CN214579211U - Backflow-preventing pneumatic valve - Google Patents
Backflow-preventing pneumatic valve Download PDFInfo
- Publication number
- CN214579211U CN214579211U CN202120706124.7U CN202120706124U CN214579211U CN 214579211 U CN214579211 U CN 214579211U CN 202120706124 U CN202120706124 U CN 202120706124U CN 214579211 U CN214579211 U CN 214579211U
- Authority
- CN
- China
- Prior art keywords
- chamber
- pneumatic valve
- membrane
- push rod
- wall
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a backflow-preventing pneumatic valve, which comprises a membrane chamber, wherein the membrane chamber is fixedly welded at the top of the pneumatic valve, and a membrane is fixed on the inner wall of the membrane chamber; the fixed block is arranged in the membrane chamber in a lifting mode, penetrates through the membrane and is vertically connected to the inside of the membrane, a push rod is welded at the bottom of the fixed block, and a push plate is welded at the bottom of the push rod; and the monitoring chamber is welded at the lower end of the membrane chamber. This backflow prevention pneumatic valve, be provided with compressed air pump and inject compressed air into the epimembranal chamber of membrane, the compressed air inflation produces pressure, drive fixed block and push rod pushing down, the push pedal is thereupon removed downwards and is closed the shutter, sealed soft stopper plugs the exit of pneumatic valve chamber, utilize atmospheric pressure to make the push pedal be located between two shutters, no longer utilize atmospheric pressure to close the valve port, but utilize the push pedal to extrude spacingly to the shutter, this pneumatic valve has backflow prevention function, the air current or the difficult backward flow phenomenon that appears of rivers of flowing through, it is better to block the effect.
Description
Technical Field
The utility model relates to a pneumatic valve technical field specifically is a backflow prevention pneumatic valve.
Background
The pneumatic valve is driven by compressed air, the existing starting valve has poor backflow prevention effect, the valve port is closed completely by pressure generated by expansion of the compressed air, once the pressure of gas or liquid flowing through the pneumatic valve is too high, backflow is easily caused, besides, the control of injection of the compressed air is completely controlled manually, the pressure inside the pneumatic valve is controlled poorly, the pressure is too low, the pneumatic valve is probably not closed completely, and the backflow and other problems are caused; excessive pressure may cause internal components of the device to be pressed too much and cause damage.
Aiming at the problems, innovative design is urgently needed on the basis of the original pneumatic valve structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a backflow prevention pneumatic valve to the backflow prevention effect who proposes in solving above-mentioned background art is not good, is not convenient for control pneumatic valve inside pressure's problem.
In order to achieve the above object, the utility model provides a following technical scheme: a backflow prevention pneumatic valve comprising:
the diaphragm chamber is fixedly welded at the top of the pneumatic valve, and a diaphragm is fixed on the inner wall of the diaphragm chamber;
the fixed block is arranged in the membrane chamber in a lifting mode, penetrates through the membrane and is vertically connected to the inside of the membrane, a push rod is welded at the bottom of the fixed block, and a push plate is welded at the bottom of the push rod;
the monitoring chamber is welded at the lower end of the membrane chamber;
the spring is fixedly arranged between the fixed block and the monitoring cavity, the top end of the spring is fixed at the bottom of the fixed block, the bottom end of the spring is fixed at the top of the monitoring cavity, and one end of the push rod penetrates through the interior of the spring;
the pneumatic valve chamber is fixedly welded at the bottom of the pneumatic valve;
the compressed air pump is fixedly connected with the top end of the membrane chamber through a connecting pipe;
by adopting the technical scheme, compressed air can be injected into the membrane chamber through the compressed air pump, so that air pressure difference is generated, and a pressure source is provided for the interior of the pneumatic valve.
Preferably, the monitoring chamber is further provided with:
the infrared signal transmitting end is arranged in the monitoring chamber in a lifting mode, fixed to the outer wall of the push rod and completely matched with the outer size of the push rod in inner size;
the stroke monitor is arranged on the inner wall of the left side of the monitoring chamber, and the infrared signal transmitting end is connected with the stroke monitor through an electric signal;
by adopting the technical scheme, the infrared signal transmitting end can send out the motion signal of the push rod, and the travel monitor can record the motion track of the push rod according to the signal, so that the motion of the push rod is ensured to be in a proper range, the monitoring effect is achieved, and the important effect on controlling the internal pressure of the pneumatic valve is achieved.
Preferably, the pneumatic valve chamber is further provided with:
a push button switch installed at a position right in the center of an inner bottom wall of the pneumatic valve chamber, the push button switch being disposed right below the push plate;
the hinge is symmetrically arranged on the inner walls of the left side and the right side of the pneumatic valve chamber, one side of the hinge is fixedly connected with a stop door, and a sealing soft plug is fixed on the side wall of the stop door.
By adopting the technical scheme, the push plate can be ensured to move to the bottom of the pneumatic valve chamber through the push button switch, the compressed air pump can be stopped by pressing the switch through the push plate, so that the compressed air pump can not inject compressed air into the membrane chamber, the push rod drives the stop door to block the inlet and the outlet of the pneumatic valve chamber, and the stop door can be arranged perpendicular to the inner wall of the pneumatic valve chamber under the condition of no stress due to the design of the hinge, so that air flow or water flow is facilitated.
Preferably, the stop door forms a clamping structure with the pneumatic valve chamber through the sealing soft plug, the outer wall of the sealing soft plug is completely attached to the inner wall of the pneumatic valve chamber, and the shape and the size of the sealing soft plug are matched with those of the pneumatic valve chamber;
by adopting the technical scheme, the inlet and the outlet of the pneumatic valve chamber can be blocked by the sealing soft plug, the sealing effect is enhanced, and the closing effect of the pneumatic valve is better.
Preferably, the diaphragm is fixedly arranged on the inner wall of the diaphragm chamber, the diaphragm divides the interior of the diaphragm chamber into an upper part and a lower part, and the push rod and the spring are positioned on the lower half part of the diaphragm chamber;
adopt above-mentioned technical scheme, the diaphragm can be with two spaces that the diaphragm is indoor to be divided into completely independent, and compressed air is at the indoor chamber epicoele inflation of diaphragm for fixed block pressurized moves down, and the design of spring has played the supporting role to the fixed block under the circumstances of no pressure, and under the pressurized circumstances in fixed block top, the convenient fixed block that moves down of spring deformation compression.
Compared with the prior art, the utility model provides a backflow prevention pneumatic valve has following advantage:
1. the pneumatic valve has the advantages that a compressed air pump is arranged to inject compressed air into the upper cavity of the membrane chamber, the compressed air expands to generate pressure to drive the fixed block and the push rod to press downwards, the push plate moves downwards along with the compressed air pump to close the stop doors, the sealing soft plug plugs the inlet and the outlet of the pneumatic valve chamber, the push plate is located between the two stop doors by utilizing air pressure, the valve port is not closed by utilizing the air pressure, the stop doors are extruded and limited by utilizing the push plate, the pneumatic valve has an anti-backflow function, backflow phenomenon of flowing air flow or water flow is not easy to occur, and the blocking effect is good;
2. be provided with infrared signal transmitting terminal on the outer wall of push rod, the signal that the stroke monitor was launched through infrared signal transmitting terminal forms the motion of push rod and takes notes, when the push rod drove the push pedal and moves to the bottom of pneumatic valve room, stroke monitor and push-button switch will control compressed air pump and stop to inject compressed air into the membrane room, can guarantee that the atmospheric pressure in the membrane room keeps suitable, the problem of too big or undersize can not appear, protect internals can not damage because of pressure is too big, the undersize has also been avoided simultaneously, the push pedal does not move to the bottom of pneumatic valve room and the backward flow problem that leads to.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;
fig. 5 is a schematic view of the structural connection between the shutter and the sealing soft plug of the present invention.
In the figure: 1. a membrane chamber; 2. a membrane; 3. a fixed block; 4. a push rod; 5. a spring; 6. an infrared signal transmitting terminal; 7. pushing the plate; 8. monitoring the chamber; 9. a travel monitor; 10. a pneumatic valve chamber; 11. a push-button switch; 12. a hinge; 13. a shutter; 14. sealing the soft plug; 15. a compressed air pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a backflow prevention pneumatic valve comprising:
the pneumatic valve comprises a diaphragm chamber 1, a diaphragm 2 and a valve core, wherein the diaphragm chamber 1 is fixedly welded at the top of the pneumatic valve, and the diaphragm 2 is fixed on the inner wall of the diaphragm chamber 1; the diaphragm 2 is fixedly arranged on the inner wall of the diaphragm chamber 1, the diaphragm 2 divides the interior of the diaphragm chamber 1 into an upper part and a lower part, and the push rod 4 and the spring 5 are positioned at the lower half part of the diaphragm chamber 1;
the fixed block 3 is arranged in the membrane chamber 1 in a lifting mode, the fixed block 3 is vertically connected to the inside of the membrane 2 in a penetrating mode, a push rod 4 is welded to the bottom of the fixed block 3, and a push plate 7 is welded to the bottom of the push rod 4;
the compressed air pump 15 is started to inject compressed air into the membrane chamber 1, the inside of the membrane chamber 1 is divided into two completely independent spaces through the separation of the membrane 2, the compressed air expands in the upper cavity of the membrane chamber 1 to form air pressure difference, the fixed block 3 is pressed to move downwards to drive the push rod 4 to move downwards, and the spring 5 is pressed to contract;
a monitoring chamber 8 welded to the lower end of the membrane chamber 1; the monitoring chamber 8 is further provided with:
the infrared signal transmitting end 6 is arranged in the monitoring chamber 8 in a lifting mode, the infrared signal transmitting end 6 is fixed on the outer wall of the push rod 4, and the inner size of the infrared signal transmitting end 6 is completely matched with the outer size of the push rod 4;
the stroke monitor 9 is arranged on the left inner wall of the monitoring chamber 8, and the infrared signal transmitting end 6 is connected with the stroke monitor 9 through an electric signal;
when the push rod 4 moves downwards under stress, the infrared signal transmitting end 6 moves along with the movement of the push rod 4 and sends an infrared signal, the stroke monitor 9 can receive the signal, determine the movement stroke of the push rod 4 and ensure that the movement of the push rod is within a normal range, if the movement stroke exceeds the normal range, the compressed air pump 15 is closed through an electric signal to carry out emergency stopping, and the infrared signal transmitting end is an important protection measure for ensuring that the pressure of the membrane chamber 1 is normal;
the spring 5 is fixedly arranged between the fixed block 3 and the monitoring cavity 8, the top end of the spring 5 is fixed at the bottom of the fixed block 3, the bottom end of the spring 5 is fixed at the top of the monitoring cavity 8, and one end of the push rod 4 penetrates through the spring 5;
a pneumatic valve chamber 10 fixedly welded to the bottom of the pneumatic valve; the pneumatic valve chamber 10 is further provided with:
a push button switch 11 installed at a position in the middle of an inner bottom wall of the pneumatic valve chamber 10, the push button switch 11 being disposed directly below the push plate 7;
the hinge 12 is symmetrically arranged on the inner walls of the left side and the right side of the pneumatic valve chamber 10, one side of the hinge 12 is fixedly connected with a stop door 13, and a sealing soft plug 14 is fixed on the side wall of the stop door 13; the shutter 13 and the pneumatic valve chamber 10 form a clamping structure through the sealing soft plug 14, the outer wall of the sealing soft plug 14 is completely attached to the inner wall of the pneumatic valve chamber 10, and the shape and the size of the sealing soft plug 14 are matched with those of the pneumatic valve chamber 10
The push rod 4 drives the push plate 7 to move downwards, so that the baffle door 13 is pressed downwards to rotate until the bottom of the push plate 7 presses the button switch 11, the compressed air pump 15 is closed, the baffle stops moving, the baffle door 13 is pressed to abut against the inlet and outlet of the pneumatic valve chamber 10, the sealing soft plug 14 on the baffle door 13 is clamped into the inlet and outlet, the pneumatic pressure valve is closed, and the flowing air flow or water flow is cut off;
a compressed air pump 15 fixedly connected with the top end of the membrane chamber 1 through a connecting pipe
The compressed air pump 15 can inject compressed air into the diaphragm chamber 1 when the start valve is closed, and can also pump air out of the diaphragm chamber 1 when the start valve is opened, so as to provide and withdraw pressure in the pneumatic valve.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A backflow prevention pneumatic valve, comprising:
the diaphragm chamber is fixedly welded at the top of the pneumatic valve, and a diaphragm is fixed on the inner wall of the diaphragm chamber;
the fixed block is arranged in the membrane chamber in a lifting mode, penetrates through the membrane and is vertically connected to the inside of the membrane, a push rod is welded at the bottom of the fixed block, and a push plate is welded at the bottom of the push rod;
the monitoring chamber is welded at the lower end of the membrane chamber;
the spring is fixedly arranged between the fixed block and the monitoring cavity, the top end of the spring is fixed at the bottom of the fixed block, the bottom end of the spring is fixed at the top of the monitoring cavity, and one end of the push rod penetrates through the interior of the spring;
the pneumatic valve chamber is fixedly welded at the bottom of the pneumatic valve;
and the compressed air pump is fixedly connected with the top end of the membrane chamber through a connecting pipe.
2. A backflow-preventing pneumatic valve as claimed in claim 1, wherein said monitoring chamber is further provided with:
the infrared signal transmitting end is arranged in the monitoring chamber in a lifting mode, fixed to the outer wall of the push rod and completely matched with the outer size of the push rod in inner size;
and the stroke monitor is arranged on the inner wall of the left side of the monitoring chamber, and the infrared signal transmitting end is connected with the stroke monitor through an electric signal.
3. A backflow prevention pneumatic valve as claimed in claim 1, wherein said pneumatic valve chamber is further provided with:
a push button switch installed at a position right in the center of an inner bottom wall of the pneumatic valve chamber, the push button switch being disposed right below the push plate;
the hinge is symmetrically arranged on the inner walls of the left side and the right side of the pneumatic valve chamber, one side of the hinge is fixedly connected with a stop door, and a sealing soft plug is fixed on the side wall of the stop door.
4. A backflow prevention pneumatic valve as set forth in claim 3, wherein: the stop door forms a clamping structure with the pneumatic valve chamber through the sealing soft plug, the outer wall of the sealing soft plug is completely attached to the inner wall of the pneumatic valve chamber, and the shape and the size of the sealing soft plug are matched with those of the pneumatic valve chamber.
5. A backflow-preventing, pneumatically actuated valve as claimed in claim 1, wherein: the diaphragm is fixed to be set up the inner wall at the diaphragm chamber, and the diaphragm is two parts about dividing into the diaphragm chamber inside, just push rod and spring are located the latter half of diaphragm chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120706124.7U CN214579211U (en) | 2021-04-07 | 2021-04-07 | Backflow-preventing pneumatic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120706124.7U CN214579211U (en) | 2021-04-07 | 2021-04-07 | Backflow-preventing pneumatic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214579211U true CN214579211U (en) | 2021-11-02 |
Family
ID=78357792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120706124.7U Active CN214579211U (en) | 2021-04-07 | 2021-04-07 | Backflow-preventing pneumatic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214579211U (en) |
-
2021
- 2021-04-07 CN CN202120706124.7U patent/CN214579211U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115014873A (en) | Water quality monitoring stratified sampling device | |
| CN214579211U (en) | Backflow-preventing pneumatic valve | |
| CN208578456U (en) | A kind of Domestic combustible gas leakage emergency set | |
| CN113175032A (en) | Pressure water supply device | |
| CN112479136B (en) | A filling equipment for whitening production of emulsion of moisturizing | |
| CN215833445U (en) | Battery test box water-closing overflow device | |
| CN110617056A (en) | Triggering method and device for liquid level test of high-pressure oil-gas well | |
| CN215379435U (en) | Automatic alarm water pump control cabinet | |
| CN113945500A (en) | Dam wall body infiltration rate detector under water | |
| CN208487413U (en) | A kind of air compression air accumulator with electronic automatic steam trap | |
| CN212986159U (en) | Gas pressure reducing valve capable of automatically cutting off gas source | |
| CN209077295U (en) | A kind of jetting machine | |
| CN214171367U (en) | Adjustable exhaust valve of automobile | |
| CN212480244U (en) | Slow closing device for swing check valve | |
| CN219827848U (en) | High leakproofness relief valve | |
| CN219061437U (en) | Fireproof door with good smoke isolation effect | |
| CN217355633U (en) | High-pressure gate valve with pressure relief and explosion prevention functions | |
| CN218565148U (en) | Airtight oil return device is used in storage tank dehydration | |
| CN220749201U (en) | Explosion-proof wireless electromagnetic valve | |
| CN218956084U (en) | Nitrogen sealing valve fatigue life testing device | |
| CN219858731U (en) | Liquid storage tank structure | |
| CN220690637U (en) | Battery cover plate blasting test equipment | |
| CN220792837U (en) | Gas safety device with leakage alarm function | |
| CN220102126U (en) | Explosion-proof and air leakage-proof gas valve | |
| CN218869942U (en) | Automatic water storage equipment for water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |