CN211288876U - Check valve for pipeline type proportional mixer - Google Patents
Check valve for pipeline type proportional mixer Download PDFInfo
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- CN211288876U CN211288876U CN201921910221.7U CN201921910221U CN211288876U CN 211288876 U CN211288876 U CN 211288876U CN 201921910221 U CN201921910221 U CN 201921910221U CN 211288876 U CN211288876 U CN 211288876U
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- valve body
- valve core
- foam liquid
- fixing sleeve
- valve
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Abstract
The utility model relates to a check valve for a pipeline type proportional mixer, which comprises an upper valve body, a foam liquid suction inlet, a foam liquid outlet, a rubber sealing ring, a valve core fixing sleeve, a sealing ring and a lower valve body; the upper valve body is connected with the lower valve body through threads, the ports of the upper valve body and the lower valve body are respectively provided with a foam liquid suction inlet and a foam liquid outlet, a rubber sealing ring is embedded in the upper valve body (1) close to the foam liquid suction inlet, a positioning groove is turned inside the lower valve body, a valve core fixing sleeve is placed in the positioning groove, the valve core is installed on the valve core fixing sleeve and slides up and down freely, a liquid flow passage is reserved between the valve core and the valve core fixing sleeve, the device pushes the valve core to float up by using directional pressure, so that the valve core and the sealing ring are extruded to achieve the purpose of preventing the water of the pipeline type proportioner from flowing back to a foam liquid storage tank, and the device is in a normally open state under the normal state, so that the suction force generated by the pipeline type proportioner does not need to overcome the gravity of the valve core of the check device to apply work, greatly increasing the efficiency of absorbing the foam stock solution.
Description
Technical Field
The utility model belongs to the technical field of the fire-fighting equipment technique and specifically relates to a check valve for pipeline formula proportioner.
Background
The pipeline type proportional mixer is a proportional mixing device which automatically sucks foam liquid by utilizing the Venturi tube principle to mix the foam liquid with water according to a certain proportion, and the non-return device is a key device for preventing the water from flowing backwards into the foam liquid storage tank. Most pipeline type proportional mixing devices in the market adopt a transmission swing check valve as a check device, but because foam liquid passing through a medium has certain corrosivity, a valve core check valve is generally made of stainless steel, and the check valve is normally in a closed state, so that most of suction force generated by the pipeline type proportional mixer needs to be used for overcoming the condition of opening the valve core of the check valve, the suction force for sucking the foam liquid is reduced, and the mixing ratio of the foam stock solution and water of the pipeline type proportional mixer is greatly influenced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims at overcoming the not enough of prior art, the utility model provides a check valve for pipeline formula proportioner solves above-mentioned problem.
(II) technical scheme
The technical scheme of the utility model: a check valve for a pipeline type proportional mixer comprises an upper valve body, a foam liquid suction inlet, a foam liquid outlet, a rubber sealing ring, a valve core fixing sleeve, a sealing ring, a liquid overflowing channel and a lower valve body; wherein: the upper valve body is in threaded connection with the lower valve body, a foam liquid suction inlet and a foam liquid outlet are respectively arranged at the port parts of the upper valve body and the lower valve body, a rubber sealing ring is embedded in the upper valve body close to the foam liquid suction inlet, a positioning groove is turned inside the lower valve body, a valve core fixing sleeve is placed in the positioning groove, the valve core is installed on the valve core fixing sleeve and freely slides up and down, and a liquid overflowing channel is reserved between the valve core and the valve core fixing sleeve.
The valve body of the non-return device for the pipeline type proportional mixer is divided into two parts, the valve body is connected by threads, a groove for positioning a valve core fixing sleeve is lathed on the valve body to ensure certain concentricity, and sealing rings are arranged above and below the valve core fixing sleeve to ensure that water or foam liquid cannot flow out from a gap between the valve core fixing sleeve and the valve body; the valve core is arranged on the valve core fixing sleeve and can freely slide up and down; a rubber sealing ring is embedded above the valve body, and when the valve core is jacked up by water to a certain height, the rubber sealing ring is directly extruded to form end face sealing, so that water is prevented from flowing out; in a normal state, a liquid overflowing channel (as shown in figure 2) is reserved between the valve core and the valve core fixing sleeve, so that a fixed overflowing area of the pipeline type proportional mixer is ensured to pass through the foam liquid in a normal working state.
Furthermore, the ports of the upper valve body and the lower valve body are connected with the pipeline type proportional mixer and the liquid separation pipe in an English system internal thread connection mode.
Furthermore, a groove matched with the valve core is machined on the inner wall of the valve core fixing sleeve.
Furthermore, the valve core fixing sleeve adopts a grid type structure mode with a hollow middle part.
(III) advantageous effects
1. Most pipeline type proportional mixing devices in the market adopt a transmission swing check valve as a check device, but because foam liquid passing through a medium has certain corrosivity, a valve core check valve is generally made of stainless steel, and the check valve is normally in a closed state, so that most of suction force generated by the pipeline type proportional mixer needs to be used for overcoming the condition of opening the valve core of the check valve, the suction force for sucking the foam liquid is reduced, and the mixing ratio of the foam stock solution and water of the pipeline type proportional mixer is greatly influenced. And the utility model discloses non return device structure adopts normal operating condition for opening the state, and pipeline formula proportioner suction can fully be used for absorbing the foam liquid and need not do work to any object, provides pipeline formula proportioner's absorption foam liquid efficiency like this greatly.
2. The check valves on the market are made of metal materials, and are high in hardness and poor in sealing effect. And the utility model discloses a polytetrafluoroethylene material preparation, its hardness is less, moreover with rubber circle combined action, has not only guaranteed that the hydroenergy that flows backwards into is abundant to the case acting like this, has greatly increased the sealing performance of device.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the valve core-valve core fixing sleeve connection of the present invention.
Reference numerals: the device comprises an upper valve body 1, a foam liquid suction inlet 2, a foam liquid outlet 3, a rubber sealing ring 4, a valve core 5, a valve core fixing sleeve 6, a sealing ring 7, a liquid overflowing channel 8 and a lower valve body 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Specifically, the inner wall of the valve core fixing sleeve 6 is lathed with a groove matched with the valve core 5.
Specifically, the joints of the valve core fixing sleeve 6 and the upper valve body 1 and the lower valve body 9 are provided with sealing rings 7.
The working principle is as follows:
as shown in figure 1, when water enters from a foam concentrate outlet 3 of the device, the valve core 5 is jacked up under the impact of the water due to the impact of the water and the material of the valve core 5 is made of a relatively light polytetrafluoroethylene material, the valve core 5 can only move upwards under the impact of the water due to the positioning action of a valve core fixing sleeve 6, and when a certain distance is reached, the valve core 5 is in contact with a rubber sealing ring 4 to form end surface sealing, so that the condition that the water cannot flow out from a foam concentrate filling suction inlet 2 is ensured. Because the valve core fixing sleeve 6 is hollow in the middle by adopting a grid type mode, and the excircle of the valve core 5 is smaller than that of the valve core fixing sleeve 6 (as shown in figure 2), enough foam liquid with an overflowing area is ensured to pass through when the foam liquid is sucked, so that the normal work of the pipeline type proportioning mixer is ensured.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A check valve for a pipeline type proportional mixer comprises an upper valve body (1), a foam liquid suction inlet (2), a foam liquid outlet (3), a rubber sealing ring (4), a valve core (5), a valve core fixing sleeve (6), a sealing ring (7) and a lower valve body (9); the method is characterized in that: go up valve body (1) and pass through threaded connection with lower valve body (9), go up valve body (1) and lower valve body (9) port department and be foam liquid sunction inlet (2) and foam liquid export (3) respectively, it has rubber seal (4) to inlay in last valve body (1) of foam liquid sunction inlet (2) department to be close to, lower valve body (9) inside car has positioning groove, positioning groove has placed case fixed cover (6), case (5) are installed on case fixed cover (6) and are freely slided from top to bottom, it overflows passageway (8) to leave liquid between case (5) and case fixed cover (6).
2. The check valve for an inline proportioner of claim 1 wherein: the ports of the upper valve body (1) and the lower valve body (9) adopt British inner threads.
3. The check valve for an inline proportioner of claim 1 wherein: the inner wall of the valve core fixing sleeve (6) is lathed with a groove matched with the valve core (5).
4. The check valve for an inline proportioner of claim 1 wherein: the joint of the valve core fixing sleeve (6) and the upper valve body (1) and the lower valve body (9) is provided with a sealing ring (7).
5. The check valve for an inline proportioner of claim 1 wherein: the valve core fixing sleeve (6) adopts a grid type structure with a hollow middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921910221.7U CN211288876U (en) | 2019-11-07 | 2019-11-07 | Check valve for pipeline type proportional mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921910221.7U CN211288876U (en) | 2019-11-07 | 2019-11-07 | Check valve for pipeline type proportional mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211288876U true CN211288876U (en) | 2020-08-18 |
Family
ID=72037529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921910221.7U Active CN211288876U (en) | 2019-11-07 | 2019-11-07 | Check valve for pipeline type proportional mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211288876U (en) |
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2019
- 2019-11-07 CN CN201921910221.7U patent/CN211288876U/en active Active
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