CN210218697U - Self-sealing balance stop valve - Google Patents
Self-sealing balance stop valve Download PDFInfo
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- CN210218697U CN210218697U CN201921082825.7U CN201921082825U CN210218697U CN 210218697 U CN210218697 U CN 210218697U CN 201921082825 U CN201921082825 U CN 201921082825U CN 210218697 U CN210218697 U CN 210218697U
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Abstract
The utility model discloses a self sealss balance stop valve relates to valve technical field. The application provides a balanced stop valve of self sealss sets up the recess through setting up the self-sealing pad on the horizontal terminal surface of valve body and valve gap connection in the recess, realizes the self sealss of valve body and valve gap, is provided with built-in notes alicyclic in the stuffing box of valve gap, at the assembled, injects sealed fat earlier in annotating the fat intra-annular, and sealed fat realizes the secondary seal of valve rod. The self-sealing balance stop valve of the utility model can realize the self-sealing between the valve body and the valve cover, and the sealing is tighter when the pressure is higher; realize the sealing of valve rod and valve gap, seal structure is resistant erodeing and erodeing, prolongs the life of stop valve, just the utility model discloses a stop valve, simple structure easily assembles.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a balanced stop valve of self sealss.
Background
The opening and closing part of the stop valve is a plug-shaped valve clack, the upper surface of the seal is a plane or a conical surface, and the central line of the valve clack banquet valve seat moves linearly. The valve rod can be operated in a lifting rod and a rotary lifting rod, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, so that the shutoff stop valve is very suitable for cutting or adjusting and throttling. The valve rod of the valve is relatively short in opening or closing and has a reliable cut-off function, and the change of the valve seat opening is in direct proportion to the stroke of the valve clack, so that the valve is very suitable for adjusting the flow.
The sealing performance of stop valve has decided the use of stop valve, and current stop valve generally includes valve body and valve gap, close through the bolt between valve body and the valve gap, the valve gap lower extreme part stretches into in the valve body and the contact of valve barrel, set up the sealing washer between the part that the valve gap stretches into the valve body and the valve body inner wall, form the sealed between valve body and the valve gap, this kind of structure can cause the medium to spill over from the gap between valve body and the valve gap when the stop valve state of opening, and the medium can form erosion and washing to the sealing washer between valve body and the valve gap, long-time erosion and washing, can cause the sealed inefficacy between valve body and the valve gap, thereby lead to the medium to spill over from between valve body and.
Meanwhile, a sealing structure exists between the valve rod and the valve cover of the existing stop valve, but the existing sealing structure is only sealed in a sealing ring mode, and the sealing failure of the sealing ring can be caused under the long-time erosion and washing of media, so that the media overflow from a gap between the valve rod and the valve cover. Potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that exists among the above-mentioned prior art and not enough, this application provides a balanced stop valve of self sealss, the utility model discloses a stop valve aims at solving the seal structure life of stop valve among the prior art short, easily causes sealed inefficacy, has the problem of potential safety hazard. The application provides a balanced stop valve of self sealss sets up the recess through setting up the self-sealing pad on the horizontal terminal surface of valve body and valve gap connection in the recess, realizes the self sealss of valve body and valve gap, is provided with built-in notes alicyclic in the stuffing box of valve gap, at the assembled, injects sealed fat earlier in annotating the fat intra-annular, and sealed fat realizes the secondary seal of valve rod. The self-sealing balance stop valve of the utility model can realize the self-sealing between the valve body and the valve cover, and the sealing is tighter when the pressure is higher; realize the sealing of valve rod and valve gap, seal structure is resistant erodeing and erodeing, prolongs the life of stop valve, just the utility model discloses a stop valve, simple structure easily assembles.
In order to solve the problems existing in the prior art, the method is realized by the following technical scheme:
the utility model provides a balanced stop valve of self sealss, includes valve body, valve gap, case sleeve, case, valve rod and disk seat, its characterized in that: the connecting structure between the valve body and the valve cover is a flange connecting structure, a sealing groove I is formed in the end face, connected with the valve cover, of the valve body, a sealing groove II is formed in the end face, connected with the valve body, of the valve cover, the position, corresponding to the sealing groove I, of the end face, connected with the valve body, of the valve cover, after the valve body and the valve cover are connected together, the sealing groove I and the sealing groove II form a sealing cavity, a self-sealing gasket is installed in the sealing cavity, the upper end of the self-sealing gasket is in contact with the groove; a packing gland is arranged on the valve cover, a packing box is arranged between the packing gland and the valve cover, and an alicyclic injection ring is arranged in the packing box; the stuffing box and the valve rod form a primary sealing structure, and the grease injection ring in the stuffing box is injected with sealing grease to form a secondary sealing structure with the valve rod.
The self-sealing gasket is a BX type self-sealing gasket.
The self-sealing gasket is an octagonal ring gasket.
The lower end of the valve rod is connected with the valve core, the lower end of the valve rod is provided with an inverted sealing structure, the inverted sealing structure comprises a sealing opening formed in the lower end of the valve cover and a boss arranged on the valve rod, the upper side face of the boss is an inverted conical face, and the inverted conical face is matched with the sealing opening formed in the lower end of the valve cover to form the inverted sealing structure.
The valve core and the valve core sleeve form a cage type structure, a balance hole is formed in the valve core, and the upper cavity and the lower cavity of the valve core sleeve divided by the valve core are communicated through the balance hole.
And the valve core is provided with a throttling cone.
And (3) overlaying the STL on the sealing surface of the valve core and the valve seat.
Compared with the prior art, the utility model discloses profitable technological effect who brings shows:
1. the utility model provides a structure of balanced stop valve of self sealss, its self sealss are by seal groove I offered on the terminal surface of valve body and valve gap connection, seal groove II and self sealss pad on the terminal surface that valve gap and valve body are connected form, the self sealss structure of this application, compare in the seal structure of the sealing washer among the prior art, can form self sealss structure, when pressure risees, the valve gap is sealed tighter with the valve body, realizes the self sealss. And among the prior art, because set up the sealing washer in the valve body, and do not set up seal groove I and seal groove II, make the medium continuously erode and erode the sealing washer, last this state for a long time, just cause the sealing washer inefficacy, produce the condition of medium leakage, the setting of this application seal groove I and seal groove II, when making the medium erode and erode, be the non-sealing face of sealed pad to, but not sealed face, it erodes and erodees and can not lead to the fact the influence to sealed face of sealed pad, even sealed face receives the erosion of certain degree, but the sealed pressure that can engage in the sealed face of adjustment according to medium pressure from sealed, realize the self sealss, can solve the problem that exists among the prior art well.
2. The utility model discloses a be provided with the packing box on the valve gap, form one side seal between packing box and the valve rod, be provided with in the packing box simultaneously and annotate the fat circle, at the assembled, inject sealed fat earlier in annotating the fat circle, sealed fat can realize the secondary seal of valve rod. The sealing between the valve rod and the valve cover is tighter, and the leakage phenomenon can not occur.
3. Further, the utility model discloses the design has the structure of falling seal on the valve rod, and when the valve rod lower extreme rose the valve gap upper seal mouth position department, the back taper face of valve rod lower extreme and the sealed pair realization of the department of sealing on the valve gap were fallen sealedly, also can prevent simultaneously that the valve rod from droing.
Drawings
FIG. 1 is a schematic sectional view of the stop valve of the present invention;
fig. 2 is an enlarged view of a portion of fig. 1 according to the present invention;
FIG. 3 is an enlarged view of a portion B of FIG. 1 according to the present invention;
fig. 4 is an enlarged view of a portion C of fig. 1 according to the present invention;
reference numerals: 1. the valve comprises a valve body, 2, a valve cover, 3, a valve core sleeve, 4, a valve core, 5, a valve rod, 6, a valve seat, 7, a sealing groove I, 8, a sealing groove II, 9, a sealing cavity, 10, a self-sealing pad, 11, a packing gland, 12, a packing box, 13, an injection ring, 14, a sealing port, 15, a boss, 16, an inverted conical surface, 17, a balance hole, 18 and a throttling cone.
Detailed Description
The technical solution of the present invention is further explained in detail with reference to the accompanying drawings 1-4 of the specification.
Example 1
As a preferred embodiment of the present invention, refer to description attached figure 1, this embodiment provides a self-sealing balance stop valve, including valve body 1, valve gap 2, case sleeve 3, case 4, valve rod 5 and disk seat 6, its characterized in that: the connecting structure between the valve body 1 and the valve cover 2 is a flange connecting structure, a sealing groove I7 is formed in the end face, connected with the valve cover 2, of the valve body 1, a sealing groove II 8 is formed in the end face, connected with the valve body 1, of the valve cover 2, the position, corresponding to the sealing groove I7, of the end face, connected with the valve body 1, of the valve body 1, after the valve body 1 and the valve cover 2 are connected together, the sealing groove I7 and the sealing groove II 8 form a sealing cavity 9, a self-sealing gasket 10 is installed in the sealing cavity 9, the upper end of the self-sealing gasket 10 is in contact with the groove wall; a packing gland 11 is arranged on the valve cover 2, a packing box 12 is arranged between the packing gland 11 and the valve cover 2, and an alicyclic injection ring 13 is arranged in the packing box 12; the stuffing box 12 and the valve rod 5 form a primary sealing structure, and sealing grease is injected into a grease injection ring 13 in the stuffing box 12 to form a secondary sealing structure with the valve rod 5. Referring to the attached drawing 2 of the specification, the arrangement of the sealing groove I7 and the sealing groove II 8 enables a medium to be flushed and eroded when the medium is not flushed and eroded, the non-sealing surface of the sealing gasket is aimed at, but not when the medium is eroded and eroded, the flushing and the erosion cannot affect the sealing surface of the sealing gasket, even if the sealing surface is eroded to a certain degree, the self-sealing gasket 10 can adjust the pressure of the sealing surface according to the pressure of the medium, self-sealing is achieved, and the problem existing in the prior art can be well solved.
Example 2
As another preferred embodiment of the present invention, referring to fig. 1-4 of the specification, the present embodiment discloses a self-sealing balance stop valve, which comprises a valve body 1, a valve cover 2, a valve core sleeve 3, a valve core 4, a valve rod 5 and a valve seat 6, and is characterized in that: the connecting structure between the valve body 1 and the valve cover 2 is a flange connecting structure, as shown in fig. 2, a sealing groove I7 is formed in the end face, connected with the valve cover 2, of the valve body 1, a sealing groove II 8 is formed in the end face, connected with the valve body 1, of the valve cover 2, the position, corresponding to the sealing groove I7, of the end face, connected with the valve body 1, of the valve body 1, after the valve body 1 and the valve cover 2 are connected together, the sealing groove I7 and the sealing groove II 8 form a sealing cavity 9, a self-sealing gasket 10 is installed in the sealing cavity 9, the upper end of the self-sealing gasket 10 is in contact with the; a packing gland 11 is arranged on the valve cover 2, as shown in fig. 3, a packing box 12 is arranged between the packing gland 11 and the valve cover 2, and an alicyclic injection ring 13 is arranged in the packing box 12; the stuffing box 12 and the valve rod 5 form a primary sealing structure, and sealing grease is injected into a grease injection ring 13 in the stuffing box 12 to form a secondary sealing structure with the valve rod 5. The self-sealing gasket 10 is a BX type self-sealing gasket 10. The self-sealing gasket 10 is an octagonal ring gasket.
As shown in fig. 4, the lower end of the valve rod 5 is connected with the valve core 4, the lower end of the valve rod 5 is provided with an inverted sealing structure, the inverted sealing structure comprises a sealing opening 14 formed at the lower end of the valve cover 2 and a boss 15 arranged on the valve rod 5, the upper side surface of the boss 15 is an inverted conical surface 16, and the inverted conical surface 16 is matched with the sealing opening 14 formed at the lower end of the valve cover 2 to form the inverted sealing structure.
Example 3
As another preferred embodiment of the present application, referring to fig. 1-4 of the specification, the present embodiment discloses:
the utility model provides a balanced stop valve of self sealss, includes valve body 1, valve gap 2, case sleeve 3, case 4, valve rod 5 and disk seat 6, its characterized in that: the connecting structure between the valve body 1 and the valve cover 2 is a flange connecting structure, a sealing groove I7 is formed in the end face, connected with the valve cover 2, of the valve body 1, a sealing groove II 8 is formed in the end face, connected with the valve body 1, of the valve cover 2, the position, corresponding to the sealing groove I7, of the end face, connected with the valve body 1, of the valve body 1, after the valve body 1 and the valve cover 2 are connected together, the sealing groove I7 and the sealing groove II 8 form a sealing cavity 9, a self-sealing gasket 10 is installed in the sealing cavity 9, the upper end of the self-sealing gasket 10 is in contact with the groove wall; a packing gland 11 is arranged on the valve cover 2, a packing box 12 is arranged between the packing gland 11 and the valve cover 2, and an alicyclic injection ring 13 is arranged in the packing box 12; the stuffing box 12 and the valve rod 5 form a primary sealing structure, and sealing grease is injected into a grease injection ring 13 in the stuffing box 12 to form a secondary sealing structure with the valve rod 5. The self-sealing gasket 10 is a BX type self-sealing gasket 10. Alternatively, the self-sealing gasket 10 is an octagonal ring gasket.
The lower end of the valve rod 5 is connected with the valve core 4, the lower end of the valve rod 5 is provided with an inverted sealing structure, the inverted sealing structure comprises a sealing opening 14 formed at the lower end of the valve cover 2 and a boss 15 arranged on the valve rod 5, the upper side face of the boss 15 is an inverted conical surface 16, and the inverted conical surface 16 is matched with the sealing opening 14 formed at the lower end of the valve cover 2 to form the inverted sealing structure. The valve core 4 and the valve core sleeve 3 form a cage type structure, a balance hole 17 is formed in the valve core 4, and the upper cavity and the lower cavity of the valve core 4 divided by the valve core sleeve 3 are communicated through the balance hole 17. The valve core 4 is provided with a throttling cone 18. And the seal surface of the valve core 4 and the valve seat 6 is welded with STL.
Claims (7)
1. The utility model provides a balanced stop valve of self sealss, includes valve body (1), valve gap (2), case sleeve (3), case (4), valve rod (5) and disk seat (6), its characterized in that: the connecting structure between the valve body (1) and the valve cover (2) is a flange connecting structure, a sealing groove I (7) is formed in the end face, connected with the valve cover (2), of the valve body (1), a sealing groove II (8) is formed in the end face, connected with the valve body (1), of the valve cover (2) and corresponds to the position of the sealing groove I (7), after the valve body (1) and the valve cover (2) are connected together, the sealing groove I (7) and the sealing groove II (8) form a sealing cavity (9), a self-sealing gasket (10) is installed in the sealing cavity (9), the upper end of the self-sealing gasket (10) is in contact with the groove wall of the sealing groove II (8), and the lower end of the self-sealing gasket (10) is in contact with the; a packing gland (11) is arranged on the valve cover (2), a packing box (12) is arranged between the packing gland (11) and the valve cover (2), and an oil injection ring (13) is arranged in the packing box (12); the stuffing box (12) and the valve rod (5) form a primary sealing structure, the alicyclic injection ring (13) in the stuffing box (12) is injected with sealing grease, and a secondary sealing structure is formed with the valve rod (5).
2. The self-sealing balanced shut-off valve of claim 1, wherein: the self-sealing gasket (10) is a BX type self-sealing gasket (10).
3. The self-sealing balanced shut-off valve of claim 1, wherein: the self-sealing gasket (10) is an octagonal ring gasket.
4. The self-sealing balanced shut-off valve of claim 1, wherein: the lower end of the valve rod (5) is connected with the valve core (4), the lower end of the valve rod (5) is provided with an inverted sealing structure, the inverted sealing structure comprises a sealing opening (14) formed in the lower end of the valve cover (2) and a boss (15) arranged on the valve rod (5), the upper side face of the boss (15) is an inverted cone face (16), and the inverted cone face (16) is matched with the sealing opening (14) formed in the lower end of the valve cover (2) to form the inverted sealing structure.
5. The self-sealing balanced shut-off valve of claim 1, wherein: the valve core (4) and the valve core sleeve (3) form a cage type structure, a balance hole (17) is formed in the valve core (4), and the upper cavity and the lower cavity of the valve core sleeve (3) are communicated with the valve core (4) through the balance hole (17).
6. The self-sealing balanced shut-off valve of claim 1, wherein: and a throttling cone (18) is arranged on the valve core (4).
7. The self-sealing balanced shut-off valve of claim 1, wherein: and the STL is welded on the sealing surface of the valve core (4) and the valve seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082825.7U CN210218697U (en) | 2019-07-11 | 2019-07-11 | Self-sealing balance stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082825.7U CN210218697U (en) | 2019-07-11 | 2019-07-11 | Self-sealing balance stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218697U true CN210218697U (en) | 2020-03-31 |
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ID=69937075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921082825.7U Active CN210218697U (en) | 2019-07-11 | 2019-07-11 | Self-sealing balance stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210218697U (en) |
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2019
- 2019-07-11 CN CN201921082825.7U patent/CN210218697U/en active Active
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