CN210949953U - Gate valve with anti-interference non-return function - Google Patents
Gate valve with anti-interference non-return function Download PDFInfo
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- CN210949953U CN210949953U CN201922080909.3U CN201922080909U CN210949953U CN 210949953 U CN210949953 U CN 210949953U CN 201922080909 U CN201922080909 U CN 201922080909U CN 210949953 U CN210949953 U CN 210949953U
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Abstract
The utility model discloses a gate valve with anti-interference non-return function, which comprises a gate valve body, wherein the right end of the gate valve body is connected with a non-return valve body, a non-return valve seat is arranged between the gate valve body and the non-return valve body, a valve core positioning ring is arranged in the non-return valve body and close to the left end, a movable valve core is arranged between the non-return valve seat and the valve core positioning ring, the two ends of the valve core are provided with extension parts which pass through the non-return valve seat and the valve core positioning ring, a sealing gasket is arranged on one side of the valve core close to the valve core positioning ring, a sealing surface which is contacted with the sealing gasket is arranged on the non-return valve seat, a spring is arranged; the gate valve has the function of non-return backflow, can effectively prevent the interference between the household meters by the generated 'water hammer' effect when the valve is opened or closed, and can ensure the normal work of the water meter.
Description
Technical Field
The utility model relates to a gate valve of area jam-proof non return function belongs to valve technical field.
Background
The opening and closing part of the gate valve is a gate plate, the movement direction of the gate plate is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled; the manufacturers for producing the gate valves in China are more, the connection sizes are mostly not uniform, and the gate valves are mainly classified into a general category which is mainly JB/T2203-1999 Gate valve Structure Length;
the working principle of the manual gate valve is as follows: the hand wheel is rotated, and the valve plate connected with the valve rod is lifted or lowered by advancing and retreating the threads of the hand wheel and the valve rod, so that the opening and closing effects are achieved.
Classified by shell/body material, gate valves can be divided into:
(1) the metal valve can be carbon steel valve, alloy steel valve, stainless steel valve, cast iron valve, titanium alloy valve, Monel valve, copper alloy valve, lead alloy valve, etc.
(2) The metal valve body lining valves, such as rubber lining valves, fluorine lining valves, lead lining valves, plastic lining valves and enamel lining valves.
(3) Non-metal material valves, such as ceramic valves, glass valves, plastic valves.
The soft sealing gate valve, the check valve and other valves which have single functions and are used in the water supply network in the cities and towns at present are assembled and installed and the valves with hand wheels, and the assembled valves are opened and closed without special tools and can be opened and closed randomly by people in the management of the tap water network, so that the installation is inconvenient, and the two valves are installed at the interface and are easy to leak due to improper sealing.
Meanwhile, in practical application, when the valve is closed or opened, a 'water hammer' effect can occur, so that when the valve is suddenly opened or closed, great impact can be caused, the interference on the water meter in the pipe network can be realized, and meanwhile, the pollution is easily caused by the backflow of media in the pipeline.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art, when the user closed or opened the valve, can produce "water hammer" effect, cause great impact in the geminate transistors, water gauge to the pipe network disturbs, the medium refluence produces the shortcoming of pollution, a gate valve of area jam-proof non return function is provided, this gate valve has the function of preventing the non return refluence, can effectually prevent when opening, close the valve, the normal work of water gauge is guaranteed to the disturbance between the household table of "water hammer" effect of production.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the basic concept of the utility model is as follows:
the gate valve comprises a valve body, a rubber plate, a valve rod, a valve cover, a middle opening pad, a pressing ring, a non-return valve body, a valve core, a sealing ring, a spring and the like; the top of the valve body is in threaded connection with the bottom of the valve cover, the valve rod penetrates through the valve body and the valve cover, the rubber plate is in trapezoidal threaded connection with the lower portion of the valve rod, the valve cover is provided with a concave cavity, the valve rod is arranged in the concave cavity, the upper end of the valve rod is polygonal, the top end of the valve cover is provided with a dustproof cover, a special tool is provided with a concave polygon matched with the polygon on the upper end of the valve rod and can drive the valve rod to rotate, and the valve rod drives the rubber plate to move up and; the check valve body is in threaded connection with the right side of the valve body and sealed through an O-shaped sealing ring, a check valve seat, a conical spring and a valve core are arranged in the check valve body for positioning and guiding, and the right side of the check valve body is in outer and inner hexagonal structure and threaded connection.
The left end and the right end of the valve body are both connected by sealing pipe threads.
The convex polygon at the upper end of the special tool is matched with the concave polygon on the dust cover.
The valve rod is fixed on the valve cover through a pressing ring and sealed by two O-shaped sealing rings.
The inner cavity of the valve body is provided with a rubber plate sealing surface and a valve core sealing surface, the rubber plate sealing surface has the function of cutting off a medium, and the valve core sealing surface has the function of preventing medium interference and backflow.
Particularly, the utility model discloses technical scheme as follows:
the utility model provides a take gate valve of jam-proof non return function, includes the floodgate valve body, its characterized in that: the check valve is characterized in that the right end of the brake valve body is connected with a check valve body, a check valve seat is arranged between the brake valve body and the check valve body, a valve core positioning ring is arranged at a position close to the left end in the check valve body, a movable valve core is arranged between the check valve seat and the valve core positioning ring, extending parts penetrating through the check valve seat and the valve core positioning ring are arranged at two ends of the valve core, a sealing gasket is arranged on one side, close to the valve core positioning ring, of the valve core, a sealing surface in contact with the sealing gasket is arranged on the check valve seat, a spring is arranged between the sealing gasket and the valve core positioning ring, the spring is pressed on the sealing gasket through a sealing ring pressing ring, the sealing.
The spring is a conical spring, the large end of the conical spring is connected with the sealing ring pressing ring, and the small end of the conical spring is connected with the valve core positioning ring.
The gate valve body comprises a valve rod, a valve body and a valve cover screwed on the upper end of the valve body, a left sealing surface and a right sealing surface are arranged in the valve body, a rubber plate capable of being extruded and sealed with the left sealing surface and the right sealing surface is further arranged in the valve body, the valve rod is rotatably installed in the valve cover and the valve body, the lower end of the valve rod is connected with the rubber plate through trapezoidal threads, the upper end of the valve rod is lower than the valve cover, the end portion of the valve rod is polygonal, and the upper end of the valve.
The valve cover is rotatably connected with a dustproof cover, a recess is formed in the dustproof cover, and a concave polygon matched with a special tool is arranged at the position, corresponding to the recess, of the dustproof cover.
The valve comprises a valve cover, a valve rod, a pressing ring, a shaft shoulder and a valve rod, wherein the valve cover is provided with a threaded hole, the valve rod penetrates through the threaded hole, the threaded hole is in threaded connection with the pressing ring, the pressing ring and the threaded hole are screwed and then pressed on the shaft shoulder on the valve rod, and the shaft shoulder is located in a counter bore.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses not only have the leakproofness of gate valve, simultaneously, still have non return, jam-proof function, can effectual solution when practical application takes place "water hammer" effect, solve the disturbance between the household table, the normal operating of effectual assurance household table, simultaneously, also avoided the refluence pollution of intraductal medium.
2. The utility model discloses increased the interior concealed and opened and close the structure in the valve upper end, in the in-service use, need use special instrument just can operate the valve, realize opening and close of valve, avoid the valve to be opened and close by the people at will, the management of the valve user of being convenient for unit.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Reference numerals: 1 valve body, 2 offset plates, 3 valve rods, 4 middle opening pads, 5 valve covers, 6 pressing rings, 7O-shaped sealing rings, 8 dust covers, 9 check valve bodies, 10 check valve seats, 11 valve cores, 12 sealing gaskets, 13 sealing ring pressing rings, 14 springs and 15 valve core positioning rings.
Detailed Description
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
A gate valve with anti-interference non-return function comprises a gate valve body, wherein the right end of the gate valve body is connected with a non-return valve body 9, a check valve seat 10 is arranged between the brake valve body and the check valve body 9, a valve core positioning ring 15 is arranged in the check valve body 9 near the left end, a movable valve core 11 is arranged between the check valve seat 10 and the valve core positioning ring 15, two ends of the valve core 11 are provided with extending parts which penetrate through the check valve seat 10 and the valve core positioning ring 15, a sealing gasket 12 is arranged on one side of the valve core 11 near the valve core positioning ring 15, a sealing surface which is contacted with the sealing gasket 12 is arranged on the check valve seat 10, a spring 14 is arranged between the sealing gasket 12 and the valve core positioning ring 15, the spring 14 is pressed on the sealing gasket 12 through a sealing ring pressing ring 13, the sealing gasket 12 is tightly attached to the sealing surface of the check valve seat 10 under the pre-pressure action of the spring 14, the brake valve body is sealed with the check valve body 9 and the check valve seat 10 through an O-shaped sealing ring 7.
Wherein, the left and right both ends of the gate valve body are sealed pipe thread openings, the right end with check valve body 9 threaded connection adopts O-shaped sealing ring to seal, and the right end of check valve body 9 is provided with the sealed pipe thread openings.
Example 2
The embodiment is further optimized on the basis of embodiment 1, in this embodiment, the spring 14 is a conical spring 14, a large end of the conical spring 14 is connected with the sealing ring pressing ring 13, and a small end of the conical spring is connected with the valve core positioning ring 15.
Example 3
The embodiment is further optimized on the basis of embodiment 2, and in this embodiment, the brake valve body includes valve rod 3, valve body 1 and valve gap 5 of spiro union in valve body 1 upper end, be equipped with left and right sealed face in the valve body 1, still be equipped with in the valve body 1 and carry out extrusion seal's offset plate 2 with left and right sealed face, valve rod 3 rotates and installs in valve gap 5 and valve body 1, valve rod 3 lower extreme and offset plate 2 pass through trapezoidal thread connection, valve rod 3 upper end is less than valve gap 5, and the tip is the polygon, and valve rod 3 upper end can agree with specialized tool.
The valve cover 5 is provided with a threaded hole, the valve rod 3 penetrates through the threaded hole, the threaded hole is in threaded connection with a pressing ring 6, the pressing ring 6 is screwed with the threaded hole and then pressed on a shaft shoulder on the valve rod 3, and the shaft shoulder is positioned in a counter bore of the pressing ring 6; wherein the diameter of the shaft shoulder is smaller than the inner diameter of the 6L counter bore of the pressing ring.
In actual use, at least two O-shaped sealing rings 7 are needed to be used for sealing between the valve rod 3 and the valve cover 5; a middle opening gasket 4 is arranged between the valve body 1 and the valve cover 5.
Like this, because valve rod 3 upper end is less than valve gap 5, and the tip is the polygon, in the in-service use, can only just open and close through having the specialized tool who matches with 3 tip of valve rod promptly, rotate valve rod 3 through specialized tool, valve rod 3 rotates and then makes offset plate 2 rise or descend, and offset plate 2 realizes with left and right sealed face that the contact extrusion perhaps keeps away from and unclamps, and then realizes opening and close of valve.
Example 4
This embodiment is further optimized on the basis of embodiment 3, in this embodiment, rotating connection has dust cover 8 on valve gap 5, and dust cover 8 accessible threaded connection is on valve gap 5, be equipped with sunken on the dust cover 8, the upper end of valve rod 3 is located in sunken, it is equipped with the concave polygon that agrees with specialized tool to lie in sunken corresponding position on the dust cover 8.
In this way, the dust cover 8 can play a role of dust prevention.
Claims (5)
1. The utility model provides a take gate valve of jam-proof non return function, includes the floodgate valve body, its characterized in that: the check valve is characterized in that the right end of the brake valve body is connected with a check valve body, a check valve seat is arranged between the brake valve body and the check valve body, a valve core positioning ring is arranged at a position close to the left end in the check valve body, a movable valve core is arranged between the check valve seat and the valve core positioning ring, extending parts penetrating through the check valve seat and the valve core positioning ring are arranged at two ends of the valve core, a sealing gasket is arranged on one side, close to the valve core positioning ring, of the valve core, a sealing surface in contact with the sealing gasket is arranged on the check valve seat, a spring is arranged between the sealing gasket and the valve core positioning ring, the spring is pressed on the sealing gasket through a sealing ring pressing ring, the sealing.
2. The gate valve with the function of preventing interference and stopping return according to claim 1, wherein: the spring is a conical spring, the large end of the conical spring is connected with the sealing ring pressing ring, and the small end of the conical spring is connected with the valve core positioning ring.
3. The gate valve with the function of preventing interference and stopping return according to claim 1, wherein: the gate valve body comprises a valve rod, a valve body and a valve cover screwed on the upper end of the valve body, a left sealing surface and a right sealing surface are arranged in the valve body, a rubber plate capable of being extruded and sealed with the left sealing surface and the right sealing surface is further arranged in the valve body, the valve rod is rotatably installed in the valve cover and the valve body, the lower end of the valve rod is connected with the rubber plate through trapezoidal threads, the upper end of the valve rod is lower than the valve cover, the end portion of the valve rod is polygonal, and the upper end of the valve.
4. The gate valve with the function of preventing interference and stopping return according to claim 3, wherein: the dustproof cover is connected to the valve cover, a recess is formed in the dustproof cover, and a concave polygon matched with a special tool is arranged at a position, corresponding to the recess, on the dustproof cover.
5. The gate valve with interference-proof and check functions as claimed in claim 4, wherein: the valve comprises a valve cover, a valve rod, a pressing ring, a shaft shoulder and a valve rod, wherein the valve cover is provided with a threaded hole, the valve rod penetrates through the threaded hole, the threaded hole is in threaded connection with the pressing ring, the pressing ring and the threaded hole are screwed and then pressed on the shaft shoulder on the valve rod, and the shaft shoulder is located in a counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922080909.3U CN210949953U (en) | 2019-11-27 | 2019-11-27 | Gate valve with anti-interference non-return function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922080909.3U CN210949953U (en) | 2019-11-27 | 2019-11-27 | Gate valve with anti-interference non-return function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949953U true CN210949953U (en) | 2020-07-07 |
Family
ID=71387969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922080909.3U Active CN210949953U (en) | 2019-11-27 | 2019-11-27 | Gate valve with anti-interference non-return function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949953U (en) |
-
2019
- 2019-11-27 CN CN201922080909.3U patent/CN210949953U/en active Active
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