CN212509618U

CN212509618U - Three-piece type threaded ball valve

Info

Publication number: CN212509618U
Application number: CN202021074178.8U
Authority: CN
Inventors: 栗志文; 樊殿龙; 陈亚军
Original assignee: Hohhot Mengwa Valve Industry Co ltd
Current assignee: Hohhot Mengwa Valve Industry Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-02-09
Anticipated expiration: 2030-06-11

Abstract

The utility model belongs to the technical field of the valve pipe fitting, concretely relates to three formula screw thread ball valves, including valve body, left valve block and right valve block are located the valve body left and right sides and through the stay bolt with three interconnect, the inside valve ball that sets up of valve body, valve ball top are connected with the valve rod, and the valve rod is worn out the valve body and is connected with the handle, the valve ball left and right sides cooperates respectively has the disk seat, and the disk seat includes contact zone and support section, and the contact zone inner forms first step face, supports section inner formation second step face, first step face and valve ball surface seal contact, second step face and valve ball surface clearance fit, and the second step face is compared first step face and is more close to the valve rod. The utility model provides a three formula screw thread ball valves, the disk seat inboard extends the support section, make full use of valve body inner space, and disk seat structural strength is good, and the life-span is longer.

Description

Three-piece type threaded ball valve

Technical Field

The utility model belongs to the technical field of the valve pipe fitting, concretely relates to three formula screw thread ball valves.

Background

The three-piece ball valve is mainly formed by combining the valve body and the two valve plates positioned on the two sides of the valve body, the structure is convenient to assemble, the sealing performance is good, and the three-piece ball valve is wide in application of pipeline valves. The seal between the ball valve and the valve body is usually realized by a valve seat; the existing valve seat is usually of an annular structure, is tightly attached to the end face of a valve plate and the inner wall of a valve body under the extrusion of a ball valve, and is easy to deform due to the long-term external force effect, so that the service life is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a three formula screw thread ball valves, the disk seat inboard extends the support section, make full use of valve body inner space, and disk seat structural strength is good, and the life-span is longer.

The purpose of the utility model is realized like this: the utility model provides a three formula screw thread ball valve, includes valve body, left valve block and right valve block, and left valve block and right valve block are located the valve body left and right sides and pass through the stay bolt with three interconnect, the inside valve ball that sets up of valve body, valve ball top are connected with the valve rod, and the valve rod is worn out the valve body and is connected with the handle, the valve ball left and right sides cooperates respectively has the disk seat, and the disk seat includes contact segment and support section, and the inner first step face that forms of contact segment supports the inner second step face that forms of section, first step face and valve ball surface sealing contact, second step face and valve ball surface clearance fit, and the second step face is compared first step face and is more close to the valve rod.

Furthermore, a gland nut is sleeved on the valve rod through threads and located below the handle, and a filler is arranged between the gland nut and the valve body.

Further, the material of the filler is PTFE.

Furthermore, a cover plate extending in the radial direction is arranged at the top of the gland nut, and a spring washer is arranged between the cover plate and the top of the valve body.

Furthermore, a clamping block for limiting the rotation position of the handle is arranged at the top of the valve body, the front end of the handle is bent downwards towards the clamping block to form a clamping head, and the rotation position of the clamping head is limited between the clamping blocks; the handle middle part sets up the slip section of slope, and the cover is equipped with the sliding sleeve on the slip section, and the sliding sleeve lower extreme extends has the dead lock pole, the valve body top sets up the dead lock groove of cooperation dead lock pole.

Furthermore, the upper end of the sliding section is provided with a through hole, and the sliding sleeve is provided with a jack.

Compared with the prior art, the utility model outstanding and profitable technological effect is: the valve seat extends towards the valve ball to form a supporting section for sharing the stress of the contact section, and the surface of the supporting section is not in contact with the valve ball, so that the valve ball has smaller rotating resistance and good operability. The handle sets up the dead structure of lock, has reduced unexpected touching and has taken place valve ball pivoted risk.

Drawings

FIG. 1 is a schematic structural view of a three-piece threaded ball valve according to an embodiment of the present invention

Fig. 2 is a schematic view of the handle unlocking state in the embodiment of the present invention;

fig. 3 is a distribution diagram of the positions of the fixture blocks and the locking grooves in the embodiment of the present invention.

Reference numerals: 1. a left valve plate; 2. a right valve plate; 3. a valve body; 4. a handle; 4a, a clamping head; 4b, through holes; 4c, an anti-slip sleeve; 5. a valve stem; 6. a valve ball; 7. a valve seat; 8. a hexagonal nut; 9. a seal ring; 10. a sliding sleeve; 11. a locking lever; 12. a clamping block; 13. a locking groove; 14. a long bolt; 15. a bolt; 16. a gland nut; 17. a spring washer; 18. and (4) filling.

Detailed Description

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

The utility model provides a three formula screw thread ball valve, combines fig. 1 and fig. 2, includes valve body 3, left valve block 1 and right valve block 2, and left valve block 1 and right valve block 2 are located the valve body 3 left and right sides and pass through long bolt 14 with three interconnect. Wherein, the inside valve ball 6 that sets up of

valve body

3, 6 tops of valve ball are inserted and are equipped with valve rod 5, and valve rod 5 wears out valve body 3 and is connected with handle 4, and valve rod 5 installs hexagon nut 8 in handle 4 upper end, and the lower extreme is installed and is pressed cap nut 16. The head of the valve rod 5 is polygonal so as to be conveniently driven to rotate together when the handle 4 is sleeved on the valve rod and rotates, and the hexagonal nut 8 is used for preventing the handle 4 from being separated. The gland nut 16 of below then plays the sealing effect, and valve body 3 forms one end seal chamber in the valve rod 5 outside, and the first half of seal chamber relies on gland nut 16 to compress tightly the packing 18 realization upper seal of PTFE material, and the latter half is pushed down the seal gasket by annular flange on the valve rod 5 and the annular flange on the seal chamber and is realized lower sealedly. Wherein the top of the gland nut 16 is provided with a cover plate extending radially, and a spring washer 17 is arranged between the cover plate and the top of the valve body 3 to play a role of loosening.

Wherein, the 6 left and right sides of valve ball cooperate respectively has disk seat 7, and disk seat 7 includes contact segment and support section, and the inner first step face that forms of contact segment supports the inner second step face that forms of section, and first step face is indent arc face to with 6 surface seal contact of valve ball, second step face and 6 surface clearance fit of valve ball, first step face is compared to the second step face and more is close to valve rod 5. The outer surface of the supporting section abuts against the inner wall of the valve body 3, the circumferential surface of the contact section abuts against the inner wall of the valve body 3, and the outer end face abuts against the end face of the valve plate. Sealing grooves are further formed in two end faces of the valve body 3 and used for assembling the sealing rings 9.

Referring to fig. 1 and 3, the top of the valve body 3 is provided with a fixture block 12 for limiting the rotation position of the handle 4, the front end of the handle 4 is bent downwards towards the fixture block 12 to form a chuck 4a, and the rotation position of the chuck 4a is limited between the fixture blocks 12; the middle part of the handle 4 is provided with an inclined sliding section, the sliding section is sleeved with a sliding sleeve 10, the lower end of the sliding sleeve 10 extends to form a locking rod 11, and the top of the valve body 3 is provided with a locking groove 13 matched with the locking rod 11. Referring to fig. 2, the upper end of the sliding section is provided with a through hole 4b, and the sliding sleeve 10 is provided with a jack. When the unlocking is needed, the sliding sleeve 10 slides upwards to enable the through hole 4b to be aligned with the jack, the bolt 15 is inserted, the sliding sleeve 10 is positioned, the locking rod 11 is separated from the locking groove 13 at the moment, and the handle 4 can rotate. When the bolt 15 is pulled out, the sliding sleeve 10 slides down and is locked again.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a three formula screw thread ball valves, includes valve body (3), left valve block (1) and right valve block (2), and left valve block (1) and right valve block (2) are located valve body (3) left and right sides and through stay bolt (14) with three interconnect, valve body (3) inside sets up valve ball (6), and valve ball (6) top is connected with valve rod (5), and valve body (3) are worn out and handle (4) have been connected in valve rod (5), its characterized in that: valve ball (6) the left and right sides has the cooperation respectively disk seat (7), and disk seat (7) are including contact segment and support section, and contact segment inner forms first step face, supports section inner and forms the second step face, first step face and valve ball (6) surface sealing contact, and second step face and valve ball (6) surface clearance fit, first step face are compared to the second step face and are more close to valve rod (5).

2. A three-piece threaded ball valve according to claim 1, wherein: the valve rod (5) is sleeved with a gland nut (16) in a threaded manner, the gland nut (16) is located below the handle (4), and a filler (18) is arranged between the gland nut (16) and the valve body (3).

3. A three-piece threaded ball valve according to claim 2, wherein: the material of the filler (18) is PTFE.

4. A three-piece threaded ball valve according to claim 2, wherein: the top of the gland nut (16) is provided with a cover plate extending in the radial direction, and a spring washer (17) is arranged between the cover plate and the top of the valve body (3).

5. A three-piece threaded ball valve according to claim 1, wherein: the top of the valve body (3) is provided with clamping blocks (12) for limiting the rotating position of the handle (4), the front end of the handle (4) bends downwards towards the clamping blocks (12) to form clamping heads (4a), and the rotating position of the clamping heads (4a) is limited between the clamping blocks (12); handle (4) middle part sets up the slip section of slope, and the cover is equipped with sliding sleeve (10) on the slip section, and sliding sleeve (10) lower extreme extends has dead lock pole (11), valve body (3) top sets up dead lock groove (13) of cooperation dead lock pole (11).

6. A three-piece threaded ball valve according to claim 5, wherein: the upper end of the sliding section is provided with a through hole (4b), and the sliding sleeve (10) is provided with a jack.