High-sensitivity anti-backflow water meter

Abstract

The utility model discloses a high-sensitivity anti-backflow water meter which comprises a water meter body and an anti-backflow mechanism. The water meter main body comprises a dial plate main body, the dial plate main body is rotatably connected with an indicating pointer, and the indicating pointer is rotatably connected with the indicating pointer through a pointer rotating shaft; two sides of the dial plate body are respectively connected with a water inlet pipe and a water outlet pipe; the backflow prevention mechanism comprises control valve plates, the control valve plates are rotationally installed on the water inlet pipe and the water outlet pipe, and the two sets of control valve plates are both connected with control valve rods. The water meter is provided with an anti-backflow mechanism and has an anti-backflow function, when the water meter is used, the water inlet pipe and the water outlet pipe can be sealed at the same time through the design of the control valve plate, the control valve rod, the screw rod and other components, the situation of backflow is effectively prevented, meanwhile, the position of the pointer rotating shaft can be fixed, and the pointer rotating shaft is prevented from rotating when water flow stops. Therefore, the accuracy and the stability of the water meter are guaranteed.

Description

Technical Field

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

[0002] A water meter is an instrument that measures water flow, mostly the cumulative flow of water. It is generally divided into two categories: volumetric water meters and velocity water meters. The shell of an existing water meter is generally marked with the direction of water flow. If the water meter is installed in this direction, the pointer of the water meter counter rotates clockwise to count correctly.

[0003] Existing water meters can measure residents' water use. However, when the faucet is turned off or the equipment fails, water will flow back in the water meter. The backflow of water causes the impeller in the water meter to rotate unnecessary, resulting in inaccurate counting of the water meter, affecting the value of the water meter, and causing the sensitivity and stability of the water meter to decrease, which needs to be improved. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, in order to solve the above technical problems, the utility model provides the following technical solutions: a high-sensitivity backflow prevention type water meter, comprising a water meter body and a backflow prevention mechanism;

[0006] The water meter body comprises a dial body, on which an indicator needle is rotatably connected, and the indicator needle is rotatably connected to the indicator needle through a pointer shaft; both sides of the dial body are respectively connected to a water inlet pipe and a water outlet pipe;

[0007] The anti-backflow mechanism includes a control valve plate, which is rotatably installed on the water inlet pipe and the water outlet pipe. Both sets of control valve plates are connected to a control valve stem, a rotating handle is connected to the control valve stem, a screw is connected to the rotating handle, and a guide slide is threadedly connected to the screw; the front end of the guide slide is connected to a rotating shaft elastic clip, and a rotating shaft elastic clip is provided with a rotating shaft slot used in conjunction with the pointer rotating shaft, and the rotating shaft elastic clip is nested on the pointer rotating shaft through the rotating shaft slot.

[0008] As a preferred solution of the high-sensitivity backflow prevention water meter of the utility model, wherein: the control valve stem is connected to a worm gear, the worm gear is connected to a worm, and the worm gear is fixed on the rotating handle.

[0009] As a preferred solution of the high-sensitivity anti-backflow water meter described in the utility model, the screw is located on one side of the worm gear, the screw is fixed to the middle of the control valve stem, the outside of the control valve stem is sleeved with a control box, and the two ends of the control box are respectively connected to the water inlet pipe and the water outlet pipe.

[0010] As a preferred solution of the high-sensitivity anti-backflow water meter described in the utility model, a guide groove used in conjunction with the guide slide bar is arranged on the dial body, the rack slide groove is fixedly connected to the control box, and the control box is located at the bottom end of the dial body.

[0011] As a preferred solution of the high-sensitivity anti-backflow water meter of the utility model, the cross-section of the water outlet pipe is an "L"-shaped structure, and the water inlet pipe and the water outlet pipe are symmetrically arranged on both sides of the dial body.

[0012] As a preferred solution of the high-sensitivity anti-backflow water meter described in the utility model, an elastic clamp pad is arranged in the rotating shaft slot, the cross-section of the rotating shaft slot is a "C"-shaped structure, an annular groove is opened at the position of the pointer rotating shaft corresponding to the rotating shaft elastic clip, and the rotating shaft elastic clip is embedded in the annular groove.

[0013] Beneficial effects of the utility model:

[0014] The utility model proposes a high-sensitivity backflow prevention type water meter, which is designed with an anti-backflow mechanism and has an anti-backflow function. When in use, the water inlet pipe and the water outlet pipe can be sealed at the same time through the design of components such as the control valve plate, the control valve stem and the screw, thereby effectively preventing the backflow. At the same time, the position of the pointer shaft can be fixed to prevent the pointer shaft from rotating when the water flow stops, thereby ensuring the accuracy and stability of the water meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the internal structure of the utility model when viewed from above.

[0019] Figure 4It is a cross-sectional structural schematic diagram of the utility model.

[0020] Figure 5 It is a partial enlarged structural schematic diagram of the utility model.

[0021] In the figure: 100, water meter body; 101, dial body; 102, indicator needle; 103, pointer shaft; 1031, annular groove; 104, water inlet pipe; 105, water outlet pipe; 106, guide chute;

[0022] 200, anti-backflow mechanism; 201, control valve plate; 202, control valve stem; 203, guide slide; 204, screw; 205, rotating handle; 206, rotating shaft elastic clip; 2061, rotating shaft slot; 207, worm wheel; 208, worm; 209, control box. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] Reference Figures 1 to 5 , is an embodiment of the utility model, which provides a high-sensitivity backflow prevention type water meter, including a water meter body 100 and a backflow prevention mechanism 200;

[0028] The water meter body 100 includes a dial body 101, on which an indicator needle 102 is rotatably connected, and the indicator needle 102 is rotatably connected to the indicator needle 102 through a pointer shaft 103; a guide slide 106 used in conjunction with a guide slide bar 203 is arranged on the dial body 101, and the rack slide is fixedly connected to a control box 209, and the control box 209 is located at the bottom end of the dial body 101; the two sides of the dial body 101 are respectively connected to a water inlet pipe 104 and a water outlet pipe 105, and the cross-section of the water outlet pipe 105 is an "L"-shaped structure, and the water inlet pipe 104 and the water outlet pipe 105 are symmetrically arranged on both sides of the dial body 101.

[0029] The anti-backflow mechanism 200 includes a control valve plate 201, which is rotatably mounted on the water inlet pipe 104 and the water outlet pipe 105. Both sets of control valve plates 201 are connected to a control valve stem 202, and a worm wheel 207 is connected to the control valve stem 202, and a worm 208 is connected to the worm wheel 207, and the worm 208 is fixed to the rotating handle 205; the control valve stem 202 is connected to the rotating handle 205, and a screw 204 is connected to the rotating handle 205, and the screw 204 is threadedly connected to a guide slide 203, and the front end of the guide slide 203 is connected to a rotating shaft elastic clip 206, and the rotating shaft elastic clip 206 is provided with a screw threadedly connected to the pointer rotating shaft 103. The shaft slot 2061 is used in conjunction with the shaft elastic clip 206, and the shaft elastic clip 206 is nested on the pointer shaft 103 through the shaft slot 2061; an elastic clip pad is arranged in the shaft slot 2061, and the cross-section of the shaft slot 2061 is a "C"-shaped structure, and an annular groove 1031 is opened at the position of the pointer shaft 103 corresponding to the shaft elastic clip 206, and the shaft elastic clip 206 is embedded in the annular groove 1031; the screw 204 is located on one side of the worm gear 207, and the screw 204 is fixed to the middle part of the control valve stem 202, and the control valve stem 202 is externally sleeved with a control box 209, and the two ends of the control box 209 are respectively connected to the water inlet pipe 104 and the water outlet pipe 105.

[0030] In this embodiment, before use, the water meter body 100 is installed at the required position to ensure horizontal and stable installation, and the water inlet pipe 104 and the water outlet pipe 105 are connected to the corresponding pipes; when the water meter needs to be used, the rotating handle 205 is turned by hand, so that the rotating handle 205 drives the worm 208 to rotate, and the worm 208 is connected to the worm gear 207 through mechanical transmission, so that the worm gear 207 drives the control valve stem 202 to rotate, and the control valve stem 202 drives the control valve plate 201 to rotate, so that the control valve plate 201 maintains a horizontal state in the water inlet pipe 104 and the water outlet pipe 105, allowing water to flow through the water meter body 100 and measure the water flow; when water enters the water meter body 100, the operator observes the indicator needle 102 on the dial body 101, and the indicator needle 102 will move according to the size of the water flow, indicating the situation of water flowing through the water meter;

[0031] After finishing using water, the user turns the rotating handle 205 by hand, so that the rotating handle 205 drives the worm 208 to rotate, and the worm 208 is connected with the worm wheel 207 through mechanical transmission, so that the worm wheel 207 drives the control valve stem 202 to rotate, and the control valve stem 202 drives the control valve plate 201 to rotate, and the circumferential outer wall of the control valve plate 201 is tightly fitted with the water inlet pipe 104 and the water outlet pipe 105 to prevent backflow; at the same time, the rotating handle 205 drives the screw rod 204 to rotate, and the screw rod 204 is connected with the guide slide bar 203 through mechanical transmission, so that it drives the shaft elastic clip 206 to move forward along the guide slide groove 106, and then the shaft elastic clip 206 is embedded in the annular groove 1031, so as to fix the position of the pointer shaft 103, prevent the water meter body 100 from backflow, and ensure the accuracy of the water meter.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high-sensitivity anti-backflow water meter, characterized in that: It comprises a water meter body (100) and a backflow prevention mechanism (200); The water meter body (100) comprises a dial body (101), an indicator needle (102) is rotatably connected to the dial body (101), and the indicator needle (102) is rotatably connected to the indicator needle (102) via a pointer shaft (103); two sides of the dial body (101) are respectively connected to a water inlet pipe (104) and a water outlet pipe (105); The anti-backflow mechanism (200) comprises a control valve plate (201), the control valve plate (201) is rotatably mounted on a water inlet pipe (104) and a water outlet pipe (105), the two sets of control valve plates (201) are both connected to a control valve stem (202), the control valve stem (202) is connected to a rotating handle (205), the rotating handle (205) is connected to a screw rod (204), the screw rod (204) is threadedly connected to a guide slide bar (203); the front end of the guide slide bar (203) is connected to a rotating shaft elastic clamp (206), the rotating shaft elastic clamp (206) is provided with a rotating shaft slot (2061) used in conjunction with the pointer rotating shaft (103), and the rotating shaft elastic clamp (206) is nested on the pointer rotating shaft (103) through the rotating shaft slot (2061).

2. The high-sensitivity anti-backflow water meter according to claim 1, characterized in that: The control valve stem (202) is connected to a worm wheel (207), the worm wheel (207) is connected to a worm (208), and the worm (208) is fixed on a rotating handle (205).

3. The high-sensitivity anti-backflow water meter according to claim 1, characterized in that: The control valve stem (202) is sleeved with a control box (209) on its exterior, and both ends of the control box (209) are respectively connected to a water inlet pipe (104) and a water outlet pipe (105).

4. The high-sensitivity anti-backflow water meter according to claim 1, characterized in that: The dial body (101) is provided with a guide slide groove (106) used in conjunction with the guide slide bar (203), the rack slide groove is fixedly connected to the control box (209), and the control box (209) is located at the bottom end of the dial body (101).

5. The high-sensitivity anti-backflow water meter according to claim 1, characterized in that: The cross section of the water outlet pipe (105) is in an "L"-shaped structure, and the water inlet pipe (104) and the water outlet pipe (105) are symmetrically arranged on both sides of the dial body (101).

6. The high-sensitivity anti-backflow water meter according to claim 1, characterized in that: An elastic clamp pad is arranged in the rotating shaft slot (2061), and the cross section of the rotating shaft slot (2061) is in a "C"-shaped structure. An annular groove (1031) is provided at a position of the pointer rotating shaft (103) corresponding to the rotating shaft elastic clamp (206), and the rotating shaft elastic clamp (206) is embedded in the annular groove (1031).

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