CN210978639U

CN210978639U - Fluorine lining disc check valve

Info

Publication number: CN210978639U
Application number: CN201921399509.2U
Authority: CN
Inventors: 方福永
Original assignee: Zhejiang Lierduo Valve Co ltd
Current assignee: Zhejiang Lierduo Valve Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-07-10
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a fluorine lining opposite clamping disc type check valve, which comprises a valve body, wherein a medium channel is arranged in the valve body, a butterfly plate is arranged in the medium channel, a valve shaft is arranged in the butterfly plate in a penetrating way, a torsional spring is sleeved on the valve shaft, two axisymmetric assembling grooves are arranged on the inner wall of the medium channel, threaded blind holes are arranged on the bottom walls of the assembling grooves, a fixed sleeve with a fixed groove is arranged in the assembly groove, one end of the fixed sleeve is fixed in the assembly groove through a bolt, a plurality of clamping pieces are arranged at the other end of the fixed sleeve, the clamping pieces are elastic and are circumferentially distributed along the notches of the assembling grooves, wedge-shaped clamping blocks are arranged at the end parts of the clamping pieces, the external thread of the fixed sleeve is matched with a fastening sleeve, a sleeve cavity is arranged in the fastening sleeve, a round opening for the valve shaft to penetrate through is arranged on the bottom wall of the sleeve cavity, one end of the sleeve cavity corresponding to the round opening is a retraction cavity, and the cross section of the retraction cavity is gradually reduced from the opening end of the sleeve cavity to the round opening end. After improvement, the overall sealing performance of the valve is improved.

Description

Fluorine lining disc check valve

Technical Field

The utility model relates to the technical field of valves, more specifically say, it relates to a lining fluorine is to pressing from both sides dish type check valve.

Background

The check valve is installed in a piping system, and mainly functions to prevent a medium from flowing backward, and is an automatic valve that is opened and closed by a pressure of the medium. Because the traditional structure is processing the through-hole on the valve body, be convenient for pass the valve shaft, however, so, just increased the outer leak source on the valve body, influenced the reliability and the sealing performance of valve, there is the influence to the product quality of valve.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a check valve that whole sealing performance is good, and the reliability is high.

In order to achieve the above purpose, the utility model provides a following technical scheme: a fluorine-lined opposite-clamping disc type check valve comprises a valve body, a medium channel is arranged in the valve body, a butterfly plate is arranged in the medium channel, a valve shaft penetrates through the butterfly plate, a torsional spring is sleeved on the valve shaft, two axisymmetric assembling grooves are arranged on the inner wall of the medium channel, the bottom wall of the assembly groove is provided with a threaded blind hole, a fixed sleeve with a fixed groove is arranged in the assembly groove, one end of the fixing sleeve is fixed in the assembling groove through a bolt, the other end is provided with a plurality of clamping pieces, the clamping pieces are elastic and are circumferentially distributed along the notches of the assembling grooves, wedge-shaped clamping blocks are arranged at the end parts of the clamping pieces, the external thread of the fixed sleeve is matched with a fastening sleeve, a sleeve cavity is arranged in the fastening sleeve, a round opening for the valve shaft to penetrate through is arranged on the bottom wall of the sleeve cavity, one end of the sleeve cavity corresponding to the round opening is a retraction cavity, and the cross section of the retraction cavity is gradually reduced from the opening end of the sleeve cavity to the round opening end.

The utility model discloses further set up to: be equipped with the socket of two axisymmetrics on the inner wall of fixed slot, the socket interpolation is equipped with the locating part, the locating part is the T font setting, is made by having elastic metal material, the locating part penetrates by the socket of one end, is worn out by the socket of the other end.

The utility model discloses further set up to: the butterfly plate is provided with a buffer groove, a buffer plate and a spring are arranged in the buffer groove, and the spring is made into the buffer plate.

Through adopting above-mentioned technical scheme, improve the fixed mode of valve shaft, make it when the assembly is fixed, need not drill the valve body, lead to the sealing performance of whole valve to reduce, have the risk of easily leaking, have the effect that promotes valve reliability. The valve shaft is assembled through the fixing sleeve and the fastening sleeve, so that the valve shaft is convenient to detach and convenient to maintain and replace.

Drawings

FIG. 1 is a sectional view of the present invention;

FIG. 2 is an enlarged view of a portion a of FIG. 1;

FIG. 3 is an exploded view of the securing sleeve and the adapter sleeve;

FIG. 4 is a schematic structural diagram of a limiting member;

fig. 5 is a partial structural exploded view of the butterfly plate.

1. A valve body; 10. a media channel; 11. assembling a groove; 12. a threaded blind hole; 2. a valve shaft; 3. a butterfly plate; 30. A buffer tank; 31. a buffer plate; 32. a spring; 4. fixing a sleeve; 40. a fastener; 41. a wedge-shaped fixture block; 42. A socket; 43. fixing grooves; 5. fastening sleeves; 50. a sleeve cavity; 51. a round mouth; 52. retracting the cavity; 6. and a limiting member.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 5.

A fluorine lining butterfly check valve comprises a valve body 1, wherein a medium channel 10 is arranged in the valve body 1, a butterfly plate 3 is arranged in the medium channel 10, a valve shaft 2 penetrates through the butterfly plate 3, a torsion spring is sleeved on the valve shaft 2, two axisymmetric assembling grooves 11 are formed in the inner wall of the medium channel 10, threaded blind holes 12 are formed in the bottom wall of each assembling groove 11, a fixing sleeve 4 with a fixing groove 43 is arranged in each assembling groove 11, one end of each fixing sleeve 4 is fixed in each assembling groove 11 through a bolt, a plurality of clamping pieces 40 are arranged at the other end of each fixing sleeve 4, each clamping piece 40 has elasticity and is circumferentially distributed along the opening of each assembling groove 11, wedge-shaped clamping blocks 41 are arranged at the end parts of the clamping pieces 40, fastening sleeves 5 are externally threaded and provided with fastening sleeves 5, sleeve cavities 50 are arranged in the fastening sleeves 5, and round openings 51 for the valve shaft 2 to penetrate, one end of the sleeve cavity 50 corresponding to the round mouth 51 is a retraction cavity 52, and the cross section of the retraction cavity 52 gradually decreases from the open end of the sleeve cavity 50 to the end of the round mouth 51. Be equipped with two axisymmetric sockets 42 on the inner wall of fixed slot 43, the socket 42 interpolation is equipped with locating part 6, locating part 6 is the T font setting, is made by having elastic metal material, locating part 6 penetrates by the socket 42 of one end, wears out by the socket 42 of the other end.

When the valve shaft 2 is assembled, the fixing sleeve 4 is firstly embedded in the assembling groove 11, and the fixing sleeve 4 is fixed through the matching of the bolt and the threaded blind hole 12. The fastening sleeve 5 is inserted on the valve shaft 2, and the valve shaft 2 is inserted in the fixing groove 43 of the fixing sleeve 4. Screwing the fastening sleeve 5 and the fixed sleeve 4 in a threaded fit manner, the clamping piece 40 on the fixed sleeve 4 can enter the retraction cavity 52 of the fastening sleeve 5, and the wedge-shaped clamping block 41 at the end part of the clamping piece 40 is extruded by the inner wall of the retraction cavity 52, so that the clamping piece 40 between adjacent parts is extruded mutually and is in contact with the outer wall of the valve shaft 2, the effect of tightly biting the valve shaft 2 is achieved, and the two ends of the valve shaft 2 are fixed. In order to enhance the fixing effect, the limiting member 6 is inserted into the fixing sleeve 4 along the insertion opening 42, one end of the limiting member abuts against the outer wall of the fixing sleeve 4, the insertion opening 42 penetrates through the other end of the limiting member, and the end portion is bent to prevent the limiting member 6 from being dislocated. Therefore, two end parts of the valve shaft 2 can be abutted against the limiting part 6, the function of positioning the valve shaft 2 is achieved, and the stability is higher due to the work of the valve shaft. Due to the structural arrangement, the problem of hole opening of the valve body 1 is avoided, and the overall sealing performance is improved.

The butterfly plate 3 is provided with a buffer groove 30, a buffer plate 31 and a spring 32 are arranged in the buffer groove 30, and the spring 32 is made into the buffer plate 31. After the valve is closed, the medium of backward flow can produce great impact force to butterfly plate 3, and the buffer board 31 is scalable through setting up of spring 32, plays the effect of alleviating partial impact force, plays the effect of protection butterfly plate 3.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a lining fluorine is to pressing from both sides dish type check valve, includes the valve body, be equipped with medium channel in the valve body, be equipped with the butterfly plate in the medium channel, wear to be equipped with the valve shaft in the butterfly plate, the cover is equipped with torsional spring, its characterized in that on the valve shaft: be equipped with the assembly groove of two axisymmetrics on medium channel's the inner wall, be equipped with the screw thread blind hole on the diapire of assembly groove, be equipped with the fixed cover that has the fixed slot in the assembly groove, the one end of fixed cover is passed through the bolt fastening and is in the assembly groove, is equipped with a plurality of fasteners on the other end, the fastener has elasticity, is the circumference along the notch of assembly groove and distributes, the tip of fastener is equipped with the wedge fixture block, fixed cover external screw thread is furnished with the adapter sleeve, the cover chamber has in the adapter sleeve, be equipped with the round mouth that supplies the valve shaft to wear to establish on the diapire of cover chamber, the one end that the cover chamber corresponds the round mouth is indentation chamber, the cross section in indentation chamber is by.

2. The fluorine-lined double-disc check valve as set forth in claim 1, wherein: be equipped with the socket of two axisymmetrics on the inner wall of fixed slot, the socket interpolation is equipped with the locating part, the locating part is the T font setting, is made by having elastic metal material, the locating part penetrates by the socket of one end, is worn out by the socket of the other end.

3. The fluorine-lined double-disc check valve as set forth in claim 1, wherein: the butterfly plate is provided with a buffer groove, a buffer plate and a spring are arranged in the buffer groove, and the spring is made into the buffer plate.