Multi-stage depressurization labyrinth type pneumatic control valve

Abstract

The utility model relates to the technical field of adjusting valves, in particular to a multistage pressure reduction labyrinth type pneumatic adjusting valve which comprises a valve body, a through groove is formed in the valve body, the valve body is connected with a first installation block in a sliding mode through the through groove, and fixing lugs are correspondingly installed on the end face and the bottom of the first installation block and located on the left side and the right side. The fixing lugs are connected with screws through connecting holes, the screws are connected with threaded sleeves through threads, the four threaded sleeves are connected through second mounting blocks, inner grooves are formed in the first mounting blocks and the second mounting blocks, a valve deck is mounted on the end face of the valve body through bolts, and a valve rod is rotationally connected to the inner wall of the valve deck. By arranging the first mounting block, the second mounting block and the like, the problems that when an existing disc is dismounted, the whole valve body needs to be dismounted, then the disc can be taken down, and time and labor are wasted are solved, rapid dismounting and mounting of the disc are achieved, and the maintenance and replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a multi-stage step-down labyrinth pneumatic regulating valve. Background Technique

[0002] The multi-stage step-down labyrinth pneumatic regulating valve is a special industrial automation control device applied to high pressure difference conditions, which can effectively control the fluid flow rate and pressure. It adopts a labyrinth structure design and realizes the precise control of high-speed fluid through multi-stage step-down, avoiding adverse phenomena such as cavitation, noise and vibration. The multi-stage step-down labyrinth pneumatic regulating valve is mainly composed of a valve body, a valve seat, a throttling component, a pneumatic actuator and other main components in terms of structure.

[0003] After the multi-stage step-down labyrinth pneumatic regulating valve is used for a long time, the labyrinth discs will be blocked or corroded, and the discs need to be repaired and replaced. When the existing discs are disassembled, the whole valve body needs to be disassembled before the discs can be removed, which is time-consuming and laborious, and the repair and replacement efficiency is low. Therefore, a multi-stage step-down labyrinth pneumatic regulating valve is needed to improve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a multi-stage step-down labyrinth pneumatic regulating valve to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multi-stage step-down labyrinth pneumatic regulating valve, including a valve body, a through groove is opened on the valve body, the valve body is slidably connected with a first mounting block through the through groove, fixing ears are correspondingly installed on the end face and bottom of the first mounting block and on the left and right sides, the fixing ears are connected with screws through connection holes, the screws are threadedly connected with threaded sleeves, the four threaded sleeves are connected through a second mounting block, and inner grooves are opened on the first mounting block and the second mounting block;

[0007] The end face of the valve body is installed with a valve cover through bolts, a valve rod is rotatably connected to the inner wall of the valve cover, a valve core is arranged at the lower end of the valve rod, a base is slidably connected to the outer wall of the valve core, a first labyrinth disc is connected to the end face of the base and behind the valve core, a second labyrinth disc is connected to the end face of the base and in front of the valve core, and a disc pressing cage is slidably connected to the outer wall of the base.

[0008] As a preferred scheme of the utility model, the valve body is slidably connected with the second mounting block through the through groove.

[0009] As a preferred solution of the present utility model, the first labyrinth disc and the second labyrinth disc are arranged as half-cylindrical discs, and the first labyrinth disc and the second labyrinth disc are connected together to form a complete disc.

[0010] As a preferred solution of the present utility model, sealing rings are provided at the joints of the first mounting block, the fixing ear and the valve body.

[0011] As a preferred solution of the present utility model, a first limiting groove is provided on the valve body corresponding to the fixing ear, and the valve body is slidably connected to the fixing ear through the first limiting groove. A second mounting block is provided on the valve body corresponding to the threaded sleeve, and the valve body is slidably connected to the threaded sleeve through the second limiting groove.

[0012] As a preferred solution of the present utility model, through holes are provided on the side walls and bottoms of the first mounting block and the second mounting block, and the first mounting block and the second mounting block are arranged to be adapted to each other.

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

[0014] In the present utility model, by providing a first mounting block, a second mounting block, etc. in a multi-stage step-down labyrinth pneumatic control valve, remove the screws, take the first mounting block and the second mounting block out of the through groove, take out the first labyrinth disc and the second labyrinth disc, perform quick disassembly on them, and perform maintenance or replacement. By providing a first mounting block, a second mounting block, etc., the problem that the existing disc needs to disassemble the entire valve body before the disc can be removed, which is time-consuming and laborious, is solved, and the quick disassembly and installation of the disc are realized, improving the maintenance and replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a three-dimensional sectional structural schematic diagram of the present utility model;

[0017] Figure 3 is an exploded structural schematic diagram of the present utility model.

[0018] In the figure: 1, valve body; 2, through groove; 3, first mounting block; 4, fixing ear; 5, screw; 6, threaded sleeve; 7, second mounting block; 8, inner groove; 9, valve cover; 10, valve stem; 11, valve core; 12, base; 13, first labyrinth disc; 14, second labyrinth disc; 15, disc pressing cage; 16, first limiting groove; 17, second limiting groove; 18, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant accompanying drawings. Several embodiments of the present invention are given in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] Embodiment: Please refer to Figures 1-3 A multi-stage step-down labyrinth pneumatic control valve as shown, including a valve body 1, a through groove 2 is opened on the valve body 1, the valve body 1 is slidably connected with a first mounting block 3 through the through groove 2, fixing ears 4 are correspondingly mounted on the end face and bottom of the first mounting block 3 and on the left and right sides, the fixing ears 4 are connected with screws 5 through connection holes, the screws 5 are threadedly connected with threaded sleeves 6, the four threaded sleeves 6 are connected through a second mounting block 7, and inner grooves 8 are opened on the first mounting block 3 and the second mounting block 7;

[0024] The end face of the valve body 1 is installed with a valve cover 9 through bolts. A valve rod 10 is rotatably connected to the inner wall of the valve cover 9. A valve core 11 is arranged at the lower end of the valve rod 10. A base 12 is slidably connected to the outer wall of the valve core 11. A first labyrinth disc 13 is connected to the end face of the base 12 and located at the rear side of the valve core 11. A second labyrinth disc 14 is connected to the end face of the base 12 and located at the front side of the valve core 11. A disc cage 15 is slidably connected to the outer wall of the base 12. Remove the screw 5, take the first mounting block 3 and the second mounting block 7 out of the through groove 2, take out the first labyrinth disc 13 and the second labyrinth disc 14, perform quick disassembly on them, and perform maintenance or replacement. By setting the first mounting block 3 and the second mounting block 7, etc., the problem that the existing disc needs to disassemble the entire valve body before the disc can be removed during disassembly, which is time-consuming and laborious, is solved. The quick disassembly and installation of the disc are realized, and the maintenance and replacement efficiency are improved;

[0025] In this embodiment, referring to Figure 2 and 3 as shown, the valve body 1 is slidably connected to the second mounting block 7 through the through groove 2; the first labyrinth disc 13 and the second labyrinth disc 14 are arranged as half-cylindrical discs, and the first labyrinth disc 13 and the second labyrinth disc 14 are connected together as a complete disc;

[0026] Among them, the first labyrinth disc 13 and the second labyrinth disc 14 are arranged as half-cylindrical discs, which is convenient for realizing the quick disassembly and installation of the disc from the valve body 1, and improves the maintenance and replacement speed of the disc;

[0027] In this embodiment, referring to Figure 1 and 2 as shown, seals are provided at the connections of the first mounting block 3, the fixed ear 4 and the valve body 1; a first limit groove 16 is provided on the valve body 1 corresponding to the fixed ear 4, and the valve body 1 is slidably connected to the fixed ear 4 through the first limit groove 16. A second mounting block 7 is provided on the valve body 1 corresponding to the threaded sleeve 6, and the valve body 1 is slidably connected to the threaded sleeve 6 through the second limit groove 17; through holes 18 are provided on the side walls and bottoms of the first mounting block 3 and the second mounting block 7, and the first mounting block 3 and the second mounting block 7 are arranged to be adapted to each other;

[0028] Among them, seals are provided at the connections of the first mounting block 3, the fixed ear 4 and the valve body 1 to keep the inside of the valve body 1 in a sealed state, so that the regulating valve can normally realize the regulating function;

[0029] Working principle: When the multi-stage step-down labyrinth pneumatic control valve is in use, by setting the first mounting block 3 and the second mounting block 7, etc., it solves the problem that the existing disc needs to disassemble the entire valve body before the disc can be removed during disassembly, which is time-consuming and laborious. It realizes the rapid disassembly and installation of the disc, improves the maintenance and replacement efficiency, and solves the problem that the existing disc needs to disassemble the entire valve body before the disc can be removed during disassembly, which is time-consuming and laborious. It realizes the rapid disassembly and installation of the disc, improves the maintenance and replacement efficiency.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage pressure-reducing labyrinth-type pneumatic regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a through groove (2), and the valve body (1) is slidably connected to a first mounting block (3) through the through groove (2); the end surface and the bottom of the first mounting block (3) and the left and right sides thereof are correspondingly provided with fixing ears (4); the fixing ears (4) are connected to screws (5) through connecting holes; the screws (5) are connected to threaded sleeves (6) through threads; the four threaded sleeves (6) are connected through a second mounting block (7); and the first mounting block (3) and the second mounting block (7) are provided with inner grooves (8); A valve cover (9) is mounted on the end surface of the valve body (1) by means of bolts, a valve stem (10) is rotatably connected to the inner wall of the valve cover (9), a valve core (11) is arranged at the lower end of the valve stem (10), a base (12) is slidably connected to the outer wall of the valve core (11), a first labyrinth disc (13) is connected to the end surface of the base (12) and located at the rear side of the valve core (11), a second labyrinth disc (14) is connected to the end surface of the base (12) and located at the front side of the valve core (11), and a disc pressure cage (15) is slidably connected to the outer wall of the base (12).

2. The multi-stage pressure-reducing labyrinth-type pneumatic regulating valve according to claim 1, characterized in that: The valve body (1) is slidably connected to the second mounting block (7) via the through groove (2).

3. The multi-stage pressure-reducing labyrinth-type pneumatic regulating valve according to claim 1, characterized in that: The first labyrinth disc (13) and the second labyrinth disc (14) are arranged as half cylindrical discs, and the first labyrinth disc (13) and the second labyrinth disc (14) are connected together to form a complete disc.

4. The multi-stage pressure-reducing labyrinth-type pneumatic regulating valve according to claim 1, characterized in that: A sealing ring is provided at the connection between the first mounting block (3), the fixing ear (4) and the valve body (1).

5. The multi-stage pressure-reducing labyrinth-type pneumatic regulating valve according to claim 1, characterized in that: A first limiting groove (16) is provided on the valve body (1) and corresponds to the fixing ear (4), and the valve body (1) is slidably connected to the fixing ear (4) via the first limiting groove (16). A second mounting block (7) is provided on the valve body (1) and corresponds to the threaded sleeve (6), and the valve body (1) is slidably connected to the threaded sleeve (6) via the second limiting groove (17).

6. The multi-stage pressure-reducing labyrinth-type pneumatic regulating valve according to claim 1, characterized in that: The side walls and the bottom of the first mounting block (3) and the second mounting block (7) are both provided with through holes (18), and the first mounting block (3) and the second mounting block (7) are adapted to be matched.

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