CN109667955B - Diaphragm valve and method for conveying fluid by adopting diaphragm valve - Google Patents
Diaphragm valve and method for conveying fluid by adopting diaphragm valve Download PDFInfo
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- CN109667955B CN109667955B CN201811529004.3A CN201811529004A CN109667955B CN 109667955 B CN109667955 B CN 109667955B CN 201811529004 A CN201811529004 A CN 201811529004A CN 109667955 B CN109667955 B CN 109667955B
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- 239000012530 fluid Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 239000013013 elastic material Substances 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002716 delivery method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a diaphragm valve and a method for conveying fluid by adopting the diaphragm valve, and relates to the technical field of valves; the valve cover is provided with an air source interface, the air inlet of the electromagnetic valve is connected with the air compression system, the air outlet of the electromagnetic valve is connected with the atmosphere, and the working port of the electromagnetic valve is connected with the air source interface; the valve body is provided with a valve body inlet and a valve body outlet, and a material inlet and a material outlet which are respectively communicated with the valve body inlet and the valve body outlet; the valve cover is connected with the valve body, and a cavity is arranged between the valve cover and the valve body; the diaphragm pad is arranged in the cavity, a diaphragm is arranged on the diaphragm pad, the diaphragm corresponds to the inlet and outlet positions of the valve body, and the diaphragm is made of elastic materials; when the electromagnetic valve is electrified, the diaphragm is not stressed to be a bulge, and a space is reserved between the diaphragm and the inlet and the outlet of the valve body; when the electromagnetic valve is not electrified, the diaphragm is forced to be extruded and covered on the inlet and the outlet of the valve body. The invention has the beneficial effects of realizing accurate blanking of fluid, being applicable to the requirements of different occasions and having wide application range.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a diaphragm valve and a method for conveying fluid by using the diaphragm valve.
Background
A diaphragm valve is a valve that opens and closes by deformation of a flexible diaphragm (e.g., a rubber diaphragm). Along with the rapid development of the breeding industry, the requirements on intelligent feeding are higher and higher, and particularly, a valve is needed to control the accurate feeding of feed so as to realize intelligent feeding. But the valve among the prior art is not good to the fodder aqueous solution unloading control effect, can not realize accurate unloading and feeding because it is applicable to intelligent feeding field to have to study a diaphragm valve of accurate unloading of fodder aqueous solution to can satisfy.
Chinese patent CN107747634a discloses a diaphragm valve, a fluid delivery device comprising the diaphragm valve and a delivery method thereof, the valve body, valve cap and diaphragm of the patent, the principle of the patent is: when the electromagnetic valve is not electrified, the inner cavity of the valve body is in a normal pressure state, the diaphragm is in a natural state, and the inlet and the outlet of the valve body are sealed by the diaphragm; the outlet of the valve body is connected with the vacuum dirt collection tank, the diaphragm and the valve body are sucked together under the action of negative pressure, and fluid cannot pass through; when the electromagnetic valve is electrified, negative pressure is generated to adsorb the diaphragm upwards and cling to the valve cover, the inlet and outlet of the valve body are opened, and fluid is sucked through under the action of the negative pressure. When the valve is used, on one hand, the diaphragm needs to be tightly attached to the inlet and the outlet of the valve body in a natural state, and as the diaphragm is not stressed in the natural state, the diaphragm cannot be completely tightly attached to the inlet and the outlet of the valve body, so that part of fluid can still pass through the valve body, and therefore, accurate blanking cannot be realized; on the other hand, the patent needs to connect the outlet of the valve body with a vacuum device, and the diaphragm and the valve body are attracted under the action of the negative pressure of the vacuum device, so that fluid cannot pass through; therefore, the diaphragm valve of the patent cannot be applied to an atmospheric device, and cannot be used for accurate blanking control of feed aqueous solution under atmospheric pressure because negative pressure cannot be generated in the atmospheric device and the diaphragm cannot be adsorbed on an inlet and an outlet of the valve body.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art: the diaphragm valve is suitable for the intelligent feeding field and can meet the requirement of accurate blanking of feed aqueous solution, and a method for conveying fluid by adopting the diaphragm valve.
The technical scheme of the invention is as follows:
a diaphragm valve comprises an air compression system, an electromagnetic valve, a valve cover, a diaphragm pad and a valve body which are connected in sequence; the valve cover is provided with an air source interface, an air inlet of the electromagnetic valve is connected with the air compression system, an air outlet of the electromagnetic valve is connected with the atmosphere, and a working port of the electromagnetic valve is connected with the air source interface on the valve cover; the upper end of the valve body is provided with a valve body inlet and a valve body outlet, and the lower end of the valve body is provided with a material inlet and a material outlet which are respectively communicated with the valve body inlet and the valve body outlet; the lower end of the valve cover is connected with the upper end of the valve body, and a cavity is formed between the valve cover and the valve body; the diaphragm cushion is arranged in the cavity, a diaphragm is arranged in the middle of the diaphragm cushion, the diaphragm corresponds to the position of the inlet and the outlet of the valve body, and the diaphragm is made of elastic materials; the diaphragm is of a convex structure when not stressed, and a space is reserved between the diaphragm and the inlet and the outlet of the valve body; the diaphragm has a concave structure when stressed and covers the inlet and the outlet of the valve body; when the electromagnetic valve is electrified, a separation space is reserved between the unstressed diaphragm and the inlet and the outlet of the valve body; when the electromagnetic valve is not electrified, the diaphragm is stressed to be extruded downwards and covers the inlet and the outlet of the valve body.
As the preferable technical scheme, the valve body inlet and outlet and the diaphragm are of circular structures.
As a preferable technical scheme, the diameter of the diaphragm is larger than or equal to the diameter of the inlet and the outlet of the valve body.
As a preferable technical scheme, the lower surface of the diaphragm is provided with an annular first groove, the upper surface of the valve body is provided with a corresponding first raised line, and the first raised line is positioned at the outer side of the inlet and the outlet of the valve body.
As the preferable technical scheme, the upper surface of the diaphragm is provided with annular second raised strips, the lower surface of the valve cover is provided with corresponding second grooves, and the second grooves are positioned on the outer side of the air source interface.
As the preferable technical scheme, the valve cover and the diaphragm pad are made of rubber materials.
As the preferable technical scheme, the air source interface is internally embedded with a copper sleeve, the upper end of the copper sleeve is provided with external threads, and the valve cover is in threaded connection with the working port of the electromagnetic valve through the copper sleeve.
As the preferable technical scheme, the lower extreme of valve body is equipped with 2 material inlets and 1 material export, perhaps is equipped with 1 material inlet and 2 material exports.
As the preferable technical scheme, the valve cover, the diaphragm pad and the valve body are connected through matched bolts and nuts.
A method for delivering fluid using the diaphragm valve, comprising: the method comprises the following working states:
s1, under the condition that fluid is required to be conveyed, the electromagnetic valve is electrified, and an exhaust port of the electromagnetic valve is opened; air compressed by the air compression system enters from an air inlet of the electromagnetic valve and is discharged from an air outlet of the electromagnetic valve; the cavity between the valve cover and the valve body is in a normal pressure state, the diaphragm gasket is in a natural state, a separation space is reserved between the diaphragm gasket and the inlet and the outlet of the valve body, namely the diaphragm valve is opened, and fluid can enter the discharge port of the valve body from the feed port of the valve body;
s2, under the condition that fluid is not required to be conveyed, the electromagnetic valve is not electrified, and the exhaust port of the electromagnetic valve is closed; air compressed by the air compression system enters the electromagnetic valve from an air inlet of the electromagnetic valve and enters the valve cover from a working port of the electromagnetic valve; the cavity between the valve cover and the valve body is in a high-pressure state, the diaphragm gasket is pressed downwards by force and covers the inlet and the outlet of the valve body, namely the diaphragm valve is closed, and fluid cannot enter the discharge port of the valve body from the feed port of the valve body;
s3, when the fluid needs to be conveyed again, the electromagnetic valve is electrified, and an exhaust port of the electromagnetic valve is opened; air compressed by the air compression system enters from an air inlet of the electromagnetic valve and is discharged from an air outlet of the electromagnetic valve; the cavity between the valve cover and the valve body is in a normal pressure state, the diaphragm pad returns to a natural state under the action of self elasticity, namely, the diaphragm pad is separated from the inlet and the outlet of the valve body, namely, the diaphragm valve is opened, and fluid can enter the discharge port of the valve body from the feed port of the valve body.
The beneficial effects of the invention are as follows: compared with the prior art, the invention has the following advantages:
(1) The electromagnetic valve is connected with the air compression system on one hand, and the diaphragm gasket is separated from the inlet and the outlet of the valve body in a natural state on the other hand; when the electromagnetic valve is electrified, the diaphragm pad is in a natural convex structure in a natural state, so that the inlet and outlet of the valve body are opened, and fluid can pass through the valve body; when the electromagnetic valve is powered off, air compressed by the air compression system enters a cavity between the valve cover and the valve body, so that the diaphragm is stressed and downwards pressed to be tightly covered on the inlet and the outlet of the valve body, the inlet and the outlet of the valve body are closed, and fluid cannot pass through, therefore, by adopting the design principle, accurate blanking of the fluid can be realized, when the electromagnetic valve is powered on, the diaphragm is not stressed, and the fluid can normally pass through the valve body; when the valve body is required to be closed, the electromagnetic valve is disconnected, and the diaphragm can be tightly attached to the inlet and the outlet of the valve body by compressed air, so that fluid cannot pass through the valve body; and because the diaphragm is tightly attached to the inlet and the outlet of the valve body by compressed air, the accurate opening and closing of the inlet and the outlet of the valve body are controlled; the diaphragm can be tightly attached to the inlet and the outlet of the valve body without connecting the valve body with the negative pressure device, so that the device can be suitable for the requirements of different occasions, particularly for the normal pressure environment, and has wide application range.
(2) According to the invention, the valve cover and the electromagnetic valve are connected by arranging the copper sleeve, and the copper sleeve is provided with the threads, so that the diaphragm valve has no specific requirements on the types of the electromagnetic valve, can be connected with various types of electromagnetic valves, saves cost and is convenient to replace.
(3) The valve body is provided with the three-way pipe which can be connected with different pipes, so that the cost is saved; and can advance two kinds of materials simultaneously, perhaps export the material respectively from two exports, the practicality is strong.
(4) According to the invention, the matched convex strips and grooves are respectively arranged on the surfaces of the valve cover, the diaphragm and the valve body, so that the sealing of the connection of the valve cover, the diaphragm and the valve body is greatly improved, and the use effect of the diaphragm valve is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of an explosive structure according to the present invention;
FIG. 3 is a schematic diagram of an explosion structure of the present invention;
FIG. 4 is a schematic rear view of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is a cross-sectional view of the solenoid valve of the present invention in use when energized;
FIG. 7 is a cross-sectional view of the solenoid valve of the present invention in use when the solenoid valve is de-energized;
the figures indicate: 1. an electromagnetic valve; 11. an air inlet; 12. an exhaust port; 13. a work port; 2. a valve cover; 21. an air source interface; 22. a second groove; 23. a copper sleeve; 3. a membrane pad; 31. a diaphragm; 32. a first groove; 33. a second protruding strip; 4. a valve body; 41. an inlet and an outlet of the valve body; 42. a first protruding strip; 5. a bolt; 6. nut
Detailed Description
The present invention will be described in further detail with reference to the following specific examples, but the present invention is not limited to the following specific examples.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Example 1
As shown in fig. 1 to 5, the diaphragm valve of the present invention comprises an air compression system (not shown), a solenoid valve 1, a valve cap 2, a diaphragm gasket 3 and a valve body 4 which are connected in sequence; the electromagnetic valve 1 maintains a sealing state with the valve cap 2, the diaphragm gasket 3 and the valve body 4.
In this embodiment, the air compression system may be a prior art air compressor.
In this embodiment, the electromagnetic valve is also a three-way electromagnetic valve in the prior art, specifically, the electromagnetic valve 1 is provided with an air inlet 11, an air outlet 12 and a working port 13; the air inlet 11 of the solenoid valve 1 is connected to an air compression system, and the air outlet 12 of the solenoid valve 1 is connected to the atmosphere.
The upper surface of the valve cover 2 is arc-shaped and protruding, and the upper end of the valve cover 2 is provided with an air source interface 21 communicated with the lower surface of the valve cover 2, and the air source interface 21 is connected with the working port 13 of the electromagnetic valve 1.
A diaphragm 31 is provided in the middle of the diaphragm pad 3, the diaphragm 31 being of an elastic material, the diaphragm 31 being of a convex configuration when unstressed, in this embodiment the diaphragm 31 being of a circular configuration.
The upper end of the valve body 4 is provided with a valve body inlet and outlet 41, and the lower end is provided with a material inlet and a material outlet which are respectively communicated with the valve body inlet and outlet 41; the lower end of the valve cover 2 is connected with the upper end of the valve body 4, and a cavity is formed between the valve cover 2 and the valve body 4; the diaphragm pad 3 is arranged in the cavity, the diaphragm 31 corresponds to the position of the valve body inlet and outlet 41, the valve body inlet and outlet 41 is also of a circular structure, and the diameter of the diaphragm 31 is larger than or equal to the diameter of the valve body inlet and outlet 41.
Screw holes are formed in the peripheries of the valve cover 2, the diaphragm gasket 3 and the valve body 4, so that the valve cover 2, the diaphragm gasket 3 and the valve body 4 are connected through matched bolts 5 and nuts 6.
When the electromagnetic valve 1 is electrified, the diaphragm 31 in the diaphragm pad 3 is in a natural state and is in a convex shape, so that a separation space is reserved between the diaphragm 31 and the valve body inlet and outlet 41, and the valve body inlet and outlet 41 is opened, namely, fluid to be conveyed can enter the valve body inlet and outlet 41 from the feed inlet of the valve body 4 and flow out from the discharge outlet of the valve body 4.
When the electromagnetic valve 1 is not electrified, compressed air enters the electromagnetic valve 1 from the air inlet 11 of the electromagnetic valve 1 through the air compression system, and enters the valve cover 2 from the working port 13 of the electromagnetic valve 1; the diaphragm 31 in the diaphragm gasket 3 is pressed downwards under the force and covers the valve body inlet and outlet 41, and the valve body inlet and outlet 41 is closed, namely the fluid to be conveyed cannot flow into the valve body inlet and outlet 41 from the feed inlet of the valve body 4.
Example 2
As shown in fig. 2 to 3, in this embodiment, a first groove 32 and a first protruding strip 42 are added on the basis of embodiment 1, specifically, an annular first groove 32 is provided on the lower surface of the diaphragm 31, a corresponding first protruding strip 42 is provided on the upper surface of the valve body 4, and the first protruding strip 42 is located outside the valve body inlet and outlet 41, so that the first protruding strip 42 is installed in the first groove 32. The sealing effect between the diaphragm gasket 3 and the valve body 4 can be improved by providing the first protrusion 42 to be engaged with the first groove 32.
Example 3
As shown in fig. 2 to 3, in this embodiment, a second protruding strip 33 and a second groove 22 are added on the basis of embodiment 1, specifically, an annular second protruding strip 33 is provided on the upper surface of the diaphragm 31, a corresponding second groove 22 is provided on the lower surface of the valve cover 2, and the second groove 22 is located outside the air source port 21, so that the second protruding strip 33 is installed in the second groove 22. The sealing effect between the diaphragm gasket 3 and the valve cap 2 can be improved by providing the second protrusion 33 and the second groove to be engaged.
In this embodiment, the valve cap 2 and the diaphragm pad 3 are made of rubber, and the sealing effect of the rubber is good.
Example 4
As shown in fig. 2 and 5, in this embodiment, a copper sleeve 23 is added on the basis of embodiment 1, specifically, a copper sleeve 23 is embedded in an air source interface 21, an external thread is provided at the upper end of the copper sleeve 23, and a valve cover 2 is in threaded connection with a working port 13 of an electromagnetic valve 1 through the copper sleeve 23. The valve cover 2 and the electromagnetic valve 1 are connected through the copper sleeve 23, and threads are arranged on the copper sleeve 23, so that the electromagnetic valve is applicable to electromagnetic valves 1 of different types.
Example 5
As shown in fig. 2 and 3, the valve body 4 is specifically defined in this embodiment on the basis of embodiment 1, and further, the lower end of the valve body 4 is a three-way port, and the three-way port is 2 material inlets and 1 material outlet, or is 1 material inlet and 2 material outlets. The valve body 4 is arranged as a three-way pipe which can be connected with different pipes, so that the cost is saved; and can advance two kinds of materials simultaneously, perhaps export the material respectively from two exports, the practicality is strong.
Example 6
As shown in fig. 6-7, the present embodiment relates to a method for delivering fluid by using the diaphragm valve, which includes the following working states:
s1, under the condition that fluid needs to be conveyed, the electromagnetic valve 1 is electrified, and the exhaust port 12 of the electromagnetic valve 1 is opened; air compressed by the air compression system enters from an air inlet 11 of the electromagnetic valve 1 and is discharged from an air outlet 12 of the electromagnetic valve 1; the cavity between the valve cover 2 and the valve body 4 is in a normal pressure state, the diaphragm 31 on the diaphragm pad 3 is in a natural bulge state, and a separation space is reserved between the diaphragm pad 3 and the valve body inlet and outlet 41, namely the valve body inlet and outlet 41 is opened, and fluid can enter the valve body inlet and outlet 41 from the feed inlet of the valve body 4 and flow into the discharge outlet of the valve body 4 from the valve body inlet and outlet 41;
s2, under the condition that fluid is not required to be conveyed, the electromagnetic valve 1 is not electrified, and the exhaust port 12 of the electromagnetic valve 1 is closed; air compressed by the air compression system enters the electromagnetic valve 1 from the air inlet 11 of the electromagnetic valve 1 and enters the valve cover 2 from the working port 13 of the electromagnetic valve 1; the cavity between the valve cover 2 and the valve body 4 is in a high-pressure state, so that the diaphragm gasket 3 is pressed downwards under the force and covers the valve body inlet and outlet 41, namely, the valve body inlet and outlet 41 is closed, and fluid cannot enter the discharge port of the valve body 4 from the feed port of the valve body 4;
s3, when the fluid needs to be conveyed again, the electromagnetic valve 1 is electrified, and the exhaust port 12 of the electromagnetic valve 1 is opened; air compressed by the air compression system enters from an air inlet 11 of the electromagnetic valve 1 and is discharged from an air outlet 12 of the electromagnetic valve 1; the cavity between the valve cover 2 and the valve body 4 is in a normal pressure state, the diaphragm pad 3 returns to a natural state under the action of self elasticity, namely, the diaphragm pad 3 is separated from the valve body inlet and outlet 41, namely, the valve body inlet and outlet 41 is opened, and fluid can enter the valve body inlet and outlet 41 from the feed inlet of the valve body 4 and flow into the discharge outlet of the valve body 4 from the valve body inlet and outlet 41.
The above is merely exemplary embodiments of the present invention, and the scope of the present invention is not limited in any way. All technical schemes formed by adopting equivalent exchange or equivalent substitution fall within the protection scope of the invention.
Claims (8)
1. A diaphragm valve, characterized by: the valve comprises an air compression system, an electromagnetic valve (1), a valve cover (2), a diaphragm pad (3) and a valve body (4) which are connected in sequence; an air source interface (21) is arranged on the valve cover (2), an air inlet (11) of the electromagnetic valve (1) is connected with the air compression system, an air outlet (12) of the electromagnetic valve (1) is connected with the atmosphere, and a working port (13) of the electromagnetic valve (1) is connected with the air source interface (21) on the valve cover (2); the upper end of the valve body (4) is provided with a valve body inlet and outlet (41), and the lower end of the valve body is provided with a material inlet and a material outlet which are respectively communicated with the valve body inlet and outlet (41); the lower end of the valve cover (2) is connected with the upper end of the valve body (4), and a cavity is formed between the valve cover (2) and the valve body (4); the diaphragm pad (3) is arranged in the cavity; a diaphragm (31) is arranged in the middle of the diaphragm pad (3), the diaphragm (31) corresponds to the position of the valve body inlet and outlet (41), and the diaphragm (31) is made of an elastic material; the diaphragm (31) is of a convex structure when not stressed, and a space is reserved between the diaphragm and the valve body inlet and outlet (41); the diaphragm (31) has a concave structure when stressed and covers the valve body inlet and outlet (41); when the electromagnetic valve (1) is electrified, the diaphragm (31) is not stressed and a separation space is reserved between the diaphragm and the valve body inlet and outlet (41); when the electromagnetic valve (1) is not electrified, the diaphragm (31) is stressed to be extruded downwards and covers the valve body inlet and outlet (41); the valve body inlet and outlet (41) and the diaphragm (31) are of circular structures;
the air source connector (21) is internally embedded with a copper sleeve (23), the upper end of the copper sleeve (23) is provided with external threads, and the valve cover (2) is in threaded connection with the working port (13) of the electromagnetic valve (1) through the copper sleeve (23).
2. A diaphragm valve according to claim 1, characterized in that: the diameter of the diaphragm (31) is larger than or equal to the diameter of the valve body inlet and outlet (41).
3. A diaphragm valve according to claim 2, characterized in that: the lower surface of the diaphragm (31) is provided with an annular first groove (32), the upper surface of the valve body (4) is provided with a corresponding first raised line (42), and the first raised line (42) is positioned at the outer side of the valve body inlet and outlet (41).
4. A diaphragm valve according to claim 2, characterized in that: the upper surface of the diaphragm (31) is provided with an annular second raised line (33), the lower surface of the valve cover (2) is provided with a corresponding second groove (22), and the second groove (22) is positioned at the outer side of the air source interface (21).
5. A diaphragm valve according to any one of claims 1 to 4, wherein: the valve cover (2) and the diaphragm pad (3) are made of rubber materials.
6. A diaphragm valve according to claim 1, characterized in that: the lower extreme of valve body (4) is equipped with 2 material inlets and 1 material export, perhaps is equipped with 1 material inlet and 2 material exports.
7. A diaphragm valve according to claim 1, characterized in that: the valve cover (2), the diaphragm pad (3) and the valve body (4) are connected through matched bolts (5) and nuts (6).
8. A method of delivering a fluid using the diaphragm valve of any of claims 1-7, wherein: the method comprises the following working states:
s1, under the condition that fluid is required to be conveyed, the electromagnetic valve (1) is electrified, and an exhaust port (12) of the electromagnetic valve (1) is opened; the air compressed by the air compression system enters from an air inlet (11) of the electromagnetic valve (1) and is discharged from an air outlet (12) of the electromagnetic valve (1); the cavity between the valve cover (2) and the valve body (4) is in a normal pressure state, the diaphragm pad (3) is in a natural state, a separation space is reserved between the diaphragm pad (3) and the inlet and outlet (41) of the valve body, namely, the diaphragm valve is opened, and fluid can enter the discharge port of the valve body (4) from the feed port of the valve body (4);
s2, under the condition that fluid is not required to be conveyed, the electromagnetic valve (1) is not electrified, and an exhaust port (12) of the electromagnetic valve (1) is closed; air compressed by the air compression system enters the electromagnetic valve (1) from an air inlet (11) of the electromagnetic valve (1) and enters the valve cover (2) from a working port (13) of the electromagnetic valve (1); the cavity between the valve cover (2) and the valve body (4) is in a high-pressure state, the diaphragm pad (3) is pressed downwards under the force and covers the valve body inlet and outlet (41), namely the diaphragm valve is closed, and fluid cannot enter the valve body (4) from the feed inlet of the valve body (4);
s3, when the fluid needs to be conveyed again, the electromagnetic valve (1) is electrified, and an exhaust port (12) of the electromagnetic valve (1) is opened; the air compressed by the air compression system enters from an air inlet (11) of the electromagnetic valve (1) and is discharged from an air outlet (12) of the electromagnetic valve (1); the cavity between the valve cover (2) and the valve body (4) is in a normal pressure state, the diaphragm pad (3) returns to a natural state under the action of self elasticity, namely, the diaphragm pad (3) is separated from the inlet and the outlet (41) of the valve body, namely, the diaphragm valve is opened, and fluid can enter the discharge port of the valve body (4) from the feed port of the valve body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811529004.3A CN109667955B (en) | 2018-12-13 | 2018-12-13 | Diaphragm valve and method for conveying fluid by adopting diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811529004.3A CN109667955B (en) | 2018-12-13 | 2018-12-13 | Diaphragm valve and method for conveying fluid by adopting diaphragm valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109667955A CN109667955A (en) | 2019-04-23 |
| CN109667955B true CN109667955B (en) | 2024-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811529004.3A Active CN109667955B (en) | 2018-12-13 | 2018-12-13 | Diaphragm valve and method for conveying fluid by adopting diaphragm valve |
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| JP2005133767A (en) * | 2003-10-28 | 2005-05-26 | Sekisui Chem Co Ltd | Diaphragm valve |
| CN1751196A (en) * | 2003-02-18 | 2006-03-22 | 株式会社富士金 | Diaphragm valve for vacuum evacuation system |
| CN205504071U (en) * | 2016-02-17 | 2016-08-24 | 粟洪涛 | Atmospheric pressure diaphragm valve |
| CN206234394U (en) * | 2016-11-29 | 2017-06-09 | 新疆巨盛龙环保设备有限公司 | Diaphragm valve |
| CN107747634A (en) * | 2017-11-09 | 2018-03-02 | 新疆巨盛龙环保设备有限公司 | A kind of diaphragm valve and the conveying equipment for fluid substances and its carrying method being made up of the diaphragm valve |
| CN209414680U (en) * | 2018-12-13 | 2019-09-20 | 江西增鑫科技股份有限公司 | A kind of diaphragm valve |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751196A (en) * | 2003-02-18 | 2006-03-22 | 株式会社富士金 | Diaphragm valve for vacuum evacuation system |
| JP2005133767A (en) * | 2003-10-28 | 2005-05-26 | Sekisui Chem Co Ltd | Diaphragm valve |
| CN205504071U (en) * | 2016-02-17 | 2016-08-24 | 粟洪涛 | Atmospheric pressure diaphragm valve |
| CN206234394U (en) * | 2016-11-29 | 2017-06-09 | 新疆巨盛龙环保设备有限公司 | Diaphragm valve |
| CN107747634A (en) * | 2017-11-09 | 2018-03-02 | 新疆巨盛龙环保设备有限公司 | A kind of diaphragm valve and the conveying equipment for fluid substances and its carrying method being made up of the diaphragm valve |
| CN209414680U (en) * | 2018-12-13 | 2019-09-20 | 江西增鑫科技股份有限公司 | A kind of diaphragm valve |
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