CN210397737U

CN210397737U - Corrugated pipe stop valve special for chlorine

Info

Publication number: CN210397737U
Application number: CN201920958693.3U
Authority: CN
Inventors: 胡汗华
Original assignee: Zhejiang Juhua Valve Co Ltd
Current assignee: Juhua Valve Co., Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-24
Anticipated expiration: 2029-06-25

Abstract

The utility model discloses a special bellows stop valve of chlorine, including the valve body, the valve body upper surface is connected with the valve gap through first hexagon nut and stud, and the vertical central line department of valve gap runs through to inlay and is equipped with the valve rod, and the valve rod bottom is connected with the valve clack through the pivot block, and the valve body is located the valve clack below and is equipped with the disk seat, and valve rod surface cover is equipped with the bellows subassembly, and the valve rod is located bellows subassembly top cover and is equipped with the gasket, and valve rod and valve gap bottom junction. Compared with the prior art, the beneficial effects of the utility model are that: firstly, through the first sealed pad and the second sealed pad that are equipped with, can be under the condition that need not utilize automatic seam welding, be connected the both ends of bellows subassembly with other parts, the dismouting of being convenient for reduces other cost extravagantly, secondly, through baffle and the cushion that is equipped with, can avoid the valve clack to rock at the stop valve application in-process to collide with badly on the disk seat, cause sealed badly.

Description

Corrugated pipe stop valve special for chlorine

Technical Field

The utility model relates to a bellows stop valve field specifically is special bellows stop valve of chlorine.

Background

The bellows stop valve is also called bellows seal stop valve, through automatic seam welding, form a metal barrier between fluid medium and atmosphere, ensure the design of zero leakage of valve rod, bellows stop valve inside adopts the bellows structure, the welding of stainless steel's bellows lower extreme is on the valve rod, in order to prevent the etching valve rod of process fluid, the other end is arranged in and is constituted the static seal between valve body and the valve gap, adopt dual sealed design if the bellows inefficacy valve rod packing also can avoid leaking, the bellows welds in the operating behavior that the valve rod remains stable, avoid because valve rod vibration is aroused in the valve plug vibration, be most suitable for on the pipeline of medium such as steam, it is flammable, easily explode, the conduction oil, high purity.

Among the prior art, the stop valve is in order to avoid leaking, and the both ends of bellows are connected with other parts through automatic seam welding usually, nevertheless under long-term use, and the bellows can damage, need all trade whole during the maintenance, cause the waste to, not being equipped with the baffle on the current valve clack, in the use, the valve clack rocks easily, can collide with badly on the disk seat, leads to the leakproofness variation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special bellows stop valve of chlorine to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the special corrugated pipe stop valve for chlorine comprises a valve body, wherein the upper surface of the valve body is connected with a valve cover through a first hexagon nut and a stud bolt, a valve rod is embedded in a vertical central line of the valve cover in a penetrating manner, the bottom of the valve rod is connected with a valve clack through a shaft pin in a clamping manner, a valve seat is arranged below the valve clack, a corrugated pipe assembly is sleeved on the surface of the valve rod, a second sealing gasket is arranged between the bottom of the corrugated pipe assembly and the valve rod, a gasket is sleeved on the valve rod above the corrugated pipe assembly, a groove is formed in the joint of the gasket and the valve rod, a first sealing gasket is embedded in the groove, a sealing ring is sleeved on the bottom of the corrugated pipe assembly, two ends of the sealing ring are fixed through bolt assemblies, a filler is arranged at the joint of the valve rod, and the valve nut is embedded in the valve cover, the top of the valve nut is connected with a hand wheel through a cap, the bottom of the valve rod is sleeved with a baffle, and an elastic pad is arranged between the baffle and the valve clack.

Furthermore, the corrugated pipe assembly extends out of the upper surface of the gasket and is in threaded connection with the gasket through the bolt assembly after being turned over.

Furthermore, the section of the first sealing gasket is of an L-shaped structure, and two sides of the first sealing gasket are respectively attached to the valve rod and the gasket.

Furthermore, the valve clack is of a conical structure, and the radius of the upper surface of the valve clack is larger than that of the valve seat.

Furthermore, the top of the valve rod is provided with an external thread, an internal thread is arranged in the valve nut, and the valve nut is in threaded connection with the valve rod.

Furthermore, a pressing plate is arranged below the positioning piece of the valve cover, and the pressing plate is connected with the valve cover through a bolt assembly.

Furthermore, a greasing joint is arranged on the valve cover.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, through the first sealed pad and the second sealed pad that are equipped with, can be under the condition that need not utilize automatic seam welding, be connected the both ends of bellows subassembly with other parts, the dismouting of being convenient for, behind the bellows subassembly loss, can only change the bellows, reduce other extravagant costs, secondly, through baffle and the cushion that is equipped with, can avoid the valve clack to rock at the stop valve application in-process to knock bad on the disk seat, cause sealed bad.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of a portion of fig. 1A of the present invention;

FIG. 3 is a schematic structural view of the joint between the bellows assembly and the valve stem of the present invention;

fig. 4 is a schematic structural diagram of a portion of fig. 1B of the present invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a valve flap; 4. a shaft pin; 5. a bellows assembly; 6. A valve stem; 7. a gasket; 8. a valve cover; 9. a first hexagonal nut; 10. a stud bolt; 11. a filler; 12. pressing a plate; 13. positioning plates; 14. a valve nut; 15. a hand wheel; 16. and capping; 17. a first gasket; 18. a groove; 19. a bolt assembly; 20. a seal ring; 21. a second gasket; 22. a baffle plate; 23. an elastic pad.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: the special corrugated pipe stop valve for chlorine comprises a valve body 1, wherein the upper surface of the valve body 1 is connected with a valve cover 8 through a first hexagon nut 9 and a stud bolt 10, a valve rod 6 is embedded at the vertical central line of the valve cover 8 in a penetrating manner, the bottom of the valve rod 6 is connected with a valve clack 3 in a clamping manner through a shaft pin 4, a valve seat 2 is arranged below the valve clack 3 of the valve body 1, a corrugated pipe assembly 5 is sleeved on the surface of the valve rod 6, a second sealing gasket 21 is arranged between the bottom of the corrugated pipe assembly 5 and the valve rod 6, so that the corrugated pipe assembly 5 and the valve rod 6 form a whole body, the chlorine is prevented from leaking from the joint of the corrugated pipe assembly 5 and the valve rod 6, a gasket 7 is sleeved on the upper part of the corrugated pipe assembly 5, a groove 18 is formed at the, valve rod 6 is equipped with filler 11 with valve gap 8 bottom junction, can be when the bellows became invalid, prevent chlorine leakage, the seal structure of bellows stop valve has been increased, make the leakproofness of bellows stop valve better, 6 top covers of valve rod are equipped with spacer 13, and spacer 13 edge is connected with valve gap 8 block, 6 top covers of valve rod are equipped with female 14 of valve, and female 14 of valve inlays and establishes in valve gap 8, female 14 tops of valve are connected with hand wheel 15 through and cap 16 block, hand wheel 15 is according to ergonomic design, can make easy operation convenient, and long service life, safe and reliable 6 bottom covers of valve rod are equipped with baffle 22, be equipped with cushion 23 between baffle 22 and the valve clack 3.

Further, the bellows assembly 5 extends out of the upper surface of the gasket 7 and is turned over to be in threaded connection with the gasket 7 through the bolt assembly 19.

Furthermore, the section of the first sealing gasket 17 is of an L-shaped structure, and two sides of the first sealing gasket are respectively attached to the valve rod 6 and the gasket 7, so that the corrugated pipe assembly 5 and the gasket 7 form a whole, and chlorine gas is prevented from leaking from the position between the corrugated pipe assembly 5 and the gasket 7.

Furthermore, the valve clack 3 is in a conical structure, and the radius of the upper surface of the valve clack 3 is larger than that of the valve seat 2, so that a sealing surface of the stop valve and a medium form a streamline type, the sealing performance is better, and the service life is longer.

Further, the top of the valve rod 6 is provided with external threads, the interior of the valve nut 14 is provided with internal threads, and the valve nut 14 is in threaded connection with the valve rod 6.

Further, a pressing plate 12 is arranged below the positioning plate 13 of the valve cover 8, and the pressing plate 12 is connected with the valve cover 8 through a bolt assembly 19.

Furthermore, the valve cover 8 is provided with a greasing joint, so that the valve rod 6 and other components can be directly lubricated, the loss caused by friction in long-term use is reduced, and the service life of the valve is prolonged.

The working principle is as follows: when the stop valve is used, firstly, two ends of a valve body 1 of the stop valve are connected to corresponding pipelines through bolts and nuts, secondly, when the stop valve is used, a hand wheel 15 is rotated, a valve rod 6 drives a valve seat 2 and a valve clack 3 to rise, so that two ends of the stop valve are communicated, chlorine can be transmitted to the other end from the pipeline at one end of the stop valve, in the transmission process, the stop valve is filled with the chlorine, because the top and the bottom of a corrugated pipe assembly 5 are respectively connected with a gasket 7 and the valve rod 6 through a first gasket 17 and a second gasket 21, the corrugated pipe assembly 5 forms a metal barrier, the interior of the valve body 1 can be separated from the outside atmosphere, the chlorine is prevented from being leaked through the corrugated pipe assembly 5, in addition, because of the effects of a baffle plate 22 and an elastic cushion 23, the damage caused by the rotation of the valve clack 3 can be avoided, when the corrugated, avoid chlorine to leak once more, and during subsequent maintenance, can tear valve rod 6 earlier, bellows subassembly 5 and gasket 7 out, unpack apart the bolt assembly 19 on sealing ring 20 and the gasket 7, change bellows subassembly 5 can, finally, after the use is accomplished, rotate hand wheel 15, make valve rod 6 drive valve clack 3 and disk seat 2 move down, thereby separate the pipeline of valve body 1 both sides, because valve clack 3 adopts the toper design, can form streamlined between sealed face and medium, increase the leakproofness of stop valve, prevent that chlorine from leaking the other end from the one end of valve body 1.

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

Claims

1. Special bellows stop valve of chlorine, including valve body (1), its characterized in that: the valve body (1) upper surface is connected with valve gap (8) through first hexagon nut (9) and stud (10), valve gap (8) vertical central line department runs through and inlays and be equipped with valve rod (6), valve rod (6) bottom is connected with valve clack (3) through pivot (4) block, valve body (1) is located valve clack (3) below and is equipped with disk seat (2), valve rod (6) surface cover is equipped with bellows subassembly (5), be equipped with the sealed pad of second (21) between bellows subassembly (5) bottom and valve rod (6), valve rod (6) are located bellows subassembly (5) top cover and are equipped with gasket (7), and gasket (7) and valve rod (6) junction set up fluted (18), the embedded first sealed pad (17) that is equipped with of recess (18), bellows subassembly (5) bottom cover is equipped with sealing ring (20), and sealing ring (20) both ends are fixed through bolt assembly (19), valve rod (6) are equipped with filler (11) with valve gap (8) bottom junction, valve rod (6) top cover is equipped with spacer (13), and spacer (13) edge is connected with valve gap (8) block, valve rod (6) top cover is equipped with female (14) of valve, and female (14) of valve inlays and establish in valve gap (8), female (14) top of valve is connected with hand wheel (15) through and cap (16) block, valve rod (6) bottom cover is equipped with baffle (22), be equipped with between baffle (22) and valve clack (3) cushion (23).

2. The special corrugated pipe stop valve for chlorine according to claim 1, characterized in that: the corrugated pipe assembly (5) extends out of the upper surface of the gasket (7) and is in threaded connection with the gasket (7) through the bolt assembly (19) after being turned over.

3. The special corrugated pipe stop valve for chlorine according to claim 1, characterized in that: the section of the first sealing gasket (17) is of an L-shaped structure, and two sides of the first sealing gasket are respectively attached to the valve rod (6) and the gasket (7).

4. The special corrugated pipe stop valve for chlorine according to claim 1, characterized in that: the valve clack (3) is of a conical structure, and the radius of the upper surface of the valve clack (3) is larger than that of the valve seat (2).

5. The special corrugated pipe stop valve for chlorine according to claim 1, characterized in that: the top of the valve rod (6) is provided with an external thread, an internal thread is arranged in the valve nut (14), and the valve nut (14) is in threaded connection with the valve rod (6).

6. The special corrugated pipe stop valve for chlorine according to claim 1, characterized in that: the valve cover (8) is arranged below the positioning sheet (13), the pressing plate (12) is arranged below the positioning sheet (13), and the pressing plate (12) is connected with the valve cover (8) through the bolt assembly (19).

7. The special corrugated pipe stop valve for chlorine according to claim 1, characterized in that: and a greasing joint is arranged on the valve cover (8).