CN212775890U

CN212775890U - Double-packing sealing ring group of low-temperature regulating valve

Info

Publication number: CN212775890U
Application number: CN202021627532.5U
Authority: CN
Inventors: 曾伟
Original assignee: Jianyang Zhongyuan Low Temperature Equipment Kit Co ltd
Current assignee: Jianyang Zhongyuan Low Temperature Equipment Kit Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-03-23
Anticipated expiration: 2030-08-07

Abstract

The utility model discloses a two packing sealing washer groups of low temperature governing valve, including the valve body, seted up the valve pocket in the valve body, seted up on the valve pocket and put the groove, placed the isolation layer in the put groove, the isolation layer upper berth is equipped with the sealing layer, has placed on the sealing layer and has pressed the briquetting, has seted up the seal groove on pressing the briquetting, and seal groove facial make-up is equipped with the lug, has placed the sealing washer in the seal groove, has placed the cover piece on the briquetting of telling, has seted up the screw hole on the valve body, has seted up the perforation on the cover piece, and. Can prevent through the water barrier that the sealing layer from flowing from the bottom, alternate the bolt in perforation and threaded hole, because bolt and screw hole screw-thread fit, can fix the cover block on the valve body, make according to the briquetting can be with the sealing layer compaction, again through lug and sealing washer mutual contact, make the sealing washer take place deformation in the seal groove, seal the gap, can avoid the valve body to leak, improve the leakproofness of valve body.

Description

Double-packing sealing ring group of low-temperature regulating valve

Technical Field

The utility model belongs to the technical field of the governing valve is sealed, concretely relates to two packing sealing washer groups of low temperature regulating valve.

Background

The low-temperature regulating valve has the advantages of compact overall structure, light weight, good stability and the like, the valve body adopts a precision casting angular structure, the material is aluminum alloy, the valve body has good low-temperature resistance, and the bellows seal ensures that the regulating valve does not leak in low-temperature occasions, so the low-temperature regulating valve is widely used in low-temperature and deep-cooling occasions such as metallurgy, air separation, oxygen generation, petroleum, chemical engineering and the like, and is particularly used for accurately controlling the process parameters of low-temperature gas and fluid (such as liquid oxygen, liquid argon and the like) to be kept at fixed values.

The existing low-temperature regulating valve sealing ring set is arranged on a valve rod sleeved with a cover block, the cover block is fixedly connected to a valve body, so that a sealing effect is achieved, and the existing defects are as follows: because there is the gap between low temperature regulating valve rod and the sealing washer group, rivers cut to can lead to the crack to spill, cause the leakage problem, lead to the wasting of resources.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two packing sealing washer groups of low temperature regulating valve to solve the current two not good problem of packing sealing washer group sealing effect of low temperature regulating valve.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two packing sealing washer groups of low temperature regulating valve, includes the valve body, the valve pocket has been seted up in the valve body, the groove has been seted up on the valve pocket, place the inslot and placed the isolation layer, the isolation layer upper berth is equipped with the sealing layer, placed on the sealing layer and pressed the briquetting, place according to the briquetting and place the inslot, set up the seal groove according to pressing on the briquetting, the seal groove facial make-up is equipped with the lug, place the sealing washer in the seal groove, the capping piece has been placed according to what telling on the briquetting, set up threaded hole on the valve body, set up the perforation on the capping piece, it has the bolt to alternate in perforation and the.

Preferably, a through hole is formed in the cover block, a valve rod is inserted into the through hole, penetrates through the pressing block and penetrates through the placing groove.

Preferably, a clamping block is installed at the upper end of the valve rod, a rotary disc is placed on the clamping block, an insertion hole is formed in the rotary disc, and the clamping block is inserted in the insertion hole in a penetrating mode.

Preferably, the fixture block is provided with a screw, and a nut is in threaded fit with the screw.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a two packing sealing washer groups of low temperature regulating valve, compare with prior art, can prevent through the water barrier of putting the tank bottom that the sealing layer from flowing from the bottom, alternate the bolt in the perforation of cover block and the screwed hole of valve body, through bolt and screw hole screw-thread fit, can fix the cover block on the valve body, the cover block pushes down the press briquetting, make and press the press briquetting can be with the sealing layer compaction, lug and sealing washer in through the seal groove contact each other again, exert decurrent effort through the cover block, make the sealing washer take place deformation in the seal groove, seal the gap, can avoid the valve body to leak, improve the leakproofness of valve body.

The utility model provides a two packing sealing washer groups of low temperature regulating valve, in the jack of carousel was alternate through the fixture block on the valve rod, fixture block and jack were tightly laminated, can let the carousel drive the valve rod and carry out synchronous rotation to can open or close the governing valve, put on the screw rod through covering the nut again, swivel nut makes the lower terminal surface and the carousel of nut contact, can make the carousel fastening on the valve rod, convenient to use.

Drawings

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

FIG. 2 is a schematic view of the partial structure of the present invention;

FIG. 3 is an enlarged view of a portion a of FIG. 2;

FIG. 4 is an enlarged view of FIG. 2 at b;

fig. 5 is an enlarged schematic view of fig. 2 at c.

In the figure: the valve comprises a valve body 1, a valve cavity 2, a placing groove 3, an isolating layer 4, a sealing layer 5, a pressing block 6, a sealing groove 7, a convex block 8, a sealing ring 9, a cover block 10, a threaded hole 11, a through hole 12, a bolt 13, a through hole 14, a valve rod 15, a fixture block 16, a rotary disk 17, an insertion hole 18, a screw rod 19 and a nut 20.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, 2, 3 and 4, a low temperature regulating valve dual-packing seal ring set comprises a valve body 1, a low temperature regulating valve, a valve cavity 2 is arranged inside the valve body 1, a placing groove 3 is arranged at the upper end of the valve body 1, the placing groove 3 is a conical groove and is located at the middle position, the bottom of the placing groove 3 is communicated with the valve cavity 2, an isolation layer 4 is arranged at the bottom of the placing groove 3, the isolation layer 4 is made of PTFE particles, a seal layer 5 is laid on the isolation layer 4, the seal layer 5 is made of nano-graphite particles, the isolation layer 4 can ensure that the seal layer 5 cannot enter the valve cavity 2 along with a liquid medium, a pressing block 6 is arranged on the seal layer 5, the pressing block 6 is of a circular ring structure, the pressing block 6 is sleeved on a valve rod 15, the inner wall of the pressing block 6 is tightly attached to the outer wall of the valve rod 15, a seal groove 7 is arranged on, the convex block 8 is of a circular ring structure and is welded and connected to the wall surface of the sealing groove 7, a sealing ring 9 is placed in the sealing groove 7, the sealing ring 9 is a rubber ring, the sealing ring 9 is in contact with the convex block 8, a cover block 10 which is a circular block is placed at the top of the upper end of the valve body 1 and is located at the middle position, a through hole 14 which is a circular hole is formed in the cover plate 10 and is located at the middle position, a thread is arranged in the through hole 14, a valve rod 15 which is a cylindrical rod is inserted in the pupil 14 in a penetrating manner, the valve rod 15 penetrates through the placing groove 3 and extends in the valve cavity 2, a thread is arranged on the valve rod 15 and is located at the middle position, the valve rod 15 is in threaded fit with the through hole 14, the valve rod 15 can move up or down in the through hole 14 by rotating, a threaded hole 11 is formed in the top of the upper end of the valve, the bolt 13 is inserted into the through hole 12 and the threaded hole 11, the through hole 12 and the bolt 13 are in clearance fit, the threaded hole 12 and the bolt 13 are in threaded fit, the bolt 13 is inserted into the through hole 12 of the cover block 10 and the threaded hole 11 of the valve body 1, the cover block 10 can be fixed on the valve body 1 through the bolt 13 and the threaded hole 11 in threaded fit, the cover block 10 presses the pressing block 6 downwards, the pressing block 6 can compact the sealing layer 5 on the isolating layer 4, the convex block 8 in the sealing groove 7 is in mutual contact with the sealing ring 9, the sealing ring 9 deforms in the sealing groove 7 under the downward acting force applied by the cover block 10, the gap between the valve rod 15 and the pressing block 6 is sealed, the liquid medium can be prevented from leaking from the valve body 1, and the sealing performance of the valve body 1 is improved.

Referring to fig. 1, 2 and 5, a clamping block 16 is welded and connected to the top of the upper end of the valve rod 15, the clamping block is a square block, the clamping block 16 is located at a middle position, a rotary disc 17 is placed on the clamping block 16, the rotary disc 17 is of an annular structure, an insertion hole 18 is formed in the rotary disc 17, the insertion hole 18 is a square hole and located at a middle position, the clamping block 16 is inserted into the insertion hole 18, the clamping block 16 is tightly attached to the insertion hole 18, a screw 19 is welded and connected to the top of the upper end of the clamping block 16, the middle position is located, a nut 20 is sleeved on the screw 19, the nut 20 is in threaded fit with the screw 19, the clamping block 16 on the valve rod 15 is inserted into the insertion hole 18 of the rotary disc 17, the lower end face of the nut 20 is in threaded fit with the screw 19, the nut 20 is screwed down, the lower end face of the nut 20 is in, the turntable 17 can be removed to avoid the regulating valve from being operated by mistake.

During implementation, the clamping block 16 on the valve rod 15 is inserted into the insertion hole 18 of the rotary disc 17, the nut 20 is in threaded fit with the screw rod 19, the nut 20 is screwed downwards, the lower end face of the nut 20 is in contact with the rotary disc 17, the rotary disc 17 can be fastened at the top of the valve rod 15, the rotary disc 17 is screwed upwards to enable the valve rod 15 to move upwards in the through hole 14, so that the regulating valve can be opened, the regulating valve can operate, the bolt 13 is inserted into the through hole 12 of the cover block 10 and the threaded hole 11 of the valve body 1, the bolt 13 is in threaded fit with the threaded hole 11, the cover block 10 can be fixed on the valve body 1, the cover block 10 presses the pressing block 6 downwards, the pressing block 6 can compact the sealing layer 5 on the isolation layer 4, the convex block 8 in the sealing groove 7 is in contact with the sealing ring 9, the convex block presses the sealing ring 9 under the action of the cover block 10 downwards, can seal 15 valve rods and press the gap between the briquetting 6, can avoid liquid medium to leak from valve body 1, improve valve body 1's leakproofness to solve the current not good problem of two packing sealing washer groups of low temperature regulating valve.

Claims

1. The utility model provides a two packing sealing washer groups of low temperature regulating valve, includes valve body (1), its characterized in that: a valve cavity (2) is arranged in the valve body (1), a placing groove (3) is arranged on the valve cavity (2), an isolation layer (4) is placed in the placing groove (3), a sealing layer (5) is laid on the isolation layer (4), a pressing block (6) is arranged on the sealing layer (5), the pressing block (6) is arranged in the placing groove (3), a sealing groove (7) is arranged on the pressing block (6), a convex block (8) is arranged on the sealing groove (7), a sealing ring (9) is arranged in the sealing groove (7), a cover block (10) is arranged on the pressing block (6), a threaded hole (11) is arranged on the valve body (1), a through hole (12) is arranged on the cover block (10), bolts (13) are inserted into the through holes (12) and the threaded holes (11), and the threaded holes (11) are in threaded connection with the bolts (13).

2. The dual packing seal ring set for a cryogenic regulating valve of claim 1, wherein: the cover block (10) is provided with a through hole (14), a valve rod (15) is inserted into the through hole (14), and the valve rod (15) penetrates through the pressing block (6) and penetrates through the placing groove (3).

3. The dual packing seal ring set for a cryogenic regulating valve of claim 2, wherein: the upper end of the valve rod (15) is provided with a clamping block (16), the clamping block (16) is provided with a rotary table (17), the rotary table (17) is provided with an insertion hole (18), and the clamping block (16) is inserted into the insertion hole (18).

4. The dual packing seal ring set for a cryogenic regulating valve of claim 3, wherein: the fixture block (16) is provided with a screw rod (19), and a nut (20) is in threaded fit with the screw rod (19).