CN215861904U - Backflow preventer with clamping sleeve type valve seat structure - Google Patents
Backflow preventer with clamping sleeve type valve seat structure Download PDFInfo
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- CN215861904U CN215861904U CN202122400188.7U CN202122400188U CN215861904U CN 215861904 U CN215861904 U CN 215861904U CN 202122400188 U CN202122400188 U CN 202122400188U CN 215861904 U CN215861904 U CN 215861904U
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Abstract
The utility model discloses a backflow preventer with a cutting ferrule type valve seat structure, which comprises a valve body assembly and a drainer connected with the valve body assembly, wherein the valve body assembly comprises a valve body and a valve cover connected with the valve body; a water inlet cavity is formed in the area between the inlet of the valve body and the inlet sealing pair, a water outlet cavity is formed in the area between the outlet of the valve body and the outlet sealing pair, and an intermediate cavity is formed in the area between the inlet sealing pair and the outlet sealing pair; the inlet and outlet sealing pairs respectively comprise a valve seat, a sealing ring, a spring, a valve rod and a valve clack, the valve seat is installed on the valve body, the sealing ring is arranged between the valve body and the valve seat to form a sealing structure, and the valve rod is slidably installed on the valve seat. The backflow prevention valve has the advantages of good backflow prevention effect and convenience in installation in actual use, and can effectively solve the problem that the valve seat and the valve body are difficult to match and process.
Description
Technical Field
The utility model relates to the technical field of valve control, in particular to a backflow preventer with a cutting sleeve type valve seat structure.
Background
The backflow preventer is a hydraulic control combination device which is used on a pipeline with water as a medium and strictly limits that water in the pipeline can only flow in one direction according to the backflow pollution of running water supply equipment, particularly domestic drinking water pipelines, and has the function of preventing the medium in the pipeline from flowing backwards under any working condition so as to achieve the purpose of avoiding backflow pollution.
At present, the backflow preventer for the urban water supply network is characterized in that a valve seat is fixedly connected with a valve body by threads or bolts, and the backflow preventer is large in processing difficulty, complex in assembly and inconvenient to maintain during production of the structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a backflow preventer with a ferrule type valve seat structure, which has the advantages of good backflow prevention effect and convenience in installation in actual use and can effectively solve the problem that a valve seat and a valve body are difficult to match and process.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a backflow preventer with a cutting ferrule type valve seat structure comprises a valve body assembly and a drainer connected with the valve body assembly, wherein the valve body assembly comprises a valve body and a valve cover connected with the valve body; a water inlet cavity is formed in the area between the inlet of the valve body and the inlet sealing pair, a water outlet cavity is formed in the area between the outlet of the valve body and the outlet sealing pair, and an intermediate cavity is formed in the area between the inlet sealing pair and the outlet sealing pair;
the inlet and outlet sealing pairs respectively comprise a valve seat, a sealing ring, a spring, a valve rod and a valve clack, the valve seat is installed on the valve body, the sealing ring is arranged between the valve body and the valve seat to form a sealing structure, the valve rod is installed on the valve seat in a sliding mode, the spring is sleeved on the upper valve rod, the left end of the spring is connected with the valve rod, the right end of the spring is connected with the valve seat, and the valve clack and the valve seat form a sealing structure under the action of the valve rod;
the valve seat is provided with a first clamping ring groove, the valve body is provided with a second clamping ring groove, and the valve seat is fixedly connected with the valve body through clamping rings arranged in the first clamping ring groove and the second clamping ring groove.
Wherein, the sealing washer is O type sealing washer.
Further optimize, the valve clack includes skeleton and rubber layer, and the rubber layer cladding is on the skeleton, and the rubber layer forms seal structure with the disk seat contact back.
In the middle, the valve rod is connected with the valve clack through threads.
Wherein, intake antrum and play water cavity are connected with the control valve, and the intermediate chamber is used for connecting connection control valve or manometer.
Further optimize, the drainer is connected with the middle cavity, and the other cavity of the drainer is connected with the water inlet cavity.
Further optimize, the valve body both ends are provided with flange.
Compared with the prior art, the utility model has the following beneficial effects:
the water inlet cavity, the water outlet cavity and the middle cavity are formed in the valve body, and the backflow prevention purpose is realized through the arranged inlet and outlet sealing pairs; when the water inlet cavity pressure is zero, the drainer drains water and forms air partition to prevent backflow pollution; meanwhile, a first clamping ring groove is formed in the valve seat, a second clamping ring groove is formed in the valve body, and the valve seat and the valve body are fixedly connected through clamping rings arranged in the first clamping ring groove and the second clamping ring groove; the valve seat and the valve body are fixed through the clamping ring, the machining difficulty of the first clamping ring groove and the second clamping ring groove is small, the structure is simple, the sealing is reliable, and the problem that the valve seat and the valve body are difficult to machine in a matched mode can be effectively solved; and install it in the water pipe network, can effectively solve the running water refluence pollution problem.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the collar structure of the present invention.
FIG. 3 is an enlarged view of a portion of FIG. 1 according to the present invention.
Reference numerals:
101-valve body assembly, 102-drainer, 103-valve body, 104-valve cover, 105-inlet sealing pair, 106-outlet sealing pair, 107-water inlet cavity, 108-water outlet cavity, 109-middle cavity, 110-valve seat, 111-sealing ring, 112-spring, 113-valve rod, 114-valve clack, 115-first clamping ring groove, 116-second clamping ring groove, 117-clamping ring, 118-framework, 119-rubber layer, 120-connecting flange, 121-conduit and 122-control valve.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the utility model. To simplify the disclosure of embodiments of the utility model, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the utility model. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1-3, the embodiment discloses a backflow preventer with a cutting ferrule type valve seat structure, which comprises a valve body assembly 101 and a drainer 102 connected with the valve body assembly 101, wherein the valve body assembly 101 comprises a valve body 103 and a valve cover 104 connected with the valve body 103, an inlet sealing pair 105 and an outlet sealing pair 106 are arranged in the valve body 103, the inlet sealing pair 105 is arranged at the inlet end of the valve body 103, and the outlet sealing pair 106 is arranged at the outlet end of the valve body 103; a water inlet cavity 107 is formed in the area between the inlet of the valve body 103 and the inlet sealing pair 105, a water outlet cavity 108 is formed in the area between the outlet of the valve body 103 and the outlet sealing pair 106, and an intermediate cavity 109 is formed in the area between the inlet and the outlet sealing pair;
the inlet and outlet sealing pairs respectively comprise a valve seat 110, a sealing ring 111, a spring 112, a valve rod 113 and a valve flap 114, the valve seat 110 is installed on the valve body 103, the sealing ring 111 is arranged between the valve body 103 and the valve seat 110 to form a sealing structure, the valve rod 113 is installed on the valve seat 110 in a sliding mode, the spring 112 is sleeved on the upper valve rod 113, the left end of the rear portion of the upper portion of the rear portion of the valve rod is connected with the valve rod 113, the right end of the rear portion of the valve rod is connected with the valve seat 110, and the valve flap 114 is tightly attached to form a sealing structure under the valve seat 110 to form a sealing structure;
the valve seat 110 is provided with a first clamping ring groove 115, the valve body 103 is provided with a second clamping ring groove 116, and the valve seat 110 and the valve body 103 are fixedly connected through a clamping ring 17 arranged in the first clamping ring groove and the second clamping ring groove.
The water inlet cavity 107, the water outlet cavity 108 and the middle cavity 109 are formed in the valve body 103, and the purpose of backflow prevention is achieved through the arranged inlet and outlet sealing pairs; when the water inlet cavity 107 normally works, a medium flows out of the water outlet cavity 108 through the inlet sealing pair 105 and the outlet sealing pair 106 from the water inlet cavity 107, when the pressure of the water inlet cavity 107 is lower than that of the water outlet cavity 108, the inlet and outlet sealing pairs 106 are closed to prevent the medium from flowing backwards and polluting, and when the pressure of the water inlet cavity 107 is zero, the water drainer 102 drains water and forms an air partition to prevent backflow pollution; meanwhile, a first clamping ring groove 115 is formed in the valve seat 110, a second clamping ring groove 116 is formed in the valve body 103, and the valve seat 110 is fixedly connected with the valve body 103 through a clamping ring 17 arranged in the first clamping ring groove and the second clamping ring groove; therefore, the valve seat 110 and the valve body 103 are fixed through the clamping ring 17, the machining difficulty of the first clamping ring groove and the second clamping ring groove is small, the structure is simple, the sealing is reliable, and the problem that the valve seat 110 and the valve body 103 are difficult to machine in a matched mode can be effectively solved; and install it in the water pipe network, can effectively solve the running water refluence pollution problem.
The sealing ring 111 is an O-ring, and the sealing effect between the valve seat 110 and the valve body 103 can be improved by the O-ring.
Further preferably, the valve flap 114 comprises a framework 118 and a rubber layer 119, the rubber layer is coated on the framework 118, and the rubber layer is in contact with the valve seat 110 to form a sealing structure; in this embodiment, the framework 118 is made of stainless steel, which can improve the strength of the valve flap 114, prevent the valve flap 114 from deforming under water pressure, and effectively improve the sealing performance.
Further preferably, the valve rod 113 is connected with the valve flap 114 through a screw thread, so that in practical use, the elastic force of the spring 112 is conveniently adjusted, the valve flap 114 is in sealing contact with the valve seat 110, and the sealing performance is improved.
In actual use, the inlet chamber 107 and the outlet chamber 108 are connected to the control valve 122, and the intermediate chamber 109 is connected to the control valve 122 or a pressure gauge.
Wherein, the drainer 102 is connected with the middle cavity, and the other cavity of the drainer 102 is connected with the water inlet cavity.
Further optimize, valve body 103 both ends are provided with flange 120, and flange 120 that sets up can be more convenient when the installation.
In actual use, the intermediate chamber 109 is connected to the drain 102, and the other chamber of the drain 102 is connected to the inlet chamber 107 of the valve body 103 by a conduit 121. When the water inlet cavity is in normal operation, the medium flows out of the water outlet cavity 108 from the water inlet cavity 107 through the inlet sealing pair 105 and the outlet sealing pair 106, and when the pressure of the water inlet cavity is lower than that of the water outlet cavity, the inlet and outlet sealing pair 106 is closed, so that the backflow pollution of the medium is prevented.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a backflow preventer with cutting ferrule formula disk seat structure, includes valve body subassembly and the drainer of being connected with the valve body subassembly, its characterized in that:
the valve body assembly comprises a valve body and a valve cover connected with the valve body, an inlet sealing pair and an outlet sealing pair are arranged in the valve body, the inlet sealing pair is arranged at the inlet end of the valve body, and the outlet sealing pair is arranged at the outlet end of the valve body; a water inlet cavity is formed in the area between the inlet of the valve body and the inlet sealing pair, a water outlet cavity is formed in the area between the outlet of the valve body and the outlet sealing pair, and an intermediate cavity is formed in the area between the inlet sealing pair and the outlet sealing pair;
the inlet and outlet sealing pairs respectively comprise a valve seat, a sealing ring, a spring, a valve rod and a valve clack, the valve seat is installed on the valve body, the sealing ring is arranged between the valve body and the valve seat to form a sealing structure, the valve rod is installed on the valve seat in a sliding mode, the spring is sleeved on the upper valve rod, the left end of the spring is connected with the valve rod, the right end of the spring is connected with the valve seat, and the valve clack and the valve seat form a sealing structure under the action of the valve rod;
the valve seat is provided with a first clamping ring groove, the valve body is provided with a second clamping ring groove, and the valve seat is fixedly connected with the valve body through clamping rings arranged in the first clamping ring groove and the second clamping ring groove.
2. A backflow preventer having a bite type valve seat structure according to claim 1, wherein: the sealing ring is an O-shaped sealing ring.
3. A backflow preventer having a bite type valve seat structure according to claim 1, wherein: the valve clack comprises a framework and a rubber layer, the rubber layer is coated on the framework, and the rubber layer is in contact with the valve seat to form a sealing structure.
4. A backflow preventer having a bite type valve seat structure according to claim 1, wherein: the water inlet cavity and the water outlet cavity are connected with a control valve, and the middle cavity is used for being connected with the control valve or a pressure gauge.
5. A backflow preventer having a bite type valve seat structure according to claim 1, wherein: the drainer is connected with the middle cavity, and the other cavity of the drainer is connected with the water inlet cavity.
6. A backflow preventer having a bite type valve seat structure according to claim 1, wherein: and two ends of the valve body are provided with connecting flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122400188.7U CN215861904U (en) | 2021-09-30 | 2021-09-30 | Backflow preventer with clamping sleeve type valve seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122400188.7U CN215861904U (en) | 2021-09-30 | 2021-09-30 | Backflow preventer with clamping sleeve type valve seat structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861904U true CN215861904U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122400188.7U Active CN215861904U (en) | 2021-09-30 | 2021-09-30 | Backflow preventer with clamping sleeve type valve seat structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861904U (en) |
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2021
- 2021-09-30 CN CN202122400188.7U patent/CN215861904U/en active Active
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