CN208750020U

CN208750020U - A kind of quick cone sealing stop valve of PE

Info

Publication number: CN208750020U
Application number: CN201821386873.0U
Authority: CN
Inventors: 郑本祥; 彭国琴
Original assignee: Sichuan Haiwei Plastic Co Ltd
Current assignee: Sichuan Haiwei Plastic Co Ltd
Priority date: 2018-08-27
Filing date: 2018-08-27
Publication date: 2019-04-16
Anticipated expiration: 2028-08-27

Abstract

The utility model relates to pipeline valve technical fields, and disclose a kind of quick cone sealing stop valve of PE, including valve body, the left and right ends of body cavity are respectively equipped with admission chamber and out sap cavity, one end of admission chamber is located at the surface of sap cavity one end, the junction of admission chamber and sap cavity out is equipped with seal, and the inner wall of seal is contacted with the outer wall of spool, and the top of spool is fixedly connected with skirtboard.The quick cone sealing stop valve of the PE; by the way that attachment cap is arranged; so that valve rod is become being flexibly connected with the connection type of spool from traditional connection that is fixed to integration; to; when rotation valve rod promotes spool; valve rod preferentially rotates and spool is motionless; so that valve rod first cancels the pressure to spool; attachment cap is above mentioned by locating piece again; and then directly spool is above mentioned by valve rod; it overcomes traditional opening and closing method and is first rotated the disadvantage above proposed again to spool, to effectively protect the stability of valve rod Yu spool junction.

Description

A kind of quick cone sealing stop valve of PE

Technical field

The utility model relates to pipeline valve technical field, specially a kind of quick cone sealing stop valve of PE.

Background technique

Shut-off valve is also known as pipe valve valve, belongs to forced seal formula valve, and according to regulation, the flow direction of shut-off valve is used without exception from upper Under and, spool and sealing surface of seat are fitted closely using the pressure of medium, improve sealing performance, therefore when opening the valve, The frictional force and the down thrust as caused by the pressure of medium that valve rod needs the resistance overcome to include valve rod and filler, are opened The power of valve is bigger than the power for closing valve.

In the prior art, what valve rod and spool used is being fixedly connected for integral type, on rotation valve rod band movable valve plug When mentioning, at the beginning by closing to opening, need to overcome the frictional force between spool and the contact surface of valve seat, this is just needed to valve rod More stringent requirements are proposed with the Torsion bearing capacity of spool junction, in valve rod under the erosion by medium for a long time, this connection The case where easily there is torsional property decline and is broken in place, meanwhile, open and close instantaneous section, the relative friction between spool and valve seat It is easier that the sealing performance of contact surface declines, therefore propose a kind of quick cone sealing stop valve of PE.

Utility model content

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides a kind of quick cone sealing stop valve of PE, has valve rod The optimization of connection stress performance, raising spool with valve seat and the sealing performance between valve seat are convenient for the advantages that replacing to sealing element, It solves in valve rod under the erosion by medium for a long time, valve rod and spool junction torsional property decline easily occur and break The case where splitting, meanwhile, instantaneous section is opened and closed, the relative friction between spool and valve seat is it is easier that the sealing performance of contact surface declined Problem.

(2) technical solution

For realize the connection stress performance optimization of above-mentioned valve rod and valve seat, improve sealing performance between spool and valve seat and Convenient for the purpose replaced to sealing element, the utility model is provided the following technical solutions: a kind of quick cone sealing stop valve of PE, packet Valve body is included, the left and right ends of the body cavity are respectively equipped with admission chamber and out sap cavity, and one end of the admission chamber is located at liquid The junction of the surface of chamber one end, the admission chamber and sap cavity out is equipped with seal, the inner wall of the seal and spool Outer wall contact, the top of the spool are fixedly connected with skirtboard, and the inside of the skirtboard and the bottom end screw thread outside attachment cap connect It connects, the top of the attachment cap is fixedly connected with the bottom end of valve rod, and the thread segment in the middle part of the valve rod is threaded with valve pocket, institute The inside of the outside and valve deck of stating valve pocket is fixedly attached, and the bottom end of the valve deck is threadedly coupled with the middle part of top end of the valve body, described The top fixing sleeve of valve deck inner cavity is connected to filler, and the top of the valve rod stretches out the outside of valve deck and is fixedly installed with valve handle, institute The inner wall for stating attachment cap is fixedly connected with limited block, and the limited block and attachment cap are integrally formed, the bottom end of the valve rod outer wall It is fixedly installed with locating piece, the locating piece and valve-stem integrated form.

Preferably, the outer wall of the spool is set as back taper face, and 30 degree of angle of back taper face and vertical plane.

Preferably, the inner wall of the seal is adapted with the outer wall shape of spool, and the inner wall of seal is embedded poly- second Alkene layer, thickness 5mm.

Preferably, the diameter of the skirtboard is greater than the internal diameter on seal top.

Preferably, the top of the attachment cap outer wall is set as positive cone face, and the angle of positive cone face and vertical plane is 60 Degree.

Preferably, the height of the locating piece is the half of attachment cap cavity heights, and two thread pitch phases of valve rod Together, there are two the quantity of the locating piece is set, two locating pieces are adapted arrangement, and two locating pieces and two with limited block A limited block is arranged symmetrically in the inner wall of the outer wall of valve rod and attachment cap respectively.

(3) beneficial effect

Compared with prior art, the utility model provides a kind of quick cone sealing stop valve of PE, has following beneficial Effect:

1, the quick cone sealing stop valve of the PE, by the way that attachment cap is arranged, so that the connection type of valve rod and spool is by passing The connection that is fixed to integration of system becomes being flexibly connected, thus, when rotation valve rod promotes spool, valve rod is preferentially rotated and valve Core is motionless, so that valve rod first cancels the pressure to spool, then is above mentioned by locating piece to attachment cap, and then directly right by valve rod Mentioned on spool, overcome traditional opening and closing method and first rotated the disadvantage above proposed again to spool, thus effectively protect valve rod with The stability of spool junction.

2, the quick cone sealing stop valve of the PE improves spool by skirtboard and is made by upper dielectric pressure by the way that skirtboard is arranged Forced area, so that the connection sealing between spool and seal is improved, meanwhile, skirtboard and attachment cap are connected using screw thread It connects, it can be convenient and efficient convenient for quickly being replaced to the spool of failure.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model attachment cap internal structure front view；

Fig. 3 is the utility model attachment cap internal structure top view.

In figure: 1, valve body；2, admission chamber；3, go out sap cavity；4, seal；5, spool；6, skirtboard；7, attachment cap；8, valve rod； 9, valve pocket；10, valve deck；11, filler；12, valve handle；13, limited block；14, locating piece.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1-3, a kind of quick cone sealing stop valve of PE, including valve body 1, the left and right ends point of 1 inner cavity of valve body Not She You admission chamber 2 and sap cavity 3 out, one end of admission chamber 2 is located at the surface of 3 one end of sap cavity, admission chamber 2 and sap cavity 3 out Junction be equipped with seal 4, the inner wall of seal 4 contacts with the outer wall of spool 5, and the outer wall of spool 5 is set as back taper face, and 30 degree of angle of back taper face and vertical plane, tapered surface contact surface can be improved the contact area of contact surface, to improve contact The sealing performance in face, the inner wall of seal 4 is adapted with the outer wall shape of spool 5, and the inner wall of seal 4 is embedded polyethylene Layer, thickness 5mm, polyethylene is a kind of thermoplastic resin, has excellent resistance to low temperature, chemical stability is good, can The erosion of resistance to most of soda acids, and polyethylene, in non-photooxidation, hot environment, anti-aging property is strong, in the inner loop of valve body 1 In border, there can be longer service life, the top of spool 5 is fixedly connected with skirtboard 6, and the diameter of skirtboard 6 is greater than seal 4 The internal diameter on top guarantees the forced area that skirtboard 6 is acted on by pressure medium, the inside of skirtboard 6 and the bottom end spiral shell outside attachment cap 7 Line connection, the top of 7 outer wall of attachment cap is set as positive cone face, and the angle of positive cone face and vertical plane is 60 degree, so that connection For cap 7 in compression or tension, the stress and transmission force property on top are excellent, the fixed company in the top of attachment cap 7 and the bottom end of valve rod 8 It connects, the thread segment at 8 middle part of valve rod is threaded with valve pocket 9, and the outside of valve pocket 9 and the inside of valve deck 10 are fixedly attached, valve deck 10 Bottom end be threadedly coupled with the middle part on 1 top of valve body, the top fixing sleeve of 10 inner cavity of valve deck is connected to filler 11, the top of valve rod 8 Stretch out the outside of valve deck 10 and be fixedly installed with valve handle 12, the inner wall of attachment cap 7 is fixedly connected with limited block 13, limited block 13 with Attachment cap 7 is integrally formed, and the bottom end of 8 outer wall of valve rod is fixedly installed with locating piece 14, and locating piece 14 and valve rod 8 are integrally formed, fixed The height of position block 14 is the half of 7 cavity heights of attachment cap, and two thread pitch of valve rod 8 are identical, the quantity of locating piece 14 If there are two, two locating pieces 14 are adapted arrangement with limited block 13, and two locating pieces 14 and two limited blocks 13 exist respectively The outer wall of valve rod 8 and the inner wall of attachment cap 7 are arranged symmetrically, so that the top that locating piece 14 rises to 7 inner cavity of attachment cap needs valve Bar 8 rotates a thread pitch, and locating piece 14 is exactly in contact with limited block 13.

When work, when valve is closed, valve handle 12 is rotated clockwise, band ovable valve stem 8 rotates in valve pocket 9, since valve pocket 9 is solid Fixed motionless, so valve rod 8 declines, the bottom end of valve rod 8 rotates in attachment cap 7, when locating piece 14 is contacted with limited block 13, valve Bar 8 stops relatively rotating and spool 5 is pushed to contact with seal 4 with attachment cap 7, and skirtboard 6 is located at the top of seal 4, is situated between The effect of matter pressure, spool 5 and seal 4 are further fitted closely, and when valve opening, rotate counterclockwise valve handle 12, drive valve Bar 8 rises, and the bottom end of valve rod 8 rotates in attachment cap 7, when locating piece 14 and the tip contact of 7 inner cavity of attachment cap, by positioning Block 14 promotes attachment cap 7, to directly promote spool 5.

In conclusion the quick cone sealing stop valve of the PE, by the way that attachment cap 7 is arranged, so that the company of valve rod 8 and spool 5 Connect mode is become being flexibly connected from traditional connection that is fixed to integration, thus, when rotation valve rod 8 promotes spool 5, valve rod 8 preferential rotations and spool 5 is motionless so that valve rod 8 first cancels the pressure to spool 5, then attachment cap 7 is carried out by locating piece 14 It mentions, and then directly spool 5 is above mentioned by valve rod 8, overcome traditional opening and closing method and first rotated the disadvantage above proposed again to spool 5, To effectively protect the stability of valve rod 8 Yu 5 junction of spool；By the way that skirtboard 6 is arranged, spool 5 is improved by upper by skirtboard 6 The forced area of square pressure medium effect, to improve the connection sealing between spool 5 and seal 4, meanwhile, skirtboard 6 with Attachment cap 7, can be convenient and efficient convenient for quickly being replaced to the spool 5 of failure using being threadedly coupled；It solves in valve rod 8 For a long time by under the erosion of medium, easily there is the case where torsional property declines and is broken in valve rod 8 and 5 junction of spool, Meanwhile instantaneous section is opened and closed, the relative friction between spool 5 and valve seat is it is easier that the problem of sealing performance of contact surface declines.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of quick cone sealing stop valve of PE, including valve body (1), it is characterised in that: the left and right two of valve body (1) inner cavity End is respectively equipped with admission chamber (2) and out sap cavity (3), and one end of the admission chamber (2) is located at the surface of sap cavity (3) one end, The admission chamber (2) and the junction of sap cavity (3) out are equipped with seal (4), inner wall and spool (5) of the seal (4) Outer wall contact, the top of the spool (5) are fixedly connected with skirtboard (6), and the inside and attachment cap (7) of the skirtboard (6) are external Bottom end be threadedly coupled, the top of the attachment cap (7) is fixedly connected with the bottom end of valve rod (8), the spiral shell in the middle part of the valve rod (8) Line section is threaded with valve pocket (9), and the outside of the valve pocket (9) and the inside of valve deck (10) are fixedly attached, the valve deck (10) Bottom end be threadedly coupled with the middle part on valve body (1) top, the top fixing sleeve of valve deck (10) inner cavity is connected to filler (11), institute The top for stating valve rod (8) is stretched out the outside of valve deck (10) and is fixedly installed with valve handle (12), and the inner wall of the attachment cap (7) is fixed It is connected with limited block (13), the limited block (13) and attachment cap (7) are integrally formed, and the bottom end of valve rod (8) outer wall is fixed It is equipped with locating piece (14), the locating piece (14) and valve rod (8) are integrally formed.

2. the quick cone sealing stop valve of a kind of PE according to claim 1, it is characterised in that: outside the spool (5) Wall is set as back taper face, and 30 degree of angle of back taper face and vertical plane.

3. the quick cone sealing stop valve of a kind of PE according to claim 1, it is characterised in that: the seal (4) Inner wall is adapted with the outer wall shape of spool (5), and the inner wall of seal (4) is embedded polyethylene layer, thickness 5mm.

4. the quick cone sealing stop valve of a kind of PE according to claim 1, it is characterised in that: the skirtboard (6) it is straight Diameter is greater than the internal diameter on seal (4) top.

5. the quick cone sealing stop valve of a kind of PE according to claim 1, it is characterised in that: the attachment cap (7) is outside The top of wall is set as positive cone face, and the angle of positive cone face and vertical plane is 60 degree.

6. the quick cone sealing stop valve of a kind of PE according to claim 1, it is characterised in that: the locating piece (14) Height is the half of attachment cap (7) cavity heights, and two thread pitch of valve rod (8) are identical, the number of the locating piece (14) There are two amount is set, two locating pieces (14) are adapted arrangement, and two locating pieces (14) and two limits with limited block (13) Position block (13) is arranged symmetrically in the inner wall of the outer wall of valve rod (8) and attachment cap (7) respectively.