CN202392200U - Check gate valve - Google Patents
Check gate valve Download PDFInfo
- Publication number
- CN202392200U CN202392200U CN2011205343635U CN201120534363U CN202392200U CN 202392200 U CN202392200 U CN 202392200U CN 2011205343635 U CN2011205343635 U CN 2011205343635U CN 201120534363 U CN201120534363 U CN 201120534363U CN 202392200 U CN202392200 U CN 202392200U
- Authority
- CN
- China
- Prior art keywords
- gate valve
- water outlet
- outlet tube
- baffle plate
- tube coupling
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 abstract description 5
- 210000004907 gland Anatomy 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241001661918 Bartonia Species 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
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- Sliding Valves (AREA)
Abstract
A check gate valve comprises a valve body and a spool. A check plate is disposed in a water outlet pipe junction of the gate valve body. An annular shoulder is arranged at the front end of the water outlet pipe junction. A limit retainer ring is screwed to the rear of the water outlet pipe junction. By the check gate valve, the problem that fluid reversely impacts the gate valve is solved. In addition, the check gate valve is simple in structure, low in cost and easy in popularization.
Description
Technical field
The utility model relates to a kind of gate valve.
Background technique
Existing gate valve comprises valve seat, valve body, flashboard, valve rod, pad, valve gap, bolt, pin, filler gland, movable joint screw, Gland, nut, Stem Mut, handwheel locking nut, nameplate, handwheel, liner; Can be divided into wedge-type flashboard type gate valve and parallel flashboard type gate valve by the sealing surface configuration, wedge-type flashboard type gate valve can be divided into single gate formula, double ram type and Flexible disc formula again; Parallel flashboard type gate valve can be divided into Single disc formula and double ram type.Press the screw position of valve rod and divide, can be divided into two kinds of Outside screw stem rising through handwheel type gate valve and inside screw non-rising stem type gate valves.To have fluid resistance little because of it for gate valve, opens and closes more laborsavingly, and MEDIA FLOW is to unrestricted, not flow-disturbing, do not reduce pressure, advantage such as body is simple, and structure length is short, and anufacturability is good, and is applied widely is used widely.But, the present gate valve that does not also prevent fluid countercurrent current.
Summary of the invention
Given this, the purpose of the utility model is to provide a kind of gate valve that prevents fluid countercurrent current.
For addressing the above problem; The technological scheme that the utility model provides is: a kind of non-return gate valve is provided; Comprise valve body and spool, the water outlet tube coupling front end of valve body has a ring convex shoulder, and a retaining board is set in the water outlet tube coupling; Said retaining board comprises that circular baffle plate and several evenly distribute and fixedly installs and perpendicular to the balance strip of circular baffle plate, the left end of balance strip does not exceed the left side of circular baffle plate on the circular baffle plate excircle.The diameter of circular baffle plate is greater than the diameter of ring convex shoulder place's perforate, and less than the internal diameter of water outlet tube coupling.Water outlet tube coupling rear portion spins spacing back-up ring is set.
Compared with prior art, the present invention has prolonged the length of water outlet tube coupling, and is provided with retaining board within it, makes gate valve increase the function that prevents fluid countercurrent current, and it is simple in structure, is easy to apply.
Description of drawings
Fig. 1 check valve partial sectional view schematic representation.
Fig. 2 retaining board schematic perspective view.
The spacing back-up ring schematic perspective view of Fig. 3.
Embodiment
Describe below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 1 to Fig. 3, the non-return gate valve comprises valve body and spool, and water outlet tube coupling 1 front end of valve body has ring convex shoulder 4, and the leading portion of water outlet tube coupling 1 is a smooth inner wall, and the rear end is provided with screw thread.A retaining board 2 is set in water outlet tube coupling 1, and said retaining board 2 comprises that circular baffle plate 201 and three evenly distribute and fixedly installs and perpendicular to the balance strip 202 of circular baffle plate 201 on circular baffle plate 201 excircles.Balance strip 202 is parallel with water outlet tube coupling 1, and under the support of flat horizontal stripe 202, circular baffle plate 201 remains vertical with water outlet tube coupling 1.The diameter of circular baffle plate 201 is greater than the diameter of ring convex shoulder 4 places perforate, and less than the internal diameter of water outlet tube coupling 1.Water outlet tube coupling 1 rear portion spins spacing back-up ring 3 is set.When gate valve was opened, current promoted retaining board 2 and move right, and current flow out from the gap between circular baffle plate 201 and the water outlet tube coupling 1; When gate valve was closed, the force retaining board 2 of water was moved to the left in the outlet pipe, closely contacted with ring convex shoulder 4, realized sealing, stoped flow reversal to be flowed.
Only be the preferred implementation of the utility model below, should be pointed out that above-mentioned preferred implementation should not be regarded as the restriction to the utility model, the protection domain of the utility model should be as the criterion with claim institute restricted portion.For those skilled in the art, in spirit that does not break away from the utility model and scope, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (2)
1. non-return gate valve; Comprise valve body and spool; Water outlet tube coupling (1) front end of valve body has a ring convex shoulder (4); It is characterized in that, a retaining board (2) is set in water outlet tube coupling (1), said retaining board (2) comprises that circular baffle plate (201) and several are uniformly distributed with fixing and perpendicular to the balance strip (202) of circular baffle plate (201) on circular baffle plate (201) excircle; The diameter of circular baffle plate (201) is located opening diameter greater than ring convex shoulder (4), and less than the internal diameter of water outlet tube coupling (1).
2. a kind of non-return gate valve according to claim 1 is characterized in that, water outlet tube coupling (1) rear portion spins spacing back-up ring (3) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205343635U CN202392200U (en) | 2011-12-20 | 2011-12-20 | Check gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205343635U CN202392200U (en) | 2011-12-20 | 2011-12-20 | Check gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202392200U true CN202392200U (en) | 2012-08-22 |
Family
ID=46667127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205343635U Expired - Fee Related CN202392200U (en) | 2011-12-20 | 2011-12-20 | Check gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202392200U (en) |
-
2011
- 2011-12-20 CN CN2011205343635U patent/CN202392200U/en not_active Expired - Fee Related
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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: 20120822 Termination date: 20141220 |
|
| EXPY | Termination of patent right or utility model |