BA valve

Abstract

The utility model relates to valve technical field, and disclose BA valve, including BA valve subassembly, the pressure reducing component of water inlet pressure pressure reduction, and prevent the backflow component of water backflow, the BA valve subassembly includes: BA valve body, the fixed base of welding installation in BA valve body front end, the flow -through hole of setting in fixed base side portion and the discharge hole of setting in another side of fixed base, the pressure reducing component includes: the pressure reducing upper cover of welding in BA valve body top, and the valve stem of liftable installation in the inside of pressure reducing upper cover, the backflow prevention component includes: the connecting base of detachable connection through bolt in fixed base front end. The utility model discloses through setting detachable backflow prevention component, and the connecting base on backflow prevention valve body is installed on the fixed base through bolt, when actual use, can switch the direction of drainage interface freely according to the installation space, realizes multi -angle drainage, can adapt to different pipeline installation environment.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically the BA valve. Background Technology

[0002] The pressure-reducing backflow preventer is a hydraulic control device consisting of two independently acting check valves and a drain valve. It can strictly limit the unidirectional flow of pressurized water in the pipeline and prevent backflow contamination.

[0003] Existing pressure-reducing backflow preventers include check valves located at the inlet and outlet ends, respectively, and a drain valve located between the two check valves, which is controlled to open and close by pressure difference.

[0004] The drain valve on current pressure-reducing backflow preventers has a fixed discharge direction, which is quite limiting during pipeline installation and makes it inconvenient to adjust the drain valve's discharge direction according to the spatial layout of the installation site. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that the existing pressure-reducing backflow preventer has a fixed discharge direction for the drain valve, it is quite limiting during pipeline installation and inconvenient to adjust the drain valve's discharge direction according to the spatial layout of the installation site.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] BA valve, including BA valve assembly; pressure reducing assembly for reducing inlet water pressure; and anti-backflow assembly for preventing water backflow;

[0009] The BA valve assembly includes: a BA valve body; a fixed base welded to the front end of the BA valve body; a flow hole on the side of the fixed base; and a discharge hole on the other side of the fixed base.

[0010] The pressure-reducing assembly includes: a pressure-reducing cover welded to the top of the BA valve body; and a valve stem that can be lifted and installed inside the pressure-reducing cover.

[0011] The anti-backflow assembly includes: a connecting base that is detachably connected to the front end of the fixed base by bolts; an anti-backflow valve body fixed to one side of the connecting base; and a drain port fixed below the anti-backflow valve body.

[0012] As a further embodiment of this utility model, the BA valve assembly further includes: an inlet end fixed to the left side of the BA valve body; and an outlet end fixed to the right side of the BA valve body.

[0013] As a further improvement of this utility model: both the water outlet and the water inlet are provided with threads, and both the water outlet and the water inlet are equipped with shut-off ball valves.

[0014] As a further embodiment of this utility model, the BA valve assembly further includes: a filter screen valve cover threadedly connected to the lower part of the BA valve body; and a plastic filter screen detachably installed inside the filter screen valve cover, wherein the filter screen valve cover is made of transparent material.

[0015] As a further embodiment of this utility model: the pressure reducing assembly further includes: a diaphragm disposed above the valve stem; a support spring disposed above the diaphragm; and a spindle located inside the pressure reducing cover. The two sets of support springs are respectively sleeved on the outside of the valve stem and the spindle. A pressure reducing knob is rotatably mounted on the top of the pressure reducing cover.

[0016] As a further embodiment of this utility model, the anti-backflow assembly further includes: a piston fixing bracket disposed inside the anti-backflow valve body; a one-way valve fixing sleeve disposed inside the piston fixing bracket; a one-way valve movable sleeve disposed inside the one-way valve fixing sleeve; and a one-way valve piston rod disposed inside the one-way valve movable sleeve.

[0017] As a further improvement of this utility model, the anti-backflow assembly further includes a connecting spring disposed between the one-way valve piston rod and the one-way valve fixing sleeve, and the connecting spring is also disposed between the one-way valve fixing sleeve and the piston fixing bracket.

[0018] As a further embodiment of this utility model: the anti-backflow valve body is connected to the water outlet through the discharge hole, and the water inlet is connected to the anti-backflow valve body through the flow hole.

[0019] As a further improvement of this utility model: a pressure gauge assembly is also connected to the outside of the anti-backflow valve body. The pressure gauge assembly includes: a first pressure gauge disposed on the top of the anti-backflow valve body; a second pressure gauge disposed on the left side of the anti-backflow valve body; and a third pressure gauge disposed below the water outlet.

[0020] As a further embodiment of this utility model: the first pressure gauge and the second pressure gauge are both threadedly connected to the anti-backflow valve body, and the third pressure gauge is threadedly connected to the BA valve body.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model features a detachable anti-backflow component. The connecting base on the anti-backflow valve body is bolted to the fixed base. In actual use, the direction of the drain interface can be freely switched according to the installation space to achieve multi-angle drainage and adapt to different pipeline installation environments.

[0023] 2. By setting a transparent filter valve cover, this utility model allows observation of the impurity filtration status of the plastic filter screen. The filter valve cover can be disassembled for easy cleaning of the internal plastic filter screen.

[0024] 3. This utility model, through the anti-backflow component, can prevent water from flowing back from the outlet to the inlet. At the same time, it is equipped with a detachable pressure gauge component, which can be disassembled according to the user's needs for convenient use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the BA valve.

[0026] Figure 2 A half-sectional view of the pressure-reducing cover for the BA valve;

[0027] Figure 3 A schematic diagram of a half-section of the anti-backflow valve body of a BA valve;

[0028] Figure 4 This is a schematic diagram of the structure of the BA valve body and the lens of the BA valve.

[0029] Figure 5 A structural schematic diagram of the BA valve mounting base from another perspective.

[0030] In the diagram: 1. BA valve assembly; 101. BA valve body; 102. Fixed base; 103. Inlet; 104. Outlet; 105. Shut-off ball valve; 106. Filter screen valve cover; 107. Plastic filter screen; 108. Discharge hole; 109. Flow hole; 2. Pressure reducing assembly; 201. Pressure reducing knob; 202. Pressure reducing cover; 203. Support spring; 204. Diaphragm; 205. Valve stem; 206. Spindle; 3. Anti-backflow assembly; 301. Anti-backflow valve body; 302. Connecting base; 303. Drain interface; 304. One-way valve piston rod; 305. One-way valve movable sleeve; 306. One-way valve fixed sleeve; 307. Piston fixing bracket; 308. Connecting spring; 4. Pressure gauge assembly; 401. First pressure gauge; 402. Second pressure gauge; 403. Third pressure gauge. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0034] Example 1

[0035] Please see Figures 1-4 This is the first embodiment of the present invention.

[0036] This embodiment provides a BA valve, including a BA valve assembly 1; a pressure reducing assembly 2 for reducing inlet water pressure; and an anti-backflow assembly 3 for preventing water backflow.

[0037] The BA valve assembly 1 includes: a BA valve body 101; a fixed base 102 welded to the front end of the BA valve body 101; a flow hole 109 opened on the side of the fixed base 102; and a discharge hole 108 opened on the other side of the fixed base 102.

[0038] The pressure reducing assembly 2 includes: a pressure reducing cover 202 welded to the top of the BA valve body 101; and a valve stem 205 that can be lifted and installed inside the pressure reducing cover 202;

[0039] The anti-backflow assembly 3 includes: a connecting base 302 that is detachably connected to the front end of the fixed base 102 by bolts; an anti-backflow valve body 301 fixed to one side of the connecting base 302; and a drain port 303 fixed below the anti-backflow valve body 301.

[0040] Specifically, the BA valve assembly 1 also includes: an inlet end 103 fixed to the left side of the BA valve body 101; and an outlet end 104 fixed to the right side of the BA valve body 101.

[0041] Furthermore, the inlet end 103 and the outlet end 104 are used for water intake and drainage.

[0042] Specifically, both the outlet end 104 and the inlet end 103 are provided with threads, and both the outlet end 104 and the inlet end 103 are equipped with shut-off ball valves 105.

[0043] Furthermore, a handle is provided on the top of the shut-off ball valve 105, which can be rotated to shut off the pipeline.

[0044] Specifically, the BA valve assembly 1 also includes: a filter screen cover 106 threadedly connected to the bottom of the BA valve body 101; and a plastic filter screen 107 detachably installed inside the filter screen cover 106, wherein the filter screen cover 106 is made of transparent material.

[0045] Furthermore, the plastic filter screen 107 is used to filter the passing water flow. The filtered impurities remain between the plastic filter screen 107 and the filter screen valve cover 106. The transparent filter screen valve cover 106 allows observation of the internal impurities. Since the top of the filter screen valve cover 106 is threaded to the BA valve body 101, it is convenient to disassemble the filter screen valve cover 106 and clean the internal plastic filter screen 107.

[0046] Specifically, the pressure reducing assembly 2 also includes: a diaphragm 204 disposed above the valve stem 205; a support spring 203 disposed above the diaphragm 204; and a spindle 206 located inside the pressure reducing cover 202. The two sets of support springs 203 are respectively sleeved on the outside of the valve stem 205 and the spindle 206. A pressure reducing knob 201 is rotatably mounted on the top of the pressure reducing cover 202.

[0047] Furthermore, the upper and lower sets of support springs 203 provide support for the valve stem 205. When the pressure at the inlet end 103 is high, the support springs 203 can play a certain role in reducing pressure.

[0048] In use, the BA valve assembly 1 can be used according to the pipeline connection. The direction of the drain port 303 can be freely switched according to the installation space to achieve multi-angle drainage, which can adapt to different pipeline installation environments. The water flows into the pressure reducing assembly 2 through the inlet end 103. The upper and lower sets of support springs 203 provide support for the valve stem 205. When the pressure at the inlet end 103 is large, it can play a certain pressure reducing role under the action of the support springs 203. The water flow filtered through the plastic filter screen 107 enters the anti-backflow assembly 3 and enters the outlet end 104 through the anti-backflow valve body 301 to achieve water flow pressure reduction and circulation.

[0049] In summary, by setting a detachable anti-backflow component 3, the connecting base 302 on the anti-backflow valve body 301 is installed on the fixed base 102 by bolts. In actual use, the direction of the drain interface 303 can be freely switched according to the installation space to achieve multi-angle drainage, which can adapt to different pipeline installation environments. By setting a transparent filter valve cover 106, the impurity filtration of the plastic filter screen 107 can be observed. The filter valve cover 106 can be disassembled to facilitate cleaning of the internal plastic filter screen 107.

[0050] Example 2

[0051] Please see Figures 3-5 This is the second embodiment of the present utility model.

[0052] Specifically, the anti-backflow assembly 3 also includes: a piston retainer 307 disposed inside the anti-backflow valve body 301; a one-way valve retainer 306 disposed inside the piston retainer 307; a one-way valve movable sleeve 305 disposed inside the one-way valve retainer 306; and a one-way valve piston rod 304 disposed inside the one-way valve movable sleeve 305.

[0053] Furthermore, when pressure is generated at the inlet end 103, the movable sleeve 305 of the one-way valve can be pressed down, and the fixed sleeve 306 of the one-way valve can move downward. The water flow can enter the anti-backflow valve body 301 through the flow hole 109, and flow into the outlet end 104 through the anti-backflow valve body 301, so that the water flow can pass normally.

[0054] Specifically, the anti-backflow component 3 also includes a connecting spring 308 disposed between the one-way valve piston rod 304 and the one-way valve fixing sleeve 306, and the connecting spring 308 is also disposed between the one-way valve fixing sleeve 306 and the piston fixing bracket 307.

[0055] Furthermore, when the connecting spring 308 loses pressure, the one-way valve fixing sleeve 306 and the one-way valve piston rod 304 move upward, and the water at the outlet 104 can be discharged into the anti-backflow valve body 301 through the discharge hole 108, and flow into the drain port 303 through the gap between the anti-backflow valve bodies 301, thus preventing the water at the outlet 104 from flowing back to the inlet 103.

[0056] Specifically, the anti-backflow valve body 301 is connected to the outlet end 104 through the discharge hole 108, and the inlet end 103 is connected to the anti-backflow valve body 301 through the flow hole 109.

[0057] Furthermore, the flow hole 109 and the discharge hole 108 are inclined structures, thereby enabling the normal passage of water and preventing backflow under the action of the flow hole 109 and the discharge hole 108.

[0058] Specifically, a pressure gauge assembly 4 is also connected to the outside of the anti-backflow valve body 301. The pressure gauge assembly 4 includes: a first pressure gauge 401 located on the top of the anti-backflow valve body 301; a second pressure gauge 402 located on the left side of the anti-backflow valve body 301; and a third pressure gauge 403 located below the outlet end 104.

[0059] Furthermore, the pressure gauge assembly 4 is used to detect the pressure at the outlet 104 and the pressure at the anti-backflow valve body 301.

[0060] Specifically, the first pressure gauge 401 and the second pressure gauge 402 are both threadedly connected to the anti-backflow valve body 301, and the third pressure gauge 403 is threadedly connected to the BA valve body 101.

[0061] Furthermore, the first pressure gauge 401, the second pressure gauge 402, and the third pressure gauge 403 can be disassembled according to user needs for convenient use.

[0062] When pressure is generated at the inlet end 103, the movable sleeve 305 of the one-way valve can be pressed down, and the fixed sleeve 306 of the one-way valve moves downward. Water can enter the anti-backflow valve body 301 through the flow hole 109 and flow into the outlet end 104 through the anti-backflow valve body 301, so that the water can pass through normally. When the connecting spring 308 loses pressure, the fixed sleeve 306 of the one-way valve and the piston rod 304 of the one-way valve move upward. Water at the outlet end 104 can be discharged into the anti-backflow valve body 301 through the discharge hole 108 and flow into the drain interface 303 through the gap between the anti-backflow valve bodies 301, so as to prevent water at the outlet end 104 from flowing back to the inlet end 103.

[0063] In summary, the anti-backflow component 3 prevents water from flowing back from the outlet 104 to the inlet 103. At the same time, the detachable pressure gauge component 4 can be disassembled according to user needs for convenient use.

[0064] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0065] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0066] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A BA valve, characterized in that, include: BA valve assembly (1); pressure reducing assembly for reducing inlet water pressure (2); And a backflow prevention component (3) to prevent water backflow; The BA valve assembly (1) includes: a BA valve body (101); a fixed base (102) welded to the front end of the BA valve body (101); a flow hole (109) opened on the side of the fixed base (102); and a discharge hole (108) opened on the other side of the fixed base (102). The pressure reducing assembly (2) includes: a pressure reducing cover (202) welded to the top of the BA valve body (101); and a valve stem (205) that can be lifted and installed inside the pressure reducing cover (202). The anti-backflow assembly (3) includes: a connecting base (302) detachably connected to the front end of the fixed base (102) by bolts; an anti-backflow valve body (301) fixed to one side of the connecting base (302); and a drain port (303) fixed below the anti-backflow valve body (301).

2. The BA valve according to claim 1, characterized in that: The BA valve assembly (1) further includes: an inlet end (103) fixed to the left side of the BA valve body (101); and an outlet end (104) fixed to the right side of the BA valve body (101).

3. The BA valve according to claim 2, characterized in that: The surfaces of the water outlet (104) and the water inlet (103) are both provided with threads, and the interiors of the water outlet (104) and the water inlet (103) are both equipped with shut-off ball valves (105).

4. The BA valve according to claim 3, characterized in that: The BA valve assembly (1) further includes: a filter valve cover (106) threadedly connected to the lower part of the BA valve body (101); and a plastic filter (107) detachably installed inside the filter valve cover (106), wherein the filter valve cover (106) is made of transparent material.

5. The BA valve according to claim 4, characterized in that: The pressure reducing assembly (2) further includes: a diaphragm (204) disposed above the valve stem (205); a support spring (203) disposed above the diaphragm (204); and a spindle (206) located inside the pressure reducing cover (202). The two sets of support springs (203) are respectively sleeved on the outside of the valve stem (205) and the spindle (206). A pressure reducing knob (201) is rotatably installed on the top of the pressure reducing cover (202).

6. The BA valve according to claim 5, characterized in that: The anti-backflow assembly (3) further includes: a piston retainer (307) disposed inside the anti-backflow valve body (301); a one-way valve retainer (306) disposed inside the piston retainer (307); a one-way valve movable sleeve (305) disposed inside the one-way valve retainer (306); and a one-way valve piston rod (304) disposed inside the one-way valve movable sleeve (305).

7. The BA valve according to claim 6, characterized in that: The anti-backflow assembly (3) further includes a connecting spring (308) disposed between the one-way valve piston rod (304) and the one-way valve fixing sleeve (306), and the connecting spring (308) is also disposed between the one-way valve fixing sleeve (306) and the piston fixing bracket (307).

8. The BA valve according to claim 7, characterized in that: The anti-backflow valve body (301) is connected to the outlet end (104) through the discharge hole (108), and the inlet end (103) is connected to the anti-backflow valve body (301) through the flow hole (109).

9. The BA valve according to claim 8, characterized in that: The outside of the anti-backflow valve body (301) is also connected to a pressure gauge assembly (4), which includes: a first pressure gauge (401) disposed on the top of the anti-backflow valve body (301); a second pressure gauge (402) disposed on the left side of the anti-backflow valve body (301); and a third pressure gauge (403) disposed below the water outlet (104).

10. The BA valve according to claim 9, characterized in that: The first pressure gauge (401) and the second pressure gauge (402) are both threadedly connected to the anti-backflow valve body (301), and the third pressure gauge (403) is threadedly connected to the BA valve body (101).

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