CN2699068Y - Balanced type cut-off valve - Google Patents
Balanced type cut-off valve Download PDFInfo
- Publication number
- CN2699068Y CN2699068Y CN 200420026823 CN200420026823U CN2699068Y CN 2699068 Y CN2699068 Y CN 2699068Y CN 200420026823 CN200420026823 CN 200420026823 CN 200420026823 U CN200420026823 U CN 200420026823U CN 2699068 Y CN2699068 Y CN 2699068Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- axle sleeve
- valve body
- body cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a balanced type cut-off valve which comprises a valve body and a valve rod, wherein a thread sleeve is arranged in the valve body, and the valve rod is axially matched with the valve body in a sliding way through the thread sleeve; a valve seat, a valve core and an inner cavity of the valve body are arranged on the valve body; the inner cavity of the valve body and the valve seat are arranged on the same shaft line, a valve core which is matched with the inner cavity of the valve body in an air-tight way is movably arranged in the inner cavity of the valve body, and a pressure balancing hole which causes the inner cavity of the valve body and the inner cavity of the valve seat to be communicated is arranged on the end surface of the valve core. The utility model has the advantages that because the valve core is respectively arranged on the inner cavity of the valve body and the valve seat with equal diameter, and the pressure balancing hole which is used for balancing the pressure of a medium is arranged on the valve core, the valve core can not bear unidirectional medium pressure when the valve core is opened or closed; in addition, because the valve rod and the transmission part of the shaft of the valve core are arranged in the space which is separated from the medium, the utility model can not be influenced by flow resistance; thus, the utility model has the advantages of small opening and closing force moment and flexible and convenient operation, and is especially suitable for cut-off valves with large hole diameters.
Description
Technical field
Relate to a kind of valve in model utility, relate in particular to a kind of balanced type stop valve.
Background technique
At present, stop valve is a kind of in the cut-off valve, because of it has simple in structure, the advantage that cost is low and being widely used in the keying of various industries to flowing medium, the stop valve of prior art has straight-through type, right-angle type, structural types such as direct current type, but include valve body, valve rod, flap, the valve rod rotation drives the flap moving linearly, directly the medium that flows is blocked or opens, in this process, all be subjected to bigger flow resistance, thereby exist keying moment big, open and close hard shortcoming, the stop valve of especially big latus rectum, open and close difficulty more, directly influenced its using scope.
Summary of the invention:
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art exactly, and a kind of balanced type stop valve that moment is little, use light and flexible that opens and closes is provided.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: the balanced type stop valve, comprise valve body, valve rod, be provided with swivel nut in the valve body, valve rod is in axial sliding with valve body by swivel nut and cooperates, valve body is provided with valve seat and spool, valve body is provided with body cavity, body cavity and valve seat are arranged on the same axis, be provided with the spool of air-tight fit in body cavity versatilely, the end face of spool is provided with the pressure compensation opening of the intracavity inter-connection that makes body cavity and valve seat.
Body cavity and valve seat are cylindric and big or small as one man being arranged on the same axis.
The beneficial effects of the utility model are: because spool is located on the isometrical body cavity and valve seat, and spool is provided with the pressure compensation opening of balance media pressure, make spool when opening and closing, can not be subjected to unidirectional pressure medium, in addition, valve rod and poppet shaft drive part are arranged in the space that separates with medium, are not subjected to the influence of flow resistance, thereby the utlity model has that to open and close moment little, the advantage of flexible and convenient operation is particularly useful on the stop valve of big latus rectum.
Description of drawings:
Fig. 1: structure sectional view of the present utility model;
The A-A sectional view of Fig. 2: Fig. 1.
Embodiment:
Below in conjunction with the drawings and specific embodiments the utility model is further described:
As shown in the figure, the balanced type stop valve, comprise valve body 1, valve rod 12, be provided with swivel nut 14 in the valve body 1, valve rod 12 is in axial sliding with valve body 1 by swivel nut 14 and cooperates, valve body 1 is provided with valve seat 2 and spool 4, valve body 1 is provided with body cavity 17, body cavity 17 is cylindric and big or small as one man being arranged on the same axis with valve seat 2, in body cavity 17, be provided with the spool 4 of air-tight fit versatilely, spool 4 is provided with seal ring 5 and makes air-tight fit with body cavity 17, and the end face of spool 4 is provided with the pressure compensation opening 16 of the intracavity inter-connection that makes body cavity 17 and valve seat 2.
In the direct current channel 18 of valve body 1, be provided with central diaphragm 19, on central diaphragm 19, offer the groove 21 of the direct current channel 18 that connects valve body 1, on central diaphragm 19, also be provided with body cavity 17, body cavity 17 and valve rod 12 basic vertical settings, spool 4 axially on be installed with a poppet shaft 10, poppet shaft 10 is set on the sealing axle sleeve assembly 20 versatilely, the two ends that sealing axle sleeve assembly 20 cooperates with poppet shaft 10 are provided with seal arrangement 6,7, sealing axle sleeve assembly 20 is installed on the central diaphragm 19 and is sealed and matched, poppet shaft 10 is in seal arrangement 6, one section between 7 is set to semiaxis, semiaxis is provided with helical teeth, valve rod 12 runs through sealing axle sleeve assembly 20 and also be semiaxis on corresponding axle, and the semiaxis helical teeth that is provided with on helical teeth and the poppet shaft 10 is complementary, and promptly valve rod 12 drives poppet shaft 10 by helical teeth and slides vertically.
Described sealing axle sleeve assembly 20 comprises axle sleeve 8 and pieces together jack panel 11, the outer circumferential face of axle sleeve 8 is provided with shoulder lattice 27 makes axle sleeve 8 be located by connecting at axial and central diaphragm 19, the fitting surface of the outer circumferential face of axle sleeve 8 and central diaphragm 19 is provided with left seal ring 28 and right seal ring 29, valve rod 12 connects the part of axle sleeve 8 between left seal ring 28 and right sealing 29, and assembly jack panel 11 is arranged on the other end of axle sleeve 8 relative shoulder lattice 27.
Described spool 4 split settings comprise valve core housing 22, valve core head 23, and valve core head 23 does with valve core housing 22 that step is sheathed to be cooperated, and fixing by screw 25 with fixed plate 24, are provided with seal ring 26 in the groove of valve core head 23 and the connecting part of valve core housing 22.
Claims (6)
1, the balanced type stop valve, comprise valve body (1), valve rod (12), be provided with swivel nut (14) in the valve body (1), valve rod (12) is in axial sliding with valve body (1) by swivel nut (14) and cooperates, valve body (1) is provided with valve seat (2) and spool (4), it is characterized in that, valve body (1) is provided with body cavity (17), body cavity (17) is arranged on the same axis with valve seat (2), be provided with the spool (4) of air-tight fit in body cavity (17) versatilely, the end face of spool (4) is provided with the pressure compensation opening (16) of the intracavity inter-connection that makes body cavity (17) and valve seat (2).
2, balanced type stop valve according to claim 1 is characterized in that: body cavity (17) is cylindric and big or small as one man being arranged on the same axis with valve seat (2).
3, balanced type stop valve according to claim 1 and 2, it is characterized in that: in the direct current channel (18) of valve body (1), be provided with central diaphragm (19), on central diaphragm (19), offer the groove (21) of the direct current channel (18) that connects valve body (1), on central diaphragm (19), also be provided with body cavity (17), body cavity (17) and the basic vertical setting of valve rod (12), spool (4) axially on be installed with a poppet shaft (10), poppet shaft (10) is set on the sealing axle sleeve assembly (20) versatilely, sealing axle sleeve assembly (20) is provided with seal arrangement (6 with the two ends that poppet shaft (10) cooperates, 7), sealing axle sleeve assembly (20) is installed on the central diaphragm (19) and is sealed and matched, poppet shaft (10) is in seal arrangement (6,7) one section between is set to semiaxis, semiaxis is provided with helical teeth, valve rod (12) runs through sealing axle sleeve assembly (20) and also be semiaxis on corresponding axle, and the semiaxis helical teeth that is provided with on helical teeth and the poppet shaft (10) is complementary, and promptly valve rod (12) drives poppet shaft (10) by helical teeth and slides vertically.
4, balanced type stop valve according to claim 3, it is characterized in that: described sealing axle sleeve assembly (20) comprises axle sleeve (8) and pieces together jack panel (11), the outer circumferential face of axle sleeve (8) is provided with shoulder lattice (27) makes axle sleeve (8) be located by connecting at axial and central diaphragm (19), the fitting surface of the outer circumferential face of axle sleeve (8) and central diaphragm (19) is provided with left seal ring (28) and right seal ring (29), the part that valve rod (12) connects axle sleeve (8) is positioned between left seal ring (28) and the right sealing (29), and assembly jack panel (11) is arranged on axle sleeve (8) and takes on relatively on the other end of lattice (27).
5, balanced type stop valve according to claim 1 and 2, it is characterized in that: described spool (4) split setting, comprise valve core housing (22), valve core head (23), valve core head (23) does with valve core housing (22) that step is sheathed to be cooperated, and fixing with fixed plate (24) by screw (25), in the groove of valve core head (23) and the connecting part of valve core housing (22), be provided with seal ring (26).
6, balanced type stop valve according to claim 4, it is characterized in that: described spool (4) split setting, comprise valve core housing (22), valve core head (23), valve core head (23) does with valve core housing (22) that step is sheathed to be cooperated, and fixing with fixed plate (24) by screw (25), in the groove of valve core head (23) and the connecting part of valve core housing (22), be provided with seal ring (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026823 CN2699068Y (en) | 2004-04-29 | 2004-04-29 | Balanced type cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026823 CN2699068Y (en) | 2004-04-29 | 2004-04-29 | Balanced type cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2699068Y true CN2699068Y (en) | 2005-05-11 |
Family
ID=34771414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420026823 Expired - Fee Related CN2699068Y (en) | 2004-04-29 | 2004-04-29 | Balanced type cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2699068Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102764A (en) * | 2011-03-12 | 2011-06-22 | 安徽铜都阀门股份有限公司 | Through type rapid cut-off valve |
| CN109058556A (en) * | 2018-09-30 | 2018-12-21 | 浙江理工大学 | Plug valve |
-
2004
- 2004-04-29 CN CN 200420026823 patent/CN2699068Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102764A (en) * | 2011-03-12 | 2011-06-22 | 安徽铜都阀门股份有限公司 | Through type rapid cut-off valve |
| CN109058556A (en) * | 2018-09-30 | 2018-12-21 | 浙江理工大学 | Plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |