Regulating valve with supporting structure

Abstract

The utility model discloses a regulating valve with a supporting structure, which relates to the technical field of regulating valves, and comprises a valve body, a valve seat, a guide sleeve and a valve core, a cavity is arranged in the valve body, and the valve seat and the guide sleeve are symmetrically arranged in the cavity; a movable sealing ring in a circular truncated cone shape is fixedly arranged on the outer wall of a core head of the valve core; an upper sealing ring and a reinforcing piece are sequentially arranged at the lower end of the guide sleeve, and the guide sleeve, the upper sealing ring and the reinforcing piece are assembled in a coaxial mode to form a combined supporting structure. The movable sealing ring enters the upper sealing ring and is attached to the upper sealing ring, the guide sleeve and the valve element are sealed, water flow is prevented from rising from the guide sleeve, the upper end of the valve element is not in contact with the upper sealing ring, friction between the valve element and the upper sealing ring is reduced, the service life of the sealing ring is prolonged, the strength of the upper sealing ring is enhanced through the reinforcing piece, and the sealing performance is improved. After the movable sealing ring is located in the upper sealing ring, the movable sealing ring is attached more tightly.

Description

Technical Field

[0001] This utility model relates to the field of control valves, and in particular to a control valve with a support structure. Background Technology

[0002] The pneumatic single-seat control valve is the most commonly used type of pneumatic control valve. It uses compressed air as power, receives pressure signals from the control system, and adjusts the flow rate of the medium in the pipeline according to the proportional change in the signal, thus automating the production control process. The pneumatic single-seat control valve consists of two parts: a pneumatic actuator and a single-seat control valve.

[0003] The installation stability of the dynamic sealing structure inside a control valve is a key technical bottleneck restricting its operational efficiency. Traditional sealing components mostly use planar contact gasket structures, which are prone to radial displacement during the high-frequency reciprocating motion of the valve core, resulting in uneven pressure distribution on the sealing surface. Especially when the medium pressure fluctuates, asymmetrical friction occurs between the gasket and the outer wall of the valve core, causing the gasket edge to curl and deform or even crack. This unstable installation state not only accelerates the wear of the sealing element but also poses a risk of internal or external leakage of the medium, forcing frequent equipment shutdowns to replace the seals. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing control valves, such as the easy wear of the internal dynamic sealing structure, and to propose a control valve with a support structure.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0006] A regulating valve with a support structure includes a valve body, a valve seat, a guide sleeve, and a valve core.

[0007] The valve body has an internal chamber, and the valve seat and guide sleeve are symmetrically installed in the chamber.

[0008] The valve core has a fixed movable sealing ring in the shape of a frustum on its outer wall.

[0009] The lower end of the guide sleeve is provided with an upper sealing ring and a reinforcing member in sequence, and the inner wall of the upper sealing ring and the outer wall of the movable sealing ring form a conical sealing fit.

[0010] The reinforcement is a ring structure with a groove on its inner side that matches the outer wall of the upper sealing ring. It is clamped to the outer wall of the upper sealing ring by interference fit.

[0011] The guide sleeve, upper sealing ring, and reinforcement are assembled coaxially to form a combined support structure.

[0012] Preferably, the upper sealing ring includes a fixing ring and a fitting ring. The upper end of the fixing ring is fixedly connected to the outer wall of the guide sleeve, and the fitting ring is hourglass-shaped. The upper part of the inner wall of the fitting ring is fitted to the outer wall of the movable sealing ring.

[0013] Preferably, the reinforcement includes a fixing ring, which is fixedly installed on the outer wall of the guide sleeve. The lower end of the fixing ring is provided with a plurality of locking blocks in a ring shape, and the protrusion of the locking blocks is located in the middle of the fitting ring.

[0014] Preferably, the inner wall of the opening above the valve seat is provided with a lower sealing ring, and the inner wall of the lower sealing ring is in contact with the outer wall of the movable sealing ring.

[0015] Preferably, a positioning ring is fixedly provided on the inner wall of the opening above the valve seat, and multiple positioning rods are provided in a ring shape at the lower end of the positioning ring. Multiple positioning grooves are provided on the lower sealing ring, and the positioning rods pass through the positioning grooves.

[0016] Preferably, the upper end of the valve core passes through the guide sleeve, and the lower end of the valve core is in contact with the inner wall of the valve seat.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, the movable sealing ring enters the upper sealing ring and fits with the upper sealing ring to seal between the guide sleeve and the valve core, preventing water from rising from the guide sleeve. The upper end of the valve core does not contact the upper sealing ring, reducing friction between the valve core and the upper sealing ring and extending the service life of the sealing ring. By using reinforcement to enhance the strength of the upper sealing ring, the movable sealing ring fits more tightly after it is located inside the upper sealing ring.

[0019] 2. In this utility model, after the valve core enters the valve seat, the movable sealing ring fits against the inner wall of the lower sealing ring, blocking the two sections of the valve body's inner cavity. The upper area of ​​the lower sealing ring is larger than the lower area, which facilitates the movable sealing ring to enter the lower sealing ring. The lower sealing ring is positioned by passing the positioning rod through the positioning groove of the lower sealing ring, which improves the stability of the lower sealing ring and makes the fit between the lower sealing ring and the movable sealing ring tighter. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the valve seat, valve core, and guide sleeve structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the valve seat and guide sleeve of this utility model;

[0024] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0025] The numbers in the diagram are: 1. Valve body; 11. Valve core; 12. Valve seat; 13. Guide sleeve; 14. Moving sealing ring; 2. Upper sealing ring; 21. Fixing ring; 22. Fitting ring; 3. Reinforcing component; 31. Fixing ring; 32. Locking block; 4. Lower sealing ring; 5. Positioning ring; 51. Positioning rod; 52. Positioning groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example: This example provides a regulating valve with a support structure, see [link to example]. Figure 1-4 Specifically, it includes a valve body 1, a valve seat 12, a guide sleeve 13, and a valve core 11. The valve body 1 has a cavity inside, and the valve seat 12 and the guide sleeve 13 are symmetrically installed in the cavity. The upper end of the valve core 11 passes through the guide sleeve 13, and the lower end of the valve core 11 is in contact with the inner wall of the valve seat 12. The cavity inside the valve body 1 is divided into two sections, and the cavity is a fluid channel. When the valve core 11 is located in the valve seat 12 at the center of the two sections, the two sections are separated. When the valve core 11 moves upward along the guide sleeve 13, the inner cavity of the valve seat 12 opens, and the two sections are connected, thereby realizing the control of the flow rate.

[0028] A frustum-shaped movable sealing ring 14 is fixedly provided on the outer wall of the valve core 11. The movable sealing ring 14 has a large upper area and a small lower area. The movable sealing ring 14 is made of rubber and is attached to the outer wall of the valve core 11 to seal the inner cavity of the valve seat 12.

[0029] The lower end of the guide sleeve 13 is provided with an upper sealing ring 2 and a reinforcing member 3. The inner wall of the upper sealing ring 2 and the outer wall of the movable sealing ring 14 form a conical sealing fit. When the valve core 11 leaves the valve seat 12 and its upper end is in contact with the lower end of the guide sleeve 13, the movable sealing ring 14 enters the upper sealing ring 2 and fits with the upper sealing ring 2 to seal the space between the guide sleeve 13 and the valve core 11, preventing water from rising from the guide sleeve 13. The upper end of the valve core 11 does not contact the upper sealing ring 2, reducing the friction between the valve core 11 and the upper sealing ring 2 and extending the service life of the sealing ring.

[0030] The reinforcement 3 is a ring structure with a groove on its inner side that matches the outer wall of the upper sealing ring 2. It is clamped to the outer wall of the upper sealing ring 2 by interference fit. The reinforcement 3 is used to enhance the strength of the upper sealing ring 2, so that the movable sealing ring 14 is located inside the upper sealing ring 2 and fits more tightly.

[0031] The guide sleeve 13, the upper sealing ring 2, and the reinforcement 3 are assembled coaxially to form a combined support structure. The guide sleeve 13, through the upper sealing ring 2 and the reinforcement 3, not only makes the seal tighter, but also extends the service life of the sealing ring.

[0032] In the specific implementation process, such as Figure 3 and Figure 4 As shown, the upper sealing ring 2 includes a fixing ring 21 and a fitting ring 22. The upper end of the fixing ring 21 is fixedly connected to the outer wall of the guide sleeve 13. The fitting ring 22 is hourglass-shaped. The upper part of the inner wall of the fitting ring 22 fits against the outer wall of the movable sealing ring 14. The fitting ring 22 is set in the shape of an hourglass so that the movable sealing ring 14 can easily enter the fitting ring 22 and fit against the upper cavity of the fitting ring 22, thereby improving the sealing below the guide sleeve 13.

[0033] In the specific implementation process, such as Figure 3 and Figure 4 As shown, the reinforcement component 3 includes a fixing ring 31, which is fixedly installed on the outer wall of the guide sleeve 13. The lower end of the fixing ring 31 is provided with a plurality of locking blocks 32 in a ring shape. The protrusion of the locking blocks 32 is located in the middle of the fitting ring 22. The upper cavity of the fitting ring 22 is reinforced by the locking blocks 32, while the lower cavity of the fitting ring 22 is not fitted with the locking blocks 32, which facilitates the entry and exit of the moving sealing ring 14.

[0034] In the specific implementation process, such as Figure 3 and Figure 4 As shown, a lower sealing ring 4 is provided on the inner wall of the opening above the valve seat 12. The inner wall of the lower sealing ring 4 fits against the outer wall of the movable sealing ring 14. After the valve core 11 enters the valve seat 12, the movable sealing ring 14 fits against the inner wall of the lower sealing ring 4, blocking the two sections of the inner cavity of the valve body 1. The area above the lower sealing ring 4 is larger than that below, which facilitates the movable sealing ring 14 to enter the lower sealing ring 4.

[0035] In the specific implementation process, such as Figure 3 and Figure 4 As shown, a positioning ring 5 is fixedly provided on the inner wall of the opening above the valve seat 12. Multiple positioning rods 51 are provided in a ring shape at the lower end of the positioning ring 5. Multiple positioning grooves 52 are provided on the lower sealing ring 4. The positioning rods 51 pass through the positioning grooves 52 and the positioning rods 51 pass through the positioning grooves 52 of the lower sealing ring 4 to position the lower sealing ring 4. This improves the stability of the lower sealing ring 4 and makes the lower sealing ring 4 fit more tightly with the moving sealing ring 14.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A regulating valve with a support structure, comprising a valve body (1), a valve seat (12), a guide sleeve (13), and a valve core (11), characterized in that: The valve body (1) has a cavity inside, and the valve seat (12) and guide sleeve (13) are symmetrically installed in the cavity; The valve core (11) has a fixed movable sealing ring (14) in the shape of a frustum on its outer wall; The guide sleeve (13) is provided with an upper sealing ring (2) and a reinforcing member (3) in sequence at its lower end. The inner wall of the upper sealing ring (2) and the outer wall of the movable sealing ring (14) form a conical sealing fit. The reinforcement (3) is a ring structure, and its inner side is provided with a groove that matches the outer wall of the upper sealing ring (2). It is clamped to the outer wall of the upper sealing ring (2) by interference fit. The guide sleeve (13), upper sealing ring (2), and reinforcement (3) are assembled coaxially to form a combined support structure.

2. A regulating valve with a support structure according to claim 1, characterized in that: The upper sealing ring (2) includes a fixing ring (21) and a fitting ring (22). The upper end of the fixing ring (21) is fixedly connected to the outer wall of the guide sleeve (13). The fitting ring (22) is hourglass-shaped, and the upper part of the inner wall of the fitting ring (22) is fitted to the outer wall of the movable sealing ring (14).

3. A regulating valve with a support structure according to claim 2, characterized in that: The reinforcement component (3) includes a fixing ring (31), which is fixedly installed on the outer wall of the guide sleeve (13). The lower end of the fixing ring (31) is provided with a plurality of locking blocks (32) in a ring shape, and the protrusion of the locking block (32) is located in the middle of the fitting ring (22).

4. A regulating valve with a support structure according to claim 1, characterized in that: The valve seat (12) has a lower sealing ring (4) on its inner wall at the opening above it. The inner wall of the lower sealing ring (4) is in contact with the outer wall of the movable sealing ring (14).

5. A regulating valve with a support structure according to claim 4, characterized in that: A positioning ring (5) is fixedly provided on the inner wall of the opening above the valve seat (12). The lower end of the positioning ring (5) is provided with a plurality of positioning rods (51) in a ring shape. A plurality of positioning grooves (52) are provided on the lower sealing ring (4). The positioning rods (51) pass through the positioning grooves (52).

6. A regulating valve with a support structure according to claim 1, characterized in that: The upper end of the valve core (11) passes through the guide sleeve (13), and the lower end of the valve core (11) is in contact with the inner wall of the valve seat (12).

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