CN211715786U - Hidden rod angle type stop valve - Google Patents

Hidden rod angle type stop valve Download PDF

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Publication number
CN211715786U
CN211715786U CN202020018722.0U CN202020018722U CN211715786U CN 211715786 U CN211715786 U CN 211715786U CN 202020018722 U CN202020018722 U CN 202020018722U CN 211715786 U CN211715786 U CN 211715786U
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China
Prior art keywords
valve
clack
ring
seat ring
sleeved
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Application number
CN202020018722.0U
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Chinese (zh)
Inventor
高永辉
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Wuhan Hande Valve Co ltd
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Wuhan Hande Valve Co ltd
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Priority to CN202020018722.0U priority Critical patent/CN211715786U/en
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Abstract

The utility model discloses a hidden rod angle stop valve, relating to the technical field of pipeline valves, which comprises a valve body, wherein a cavity is arranged in the valve body, and the valve body is connected with a valve cover; the valve clack is arranged in the cavity, one end of the valve clack is sleeved with a valve clack sleeve, the other end of the valve clack is sleeved with a valve rod, and the valve rod is connected with a hand wheel; the valve seat ring is in threaded connection with the valve body and is provided with a groove and a limiting groove which are communicated with each other, a triangular ring is arranged in the groove, and a pressing ring is arranged in the limiting groove; the valve seat ring is made of metal material, and the valve clack sleeve is provided with a hard sealing surface; when the hard sealing surface is contacted with the triangular ring, a primary soft seal is formed; the hard seal surface forms a secondary hard seal when in contact with the seat ring. The utility model improves the sealing reliability of the valve; meanwhile, the valve clack sleeve is sleeved at the end part of the valve clack, and the valve seat ring is in threaded connection with the valve body, so that the triangular ring, the valve clack sleeve and the valve seat ring which form sealing have replaceability, and the use cost of the valve can be reduced.

Description

Hidden rod angle type stop valve
Technical Field
The utility model relates to a pipeline valve technical field, concretely relates to hidden pole angle stop valve.
Background
The stop valve is also called as a stop valve, and is one of the stop valves. The stop valve belongs to a forced sealing type valve, is widely applied to the industries of petrifaction, electric power, metallurgy, chemical industry and the like, and plays an important role in conveying and adjusting chemical raw material products.
Compare in ball valve and butterfly valve, the overall dimension of stop valve is great, and installation and transportation not convenient for, and when the sealed face of valve clack damaged, need change whole valve clack, extravagant material promptly, influence man-hour again. In addition, the sealing forms of the stop valve include soft sealing and hard sealing. The existing stop valve generally adopts a single sealing mode, although the structure is simple and the manufacture is easy, under special working conditions, the sealing performance is insufficient, and the medium is easy to leak.
SUMMERY OF THE UTILITY MODEL
To one of the defects that exist among the prior art, the utility model aims to provide a dark pole angle stop valve, sealing reliability is high, and forms sealed triangle circle, valve clack cover and valve seat circle and all have the replaceability.
In order to achieve the above purpose, the utility model adopts the technical proposal that: a non-rising stem angle shut-off valve, comprising:
the valve body is internally provided with a cavity and is connected with a valve cover, and the valve cover is buckled above the cavity;
the valve clack is arranged in the cavity, one end of the valve clack is sleeved with a valve clack sleeve, the other end of the valve clack is sleeved with the valve rod and is in threaded connection with the valve rod, and one end, far away from the valve clack, of the valve rod penetrates out of the valve cover to be connected with a hand wheel;
a valve seat ring which is connected in the valve body in a threaded manner, wherein one side of the valve seat ring facing the valve clack sleeve is provided with a groove and a limiting groove which are communicated with each other, the limiting groove is positioned above the groove, a triangular ring is arranged in the groove, and a pressing ring for pressing the triangular ring is arranged in the limiting groove;
the valve seat ring is made of metal materials, and the valve clack sleeve is provided with a hard sealing surface which is in contact with the valve seat ring;
when the hard sealing surface is contacted with the triangular ring, a primary soft seal is formed; the hard seal surface forms a secondary hard seal when in contact with the seat ring.
On the basis of the technical scheme, the inner wall of the cavity is provided with a vertical anti-rotation block, and the valve clack is provided with a guide groove matched with the anti-rotation block.
On the basis of the technical scheme, the part of the valve rod, which is positioned in the valve cover, is sleeved with the filler and the handle cap, the valve cover is provided with internal threads, the handle cap is provided with external threads matched with the internal threads, and the handle cap is fixedly arranged above the filler.
On the basis of the technical scheme, the valve rod is sequentially sleeved with a lower pressing plate, a spring and an upper pressing plate from bottom to top, the lower pressing plate is pressed above the filler, and the handle cap is pressed above the upper pressing plate.
On the basis of the technical scheme, the upper pressing plate and the lower pressing plate are oppositely arranged and comprise cylindrical bodies, the valve rod is sleeved with the bodies, a circle of flange is arranged at one end of each body, the bodies are sleeved with the springs, and the end faces of the springs abut against the flanges.
On the basis of the technical scheme, the packing is V-shaped packing, and a V-shaped opening of the V-shaped packing faces downwards.
On the basis of the technical scheme, the valve clack sleeve is fixedly connected with the valve clack through a fastener.
On the basis of the technical scheme, an inlet channel and an outlet channel which are perpendicular to each other are further arranged in the valve body, the inlet channel is communicated with the lower portion of the cavity, and the outlet channel is communicated with one side of the cavity.
On the basis of the technical scheme, an O-shaped sealing ring is arranged between the valve seat ring and the valve body.
On the basis of the technical scheme, the valve body is fixedly connected with the valve cover through the double-end stud and the hexagon nut.
Compared with the prior art, the utility model has the advantages of:
(1) in the hidden rod angle stop valve, the triangular ring and the valve seat ring form a double sealing mode of combining hardness and softness with the valve clack sleeve respectively, thereby improving the sealing reliability of the valve; meanwhile, the valve clack sleeve is sleeved at the end part of the valve clack, and the valve seat ring is in threaded connection with the valve body, so that the triangular ring, the valve clack sleeve and the valve seat ring which are sealed have replaceability, the use cost of the valve can be reduced, and the service life of the valve can be prolonged.
(2) The utility model provides a hidden pole angle type stop valve puts into the clamping ring through the spacing groove at the valve clack cover to compress tightly the triangle circle through the clamping ring, prevent that the triangle circle from droing.
(3) The utility model provides a dark pole angle type stop valve through the cooperation of preventing commentaries on classics piece and guide way, can ensure at the rotatory in-process of valve rod, and the valve clack only goes up and down, and the irrotational has realized the dark pole structure of valve, and then reduces the overall dimension of stop valve, is favorable to the production and processing, transportation and the installation of valve.
(4) In the hidden rod angle stop valve, the handle cap enables the spring to provide initial pretightening force by compressing the upper pressing plate, and pushes the lower pressing plate to move downwards, so that the filler is compressed, and the sealing property of the valve rod is improved; meanwhile, the sealing specific pressure of the filler is adjusted by rotating the handle cap to compress the spring.
Drawings
FIG. 1 is a schematic structural view of a hidden rod angle stop valve according to an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is an enlarged view of B in FIG. 1;
FIG. 4 is a schematic structural diagram of a valve flap according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a valve seat ring according to an embodiment of the present invention;
fig. 6 is a schematic structural view of the lower pressing plate in the embodiment of the present invention.
Reference numerals:
1-a valve body, 11-a cavity, 12-an anti-rotation block, 13-an inlet channel and 14-an outlet channel;
2-valve cover, 21-double end stud;
3-valve clack, 31-guide groove;
4-valve clack sleeve, 41-hard sealing surface, 42-fastening piece;
5-valve stem, 51-filler, 52-cap, 53-lower pressure plate, 531-body, 532-flange, 54-spring, 55-upper pressure plate;
6-hand wheel;
7-valve seat ring, 71-triangular ring and 72-press ring;
8-O-shaped sealing ring.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1-3, the present invention provides an embodiment of a hidden rod angle stop valve that includes a valve body 1, a valve bonnet 2, a valve flap 3, a valve stem 5, and a valve seat ring 7.
The valve body 1 is internally provided with a cavity 11, the valve body 1 is connected with a valve cover 2, and the valve cover 2 is buckled above the cavity 11. Wherein, still be equipped with inlet channel 13 and outlet channel 14 mutually perpendicular in the valve body 1, above-mentioned inlet channel 13 communicates in the below of cavity 11, above-mentioned outlet channel 14 communicates in one side of cavity 11.
Referring to fig. 4, the valve flap 3 is disposed in the cavity 11, a valve flap sleeve 4 is sleeved on one end of the valve flap 3, the other end of the valve flap 3 is sleeved on the outer side of the end of the valve rod 5, and the valve flap 3 is in threaded connection with the valve rod 5. The valve rod 5 is far away from the valve clack 3, one end of the valve rod penetrates out of the valve cover 2, the end of the valve rod 5 is connected with a hand wheel 6, and the hand wheel 6 is rotated to drive the valve rod 5 to rotate.
Referring to fig. 5, the valve seat ring 7 is positioned in the valve body 1 and is in threaded connection with the valve body 1, and in particular, the valve seat ring 7 is fixed at the connection between the cavity 11 and the inlet passage 13. Annular slot and spacing groove have been seted up towards one side of above-mentioned valve clack cover 4 to above-mentioned valve seat circle 7, and slot and spacing groove communicate each other, and the spacing groove is located the slot top. A triangular ring 71 is arranged in the groove, a pressing ring 72 is arranged in the limiting groove, and the pressing ring 72 is arranged above the triangular ring 71 in a pressing mode. When the triangular ring 71 is placed in the groove, the pressing ring 72 can be placed in the limiting groove, so that the triangular ring 71 is pressed through the pressing ring 72, and the triangular ring 71 is prevented from falling off.
The valve seat ring 7 is made of a metal material, and the valve flap sleeve 4 has a hard seal surface 41 which is in contact with the valve seat ring 7. When the hard seal face 41 comes into contact with the triangular ring 71, a primary soft seal is formed. The hard seal surface 41 forms a secondary hard seal when in contact with the seat ring 7.
When the valve is closed, firstly the triangular ring 71 contacts with the hard sealing surface 41 to realize primary soft sealing, and when the valve clack 3 continues to move downwards, the valve seat ring 7 contacts with the hard sealing surface 41 to form secondary hard sealing. The valve can be ensured to reach above A-level sealing standard specified by GB/T13927 valve pressure test by a soft and hard sealing structure arranged on the valve seat ring 7, namely no visible leakage exists in the pressure sustainable time.
The hidden rod angle type stop valve of the embodiment has the advantages that the triangular ring 71 and the valve seat ring 7 form a soft and hard combined double sealing mode with the valve clack sleeve 41 respectively, the sealing reliability of the valve is improved, and the hidden rod angle type stop valve is particularly suitable for the working condition that a medium is gas or pure liquid and the sealing requirement is strict. Meanwhile, the valve clack sleeve 4 is sleeved at the end part of the valve clack 3, and the valve seat ring 7 is in threaded connection with the valve body 1, so that the triangular ring 71, the valve clack sleeve 4 and the valve seat ring 7 which form sealing have replaceability, the use cost of the valve can be reduced, and the service life of the valve can be prolonged.
When the sealing member is damaged, the valve cover 2 may be directly disassembled on-line. If the triangular ring 71 is damaged, the press ring 72 is removed, and the triangular ring 71 is taken out for replacement; if the valve seat ring 7 is damaged, the valve seat ring 7 is screwed down from the valve body 1 for replacement; if the valve clack sleeve 4 is damaged, the valve clack sleeve 4 is detached from the valve clack 3 for replacement, and the replacement process is quick, simple and convenient.
Preferably, the triangular ring 71 is made of a fluororubber material, and the valve seat ring 7 is made of a stainless steel material. The hard sealing surface 41 of the valve clack sleeve 4 is welded with STL6 cobalt-based alloy, the thickness is more than or equal to 2, the HRC is more than or equal to 40, and the valve clack sleeve is wear-resistant and scratch-resistant.
On the basis of the above embodiment, in this embodiment, the inner wall of the cavity 11 is provided with a vertical rotation preventing block 12, and the valve flap 3 is provided with a guide groove 31 adapted to the rotation preventing block 12. Through the cooperation of the rotation prevention block 12 and the guide groove 31, it can be ensured that the valve clack 3 only goes up and down without rotation in the rotation process of the valve rod 5. The non-rising stem structure of the valve is realized by converting the rotary motion of the valve stem 5 into the lifting operation of the valve clack 3.
In the embodiment, the valve rod 5 and the valve clack 3 are connected by adopting left-handed trapezoidal threads, so that firm and reliable connection is realized, and flexible connection can still be ensured under the condition that the valve clack sealing pair is replaced for many times. 5 rotary motion of valve rod does not go up and down, has not only reduced the overall dimension of stop valve, and whole height reduces promptly, is favorable to the production and processing, transportation and the installation of valve simultaneously.
In addition to the above embodiments, in the present embodiment, a packing 51 and a cap 52 are sleeved on a portion of the valve stem 5 located in the bonnet 2, the bonnet 2 is provided with an internal thread, the cap 52 is provided with an external thread adapted to the internal thread, and the cap 52 is fixedly disposed above the packing 51. The packing 51 ensures the sealing between the valve stem 5 and the bonnet 2.
Further, the valve rod 5 is further provided with a lower pressure plate 53, a spring 54, and an upper pressure plate 55, which are sequentially fitted from the bottom up, and the lower pressure plate 53 is pressed above the packing 51. The handle cap 52 is pressed above the upper pressure plate 55, and the lower end of the handle cap 52 is sleeved outside the upper pressure plate 55 and the spring 54. The cap 52 presses the upper press plate 55, thereby pressing the lower press plate 53 and the filler 51 below the lower press plate 53.
Wherein the spring 54 is a cylindrical coil spring. The upper and lower press plates 55, 53 are both made of PTFE. The initial pre-tightening force is provided by the spring 54, which pushes the lower pressure plate 53 to move downward, so that the packing 51 is compressed, and the sealing performance of the valve rod 5 is further improved.
After the valve is installed, if leakage occurs at the position of the filler 51, the handle cap 52 can be directly screwed downwards to compress the spring 54, so that a larger pretightening force is generated to compress the filler 51, the filler 51 is compressed again, and the adjustability of the specific sealing pressure of the filler 51 is realized.
Referring to fig. 6, in the present embodiment, the upper pressure plate 55 and the lower pressure plate 53 have the same structure, the upper pressure plate 55 and the lower pressure plate 53 are disposed opposite to each other, and both of them include a cylindrical body 531, the body 531 is sleeved on the valve rod 5, one end of the body 531 is provided with a ring of flange 532, the spring 54 is sleeved on the body, and the end surface of the spring 54 abuts against the flange 532. Therefore, the two ends of the spring are respectively sleeved on the two bodies 531, and the two end surfaces of the spring are respectively abutted against the opposite surfaces of the two flanges 532.
Preferably, the packing 51 is a V-shaped packing, and a V-shaped opening of the V-shaped packing faces downward. When the V-shaped packing is pressed downwards, a better sealing effect can be achieved.
Optionally, a packing pad is further sleeved on the valve rod 5, the packing pad is located below the packing 51, and the lower end of the packing pad abuts against the valve cover 3.
Optionally, a hexagonal nut is further screwed on the valve stem 5, and the hexagonal nut is located on one side of the hand wheel 6 far away from the handle cap 52, and the hand wheel 6 can be prevented from being disengaged through the hexagonal nut.
On the basis of the above embodiment, in the present embodiment, the valve flap sleeve 4 is fixedly connected to the valve flap 3 by the fastening member 42. Optionally, the fastener 42 is a socket head cap screw. When the valve clack sleeve 4 is damaged, the inner hexagon screw is unscrewed, and then the valve clack sleeve 4 can be replaced.
Further, an O-ring 8 is provided between the seat ring 7 and the valve body 1. The seal between the seat ring 7 and the valve body 1 is achieved by an O-ring seal 8.
In this embodiment, the valve body 1 and the valve cap 2 are fixedly connected through the stud 21 and the hexagon nut, and the contact end surface of the valve body 1 and the valve cap 2 is provided with the sealing gasket, so that the sealing between the valve body 1 and the valve cap 2 is realized through the sealing gasket.
In the embodiment, when the hand wheel 6 is rotated clockwise, the hand wheel 6 drives the valve rod 5 to rotate clockwise, so as to drive the valve clack 3 to move downwards, and the valve is closed; when the hand wheel 6 is rotated anticlockwise, the hand wheel 6 drives the valve rod 5 to rotate anticlockwise, and then the valve clack 3 is driven to move upwards, so that the valve is opened.
The dark pole angle formula stop valve of this embodiment utilizes triangle circle and valve seat circle respectively with the soft or hard dual seal that the valve clack cover formed to and this sealed vice convertibility, can improve the life of valve, reduce equipment down time, and then improve production efficiency.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.

Claims (10)

1. A non-rising stem angle shut-off valve, comprising:
the valve comprises a valve body (1), wherein a cavity (11) is arranged in the valve body (1), the valve body (1) is connected with a valve cover (2), and the valve cover (2) is buckled above the cavity (11);
the valve clack (3) is arranged in the cavity (11), one end of the valve clack (3) is sleeved with a valve clack sleeve (4), the other end of the valve clack (3) is sleeved with the valve rod (5) and is in threaded connection with the valve rod (5), and one end, far away from the valve clack (3), of the valve rod (5) penetrates through the valve cover (2) to be connected with a hand wheel (6);
the valve seat ring (7) is in threaded connection with the valve body (1), one side, facing the valve clack sleeve (4), of the valve seat ring (7) is provided with a groove and a limiting groove which are communicated with each other, the limiting groove is located above the groove, a triangular ring (71) is installed in the groove, and a pressing ring (72) used for pressing the triangular ring (71) is arranged in the limiting groove;
the valve seat ring (7) is made of metal materials, and the valve flap sleeve (4) is provided with a hard sealing surface (41) which is in contact with the valve seat ring (7);
when the hard sealing surface (41) is contacted with the triangular ring (71), a primary soft seal is formed; the hard sealing surface (41) forms a secondary hard seal when in contact with the valve seat ring (7).
2. The concealed stem angle shut-off valve of claim 1, wherein: the inner wall of the cavity (11) is provided with a vertical anti-rotation block (12), and the valve clack (3) is provided with a guide groove (31) matched with the anti-rotation block (12).
3. The concealed stem angle shut-off valve of claim 1, wherein: the valve rod (5) is positioned on the part, inside the valve cover (2), of the valve cover (2) and is sleeved with a filler (51) and a handle cap (52), the valve cover (2) is provided with an internal thread, the handle cap (52) is provided with an external thread matched with the internal thread, and the handle cap (52) is fixedly arranged above the filler (51).
4. The drop leg angle shut off valve of claim 3, wherein: the valve rod (5) is sequentially sleeved with a lower pressing plate (53), a spring (54) and an upper pressing plate (55) from bottom to top, the lower pressing plate (53) is arranged above the filler (51) in a pressing mode, and the handle cap (52) is arranged above the upper pressing plate (55) in a pressing mode.
5. The concealed stem angle shut-off valve of claim 4, wherein: the upper pressure plate (55) and the lower pressure plate (53) are arranged in opposite directions, the upper pressure plate and the lower pressure plate both comprise a cylindrical body (531), the valve rod (5) is sleeved with the body (531), one end of the body (531) is provided with a circle of flange (532), the body is sleeved with the spring (54), and the end face of the spring (54) is abutted to the flange (532).
6. The concealed stem angle shut-off valve of claim 4, wherein: the packing (51) is V-shaped packing, and a V-shaped opening of the V-shaped packing faces downwards.
7. The concealed stem angle shut-off valve of claim 1, wherein: the valve clack sleeve (4) is fixedly connected with the valve clack (3) through a fastener (42).
8. The concealed stem angle shut-off valve of claim 1, wherein: still be equipped with mutually perpendicular's inlet channel (13) and outlet channel (14) in valve body (1), inlet channel (13) communicate in cavity (11) below, outlet channel (14) communicate in cavity (11) one side.
9. The concealed stem angle shut-off valve of claim 1, wherein: an O-shaped sealing ring (8) is arranged between the valve seat ring (7) and the valve body (1).
10. The concealed stem angle shut-off valve of claim 1, wherein: the valve body (1) is fixedly connected with the valve cover (2) through a double-end stud (21) and a hexagon nut.
CN202020018722.0U 2020-01-06 2020-01-06 Hidden rod angle type stop valve Active CN211715786U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020018722.0U CN211715786U (en) 2020-01-06 2020-01-06 Hidden rod angle type stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020018722.0U CN211715786U (en) 2020-01-06 2020-01-06 Hidden rod angle type stop valve

Publications (1)

Publication Number Publication Date
CN211715786U true CN211715786U (en) 2020-10-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020018722.0U Active CN211715786U (en) 2020-01-06 2020-01-06 Hidden rod angle type stop valve

Country Status (1)

Country Link
CN (1) CN211715786U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022199230A1 (en) * 2021-03-23 2022-09-29 浙江盾安人工环境股份有限公司 Electronic expansion valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022199230A1 (en) * 2021-03-23 2022-09-29 浙江盾安人工环境股份有限公司 Electronic expansion valve

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