CN217108299U

CN217108299U - Low temperature resistant ball valve

Info

Publication number: CN217108299U
Application number: CN202220939584.9U
Authority: CN
Inventors: 贾再志; 李含
Original assignee: Wenzhou Guoying Valve Co ltd
Current assignee: Wenzhou Guoying Valve Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-08-02
Anticipated expiration: 2032-04-22

Abstract

The utility model relates to a ball valve technical field especially relates to a low temperature resistant ball valve, and it includes valve body, slider, disk seat and control tube. The two ends of the valve body are respectively provided with a connecting piece A and a connecting piece B. The connecting piece A is rotatably provided with a knob, and the knob is driven to be connected with the sliding block inside the sliding block connecting piece A. The valve seats are symmetrically and slidably arranged in the valve body, the two springs are symmetrically arranged in the valve body, the springs are connected with the valve seats on the corresponding sides, and the ball body is arranged between the valve seats on the two sides. The adjusting pipe is vertically arranged on the valve body, and the inside of the adjusting pipe is communicated with the internal channel of the valve body. The adjusting pipe is rotatably provided with a valve rod, and the valve rod is driven to be connected with the ball body. The top thread of control tube sets up the tube cap, rotates on the tube cap and sets up handle cap and handle, and the bottom of handle cap sets up screw rod B, and screw rod B rotates with the tube cap to be connected, and the valve rod is connected in the drive of screw rod B. The screw B is provided with a locking plate in a threaded manner, and the locking plate is rotationally connected with the pipe cover. The utility model discloses have good low temperature resistance to it is convenient to maintain and change.

Description

Low temperature resistant ball valve

Technical Field

The utility model relates to a ball valve technical field especially relates to a low temperature resistant ball valve.

Background

The ball valve is developed from a cock, and the opening and closing element of the ball valve is used as a ball body, and the opening and closing purposes are realized by rotating the ball body by 90 degrees around the axis of a valve rod. The ball valve is mainly used for cutting off, distributing and changing the flowing direction of a medium on a pipeline, and the ball valve designed into a V-shaped opening also has a good flow regulating function. The ball valve has the advantages of simple structure, good sealing performance, small volume in a certain nominal passing range, light weight, low material consumption, small installation size, small driving moment, simple and convenient operation and easy realization of quick opening and closing, and is one of the fastest valve varieties developed in the last ten years.

Chinese patent with the publication number of grant CN201921866499.9 discloses a low temperature resistant fire prevention ball valve, and this utility model can be in normal use under the low temperature condition, takes place the frostbite condition when avoiding the staff operation, and fire behavior is good simultaneously. But this ball valve is very low if the liquid temperature of inside circulation in actual work, and low temperature can lead to spheroidal volume to reduce in the ball valve, still can have the phenomenon of liquid seepage, and this utility model is damaging the back simultaneously, if need change, need cut off pipeline valve door, if pipeline valve door distance is very far away, the operation is wasted time and energy to this ball valve need change whole ball valve when the handle damages, and is not only long consuming, still makes cost of maintenance increase.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is to the problem that exists among the background art, provides a low temperature resistant ball valve.

The technical scheme of the utility model: a low temperature resistant ball valve comprises a valve body, a sliding block, a valve seat and an adjusting pipe. One end of the valve body is provided with a connecting piece A communicated with the inside of the valve body, and the other end of the valve body is provided with a connecting piece B communicated with the inside of the valve body. The connecting piece A is rotatably provided with a knob, and the bottom of the knob is provided with a screw rod A. The slider slides along the inside passageway vertical direction of connecting piece A and sets up inside connecting piece A, slider and screw rod A threaded connection. The valve seats are symmetrically and slidably arranged in the valve body, the two springs are symmetrically arranged in the valve body, one ends, close to each other, of the springs are connected with the corresponding side valve seats respectively, the ball body is arranged between the valve seats on the two sides, and the ball body is provided with through holes communicated with the connecting piece A and the connecting piece B. The adjusting pipe is vertically arranged on the valve body, and the inside of the adjusting pipe is communicated with the internal channel of the valve body. The adjusting pipe is internally and rotatably provided with a valve rod which is driven to be connected with the ball body. The top thread of control tube sets up the tube cap, rotates on the tube cap and sets up the handle cap, and the side of handle cap sets up the handle, and the bottom of handle cap sets up screw rod B, and screw rod B rotates with the tube cap to be connected, and screw rod B drive connection valve rod. The screw B is provided with a locking plate in a threaded manner, and the locking plate is rotationally connected with the pipe cover.

Preferably, two telescopic pipes are symmetrically arranged in the valve body, a sliding groove is formed in the valve body and is communicated with an internal channel of the valve body, the telescopic pipes are located in the sliding groove, the fixed end of each telescopic pipe is connected with one side, away from the valve seat, of the corresponding sliding groove, the movable end of each telescopic pipe is connected with the valve seat, and the spring is located between the inner wall of the valve body and the outer wall of each telescopic pipe.

Preferably, a vertical groove is formed in the connecting piece A, the vertical groove is communicated with the inner channel of the connecting piece A, the size of the vertical groove is larger than the diameter of the inner channel of the connecting piece A, and the sliding block is located in the vertical groove and is in sliding connection with the vertical groove.

Preferably, the ball body is provided with an insertion hole, the tangent plane of the insertion hole is polygonal, the bottom of the valve rod is provided with an insertion rod matched with the insertion hole, and the insertion rod is inserted into the insertion hole and is in sealing fit with the insertion hole.

Preferably, set up the sealing washer in the control tube, the valve rod is located the sealing washer and rather than sealed cooperation, and the valve rod rotates with the inner wall of sealing washer to be connected.

Preferably, the inner walls of the connecting piece A, the connecting piece B and the valve body are provided with anti-corrosion plates, and the inner surfaces of the anti-corrosion plates are smooth.

Preferably, the connecting key of the connecting piece A and the connecting piece B are provided with grooves on the outer parts.

Preferably, the handle is provided with anti-slip teeth and is an anti-corrosion handle.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the sliding block is arranged in the connecting piece A, and the knob and the screw rod A are used for driving the sliding block, so that liquid flowing in the connecting piece A can be cut off when the ball valve is replaced or maintained at a later stage, and convenience is provided for workers; the spring is arranged in the valve body, so that once the valve body contracts when cooled when the outside air temperature is low, the valve seat enables the valve seat and the ball body to be always kept in a tight state under the tension of the spring, and the water leakage phenomenon after the ball valve is closed is effectively prevented; by arranging the structure of the pipe cover and the screw B, when the handle is damaged, the handle can be detached by opening the pipe cover, so that the handle is convenient to replace at the later stage; simultaneously the utility model discloses whole sealing performance is good, and corrosion resisting property is good, and sustainable operating time is long.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an internal structural view of the connector A;

fig. 3 is an internal structural view of the valve body.

Reference numerals: 1. a valve body; 2. a connecting piece A; 3. a connecting piece B; 4. a knob; 5. a screw A; 6. a slider; 7. a telescopic pipe; 8. a valve seat; 9. a sphere; 10. a spring; 11. an adjusting tube; 12. a seal ring; 13. a valve stem; 14. a tube cover; 15. a handle cap; 16. a handle; 17. a screw B; 18. and (5) locking the plate.

Detailed Description

Example one

As shown in fig. 1-3, the utility model provides a low temperature resistant ball valve, including valve body 1, slider 6, disk seat 8 and control tube 11. One end of the valve body 1 is provided with a connecting piece A2 communicated with the interior of the valve body 1, and the other end of the valve body 1 is provided with a connecting piece B3 communicated with the interior of the valve body. The connecting piece A2 is rotatably provided with a knob 4, and the bottom of the knob 4 is provided with a screw A5. The slide block 6 is arranged inside the connecting piece A2 in a sliding mode along the vertical direction of the inner channel of the connecting piece A2, and the slide block 6 is in threaded connection with the screw rod A5. The valve seat 8 is symmetrical and slides and sets up in valve body 1, and the symmetry sets up two springs 10 in the valve body 1, and the one end that the spring 10 is close to each other is connected with corresponding side valve seat 8 respectively, and spheroid 9 sets up between both sides valve seat 8, and sets up the through-hole that communicates with connecting piece A2 and connecting piece B3 on the spheroid 9. The adjusting pipe 11 is vertically arranged on the valve body 1, and the inside of the adjusting pipe 11 is communicated with the internal channel of the valve body 1. The adjusting pipe 11 is rotatably provided with a valve rod 13, and the valve rod 13 drives the connecting ball 9. The top end screw thread of adjusting pipe 11 sets up tube cap 14, rotates on the tube cap 14 and sets up handle cap 15, and the side of handle cap 15 sets up handle 16, and the bottom of handle cap 15 sets up screw B17, and screw B17 rotates with tube cap 14 to be connected, and screw B17 drive connection valve rod 13. The screw B17 is provided with a locking plate 18 in a threaded manner, and the locking plate 18 is rotatably connected with the tube cover 14.

In this embodiment, be connected connecting piece A2 and trunk line, be connected connecting piece B3 and outside branch pipe, connecting piece A2, connecting piece B and valve body 1's inside forms a controllable passageway this moment, only need rotate handle 16 can make the through-hole switching direction of spheroid 9 when needing to close to realize pipeline internal closure. When ambient temperature is low, because expend with heat and contract with cold's reason, spheroid 9 can produce certain change on the volume, and both sides disk seat 8 promotes disk seat 8 and removes under the tension effect of spring 10 this moment, and disk seat 8 keeps the laminating with spheroid 9 all the time to avoid the inside liquid of pipeline to follow the gap seepage between disk seat 8 and the spheroid 9.

When the internal structure of the valve body 1 is damaged, the knob 4 is rotated, the knob 4 drives the screw A5 to rotate, the slide block 6 slides downwards and seals the channel in the connecting piece A2 to realize temporary flow cutoff, and the knob 4 is rotated reversely after the valve body is replaced, so that the connecting piece A2 can be restored to flow. When the valve body 1 is only damaged by the handle, the whole valve body does not need to be replaced, the pipe cover 14 can be unscrewed, the locking plate 18 is then reversed, the handle 16 and the screw B17 can be detached together after the locking plate 18 is detached, a new handle 16 is taken, the screw B17 of the new handle 16 is inserted into the pipe cover 14, then the pipe cover 14 is internally screwed to form the locking plate 18, the whole formed by the pipe cover 14 and the handle 16 is pressed downwards, the bottom of the screw B17 is clamped with the top end of the valve rod 13, and the pipe cover 14 is screwed tightly.

Example two

As shown in fig. 3, the utility model provides a low temperature resistant ball valve compares in embodiment one, and the symmetry sets up two flexible pipes 7 in the valve body 1, sets up the spout in the valve body 1, and the spout communicates with the inside passage of valve body 1, and flexible pipe 7 is located the spout, and the stiff end of flexible pipe 7 is connected with one side that the disk seat 8 was kept away from to the spout, and the expansion end of flexible pipe 7 is connected with disk seat 8, and spring 10 is located between the inner wall of valve body 1 and the outer wall of flexible pipe 7.

In this embodiment, because there is liquid in the internal passage of the valve body 1, the spring 10 is extremely easy to corrode in the liquid for a long time, once the spring 10 corrodes, the thrust action on the valve seat 8 disappears, and at this moment, if the volume of the ball 9 is reduced, there is a gap between the valve seat 8 and the ball 9, and the liquid leaks along the gap.

EXAMPLE III

As shown in fig. 3, the utility model provides a low temperature resistant ball valve compares in embodiment one, sets up sealing washer 12 in the regulating tube 11, and valve rod 13 is located sealing washer 12 and rather than sealed cooperation, and valve rod 13 rotates with the inner wall of sealing washer 12 to be connected.

In this embodiment, the seal ring 12 prevents the liquid in the valve body 1 from leaking out of the regulator tube 11.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A low-temperature-resistant ball valve is characterized by comprising a valve body (1), a sliding block (6), a valve seat (8) and an adjusting pipe (11);

one end of the valve body (1) is provided with a connecting piece A (2) communicated with the interior of the valve body, and the other end of the valve body (1) is provided with a connecting piece B (3) communicated with the interior of the valve body; a knob (4) is rotatably arranged on the connecting piece A (2), and a screw A (5) is arranged at the bottom of the knob (4); the sliding block (6) is arranged inside the connecting piece A (2) in a sliding mode along the vertical direction of the internal channel of the connecting piece A (2), and the sliding block (6) is in threaded connection with the screw A (5);

the valve seats (8) are symmetrically and slidably arranged in the valve body (1), the two springs (10) are symmetrically arranged in the valve body (1), one ends, close to each other, of the springs (10) are respectively connected with the valve seats (8) on the corresponding sides, the ball body (9) is arranged between the valve seats (8) on the two sides, and through holes communicated with the connecting piece A (2) and the connecting piece B (3) are formed in the ball body (9);

the adjusting pipe (11) is vertically arranged on the valve body (1), and the inside of the adjusting pipe (11) is communicated with the internal channel of the valve body (1); a valve rod (13) is rotationally arranged in the adjusting pipe (11), and the valve rod (13) is connected with the ball body (9) in a driving way; a pipe cover (14) is arranged on the top end of the adjusting pipe (11) in a threaded mode, a handle cap (15) is arranged on the pipe cover (14) in a rotating mode, a handle (16) is arranged on the side face of the handle cap (15), a screw B (17) is arranged at the bottom of the handle cap (15), the screw B (17) is connected with the pipe cover (14) in a rotating mode, and the screw B (17) is connected with the valve rod (13) in a driving mode; the screw B (17) is provided with a locking plate (18) in a threaded manner, and the locking plate (18) is rotationally connected with the pipe cover (14).

2. The low temperature resistant ball valve according to claim 1, characterized in that two telescopic pipes (7) are symmetrically arranged in the valve body (1), a sliding groove is arranged in the valve body (1), the sliding groove is communicated with the internal channel of the valve body (1), the telescopic pipes (7) are arranged in the sliding groove, the fixed ends of the telescopic pipes (7) are connected with one side of the sliding groove, which is far away from the valve seat (8), the movable ends of the telescopic pipes (7) are connected with the valve seat (8), and the springs (10) are arranged between the inner wall of the valve body (1) and the outer wall of the telescopic pipes (7).

3. A low temperature resistant ball valve according to claim 1, wherein a vertical groove is provided in the connecting member a (2), the vertical groove communicates with the inner passage of the connecting member a (2), and the size of the vertical groove is larger than the diameter of the inner passage of the connecting member a (2), and the slider (6) is located in the vertical groove and slidably connected therewith.

4. A low temperature resistant ball valve according to claim 1, wherein the ball body (9) is provided with a socket having a polygonal cross section, and the bottom of the valve stem (13) is provided with a plug rod which is fitted into the socket and is inserted into the socket in sealing engagement therewith.

5. A low temperature resistant ball valve according to claim 1, wherein a sealing ring (12) is arranged in the adjusting pipe (11), the valve rod (13) is positioned in the sealing ring (12) and is in sealing fit with the sealing ring, and the valve rod (13) is rotatably connected with the inner wall of the sealing ring (12).

6. The low temperature resistant ball valve according to claim 1, wherein the inner walls of the connecting member A (2), the connecting member B (3) and the valve body (1) are provided with corrosion-resistant plates, and the inner surfaces of the corrosion-resistant plates are smooth.

7. A low temperature-resistant ball valve according to claim 1, wherein the connecting key of the connecting member a (2) and the connecting member B (3) are provided with a groove on the outside.

8. The low temperature resistant ball valve according to claim 1, wherein the handle (16) is provided with anti-slip teeth, and the handle (16) is an anti-corrosion handle.