Industrial furnace gas reversing valve

Abstract

The utility model discloses an industrial furnace gas reversing valve which comprises a valve body, the middle of the interior of the valve body is hollow, a valve element is clamped in the hollow interior of the valve body, a sealing plate is arranged at the top of the valve body, the middle of the bottom end face of the sealing plate extends towards the hollow portion of the valve body, and the valve element is arranged in the valve body. A sealing assembly is also arranged on the surface of the bottom of the extending position, mounting screw holes are formed in the surface of the sealing plate and the edge of the top end face of the valve body, fixing bolts are screwed into the mounting screw holes, and threads connected with the inner walls of the mounting screw holes in the valve body are formed in the bottoms of the fixing bolts; by means of the designed built-in spring, the fixing bolt can be quickly jacked up in the dismounting process of the fixing bolt, so that later dismounting is facilitated, meanwhile, the top of the fixing bolt can be sealed and closed in cooperation with the designed protection plug, invasion of external water vapor is avoided, and meanwhile the designed damping ring can improve the mounting sealing performance and the mounting stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial furnace gas reversing valves, and in particular relates to an industrial furnace gas reversing valve. Background Art

[0002] Industrial furnace gas reversing valves are directional control valves with two or more flow modes and two or more oil ports. They are valves that realize the communication, interruption, and reversal of hydraulic oil flow, as well as pressure unloading and sequential action control.

[0003] The existing industrial furnace gas reversing valve needs to be fixed with bolts during the installation of the sealing plate. However, in order to improve the efficiency of disassembly and assembly, threads are generally set at the bottom of the bolts. Although such bolts are convenient for disassembly and assembly, they are not easy to remove and are more troublesome to use. In addition, the top of the bolt is exposed to the outside and is easily affected by factors such as water vapor. After long-term use, rust will occur. There is also a certain gap between the existing valve core and the valve body. In actual use, this will affect the sealing of the entire industrial furnace gas reversing valve. Therefore, there are great limitations and there is room for improvement. Utility Model Content

[0004] The purpose of the utility model is to provide an industrial furnace gas reversing valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an industrial furnace gas reversing valve, comprising a valve body, the inner middle position of the valve body is hollow, and a valve core is stuck in the hollow interior, a sealing plate is provided on the top of the valve body, and the middle part of the bottom end face of the sealing plate extends toward the hollow part of the valve body, and a sealing component is also provided on the bottom surface of the extension, mounting screw holes are provided at the surface of the sealing plate and the edge of the top surface of the valve body, a fixing bolt is screwed into the inside of the mounting screw hole, and a thread is provided at the bottom of the fixing bolt for connection with the inner wall of the mounting screw hole on the valve body, and an internal spring is also placed inside the mounting screw hole on the valve body, the internal spring is abutted against the bottom end of the fixing bolt, and a protective component is also provided inside the mounting screw hole on the sealing plate.

[0006] Preferably, the protective component includes a protective plug, and a plurality of damping rings are provided on the surface of the protective plug, each of the damping rings is abutted against the inner wall of the mounting screw hole, a top groove is provided on the top surface of the protective plug, and a pull ring is installed on the inner bottom end surface of the top groove.

[0007] Preferably, the damping ring is a hollow frustum structure, and the diameter of the top surface of the damping ring is larger than the inner diameter of the mounting screw hole at the sealing plate.

[0008] Preferably, a sealing assembly is provided on the surface of the valve core, which includes annular grooves opened in the middle and bottom surfaces of the valve core, and a radial sealing ring is stuck in the inner side of each annular groove, and the radial sealing ring is against the hollow inner wall of the valve body.

[0009] Preferably, the longitudinal section of the radial sealing ring is a circular structure, and the diameter of the longitudinal section of the radial sealing ring is greater than the inner depth of the annular groove.

[0010] Preferably, a vacuum port and an air outlet are provided on the side of the valve body in sequence from top to bottom, wherein the vacuum port and the air outlet are both communicated with the hollow interior of the valve body.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The built-in spring can quickly lift the fixing bolt during removal, making it easier to remove it later. The protective plug can seal the top of the fixing bolt to prevent the intrusion of external moisture. The damping ring can also increase the sealing and stability of the installation.

[0013] 2. The designed radial sealing ring can seal the gap between the valve core and the valve body, thereby ensuring the sealing when closed, avoiding air leakage and ensuring normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a cross-sectional view of the protective plug of the utility model.

[0017] In the figure: 1. Valve body; 2. Valve core; 3. Sealing plate; 4. Radial sealing ring; 5. Air outlet; 6. Vacuum port; 7. Air inlet; 8. Mounting screw hole; 9. Built-in spring; 10. Fixing bolt; 11. Protective plug; 12. Damping ring; 13. Pull ring; 14. Top groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0019] See also Figures 1 to 3 The utility model provides a technical solution: an industrial furnace gas reversing valve, comprising a valve body 1, the middle position of the interior of the valve body 1 is hollow, and a valve core 2 is stuck in the hollow interior, a sealing plate 3 is provided on the top of the valve body 1, and the middle part of the bottom end surface of the sealing plate 3 extends toward the hollow part of the valve body 1, and a sealing component is also provided on the bottom surface of the extension, and mounting screw holes 8 are opened at the surface of the sealing plate 3 and the edge of the top surface of the valve body 1, and a fixing bolt 10 is screwed into the inside of the mounting screw hole 8, and the fixing bolt 10 is screwed in. The bottom is provided with a thread connected to the inner wall of the mounting screw hole 8 at the valve body 1, and a built-in spring 9 is placed inside the mounting screw hole 8 at the valve body 1. Through the designed built-in spring, the fixing bolt can be quickly lifted up during disassembly, thereby facilitating the later disassembly 9. At the same time, with the designed protective plug 11, the top of the fixing bolt 10 can be sealed and closed to avoid the intrusion of external water vapor. The built-in spring 9 is against the bottom end of the fixing bolt 10, and a protective component is also provided inside the mounting screw hole 8 at the sealing plate 3.

[0020] In this embodiment, preferably, the protective component includes a protective plug 11, and a plurality of damping rings 12 are provided on the surface of the protective plug 11. The designed damping rings 12 can increase the installation sealing and installation stability. Each damping ring 12 is against the inner wall of the mounting screw hole 8. A top groove 14 is provided on the top surface of the protective plug 11, and a pull ring 13 is installed on the inner bottom surface of the top groove 14 to facilitate the later removal of the protective plug 11.

[0021] In this embodiment, preferably, the damping ring 12 is a hollow frustum structure, and the diameter of the top surface of the damping ring 12 is larger than the inner diameter of the mounting screw hole 8 at the sealing plate 3, so that it can be deformed to produce extrusion.

[0022] In this embodiment, preferably, a sealing assembly is provided on the surface of the valve core 2, and the sealing assembly includes annular grooves opened in the middle and bottom surfaces of the valve core 2, and a radial sealing ring 4 is inserted into the inner side of each annular groove. The designed radial sealing ring 4 can seal the gap between the valve core 2 and the valve body 1, thereby ensuring the sealing when closed, avoiding air leakage, and ensuring the normal operation. The radial sealing ring 4 is against the hollow inner wall of the valve body 1.

[0023] In this embodiment, preferably, the longitudinal section of the radial sealing ring 4 is a circular structure, and the diameter of the longitudinal section of the radial sealing ring 4 is greater than the inner depth of the annular groove.

[0024] In this embodiment, preferably, a vacuum port 6 and an air outlet 5 are sequentially opened on the side of the valve body 1 from top to bottom, wherein the vacuum port 6 and the air outlet 5 are both communicated with the hollow interior of the valve body 1 .

[0025] The working principle and use process of this utility model: When using this utility model, refer to Figure 2 , move the valve core 2 toward the position of the sealing plate 3, and make the radial sealing ring 4 at the bottom of the air inlet 7 between the vacuum port 6 and the air outlet 5, block the channel between the vacuum port 6 and the air outlet 5, and make the air inlet 7 and the air outlet 5 connected. Then the external air supply equipment transmits the gas from the air inlet 7 to the equipment connected to the air outlet 5. When the gas in the equipment connected to the air outlet 5 is filled to the specified value, the valve core 2 is returned to its original position, so that the air inlet 7 is closed by the bottom of the valve core 2, and the secondary seal is completed by the radial sealing ring 4. At the same time, the air outlet 5 is connected to the vacuum port 6. Since the end of the vacuum port 6 is connected to the vacuum equipment, The gas content between the air outlet 5 and the vacuum port 6 is constant, so the air tightness of the external equipment of the air outlet 5 can be tested; during installation, the fixing bolt 10 is inserted into the mounting screw hole 8. When the fixing bolt 10 is screwed in, the built-in spring 9 will be squeezed, and then the protective plug 11 is inserted into the mounting screw hole 8. During insertion, the damping ring 12 will be against the inner wall of the mounting screw hole 8, thereby completing the sealing and fixation of the mounting screw hole 8 and protecting the fixing bolt 10. During later disassembly, the protective plug 11 is pulled out, and then the fixing bolt 10 is unscrewed. During unscrewing, the fixing bolt 10 is lifted up by the rebound of the built-in spring 9, thereby completing the separation.

[0026] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An industrial furnace gas reversing valve, comprising a valve body (1), characterized in that: The middle position of the interior of the valve body (1) is hollow, and a valve core (2) is stuck in the hollow interior. A sealing plate (3) is provided on the top of the valve body (1), and the middle part of the bottom end surface of the sealing plate (3) extends toward the hollow part of the valve body (1), and a sealing component is also provided on the bottom surface of the extension. A mounting screw hole (8) is provided on the surface of the sealing plate (3) and the edge of the top surface of the valve body (1). A fixing bolt (10) is screwed into the inside of the mounting screw hole (8). The bottom of the fixing bolt (10) is provided with a thread connected to the inner wall of the mounting screw hole (8) at the valve body (1), and an internal spring (9) is placed inside the mounting screw hole (8) at the valve body (1). The internal spring (9) is against the bottom end of the fixing bolt (10), and a protective component is also provided inside the mounting screw hole (8) at the sealing plate (3).

2. The industrial furnace gas reversing valve according to claim 1, characterized in that: The protective assembly includes a protective plug (11), a surface of which is provided with a plurality of damping rings (12), each of which abuts against the inner wall of the mounting screw hole (8), a top groove (14) is provided on the top surface of the protective plug (11), and a pull ring (13) is installed on the inner bottom surface of the top groove (14).

3. The industrial furnace gas reversing valve according to claim 2, characterized in that: The damping ring (12) is a hollow truncated cone structure, and the diameter of the top surface of the damping ring (12) is larger than the inner diameter of the mounting screw hole (8) at the sealing plate (3).

4. The industrial furnace gas reversing valve according to claim 1, characterized in that: The surface of the valve core (2) is provided with a sealing assembly, which includes annular grooves provided on the middle and bottom surfaces of the valve core (2), and a radial sealing ring (4) is inserted into the inner side of each annular groove, and the radial sealing ring (4) abuts against the hollow inner wall of the valve body (1).

5. The industrial furnace gas reversing valve according to claim 4, characterized in that: The longitudinal section of the radial sealing ring (4) is a circular structure, and the diameter of the longitudinal section of the radial sealing ring (4) is greater than the inner depth of the annular groove.

6. The industrial furnace gas reversing valve according to claim 1, characterized in that: The side of the valve body (1) is provided with a vacuum port (6) and an air outlet (5) in sequence from top to bottom, wherein the vacuum port (6) and the air outlet (5) are both communicated with the hollow interior of the valve body (1).

Images