Sleeve type regulating valve

Abstract

The utility model provides a sleeve type regulating valve which comprises a valve body, a valve seat arranged in the valve body, a sleeve and a valve element, and the valve body is provided with a limiting part corresponding to the valve seat so as to limit the valve seat to move towards the sleeve side in the axial direction of the valve seat; an avoiding space corresponding to the sleeve is formed in the inner wall of the valve body, the valve seat is located at the opening end of the avoiding space, the sleeve is arranged in the avoiding space in a floating mode, and the end, close to the valve seat, of the sleeve abuts against the corresponding end face of the valve seat; the valve element is arranged in the sleeve in a reciprocating sliding mode in the axial direction of the valve element so as to shield or expose the throttling hole in the sleeve, and the cutting edge of the valve element abuts against the corresponding end face of the valve seat when the valve is closed. The stable receding space is formed between the valve seat and the valve body to install the sleeve, the sleeve is prevented from being in a pressed state for a long time, meanwhile, the sleeve is arranged in the receding space in a floating mode, deformation of the sleeve due to thrust of the valve element in the action process of the valve element is avoided, the probability that the action of the valve element is blocked or even stuck due to deformation of the sleeve is effectively reduced, and the service life of the valve element is prolonged. And the stability and reliability of the function of the valve are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, and further relates to a sleeve type regulating valve. BACKGROUND

[0002] In the industry, sleeve type regulating valves are widely used in flow control scenarios in petrochemical, power, metallurgy and other fields due to their balanced valve core design, flexible flow regulation and convenient maintenance.

[0003] In the related art, the sleeve of the sleeve type regulating valve is in clearance fit with the valve core, the valve core moves in the sleeve in the axial direction, and the throttle hole on the sleeve is shielded or exposed to achieve regulation of the downstream flow pressure. At present, the sleeve of the sleeve type regulating valve on the market is mostly pressed on the valve body through the valve seat, and the sleeve is always in a pressed state; and when the valve is closed, the medium imbalance force caused by the pressure difference at both ends of the valve also acts on the sleeve through the valve seat, causing the sleeve to be pressed; the above all makes the sleeve prone to deformation in actual application, thereby increasing the resistance of the valve core during operation, and even causing the valve core to be stuck, which needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a sleeve type regulating valve to avoid deformation of the sleeve due to long-term pressure, thereby reducing the probability of increasing the resistance of the valve core during operation or even being stuck, and improving the functional stability of the valve.

[0005] The technical scheme provided by the present application is as follows:

[0006] The present application provides a sleeve type regulating valve, comprising:

[0007] a valve body;

[0008] a valve seat arranged in the valve body; the valve body is provided with a limiting portion for limiting the valve seat from moving in the axial direction thereof;

[0009] a sleeve arranged on the inner wall of the valve body; the valve body is formed with a avoiding space corresponding to the sleeve, the valve seat is located at the opening end of the avoiding space, the sleeve is floatingly arranged in the avoiding space, and the end portion of the sleeve close to the valve seat abuts against the corresponding end face of the valve seat;

[0010] a valve core reciprocally sliding in the axial direction thereof in the sleeve to shield or expose the throttle hole on the sleeve, and the cutting edge of the valve core abuts against the corresponding end face of the valve seat when the valve is closed.

[0011] The sleeve type regulating valve provided by the application avoids the situation that the valve seat extrudes the sleeve after blocking the sleeve, effectively reduces the probability that the sleeve deforms due to long-term pressure, and effectively ensures the smoothness of the action of the valve core and improves the functional stability of the valve.

[0012] In some embodiments, the valve seat comprises a body and a pressing block,

[0013] The pressing block comprises a large-diameter section and a small-diameter section arranged coaxially, so that the axial cross section of the pressing block is T-shaped;

[0014] The limiting portion is formed at one end of the valve body away from the valve core; the large-diameter section is adapted to the shape of the limiting portion and is embedded in the limiting portion, and the end face of the large-diameter section close to the small-diameter section abuts against the corresponding wall face of the limiting portion;

[0015] The abutting portion is formed at the opening end of the valve body in the avoidance space;

[0016] The two ends of the body abut against the corresponding end faces of the abutting portion and the end face of the small-diameter section, respectively.

[0017] The sleeve type regulating valve provided by the application sets an abutting portion at the opening end of the valve body corresponding to the avoidance space, uses the abutting portion to limit the movement of the valve seat along its axial direction towards the valve core side, and keeps the avoidance space at a predetermined size, thereby avoiding the situation that the valve seat extrudes the sleeve after blocking the sleeve, effectively reducing the probability that the sleeve deforms due to long-term pressure, and effectively ensuring the smoothness of the action of the valve core and improving the functional stability of the valve.

[0018] In some embodiments, the valve seat comprises a body and a pressing block,

[0019] The pressing block comprises a large-diameter section and a small-diameter section arranged coaxially, so that the axial cross section of the pressing block is T-shaped;

[0020] The limiting portion is formed at one end of the valve body away from the valve core; the large-diameter section is adapted to the shape of the limiting portion and is embedded in the limiting portion, and the end face of the large-diameter section close to the small-diameter section abuts against the corresponding wall face of the limiting portion;

[0021] The body and the pressing block are integrally formed;

[0022] The sleeve abuts against one end of the body away from the pressing block.

[0023] By means of the sleeve type regulating valve provided in the present application, the body and the pressing block are integrally formed, the limiting portion on the valve body is used to limit the movement of the valve seat along the axial direction to one side of the valve core, so as to avoid the extrusion of the sleeve by the valve seat after the sleeve is blocked, reduce the probability of deformation of the sleeve due to the extrusion of the valve seat, and effectively ensure the stable and reliable operation of the valve core. At the same time, the valve seat is simple in forming mode and convenient in production, which is beneficial to the enterprises to reduce cost and increase benefit.

[0024] In some embodiments, the sleeve is in clearance fit with the valve body and the valve core in the radial direction;

[0025] The sleeve is provided with a floating member for driving the sleeve to float relative to the valve body.

[0026] In some embodiments, the floating member includes a first elastic pad arranged at one end of the sleeve close to the valve seat.

[0027] One end of the sleeve away from the first elastic pad abuts against the corresponding inner wall of the avoidance space.

[0028] In some embodiments, the floating member includes a second elastic pad arranged at one end of the sleeve away from the valve seat.

[0029] One end of the sleeve away from the second elastic pad abuts against the corresponding end face of the valve seat.

[0030] By means of the sleeve type regulating valve provided in the present application, the first elastic pad and / or the second elastic pad constitute the floating member, and the sleeve is floated in the valve body, so as to replace the operation of pressing the sleeve against the valve body by the valve seat in the related art, and the sleeve is changed from the fixed state to the floating state which can be slightly adjusted. When the valve core acts, the force of the valve core acts on the sleeve, and the sleeve extrudes the first elastic pad or the second elastic pad, so as to adjust the position of the sleeve in real time according to the force, reduce the probability of deformation due to extrusion, and further reduce the phenomenon that the resistance in the action process of the valve core becomes larger or even is blocked. At the same time, the installation operation of the sleeve in the valve core is simple, the setting is convenient, and the user experience is helpful to be ensured.

[0031] In some embodiments, a first deformation groove is arranged on the side wall of the valve seat and close to one end of the sleeve.

[0032] In some embodiments, a second deformation groove is arranged on the valve body; the second deformation groove is located at one end of the sleeve away from the valve seat and is arranged in a spaced manner with the avoidance space.

[0033] The sleeve type regulating valve provided by the application is characterized in that the first deformation groove and / or the second deformation groove are used to push the valve seat and / or the valve body to deform after the sleeve is subjected to an axial force, so as to reduce the probability of extrusion deformation of the sleeve as much as possible and significantly improve the functional stability of the sleeve type regulating valve; meanwhile, the sealing ring of the corresponding valve can be arranged in the first deformation groove and / or the second deformation groove, so as to effectively simplify the structure of the sleeve type regulating valve and reduce the production cost.

[0034] In some embodiments, a rubber pad is coaxially arranged on one side of the valve seat close to the valve core;

[0035] When the valve is closed, the cutting edge of the valve core abuts against the rubber pad.

[0036] The sleeve type regulating valve provided by the application is characterized in that the cutting edge abuts against the rubber pad, the pressing amount of the valve core relative to the valve seat is prolonged, and the sealing stability of the valve is improved.

[0037] In some embodiments, the valve rod is connected to the valve core through a fastener, and the power input end of the valve rod is located on the side of the valve core away from the valve seat.

[0038] Compared with the prior art, the sleeve type regulating valve provided by the application has at least one of the following beneficial effects:

[0039] 1. The sleeve is arranged in a stable avoiding space formed between the valve seat and the valve body, so that the sleeve is prevented from being subjected to pressure for a long time, and the sleeve is arranged to float in the avoiding space, so that the sleeve is prevented from being deformed due to pushing by the valve core during the movement of the valve core, the probability of the movement of the valve core being blocked or even being stuck due to the deformation of the sleeve caused by pressure is effectively reduced, and the stability and reliability of the valve are effectively ensured.

[0040] 2. The structure of the valve body and the valve seat is simply modified, an abutting portion is arranged on the valve body to limit the movement of the valve seat to the side of the valve core, or the valve seat body and the pressing block are integrally formed, and the movement of the valve seat to the side of the valve core is limited by the limiting portion on the valve body, so that the problem of the movement of the valve core being blocked due to the long-term pressure and deformation of the cage is improved, the structure of the valve is effectively ensured to be simple and ingenious, the production and assembly precision requirements of the corresponding sleeve type regulating valve are reduced, the production efficiency is improved, and the enterprise can reduce costs and increase benefits.

[0041] 3. In the application, the first elastic pad and / or the second elastic pad in a half-compressed state are arranged at the corresponding end of the sleeve under the premise that the size of the avoiding space is constant, so that the sleeve has a certain adjusting degree of freedom, in actual application, the sleeve adjusts its position in real time according to the force, the probability of the movement of the valve core being blocked due to extrusion deformation of the sleeve is significantly reduced, the structure of the sleeve is simple and convenient to arrange, and the cost investment of the enterprise in the production of the sleeve type regulating valve can be significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0042] The above features, technical characteristics, advantages and implementation manners of the present application will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0043] Figure 1 is a sectional view mainly showing the sleeve mounting form of the sleeve type regulating valve in the related art;

[0044] Figure 2 is a sectional view mainly showing the forming position of the abutting portion in the sleeve type regulating valve according to the embodiments of the present application;

[0045] Figure 3 is a sectional view mainly showing the sleeve mounting form when the valve seat is integrally formed with the body and the pressing block according to the embodiments of the present application;

[0046] Figure 4 is a specific enlarged view mainly showing the setting position of the floating member according to the embodiments of the present application.

[0047] Explanation of Reference Numerals:

[0048] 1, valve body; 11, limiting portion; 12, abutting portion; 13, second deformation groove; 2, valve seat; 21, body; 211, first deformation groove; 22, pressing block; 3, sleeve; 4, valve core; 5, floating member; 51, first elastic pad; 52, second elastic pad; 6, rubber pad; 7, valve stem; 8, fastener;

[0049] 100, high pressure area; 200, low pressure area. DETAILED DESCRIPTION

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0051] In order to make the drawings simple, only the parts related to the present application are schematically shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one".

[0052] The sleeve type regulating valve is a commonly used valve for regulating process parameters such as fluid flow, pressure, temperature and liquid level in a pipeline. The valve core moves axially in the sleeve to cover or expose the throttle hole on the sleeve to regulate the downstream flow, pressure, etc. At present, the sleeve type regulating valve on the market, with reference to Figure 1 The sleeve 3 is mostly pressed against the valve body 1 by the valve seat 2, and the sleeve 3 is always in a state of being pressed, which is easy to deform after a long time, causing the valve core 4 to move and jam. Especially when the valve is closed, the two ends of the valve are in high pressure area 100 and low pressure area 200 respectively. Due to the pressure difference, a medium imbalance surface with a width T is formed as shown in Figure 1 The medium imbalance force is formed at both ends of the valve, and the medium imbalance force increases with the increase of the pressure difference, and acts on the sleeve 3 through the valve seat 2, so that the sleeve 3 is more likely to deform, and further more likely to cause the resistance to increase or even jam when the valve core 4 moves.

[0053] To this end, in one embodiment, with reference to the drawings of the specification Figures 2 to 4 A sleeve type regulating valve is provided to avoid the sleeve 3 being pressed and deformed for a long time, thereby reducing the probability of the resistance increasing or even jamming during the movement of the valve core 4, and improving the functional stability of the valve. It comprises a valve body 1, a valve seat 2 arranged in the valve body 1, a sleeve 3 and a valve core 4. The valve body 1 is provided with a limiting portion 11 corresponding to the valve seat 2 to limit the movement of the valve seat 2 along the axial direction of itself. The inner wall of the valve body 1 is formed with a avoiding space corresponding to the sleeve 3, the valve seat 2 is located at the opening end of the avoiding space, the sleeve 3 is floatingly arranged in the avoiding space, and the end of the sleeve 3 close to the valve seat 2 abuts against the corresponding end face of the valve seat 2. The valve core 4 is reciprocatingly arranged in the sleeve 3 along the axial direction of itself until the cutting edge abuts against the corresponding end face of the valve seat 2 to close the valve and cover the throttle hole on the sleeve 3, or the cutting edge is away from the corresponding end face of the valve seat 2 until the throttle hole on the sleeve 3 is exposed to open the valve.

[0054] In this way, due to the limiting portion 11, the size of the avoiding space is constant, and the sleeve 3 is floatingly arranged in the avoiding space, which avoids the sleeve 3 being pressed for a long time after being installed in the valve body 1. If the sleeve 3 is stressed due to the movement of the valve core 4, the sleeve 3 will float relative to the valve body 1 along the direction of the force and adjust its position slightly, which significantly reduces the probability of deformation due to extrusion. In this way, the probability of increasing resistance due to the deformation of the sleeve 3 during the movement of the valve core 4 is effectively reduced, the jamming phenomenon is reduced, the stability and reliability of the valve function are ensured, and the user experience is effectively improved.

[0055] In one embodiment, based on the above embodiment, specifically, to avoid the sleeve 3 being pressed and deformed as much as possible, the avoiding space size of the embodiment of the application is always kept constant, which can include various setting forms. With reference to Figures 2 to 3The limiting portion 11 is arranged at the end of the valve body 1 away from the valve core 4 by means of subtractive forming, that is, the radial dimension of the valve body 1 at the limiting portion 11 is greater than the radial dimension at other positions, and a limiting plane is formed at the side of the limiting portion 11 close to the valve core 4, so that the axial section of the mounting space of the valve seat 2 is T-shaped.

[0056] In this embodiment, referring to Figure 2 , the valve seat 2 comprises a body 21 and a pressing block 22, which are coaxially arranged; the pressing block 22 comprises a large-diameter section and a small-diameter section, which are coaxially arranged, so that the axial section of the pressing block 22 is T-shaped; during assembly, the body 21 is arranged corresponding to the shape of the mounting space of the valve seat 2, one end of the body 21 abuts against the sleeve 3, the other end abuts against the small-diameter section of the pressing block 22, the large-diameter section of the pressing block 22 is embedded in the limiting portion 11, and the end face of the large-diameter section close to the small-diameter section abuts against the limiting plane; at the same time, the opening end of the valve body 1 in the avoiding space is provided with an abutting portion 12 by means of additive forming, and one end of the body 21 abutting against the sleeve 3 abuts against the end face of the abutting portion 12 close to the limiting portion 11.

[0057] Of course, in one embodiment, based on the above-mentioned embodiment, referring to Figure 3 , the body 21 and the pressing block 22 can be integrally formed without the abutting portion 12, and the large-diameter section and the limiting portion 11 are arranged in cooperation to limit the sliding of the valve seat 2 along the axial direction of the valve seat 2 relative to the valve body 1 to the side of the valve core 4.

[0058] At the same time, referring to Figure 4 , in the embodiment of the application, the sleeve 3 is in clearance fit with the valve body 1 and the valve core 4 in the radial direction, and the sleeve 3 is further provided with a floating member 5 to realize the floating arrangement of the sleeve 3 relative to the valve body 1. Specifically, the floating member 5 comprises a first elastic pad 51 arranged at one end of the sleeve 3 close to the valve seat 2; when the valve is closed, the valve core 4 moves to the side of the valve seat 2 and exerts a pushing force on the sleeve 3, the sleeve 3 extrudes the first elastic pad 51 to adjust the position of the sleeve 3 in real time according to the force, thereby reducing the movement resistance of the valve core 4 and the probability of extrusion deformation; similarly, the floating member 5 can also comprise a second elastic pad 52 arranged at one end of the sleeve 3 away from the valve seat 2; of course, the floating member 5 can also comprise the first elastic pad 51 and the second elastic pad 52. Regardless of whether the floating member 5 comprises the first elastic pad 51 and / or the second elastic pad 52, it is necessary to ensure that the end of the first elastic pad 51 and / or the second elastic pad 52 away from the sleeve 3 abuts against the corresponding end face of the valve seat 2 and / or the valve body 1, so that the sleeve 3 fills the avoiding space.

[0059] In addition, referring to Figure 2 and Figure 3,To further reduce the probability of the sleeve 3 deformation in the process of the valve core 4 action, in the embodiment, a first deformation groove 211 can be formed in the side wall of the valve seat 2 near one end of the sleeve 3, and / or a second deformation groove 13 can be formed in the side wall of the valve body 1 near the avoiding space, specifically, the second deformation groove 13 is located at one end of the sleeve 3 away from the valve seat 2, and is arranged in a spaced manner with the avoiding space, so as to bear the deformation of the sleeve 3 after being stressed by the valve seat 2 and / or the valve body 1, thereby ensuring the movement stability of the valve core 4. At the same time, the first deformation groove 211 and the second deformation groove 13 can also be used as installation grooves for installing the sealing ring.

[0060] In the embodiment, referring to Figures 2 to 4 To ensure the stable sealing of the sleeve type regulating valve, as preferred, a mounting groove is coaxially formed in one end of the valve seat 2 near the valve core 4, and a rubber pad 6 is fixedly embedded in the mounting groove, so that the cutting edge of the valve core 4 abuts against the rubber pad 6 when the valve is closed, so as to prolong the pressing amount of the valve core 4 relative to the valve seat 2. To improve the stability of the structure of the valve seat 2, the axial section of the mounting groove is preferably T-shaped, and the axial section of the rubber pad 6 is also T-shaped. Of course, the shape of the mounting groove and the rubber pad 6 in the embodiment of the present application should not be regarded as a specific limitation on the protection scope of the present application.

[0061] In addition, referring to Figures 2 to 4 The sleeve type regulating valve further comprises a valve stem 7, the power output end of the valve stem 7 is arranged on the axis of the valve core 4 through the fastener 8, and the power input end is located on the side of the valve core 4 away from the valve seat 2.

[0062] The implementation principle of the embodiment is that: by optimizing the structure design of the valve seat 2 and the valve body 1, the axial size of the avoiding space for installing the sleeve 3 is constant, and the sleeve 3 is floatingly arranged in the avoiding space according to the stress direction, which effectively reduces the probability of the sleeve 3 deformation under pressure and causes the valve core 4 to act and jam, thereby significantly ensuring the stable and reliable operation of the sleeve type regulating valve. Moreover, the overall structure of the sleeve type regulating valve is simple, and the production and assembly are convenient, which is beneficial to the enterprises to reduce cost and increase benefit.

[0063] It should be pointed out that the above embodiments can be freely combined as needed. The above description is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, several improvements and refinements can be made without departing from the principle of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A cartridge valve characterized by, The sleeve type regulating valve comprises: a valve body; a valve seat arranged in the valve body; a limiting part is arranged on the valve body to limit the axial movement of the valve seat; a sleeve arranged on the inner wall of the valve body; the valve body is formed with a avoiding space corresponding to the sleeve, the valve seat is located at the opening end of the avoiding space, the sleeve is arranged in the avoiding space in a floating manner, and the end of the sleeve close to the valve seat abuts against the corresponding end face of the valve seat; a valve core arranged in the sleeve in a reciprocating sliding manner along its own axis to shield or expose the throttle hole on the sleeve, and the cutting edge of the valve core abuts against the corresponding end face of the valve seat when the valve is closed.

2. The sleeve type regulating valve according to claim 1, wherein: the valve seat comprises a body and a pressing block; the pressing block comprises a large-diameter section and a small-diameter section arranged coaxially, so that the axial section of the pressing block is T-shaped; the limiting part is formed on the end of the valve body away from the valve core; the large-diameter section is adapted to the shape of the limiting part and is embedded in the limiting part, and the end face of the large-diameter section close to the small-diameter section abuts against the corresponding wall face of the limiting part; an abutting part is formed on the opening end of the avoiding space of the valve body; the two ends of the body abut against the corresponding end faces of the abutting part and the end face of the small-diameter section, respectively.

3. The sleeve type regulating valve according to claim 1, wherein: The valve seat comprises a body and a pressure block ； the pressing block comprises a large-diameter section and a small-diameter section arranged coaxially, so that the axial section of the pressing block is T-shaped; the limiting part is formed on the end of the valve body away from the valve core; the large-diameter section is adapted to the shape of the limiting part and is embedded in the limiting part, and the end face of the large-diameter section close to the small-diameter section abuts against the corresponding wall face of the limiting part; the body and the pressing block are integrally formed; the sleeve abuts against the end of the body away from the pressing block.

4. The sleeve type regulating valve according to claim 1, wherein: the sleeve is in a clearance fit with the valve body and the valve core in the radial direction; a floating member is arranged on the sleeve to drive the sleeve to float relative to the valve body.

5. The sleeve type regulating valve according to claim 4, wherein: the floating member comprises a first elastic pad arranged on the end of the sleeve close to the valve seat; the end of the sleeve away from the first elastic pad abuts against the corresponding inner wall of the avoiding space.

6. The sleeve type regulating valve according to claim 4 or 5, wherein: the floating member comprises a second elastic pad arranged on the end of the sleeve away from the valve seat; the end of the sleeve away from the second elastic pad abuts against the corresponding end face of the valve seat.

7. The sleeve type regulating valve according to claim 1, wherein: a first deformation groove is arranged on the side wall of the valve seat close to the end of the sleeve.

8. The sleeve type regulating valve according to claim 1, wherein: a second deformation groove is arranged on the valve body; the second deformation groove is located at the end of the sleeve away from the valve seat and is arranged in a spaced manner with the avoiding space.

9. The sleeve type regulating valve according to claim 1, wherein: a rubber pad is arranged coaxially on the side of the valve seat close to the valve core. When the valve is closed, the cutting edge of the valve core abuts against the rubber pad.

10. The cartridge valve according to claim 1, wherein, A valve stem having a power output end connected to the valve core by a fastener and a power input end on a side of the valve core opposite the valve seat.

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