CN203363235U - Padding-free gate valve - Google Patents
Padding-free gate valve Download PDFInfo
- Publication number
- CN203363235U CN203363235U CN 201320250957 CN201320250957U CN203363235U CN 203363235 U CN203363235 U CN 203363235U CN 201320250957 CN201320250957 CN 201320250957 CN 201320250957 U CN201320250957 U CN 201320250957U CN 203363235 U CN203363235 U CN 203363235U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- hypomere
- padding
- gate valve
- 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 main structure of a padding-free gate valve comprises a locking nut, a hand wheel, a valve rod, a permanent magnet thrust spring, a gland, a valve cover, a valve shell and a middle valve rod base. The padding-free gate valve is matched with a valve base sealing pair structure of a parallel type friction-free gate valve in the prior art, and is characterized in that the valve rod is composed of three short valve rods which are independent, are mutually connected and rotate from top to bottom, and a sealing piece is fixed to the lower section of the upper valve rod. Non-metal soft padding in the prior art is replaced, the problems that the soft padding is not durable and is not universal at high temperature and low temperate are resolved, the abrasion amount of a valve rod sealing pair can be accurately measured from the outside of the valve shell, and therefore the padding-free gate valve is perfect and practical.
Description
Technical field
Valve rod of the present utility model is without filling-material structure, relate to and be applicable to all types of industries gate valve, substituting the nonmetal soft packing of valve rod of prior art with valve rod cemented carbide sealing pair, its durable wear simple in structure, function with auto-compensation wear extent, extend maintenance spreadable life decades of times; Without the special long-neck valve gap of making the low temperature valve special use, realize that the high low temperature of short neck valve gap is general, and can be outside valve casing the wear extent of Measurement accuracy valve stem seal pair, belong to design and the manufacturing technology field of industrial valve.
Background technique
All kinds of gate valve of the prior art, no matter be various wedge-types and parallel type gate plate type gate valve, its valve stem seal is all to use nonmetal soft packing, in use, exist and repeatedly wear and tear, compress, harden and follow the string, the problem of water clock occurs, need the time-consuming stopping production of manpower little by little filler to be dug out from the stuffing box of narrow annular deep hole with billhook, sometimes also can because of pressure gauge can not the accurate response pipeline or container in pressure medium, the security incident that medium is hurted sb.'s feelings occurs when having dug soon; Low temperature valve particularly, in order to prevent that filler from freezing, also to make according to the different temperatures grade long-neck valve gap of different length, and be wound around cold insulation material in the long-neck periphery of valve gap, these are all unsolved maintenance and protection question always for many years, therefore are necessary the The prior art is improved.
Summary of the invention
The valve rod soft packing that the purpose of this utility model is to overcome all kinds of gate valves of the prior art water clock that easily hardens, the maintain and replace difficulty; Filler easily freezes and scratches valve rod on the low temperature valve rod, causes the problem of serious leakage, and the gate valve of a kind of valve rod without the soft packing structure is provided, and valve rod is comprised of three of upper, middle and lower independence and the short valve rod that interconnects rotation; On the end face of upper valve rod hypomere fixing seal sheet below being adjacent in gland, substitute and solve the valve rod soft packing and be not durable, can not the general problem of high low temperature.
The utility model completes by following technical proposal: a kind of without the filler gate valve, its main structure comprises locking nut, handwheel, valve rod, permanent magnetism thrust spring, gland, valve gap, middle valve rod base, the major-minor flashboard of valve casing and prior art, it is characterized in that valve rod is comprised of three independences of upper, middle and lower and the short valve rod that interconnects rotation, on the end face of upper valve rod hypomere fixing seal sheet below being adjacent in gland, during the square toes of described upper valve rod hypomere insert in the square hole of valve rod epimere, gland top with below handwheel between the permanent magnetism thrust spring of the relative installation of a pair of same polarity is set, the interior square hole of described middle valve rod epimere is connected with the square toes of upper valve rod hypomere, and stage casing is interior slotted hole, and hypomere is nut, and the outer cone headstock of lower end drops on described middle valve rod base, and middle valve rod base is clamped by the flange plate of described valve gap and valve casing, the square toes of described lower valve rod lower end are connected with the main gate-board of prior art, and screw portion is connected with the nut of middle valve rod hypomere.
The function of the auto-compensation wear extent of upper valve rod cemented carbide sealing pair: on the end face of the fixing diaphragm seal of upper valve rod hypomere below being adjacent in gland, its specific pressure is directly proportional to pressure medium in valve casing, three valve rods of upper, middle and lower are three parts independently, interconnect rotation, but do not affect lifting separately; Key pin and handwheel connection of rotating are equipped with in upper valve rod top, and handwheel can slide up and down at the cylindrical of upper valve rod, and the locking nut by the upper valve rod top flattens handwheel on permanent magnetism thrust spring; The permanent magnetism thrust spring that two same polarities between gland and handwheel are installed relatively has two effects, the one, on the end face of the diaphragm seal that on repulsive force, the top handwheel drives the upper valve rod hypomere below being adjacent to all the time in gland, this uses wearing and tearing a bit to sealing pair, permanent magnetism thrust spring upwards pushes up a bit automatically, completes the automatic compensation function of the secondary wear extent of upper stem seal; Two is that the same pole-face of two permanent magnetism thrust springs there will be space in the process of upper top, measures space and just can accurately know the abrasion condition of upper stem seal pair.
Upper valve rod cemented carbide sealing pair substitutes the nonmetal soft packing of prior art, can, in subzero more than 200 ℃ of uses, without the special long-neck valve gap of making the low temperature valve special use, realize that the high low temperature of short neck valve gap is general.
The working procedure of novel packlesas valve bar: upper valve rod is connected with handwheel with locking nut by key pin, during the square toes of hypomere insert in the square hole of valve rod epimere; The nut of middle valve rod hypomere is connected with the screw portion of lower valve rod, the outer cone headstock that protrude its lower end drops on middle valve rod base, middle valve rod base is clamped by the flange plate of valve gap and valve casing, and effect is to prevent that the nut of middle valve rod hypomere from coordinating generation while rotating to move up and down with the screw rod of lower valve rod; The square toes of lower valve rod lower end are connected with the main gate-board of prior art zero friction gate valve; Start to take turns when counterclockwise rotation, three valve rods of upper, middle and lower are rotated together, the screw rod of lower valve rod rises to the slotted hole position in middle valve rod stage casing, and the major-minor flashboard be connected with lower valve rod lower end square toes rises thereupon, completes the unlatching without the filler gate valve, otherwise for closing.The utility model compared with prior art, there is following advantages and effect: adopt such scheme, this novel agent structure and operation using method that does not change existing all kinds of gate valves, substitute the nonmetal soft packing of prior art with the sealing pair of valve rod cemented carbide, it is simple in structure, durable wear, and there is the function of auto-compensation wear extent, extend maintenance spreadable life decades of times; Without the special long-neck valve gap of making the low temperature valve special use, realize that the high low temperature of short neck valve gap is general; And can be outside valve casing the wear extent of Measurement accuracy valve stem seal pair; Supporting with zero friction gate valve of prior art, be a relatively more perfect practical handy Novel Brake Valve in fact.
the accompanying drawing explanation
Accompanying drawing 1 is that upper, middle and lower valve rod of the present utility model is connected with the major-minor flashboard of prior art zero friction Parallel gate valve Parallel slide valve, in the structural representation of closed condition.
embodiment
Below in conjunction with 1 pair of the utility model of accompanying drawing, be described further.
The function of the auto-compensation wear extent of upper valve rod 5 cemented carbide sealing pairs as shown in Figure 1: the diaphragm seal 7 of upper valve rod 5 hypomeres is adjacent on the end face below gland 6 is interior, three valve rods of upper, middle and lower 5,10,13 are three independently parts, interconnect rotation, but do not affect the lifting of lower valve rod; Key pin 3 and handwheel 2 connection of rotatings are equipped with in upper valve rod 5 tops, handwheel 2 can slide up and down at the cylindrical of upper valve rod 5, locking nut 1 by upper valve rod 5 tops flattens handwheel 2 on permanent magnetic spring 4, the permanent magnetic spring 4 that two same polarities between gland 6 and handwheel 2 are installed relatively has two effects, the one, the diaphragm seal 7 that on repulsive force, top handwheel 2 drives upper valve rod 5 hypomeres is adjacent on the end face below gland 6 is interior all the time, this to the sealing pair wearing and tearing a bit, permanent magnetism thrust spring 4 upwards pushes up a bit automatically, completes the automatic compensation function of upper valve rod 5 sealing pair wear extenies; Two is that the same pole-face of two permanent magnetism thrust springs 4 there will be space in the process of upper top, measures space and just can accurately know the abrasion condition of upper valve rod 5 sealing pairs.
The cemented carbide sealing pair 7 of upper valve rod 5 and 6 substitutes the nonmetal soft packing of prior art, can, in subzero more than 200 ℃ of uses, without the special long-neck valve gap of making the low temperature valve special use, realize that the high low temperature of short neck valve gap 9 is general.The working procedure of packlesas valve bar: upper valve rod 5 is connected with handwheel 2 with locking nut 1 by key pin 3, during the square toes 8 of hypomere insert in the square hole of valve rod 10 epimeres, the nut of middle valve rod 10 hypomeres is connected with the screw rod of lower valve rod 13, the outer conehead 11 that protrude middle valve rod 10 lower ends is located on middle valve rod base 12, middle valve rod base 12 is clamped by the flange plate of short neck valve gap 9 and valve casing 15, and its effect is to prevent that the nut of middle valve rod 10 hypomeres from coordinating generation while rotating to move up and down with the screw rod of lower valve rod 13; The square toes of lower valve rod 13 lower ends are connected with the main gate-board 16 of prior art zero friction Parallel gate valve Parallel slide valve, when counterclockwise rotation starts to take turns 2, three valve rods of upper, middle and lower 5,10,13 that connect together are rotated together, the screw rod of lower valve rod 13 rises to the position of the slotted hole 14 in middle valve rod 10 stage casings, the major-minor flashboard 16,17 be connected with lower valve rod 13 lower end square toes rises thereupon, complete the unlatching without the filler gate valve, otherwise close.
Claims (2)
1. one kind without the filler gate valve, main structure comprises locking nut, handwheel, valve rod, permanent magnetism thrust spring, gland, valve gap, valve casing, middle valve rod base etc., it is characterized in that described valve rod is comprised of three independences of upper, middle and lower and the short valve rod that interconnects rotation, on the end face of the fixing diaphragm seal of upper valve rod hypomere below being adjacent in gland.
2. according to claim 1 without the filler gate valve, during the square toes that it is characterized in that described upper valve rod hypomere insert in the square hole of valve rod epimere, the gland top with below handwheel between the permanent magnetism thrust spring of the relative installation of a pair of same polarity is set.
3. according to claim 1 without the filler gate valve, the epimere that it is characterized in that described middle valve rod is that interior square hole is connected with the square toes of upper valve rod hypomere, and stage casing is interior slotted hole, and hypomere is nut, the outer cone headstock of lower end drops on middle valve rod base, and middle valve rod base is clamped by the flange plate of valve gap and valve casing.
4. according to claim 1 without the filler gate valve, it is characterized in that the lower end square toes of described lower valve rod are connected with the main gate-board of prior art zero friction Parallel gate valve Parallel slide valve, screw portion is connected with the nut of middle valve rod hypomere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320250957 CN203363235U (en) | 2013-05-10 | 2013-05-10 | Padding-free gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320250957 CN203363235U (en) | 2013-05-10 | 2013-05-10 | Padding-free gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203363235U true CN203363235U (en) | 2013-12-25 |
Family
ID=49810999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320250957 Expired - Fee Related CN203363235U (en) | 2013-05-10 | 2013-05-10 | Padding-free gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203363235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422884A (en) * | 2016-01-06 | 2016-03-23 | 江苏安普阀门机械有限公司 | High ultra-vacuum special electric gate valve |
-
2013
- 2013-05-10 CN CN 201320250957 patent/CN203363235U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422884A (en) * | 2016-01-06 | 2016-03-23 | 江苏安普阀门机械有限公司 | High ultra-vacuum special electric gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20150510 |
|
| EXPY | Termination of patent right or utility model |