Anti-siphon water-saving valve

Abstract

The utility model relates to the technical field of anti-siphon valves, in particular to an anti-siphon water-saving valve, which comprises a protective shell, an elastically arranged O-shaped ring, an anti-siphon valve plate and a bolt, the protective shell comprises a first splicing shell and a second splicing shell, the upper half part and the lower half part of one side, close to the second splicing shell, of the first splicing shell are fixedly connected with inserting blocks, and the inserting blocks are fixedly connected with the bolt. The first splicing shell is provided with an insertion block, the inner side of the insertion block is fixedly connected with a threaded sleeve, the upper half portion and the lower half portion of the side, close to the first splicing shell, of the second splicing shell are each provided with an insertion groove, and the top and the bottom of the second splicing shell are each provided with a threaded hole. The inserting blocks are clamped on the inner sides of the inserting grooves, and bolts penetrate through the screw holes to be spirally connected with the screw sleeves, so that detachable installation of the first splicing shell and the second splicing shell is achieved, the protective shell can be opened, and the anti-siphon valve plate on the inner side of the protective shell is convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of anti-siphon valve technology, specifically an anti-siphon water-saving valve. Background Technology

[0002] Gas station pipeline systems contain media such as fuel and lubricating oil. If a siphon occurs, these media may flow back into the storage tank or pipeline system, causing pollution and safety hazards. Furthermore, the negative pressure and flow fluctuations caused by the siphon can damage pipelines and equipment. Therefore, anti-siphon water-saving valves are usually installed in the pipelines of gas stations. These valves can stabilize pressure and effectively prevent liquid backflow caused by negative pressure, avoiding the backflow of oil or other harmful substances, thereby protecting the safe operation of the storage tank and the entire system.

[0003] The "Anti-siphon Water-saving Valve" with authorization announcement number "CN212455649U" solves the problem that anti-siphon failure will occur when the spring is fatigued or fails. However, its outer shell is an integral structure. When the structure inside the outer shell has a problem and needs to be repaired, it is not convenient to disassemble the outer shell, which reduces the efficiency of the anti-siphon water-saving valve. Therefore, an anti-siphon water-saving valve is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-siphon water-saving valve to solve the problem that the outer casing of the anti-siphon water-saving valve cannot be opened to repair its internal structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An anti-siphon water-saving valve includes a protective shell, an elastically arranged O-ring, an anti-siphon valve plate, and a bolt consisting of a head and a screw. The anti-siphon valve plate is disposed inside the protective shell. The protective shell includes a first splicing shell with a groove on its outer side and a second splicing shell with a groove on its outer side. The second splicing shell is disposed on one side of the first splicing shell. The upper and lower halves of the first splicing shell near the second splicing shell are fixedly connected to symmetrically arranged inserts. The inner side of each insert is fixedly connected to a threaded sleeve. The upper and lower halves of the second splicing shell near the first splicing shell are provided with slots. The top and bottom of the second splicing shell are provided with threaded holes communicating with the slots.

[0007] Preferably, a symmetrically arranged sealing strip is fixedly connected to the outer side of the first splicing shell. The sealing strip is elastically arranged and fits against the second splicing shell. The O-ring is fitted onto the outer side of the sealing strip.

[0008] Preferably, the insert is engaged inside the slot, and the bolt's thread passes through the threaded hole and is helically connected to the threaded sleeve.

[0009] Preferably, a washer is fitted onto the outer side of the bolt shank, the washer being disposed between the bolt head and the second splicing shell, and the washer being in contact with the bolt head and the second splicing shell.

[0010] Preferably, the anti-siphon valve plate is installed between the first and second splicing shells, and the O-ring is fitted into the groove on the outside of the first and second splicing shells.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the protective shell for installing the anti-siphon valve plate is divided into a first splicing shell and a second splicing shell by a structure consisting of a plug, a screw sleeve, a bolt, a screw hole, and a slot. The plug is engaged inside the slot, and the bolt passes through the screw hole and is screwed to the screw sleeve, thereby enabling the first splicing shell and the second splicing shell to be detachably installed. This allows the protective shell to be opened, facilitating the maintenance of the anti-siphon valve plate inside the protective shell. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the second splicing shell of this utility model;

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A;

[0016] Figure 4 This is a schematic diagram of the structure of the first splicing shell of this utility model;

[0017] Figure 5 This is a schematic diagram of the installation structure of the sealing strip of this utility model;

[0018] Figure 6 This is a schematic diagram of the assembly structure of the first and second splicing shells of this utility model;

[0019] Figure 7 This utility model Figure 6 A schematic diagram of the structure at point B.

[0020] In the diagram: 1. Protective shell; 101. First splicing shell; 102. Second splicing shell; 2. O-ring; 3. Anti-siphon valve plate; 4. Insert block; 5. Screw sleeve; 6. Sealing strip; 7. Bolt; 8. Gasket; 9. Screw hole; 10. Slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0027] Please see Figure 1-7 This utility model provides a technical solution:

[0028] An anti-siphon water-saving valve includes a protective shell 1, an elastically arranged O-ring 2, an anti-siphon valve plate 3, and a bolt 7 consisting of a head and a screw. The anti-siphon valve plate 3 is disposed inside the protective shell 1. The protective shell 1 includes a first splicing shell 101 with a groove on its outer side and a second splicing shell 102 with a groove on its outer side. The second splicing shell 102 is disposed on one side of the first splicing shell 101. The upper and lower halves of the first splicing shell 101 near the second splicing shell 102 are fixedly connected to symmetrically arranged inserts 4. The inner side of the inserts 4 is fixedly connected to a threaded sleeve 5. The upper and lower halves of the second splicing shell 102 near the first splicing shell 101 are provided with slots 10. The top and bottom of the second splicing shell 102 are provided with screw holes 9 communicating with the slots 10. This arrangement allows the protective shell 1 to be opened.

[0029] A symmetrically arranged sealing strip 6 is fixedly connected to the outer side of the first splicing shell 101. The sealing strip 6 is elastic and fits against the second splicing shell 102. An O-ring 2 is sleeved on the outer side of the sealing strip 6. This arrangement seals the gap between the second splicing shell 102 and the first splicing shell 101, preventing oil leakage. The insert block 4 engages with the inner side of the slot 10. The bolt 7's shank passes through the threaded hole 9 and is screwed into the threaded sleeve 5. This arrangement enables the splicing of the first splicing shell 101 and the second splicing shell 102. A washer 8 is sleeved on the outer side of the bolt 7's shank. The washer 8 is located between the head of the bolt 7 and the second splicing shell 102. Between the two splicing shells 102, the gasket 8 and the head of the bolt 7 are fitted together with the second splicing shell 102. This arrangement allows the gasket 8 to increase the contact area between the bolt 7 and the second splicing shell 102, thereby enabling stable positioning of the second splicing shell 102. The anti-siphon valve plate 3 is installed between the first splicing shell 101 and the second splicing shell 102, and the O-ring 2 is fitted into the groove on the outside of the first splicing shell 101 and the second splicing shell 102. This arrangement enables the installation of the anti-siphon valve plate 3, and the O-ring 2 can provide a certain degree of sealing and protection for the first splicing shell 101 and the second splicing shell 102.

[0030] Working process: The protective shell 1, together with the anti-siphon valve plate 3 inside, can stabilize the pressure and effectively prevent liquid backflow caused by negative pressure, avoiding the backflow of oil or other harmful substances into the pipelines of the gas station. When the anti-siphon valve plate 3 needs maintenance, the elastically set O-ring 2 can be opened first, so that the O-ring 2 is disengaged from the groove on the outside of the first splicing shell 101 and the second splicing shell 102. Then, the bolts 7 at the top and bottom of the second splicing shell 102 are removed in sequence, so that the screw of the bolt 7 and the screw sleeve 5 are screwed together, so that the screw of the bolt 7 is disengaged from the screw sleeve 5. Hole 9, then detach the gasket 8 from the bolt 7, and pull the first splice shell 101 or the second splice shell 102 to both sides, so that the insert 4 disengages from the slot 10, thus disassembling the protective shell 1. This allows for the inspection of the anti-siphon valve plate 3, or the replacement of a new protective shell 1 or anti-siphon valve plate 3. The reverse operation allows for the installation of the protective shell 1. After installation, the sealing strip 6 will fit against the second splice shell 102, thereby sealing the gap between the second splice shell 102 and the first splice shell 101, preventing oil leakage.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-siphon water-saving valve, comprising a protective shell (1), an elastically arranged O-ring (2), an anti-siphon valve plate (3), and a bolt (7) consisting of a head and a screw, characterized in that: The anti-siphon valve plate (3) is disposed on the inner side of the protective shell (1). The protective shell (1) includes a first splicing shell (101) with a groove on the outer side and a second splicing shell (102) with a groove on the outer side. The second splicing shell (102) is disposed on one side of the first splicing shell (101). The upper and lower halves of the first splicing shell (101) near the second splicing shell (102) are fixedly connected with symmetrically arranged inserts (4). The inner side of the inserts (4) is fixedly connected with screw sleeves (5). The upper and lower halves of the second splicing shell (102) near the first splicing shell (101) are provided with slots (10). The top and bottom of the second splicing shell (102) are provided with screw holes (9) that communicate with the slots (10).

2. The anti-siphon water-saving valve according to claim 1, characterized in that: The outer side of the first splicing shell (101) is fixedly connected with symmetrically arranged sealing strips (6), the sealing strips (6) are elastically arranged, the sealing strips (6) are in contact with the second splicing shell (102), and the O-rings (2) are sleeved on the outer side of the sealing strips (6).

3. The anti-siphon water-saving valve according to claim 1, characterized in that: The insert (4) engages with the inside of the slot (10), and the bolt (7) thread passes through the screw hole (9) and is spirally connected to the screw sleeve (5).

4. The anti-siphon water-saving valve according to claim 1, characterized in that: A washer (8) is sleeved on the outside of the bolt (7). The washer (8) is located between the head of the bolt (7) and the second splicing shell (102). The washer (8) is in contact with the head of the bolt (7) and the second splicing shell (102).

5. The anti-siphon water-saving valve according to claim 1, characterized in that: The anti-siphon valve plate (3) is installed between the first splicing shell (101) and the second splicing shell (102), and the O-ring (2) is fitted into the groove on the outside of the first splicing shell (101) and the second splicing shell (102).

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