CN211525555U - Double-sealing self-pressure type double-sealing stop valve - Google Patents

Abstract

The utility model provides a double containment self-pressure formula double containment stop valve relates to stop valve technical field, including lower valve body, there is last valve body at the top of lower valve body through bolt fixed mounting, both ends are provided with valve pocket and lower valve pocket respectively about the inside of lower valve body, go up valve pocket and lower valve pocket, go up the outside both ends of valve pocket and lower valve pocket and seted up the delivery port respectively, the surface both sides of lower valve body are located the equal fixed mounting in delivery port department and have stable structure, stable structure includes the installing frame, the fixed surface of lower valve body installs the installing frame, the inside veneer of installing frame has the expansion seal circle, surface one side fixed mounting of installing frame has hollow case. The utility model discloses, take place the inflation through the expansion seal circle to tightly hoop the pipeline, carry out further fixed pipeline, avoid the pipeline because not hard up and produce the phenomenon that drops, improved the life of pipeline, avoided maintaining simultaneously, reduce the cost of maintenance, improve the practicality.

Description

Double-sealing self-pressure type double-sealing stop valve

Technical Field

The utility model relates to a stop valve technical field especially relates to double containment self-pressure formula double containment stop valve.

Background

The stop valve is also called stop valve, belonging to forced sealing type valve, so when the valve is closed, it must apply pressure to valve clack to force sealing surface not to leak, when the medium is fed into the valve from below the valve clack, the resistance force which must be overcome by operation force is the friction force of valve stem and packing material and the thrust force produced by pressure of medium, the force for closing the valve is greater than the force for opening the valve, so the diameter of valve stem is greater, otherwise the failure of stem top bending can occur.

Traditional double containment stop valve when using, because the pipeline of connecting receives a large amount of water pressure for a long time and strikes for the connection of pipeline takes place not hard up, and the not hard up of pipeline just need be maintained simultaneously, has so not only increased the cost of pipeline maintenance, need change the pipeline simultaneously, still reduces the life of pipeline, and the practicality is not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a double-sealing self-pressure type double-sealing stop valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the double-seal self-pressure type double-seal stop valve comprises a lower valve body, wherein an upper valve body is fixedly mounted at the top of the lower valve body through a bolt, an upper valve cavity and a lower valve cavity are respectively arranged at the upper end and the lower end in the lower valve body, water outlets are respectively formed in the outer two ends of the upper valve cavity and the lower valve cavity, stabilizing structures are fixedly mounted at the water outlets on the two sides of the outer surface of the lower valve body and comprise mounting frames, the mounting frames are fixedly mounted on the outer surface of the lower valve body, expansion sealing rings are glued in the mounting frames, a hollow box is fixedly mounted on one side of the outer surface of the mounting frames, an expansion bag is fixedly mounted in the hollow box, one end of the outer surface of the expansion bag is communicated with a leather hose, the leather hose penetrates through the hollow box and extends to the outer portion of the hollow box to be communicated with the expansion sealing rings, and, the piston rod is located the outside one end fixed mounting of hollow case and is changeed the handle, it is equipped with the threaded rod to change the inside of handle, the threaded rod is connected with the inside screw thread of hollow case.

Preferably, the two ends of the outer surface of the top of the upper valve body are both fixedly provided with a conduit connecting seat, a conduit is fixedly arranged inside the conduit connecting seat, the two ends of the conduit far away from the conduit connecting seat are respectively communicated with the upper valve cavity and the lower valve cavity, and the outer surface of the conduit is both fixedly provided with a sealing valve.

Preferably, the inside of lower valve body is located the top fixed mounting of last valve pocket and is had the sealing plug, the sealing plug contacts department fixed mounting with the inner wall of lower valve body with O type circle, the inner wall sliding connection of sealing plug has the slide bar, the slide bar is located the outside of sealing plug and is located the inside one end fixed mounting of last valve pocket and has the fastening stopper.

Preferably, the outer surface of the sliding rod is sleeved with a return spring, and two ends of the return spring are respectively and fixedly connected with the outer surface of the sliding rod and the outer surface of the sealing plug.

Preferably, a water inlet is formed between the upper valve cavity and the lower valve cavity, and the size of the water inlet is matched with that of the fastening plug.

Preferably, the outer surface of one end of the piston rod, which is positioned outside the hollow box, is sleeved with an elastic spring, and two ends of the elastic spring are fixedly connected with the outer surfaces of the piston rod and the hollow box respectively.

Advantageous effects

The utility model discloses in, through setting up firm structure, when the valve body is connected with the pipeline for a long time, make the pipeline receive water pressure and assault for a long time and take place not hard up the condition, at this moment, rotate the threaded rod, make the threaded rod remove along the inner wall of hollow case, and drive the piston rod and slide along the inner wall of hollow case, and make piston rod extrusion inflation bag, make the inside gas of inflation bag pass through the inside that the leather hose got into expansion seal circle, make expansion seal circle take place the inflation, and hoop the pipeline tightly, carry out further fixed pipeline, avoid the pipeline to produce the phenomenon that drops because not hard up, the life of pipeline has been improved, the while has been avoided maintaining, the cost of reduction maintenance, the high practicality.

Drawings

Fig. 1 is a schematic structural view of a double-seal self-pressure type double-seal stop valve provided by the utility model;

fig. 2 is a schematic structural view of a stable structure of the double-seal self-pressure type double-seal stop valve provided by the utility model;

fig. 3 is a schematic structural diagram of a point a in fig. 2 according to the present invention.

Illustration of the drawings:

1. a lower valve body; 11. an upper valve cavity; 12. a lower valve cavity; 13. a water inlet; 14. a sealing plug; 15. an O-shaped ring; 16. a slide bar; 17. a fastening plug; 18. a return spring; 2. an upper valve body; 21. a catheter connection device; 22. a conduit; 23. a sealing valve; 3. a stable structure; 31. installing a frame; 32. expanding the sealing ring; 33. a hollow box; 34. an inflation bladder; 35. a piston rod; 36. an elastic spring; 37. turning a handle; 38. a threaded rod.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 1-3, the double-sealing self-pressing type double-sealing stop valve comprises a lower valve body 1, an upper valve body 2 is fixedly installed at the top of the lower valve body 1 through bolts, an upper valve cavity 11 and a lower valve cavity 12 are respectively arranged at the upper end and the lower end inside the lower valve body 1, water outlets are respectively formed at the two outer ends of the upper valve cavity 11 and the lower valve cavity 12, a stabilizing structure 3 is fixedly installed at the two outer surface sides of the lower valve body 1 at the water outlets, the stabilizing structure 3 comprises an installation frame 31, an installation frame 31 is fixedly installed at the outer surface of the lower valve body 1, an expansion sealing ring 32 is glued inside the installation frame 31, a hollow box 33 is fixedly installed at one side of the outer surface of the installation frame 31, an expansion bag 34 is fixedly installed inside the hollow box 33, one end of the outer surface of the expansion bag 34 is communicated with a leather hose, the leather hose penetrates through the, the piston rod 35 penetrates through the hollow box 33 in a sliding manner, the rotating handle 37 is fixedly installed at one end of the piston rod 35, which is positioned outside the hollow box 33, the threaded rod 38 is inserted into the rotating handle 37, the threaded rod 38 is in threaded connection with the inside of the hollow box 33, the elastic spring 36 is sleeved on the outer surface of one end of the piston rod 35, which is positioned outside the hollow box 33, two ends of the elastic spring 36 are respectively and fixedly connected with the outer surfaces of the piston rod 35 and the hollow box 33, the expansion sealing ring 32 expands by arranging the stabilizing structure 3, tightly hoops the pipeline and further fixes the pipeline, the phenomenon that the pipeline falls off due to looseness is avoided, the service life of the pipeline is prolonged, the maintenance is avoided, the maintenance cost is reduced, the practicability is improved, by arranging the elastic spring 36, when the threaded rod 38 is rotated to be separated from the inside the hollow box 33, the resilience of the elastic spring, so that the piston rod 35 is quickly reset.

A conduit connecting seat 21 is fixedly installed at both ends of the outer surface of the top of the upper valve body 2, a conduit 22 is fixedly installed inside the conduit connecting seat 21, one ends of the two conduits 22 far away from the conduit connecting seat 21 are respectively communicated with the upper valve cavity 11 and the lower valve cavity 12, a sealing valve 23 is fixedly installed on the outer surface of the conduit 22, a sealing plug 14 is fixedly installed inside the lower valve body 1 and positioned at the top of the upper valve cavity 11, an O-shaped ring 15 is fixedly installed at the contact part of the sealing plug 14 and the inner wall of the lower valve body 1, a sliding rod 16 is slidably connected with the inner wall of the sealing plug 14, a fastening plug 17 is fixedly installed at one end of the sliding rod 16 positioned outside the sealing plug 14 and positioned inside the upper valve cavity 11, a return spring 18 is sleeved on the outer surface of the sliding rod 16, both ends of the return spring 18 are respectively, the size of the water inlet 13 is matched with that of the fastening plug 17.

The utility model discloses a theory of operation: when the valve body is connected with the pipeline for a long time, the pipeline is impacted by water pressure for a long time to loosen, at this point, the threaded rod 38 is turned, so that the threaded rod 38 moves along the inner wall of the hollow chamber 33, and drives the piston rod 35 to slide along the inner wall of the hollow box 33, and causes the piston rod 35 to extrude the expansion bladder 34, so that the gas inside the expansion bladder 34 enters the inside of the expansion sealing ring 32 through the leather hose, so that the expansion sealing ring 32 expands, tightly hooping the pipeline to further fix the pipeline, avoiding the falling off phenomenon of the pipeline caused by loosening, prolonging the service life of the pipeline, meanwhile, the maintenance is avoided, the maintenance cost is reduced, the practicability is improved, and by arranging the elastic spring 36, when the threaded rod 38 is turned to disengage from the interior of the hollow box 33, the piston rod 35 is quickly reset by the resilient force of the resilient spring 36.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. Double containment is from pressure formula double containment stop valve, including lower valve body (1), its characterized in that: the top of the lower valve body (1) is fixedly provided with an upper valve body (2) through a bolt, the upper end and the lower end of the interior of the lower valve body (1) are respectively provided with an upper valve cavity (11) and a lower valve cavity (12), the upper valve cavity (11) and the lower valve cavity (12) are respectively provided with a water outlet at the upper end and the lower end, the two sides of the outer surface of the lower valve body (1) are respectively and fixedly provided with a stabilizing structure (3) at the water outlet, the stabilizing structure (3) comprises a mounting frame (31), the outer surface of the lower valve body (1) is fixedly provided with the mounting frame (31), the interior of the mounting frame (31) is glued with an expansion sealing ring (32), one side of the outer surface of the mounting frame (31) is fixedly provided with a hollow box (33), the interior of the hollow box (33) is fixedly provided with an expansion bag (34), and one end of the outer surface of the expansion, the leather hose runs through hollow case (33) and extends to the outside and the inflation sealing washer (32) intercommunication of hollow case (33), the inside of hollow case (33) slides and runs through piston rod (35), piston rod (35) are located the outside one end fixed mounting of hollow case (33) and have and change (37), change the inside of (37) and insert threaded rod (38), the inside threaded connection of threaded rod (38) and hollow case (33).

2. The dual sealing self-pressure dual sealing stop valve according to claim 1, wherein: go up the equal fixed mounting in top surface both ends of valve body (2) and have conduit coupling seat (21), the inside fixed mounting of conduit coupling seat (21) has pipe (22), two the one end that conduit coupling seat (21) were kept away from in pipe (22) communicates with last valve pocket (11) and lower valve pocket (12) respectively, the equal fixed mounting in surface of pipe (22) has seal valve (23).

3. The dual sealing self-pressure dual sealing stop valve according to claim 1, wherein: the top fixed mounting that the inside of lower valve body (1) was located valve chamber (11) has sealing plug (14), sealing plug (14) and the inner wall of lower valve body (1) contact mutually department fixed mounting have O type circle (15), the inner wall sliding connection of sealing plug (14) has slide bar (16), inside one end fixed mounting that slide bar (16) were located the outside of sealing plug (14) and were located valve chamber (11) has fastening plug (17).

4. The dual sealing self-pressure dual sealing stop valve according to claim 3, wherein: the outer surface of the sliding rod (16) is sleeved with a return spring (18), and two ends of the return spring (18) are respectively fixedly connected with the outer surface of the sliding rod (16) and the outer surface of the sealing plug (14).

5. The dual sealing self-pressure dual sealing stop valve according to claim 1, wherein: a water inlet (13) is formed between the upper valve cavity (11) and the lower valve cavity (12), and the size of the water inlet (13) is matched with that of the fastening plug (17).

6. The dual sealing self-pressure dual sealing stop valve according to claim 1, wherein: the outer surface of one end, located the outside of hollow case (33), of piston rod (35) is sleeved with an elastic spring (36), and the two ends of elastic spring (36) are fixedly connected with the outer surfaces of piston rod (35) and hollow case (33) respectively.

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