CN220581739U - Hydraulic driven anti-suck-back valve - Google Patents
Hydraulic driven anti-suck-back valve Download PDFInfo
- Publication number
- CN220581739U CN220581739U CN202322312316.1U CN202322312316U CN220581739U CN 220581739 U CN220581739 U CN 220581739U CN 202322312316 U CN202322312316 U CN 202322312316U CN 220581739 U CN220581739 U CN 220581739U
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- China
- Prior art keywords
- valve
- suck
- connecting rod
- back valve
- valve plate
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- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- 230000001502 supplementing effect Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model relates to a hydraulic-driven anti-suck-back valve, and belongs to the technical field of liquid sealing devices. The utility model provides a hydraulic-driven anti-suck-back valve which is connected with an absorption device storing absorption liquid, wherein the outer wall of the anti-suck-back valve comprises a gas supplementing port, an inlet flange and an outlet flange which are sequentially arranged from top to bottom; the inside horizontal valve port that is in including setting up between the air make-up mouth with the entry flange, valve port top lid is equipped with the valve plate, valve plate fixedly connected with is from top to bottom run through the connecting rod of valve plate, the spring is installed to the connecting rod upper end, the floater is connected to the connecting rod lower extreme, the spring both ends are connected respectively the valve plate with the inside roof of anti-suck-back valve. The utility model utilizes the rising liquid level to drive the floating ball and the connecting rod to open the valve for supplementing air, thereby balancing the gas phase, solving the problem of back suction, simplifying the transmission structure, reducing the volume of the equipment, saving extra energy supply, saving and protecting the environment.
Description
Technical Field
The utility model relates to a hydraulic-driven anti-suck-back valve, and belongs to the technical field of liquid sealing devices.
Background
In chemical production, a liquid-sealed absorbing tank is generally used to isolate and absorb volatile gases, for example, in the application of a liquid ammonia storage tank, the liquid-sealed absorbing tank is required to absorb ammonia. Currently, existing equipment is usually used for absorbing ammonia by inserting a gas phase pipeline with ammonia below the water surface in a liquid seal absorption tank.
However, because ammonia is very soluble in water, the ammonia in the pipeline is often caused to form negative pressure after being absorbed, so that a part of liquid in the liquid seal absorption tank is sucked back to the gas-phase pipeline, and even when serious, the phenomenon that the water in the liquid seal absorption tank is sucked back into the liquid ammonia storage tank is generated, so that unavoidable pollution is caused.
Currently, the traditional solution to the problem is to make a tear hole above the liquid level of a gas-phase pipeline, but the liquid level of a liquid seal absorption tank is required to be strictly controlled at a preset position in this way, if the liquid level is higher than the tear hole position due to incorrect field operation, the tear hole will fail, and the liquid seal effect will be poor due to the fact that the liquid level is too low; meanwhile, irregular behavior of the tear hole can also have certain influence, for example, the effect of downward insertion and absorption and the strength of a pipeline are easily influenced when the tear hole is too large, and blockage is easily caused or the protection effect cannot be achieved when the tear hole is too small.
In addition, for example, a safety liquid sealing device of CN204568520U and a sodium bicarbonate preparation device of CN115738463a, although both of them are provided with a certain anti-suck-back means, both of them adopt a larger equipment volume, and there are problems of large occupied space, high cost and complex construction, and applicability is limited.
Disclosure of Invention
In order to solve the problems, the utility model provides a hydraulic-driven anti-suck-back valve which is connected with an absorption device containing absorption liquid, wherein the outer wall of the anti-suck-back valve comprises a gas supplementing port, an inlet flange and an outlet flange which are sequentially arranged from top to bottom; the inside horizontal valve port that is in including setting up between the air make-up mouth with the entry flange, valve port top lid is equipped with the valve plate, valve plate fixedly connected with is from top to bottom run through the connecting rod of valve plate, the spring is installed to the connecting rod upper end, the floater is connected to the connecting rod lower extreme, the spring both ends are connected respectively the valve plate with the inside roof of anti-suck-back valve.
It will be appreciated that the outlet flange should be disposed towards the absorption liquid, the level of which should be at the horizontal level; in the present utility model, the vertical direction away from the absorbent is "up", and the vertical direction close to the absorbent is "down"; the term "vertical direction" refers to a direction perpendicular to the horizontal plane; the links should be arranged perpendicular to the horizontal plane.
Under normal working conditions, the gas phase has an inlet flange to enter the anti-suck-back valve and is discharged through an outlet flange. When the liquid level of the absorption liquid rises, the absorption liquid firstly enters the anti-suck-back valve; when the liquid level reaches the height position of the floating ball and continuously rises, the floating ball is jacked up, so that the floating ball drives the valve plate to move upwards through the connecting rod and compresses the spring upwards, meanwhile, the valve port is opened, air or other protective gas can enter the anti-suck-back valve through the air supplementing port and the valve port in sequence and balance gas phase, the liquid level is lowered, and the floating ball also descends to return and closes the valve plate under the reset action of the spring.
Further, the floating ball is positioned between the inlet flange and the outlet flange; and a steel net groove is further formed between the inlet flange and the outlet flange, and the floating ball is positioned in the steel net groove.
In one embodiment of the utility model, the steel mesh tank comprises a cylindrical tank, and the floating ball is positioned in the cylindrical tank and can be limited by the cylindrical tank.
It is understood that the steel net groove plays a limiting role, and can limit the floating ball to do up-down linear motion in a limited vertical height space, so that the floating ball is prevented from shifting in the motion direction due to uneven stress; in addition, the steel net groove can also filter suspended matters and particulate matters in the absorption liquid, and the floating ball and the valve plate are protected from being blocked and failed.
In one embodiment of the utility model, the back-suction valve housing and its internal components may be selected from stainless steel, carbon steel or non-metallic materials (e.g., PP, PVC or fluoroplastic, etc.) depending on the material characteristics.
Further, a limiting space is formed in the top wall inside the anti-suck-back valve, and the limiting space can limit the linear motion of the connecting rod in the up-down direction.
The utility model has the beneficial effects that:
1. the utility model utilizes the rising liquid level to drive the floating ball and the connecting rod to open the valve for supplementing air, thereby balancing the gas phase, solving the problem of back suction, simplifying the transmission structure, reducing the volume of the equipment, saving extra energy supply, saving and protecting the environment.
2. The valve provided by the utility model can return automatically under the action of the spring, so that the problems of blockage and the like of the tear holes in the traditional valve are avoided, and strict position accuracy requirements are not required.
3. According to the utility model, air or protective gas can be taken in through the air supplementing port, and inert gas can be further stored in the absorption device according to actual needs, so that the safety is improved.
4. The utility model provides a standard valve component of a suck-back prevention device, which is convenient to uniformly use in the design stage or actual engineering under the working conditions.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model.
In the figure, 1: anti-suck-back valve, 2: spacing space, 3: and (4) an air supplementing port: inlet flange, 5: outlet flange, 6: valve port, 7: valve plate, 8: connecting rod, 9: floating ball, 10: spring, 11: steel mesh tank.
Detailed Description
Example 1
As shown in fig. 1, the present utility model provides a hydraulically driven anti-suck-back valve 1, which is connected to an absorbing device (below an outlet flange 5, not shown in the drawing) with absorbing liquid under, wherein the outer wall of the anti-suck-back valve 1 includes a gas compensating port 3, an inlet flange 4 and an outlet flange 5 sequentially arranged from top to bottom; the inside horizontal valve port 6 that is in including setting up between the air make-up mouth 3 with the entry flange 4 of preventing suck-back valve 1, valve port 6 top lid is equipped with valve plate 7, valve plate 7 fixedly connected with is from last to running through the connecting rod 8 of valve plate 7 down, spring 10 is installed to connecting rod 8 upper end, floater 9 is connected to connecting rod 8 lower extreme, spring 10 both ends are connected respectively valve plate 7 with the inside roof of prevent suck-back valve 1.
The floating ball 9 is positioned between the inlet flange 4 and the outlet flange 5, a steel net groove 11 is further arranged between the inlet flange 4 and the outlet flange 5, and the floating ball 9 is positioned in the steel net groove 11; the steel net groove 11 comprises a columnar groove, and the floating ball 9 is positioned in the columnar groove and can be limited by the columnar groove, so that the floating ball 9 is prevented from deviating in the movement direction due to uneven stress; in addition, the steel mesh tank 11 can also filter suspended matters and particulate matters in the absorption liquid, and protect the floating ball 9 and the valve plate 7 from being blocked and failed.
The top wall inside the anti-suck-back valve 1 is provided with a limiting space 2, and the limiting space 2 can limit the linear motion of the upper end of the connecting rod 8 in the up-down direction.
Under normal working conditions, the gas phase enters the anti-suck-back valve 1 through an inlet flange 4 and is discharged through an outlet flange 5. When the liquid level of the absorption liquid rises, the absorption liquid firstly enters the anti-suck-back valve 1; when the liquid level reaches the height position of the floating ball 9 and continuously rises, the floating ball 9 is jacked up, so that the floating ball 9 drives the valve plate 7 to move upwards through the connecting rod 8 and compresses the spring 10 upwards, and meanwhile, the valve port 6 is opened, air or other protective gas can enter the anti-suck-back valve 1 through the air supplementing port 3 and the valve port 6 in sequence and balance gas phase, the liquid level is lowered, and the floating ball 9 also descends to return and closes the valve plate 7 under the reset action of the spring 10.
While the utility model has been described with reference to the preferred embodiments, it is not limited thereto, and various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (5)
1. The hydraulic driven anti-suck-back valve is connected with an absorption device storing absorption liquid, and is characterized in that the outer wall of the anti-suck-back valve comprises a gas supplementing port, an inlet flange and an outlet flange which are sequentially arranged from top to bottom; the inside horizontal valve port that is in including setting up between the air make-up mouth with the entry flange, valve port top lid is equipped with the valve plate, valve plate fixedly connected with is from top to bottom run through the connecting rod of valve plate, the spring is installed to the connecting rod upper end, the floater is connected to the connecting rod lower extreme, the spring both ends are connected respectively the valve plate with the inside roof of anti-suck-back valve.
2. A hydraulically actuated anti-suck-back valve as claimed in claim 1, wherein said float ball is in a position between said inlet flange and said outlet flange.
3. The hydraulically driven anti-suck-back valve of claim 2, wherein a steel mesh groove is further provided between the inlet flange and the outlet flange, and the float ball is positioned in the steel mesh groove.
4. A hydraulically actuated anti-suck-back valve as claimed in claim 3 wherein said steel mesh tank comprises a cylindrical tank and said float ball is positioned within and can be restrained by said cylindrical tank.
5. The hydraulically driven anti-suck-back valve of claim 1, wherein a top wall inside the anti-suck-back valve is provided with a limit space, and the limit space can limit the linear motion of the connecting rod in the up-down direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322312316.1U CN220581739U (en) | 2023-08-28 | 2023-08-28 | Hydraulic driven anti-suck-back valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322312316.1U CN220581739U (en) | 2023-08-28 | 2023-08-28 | Hydraulic driven anti-suck-back valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220581739U true CN220581739U (en) | 2024-03-12 |
Family
ID=90107263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322312316.1U Active CN220581739U (en) | 2023-08-28 | 2023-08-28 | Hydraulic driven anti-suck-back valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220581739U (en) |
-
2023
- 2023-08-28 CN CN202322312316.1U patent/CN220581739U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |