Backflow prevention tap water direct drinking water meter

Abstract

The utility model provides an anti-backflow tap water direct drinking water meter which comprises a water meter body, a water outlet pipe and a water inlet pipe, the water outlet pipe and the water inlet pipe are communicated with the outer side of the water meter body, a first connecting pipe is communicated with the outer side of one end of the water inlet pipe, an adapter pipe is arranged on the outer side of one end of the first connecting pipe, and a first sealing plug is sleeved with the top end of the adapter pipe in a threaded mode. A second sealing plug is sleeved with the interior of the bottom end of the adapter pipe in a threaded mode, a second connecting pipe is arranged on the outer side of the bottom end of the adapter pipe, a first annular boss is arranged on the inner wall of the adapter pipe, and a sealing ring and a filter screen which are located between the first sealing plug and the first annular boss are sleeved with the interior of the adapter pipe. According to the anti-backflow tap water direct drinking water meter, limiting of the sealing ring and the filter screen can be relieved by detaching the first sealing plug, so that the filter screen can be detached, replaced or cleaned conveniently, meanwhile, impurities filtered by the filter screen can be deposited on the inner side of the circular groove to be collected, and at the moment, the impurities can be cleaned by detaching the second sealing plug.

Description

Technical Field

[0001] The utility model relates to the technical field of water meters, and specifically discloses a backflow-proof tap water direct drinking water meter. Background Art

[0002] Tap water can be consumed directly after filtration. By installing a direct drinking water meter, the water consumption can be measured and the meter reading data can be uploaded regularly, which is convenient to use.

[0003] The existing direct drinking water meter is equipped with a filter in the water inlet pipe, which can filter out fine impurities in the water. However, the direct drinking water meter needs to be disassembled when the filter is replaced, which is very inconvenient. In addition, when tap water flows back in the direct drinking water meter pipe, the measured data will be inaccurate. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a backflow-proof tap water direct drinking water meter, comprising a water meter body and a water outlet pipe and a water inlet pipe connected to the outside of the water meter body, the outside of one end of the water inlet pipe is connected to a first connecting pipe, a transfer pipe is arranged on the outside of one end of the first connecting pipe, the internal thread of the top end of the transfer pipe is sleeved with a first sealing plug, and the internal thread of the bottom end of the transfer pipe is sleeved with a second sealing plug, a second connecting pipe is arranged on the outside of the bottom end of the transfer pipe, a first annular boss is arranged on the inner wall of the transfer pipe, a sealing ring and a filter net located between the first sealing plug and the first annular boss are sleeved inside the transfer pipe, a drainage groove is penetrated through the inner side of the first sealing plug, and an anti-backflow mechanism is sleeved inside the first sealing plug.

[0005] Preferably, the anti-backflow mechanism includes a sealing column movably sleeved inside the first sealing plug and located outside the drainage groove, and a clamping ring clamped on the inner side of the bottom end of the first sealing plug and located below the sealing column. A spring sleeved inside the first sealing plug is placed on the top of the sealing column.

[0006] Preferably, a circular groove is formed inside the second sealing plug.

[0007] Preferably, a pressure relief groove runs through the interior of the first sealing plug, and a second annular boss is arranged on the outer side of the bottom end of the first sealing plug. Beneficial Effects

[0008] 1. The anti-backflow tap water direct drinking water meter can release the limit of the sealing ring and the filter by removing the first sealing plug, so as to facilitate the removal, replacement or cleaning of the filter. At the same time, the impurities filtered by the filter can be precipitated on the inner side of the circular groove for collection. At this time, the impurities can be cleaned by removing the second sealing plug.

[0009] 2. The anti-backflow tap water direct drinking water meter can drive the sealing column to move downward through the elastic force of the spring, and then the drainage trough can be blocked by the sealing column, so that the water in the direct drinking water meter pipe will not flow back, thereby improving the measurement accuracy of the direct drinking water meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a partial cross-sectional view of the structure of the utility model;

[0013] Figure 3 It is a schematic diagram of the first sealing plug of the utility model.

[0014] In the figure: 1. water meter body; 2. water outlet pipe; 3. water inlet pipe; 4. first connecting pipe; 5. adapter pipe; 6. first sealing plug; 7. second sealing plug; 8. second connecting pipe; 9. first annular boss; 10. sealing ring; 11. filter screen; 12. drain groove; 13. backflow prevention mechanism; 131. sealing column; 132. retaining ring; 133. spring; 14. circular groove; 15. pressure relief groove; 16. second annular boss. DETAILED DESCRIPTION

[0015] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0016] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0017] See also Figure 1-3, a backflow-proof tap water direct drinking water meter, comprising a water meter body 1 and a water outlet pipe 2 and a water inlet pipe 3 connected to the outside of the water meter body 1, the outside of one end of the water inlet pipe 3 is connected with a first connecting pipe 4, the outside of one end of the first connecting pipe 4 is provided with a transfer pipe 5, the internal thread sleeve of the top of the transfer pipe 5 is connected with a first sealing plug 6, and the internal thread sleeve of the bottom end of the transfer pipe 5 is connected with a second sealing plug 7, the outside of the bottom end of the transfer pipe 5 is provided with a second connecting pipe 8, the inner wall of the transfer pipe 5 is provided with a first annular boss 9, the interior of the transfer pipe 5 is sleeved with a sealing ring 10 and a filter screen 11 located between the first sealing plug 6 and the first annular boss 9, the sealing ring 10 allows the first sealing plug 6 to be tightened and fixed to stably press and fix the filter screen 11 above the first annular boss 9, the inner side of the first sealing plug 6 is penetrated by a drainage groove 12, the water filtered by the filter screen 11 can flow to the inside of the first connecting pipe 4 through the drainage groove 12, and the interior of the first sealing plug 6 is provided with an anti-backflow mechanism 13.

[0018] Among them, the anti-backflow mechanism 13 includes a sealing column 131 movably sleeved inside the first sealing plug 6 and located on the outside of the drainage groove 12, and a clamping ring 132 clamped on the inner side of the bottom end of the first sealing plug 6 and located below the sealing column 131. The clamping ring 132 can limit the sealing column 131 while preventing the sealing column 131 from falling off from the inside of the first sealing plug 6, and the clamping ring 132 can make the sealing column 131 push the sealing column 131 to stay on the outside of the drainage groove 12 under the elastic force of the spring 133. At this time, the drainage groove 12 can be blocked by the sealing column 131 to prevent the water inside the direct drinking water meter pipe from flowing back. The top of the sealing column 131 is provided with a spring 133 sleeved on the inner side of the first sealing plug 6.

[0019] Among them, a circular groove 14 is opened inside the second sealing plug 7, and impurities precipitated inside the transfer tube 5 after being filtered by the filter net 11 can be collected through the circular groove 14, and the collected impurities can be cleaned by disassembling the second sealing plug 7. At the same time, by disassembling the second sealing plug 7, the water inside the transfer tube 5 can be discharged to the outside, so as to facilitate the disassembly of the filter net 11.

[0020] Among them, a pressure relief groove 15 runs through the interior of the first sealing plug 6, and the pressure relief groove 15 allows the sealing column 131 to discharge water inside the first sealing plug 6 to the outside through the pressure relief groove 15 during the upward movement, so as to avoid water gathering above the sealing column 131, so that when the user uses water, the water transported from the second connecting pipe 8 to the inside of the transfer pipe 5 can press the sealing column 131 to move and compress the spring 133 at the same time, so that the water can be transported to the inside of the first connecting pipe 4 through the drainage groove 12, and a second annular boss 16 is provided on the outside of the bottom end of the first sealing plug 6, and the second annular boss 16 can increase the contact area with the sealing ring 10, so that after the first sealing plug 6 is tightened, the filter screen 11 can be pressed and fixed above the first annular boss 9 through the sealing ring 10.

[0021] When the direct drinking water meter is working, water is transported to the inside of the transfer tube 5 through the second connecting pipe 8. After the water is filtered through the filter screen 11, the sealing column 131 is pressed to move and the spring 133 is compressed. At this time, the water is transported to the inside of the first connecting pipe 4 through the drainage groove 12. The water transported to the inside of the first connecting pipe 4 is transported to the inside of the water meter body 1 through the water inlet pipe 3. After the water flow is measured by the water meter body 1, the water is transported to the user end through the water outlet pipe 2. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A backflow-proof tap water direct drinking water meter, comprising a water meter body (1) and a water outlet pipe (2) and a water inlet pipe (3) connected to the outside of the water meter body (1), characterized in that: The outer side of one end of the water inlet pipe (3) is connected to a first connecting pipe (4), the outer side of one end of the first connecting pipe (4) is provided with a transfer pipe (5), the top end of the transfer pipe (5) is internally threadedly sleeved with a first sealing plug (6), and the bottom end of the transfer pipe (5) is internally threadedly sleeved with a second sealing plug (7), the outer side of the bottom end of the transfer pipe (5) is provided with a second connecting pipe (8), the inner wall of the transfer pipe (5) is provided with a first annular boss (9), the interior of the transfer pipe (5) is sleeved with a sealing ring (10) and a filter screen (11) located between the first sealing plug (6) and the first annular boss (9), the inner side of the first sealing plug (6) is penetrated by a drainage groove (12), and the interior of the first sealing plug (6) is sleeved with an anti-backflow mechanism (13).

2. The anti-backflow tap water direct drinking water meter according to claim 1, characterized in that: The backflow prevention mechanism (13) comprises a sealing column (131) sleeved inside the first sealing plug (6) and located outside the drainage groove (12), and a clamping ring (132) clamped inside the bottom end of the first sealing plug (6) and located below the sealing column (131); a spring (133) sleeved inside the first sealing plug (6) is placed on the top of the sealing column (131).

3. The anti-backflow tap water direct drinking water meter according to claim 1, characterized in that: A circular groove (14) is provided inside the second sealing plug (7).

4. The anti-backflow tap water direct drinking water meter according to claim 2, characterized in that: A pressure relief groove (15) runs through the interior of the first sealing plug (6), and a second annular boss (16) is provided on the outer side of the bottom end of the first sealing plug (6).

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