CN204878891U - Buoyancy formula check valve - Google Patents
Buoyancy formula check valve Download PDFInfo
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- CN204878891U CN204878891U CN201520421657.5U CN201520421657U CN204878891U CN 204878891 U CN204878891 U CN 204878891U CN 201520421657 U CN201520421657 U CN 201520421657U CN 204878891 U CN204878891 U CN 204878891U
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- valve body
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- safety check
- type safety
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Abstract
The utility model relates to a buoyancy formula check valve is connected to form by last valve body and lower valve body, each other for the last valve body connected and the inside formation valve pocket of valve body down arrange buoyancy spare in the valve pocket. The utility model discloses simple structure, simple to operate, the effect that utilizes the law of buoyancy to realize taking the non return to the liquid of refluence has guaranteed that the fluid passage gravity at the check valve upper reaches discharges certainly, the utility model discloses overall structure adopts stainless steel material to make, satisfies clean requirement, through life and the sealing performance who has effectively improved buoyancy spare at buoyancy spare surface coating, the utility model discloses middle and upper valve body is changeable with the connected mode of lower valve body, satisfies different demands, in addition the utility model discloses an optimize structure, the at utmost has reduced subassembly quantity, has that the subassembly is few, the assembly is easy, maintain convenient advantage.
Description
Technical field
The utility model relates to valve field, particularly relates to a kind of buoyancy type safety check.
Background technique
Safety check is also known as one-way valve, check valve or check valve, and its effect ensures medium one-way flow in pipeline and can not flow backwards.Conventional safety check flap is opened under fluid pressure action, and fluid flows to outlet side from suction side, and when suction side pressure is lower than outlet side, flap is automatically closed in case fluid flows backwards under fluid pressure action, therefore only allows medium to flow to a direction.
At present; the industries such as pharmacy, food, beverage, milk product are higher to pipe-line system purity requirements; usually incumbent firms, sterilization or sterilizing can be required; therefore often at pipe outlet, safety check can be installed and flow back to clean system to prevent the liquid in sewage conduct due to pipe-line system negative relative, cause systemic contamination accident.Extensive use elastic force type safety check under prior art condition, utilize the elastic characteristic of spring or valve core material to play non-return, but due to the resilient pressure of spring or material, when making system shutdown in pipeline original fluid not by gravity from draining, and then easily cause microbial growth to cause systemic contamination, system hygienic requirements cannot be met.Meanwhile, mostly there is the shortcomings such as complex structure, assembly is many, maintenance workload is large in safety check on the market at present.
Model utility content
For problems of the prior art, the utility model provides a kind of buoyancy type safety check, and it effectively achieves the non-return to refluence liquid, can also ensure that safety check upstream liquid is by gravity self-discharging, meets clean requirement greatly simultaneously.
The utility model provides a kind of buoyancy type safety check, and described buoyancy type safety check is connected to form by upper valve body and lower valve body, forms valve pocket, be furnished with buoyancy piece in described valve pocket in the inside of the upper valve body connected each other and lower valve body.
Preferably, described buoyancy piece is spherical or inversed taper platform shape.
Preferably, when described buoyancy piece is spherical, described buoyancy piece is installed on buoyancy piece bearing, and one end of described buoyancy piece bearing and the step of lower valve inner abut against, and the described the other end of buoyancy piece bearing and the periphery of buoyancy piece abut against.
Preferably, described buoyancy piece bearing is perforate sheet material.
Preferably, polytetrafluorethylecoatings coatings is set on the surface of described buoyancy piece.
Preferably, described valve pocket is circular cavity.
Preferably, the joint of described upper valve body and lower valve body adopts welding manner to be connected and fixed; Or
The joint of described upper valve body and described lower valve body adopts clip to be locked, by clip gasket seal between described upper valve body and described lower valve body.
Preferably, arrange non-return sealing surface at the inwall of described upper valve body, described non-return sealing surface is along the circumferential direction arranged and is stretched out along the inwall of upper valve body and forms ring convex.
Preferably, described non-return sealing surface surface scribbles ethylene-propylene-diene monomer gel coating or is provided with rubber o-ring.
Preferably, described upper valve body, described lower valve body and described buoyancy piece are made up of stainless steel material.
A kind of buoyancy type safety check that the utility model embodiment provides, its beneficial effect is as follows:
The utility model structure is simple, easy for installation, the liquid utilizing law of buoyancy to realize flowing backwards plays non-return, ensure that the liquid of safety check upstream is by gravity self-discharging, the utility model overall structure adopts stainless steel material to make, meet clean requirement, by effectively improve working life and the sealability of buoyancy piece at buoyancy piece cover coat, in the utility model, the Placement of upper valve body and lower valve body is changeable, meet different demand, the utility model is by optimizing structure in addition, at utmost reduce component count, there is assembly few, assembling easily, advantage easy to maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme of the utility model embodiment, be briefly described gathering the required accompanying drawing used to embodiment or description of the prior art below, apparently, accompanying drawing described below 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 of the present utility model the first half cuts open plan view.
Fig. 2 of the present utility model the first half cuts open schematic perspective view.
Fig. 3 is the structural representation of buoyancy piece bearing in the utility model.
Fig. 4 of the present utility model the second half cuts open plan view.
Fig. 5 of the present utility model the second half cuts open schematic perspective view.
Wherein: 1, non-return sealing surface; 2, upper valve body; 3, buoyancy piece; 4, clip pad; 5, lower valve body; 6, buoyancy piece bearing; 7, clip.
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 the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present 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.
Embodiment one:
As shown in Figure 1, Figure 2, Figure 3 shows, the utility model embodiment provides a kind of buoyancy type safety check, and this buoyancy type safety check is connected to form by upper valve body 2 and lower valve body 5, forms valve pocket at the upper valve body 2 connected each other with the inside of lower valve body 5, valve pocket is circular cavity, arranges buoyancy piece 3 in valve pocket.
In the utility model embodiment, upper valve body 2 arranges clip pad 4 with the joint of lower valve body 5, and be locked by clip 7, the quantity of clip 7 can be more than one or one, determines according to the size of buoyancy type safety check, structure and specific design.
In the utility model embodiment, upper valve body 2 also can adopt the mode of welding to be connected with the inlet/outlet of lower valve body 5.
In the utility model embodiment, buoyancy piece 3 can be spherical or any one in inversed taper platform shape.
In the utility model embodiment, when buoyancy piece 3 is spherical, this buoyancy type safety check inside is also provided with buoyancy piece bearing 6, as shown in Figure 1, Figure 2, Figure 3 shows, buoyancy piece 3 can be installed on buoyancy piece bearing 6, one end of buoyancy piece bearing 6 and the step of lower valve body 5 inside abut against, and the other end of buoyancy piece bearing 6 and the periphery of buoyancy piece 3 abut against.
As shown in Figure 3, in the utility model embodiment, buoyancy piece bearing 6 can be perforated panel material, and preferably, buoyancy piece bearing 6 can be interior lotus petal type orifice plate.
In the utility model embodiment, above-mentioned upper valve body 2 and lower valve body 5 all adopt stainless steel material to make, at the inwall of upper valve body 2, non-return sealing surface 1 is set, non-return sealing surface 1 is along the circumferential direction arranged and is stretched out along the inwall of upper valve body 2 and forms ring convex, non-return sealing surface 1 can adopt surface scribble the coating of ethylene propylene diene rubber (EthylenePropyleneDieneMonomer, EPDM) or use rubber o-ring.Non-return sealing surface 1 can cooperatively interact with described buoyancy piece 3, and anti-fluid is from circumfluence.
In the utility model embodiment, buoyancy piece 3 also can adopt stainless steel material to make, on the surface of buoyancy piece 3, can teflon (Polytetrafluoroethylene be set simultaneously, PTFE) coating, concrete can be coated with last layer PTFE coating at the outer surface of buoyancy piece 3.
In the present embodiment, when buoyancy piece 3 is inversed taper platform shape, its material generally adopts non-metallic material, as rubber etc.
Embodiment two:
Mode of execution one:
Present embodiment one is described for spherical for buoyancy piece 3, buoyancy type safety check as shown in Figure 1, Figure 2, Figure 3 shows when carrying out work, its specifically install and workflow as follows:
This buoyancy type safety check adopts vertically arranged mode, and straight up, outlet straight down, realizes upper valve body 2 by clip 7 and is connected with the locking of lower valve body 5 in the import of safety check.Valve pocket is formed in the inside of upper valve body 2 and lower valve body 5, hollow stainless steel buoyancy piece 3 with PTFE cover coat is installed in valve pocket, buoyancy piece 3 is arranged on the buoyancy piece bearing 6 with interior lotus petal type hole (as shown in Figure 3), when liquid flows into valve pocket from top to bottom, volume due to buoyancy piece 3 is less than the volume of valve pocket, therefore liquid can circulate downwards from the space between buoyancy piece 3 and valve pocket and flow out from the outlet of lower valve body 5, when there being liquid to enter valve pocket from bottom to up, buoyancy piece 3 floats due to floating function, when liquid reach a certain height, non-return sealing surface 1 with EPDM cover coat in buoyancy piece 3 and upper valve body 2 abuts against, thus form sealing, liquid cannot be flowed out from the entrance of upper valve body 2, thus play the effect of anti-backflow.
Mode of execution two:
Present embodiment two is described for inversed taper platform shape for buoyancy piece 3, buoyancy type safety check as shown in Figure 4, Figure 5 when carrying out work, its specifically install and workflow as follows:
This buoyancy type safety check adopts vertically arranged mode when concrete use, the import of safety check straight up, outlet straight down, it is made up of upper valve body 2 and lower valve body 5, valve pocket is formed in the inside of upper valve body 2 and lower valve body 5, nonmetal inversed taper platform shape buoyancy piece 3 is installed at step place in lower valve body 5 valve pocket, when there being liquid to enter valve pocket from top to bottom, buoyancy piece 3 there is circulation passage, and the space between valve pocket inwall allows liquid to pass through, liquid is flowed out from the outlet of lower valve body 5, when there being liquid to enter valve pocket from bottom to up, buoyancy piece 3 floats on liquid due to floating function, when liquid reach a certain height, the non-return sealing surface 1 that buoyancy piece 3 is provided with rubber seal with upper valve body 2 inwall contacts, form sealing, thus do not allow liquid to arrive the entrance of upper valve body 2 by valve pocket, play the effect of anti-backflow.
In the present embodiment mode two, being designed with to be beneficial to of inversed taper platform shape buoyancy piece 3 keeps overall center of gravity at floating condition, guarantees form stable, when liquid reach a certain height, be conducive to the sealing to upper valve body 2 entrance, in present embodiment two, do not need configuration buoyancy piece bearing 6 to support.
More than some preferably mode of executions of the utility model embodiment, anyone is under the prerequisite of skilled, do not deviate from spirit of the present utility model and do not exceed the technical scope that the utility model relates to prerequisite under, can to the utility model describe details do various supplement and amendment.Protection domain of the present utility model is not limited to the scope cited by embodiment, and protection domain of the present utility model is as the criterion with claim.
Claims (10)
1. a buoyancy type safety check, it is characterized in that: described buoyancy type safety check is connected to form by upper valve body (2) and lower valve body (5), form valve pocket at the upper valve body connected each other (2) and the inside of lower valve body (5), in described valve pocket, be furnished with buoyancy piece (3).
2. buoyancy type safety check as claimed in claim 1, is characterized in that: described buoyancy piece (3) is spherical or inversed taper platform shape.
3. buoyancy type safety check as claimed in claim 2, it is characterized in that: when described buoyancy piece (3) is for time spherical, described buoyancy piece (3) is installed on buoyancy piece bearing (6), the step of one end of described buoyancy piece bearing (6) and lower valve body (5) inside abuts against, and the other end of described buoyancy piece bearing (6) and the periphery of buoyancy piece (3) abut against.
4. buoyancy type safety check as claimed in claim 3, is characterized in that: described buoyancy piece bearing (6) is perforate sheet material.
5. buoyancy type safety check as claimed in claim 1, is characterized in that: arrange polytetrafluorethylecoatings coatings on the surface of described buoyancy piece (3).
6. buoyancy type safety check as claimed in claim 1, is characterized in that: described valve pocket is circular cavity.
7. the buoyancy type safety check as described in any one of claim 1 to 6, is characterized in that:
Described upper valve body (2) adopts welding manner to be connected and fixed with the joint of described lower valve body (5); Or
Described upper valve body (2) and the joint of described lower valve body (5) adopt clip (7) upper valve body (2) and lower valve body (5) to be locked, and described upper valve body (2) is furnished with clip pad (4) with the joint of described lower valve body (5).
8. the buoyancy type safety check as described in any one of claim 1 to 6, it is characterized in that: arrange non-return sealing surface (1) at the inwall of described upper valve body (2), described non-return sealing surface (1) is along the circumferential direction arranged and is stretched out along the inwall of described upper valve body (2) and forms ring convex.
9. buoyancy type safety check as claimed in claim 8, is characterized in that: described non-return sealing surface (1) surface scribbles ethylene-propylene-diene monomer gel coating or is provided with rubber o-ring.
10. the buoyancy type safety check as described in any one of claim 1 to 6, is characterized in that: described upper valve body (2), described lower valve body (5) and described buoyancy piece (3) are made up of stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520421657.5U CN204878891U (en) | 2015-06-18 | 2015-06-18 | Buoyancy formula check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520421657.5U CN204878891U (en) | 2015-06-18 | 2015-06-18 | Buoyancy formula check valve |
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| Publication Number | Publication Date |
|---|---|
| CN204878891U true CN204878891U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520421657.5U Active CN204878891U (en) | 2015-06-18 | 2015-06-18 | Buoyancy formula check valve |
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| CN (1) | CN204878891U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079498A (en) * | 2016-08-01 | 2016-11-09 | 王军 | Hollow ball, the mould making hollow ball and the method making hollow ball |
| CN109057268A (en) * | 2018-09-17 | 2018-12-21 | 张连军 | A kind of metope mopping device with auto feed function |
-
2015
- 2015-06-18 CN CN201520421657.5U patent/CN204878891U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079498A (en) * | 2016-08-01 | 2016-11-09 | 王军 | Hollow ball, the mould making hollow ball and the method making hollow ball |
| CN109057268A (en) * | 2018-09-17 | 2018-12-21 | 张连军 | A kind of metope mopping device with auto feed function |
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