Metal sealing structure for pre-starting type regulating valve

Abstract

The utility model relates to the technical field of sealing structures, in particular to a metal sealing structure for a pre-starting type regulating valve, which comprises a valve seat, the whole valve seat is of an annular structure, the valve seat is fixedly mounted on the surface of a partition plate, a metal matching ring is arranged below the valve seat, and a valve cage is arranged above the valve seat; a mounting pipe is arranged at the upper end of the valve body, a mounting ring is arranged at the upper end of the mounting pipe, and a fixing plate is arranged above the mounting ring; the valve has the beneficial effects that the metal matching ring is fixedly installed on the lower surface of the valve seat and between the valve seat and the partition plate, the metal matching ring can enable the valve seat and the partition plate to be tightly matched, so that a good sealing effect is achieved, the installation ring is clamped between the installation pipe and the fixing plate, and the installation ring can effectively avoid leakage at the joint of the fixing plate and the installation pipe; and in addition, the whole adjusting valve is made of metal materials, and therefore the problem that the service life of the adjusting valve is short is solved.

Description

Technical Field

[0001] This utility model relates to the field of sealing structures, specifically a metal sealing structure for a pre-opening regulating valve. Background Technology

[0002] Pre-opening control valves open before system startup to balance the pressure difference between upstream and downstream, ensuring a smooth system start-up. This control method effectively reduces startup shock and vibration, extends equipment life, and improves system safety and reliability. Furthermore, pre-opening control valves optimize fluid flow, reduce energy waste, and improve overall operating efficiency. They play a crucial role in industrial fluid control, precisely regulating flow and pressure. In chemical processes, they finely adjust the flow rate of chemical raw materials according to process requirements, ensuring stable and efficient reactions and more controllable product quality. In short, pre-opening control valves play a vital role in daily production and life.

[0003] In the existing technology, the sealing structure of traditional pre-opening control valves mainly consists of a sealing seat and a sealing ring, which work together to achieve effective sealing under high pressure conditions.

[0004] However, the sealing structure of traditional pre-opening control valves uses a sealing ring for sealing. After long-term use, the sealing ring may age, causing leakage and failure to operate normally, resulting in a short service life of the control valve. Therefore, this utility model proposes a metal sealing structure for pre-opening control valves. Utility Model Content

[0005] The purpose of this invention is to provide a metal sealing structure for a pre-opening regulating valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a metal sealing structure for a pre-opening regulating valve, the metal sealing structure for the pre-opening regulating valve comprising: a valve seat, the valve seat being an integrally ring-shaped structure, the valve seat being fixedly mounted on the surface of a partition plate, a metal mating ring being provided below the valve seat, and a valve cage being provided above the valve seat;

[0007] The valve body has an installation tube at its upper end, an installation ring at its upper end, and a fixing plate above the installation ring.

[0008] Preferably, the valve seat has an overall ring-shaped structure, with a metal mating ring fixedly installed on the outer wall of the valve seat, a retaining ring fixedly installed at the upper end of the valve seat, and the inner wall of the valve seat has a downward-opening curved surface structure.

[0009] Preferably, the partition plate has an overall "S" shaped structure, and a card hole is provided on the central surface of the partition plate. The inner wall of the card hole is fixedly connected to the outer wall of the metal mating ring.

[0010] Preferably, the valve cage is a concentric cylindrical structure, with the upper end of the valve cage being inserted into the mounting tube, and an annular groove being formed on the inner wall of the lower end of the valve cage. The surface of the annular groove is fixedly connected to the outer wall of the retaining ring, and a channel hole is formed on the side of the valve cage.

[0011] Preferably, the valve body is a hollow spherical structure with holes at both ends. A connecting pipe is provided in front of the holes, and a connecting plate is provided at the end of the connecting pipe away from the valve body. The surface of the connecting plate has a plurality of circumferentially arrayed mounting holes.

[0012] Preferably, the mounting tube is fixedly installed on the upper end of the valve body. The end of the mounting tube away from the valve body has a mounting groove, and a mounting ring is provided in the mounting groove. One end of the mounting tube has a number of fixing screw holes, and the surface of the fixing plate has a number of holes. The holes are located directly above the fixing screw holes, and fixing screws are provided in the holes. Fixing screws are screwed to the fixing screw holes. A gasket is inserted between the mounting tube and the fixing plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The metal sealing structure for pre-opening control valves proposed in this utility model features a metal mating ring fixedly installed on the lower surface of the valve seat, which fits between the valve seat and the partition plate, achieving a good sealing effect. Additionally, an installation ring is inserted between the mounting pipe and the fixed plate, effectively preventing leakage at the connection between the fixed plate and the mounting pipe, thus avoiding any impact on the control valve's performance. Furthermore, the entire structure is made of metal, thus avoiding the problem of short service life for control valves. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of the valve cage of this utility model;

[0018] Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 for Figure 2 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Valve seat; 2. Metal mating ring; 3. Valve cage; 4. Valve body; 5. Divider plate; 6. Mounting pipe; 7. Mounting ring; 8. Fixing plate; 9. Snap ring; 10. Channel hole; 11. Connecting pipe; 12. Connecting plate; 13. Mounting hole; 14. Fixing screw; 15. Gasket. Detailed Implementation

[0021] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1-5 This utility model provides a technical solution: a metal sealing structure for a pre-opening regulating valve, the metal sealing structure for the pre-opening regulating valve includes: a valve seat 1, the valve seat 1 is in the form of a ring structure, the valve seat 1 is fixedly installed on the surface of the partition plate 5, a metal mating ring 2 is provided below the valve seat 1, and a valve cage 3 is provided above the valve seat 1.

[0023] Valve body 4, with an installation pipe 6 at the upper end of valve body 4, an installation ring 7 at the upper end of installation pipe 6, and a fixing plate 8 above the installation ring 7;

[0024] During use, a metal mating ring 2 is fixedly installed on the lower surface of the valve seat 1 and installed between it and the partition plate 5. The metal mating ring 2 can make the valve seat 1 and the partition plate 5 fit tightly, thereby achieving a good sealing effect. In addition, an installation ring 7 is inserted between the installation pipe 6 and the fixed plate 8. The installation ring 7 can effectively prevent leakage at the connection between the fixed plate 8 and the installation pipe 6, which would affect the performance of the regulating valve. Moreover, the whole is made of metal material, thus avoiding the problem of short service life of the regulating valve.

[0025] Example 2: Based on Example 1, in order to extend the service life of the regulating valve, a valve seat 1 is provided. The valve seat 1 is a ring-shaped structure. A metal mating ring 2 is fixedly installed on the outer wall of the valve seat 1. A retaining ring 9 is fixedly installed on the upper end of the valve seat 1. The inner wall of the valve seat 1 is a downwardly opening curved structure.

[0026] The partition plate 5 has an overall "S" shaped structure. A card hole is opened on the central surface of the partition plate 5, and the inner wall of the card hole is fixedly connected to the outer wall of the metal mating ring 2.

[0027] To prevent the sealing ring from aging and thus shortening the lifespan of the control valve, a free metal fitting ring 2 is installed between the valve seat 1 and the partition plate 5 to replace the sealing ring. The valve seat 1, the partition plate 5, and the metal fitting ring 2 are fixedly connected, which not only improves the sealing performance but also prevents the sealing ring from aging due to prolonged use and affecting the service life of the control valve.

[0028] Example 3: Based on Example 2, in order to ensure the sealing of the regulating valve, an installation tube 6 is provided. The installation tube 6 is fixedly installed on the upper end of the valve body 4. An installation groove is opened at the end of the installation tube 6 away from the valve body 4. An installation ring 7 is provided in the installation groove. Several fixing screw holes are opened at one end of the installation tube 6. Several holes are opened on the surface of the fixing plate 8. The holes are located directly above the fixing screw holes. A fixing screw 14 is provided in the hole. The fixing screw 14 is screwed to the fixing screw hole. A gasket 15 is inserted between the installation tube 6 and the fixing plate 8.

[0029] The valve body 4 has a hollow spherical structure. Holes are opened at both ends of the valve body 4. A connecting pipe 11 is provided in front of the holes. A connecting plate 12 is provided at the end of the connecting pipe 11 away from the valve body 4. Several mounting holes 13 in a circular array are opened on the surface of the connecting plate 12.

[0030] The valve cage 3 is a concentric cylindrical structure. The upper end of the valve cage 3 is inserted into the mounting tube 6. The lower end of the valve cage 3 has an annular groove on its inner wall. The surface of the annular groove is fixedly connected to the outer wall of the retaining ring 9. The valve cage 3 has a channel hole 10 on its side.

[0031] A gasket 15 is installed between the fixed plate 8 and the mounting pipe 6. The gasket 15 can completely seal the connection between the fixed plate 8 and the mounting pipe 6, preventing the connection from loosening after long-term use of the regulating valve, which would cause leakage and affect the operation of the regulating valve.

[0032] In actual use, a metal mating ring 2 is fixedly installed on the lower surface of the valve seat 1 and installed between it and the partition plate 5. The metal mating ring 2 can make the valve seat 1 and the partition plate 5 fit tightly, thereby achieving a good sealing effect. In addition, an installation ring 7 is inserted between the installation pipe 6 and the fixed plate 8. The installation ring 7 can effectively prevent leakage at the connection between the fixed plate 8 and the installation pipe 6, which would affect the performance of the regulating valve. Moreover, the whole is made of metal material, thus avoiding the problem of short service life of the regulating valve.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal sealing structure for a pre-opening control valve, characterized in that: The metal sealing structure for the pre-opening regulating valve includes: a valve seat (1), the valve seat (1) is an overall ring structure, the valve seat (1) is fixedly installed on the surface of the partition plate (5), a metal mating ring (2) is provided below the valve seat (1), and a valve cage (3) is provided above the valve seat (1). Valve body (4), with an installation tube (6) at the upper end of the valve body (4), an installation ring (7) at the upper end of the installation tube (6), and a fixing plate (8) above the installation ring (7).

2. The metal sealing structure for a pre-opening regulating valve according to claim 1, characterized in that: The valve seat (1) has an overall ring structure. A metal mating ring (2) is fixedly installed on the outer wall of the valve seat (1). A retaining ring (9) is fixedly installed on the upper end of the valve seat (1). The inner wall of the valve seat (1) has a downward-opening curved surface structure.

3. The metal sealing structure for a pre-opening regulating valve according to claim 1, characterized in that: The partition plate (5) has an overall "S" shaped structure. A card hole is provided on the central surface of the partition plate (5), and the inner wall of the card hole is fixedly connected to the outer wall of the metal mating ring (2).

4. The metal sealing structure for a pre-opening regulating valve according to claim 1, characterized in that: The valve cage (3) is a concentric cylindrical structure. The upper end of the valve cage (3) is inserted into the mounting tube (6). The lower end of the valve cage (3) has an annular groove on its inner wall. The surface of the annular groove is fixedly connected to the outer wall of the retaining ring (9). The valve cage (3) has a channel hole (10) on its side.

5. A metal sealing structure for a pre-opening regulating valve according to claim 1, characterized in that: The valve body (4) is a hollow spherical structure. Holes are provided at both ends of the valve body (4). A connecting pipe (11) is provided in front of the holes. A connecting plate (12) is provided at the end of the connecting pipe (11) away from the valve body (4). Several mounting holes (13) in a circular array are provided on the surface of the connecting plate (12).

6. The metal sealing structure for a pre-opening regulating valve according to claim 1, characterized in that: The mounting tube (6) is fixedly installed on the upper end of the valve body (4). The end of the mounting tube (6) away from the valve body (4) is provided with a mounting groove. A mounting ring (7) is provided in the mounting groove. A number of fixing screw holes are provided at one end of the mounting tube (6). A number of holes are provided on the surface of the fixing plate (8). The holes are located directly above the fixing screw holes. A fixing screw (14) is provided in the hole. A fixing screw hole is screwed to the outside of the fixing screw (14). A gasket (15) is inserted between the mounting tube (6) and the fixing plate (8).

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