Anti-backflow water meter

Abstract

The utility model discloses an anti-backflow water meter which comprises an outer shell, a water inlet pipe is installed on the side surface of the outer shell, the anti-backflow water meter further comprises a water meter body, the water meter body is installed inside the outer shell, the other side surface of the outer shell is connected with a water outlet pipe, and the water outlet pipe is connected with an anti-backflow structure. The anti-backflow structure can enable a rotating plate to rotate to push a first water passing plate to close the water outlet pipe when water flows back, the anti-backflow structure comprises a rotating shaft, the rotating shaft is rotationally installed on the surface of the inner wall of the water outlet pipe, and the outer surface of the rotating shaft is fixedly connected with the rotating plate. According to the anti-backflow water meter, the anti-backflow structure is arranged, water flow flows back to push the two rotating plates to form a circular structure for closure, meanwhile, the first water passing plate and the second water passing plate are pushed to be closed, the filtering structure is further arranged, and a filtering net can be rapidly replaced and installed.

Description

Technical Field

[0001] The utility model relates to the technical field of water meters, in particular to a backflow-proof water meter. Background Art

[0002] With the continuous development of industrial economy and urban scale, water meters are being installed and used more and more widely in industry and residents' lives as instruments for measuring water flow. The water meters on the market mainly measure water consumption by driving the impeller blades to rotate through water flow, which drives the gears on the counter to rotate.

[0003] However, the impeller blades in the water meter often rotate in both directions. When water backflow occurs, the backflowing water acts on the impeller blades, causing the impeller blades to reverse. The reversed impeller blades drive the counter to reverse, causing the counter reading to decrease, resulting in inaccurate readings. Utility Model Content

[0004] The utility model aims to provide a water meter with backflow prevention to solve the problem that the backflow of water causes inaccurate reading of the counter as mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backflow-proof water meter, comprising a shell, a water inlet pipe is installed on the side surface of the shell, and also comprises a water meter body, the water meter body is installed inside the shell, and the other side surface of the shell is connected to a water outlet pipe, the water outlet pipe is connected to an anti-backflow structure, and the anti-backflow structure can make a rotating plate rotate to push the water plate to close the water outlet pipe when water flows back.

[0006] Preferably, the backflow prevention structure includes a rotating shaft, which is rotatably installed on the inner wall surface of the water outlet pipe, and the outer surface of the rotating shaft is fixedly connected to a rotating plate, the inner wall surface of the water outlet pipe is installed with an annular baffle, and the outer surface of the annular baffle is symmetrically slidably penetrated by a push plate, one end of the push plate is fixedly installed on the side surface of water pass plate 1, and the other end of the push plate corresponds to the rotating plate, the water pass plate 1 is slidably installed on the bottom surface of the inner wall of the outer shell, and the other side of the water pass plate 1 is correspondingly installed with a water pass plate 2, and the water pass plate 2 is fixedly installed on the inner wall surface of the outer shell.

[0007] By adopting the above technical solution, the water flow can be blocked by rotating the plate.

[0008] Preferably, two rotating shafts are arranged adjacent to each other, and the rotating plate is arranged in a semicircular structure.

[0009] By adopting the above technical solution, the rotating plate is rotated via the rotating shaft.

[0010] Preferably, a filter structure is installed inside the shell, and the filter structure can enable the filter to quickly engage the elastic block by pressing the pressure plate through the pressure block.

[0011] By adopting the above technical solution, the filter can be quickly installed and replaced.

[0012] Preferably, the filter screen has a pressure block connected to its lower surface, an elastic card block is slidably installed on the side surface of the pressure block, a groove is provided on the bottom surface of the inner wall of the shell, a spring is installed on the bottom surface of the groove, and a pressure plate is fixedly connected to the upper end of the spring, and a card slot is provided on the side surface of the groove on the bottom surface of the inner wall of the shell, which is engaged with the elastic card block.

[0013] By adopting the above technical solution, the clamping block can be engaged with the clamping slot by pressing the clamping plate.

[0014] Preferably, an impeller blade is installed in the middle of the filter screen.

[0015] The adoption of the technical solution can protect the impeller blades.

[0016] Preferably, the mesh gaps between the first water pass plate and the second water pass plate correspond to each other.

[0017] By adopting the above technical solution, the water-passing plate 1 and the water-passing plate 2 can form a closed state.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the anti-backflow water meter:

[0019] 1. The anti-backflow water meter is equipped with an anti-backflow structure. When the water flow is normal, the water flow will push the rotating plate to rotate in the direction of the water flow. However, when the water flow is reversed, it will push the two rotating plates to rotate to form a circular structure to block the flow of water.

[0020] 2. Further, the rotation of the rotating plate will push the push plate, and then push the water-passing plate 1, and then the water-passing plate 1 will move to fit with the water-passing plate 2. Since the vertical plate gaps between the water-passing plate 1 and the water-passing plate 2 correspond to each other, the water-passing plate 1 and the water-passing plate 2 fit together to form a closed state, further preventing water from flowing back;

[0021] 3. Furthermore, a filtering structure is provided, in which a filter screen is installed around the impeller blades. When the pressure block at the lower end of the filter screen presses the pressure plate, the elastic card block can engage with the card slot in the groove on the bottom surface of the shell, so that the filter screen can be quickly replaced and installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the shaft side surface structure of the utility model;

[0023] Figure 2This is a schematic diagram of the front sectional structure of the utility model on the axial side;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the rotating plate of the utility model;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model from top view;

[0026] Figure 5 This is a schematic diagram of the front cross-sectional structure of the water outlet pipe of the utility model;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of the pressing block of the utility model.

[0028] In the figure: 1. outer shell; 2. water inlet pipe; 3. water meter body; 4. water outlet pipe; 5. rotating shaft; 6. rotating plate; 7. push plate; 8. annular baffle; 9. water pass plate 1; 10. water pass plate 2; 11. impeller blade; 12. filter screen; 13. pressure block; 14. elastic block; 15. pressure plate; 16. spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6 The utility model provides a technical solution: a backflow prevention water meter, including a shell 1, a water inlet pipe 2, a water meter body 3, a water outlet pipe 4, a rotating shaft 5, a rotating plate 6, a push plate 7, an annular baffle 8, a water pass plate 1 9, a water pass plate 2 10, an impeller blade 11, a filter screen 12, a pressure block 13, an elastic card block 14, a pressure plate 15, and a spring 16. Embodiment 1:

[0031] The anti-backflow water meter is provided with an anti-backflow structure, which can push the push plate 7 by the rotating plate 6 to close the water plate 1 9 and the water plate 2 10 when the water flows back, specifically:

[0032] A water inlet pipe 2 is installed on the side surface of the shell 1, and also includes a water meter body 3. The water meter body 3 is installed inside the shell 1, and the other side surface of the shell 1 is connected to a water outlet pipe 4, and the water outlet pipe 4 is connected to an anti-backflow structure. The anti-backflow structure can make the rotating plate 6 rotate and push the water pass plate 19 to close the water outlet pipe 4 when water flows back. The anti-backflow structure includes a rotating shaft 5, the rotating shaft 5 is rotatably installed on the inner wall surface of the water outlet pipe 4, and the outer surface of the rotating shaft 5 is fixedly connected with the rotating plate 6, the inner wall surface of the water outlet pipe 4 is installed with an annular baffle 8, and the outer surface of the annular baffle 8 is symmetrically slidably penetrated by a push plate 7, one end of the push plate 7 is fixedly installed on the side surface of the water pass plate 19, and the other end of the push plate 7 corresponds to the rotating plate 6, the water pass plate 19 is slidably installed on the bottom surface of the inner wall of the shell 1, and the other side of the water pass plate 19 is correspondingly installed with a water pass plate 2 10, and the water pass plate 2 10 is fixedly installed on the inner wall surface of the shell 1, and two rotating shafts 5 are adjacently arranged;

[0033] When the water flows normally, the anti-backflow water meter Figure 2 As shown, the rotating plate 6 rotatably mounted inside the water outlet pipe 4 via the rotating shaft 5 will be impacted forward, as shown in FIG. Figure 3 As shown, the water flows out and moves to the right under the impact of the water flow through the water-passing plate 9. Figure 2 As shown in the figure, when the water flow backflow occurs, the water flow will impact the rotating plate 6, causing the rotating plate 6 to rotate to the right rear through the rotating shaft 5. The rotating plates 6 with two semicircular structures will form a circle under the impact of the water flow to block the water flow. Then the rotating plate 6 will continue to rotate to the right rear, contact one end of the push plate 7, and push the push plate 7, so that the push plate 7 slides through the annular baffle 8, as shown in the figure. Figure 3 As shown, the other end of the push plate 7 will simultaneously push the water-passing plate 19, so that the water-passing plate 19 is close to the water-passing plate 2 10. Then, after the water-passing plate 19 and the water-passing plate 2 10 are fitted together, since the vertical plates and gaps of the water-passing plate 19 and the water-passing plate 2 10 correspond to each other, the water-passing plate 19 and the water-passing plate 2 10 are closed to prevent the water from continuing to flow back. Embodiment 2:

[0034] The anti-backflow water meter is provided with a filtering structure, and the elastic block 14 can be quickly engaged by pressing the pressure plate 15 through the pressure block 13, specifically:

[0035] A filtering structure is installed inside the housing 1. The filtering structure can enable the filter screen 12 to press the pressure plate 15 through the pressure block 13 so that the elastic card block 14 is quickly engaged. The filtering structure includes the filter screen 12, the lower surface of the filter screen 12 is connected with the pressure block 13, and the side surface of the pressure block 13 is slidably mounted with the elastic card block 14. The bottom surface of the groove is installed with a spring 16, and the upper end of the spring 16 is fixedly connected with the pressure plate 15. The side surface of the groove on the bottom surface of the inner wall of the housing 1 is provided with a card groove, and the card groove is engaged with the elastic card block 14.

[0036] Installing the impeller blade 11 in the middle of the filter screen 12 can reduce the adhesion of impurities to the impeller blade 11. When the filter screen 12 is replaced and installed, Figure 6 As shown, the pressing block 13 at the lower end of the filter 12 is inserted into the groove provided on the bottom surface of the inner wall of the shell 1, and then the pressing plate 15 is pressed to compress the spring 16. Then the elastic block 14 on the side surface of the pressing block 13 can retract when the pressing block 13 is inserted into the groove, and then pop out in the groove provided on the side surface of the groove and engage with the groove. The filter 12 can be quickly installed, making the filter 12 easy to replace and easier to install.

[0037] Working principle: When using the anti-backflow water meter, the anti-backflow structure can be used to rotate the plate 6 to block the flow, and the water pass plate 1 9 and the water pass plate 2 10 are closed. The filtering structure can enable the filter screen 12 to be quickly installed through the elastic block 14, thereby increasing the overall practicality.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A backflow prevention water meter, comprising a housing (1), a water inlet pipe (2) being installed on a side surface of the housing (1), Features: The water meter also comprises a water meter body (3), the water meter body (3) being installed inside the housing (1), and a water outlet pipe (4) being connected to the other side surface of the housing (1), the water outlet pipe (4) being connected to an anti-backflow structure, the anti-backflow structure being capable of causing the rotating plate (6) to rotate and push the water plate (9) to close the water outlet pipe (4) when water flows back.

2. A water meter for preventing backflow according to claim 1, Features: The backflow prevention structure comprises a rotating shaft (5), the rotating shaft (5) is rotatably mounted on the inner wall surface of the water outlet pipe (4), and the outer surface of the rotating shaft (5) is fixedly connected to a rotating plate (6), the inner wall surface of the water outlet pipe (4) is mounted with an annular baffle (8), and the outer surface of the annular baffle (8) is symmetrically slidably penetrated by a push plate (7), one end of the push plate (7) is fixedly mounted on the side surface of a water pass plate 1 (9), and the other end of the push plate (7) corresponds to the rotating plate (6), the water pass plate 1 (9) is slidably mounted on the bottom surface of the inner wall of the outer shell (1), and the other side of the water pass plate 1 (9) is correspondingly mounted with a water pass plate 2 (10), and the water pass plate 2 (10) is fixedly mounted on the inner wall surface of the outer shell (1).

3. A backflow prevention water meter according to claim 2, Features: Two rotating shafts (5) are arranged adjacent to each other, and the rotating plate (6) is arranged in a semicircular structure.

4. A backflow prevention water meter according to claim 1, Features: A filtering structure is installed inside the housing (1), and the filtering structure enables the filter screen (12) to press the pressing plate (15) through the pressing block (13) so that the elastic clamping block (14) is quickly clamped.

5. A backflow prevention water meter according to claim 4, Features: The filtering structure comprises a filter screen (12), a pressing block (13) is connected to the lower surface of the filter screen (12), an elastic clamping block (14) is slidably mounted on the side surface of the pressing block (13), a groove is provided on the bottom surface of the inner wall of the housing (1), a spring (16) is mounted on the bottom surface of the groove, and a pressing plate (15) is fixedly connected to the upper end of the spring (16), and a clamping groove is provided on the side surface of the groove on the bottom surface of the inner wall of the housing (1), and the clamping groove is clamped and connected with the elastic clamping block (14).

6. A backflow prevention water meter according to claim 5, Features: An impeller blade (11) is installed in the middle of the filter screen (12).

7. A backflow prevention water meter according to claim 2, Features: The water-passing plate 1 (9) and the water-passing plate 2 (10) correspond to the gaps between the mesh strips.

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