A connection stable safety circulation valve

Abstract

The present invention provides a connection-stable safety circulation valve, which relates to the field of valves and comprises a safety valve body, wherein the front end of the safety valve body is fixedly connected with a docking main pipe for connecting to a valve body connecting pipe; a docking secondary pipe for being inserted into the valve body connecting pipe is slidably installed inside the docking main pipe; a supporting positioning spring is embedded between the rear wall of the docking secondary pipe and the inner wall of the safety valve body; a reinforcement slot is provided on the left and right sides of the docking secondary pipe; a threaded locking groove is provided on the upper and lower sides of the docking secondary pipe; a mounting support A is fixedly installed on the circumferential outer wall of the docking main pipe; and a plug-in connector is fixedly installed on the mounting support A. The safety circulation valve has both good connection stability and convenient operation, and solves the problem that the steps for installing and disassembling the circulation valve are relatively trivial due to too many connection methods, thereby reducing the convenience of using the safety circulation valve.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a connection-stable safety circulation valve. Background Art

[0002] Safety valves are widely used as overpressure protection devices in pipelines of non-corrosive media and corrosive media such as water, oil, natural gas, steam, etc. Safety circulation valves have the advantages of small flow resistance, flexible opening and closing, long life, safety and reliability, and compact structure.

[0003] When existing safety circulation valves are connected to pipelines, some are connected by threaded connection. The connection method between the circulation valve and the pipeline is single, resulting in insufficient connection stability of the circulation valve after connection. Some safety circulation valves use multiple connection methods to ensure the stability of the circulation valve after connection to the pipeline. However, due to too many connection methods, the steps for installing and disassembling the circulation valve are relatively trivial, which reduces the convenience of using the safety circulation valve. Summary of the invention

[0004] In view of this, the present invention provides a connection-stable safety circulation valve to solve the problem that some safety circulation valves adopt multiple connection methods to ensure the stability of the circulation valve after being connected to the pipeline, but due to too many connection methods, the steps for installing and disassembling the circulation valve are relatively trivial, which reduces the convenience of using the safety circulation valve.

[0005] The present invention provides a connection-stable safety circulation valve, which specifically includes: a safety valve body and a valve body connecting pipe, wherein the front end of the safety valve body is fixedly connected with a docking main pipe for connecting to the valve body connecting pipe; a docking secondary pipe for being inserted into the valve body connecting pipe is slidably installed inside the docking main pipe; a supporting positioning spring is embedded between the rear wall of the docking secondary pipe and the inner wall of the safety valve body; a reinforcement slot is provided on the left and right sides of the docking secondary pipe; a threaded locking groove is provided on the upper and lower sides of the docking secondary pipe; a mounting support A is fixedly installed on the circumferential outer wall of the docking main pipe; a plug-in connector is fixedly installed on the mounting support A; a twisting rack is fixedly installed on the inner side of the plug-in connector; a sealing rubber component for sealing is installed on the rear end of the valve body connecting pipe.

[0006] Furthermore, an entry lifting groove is provided at the front end of the plug-in connector; the entry lifting groove is an inclined structure; fixed slots are provided on the left and right sides of the interior of the plug-in connector; the fixed slot is connected to the highest end of the entry lifting groove; installation trigger plates are fixedly installed on the left and right sides of the plug-in connector; the installation trigger plate is an L-shaped structure; a trigger tension column is fixedly installed on the inner side of the installation trigger plate; the trigger tension column is a cylindrical structure.

[0007] Further, locking bolts are threadedly connected to the upper and lower sides of the valve body connecting pipe; a torsion gear is fixedly installed at the outer end of the locking bolt; after the insertion connector moves forward to a certain position, the torsion rack will be meshed and connected with the torsion gear; clamping inserts are slidably installed on the left and right sides of the valve body connecting pipe; the clamping inserts are of rectangular structure; a follower sliding frame is fixedly installed at the outer end of the clamping inserts; the follower sliding frame is of U-shaped structure; follower tension grooves are formed on the upper and lower sides of the follower sliding frame.

[0008] Further, the follower tension groove is of inclined structure; after the insertion connector moves forward to a certain position, the trigger tension column will slide into the interior of the follower tension groove; one end of a lateral restoring spring is embedded and installed inside the follower sliding frame; the other end of the lateral restoring spring is embedded and installed on the outer wall of the valve body connecting pipe; a secondary pipe stopper for limiting the insertion progress of the secondary pipe is fixedly installed inside the valve body connecting pipe; the secondary pipe stopper is of circular ring structure; mounting support B is fixedly installed on the circumferential outer wall of the valve body connecting pipe; travel guiding grooves are formed on the left and right sides of the mounting support B.

[0009] Further, a fixed clamping column is slidably installed inside the travel guiding groove; the fixed clamping column is of cylindrical structure; a sliding and pulling transmission frame is fixedly installed on the outer side of the fixed clamping column; the sliding and pulling transmission frame is of U-shaped structure; one end of a vertical restoring spring is embedded and installed inside the sliding and pulling transmission frame; the other end of the vertical restoring spring is embedded and installed on the outer side wall of the mounting support B; after the insertion connector moves forward to a certain position, the fixed clamping column will slide into the interior of the fixed clamping groove under the action of entering the lifting groove.

[0010] Further, after the trigger tension column enters the interior of the follower tension groove, when the trigger tension column continues to move forward, it will drive the follower sliding frame and the clamping inserts to move relatively inwards by using the inclined structure of the follower tension groove; after the clamping inserts move inwards to a certain position, the clamping inserts will insert into the interior of the strengthening slot; after the torsion rack is meshed with the torsion gear, when the torsion rack continues to move forward, it will drive the locking bolt to rotate under the cooperation of the torsion gear; after the locking bolt rotates, the locking bolt will rotate and lock into the interior of the thread locking groove.

[0011] A connection-stable type safety circulation valve provided by the present invention has the following beneficial effects:

[0012] The connection mode between this circulation valve and the valve body connecting pipe has three positioning modes: insertion clamping and fixing, threaded locking and fixing, and clamping and positioning fixing. Through the mutual cooperation of the three positioning modes, the connection stability effect between the safety circulation valve and the valve body connecting pipe can be fully ensured. Compared with the traditional threaded connection mode, this circulation valve will not have the situation of rotational loosening, and the connection stability is better.

[0013] When connecting the circulation valve and the valve body connecting pipe, it is only necessary to insert the docking secondary pipe into the interior of the valve body connecting pipe, and then fully dock the docking main pipe with the valve body connecting pipe. During this process, the plug-in clamping fixation, thread locking fixation and snap-in positioning fixation will be automatically achieved. The entire connection and fixing process is simple and convenient, which makes the safety circulation valve have both good connection stability and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0015] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0016] In the attached picture:

[0017] Figure 1 It is a structural schematic diagram of an incompletely inserted state of a butt-joined main pipe and a valve body connecting pipe according to an embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the un-inserted state of the main butt-jointed pipe and the valve body connecting pipe according to an embodiment of the present invention;

[0019] Figure 3 2 is a schematic diagram of a half-section structure of a valve body connecting pipe according to an embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of a half-section structure of a valve body connecting pipe and a sealing rubber component of an embodiment of the present invention;

[0021] Figure 5 2 is a schematic diagram of a half-section structure of a butt joint main pipe according to an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the plug-in connector and the fixed clamping column structure of an embodiment of the present invention;

[0023] Figure 7 It is a schematic diagram of the plug-in connector and the clamping plug block structure of an embodiment of the present invention;

[0024] Figure 8 It is a schematic diagram of the structure of the mounting support A and the mounting support B according to an embodiment of the present invention.

[0025] Reference numerals list

[0026] 1. Safety valve body; 2. Docking the main pipe; 3. Docking the secondary pipe; 4. Support positioning spring; 5. Strengthening slot; 6. Threaded locking slot; 7. Install support A; 8. Insert connector; 9. Twist rack; 10. Enter lifting slot; 11. Fix card slot; 12. Install trigger plate; 13. Trigger tension column; 14. Valve body connecting pipe; 15. Sealant; 16. Locking bolt; 17. Twist gear; 18. Clamping plug; 19. Follow-up slide frame; 20. Follow-up tension groove; 21. Horizontal return spring; 22. Secondary pipe limiter; 23. Install support B; 24. Travel guide groove; 25. Fix card column; 26. Sliding transmission frame; 27. Vertical return spring. DETAILED DESCRIPTION

[0027] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0028] Please refer to Figures 1 to 8 As shown:

[0029] Embodiment 1: The present invention provides a connection-stable safety circulation valve, comprising a safety valve body 1 and a valve body connecting pipe 14, wherein the front end of the safety valve body 1 is fixedly connected with a docking main pipe 2 for connecting with the valve body connecting pipe 14; a docking secondary pipe 3 for inserting into the valve body connecting pipe 14 is slidably installed inside the docking main pipe 2; a supporting positioning spring 4 is embedded between the rear wall of the docking secondary pipe 3 and the inner wall of the safety valve body 1, and the arrangement of the supporting positioning spring 4 is to facilitate the positioning of the docking secondary pipe 3 inside the docking main pipe 2; a reinforcing slot 5 is provided on the left and right sides of the docking secondary pipe 3; a threaded locking groove 6 is provided on the upper and lower sides of the docking secondary pipe 3; an installation support A7 is fixedly installed on the circumferential outer wall of the docking main pipe 2, and the main function of the installation support A7 is to insert the connector 8 is installed; a plug-in connector 8 is fixedly installed on the mounting support A7, and the plug-in connector 8 is provided to facilitate the installation of the twist rack 9; a twist rack 9 is fixedly installed on the inner side of the plug-in connector 8; a sealing rubber member 15 for sealing is installed at the rear end of the valve body connecting tube 14, and the sealing rubber member 15 is made of rubber. When the main pipe 2 is docked with the valve body connecting tube 14, the valve body connecting tube 14 will cooperate with the main pipe 2 to extrude the sealing rubber member 15, thereby improving the connection sealing performance between the valve body connecting tube 14 and the safety valve body 1; an entry lifting groove 10 is provided at the front end of the plug-in connector 8; the entry lifting groove 10 is an inclined structure; fixed card grooves 11 are provided on the left and right sides of the interior of the plug-in connector 8; the fixed card groove 11 is connected to the highest end of the entry lifting groove 10.

[0030] By manually pushing the main docking pipe 2, insert the secondary docking pipe 3 into the interior of the valve body connecting pipe 14, so that the front end of the secondary docking pipe 3 fully abuts against the secondary pipe stopper 22. At this time, the front end of the main docking pipe 2 will contact the rear end of the sealing rubber part 15. At this time, the rotary rack 9 will engage with the rotary gear 17. Then, continue to manually push the main docking pipe 2. At this time, since the secondary docking pipe 3 is limited by the secondary pipe stopper 22, when continuing to push the main docking pipe 2, the main docking pipe 2 itself will drive the mounting support part A7, the inserted connection part 8 and the rotary rack 9 to move forward. During the movement, the rotary rack 9 will drive the rotary gear 17 and the locking bolt 16 to rotate, so that the locking bolt 16 is inserted into the internal thread lock groove 6 by rotation to implement the first step of fixing the safety valve body 1 and the valve body connecting pipe 14.

[0031] Embodiment 2: The present invention provides a connection-stable safety circulation valve, which further includes mounting trigger plates 12 fixedly installed on the left and right sides of the inserted connection part 8. The mounting trigger plates 12 are provided for mounting the trigger tension column 13; the mounting trigger plates 12 are of an L-shaped structure; the inner side of the mounting trigger plates 12 is fixedly installed with the trigger tension column 13. The trigger tension column 13 is provided for facilitating the triggering of the follower sliding frame 19; the trigger tension column 13 is of a cylindrical structure; the upper and lower sides of the valve body connecting pipe 14 are threadedly connected with locking bolts 16. The locking bolts 16 are provided for facilitating the threaded clamping connection of the secondary docking pipe 3; the outer ends of the locking bolts 16 are fixedly installed with rotary gears 17; after the inserted connection part 8 moves forward to a certain position, the rotary rack 9 will be engaged and connected with the rotary gear 17; the left and right sides of the valve body connecting pipe 14 are slidably installed with clamping inserts 18; the clamping inserts 18 are of a rectangular structure; the outer ends of the clamping inserts 18 are fixedly installed with follower sliding frames 19; the follower sliding frames 19 are of a U-shaped structure; the upper and lower sides of the follower sliding frames 19 are provided with follower tension grooves 20; the follower tension grooves 20 are of an inclined structure; after the inserted connection part 8 moves forward to a certain position, the trigger tension column 13 will slide into the interior of the follower tension groove 20; one end of a lateral restoring spring 21 is embedded and installed on the inner side of the follower sliding frame 19; the other end of the lateral restoring spring 21 is embedded and installed on the outer wall of the valve body connecting pipe 14.

[0032] After the front end of the main pipe 2 is in contact with the rear end of the sealing rubber part 15, the trigger tension column 13 will also enter the inside of the follower tension groove 20. Therefore, when the main pipe 2 drives the installation support part A7 and the inserted connecting part 8 to move forward continuously, the inserted connecting part 8 will also drive the installation trigger plate 12 and the trigger tension column 13 to move forward, so that the trigger tension column 13 moves along the follower tension groove 20. During the movement, the trigger tension column 13 will use the inclined structure of the follower tension groove 20 to start pulling the follower sliding frame 19 and the clamping insert 18 inward, so that the clamping insert 18 is inserted into the inside of the strengthening slot 5, thereby implementing the second fixation on the safety valve body 1 and the valve body connecting pipe 14.

[0033] Embodiment 3: The present invention provides a connection-stable safety circulation valve, which further includes a secondary pipe limiting part 22 fixedly installed inside the valve body connecting pipe 14 for limiting the insertion progress of the secondary pipe 3; the secondary pipe limiting part 22 is of an annular structure; an installation support part B23 is fixedly installed on the circumferential outer wall of the valve body connecting pipe 14; travel guide grooves 24 are opened on the left and right sides of the installation support part B23; a fixed clamping column 25 is slidably installed inside the travel guide groove 24; the fixed clamping column 25 is of a cylindrical structure; a sliding and pulling transmission frame 26 is fixedly installed on the outer side of the fixed clamping column 25; the sliding and pulling transmission frame 26 is of a U-shaped structure; one end of a vertical restoring spring 27 is embedded and installed inside the inner side of the sliding and pulling transmission frame 26; the other end of the vertical restoring spring 27 is embedded and installed on the outer side wall of the installation support part B23; after the inserted connecting part 8 moves forward to a certain position, the fixed clamping column 25 will slide into the inside of the fixed clamping groove 11 under the action of entering the lifting groove 10; after the trigger tension column 13 enters the inside of the follower tension groove 20, when the trigger tension column 13 continues to move forward, it will drive the follower sliding frame 19 and the clamping insert 18 to move relatively inward by using the inclined structure of the follower tension groove 20; after the clamping insert 18 moves inward to a certain position, the clamping insert 18 will be inserted into the inside of the strengthening slot 5; after the rotating rack 9 is engaged with the rotating gear 17, when the rotating rack 9 continues to move forward, it will drive the locking bolt 16 to rotate under the cooperation of the rotating gear 17; after the locking bolt 16 rotates, the locking bolt 16 will be rotated and locked into the inside of the threaded locking groove 6.

[0034] When the main pipe 2 drives the installation support part A7 and the inserted connecting part 8 to move forward, the fixed clamping column 25 will enter the inside of the entering lifting groove 10. Furthermore, when the inserted connecting part 8 moves forward, the fixed clamping column 25 will drive the sliding and pulling transmission frame 26 to move upward along the travel guide groove 24 by using the inclined structure of the entering lifting groove 10. After the fixed clamping column 25 moves to the highest point of the entering lifting groove 10, the fixed clamping column 25 will descend along the travel guide groove 24 under the action of the vertical restoring spring 27, so that the fixed clamping column 25 is clamped into the inside of the fixed clamping groove 11, limiting the inserted connecting part 8, and further implementing the second fixation on the safety valve body 1 and the valve body connecting pipe 14.

[0035] Specific installation method of the safety circulation valve: During installation, first push the docking main pipe 2 manually to insert the docking secondary pipe 3 into the interior of the valve body connecting pipe 14, so that the front end of the docking secondary pipe 3 is fully in contact with the secondary pipe limiter 22. At this time, the front end of the docking main pipe 2 will contact the rear end of the sealing rubber part 15, and the twist rack 9 will mesh with the twist gear 17. Then continue to push the docking main pipe 2 manually. At this time, since the docking secondary pipe 3 is limited by the secondary pipe limiter 22, when continuing to push the docking main pipe 2, the docking main pipe 2 itself will drive the installation support The component A7, the plug-in connector 8 and the twist rack 9 move forward. During the movement, the twist rack 9 drives the twist gear 17 and the locking bolt 16 to rotate, so that the locking bolt 16 is inserted into the inside of the thread lock groove 6 by rotation locking, and the first step of fixing the safety valve body 1 and the valve body connecting pipe 14 is implemented. After the front end of the docking main pipe 2 contacts the rear end of the sealing rubber component 15, the trigger tension column 13 will also enter the inside of the follow-up tension groove 20. Therefore, when the docking main pipe 2 drives the installation support component A7 and the plug-in connector 8 to continue to move forward, the plug-in connector 8 will also drive the safety valve body 1 and the valve body connecting pipe 14 to fix the safety valve body 1 and the valve body connecting pipe 14. The trigger plate 12 and the trigger tension column 13 are installed and moved forward, so that the trigger tension column 13 moves along the follower tension groove 20. During the movement, the trigger tension column 13 will use the inclined structure of the follower tension groove 20 to start pulling the follower slide frame 19 and the clamping plug 18 inward, so that the clamping plug 18 is inserted into the interior of the reinforced slot 5, thereby implementing the second step of fixing the safety valve body 1 and the valve body connecting pipe 14, and when the main pipe 2 is connected to drive the installation support A7 and the plug-in connector 8 to move forward, the fixing clamp column 25 will enter the interior of the lifting groove 10, and then when the plug-in connector 8 is inserted into the reinforcing slot 5, the fixing clamp column 25 will enter the interior of the lifting groove 10. When moving forward, the fixed column 25 will use the inclined structure of entering the lifting groove 10 to drive the sliding transmission frame 26 to move upward along the travel guide groove 24. After the fixed column 25 moves to the commanding height of entering the lifting groove 10, the fixed column 25 will descend along the travel guide groove 24 under the action of the vertical restoring spring 27, so that the fixed column 25 is inserted into the interior of the fixed groove 11, so that the fixed column 25 limits the plug-in connector 8, and then implements the second step of fixing the safety valve body 1 and the valve body connecting pipe 14, thereby realizing a stable connection between the safety valve body 1 and the valve body connecting pipe 14.

Claims

1. A connection-stable safety circulation valve, comprising: Safety valve body (1) and valve body connecting pipe (14), the front end of the safety valve body (1) is fixedly connected with a butt main pipe (2); a butt secondary pipe (3) is slidably installed inside the butt main pipe (2); a support positioning spring (4) is embedded between the rear wall of the butt secondary pipe (3) and the inner wall of the safety valve body (1); characterized in that, reinforcing slots (5) are opened on the left and right sides of the butt secondary pipe (3); threaded locking grooves (6) are opened on the upper and lower sides of the butt secondary pipe (3); an installation support member A (7) is fixedly installed on the circumferential outer wall of the butt main pipe (2); an insertion connecting member (8) is fixedly installed on the installation support member A (7); a rotary rack (9) is fixedly installed on the inner side of the insertion connecting member (8); a sealing rubber member (15) is installed at the rear end of the valve body connecting pipe (14); The front end of the insertion connecting member (8) is provided with an inclined structure entry lifting groove (10); fixed card slots (11) are opened on the left and right sides inside the insertion connecting member (8); the fixed card slots (11) communicate with the highest end of the entry lifting groove (10); L-shaped installation trigger plates (12) are fixedly installed on the left and right sides of the insertion connecting member (8); a cylindrical trigger tension column (13) is fixedly installed on the inner side of the installation trigger plate (12); locking bolts (16) are threadedly connected to the upper and lower sides of the valve body connecting pipe (14); a rotary gear (17) is fixedly installed at the outer end of the locking bolt (16); after the insertion connecting member (8) moves forward to a certain position, the rotary rack (9) will be engaged with the rotary gear (17); Rectangular clamping inserts (18) are slidably installed on the left and right sides of the valve body connecting pipe (14); a U-shaped follower sliding frame (19) is fixedly installed at the outer end of the clamping insert (18); inclined follower tension grooves (20) are opened on the upper and lower sides of the follower sliding frame (19); after the insertion connecting member (8) moves forward to a certain position, the trigger tension column (13) will slide into the interior of the follower tension groove (20); one end of a lateral restoring spring (21) is embedded and installed inside the follower sliding frame (19); the other end of the lateral restoring spring (21) is embedded and installed on the outer wall of the valve body connecting pipe (14); an annular secondary pipe limiting member (22) is fixedly installed inside the valve body connecting pipe (14); after the butt secondary pipe (3) is inserted into the valve body connecting pipe (14), the butt secondary pipe (3) will be abutted and limited by the secondary pipe limiting member (22); an installation support member B (23) is fixedly installed on the circumferential outer wall of the valve body connecting pipe (14); stroke guiding grooves (24) are opened on the left and right sides of the installation support member B (23); A fixed clamping post (25) with a cylindrical structure is slidably installed inside the stroke guiding groove (24); a sliding and driving frame (26) with a U-shaped structure is fixedly installed on the outer side of the fixed clamping post (25); one end of a vertical restoring spring (27) is embedded and installed inside the sliding and driving frame (26); the other end of the vertical restoring spring (27) is embedded and installed on the outer wall of the mounting support B (23); after the plug-in connecting piece (8) moves forward to a certain position, the fixed clamping post (25) will slide into the inside of the fixed clamping groove (11) under the action of entering the lifting groove (10); after the trigger tension column (13) enters the inside of the follower tension groove (20), when the trigger tension column (13) continues to move forward, it will drive the follower sliding frame (19) and the clamping plug (18) to move relatively inward by using the inclined structure of the follower tension groove (20); after the clamping plug (18) moves inward to a certain position, the clamping plug (18) will insert into the inside of the strengthening slot (5); after the rotary rack (9) meshes with the rotary gear (17), when the rotary rack (9) continues to move forward, it will drive the locking bolt (16) to rotate under the cooperation of the rotary gear (17); after the locking bolt (16) rotates, the locking bolt (16) will rotate and lock into the inside of the thread locking groove (6).

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