may be provided with an external thread along the circumferential direction Y, and the internal thread 220 is threadedly engaged with the external thread, thereby achieving the threaded connection between the bonnet 200 and the valve body 100. In some embodiments, the bonnet 200 and the valve body 100 may be detachably and fixedly connected by other means, such as, but not limited to, a snap-fit manner, a magnetic attraction manner, and the like.
Alternatively, as shown in fig. 1 and 8, in the present embodiment, at least a portion of the valve cap 200 may be substantially hexagonal in cross-section such that the portion of the valve cap 200 substantially corresponds to the structure of a hexagonal nut. Through the design, the valve cover 200 can be more conveniently and labor-saving to assemble and disassemble. In addition, since the valve cover 200 is provided with the through hole 210, the material consumption of the valve cover 200 is reduced, and the material cost is further reduced.
Specifically, as shown in fig. 2 to 4, in the present embodiment, the adjusting screw 400 and the bonnet 200 may be in a limit connection through a snap spring 500, the snap spring 500 may be located outside the bonnet 200, and an outer circumference of the other end of the adjusting screw 400 may be provided with a protrusion 410, the snap spring 500 is located between the protrusion 410 and the bonnet 200, that is, the snap spring 500 is connected between a side surface of the protrusion 410 facing the bonnet 200 and the bonnet 200. Through the design, the clamp spring 500 is easy to check, and the problem that the clamp spring 500 is neglected to be installed can be effectively solved. In addition, the snap spring 500 does not need to be arranged inside the valve cover 200 or the valve cavity 110, so that the overall height of the valve body 100 can be reduced, and the cost is further reduced.
Alternatively, in the present embodiment, the valve body 300 may be made of stainless steel or carbon steel, and the surface of the valve body 300 may be subjected to rust prevention treatment. Through the design, the material cost of the valve core 300 can be further reduced, the rust resistance and the corrosion resistance of the valve core 300 can be optimized, the collision and damage of the valve core 300 can be effectively prevented, and the service life is prolonged.
Specifically, as shown in fig. 3, in the present embodiment, a position of the adjustment screw 400 corresponding to the valve cap 200 may be provided with a receiving groove 420, and the receiving groove 420 may be circumferentially arranged around the adjustment screw 400 in the circumferential direction Y for the sealing ring 600 to be disposed. In some embodiments, in order to provide the sealing ring 600, an accommodating groove may be provided on the wall of the through hole 210 of the valve cap 200, or an accommodating groove may be provided on the wall of the adjusting screw 400 and the wall of the through hole 210, respectively, all of which are not limited thereto.
Specifically, as shown in fig. 5 to 7, in the present embodiment, the other end of the adjusting screw 400 may be provided with a wrench position 430, and the wrench position 430 can be matched with a wrench, so that the user can conveniently rotate the adjusting screw 400.
Alternatively, as shown in fig. 5 to 7, in the present embodiment, the wrench ends 430 may have a substantially rectangular cross section. In some embodiments, the cross-section of the wrench position 430 may have other shapes, such as a triangle, a pentagon, a hexagon, etc., and an ellipse, etc., but not limited thereto.
Alternatively, in other embodiments, the other end of the adjusting screw 400 may be provided with other operation positions, such as a socket, a hexagon socket, etc., and is not limited to the design of the wrench position 430 of the above embodiments.
Alternatively, in this embodiment, the material of the adjusting screw 400 may be stainless steel or carbon steel, and the surface of the adjusting screw 400 may be subjected to rust prevention treatment. Through the design, the material cost of the adjusting screw rod 400 can be further reduced, the rust resistance and the corrosion resistance of the adjusting screw rod 400 can be optimized, the collision and damage of the adjusting screw rod 400 can be effectively prevented, and the service life is prolonged.
Specifically, in the present embodiment, the outer wall of the valve core 300 is provided with at least one first limiting plane parallel to the axis of the valve core 300, and the inner wall of the valve cavity 110 is provided with a second limiting plane matched with the first limiting plane. Preferably, two, four or six mutually parallel first limit planes are arranged on the outer wall of the valve core 300; the inner wall of the valve cavity 110 is provided with a second limit plane correspondingly matched with the first limit plane.
Specifically, as shown in fig. 10 to 14, in the present embodiment, the valve element 300 may be substantially prismatic, and the valve cavity 110 may be a prismatic cavity matching with the valve element 300, so that the valve element 300 is disposed in the valve cavity 110 in a liftable and non-rotatable manner. For example, the valve cartridge 300 may be substantially hexagonal prism-shaped, i.e., the cross-section of the valve cartridge 300 is substantially hexagonal, and the cross-sectional shape of the valve chamber 110 is hexagonal to match the valve cartridge 300. In some embodiments, the valve core 300 may also have a triangular prism, a quadrangular prism, etc., i.e., the cross section of the valve core 300 may be polygonal. Moreover, the valve core 300 may have other shapes, such as an oval shape, an irregular pattern, etc., but not limited thereto.
Referring additionally to fig. 15-19, a top view of a valve body 100 in another exemplary embodiment of the present invention is representatively illustrated in fig. 15; representatively illustrated in fig. 16 is a cross-sectional view taken along line D-D of fig. 15; fig. 17 representatively illustrates a perspective view schematically showing a valve cartridge 300 according to the present invention in the above exemplary embodiment; a front view of the valve cartridge 300 is representatively illustrated in fig. 18; a top view of the valve cartridge 300 is representatively illustrated in fig. 19.
As shown in fig. 15-19, in some embodiments, the valve cartridge 300 and the valve body 100 may be mated by a retaining structure, which may include the first keyway 130, the second keyway 320, and a key. Specifically, the first key groove 130 is disposed on the cavity wall of the valve cavity 110 along the axial direction X. The second key groove 320 is disposed on the outer wall of the valve body 300 in the axial direction X. The key is disposed between the first key groove 130 and the second key groove 320, so that the valve core 300 is disposed in the valve chamber 110 in a liftable and non-rotatable manner.
Alternatively, as shown in fig. 15 to 19, in some embodiments, the cavity wall of the valve cavity 110 may be provided with a plurality of first key slots 130 spaced along the circumferential direction Y, and the outer wall of the valve core 300 is provided with a plurality of second key slots 320 spaced along the circumferential direction Y, and the plurality of first key slots 130 and the plurality of second key slots 320 respectively correspond to each other and are respectively in limit fit through a plurality of keys. In addition, the number of the first key slots 130 may be one, and the number of the second key slots 320 may be one, so that the number of the keys may be one.
Alternatively, as shown in fig. 15, 17 and 19, in some embodiments, the first keyway 130 may be substantially arcuate or rectangular in cross-section. Also, the second key groove 320 may have a substantially arc-shaped or rectangular cross-section. In addition, the cross-sectional shapes of the first key groove 130 and the second key groove 320 may be the same or different for a pair of the first key groove 130 and the second key groove 320 that are engaged by the same key. The cross-sectional shapes of the first key grooves 130 may be the same or may not be the same for the first key grooves 130 provided in the wall of the valve chamber 110, and the cross-sectional shapes of the second key grooves 320 may be the same or may not be the same for the second key grooves 320 provided in the outer wall of the valve spool 300.
Alternatively, as shown in fig. 16, in some embodiments, one end of the first key groove 130 in the axial direction X may be opened at one end of the valve chamber 110, that is, the opening position of the valve chamber 110. In some embodiments, the first key slot 130 may also penetrate through two end portions of the valve chamber 110 along the axial direction X, for example, the other end of the first key slot 130 opens at a connection point between the valve chamber 110 and the valve port 120 directly below. Alternatively, neither end of the first key slot 130 may be open at the end of the valve chamber 110. In addition, an end portion of the first key groove 130 in the axial direction X may have a chamfered structure, such as a rounded structure or a chamfered structure.
Alternatively, as shown in fig. 17 and 18, in some embodiments, an end of the second key groove 320 in the axial direction X may have a chamfered structure, such as a rounded structure. The other end of the second key groove 320 in the axial direction X is open to one end of the valve body 300. In some embodiments, when the end of the second key groove 320 along the axial direction X is chamfered, the second key groove may also be chamfered. Alternatively, the second key groove 320 may penetrate both ends of the valve element 300 in the axial direction X, and both ends of the second key groove 320 may not be open at the ends of the valve element 300.
Alternatively, in some embodiments, two sides of the first key groove 130 along the circumferential direction Y may have a chamfered structure, such as a rounded structure or a chamfered structure. Similarly, two sides of the second key groove 320 along the circumferential direction Y may have a chamfered structure, such as a rounded structure or a chamfered structure.
In some embodiments, when the valve core 300 is matched with the valve body 100 through the limiting structure, the limiting structure may also include a limiting protrusion and a limiting groove. Specifically, the limiting protrusion is disposed on one of the outer wall of the valve core 300 and the wall of the valve cavity 110. The limiting groove is arranged on the other one of the outer wall of the valve core 300 and the wall of the valve cavity 110 and extends along the axial direction X of the valve core 300, and the limiting bulge is in sliding fit with the limiting groove, so that the valve core 300 can be lifted and can not be rotatably arranged in the valve cavity 110. The setting that spacing channel can be similar first keyway and second keyway sets up, and here is no longer do more and is repeated, and spacing arch cooperates the setting with spacing channel shape phase-match.
Referring to fig. 20-24 in conjunction, fig. 20 representatively illustrates a top view of a valve body 100 in a further exemplary embodiment of the present invention; representatively illustrated in fig. 21 is a schematic cross-sectional view taken along line E-E of fig. 20; fig. 22 is a schematic perspective view typically illustrating the valve cartridge 300 according to the present invention in the above exemplary embodiment; a front view of the valve cartridge 300 is representatively illustrated in fig. 23; a top view of the valve cartridge 300 is representatively illustrated in fig. 24.
As shown in fig. 20-24, in some embodiments, the axial center O of the valve spool 3001Axial center O with inner cavity 3102The valve core 300 may be misaligned, that is, the inner cavity 310 of the valve core 300 is substantially in the form of an eccentric threaded hole, so that the valve core 300 is disposed in the valve cavity 110 in a liftable and non-rotatable manner.
It should be noted herein that the shut-off valves shown in the drawings and described in this specification are only a few examples of the many types of shut-off valves that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any details or any components of the shut-off valve shown in the drawings or described in this specification.
In summary, in the stop valve provided by the present invention, the adjusting screw 400 is disposed on the valve element 300 and screwed together, and the valve element 300 is disposed in the valve cavity 110 of the valve body 100 in a liftable and non-rotatable manner, so that the valve element 300 is driven to ascend and descend along the axial direction X by rotating the adjusting screw 400. Through the design, the valve cap 200 does not need to be disassembled when the valve core 300 is adjusted, the adjusting screw rod 400 extending out of the valve cap 200 can be directly operated, the operation is simple and convenient, the efficiency is high, and the service life of the connecting structure of the valve cap 200 and the valve body 100 is prolonged. In addition, the valve core 300 is always kept in the valve cavity 110 in the using process, so that the valve core is not easy to collide and damage in the processing and carrying processes, and the service life of the valve core 300 is prolonged. In addition, the valve cavity 110 in the valve body 100 does not need to be provided with internal threads, so that burrs in the machining process of the valve cavity 110 are less and easy to remove.
Exemplary embodiments of the shut-off valve proposed by the present invention are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
While the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.

Claims (11)

1. A shut-off valve, comprising:
the valve body is provided with a valve cavity with an opening at the top end of the valve body;
the valve cover is arranged at the top end of the valve body and used for sealing the valve cavity, and a through hole is formed in the position, corresponding to the valve cavity, of the valve cover;
the valve core is arranged in the valve cavity in a lifting and non-rotating manner and is provided with an inner cavity with an opening at the top end, and an inner thread is arranged on the cavity wall of the inner cavity;
one end of the adjusting screw rod is arranged in the valve cavity, an external thread of the adjusting screw rod is matched with the internal thread, the other end of the adjusting screw rod penetrates through the through hole to extend out of the valve cover and is used as an operating end, and the adjusting screw rod is in limit connection with the valve cover through a limiting piece so that the adjusting screw rod can rotate relative to the valve cover and cannot lift; and
and the sealing ring is sleeved on the part, corresponding to the valve cover, of the adjusting screw rod and is used for sealing between the adjusting screw rod and the valve cover.
2. The shut-off valve of claim 1, wherein the bonnet is removably fixedly connected to the valve body.
3. The stop valve of claim 1, wherein the adjusting screw rod is in limit connection with the valve cover through a clamp spring, the clamp spring is located outside the valve cover, a protruding structure is arranged on the periphery of the other end of the adjusting screw rod, and the clamp spring is located between the protruding structure and the valve cover.
4. The shut-off valve of claim 1, wherein the other end of the adjusting screw is provided with a wrench position for cooperating with a wrench to effect rotation of the adjusting screw.
5. The shut-off valve of claim 1, wherein:
the valve core is made of stainless steel or carbon steel, and the surface of the valve core is subjected to rust prevention treatment; and/or
The material of adjusting screw is stainless steel or carbon steel, and adjusting screw's surface is done rust-resistant treatment.
6. The stop valve according to any one of claims 1 to 5, characterized in that the outer wall of the valve core is provided with at least one first limit plane parallel to the axis of the valve core, and the inner wall of the valve cavity is provided with a second limit plane matched with the first limit plane.
7. The stop valve of claim 6, wherein the valve core is prismatic, and the valve cavity is a prismatic cavity matching the valve core, such that the valve core is liftable and non-rotatably disposed in the valve cavity.
8. The stop valve of any one of claims 1 to 5, wherein the valve core and the valve body are matched through a limiting structure, and the limiting structure comprises:
the first key groove is axially arranged on the cavity wall of the valve cavity;
the second key groove is arranged on the outer wall of the valve core along the axial direction; and
and the key is arranged between the first key groove and the second key groove, so that the valve core can be lifted and can not be rotationally arranged in the valve cavity.
9. The shut-off valve of claim 8, wherein:
the wall of the valve cavity is provided with a plurality of circumferentially spaced first key grooves, the outer wall of the valve core is provided with a plurality of circumferentially spaced second key grooves, and the plurality of first key grooves correspond to the plurality of second key grooves respectively and are in limit fit with the plurality of keys respectively; and/or
The section of the first key groove is arc-shaped or rectangular; and/or
The section of the second key groove is arc-shaped or rectangular; and/or
The end part of the first key groove along the axial direction is of a chamfer structure; and/or
The end part of the second key groove along the axial direction is of a chamfer structure; and/or
The first key groove is in a chamfer structure along two side edges of the circumferential direction; and/or
The second key groove is in a chamfer structure along two side edges of the circumferential direction.
10. The stop valve according to any one of claims 1 to 5, wherein the valve core and the valve body are matched through a limiting structure, the limiting structure comprises a limiting protrusion and a limiting groove, the limiting protrusion is arranged on one of the outer wall of the valve core and the wall of the valve cavity, the limiting groove is arranged on the other one of the outer wall of the valve core and the wall of the valve cavity and extends along the axial direction of the valve core, and the limiting protrusion is in sliding fit with the limiting groove, so that the valve core can be arranged in the valve cavity in a lifting and non-rotating manner.
11. The stop valve according to any one of claims 1 to 5, wherein the axial center of the valve core is not coincident with the axial center of the inner cavity, so that the valve core can be arranged in the valve cavity in a lifting and non-rotating manner.
CN202122977800.7U 2021-11-29 2021-11-29 Stop valve Active CN216279405U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122977800.7U CN216279405U (en) 2021-11-29 2021-11-29 Stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122977800.7U CN216279405U (en) 2021-11-29 2021-11-29 Stop valve

Publications (1)

Publication Number Publication Date
CN216279405U true CN216279405U (en) 2022-04-12

Family

ID=81041471

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122977800.7U Active CN216279405U (en) 2021-11-29 2021-11-29 Stop valve

Country Status (1)

Country Link
CN (1) CN216279405U (en)

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