CN201787111U - Non-return gate valve - Google Patents
Non-return gate valve Download PDFInfo
- Publication number
- CN201787111U CN201787111U CN201020538306XU CN201020538306U CN201787111U CN 201787111 U CN201787111 U CN 201787111U CN 201020538306X U CN201020538306X U CN 201020538306XU CN 201020538306 U CN201020538306 U CN 201020538306U CN 201787111 U CN201787111 U CN 201787111U
- Authority
- CN
- China
- Prior art keywords
- valve
- return
- runner
- valve body
- seat
- 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
Links
Images
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a non-return gate valve, comprising a valve body, a flashboard, a valve stem, a valve cover, and a valve stem elevating drive mechanism, a flow channel is disposed in the valve body, the flow channel is provided with openings at the two sides of the valve body, and the valve body corresponding to the flow channel is provided with a valve seat, the flashboard can elevate and movebly disposed in the valve seat, and the upper end of the flashboard and the valve stem are in a fixed and cooperative coupling, the flow channel of any end opening of the valve body is provided with a non-return mechanism. The non-return gate valve in the utility model is advantaged by low cost and high economic benefit.
Description
Technical field
The utility model relates to a kind of gate valve, is meant a kind of non-return gate valve with check function especially.
Background technique
At long-distance transport pipes (no matter be water delivery, gas transmission, oil transportation) in the transportation process, all need pressurizing point, and the pump house of pressurizing point generally all needs the gate valve back that safety check is installed, operating method in the production is at first to close compression pump, after having closed compression pump, because safety check and then closing gate valve are closed in the backflow effect of fed sheet of a media automatically.Form because this system is gate valve and safety check two deck valve doors, many sealing surfaces during as if unbalance stress, be easy to generate leakage, and structure length are long after the two deck valve door additions, Heavy Weight, purchase cost height by bolton between two deck valve doors.In addition, existing pump house generally adopts Swing check valve as safety check, because Swing check valve is closed by the weight of flap self and the pressure of medium back flow when medium back flow, can produce impact force, two sealing surfaces are collided, damage sealing surface easily, shorten the working life of valve.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and the non-return gate valve that has check function that a kind of cost is low, economic benefit is high is provided.
For achieving the above object, the technical solution of the utility model is to include valve body, flashboard, valve rod, valve gap and valve rod lift drive mechanism, be provided with runner in the described valve body, described runner is at the both-side opening of valve body, and described valve body is provided with valve seat with respect to runner, described flashboard lifting is arranged in the valve seat versatilely, and the upper end of this flashboard is fixedly connected with valve rod and cooperates, and is provided with non-return mechanism in the runner of the arbitrary end opening of described valve body.
Further being provided with is that described non-return mechanism includes the non-return flap, be set with seal valve seat on the inwall of described runner with respect to non-return flap inboard, one end of the relative seal valve seat of described non-return flap is provided with the sealing frustum that is sealed and matched with seal valve seat, the back side of sealing frustum is connected with transmission shaft, be set with the positioning seat that cooperates to transmission with transmission shafts on the outside inwall of the relative non-return flap of described runner, this positioning seat is provided with medium through hole, is provided with coil tension spring between the back side of described positioning seat and sealing frustum.
Further being provided with is that described valve rod lift drive mechanism includes Stem Mut and the handwheel that is linked with valve rod.
Further being provided with is that the arranged outside with respect to valve rod has packing cavity in the described valve gap, is provided with stuffing box packing in this packing cavity.
Advantage of the present utility model: the check function of non-return mechanism is incorporated on the gate valve, save pump house and also need establish the safety check cost in addition, reduced the cost of production that cost of production and purchase cost have also reduced simultaneously applying unit greatly, it is all considerable that the utility model can be applied to its economic benefit of place and market prospects that all needed gate valves of pump house and safety check match.
In addition, non-return flap rear portion is increased spring, played the effect of fine protection Boilor check valve seat; prolonged working life, pressure is big more, and sealability is good more; when even reflux medium pressure is very low, because the elastic reaction of spring plays good non-return seal action equally.
And the place that needed gate valve of all pump houses and safety check match can be replaced by it, and its economic benefit and market prospects are all considerable.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 the utility model embodiment structural representation.
Embodiment
Embodiment of the present utility model as shown in Figure 1, include valve body 1, flashboard 2, valve rod 3, valve gap 4 and valve rod lift drive mechanism 5, the described valve rod lift drive mechanism 5 of present embodiment preferably by the following technical solutions, include the Stem Mut 51, the handwheel 52 that are linked with valve rod 3, certainly also need to be provided with miscellaneous part and make 3 liftings of handwheel 52 rotating band ovable valve stems, this valve rod lift drive mechanism 5 of present embodiment also includes nut gland 53, support 54, upper limit nut 55.Be provided with runner 11 in the described valve body 1 of present embodiment, described runner 11 is at the both-side opening of valve body, and described valve body 1 is provided with valve seat 12 with respect to runner 11, described flashboard 2 liftings are arranged in the valve seat 12 versatilely, and the upper end of this flashboard 2 is fixedly connected with valve rod 3 and cooperates, be provided with non-return mechanism 6 in the runner of described valve body 1 arbitrary end opening, the selection of this arbitrary end opening of present embodiment can be any.
The described non-return mechanism 6 of present embodiment includes non-return flap 61, be set with seal valve seat 62 on the inwall of described runner 11 with respect to non-return flap 61 inboards, the sealing valve seat specifically can adopt seal ring 62, one end of described non-return flap 61 relative seal valve seats 62 is provided with the sealing frustum 611 that is sealed and matched with seal valve seat 62, the back side of sealing frustum 611 is connected with transmission shaft 612, be set with the positioning seat 63 that cooperates with transmission shaft 612 axial transmissions on the outside inwall of described runner 11 relative non-return flaps 61, this positioning seat 63 is provided with medium through hole 631, is provided with coil tension spring 64 between the back side of described positioning seat 63 and sealing frustum 611.
In addition, present embodiment is that the arranged outside with respect to valve rod 3 has packing cavity 41 in the described valve gap 4, be provided with stuffing box packing 42 in this packing cavity 41, certain present embodiment also needs to be provided with other component makes stuffing box packing 42 sealing and fixing in packing cavity 41, such as, the filler gland 44 and the hold-down grid 45 that are arranged at the Packing seat 43 of packing cavity 41 bottoms and are arranged on packing cavity 41 tops.
Claims (4)
1. non-return gate valve, include valve body, flashboard, valve rod, valve gap and valve rod lift drive mechanism, be provided with runner in the described valve body, described runner is at the both-side opening of valve body, and described valve body is provided with valve seat with respect to runner, described flashboard lifting is arranged in the valve seat versatilely, and the upper end of this flashboard is fixedly connected with valve rod and cooperates, and it is characterized in that: be provided with non-return mechanism in the runner of the arbitrary end opening of described valve body.
2. a kind of non-return gate valve according to claim 1, it is characterized in that: described non-return mechanism includes the non-return flap, be set with seal valve seat on the inwall of described runner with respect to non-return flap inboard, one end of the relative seal valve seat of described non-return flap is provided with the sealing frustum that is sealed and matched with seal valve seat, the back side of sealing frustum is connected with transmission shaft, be set with the positioning seat that cooperates to transmission with transmission shafts on the outside inwall of the relative non-return flap of described runner, this positioning seat is provided with medium through hole, is provided with coil tension spring between the back side of described positioning seat and sealing frustum.
3. a kind of non-return gate valve according to claim 1 and 2 is characterized in that: described valve rod lift drive mechanism includes Stem Mut and the handwheel that is linked with valve rod.
4. a kind of non-return gate valve according to claim 3 is characterized in that: the arranged outside with respect to valve rod in the described valve gap has packing cavity, is provided with stuffing box packing in this packing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020538306XU CN201787111U (en) | 2010-09-21 | 2010-09-21 | Non-return gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020538306XU CN201787111U (en) | 2010-09-21 | 2010-09-21 | Non-return gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787111U true CN201787111U (en) | 2011-04-06 |
Family
ID=43819074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020538306XU Expired - Fee Related CN201787111U (en) | 2010-09-21 | 2010-09-21 | Non-return gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896154A (en) * | 2015-05-25 | 2015-09-09 | 蚌埠南自仪表有限公司 | Sleeve one-way valve |
| CN105697361A (en) * | 2014-11-25 | 2016-06-22 | 瑞木镍钴管理（中冶）有限公司 | Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump |
-
2010
- 2010-09-21 CN CN201020538306XU patent/CN201787111U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697361A (en) * | 2014-11-25 | 2016-06-22 | 瑞木镍钴管理（中冶）有限公司 | Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump |
| CN104896154A (en) * | 2015-05-25 | 2015-09-09 | 蚌埠南自仪表有限公司 | Sleeve one-way valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204004574U (en) | Gudgeon ball valve | |
| CN203500596U (en) | Hard-and-soft sealing structure of valve flap of spring type safety valve | |
| CN101813192B (en) | High-flow adjustable ratio control valve | |
| CN201787111U (en) | Non-return gate valve | |
| CN204226809U (en) | A kind of stop valve structure | |
| CN202674331U (en) | Pressurizing stop valve | |
| CN202402725U (en) | Multifunctional check gate valve | |
| CN202790563U (en) | High-temperature high-pressure forged steel stop valve | |
| CN106855127A (en) | Cut-off type core shift butterfly valve | |
| CN201621336U (en) | Cushion swing check valve | |
| CN211780219U (en) | Valve linkage control system on high-pressure medium conveying line | |
| CN204610917U (en) | Forged steel pipeline soft seal plate valve | |
| CN202451900U (en) | Right-angle quick closing check valve | |
| CN202733095U (en) | Balance type high-pressure-difference regulating valve | |
| CN203131074U (en) | Wedge gate valve | |
| CN106015660A (en) | Quick closing check valve | |
| CN107806522B (en) | Steam extraction type quick-closing check valve and working method thereof | |
| CN202327152U (en) | Blast furnace pressure equalizing and depressurizing valve easy to overhaul and maintain | |
| CN207609849U (en) | The electronic bellows stop valve of core level-one | |
| CN202432029U (en) | Swing slow closing check valve | |
| CN204153234U (en) | Dress formula Bivalved check valve in one | |
| CN201159310Y (en) | Check valve | |
| CN202691167U (en) | Swing check valve | |
| CN204141040U (en) | A kind of overcritical valve | |
| CN203549012U (en) | Slowly-closing type check valve |
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: 20110406 Termination date: 20140921 |
|
| EXPY | Termination of patent right or utility model |