CN210600266U

CN210600266U - Soft and hard double-seal ball valve structure

Info

Publication number: CN210600266U
Application number: CN201921306575.0U
Authority: CN
Inventors: 王志坚
Original assignee: Tianjin Krs Valve Co ltd
Current assignee: Tianjin Krs Valve Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-05-22
Anticipated expiration: 2029-08-13

Abstract

The utility model provides a soft or hard double containment ball valve structure belongs to the ball valve field, including left valve body, the U-shaped ring, the bulge loop, a piston, lead screw and right valve body, the piston setting is in left valve body and right valve body connection cavity, the piston upper end is equipped with the conical surface, the conical surface corresponds the face with the bulge loop and pastes the setting, the bulge loop is placed in the U-shaped ring, the notch cutthroat department in left valve body is installed to the U-shaped ring, the U-shaped ring is the inclined plane with the terminal surface that the conical surface corresponds, U-shaped ring and left valve body side end face sliding connection, be provided with the spring between U-shaped ring and the left valve body, piston side surface and left valve body medial surface are equipped with the air vent, left valve body left end is equipped with the gas outlet, right valve body lower extreme is equipped. The utility model discloses realize the duplicate protection of natural gas channel, avoid revealing, reduce danger.

Description

Soft and hard double-seal ball valve structure

Technical Field

The utility model belongs to the ball valve field relates to a soft or hard double containment ball valve structure.

Background

The ball valve refers to a valve which uses a ball body with a circular through hole as an opening and closing piece, and the ball body rotates along with a valve rod to realize opening and closing actions; the ball body opening and closing piece in the ball valve is driven by the valve rod and rotates around the square working ball valve working axis, so that the ball body opening and closing piece can be used for adjusting and controlling fluid, wherein a strong shearing force is formed between a V-shaped ball core of the hard-seal V-shaped ball valve and a metal valve seat of the surfacing hard alloy, and the hard-seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can also close any channel to connect the other two channels; currently, the current practice is. The ball valve using the natural gas channel is mostly a heavy sealing structure, so that the leakage danger exists, and the use is unsafe.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a improve safety, improve life's soft or hard double containment ball valve structure.

In order to solve the technical problem, the utility model discloses a technical scheme is:

soft or hard double containment ball valve structure, including left valve body, U-shaped ring, bulge loop, piston, lead screw and right valve body, the piston sets up in left valve body and right valve body connection cavity, the piston front end is equipped with the conical surface, the conical surface corresponds the face with the bulge loop and pastes the setting mutually, the bulge loop cup joints in the U-shaped ring, the ladder groove department in left valve body is installed to the U-shaped ring, the U-shaped ring is the inclined plane with the terminal surface that the conical surface corresponds, U-shaped ring and left valve body side end face sliding connection, be provided with the spring between U-shaped ring and the left valve body, piston side surface and left valve body medial surface are equipped with the air duct, left valve body left end is equipped with the gas outlet, right valve body lower extreme is equipped with the air inlet, the air inlet is close to the bulge loop setting to communicate.

Further, the stepped surface department on the stepped groove is provided with the apron of restriction U-shaped ring position, U-shaped ring side is provided with the arch, the apron extends stepped surface one end and corresponds the setting with the arch.

Further, the inclined plane of the upper end of the U-shaped ring is parallel to the conical surface.

Furthermore, the U-shaped ring is made of Enkell and has the hardness of 45-60 HRC.

Furthermore, a second sealing ring is arranged at the connecting end of the U-shaped ring and the left valve body.

Furthermore, a first sealing ring is arranged at the joint of the piston and the right valve body.

Furthermore, a lead screw is arranged at one end, far away from the U-shaped ring, of the piston, one end of the lead screw is connected with the piston through a connecting sleeve, and the other end of the lead screw penetrates through the right valve body to be connected with a driving device.

Furthermore, the lead screw is sleeved with a guide sliding sleeve and a threaded sleeve, the guide sliding sleeve is fixed on the inner wall of the right valve body, and the threaded sleeve is fixed on the outer wall of the right valve body. Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model discloses piston extrusion bulge loop, bulge loop receive elasticity and the piston closely laminates, and the bulge loop is the softwood matter, avoids wearing and tearing to the piston end face, guarantees valve seal nature, and the U-shaped ring is hard material, and the valve setting is in natural gas line, and if the bulge loop burns, the U-shaped ring closely laminates with the piston, realizes duplicate protection.

2. The U-shaped ring of the utility model is made of Yingke's material, has the hardness of 45-60HRC, good corrosion resistance, high temperature oxidation resistance and high strength, and can resist fire.

3. The utility model discloses left valve body and right valve body junction are provided with the sealing washer, guarantee the leakproofness of left valve body and right valve body connection terminal surface; a first sealing ring is arranged at the joint of the right valve body of the piston, so that the sealing property of the connecting end surface of the piston and the right valve body is ensured; the U-shaped ring is provided with a second sealing ring at the end connected with the left valve body, so that the sealing performance of the end face connected with the left valve body is guaranteed.

4. The utility model discloses lead screw one end and piston connection, other end installation drive device, drive arrangement can be for rotating handle or servo motor etc. and the rotatory handle that rotates drives the removal of piston through the lead screw, realizes the switching of valve.

The utility model discloses lead screw and right valve body junction are provided with guide sliding sleeve and bearing, rotate the screw and play the guide effect, change the axle center when preventing that the lead screw is rotatory, improve the precision.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a full sectional view of the structure of the soft and hard double-seal ball valve of the present invention;

FIG. 2 is a detailed view of part A of FIG. 2 according to the present invention;

fig. 3 is a schematic structural diagram of the soft and hard double-seal ball valve structure of the present invention.

Description of reference numerals:

1. a left valve body; 101. an air outlet; 102. a stepped groove; 103. an air inlet; 2. a U-shaped ring; 201. a protrusion; 3. a convex ring; 4. a piston; 401. a conical surface; 5. a lead screw; 6. a right valve body; 7. a spring; 8. rotating the handle; 9. connecting sleeves; 10. a threaded sleeve; 11. a guide sliding sleeve; 12. a first seal ring; 13. a second seal ring; 14. and (7) a cover plate.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and fig. 3, the soft and hard double-sealing ball valve structure comprises a left valve body 1, a U-shaped ring 2, a convex ring 3, a piston 4, a lead screw 5 and a right valve body 6, wherein the piston 4 is arranged in a connecting cavity of the left valve body 1 and the right valve body 6, the front end of the piston 4 is provided with a conical surface 401, the conical surface 401 is arranged to be attached to the corresponding surface of the convex ring 3, the convex ring 3 is sleeved in the U-shaped ring 2, the U-shaped ring 2 is arranged at a stepped groove 102 in the left valve body 1, the end surface of the U-shaped ring 2 corresponding to the conical surface 401 is an inclined surface, the U-shaped ring 2 is connected with the end surface of the left valve body 1 in a sliding manner, a spring 7 is arranged between the U-shaped ring 2 and the left valve body 1, the side surface of the piston 4 and the end surface of the left valve body 1 are provided with a vent passage 15, the left end of the left valve, discharge through vent way 15 to gas outlet 101, piston 4 extrusion bulge loop 3, bulge loop 3 receives elasticity and 4 inseparable laminatings of piston, and bulge loop 3 is the softwood matter, avoids 4 terminal surface wearing and tearing to piston, guarantees valve seal nature, and U-shaped ring 2 is hard material, and the valve setting is in natural gas line, and if the bulge loop 3 burns,

U-shaped ring

2 and 4 inseparable laminatings of piston realize duplicate protection.

As shown in fig. 1 and 2, preferably, a cover plate 14 for limiting the position of the U-shaped ring 2 is disposed at the stepped surface of the upper end of the stepped groove 102, a protrusion 201 is disposed at the side end of the U-shaped ring 2, one end of the cover plate 14 extending out of the stepped surface is disposed corresponding to the protrusion 201, when the U-shaped ring 2 returns to the position of the cover plate 14 by elastic force, the protrusion 201 at the side end is in contact with the corresponding end surface of the cover plate 14, and the cover plate 14 plays a role in limiting the U-shaped.

As shown in fig. 1 and 2, preferably, the inclined plane of the upper end of the U-shaped ring 2 is parallel to the conical surface 401, and after the convex ring is burnt, the U-shaped ring 2 is tightly attached to the conical surface 401 of the piston 4 through elastic force, so that the sealing performance of the valve is ensured.

Preferably, the U-shaped ring 2 is made of England, the hardness is 45-60HRC, the corrosion resistance is good, the temperature oxidation resistance and the strength are high, and the fire disaster resistance can be realized.

As shown in fig. 1 and 2, preferably, a second sealing ring 13 is provided at the end where the U-shaped ring 2 is connected to the left valve body 1, so as to ensure the sealing performance of the end surface where the U-shaped ring 2 is connected to the left valve body 1.

As shown in fig. 1 and 2, a first sealing ring 12 is preferably disposed at a joint of the piston 4 and the right valve body 6, so as to ensure the sealing performance of the joint end surface of the piston 4 and the right valve body 6.

As shown in fig. 1 and 2, preferably, a lead screw 5 is disposed at one end of the piston 4 away from the U-shaped ring 2, one end of the lead screw 5 is connected to the piston 4 through a connecting sleeve 9, and the other end of the lead screw passes through the right valve body 6 and is connected to a driving device, the driving device is a rotating handle 8, the rotating handle 8 is rotated, and the lead screw 5 drives the piston 4 to move, so as to open and close the valve.

As shown in fig. 1 and 2, preferably, the screw 5 is sleeved with a guide sliding sleeve 11 and a threaded sleeve 10, the guide sliding sleeve 11 is fixed on the inner wall of the right valve body 6, and the threaded sleeve 10 is fixed on the outer wall of the right valve body 6, so as to guide the rotation of the screw 5, prevent the axis of the screw 5 from being changed when the screw rotates, and improve the precision.

The practical working process is that the left valve body 1 is tightly connected with the right valve body 6, a sealing ring for ensuring the sealing performance is arranged between the connection parts, the piston 4 is arranged in a cavity inside the connection part of the left valve body 1 and the right valve body 6, the front end face of the piston 4 is a conical surface 401, the conical surface 401 is attached to the corresponding end of the convex ring 3, the convex ring 3 is arranged in the U-shaped ring 2, the U-shaped ring 2 is arranged in a stepped groove 102 inside the left valve body 1 and is in sliding connection with the side wall of the stepped groove 102, one end of the U-shaped ring 2 far away from the convex ring 3 is connected with the left valve body through a spring 7, a cover plate 14 is arranged at the stepped surface on the stepped groove 102, the cover plate 14 plays a limiting role on the U-shaped ring 2, the end face of the U-shaped ring 2 corresponding to the conical surface 401 is an inclined plane which is arranged in parallel to the conical surface 401, the convex ring 3 is made of a soft material, if the convex ring 3 burns, the U-shaped ring 2 is tightly attached to the piston 4, double protection is achieved, an air channel 15 is arranged between the end face of the piston 4 side and the inner wall of the left valve body 1, a first sealing ring 12 for guaranteeing sealing performance is arranged between the end face of the piston 4 side and the inner wall of the right valve body 6, an air inlet 103 is arranged on the side wall of the left valve body 1 and communicated with the air channel 15, an air outlet 101 is arranged at the left end of the left valve body 1, one end, far away from the U-shaped ring 2, of the piston 4 is connected with a lead screw 5 through a connecting sleeve 9, the lead screw 5 penetrates through one end of the right valve body 6 and is provided with a rotating handle 8, the rotating handle 8 rotates to move the piston.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Soft or hard double containment ball valve structure, its characterized in that: including left valve body (1), U ring (2), bulge loop (3), piston (4), lead screw (5) and right valve body (6), piston (4) set up in left valve body (1) and right valve body (6) connection cavity, piston (4) front end is equipped with circular conical surface (401), circular conical surface (401) are pasted the setting with bulge loop (3) corresponding face mutually, bulge loop (3) cup joint in U ring (2), U ring (2) are installed in stepped groove (102) department in left valve body (1), the terminal surface that U ring (2) and circular conical surface (401) correspond is the inclined plane, U ring (2) and left valve body (1) side end face sliding connection, be provided with spring (7) between U ring (2) and left valve body (1), piston (4) side surface and left valve body (1) medial surface are equipped with air duct (15), the left valve body (1) is provided with an air outlet (101) at the left end, the right valve body (6) is provided with an air inlet (103) at the lower end, and the air inlet (103) is arranged close to the convex ring (3) and communicated with the air duct (15).

2. The dual seal ball valve structure of claim 1, wherein: stepped surface department is provided with apron (14) of restriction U-shaped ring (2) position on stepped groove (102), U-shaped ring (2) side is provided with arch (201), apron (14) extend stepped surface one end and correspond the setting with arch (201).

3. The dual seal ball valve structure of claim 1, wherein: the inclined plane of the upper end of the U-shaped ring (2) is parallel to the conical surface (401).

4. The dual seal ball valve structure of claim 1, wherein: the U-shaped ring (2) is made of Enkel and has the hardness of 45-60 HRC.

5. The dual seal ball valve structure of claim 1, wherein: and a second sealing ring (13) is arranged at the connecting end of the U-shaped ring (2) and the left valve body (1).

6. The dual seal ball valve structure of claim 1, wherein: and a first sealing ring (12) is arranged at the joint of the piston (4) and the right valve body (6).

7. The dual seal ball valve structure of claim 1, wherein: one end of the piston (4) far away from the U-shaped ring (2) is provided with a lead screw (5), one end of the lead screw (5) is connected with the piston (4) through a connecting sleeve (9), and the other end of the lead screw penetrates through the right valve body (6) to be connected with a driving device.

8. The dual seal ball valve structure of claim 1, wherein: the lead screw (5) is sleeved with a guide sliding sleeve (11) and a threaded sleeve (10), the guide sliding sleeve (11) is fixed on the inner wall of the right valve body (6), and the threaded sleeve (10) is fixed on the outer wall of the right valve body (6).