CN221054353U - Active reset vacuum diaphragm valve - Google Patents
Active reset vacuum diaphragm valve Download PDFInfo
- Publication number
- CN221054353U CN221054353U CN202322888046.9U CN202322888046U CN221054353U CN 221054353 U CN221054353 U CN 221054353U CN 202322888046 U CN202322888046 U CN 202322888046U CN 221054353 U CN221054353 U CN 221054353U
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- Prior art keywords
- valve
- cavity
- diaphragm
- movable block
- valve body
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- 239000010865 sewage Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000010985 leather Substances 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Sewage (AREA)
Abstract
The active reset vacuum diaphragm valve comprises a hollow valve body and a diaphragm, wherein the valve body comprises a valve seat and a valve cover assembly, the diaphragm is clamped between the valve seat and the valve cover assembly through a bolt connection, an inner cavity of the valve body is divided into a working cavity, a negative pressure cavity and a normal pressure cavity, a sewage inlet and a sewage outlet are respectively arranged at the left end and the right end of the valve body, and a working port is arranged at the top end of the valve body; the valve gap subassembly includes valve gap, compression spring, movable block to and spacing piece, and the valve gap cavity is the tubbiness, and the bottom is open to be the flange form, and the working opening setting is on the valve gap top, and the valve gap inner chamber still symmetry is equipped with two guide cylinders, with movable block both ends round hole clearance fit, two guide cylinder bottoms have spacing piece through the fix with screw, and the restriction movable block can only reciprocate in guide cylinder axial within range, and compression spring pre-compaction sets up between movable block and valve gap. The utility model has the characteristics of simple structure, stability, reliability, good sealing effect and convenient installation and use.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an active reset vacuum diaphragm valve capable of enabling a diaphragm to be actively reset and closed.
Background
The diaphragm valve plays a role of a vacuum drainage pipeline switch in a vacuum drainage system, the development of the vacuum drainage technology in China is late, the localization technology of key parts of many vacuum drainage systems is still immature, certain defects exist, for example, a fully-opened vacuum diaphragm valve is disclosed in Chinese patent document No. CN204533640U, and comprises a valve seat, an opening is arranged on the side surface of the valve seat, a leather cup matched with the opening is arranged on the opening, a jacket is arranged outside the leather cup on the valve seat, the jacket extrudes the periphery of the leather cup, a space formed between the leather cup and the jacket is named as a cavity, a spring is arranged in the cavity, the upper end of the spring is connected with the jacket, and a first pressing block is arranged at the lower end of the spring. The diaphragm valve with the structure is characterized in that a first pressing block arranged at the lower end of the spring is of a cantilever structure, and after the leather cup is sucked and turned over by negative pressure in the cavity, the pressing block is easily caused to sideslip due to the fact that the spring is offset, so that the resetting function of the leather cup is lost; the cup with the structure is sealed with the valve seat and the outer sleeve, and air leakage is easy.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the active reset vacuum diaphragm valve which has the advantages of simple structure, stability, reliability, good sealing effect and convenient installation and use.
The technical scheme adopted for solving the technical problems is as follows: an active reset vacuum diaphragm valve comprises a hollow valve body and a diaphragm, and is structurally characterized in that the valve body comprises a valve seat and a valve cover assembly, and the diaphragm is clamped between the valve seat and the valve cover assembly through bolt connection to divide an inner cavity of the valve body into a working cavity, a negative pressure cavity and a normal pressure cavity; the left and right ends of the valve body are respectively provided with a sewage inlet and a sewage outlet, the top end of the valve body is provided with a working port, the sewage inlet is communicated with the normal pressure cavity, the sewage outlet is communicated with the negative pressure cavity, and the working port is communicated with the working cavity.
Further, the valve cover assembly comprises a valve cover, a compression spring, a movable block and a limiting piece, wherein the valve cover is hollow and in a barrel shape, the bottom end of the valve cover is open and in a flange shape, the working port is arranged at the top end of the valve cover, the inner cavity of the valve cover is symmetrically provided with two guide cylinders which are in clearance fit with round holes at the two ends of the movable block, the bottom ends of the two guide cylinders are fixedly provided with the limiting piece through screws, and the movable block is limited to move up and down only in the axial range of the guide cylinders; the compression spring pre-compaction is set up between movable block and valve gap.
Further, the valve seat is hollow, the top is open and is in a flange shape, the sewage inlet and the sewage outlet are arranged at two ends of the valve seat, the sewage inlet and the sewage outlet can be connected with or adhered to the pipeline in a threaded manner, and the sewage inlet and the sewage outlet can be exchanged.
Further, a sealing strip I with a semicircular section is arranged at the top end of the valve seat along the periphery of the flange and is connected with a sealing strip II in the middle of the inner cavity of the valve seat.
Further, the membrane is in a circular disc shape and is made of rubber or silica gel, and the height-diameter ratio is 1:3-6.
In the utility model, the diaphragm reset is completed by the movable block under the action of the downward elasticity of the compression spring in the valve cover assembly, and the movable block can only linearly move up and down in the axial range of the guide columns under the constraint of the two guide columns, so that the structure is simple, stable and reliable.
In the utility model, the sealing strip I is arranged at the top end of the valve seat along the periphery of the flange and is connected with the sealing strip II in the middle of the inner cavity of the valve seat, so that the diaphragm and the valve seat are in linear seal, the sealing performance is better, and the normal pressure cavity, the negative pressure cavity and the working cavity are mutually independent and isolated from the outside.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
Fig. 1 is a schematic perspective view of an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional view of the embodiment of the present utility model in a closed state.
Fig. 3 is a schematic perspective view of a valve cover assembly.
Fig. 4 is a schematic perspective view of a valve seat.
Fig. 5 is a schematic diagram of a three-dimensional structure of a diaphragm.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to specific embodiments. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.
Referring to fig. 1, 2 and 5, an active reset vacuum diaphragm valve comprises a hollow valve body and a diaphragm 2, wherein the valve body comprises a valve seat 1 and a valve cover assembly, the diaphragm 2 is in a disc shape, is clamped between the valve seat 1 and the valve cover assembly through bolt connection, and divides the inner cavity of the valve body into a working cavity 303, a negative pressure cavity 103 and a normal pressure cavity 104; the left and right ends of the valve body are respectively provided with a sewage inlet 102 and a sewage outlet 101, the top end of the valve body is provided with a working port 301, the sewage inlet is communicated with the normal pressure cavity, the sewage outlet is communicated with the negative pressure cavity, and the working port is communicated with the working cavity.
Referring to fig. 3, the valve cover assembly comprises a valve cover 3, a compression spring 6, a movable block 5 and a limiting piece 4, wherein the valve cover 3 is hollow and barrel-shaped, the bottom end of the valve cover is open and flange-shaped, a working opening 301 is arranged at the top end of the valve cover, two guide cylinders 302 are symmetrically arranged in the inner cavity of the valve cover and are in clearance fit with round holes at the two ends of the movable block 5, the limiting piece 4 is fixed at the bottom end of the two guide cylinders 302 through screws, and the movable block is limited to move up and down only in the axial range of the guide cylinders; the compression spring 6 is preloaded between the movable block 5 and the valve cover 3.
Referring to fig. 4, the valve seat 1 is hollow, the top is opened in a flange shape, the sewage inlet 102 and the sewage outlet 101 are arranged at two ends of the valve seat, the sewage inlet and the sewage outlet can be connected with or adhered to a pipeline through threads, and the sewage inlet and the sewage outlet can be exchanged; the top end of the valve seat 1 is provided with a sealing strip I105 with a semicircular section along the circumference of the flange, and is connected with a sealing strip II 106 in the middle of the inner cavity of the valve seat.
The action process is as follows: the sewage outlet 101 is in butt joint with a vacuum pipeline, the sewage inlet 102 is in butt joint with a sewage suction pipeline, the working port 301 is in butt joint with a vacuum control pipeline, when the working port 301 is in vacuum connection, the diaphragm 2 is made of rubber or silica gel and has flexibility and elasticity, the diaphragm is deformed in a disc shape and is sucked and turned over under the negative pressure effect in the working cavity 303, the movable block 5 is attached, the elasticity of the compression spring 6 is overcome, the movable block is finally pressed to the attached valve cover 3, at the moment, the negative pressure cavity 103 is communicated with the normal pressure cavity 104, the inside of the sewage suction pipeline is under negative pressure, and sewage is sucked to the vacuum pipeline through the sewage suction pipeline; when the working opening 301 is normally pressurized, the working cavity 303 no longer has suction force on the diaphragm 2, the diaphragm is reset under the action of the elastic force of the compression spring 6, and is tightly attached to the sealing strip II 106 in the middle of the inner cavity of the valve seat 1 under the action of negative pressure in the negative pressure cavity 103, so that the negative pressure cavity 103 is isolated from the normal pressure cavity 104.
Claims (5)
1. An active reset vacuum diaphragm valve comprises a hollow valve body and a diaphragm (2), and is characterized in that the valve body comprises a valve seat (1) and a valve cover assembly, the diaphragm (2) is clamped between the valve seat (1) and the valve cover assembly through bolt connection, and an inner cavity of the valve body is divided into a working cavity (303), a negative pressure cavity (103) and a normal pressure cavity (104); the left and right ends of the valve body are respectively provided with a sewage inlet (102) and a sewage outlet (101), the top end of the valve body is provided with a working port (301), the sewage inlet is communicated with the normal pressure cavity, the sewage outlet is communicated with the negative pressure cavity, and the working port is communicated with the working cavity.
2. The active reset vacuum diaphragm valve according to claim 1, wherein the valve cover assembly comprises a valve cover (3), a compression spring (6), a movable block (5) and a limiting piece (4), the valve cover (3) is hollow and barrel-shaped, the bottom end of the valve cover is open and flange-shaped, the working port (301) is arranged at the top end of the valve cover (3), two guide cylinders (302) are symmetrically arranged in the inner cavity of the valve cover and are in clearance fit with round holes at the two ends of the movable block (5), the limiting piece (4) is fixed at the bottom ends of the two guide cylinders (302) through screws, and the movable block is limited to move up and down only in the axial range of the guide cylinders; the compression spring (6) is preloaded and arranged between the movable block (5) and the valve cover (3).
3. An active reset vacuum diaphragm valve according to claim 2, characterized in that the valve seat (1) is hollow, the top opening is flange-shaped, the sewage inlet (102) and the sewage outlet (101) are arranged at two ends of the valve seat, the sewage inlet and the sewage outlet can be connected with or adhered to a pipeline in a threaded manner, and the sewage inlet and the sewage outlet can be exchanged.
4. The active reset vacuum diaphragm valve according to claim 2, wherein a sealing strip I (105) with a semicircular cross section is arranged at the top end of the valve seat (1) along the periphery of the flange and is connected with a sealing strip II (106) in the middle of the inner cavity of the valve seat.
5. The active reset vacuum diaphragm valve according to claim 4, wherein the diaphragm (2) is in a shape of a circular disc and is made of rubber or silica gel, and the height-to-diameter ratio is 1:3-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322888046.9U CN221054353U (en) | 2023-10-27 | 2023-10-27 | Active reset vacuum diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322888046.9U CN221054353U (en) | 2023-10-27 | 2023-10-27 | Active reset vacuum diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221054353U true CN221054353U (en) | 2024-05-31 |
Family
ID=91199697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322888046.9U Active CN221054353U (en) | 2023-10-27 | 2023-10-27 | Active reset vacuum diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221054353U (en) |
-
2023
- 2023-10-27 CN CN202322888046.9U patent/CN221054353U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |