CN217301685U

CN217301685U - High-temperature-resistant ball valve

Info

Publication number: CN217301685U
Application number: CN202220270577.4U
Authority: CN
Inventors: 黄小强
Original assignee: Zhejiang Jingshui Valve Technology Co ltd
Current assignee: Zhejiang Jingshui Valve Technology Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-08-26
Anticipated expiration: 2032-02-10

Abstract

The utility model belongs to the technical field of ball valves, in particular to a high-temperature resistant ball valve, which comprises a valve body and a ball body, wherein a rotating part is formed in the middle of the valve body, a circular arc-shaped cold water cover is arranged on the periphery of the rotating part, a water cooling cavity is formed between the cold water cover and the rotating part, a first pipeline for water inlet is arranged on the outer surface of the cold water cover, and a second pipeline for water outlet is arranged at the other end of the cold water cover; install the valve rod in the rotation portion, the lower extreme and the spheroid of valve rod are connected, and the upper end of valve rod stretches out the valve body and installs the handle, the periphery of valve rod shaping respectively has first recess and second recess, is provided with the sealing washer in first recess and the second recess respectively, can let in cold water in the cold water cover from first pipeline to reach the effect that reduces valve rod department temperature, reduce the temperature of sealing washer mounted position department, prevent effectively that the sealing washer is premature ageing because of being in high temperature environment for a long time, prolong its life, improve sealed reliability, guarantee sealed effect.

Description

High-temperature-resistant ball valve

Technical Field

The utility model relates to a ball valve technical field refers in particular to a high temperature resistant ball valve.

Background

Ball valves, defined in standard GB/T21465-2008 "valve nomenclature" as: the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on a pipeline, and can close any channel to connect the other two channels.

At present, a sealing ring needs to be installed between a valve rod and a shaft sleeve in the assembling process of the valve rod and the shaft sleeve, but the sealing ring in a conventional structure is easy to wear and damage when being used for a long time, the service life of the sealing ring is influenced, the sealing reliability is insufficient, and therefore the structure needs to be further improved.

Disclosure of Invention

The utility model aims at providing a high temperature resistant ball valve through novel sealing washer structure, solves the problem that sealing washer life is short.

The purpose of the utility model is realized like this: a high-temperature-resistant ball valve comprises a valve body and a ball body which is rotatably arranged in the valve body, wherein a rotating part is formed in the middle of the valve body, a circular arc-shaped cold water cover is arranged on the periphery of the rotating part, a water cooling cavity is formed between the cold water cover and the rotating part, a first pipeline for water inlet is arranged on the outer surface of the cold water cover, and a second pipeline for water outlet is arranged at the other end of the cold water cover; install the valve rod in the rotating part, the lower extreme and the spheroid of valve rod are connected, the valve body is stretched out and the handle is installed to the upper end of valve rod, the periphery of valve rod shaping respectively has first recess and second recess, be provided with the sealing washer in first recess and the second recess respectively, the outer wall of sealing washer is outside convex arcwall face, the inner wall of sealing washer is the arcwall face to the indent, the border of sealing washer inner circle has first annular bulge and second annular bulge to the extension of axial both ends, the border of sealing washer outer lane has third annular bulge and fourth annular bulge to the extension of axial both ends, the shaping has last annular groove between first annular bulge and the third annular bulge, the shaping has lower annular groove between second annular bulge and the fourth annular bulge, be provided with the buffer block on the bellied terminal surface of third annular, be provided with buffer block down on the bellied terminal surface of fourth annular.

Preferably, the width of the first groove is smaller than that of the second groove, and the groove depth of the first groove is smaller than that of the second groove.

Preferably, the ratio of the groove depth of the first groove to the groove depth of the second groove is 0.4-0.7.

Preferably, a plurality of blind holes are uniformly formed in the periphery of the rotating portion, the blind holes are formed in the cold water cover, and one end of each blind hole is communicated with the water cooling cavity.

Preferably, a first quick coupling is mounted at an end of the first pipe, and a second quick coupling is mounted at an end of the second pipe.

Preferably, a sealing seat is formed in the valve body, the sealing seats are respectively located on the end faces of the two sides of the ball body, a sealing piece is arranged on the end face of each sealing seat, and the sealing pieces are made of polyether-ether-ketone materials.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses a design of cold water cover, in the in-service use process, can let in cold water in the cold water cover from first pipeline, thereby carry out the heat exchange to the valve rod heat between the rotation portion, the water after the absorption heat will be discharged through the second pipeline, and circulate, thereby reach the effect that reduces valve rod department temperature, reduce the temperature of sealing washer mounted position department, utilize cold water to reduce the temperature around the sealing washer, prevent effectively that the sealing washer is too early ageing because of being in high temperature environment for a long time, prolong its life, improve sealed reliability, guarantee sealed effect.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is a schematic perspective view of the sealing ring.

Fig. 4 is a schematic cross-sectional structure of the seal ring.

Fig. 5 is a schematic structural view of the rotating part and the cold water cover.

Reference numerals: 1-a valve body; 2-a sphere; 3-a rotating part; 4-cold water cover; 5-water cooling the cavity;

6-a first conduit; 7-a second conduit; 8-valve stem; 9-a handle; 10-a first groove; 11-a second groove; 12-a sealing ring; 13-a first annular projection; 14-a second annular protuberance; 15-a third annular projection;

16-a fourth annular projection; 17-an upper annular groove; 18-lower annular groove; 19-upper buffer block; 20-lower buffer block; 21-blind hole; 22-a first quick coupling; 23-a second quick coupling; 24-a sealing seat; 25-sealing member.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a high temperature resistant ball valve comprises a valve body 1 and a ball body 2 rotatably arranged in the valve body 1, wherein a rotating part 3 is formed in the middle of the valve body 1, a circular arc-shaped cold water cover 4 is arranged on the periphery of the rotating part 3, a water cooling cavity 5 is formed between the cold water cover 4 and the rotating part 3, a first pipeline 6 for water inlet is arranged on the outer surface of the cold water cover 4, a second pipeline 7 for water outlet is arranged at the other end of the cold water cover 4, in the actual use process, cold water can be introduced into the cold water cover 4 from the first pipeline 6, so that heat exchange is carried out on heat between the valve rod 8 and the rotating part 3, the water after absorbing the heat can be discharged through the second pipeline 7 and circulated, so that the effect of reducing the temperature at the valve rod is achieved, the temperature at the installation position of a seal ring is reduced, the temperature around the seal ring is reduced by using the cold water, and premature aging of the seal ring due to long-term high temperature environment is effectively prevented, the service life of the sealing device is prolonged, the sealing reliability is improved, and the sealing effect is ensured;

referring to fig. 2 and 4, a valve rod 8 is installed in the rotating portion 3, the lower end of the valve rod 8 is connected with the ball 2, the upper end of the valve rod 8 extends out of the valve body 1 and is provided with a handle 9, the ball 1 is rotated by operating the handle 9 to control the on-off of the valve body 1, a first groove 10 and a second groove 11 are respectively formed at the periphery of the valve rod 8, a sealing ring 12 is respectively arranged in the first groove 10 and the second groove 11, the outer wall of the sealing ring 12 is an arc-shaped surface protruding outwards and is in line contact with the outer wall of the valve body, the sealing effect is improved without increasing friction force, the inner wall of the sealing ring 12 is an arc-shaped surface recessed inwards, so that the sealing ring has elasticity, the resilience of the sealing ring when stressed is ensured, the sealing effect is ensured, a first annular bulge 13 and a second annular bulge 14 extend towards the two axial ends at the edge of the inner ring of the sealing ring 12, the edge of the outer ring of the sealing ring 12 extends to two axial ends to form a third annular bulge 15 and a fourth annular bulge 16, an upper annular groove 17 is formed between the first annular bulge 13 and the third annular bulge 15, a lower annular groove 18 is formed between the second annular bulge 14 and the fourth annular bulge 16, the flexibility of the sealing ring is effectively increased, the sealing ring has resilience when stressed, the sealing performance of the sealing ring with the structure is stronger, an upper buffer block 19 is arranged on the end surface of the third annular bulge 15, a lower buffer block 20 is arranged on the end surface of the fourth annular bulge 16, the upper buffer block and the lower buffer block have buffer margins, the sealing ring can better bear the condition that the valve body deforms due to the friction force of the sealing ring in the movement direction in the movement process, the service life of the sealing ring is ensured, the high-temperature ball valve is reliable in structure, simple in structure and convenient to maintain, the valve body and the ball body are always in a closed state, are not easy to erode by media, and are easy to operate and maintain.

The utility model discloses a three-layer sealing washer realizes sealed to the high temperature ball valve, has guaranteed dustproof effect, and uses the back for a long time, can not damage easily, need not frequent maintenance, and structural layout is reasonable, and further effectual sealing performance between valve body and the disk seat has been guaranteed again, has realized high temperature ball valve ability normal operating, great improvement life.

Referring to fig. 4 in particular, the width of the first groove 10 is smaller than the width of the second groove 11, and the depth of the first groove 10 is smaller than the depth of the second groove 11.

Referring to fig. 4 in particular, the ratio of the groove depth of the first groove 10 to the groove depth of the second groove 11 is 0.4-0.7.

Specifically, referring to fig. 5, a plurality of blind holes 21 are uniformly formed in the periphery of the rotating portion 3, the blind holes 21 are arranged in the cold water cover 4, one end of each blind hole 21 is communicated with the water cooling cavity 5, the contact area between cold water and the rotating portion 3 is increased, and the water cooling efficiency is improved.

Referring to fig. 5 in particular, a first quick coupling 22 is installed at the end of the first pipeline 6, and a second quick coupling 23 is installed at the end of the second pipeline 7, so that the connection is convenient.

The sealing seat 24 is formed in the valve body 1, the sealing seat 24 is respectively positioned on the end faces of two sides of the ball body 2, the sealing piece 25 is arranged on the end face of the sealing seat 24, the sealing piece 25 is made of polyether-ether-ketone materials, the product cost is low, the high-temperature resistance is excellent, the sealing ring can be used in a medium at 350 ℃ for a long time, and the sealing ring is prevented from being deformed due to high temperature to cause poor sealing performance.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The high-temperature-resistant ball valve is characterized by comprising a valve body (1) and a ball body (2) which is rotatably arranged in the valve body (1), wherein a rotating part (3) is formed in the middle of the valve body (1), a circular arc-shaped cold water cover (4) is arranged on the periphery of the rotating part (3), a water-cooling cavity (5) is formed between the cold water cover (4) and the rotating part (3), a first pipeline (6) for water inlet is installed on the outer surface of the cold water cover (4), and a second pipeline (7) for water outlet is installed at the other end of the cold water cover (4);

install valve rod (8) in rotation portion (3), the lower extreme and spheroid (2) of valve rod (8) are connected, the upper end of valve rod (8) stretches out valve body (1) and installs handle (9), the periphery of valve rod (8) is formed with first recess (10) and second recess (11) respectively, be provided with sealing washer (12) in first recess (10) and the second recess (11) respectively, the outer wall of sealing washer (12) is outside convex arcwall face, the inner wall of sealing washer (12) is the arcwall face of indent, the border of sealing washer (12) inner circle has first annular bulge (13) and second annular bulge (14) to axial both ends extension, the border of sealing washer (12) outer lane has third annular bulge (15) and fourth annular bulge (16) to axial both ends extension, the shaping has annular groove (17) between first annular bulge (13) and third annular bulge (15), a lower annular groove (18) is formed between the second annular bulge (14) and the fourth annular bulge (16), an upper buffer block (19) is arranged on the end face of the third annular bulge (15), and a lower buffer block (20) is arranged on the end face of the fourth annular bulge (16).

2. The high temperature resistant ball valve of claim 1, wherein: the width of the first groove (10) is smaller than that of the second groove (11), and the depth of the first groove (10) is smaller than that of the second groove (11).

3. The high temperature resistant ball valve of claim 2, wherein: the ratio of the groove depth of the first groove (10) to the groove depth of the second groove (11) is 0.4-0.7.

4. The high temperature resistant ball valve of claim 1, wherein: a plurality of blind holes (21) are uniformly formed in the periphery of the rotating portion (3), the blind holes (21) are formed in the cold water cover (4), and one end of each blind hole (21) is communicated with the water cooling cavity (5).

5. The high temperature resistant ball valve of claim 1, wherein: a first quick coupling (22) is mounted at the end of the first pipeline (6), and a second quick coupling (23) is mounted at the end of the second pipeline (7).

6. The high temperature resistant ball valve of claim 1, wherein: a sealing seat (24) is formed in the valve body (1), the sealing seat (24) is respectively located on the end faces of the two sides of the ball body (2), a sealing piece (25) is arranged on the end face of the sealing seat (24), and the sealing piece (25) is made of polyether-ether-ketone materials.