CN204611053U - The membrane valve of low-pressure opening - Google Patents
The membrane valve of low-pressure opening Download PDFInfo
- Publication number
- CN204611053U CN204611053U CN201520182307.8U CN201520182307U CN204611053U CN 204611053 U CN204611053 U CN 204611053U CN 201520182307 U CN201520182307 U CN 201520182307U CN 204611053 U CN204611053 U CN 204611053U
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- port
- valve
- control chamber
- low
- pressure opening
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- Withdrawn - After Issue
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- 239000012528 membrane Substances 0.000 title claims abstract description 64
- 230000004888 barrier function Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 230000008676 import Effects 0.000 claims description 8
- 230000010412 perfusion Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000002262 irrigation Effects 0.000 description 5
- 238000003973 irrigation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 210000000936 intestine Anatomy 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Fluid-Driven Valves (AREA)
Abstract
The utility model provides a kind of membrane valve of low-pressure opening.According to the membrane valve of low-pressure opening of the present utility model, comprising: valve body, valve body is provided with the entrance cavity and outlet plenum that are connected; Valve gap, is arranged on valve body; Sealing seat, is arranged between entrance cavity and outlet plenum; Barrier film, is arranged between valve body and valve gap, forms the first control chamber between barrier film and valve gap; Valve pocket seat, is arranged in valve body, and form the second control chamber between barrier film and valve pocket seat, barrier film is connected with main valve disc by valve rod, and valve pocket cover for seat is located on valve rod, main valve disc and sealing seat fitted seal; Waterway converter, it is positioned at the outside of valve body, and waterway converter is connected with entrance cavity with the first control chamber, the second control chamber respectively.By the first control chamber, the second control chamber being connected with waterway converter with entrance cavity, controlling the perfusion of the first control chamber and the second control chamber and emptying action, under low pressure operating mode, realizing membrane valve and opening or close, improving membrane valve current and pass through efficiency.
Description
Technical field
The utility model relates to membrane valve field, especially, relates to a kind of membrane valve of low-pressure opening.
Background technique
At present, membrane valve is connected on compression piece with a flexible diaphragm, and compression piece is operated by valve rod and moves up and down, and when compression piece rises, diaphragm is just held high, forms path, and when compression piece declines, diaphragm is just pressed on valve body, valve closing.This valve is applicable to cut-off, throttling.
In field irrigation, the hydraulic pressure of irrigation water is generally about 1400kP, and because hydraulic pressure is lower, existing membrane valve cannot realize opening or opening not exclusively, causes field irrigation inefficiency.
Model utility content
The utility model object is the membrane valve providing a kind of low-pressure opening, to solve the technical problem that membrane valve cannot be opened because hydraulic pressure is low or opens the inefficiency not exclusively caused.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
The utility model provides a kind of membrane valve of low-pressure opening, comprises valve body, and valve body is provided with the entrance cavity and outlet plenum that are connected; Valve gap, is arranged on valve body; Sealing seat, is arranged between entrance cavity and outlet plenum; Barrier film, is arranged between valve body and valve gap, forms the first control chamber between barrier film and valve gap; Valve pocket seat, is arranged in valve body, and form the second control chamber between barrier film and valve pocket seat, barrier film is connected with main valve disc by valve rod, and valve pocket cover for seat is located on valve rod, main valve disc and sealing seat fitted seal; Waterway converter, it is positioned at the outside of valve body, and waterway converter is connected with entrance cavity with the first control chamber, the second control chamber respectively.
Further, the membrane valve of low-pressure opening also comprises micropump, and micropump is connected with the first control chamber or the second control chamber by waterway converter.
Further, the membrane valve of low-pressure opening also comprises water flow generator, and the import of water flow generator is connected with entrance cavity.
Further, the outlet of water flow generator is connected with outlet plenum.
Further, control switch is provided with between the import of water flow generator and entrance cavity.
Further, control switch is provided with between the import of water flow generator and entrance cavity.
Further, the both sides of barrier film are provided with drive plate, and drive plate is set on valve rod.
Further, waterway converter comprises housing and is slidably disposed on the conversion body in housing; The side of housing is provided with the first port and the second port, and its opposite side is provided with the 3rd port and the 4th port, and the first port is connected with entrance cavity, and the 3rd port is connected with the first control chamber, and the 4th port is connected with the second control chamber; Two second channels being provided with two first passages arranged in a crossed manner in conversion body and be arranged in parallel, under the state that the first port to be connected with the 4th port by first passage and the second port is connected with the 3rd port by another first passage, main valve disc and sealing seat are separated; Under the state that the first port to be connected with the 3rd port by second channel and the second port is connected with the 4th port by another second channel, main valve disc and sealing seat seal fits.
Further, the waterway converter conversion body that comprises housing and be arranged on rotationally in housing; Housing is provided with the first port, the second port, the 3rd port and the 4th port, first port and the second port are oppositely arranged, 3rd port and the 4th port are oppositely arranged, first port is connected with entrance cavity, 3rd port is connected with the first control chamber, and the 4th port is connected with the second control chamber; Be provided with two arc third channels diametrically in conversion body, under the state that the first port and the 4th port and the second port and the 3rd port are connected respectively by two arc third channels, main valve disc and sealing seat are separated; Under the state that the first port and the 3rd port and the second port and the 4th port are connected respectively by two arc third channels, main valve disc and sealing seat seal fits.
Further, waterway converter also comprises drive screw, and drive screw drives with conversion body and is connected.
Feature of the present utility model and advantage are:
By the first control chamber of valve body, the second control chamber are connected with waterway converter respectively with entrance cavity, control the perfusion of the first control chamber and the second control chamber and emptying action, under low pressure operating mode, realize unlatching or the closedown of membrane valve, the current improving membrane valve pass through efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is first embodiment's schematic diagram of the membrane valve of low-pressure opening of the present utility model;
Fig. 2 is second embodiment's schematic diagram of the membrane valve of low-pressure opening of the present utility model;
Fig. 3 is the 3rd embodiment's schematic diagram of the membrane valve of low-pressure opening of the present utility model;
Fig. 4 is the 4th embodiment's schematic diagram of the membrane valve of low-pressure opening of the present utility model;
Fig. 5 is the schematic diagram of the first embodiment of the waterway converter of the membrane valve of low-pressure opening of the present utility model, and now membrane valve is in opening state;
Fig. 6 is the schematic diagram of the first embodiment of the waterway converter of the membrane valve of low-pressure opening of the present utility model, and now membrane valve is in closed condition;
Fig. 7 is the schematic diagram of the second embodiment of the waterway converter of the membrane valve of low-pressure opening of the present utility model, and now membrane valve is in opening state;
Fig. 8 is the schematic diagram of the second embodiment of the waterway converter of the membrane valve of low-pressure opening of the present utility model, and now membrane valve is in closed condition;
Fig. 9 is the schematic diagram of the 3rd embodiment of the waterway converter of the membrane valve of low-pressure opening of the present utility model, and now membrane valve is in opening state; And
Figure 10 is the schematic diagram of the 3rd embodiment of the waterway converter of the membrane valve of low-pressure opening of the present utility model, and now membrane valve is in closed condition.
Reference character in accompanying drawing is as follows: 10, valve body; 11, entrance cavity; 12, outlet plenum; 13, valve gap; 14, sealing seat; 15, valve pocket seat; 21, barrier film; 22, valve rod; 23, main valve disc; 24, drive plate; 31, the first control chamber; 32, the second control chamber; 40, micropump; 50, waterway converter; 51, conversion body; 511, first passage; 512, second channel; 513, third channel; 521, the first port; 522, the second port; 523, the 3rd port; 524, the 4th port; 53, drive screw; 54, housing; 60, water flow generator; 61, control switch; 62, control module.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of membrane valve of low-pressure opening, comprises valve body 10, and valve body 10 is provided with the entrance cavity 11 and outlet plenum 12 that are connected; Valve gap 13, is arranged on valve body 10; Sealing seat 14, is arranged between entrance cavity 11 and outlet plenum 12; Barrier film 21, is arranged between valve body 10 and valve gap 13, forms the first control chamber 31 between barrier film 21 and valve gap 13; Valve pocket seat 15, valve pocket seat 15 is arranged in valve body 10, and form the second control chamber 32 between barrier film 21 and valve pocket seat 15, barrier film 21 is connected with main valve disc 23 by valve rod 22, and valve pocket seat 15 is set on valve rod 22, main valve disc 23 and sealing seat 14 fitted seal; Waterway converter 50, it is positioned at the outside of valve body 10, and waterway converter 50 is connected with entrance cavity 11 with the first control chamber 31, second control chamber 32 respectively.
According to an embodiment of the present utility model, the both sides of barrier film 21 are provided with drive plate 24, and drive plate 24 is set on valve rod 22, and drive plate 24 can ensure the join strength of valve rod 22 and barrier film 21.When membrane valve opened by needs, adjustment waterway converter 50, the entrance cavity 11 of valve body 10 is connected with the second control chamber 32 by waterway converter 50, and the first control chamber 31 is connected with external equipment by waterway converter 50, and this external equipment can be water reservoir or other connecting pipelines.The liquid poured into from entrance cavity 11 flows in the second control chamber 32 through waterway converter 50, liquid now in the first control chamber 31 is exported outside valve body 10 by waterway converter 50, barrier film 21 with the increase of the second control chamber 32 volume to the first control chamber 31 1 lateral movement, its band ovable valve stem 22 and main valve disc 23 depart from sealing seat 14, now the entrance cavity 11 of valve body 10 is connected with outlet plenum 12, and this membrane valve is opened, when membrane valve closed by needs, adjustment waterway converter 50, the entrance cavity 11 of valve body 10 is connected with the first control chamber 31 by waterway converter 50, second control chamber 32 is connected with external equipment by waterway converter 50, the liquid poured into from entrance cavity 11 flows in the first control chamber 31 through waterway converter 50, liquid now in the second control chamber 32 is by deriving outside valve body 10 in waterway converter 50, barrier film 21 with the increase of the first control chamber 31 volume to the second control chamber 32 1 lateral movement, its band ovable valve stem 22 and main valve disc 23 are tightly connected with sealing seat 14 and coordinate, now the entrance cavity 11 of valve body 10 and outlet plenum 12 are isolated, this membrane valve is closed.
The membrane valve of low-pressure opening of the present utility model, by arranging waterway converter 50, the liquid flowing through valve body 10 entrance cavity 11 is made to inject in the first control chamber 31 or the second control chamber 32 respectively, thus control finding time and pouring into operation of the first control chamber 31 or the second control chamber 32, and then reach and impel barrier film 21 to move, to be with ovable valve stem 22 and main valve disc 23 to depart from or gluing, sealing seat 14, control being communicated with of entrance cavity 11 and outlet plenum 12, to make membrane valve realize opening when low pressure.The membrane valve of low-pressure opening of the present utility model, for the membrane valve applied in a kind of field irrigation, its can when non-water flow pressure or water flow pressure very little, by waterway converter 50, barrier film 21 is opened, to make field current smoothly by the membrane valve of this low-pressure opening.
Particularly, as shown in Fig. 5 to Fig. 8, waterway converter 50 of the present utility model is made up of housing 54 and the conversion body 51 be slidably disposed in housing 54, conversion body 51 is ceramic conversion body, its side is connected with drive screw 53, wherein, housing 54 and the conversion body 51 of waterway converter 50 are cuboid shape, the side of housing 54 is provided with the first port 521 and the second port 522, its opposite side is provided with the 3rd port 523 and the 4th port 524, first port 521 is connected with entrance cavity 11, second port 522 is emptying (such as, as shown in Figure 2, second port 522 can be connected with micropump 40, assist emptying by micropump 40 and can intestine evacuation velocity be increased), 3rd port 523 is connected with the first control chamber 31, 4th port 524 is connected with the second control chamber 32, two second channels 512 being provided with two first passages 511 arranged in a crossed manner in conversion body 51 and be arrangeding in parallel.When membrane valve opened by needs, rotating drive screw rod 53, it is made linearly to drive conversion body 51 to slide in housing 54, when two first passages 511 of conversion body 51 are communicated with the first port 521 and the 4th port 524 respectively, and second port 522 and the 3rd port 523 state under, now, in valve body 10 entrance cavity 11, the first port 521 through housing 54 enters by the current of perfusion, the 4th port 524 is flowed into by first passage 511, and then flow in the second control chamber 32, second control chamber 32 volume is increased, and the liquid in the first control chamber 31 can enter the 3rd port 523 of housing 54, the second port 522 is flowed into by another first passage 511 of conversion body 51, by the second port 522 by current exits valve body 10, in the process, barrier film 21 by the increase along with the second control chamber 32 volume to the first control chamber 31 1 lateral movement, barrier film 21 is with ovable valve stem 22 and main valve disc 23 to move, main valve disc 23 and sealing seat 14 are departed from, realize the unlatching of membrane valve, when membrane valve closed by needs, rotating drive screw rod 53, it is made linearly to drive conversion body 51 to slide in housing 54, when two second channels 512 of conversion body 51 are communicated with the first port 521 and the 3rd port 523 respectively, and second port 522 and the 4th port 524 state under, now, the first port 521 through housing 54 enters by the current in valve body 10 entrance cavity 11, the 3rd port 523 is flowed into by second channel 512, and then flow in the first control chamber 31, the volume of the first control chamber 31 is increased, and the liquid in the second control chamber 32 can enter the 4th port 524 of housing 54, the second port 522 is flowed into by another second channel 512 of conversion body 51, by the second port 522, current are discharged, in the process, barrier film 21 by the increase along with the first control chamber 31 volume to the second control chamber 32 1 lateral movement, barrier film 21 is with ovable valve stem 22 and main valve disc 23 to move, make main valve disc 23 and sealing seat 14 gluing, sealing, realize the closedown of membrane valve.
Embodiment shown in Fig. 5 with Fig. 6 is substantially identical with the 26S Proteasome Structure and Function of the embodiment shown in Fig. 7 with Fig. 8, and difference is just that the glide direction of conversion body 51 in housing 54 is different.In the embodiment shown in Fig. 5 and Fig. 6, conversion body 51 linearly slides in the substantially horizontal of housing 54; In the embodiment shown in Fig. 7 and Fig. 8, conversion body 51 linearly slides on the vertical direction of housing 54.Conversion body 51 linearly to-and-fro motion in housing 54 under the driving of drive screw 53 during Fig. 5 is extremely embodiment illustrated in fig. 8, drive screw 53 is all driven by motor, can accurately control its motion speed and movement position by controller.
As shown in Figure 9 and Figure 10, in another embodiment of the present utility model, this waterway converter 50 is made up of housing 54 and the conversion body 51 be arranged on rotationally in housing 54, and the middle part of conversion body 51 is connected with drive screw 53, and this drive screw 53 can drive conversion body 51 to rotate in housing 54.Wherein, the housing 54 of waterway converter 50 is cylindrical with conversion body 51, the housing 54 of waterway converter 50 is provided with the first port 521, second port 522, 3rd port 523 and the 4th port 524, first port 521, second port 522, 3rd port 523 and the 4th port 524 are arranged on circumferentially same, first port 521 and the second port 522 are oppositely arranged, 3rd port 523 and the 4th port 524 are oppositely arranged, first port 521 is connected with entrance cavity 11, second port 522 is emptying (such as, as shown in Figure 2, second port 522 can be connected with micropump 40, assist emptying by micropump 40 and can intestine evacuation velocity be increased), 3rd port 523 is connected with the first control chamber 31, 4th port 524 is connected with the second control chamber 32, be provided with in conversion body 51 that two arc third channels diametrically, 513, two arc third channels 513 are simultaneously recessed to be symmetrical arranged to conversion body 51 rotation axis.Working principle, the process of the working principle of the waterway converter 50 in this embodiment, process and the waterway converter 50 in above-described embodiment are identical, do not repeat them here.
As shown in Figure 3,4, in another embodiment of the present utility model, its structure with the membrane valve of the low-pressure opening of above-described embodiment, working principle are substantially identical, difference is, the membrane valve of this low-pressure opening also comprises water flow generator 60, and the import of water flow generator 60 is connected with entrance cavity 11.Specifically, be provided with control switch 61 between the import of water flow generator 60 and entrance cavity 11, this control switch 61 controls it by a control module 62 and opens or cut out, and then controls unlatching or the closedown of water flow generator 60.After the membrane valve of low-pressure opening is opened, open control switch 61, the partially liq flowed in entrance cavity 11 can flow through water flow generator 60, water flow generator 60 is generated electricity, the electric energy that this water flow generator 60 sends can provide the electricity consumption of other device in field irrigation to use, the use of this water flow generator 60, further increases the utilization ratio of current in field irrigation.Further, the outlet of water flow generator 60 can be connected with outlet plenum 12, to make the water after flowing through water flow generator 60 be back in membrane valve, utilizes the Water Sproading after generating.Certainly, in other examples, the outlet of this water flow generator 60 also can be connected to outside membrane valve carries out emptying process, or be connected to multiple outlet by multiple one-way valve and carry out emptying, or for the membrane valve of multiple exit, the outlet of this water flow generator 60 can be connected to the downstream position of the membrane valve do not opened or opening, and irrigates use to provide multipath stream current.
The foregoing is only several embodiment of the present utility model, those skilled in the art can carry out various change or modification to the utility model embodiment according to content disclosed in application documents and not depart from spirit and scope of the present utility model.
Claims (10)
1. a membrane valve for low-pressure opening, is characterized in that, comprising:
Valve body (10), described valve body (10) is provided with the entrance cavity (11) and outlet plenum (12) that are connected;
Valve gap (13), is arranged on described valve body (10);
Sealing seat (14), is arranged between described entrance cavity (11) and described outlet plenum (12);
Barrier film (21), is arranged between described valve body (10) and described valve gap (13), forms the first control chamber (31) between described barrier film (21) and described valve gap (13);
Valve pocket seat (15), be arranged in described valve body (10), the second control chamber (32) is formed between described barrier film (21) and described valve pocket seat (15), described barrier film (21) is connected with main valve disc (23) by valve rod (22), described valve pocket seat (15) is set on described valve rod (22), described main valve disc (23) and described sealing seat (14) fitted seal;
Waterway converter (50), it is positioned at the outside of described valve body (10), and described waterway converter (50) is connected with described entrance cavity (11) with described first control chamber (31), described second control chamber (32) respectively.
2. the membrane valve of low-pressure opening according to claim 1, it is characterized in that, also comprise micropump (40), described micropump (40) is connected with described first control chamber (31) or described second control chamber (32) by described waterway converter (50).
3. the membrane valve of low-pressure opening according to claim 1 and 2, is characterized in that, also comprises water flow generator (60), and the import of described water flow generator (60) is connected with described entrance cavity (11).
4. the membrane valve of low-pressure opening according to claim 3, is characterized in that, the outlet of described water flow generator (60) is connected with described outlet plenum (12).
5. the membrane valve of low-pressure opening according to claim 3, is characterized in that, is provided with control switch (61) between the import of described water flow generator (60) and described entrance cavity (11).
6. the membrane valve of low-pressure opening according to claim 4, is characterized in that, is provided with control switch (61) between the import of described water flow generator (60) and described entrance cavity (11).
7. the membrane valve of low-pressure opening according to claim 1, is characterized in that, the both sides of described barrier film (21) are provided with drive plate (24), and described drive plate (24) is set on described valve rod (22).
8. the membrane valve of low-pressure opening according to claim 1, is characterized in that, described waterway converter (50) comprises housing (54) and is slidably disposed on the conversion body (51) in housing (54); The side of described housing (54) is provided with the first port (521) and the second port (522), its opposite side is provided with the 3rd port (523) and the 4th port (524), described first port (521) is connected with described entrance cavity (11), described 3rd port (523) is connected with described first control chamber (31), and described 4th port (524) is connected with described second control chamber (32); Two second channels (512) being provided with two first passages (511) arranged in a crossed manner in described conversion body (51) and be arrangeding in parallel, under the state that described first port (521) to be connected with the 4th port (524) by described first passage (511) and described second port (522) is connected with described 3rd port (523) by first passage described in another (511), described main valve disc (23) and described sealing seat (14) are separated; Under the state that described first port (521) to be connected with described 3rd port (523) by described second channel (512) and described second port (522) is connected with described 4th port (524) by second channel described in another (512), described main valve disc (23) and described sealing seat (14) seal fits.
9. the membrane valve of low-pressure opening according to claim 1, is characterized in that, described waterway converter (50) comprises housing (54) and is arranged on the conversion body (51) in housing (54) rotationally, described housing (54) is provided with the first port (521), second port (522), 3rd port (523) and the 4th port (524), described first port (521) and described second port (522) are oppositely arranged, described 3rd port (523) and the 4th port (524) are oppositely arranged, described first port (521) is connected with described entrance cavity (11), described 3rd port (523) is connected with described first control chamber (31), described 4th port (524) is connected with described second control chamber (32), two arc third channels (513) are diametrically provided with in described conversion body (51), under the state that described first port (521) and described 4th port (524) and described second port (522) and described 3rd port (523) are connected respectively by two arc third channels (513), described main valve disc (23) and described sealing seat (14) are separated, under the state that described first port (521) and described 3rd port (523) and described second port (522) and described 4th port (524) are connected respectively by two arc third channels (513), described main valve disc (23) and described sealing seat (14) seal fits.
10. the membrane valve of low-pressure opening according to claim 8 or claim 9, it is characterized in that, described waterway converter (50) also comprises drive screw (53), and described drive screw (53) drives with described conversion body (51) and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182307.8U CN204611053U (en) | 2015-03-27 | 2015-03-27 | The membrane valve of low-pressure opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182307.8U CN204611053U (en) | 2015-03-27 | 2015-03-27 | The membrane valve of low-pressure opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204611053U true CN204611053U (en) | 2015-09-02 |
Family
ID=53963620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520182307.8U Withdrawn - After Issue CN204611053U (en) | 2015-03-27 | 2015-03-27 | The membrane valve of low-pressure opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204611053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747780A (en) * | 2015-03-27 | 2015-07-01 | 张凡 | Low-pressure opening diaphragm valve |
| CN118602129A (en) * | 2024-08-08 | 2024-09-06 | 浙江永冠阀门有限公司 | Knife gate valve with suction and exhaust functions |
-
2015
- 2015-03-27 CN CN201520182307.8U patent/CN204611053U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747780A (en) * | 2015-03-27 | 2015-07-01 | 张凡 | Low-pressure opening diaphragm valve |
| CN118602129A (en) * | 2024-08-08 | 2024-09-06 | 浙江永冠阀门有限公司 | Knife gate valve with suction and exhaust functions |
| CN118602129B (en) * | 2024-08-08 | 2025-01-14 | 浙江永冠阀门有限公司 | Knife gate valve with suction and exhaust function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20170721 |