Water meter dismounting alarm device

Abstract

The utility model provides a water meter dismounting alarm device which is characterized in that a mounting box is fixedly arranged on a meter core fixing cover, and an alarm device is fixedly arranged in a mounting cavity; the power supply is fixedly arranged in the mounting cavity; the first switch is tubular, and a conducting medium is arranged in the first switch; a plurality of wires are arranged in the mounting cavity, the wires connect the alarm device and the power supply to form an alarm circuit, a first contact and a second contact are arranged at the disconnection position of the alarm circuit and are arranged on the side wall of the first switch, and when the first switch is arranged in the forward direction, the alarm circuit is disconnected; when the first switch is inverted, the conductive medium enables the first contact and the second contact to be connected, the alarm circuit is closed, and the alarm device sends an alarm signal to a worker. According to the water meter, the alarm circuit composed of the alarm device, the power source, the first switch and the wire is arranged, in the process of disassembling the water meter, the water meter needs to be rotated, the first switch is inevitably inverted, an alarm is given, and the anti-disassembling alarm function is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water meters, and more specifically relates to a water meter disassembly alarm device. Background Art

[0002] A water meter is an instrument for measuring water flow, most of which measure the cumulative flow of water. It is generally divided into two categories: volumetric water meter and velocity water meter. The structure of a water meter generally includes a shell with a water inlet, an inner cavity and a water outlet. A flow path is formed between the water inlet, the inner cavity and the water outlet. The inner cavity is equipped with a metering device that can respond to the flowing water in the flow path and measure its water volume. The metering device can be of various types and is generally composed of a reading part and a metering part.

[0003] At present, when a water meter is used, it needs to be installed on the pipeline, and the staff regularly records the readings of the water meter and calculates the corresponding water fee based on the difference between the two readings of the water meter. However, some lawless persons will dismantle the water meter to steal water, which causes serious waste of public resources. Utility Model Content

[0004] The utility model aims to provide a water meter disassembly alarm device to prevent the water meter from being disassembled privately.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a water meter disassembly alarm device, comprising an installation box, a cover body, an alarm device, a power supply, a first switch and a plurality of wires, wherein the installation box is fixedly arranged on a core fixing cover of the water meter, an installation cavity is arranged in the installation box, and the top of the installation box is opened; the cover body is detachably arranged at the open end of the installation box; the alarm device is fixedly arranged in the installation cavity; the power supply is fixedly arranged in the installation cavity; the first switch is tubular, and a conductive medium is arranged in the first switch; a plurality of wires are arranged in the installation cavity, the wires connect the alarm device and the power supply to form an alarm circuit, the alarm circuit is disconnected, and the disconnection point of the alarm circuit is a first contact and a second contact, the first contact and the second contact are arranged on the side wall of the first switch, when the first switch is set in the forward direction, the alarm circuit is disconnected; when the first switch is set in the reverse direction, the conductive medium conducts the first contact and the second contact, the alarm circuit is closed, and the alarm device sends an alarm signal to the staff.

[0006] In a possible implementation, the first switch includes a first conductive tube, an isolation tube and a second conductive tube, wherein the first conductive tube is supported by a conductive material, and the first contact is arranged on a side wall of the first conductive tube; the isolation tube is arranged on a top of the first conductive tube, and the isolation tube is made of an insulating material; the second conductive tube is made of a conductive material, the second contact is arranged on a side wall of the second conductive tube, and the second conductive tube is arranged on a top of the isolation tube; the conductive medium includes a conductive rod, and the conductive rod is inserted into the first switch, and the length of the conductive rod is not greater than the sum of the lengths of the first conductive tube and the isolation tube, and the length of the conductive rod is not less than the sum of the lengths of the second conductive tube and the isolation tube.

[0007] In a possible implementation, the installation box is made of metal material, and the installation box is welded and fixed to the meter core fixing cover of the water meter; a first insulating block is provided on the inner bottom surface of the installation box, and the first conductive tube is provided on the top of the first insulating block; a second insulating block is provided on the bottom of the cover body, and when the cover body is buckled on the installation box, the second insulating block abuts against the top of the second conductive tube.

[0008] In a possible implementation, the conductive rod is made of a magnetic material; a mounting groove is provided at the bottom of the second insulating block, a permanent magnet is provided in the mounting groove, and when the first switch is inverted, the conductive rod is adsorbed and fixed by the permanent magnet.

[0009] In a possible implementation, the alarm circuit includes a first branch and a second branch, the first branch and the second branch are arranged in parallel, and the first contact and the second contact are arranged in the first branch; a third contact and a fourth contact are provided in the second branch, and a second switch is connected between the third contact and the fourth contact. When the cover is opened, the second switch is closed, and the alarm device sends an alarm signal to the staff.

[0010] In a possible implementation, the second switch includes a first conductive plate, a second conductive plate, a third conductive plate, a first spring and a first push rod, wherein the first conductive plate is connected to the third contact, and the first conductive plate is arranged in the installation cavity; the second conductive plate is connected to the fourth contact, and the second conductive plate is arranged in the installation cavity, and the first conductive plate and the second conductive plate are arranged at intervals; the third conductive plate is slidably arranged in the installation cavity; the first spring is arranged between the third conductive plate and the inner bottom surface of the installation box, and when the first spring is in a natural state, the third conductive plate connects the first conductive plate and the second conductive plate; the first push rod is arranged at the bottom of the cover body, and when the cover body is buckled on the installation box, the first push rod abuts against the third conductive plate, and the length of the first push rod is greater than the distance between the third conductive plate and the cover body when the first spring is in a natural state.

[0011] In a possible implementation, two through holes are provided on the bottom surface of the installation box, and a second push rod is inserted into the through hole, and the conductive rod can partially extend out of the installation box due to sliding, one of the second push rods is connected to the first conductive plate, and the other second push rod is connected to the second conductive plate, and when the core fixing cover of the water meter is fixed on the outer shell of the water meter, the bottom of the second push rod abuts against the outer shell, and the first conductive plate and the second conductive plate are both spaced apart from the third conductive plate.

[0012] In a possible implementation, a second spring is provided at the bottom of the first conductive plate and the second conductive plate, the other end of the second spring is connected to the inner bottom surface of the installation box, the cover body is fixed on the installation box, and when the second spring is in a natural state, the first conductive plate and the second conductive plate are connected to the third conductive plate, and the bottom of the second push rod extends out of the installation box.

[0013] In a possible implementation, the cover body is provided with a plurality of first threaded holes, and the top end of the side wall of the installation box is provided with a plurality of second threaded holes, the first threaded holes correspond to the second threaded holes one by one, and bolts are threaded into the corresponding first threaded holes and the second threaded holes, so that the cover body is fixed on the installation box.

[0014] The beneficial effect of the water meter disassembly alarm device provided by the utility model is that: compared with the prior art, the utility model sets an alarm circuit composed of an alarm device, a power supply, a first switch and a wire, so that when the first switch is set in the forward direction, the alarm circuit is disconnected, and when the first switch is set in the reverse direction, the alarm circuit is closed, and the alarm device sends an alarm signal to the staff. In the process of disassembling the water meter, the water meter needs to be rotated, which will inevitably invert the first switch, which will cause an alarm, thereby realizing the anti-dismantling alarm function and reducing the waste of public water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic diagram of the structure of the water meter disassembly alarm device provided by the embodiment of the utility model when in operation;

[0017] Figure 2 A schematic diagram of the structure of the installation box provided by the embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the main structure of the alarm circuit provided by an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of the structure of a first switch provided in an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of the structure of a second switch provided in an embodiment of the utility model.

[0021] Among them, the reference numerals in the figures are as follows:

[0022] 1. Installation box; 2. Meter core fixing cover; 3. Alarm device; 4. Power supply; 5. First switch; 6. Second switch; 7. Lead wire; 8. Cover; 9. Casing;

[0023] 101, mounting cavity; 102, first insulating block; 103, second threaded hole; 104, via hole;

[0024] 501, first conductive tube; 502, isolation tube; 503, second conductive tube; 504, conductive rod;

[0025] 601, first conductive plate; 602, second conductive plate; 603, third conductive plate; 604, first spring; 605, second push rod; 606, second spring;

[0026] 701, first contact point; 702, second contact point; 703, third contact point; 704, fourth contact point;

[0027] 801, second insulating block; 802, permanent magnet; 803, first push rod; 804, first threaded hole. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0030] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0031] The directions or positional relationships indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0033] The water meter disassembly alarm device provided by the utility model is now described.

[0034] Please also read Figure 1 and Figure 3The water meter disassembly alarm device comprises an installation box 1, a cover, an alarm device 3, a power source 4, a first switch 5 and a plurality of wires 7, wherein the installation box 1 is fixedly mounted on the core fixing cover 2 of the water meter, and an installation cavity 101 is arranged in the installation box 1, and the top of the installation box 1 is opened. The cover can be detachably arranged at the opening end of the installation box 1. The alarm device 3 is fixedly arranged in the installation cavity 101. The power source 4 is fixedly arranged in the installation cavity 101. The first switch 5 is tubular, and a conductive medium is arranged in the first switch 5. A plurality of wires 7 are arranged in the installation cavity 101, and the wires 7 connect the alarm device 3 and the power source 4 to form an alarm circuit. The alarm circuit is disconnected, and the disconnection point of the alarm circuit is the first contact 701 and the second contact 702. The first contact 701 and the second contact 702 are arranged on the side wall of the first switch 5. When the first switch 5 is set in the forward direction, the alarm circuit is disconnected. When the first switch 5 is reversely set, the conductive medium connects the first contact 701 and the second contact 702, the alarm circuit is closed, and the alarm device 3 sends an alarm signal to the staff.

[0035] The beneficial effect of the water meter disassembly alarm device provided in the present embodiment is as follows: compared with the prior art, the water meter disassembly alarm device provided in the present embodiment sets an alarm circuit composed of an alarm device 3, a power supply 4, a first switch 5 and a wire 7, so that when the first switch 5 is set in the forward direction, the alarm circuit is disconnected, and when the first switch 5 is set in the reverse direction, the alarm circuit is closed, and the alarm device 3 sends an alarm signal to the staff. In the process of disassembling the water meter, the water meter needs to be rotated, which will inevitably invert the first switch 5, which will cause an alarm, thereby realizing the anti-dismantling alarm function and reducing the waste of public water resources.

[0036] like Figure 4 As shown, the first switch 5 includes a first conductive tube 501, an isolation tube 502 and a second conductive tube 503, wherein the first conductive tube 501 is supported by a conductive material, and a first contact 701 is arranged on the side wall of the first conductive tube 501. The isolation tube 502 is arranged on the top of the first conductive tube 501, and the isolation tube 502 is made of an insulating material. The second conductive tube 503 is made of a conductive material, and the second contact 702 is arranged on the side wall of the second conductive tube, and the second conductive tube is arranged on the top of the isolation tube 502. The conductive medium includes a conductive rod 504, and the conductive rod 504 is inserted in the first switch 5, and the length of the conductive rod 504 is not greater than the sum of the lengths of the first conductive tube 501 and the isolation tube 502, and the length of the conductive rod 504 is not less than the sum of the lengths of the second conductive tube and the isolation tube 502.

[0037] When in use, the first switch 5 is upright, and the top of the conductive rod 504 does not exceed the top of the insulating tube, so that the first contact 701 and the second contact 702 are not conducting, and no alarm is triggered. When the criminals dismantle the water meter, they will rotate the water meter, and the first switch 5 will be inverted during the rotation of the water meter. At this time, the conductive rod 504 slides toward the second conductive tube 503. Since the length of the conductive rod 504 is greater than the sum of the lengths of the second conductive tube 503 and the insulating tube, when the first switch 5 is inverted, one end of the conductive rod 504 is connected to the first conductive tube 501, and the other end is connected to the second conductive tube 503, so that the first contact 701 and the second contact 702 are conducting, and an alarm is triggered.

[0038] As a preferred technical solution, the installation box 1 is made of metal material, and the installation box 1 is welded and fixed on the meter core fixing cover 2 of the water meter. A first insulating block 102 is provided on the inner bottom surface of the installation box 1, and the first conductive tube is provided on the top of the first insulating block 102. A second insulating block 801 is provided at the bottom of the cover body, and when the cover body is buckled on the installation box 1, the second insulating block 801 abuts against the top of the second conductive tube. The arrangement of the first insulating block 102 and the second insulating block 801 prevents the first contact 701 and the second contact 702 from being conductive because the installation box 1 is made of metal.

[0039] In addition, the conductive rod 504 is made of a magnetic material. An embedding groove is provided at the bottom of the second insulating block 801, and a permanent magnet 802 is provided in the embedding groove. When the first switch 5 is inverted, the conductive rod 504 is adsorbed and fixed by the permanent magnet 802. The arrangement of the permanent magnet 802 ensures that once the first switch 5 is inverted, the conductive rod 504 will be adsorbed by the permanent magnet 802, the alarm circuit is always in a closed state, and the alarm device 3 will always sound an alarm.

[0040] In this embodiment, the alarm circuit includes a first branch and a second branch, the first branch and the second branch are arranged in parallel, and the first contact 701 and the second contact 702 are arranged in the first branch. The second branch is provided with a third contact 703 and a fourth contact 704, and a second switch 6 is connected between the third contact 703 and the fourth contact 704. When the cover is opened, the second switch 6 is closed, and the alarm device 3 sends an alarm signal to the staff. The setting of the second switch 6 ensures that once someone wants to open the cover to damage the components in the installation box 1, the water meter disassembly alarm device of the utility model will immediately alarm, thereby obtaining a better water meter disassembly prevention effect.

[0041] Specifically, if Figure 5As shown, the second switch 6 includes a first conductive plate 601, a second conductive plate 602, a third conductive plate 603, a first spring 604 and a first push rod 803, wherein the first conductive plate 601 is connected to the third contact 703, and the first conductive plate 601 is arranged in the installation cavity 101. The second conductive plate 602 is connected to the fourth contact 704, and the second conductive plate 602 is arranged in the installation cavity 101, and the first conductive plate 601 and the second conductive plate 602 are arranged at intervals. The third conductive plate 603 is slidably arranged in the installation cavity 101. The first spring 604 is arranged between the third conductive plate 603 and the inner bottom surface of the installation box 1, and when the first spring 604 is in a natural state, the third conductive plate connects the first conductive plate 601 and the second conductive plate 602. The first push rod 803 is arranged at the bottom of the cover body 8. When the cover body 8 is buckled on the installation box 1, the first push rod 803 abuts against the third conductive plate. The length of the first push rod 803 is greater than the distance between the third conductive plate and the cover body 8 when the first spring 604 is in the natural state.

[0042] When the second switch 6 is in use, the first push rod 803 will abut against the third conductive plate 603 due to the installation of the cover 8, and because the length of the first push rod 803 is greater than the distance between the third conductive plate and the cover 8 when the first spring 604 is in the natural state, the first push rod 803 will push the third conductive plate 603 to slide down, thereby separating the third conductive plate 603 from the first conductive plate 601 and the second conductive plate 602, and the alarm device 3 will not alarm, and the first spring 604 is in an energy storage state at this time. When the cover 8 is removed, the thrust of the first push rod 803 on the third conductive plate 603 is removed, and at this time, the first spring 604 releases energy, so that the third conductive plate 603 abuts against the first conductive plate 601 and the second conductive plate 602, and at this time, the third contact 703 and the fourth contact 704 are connected, and the alarm device 3 alarms.

[0043] like Figure 2 and Figure 5 As shown, two through holes 104 are provided on the bottom surface of the installation box 1, and a second push rod 605 is inserted in the through hole 104, and the conductive rod 504 can partially extend out of the installation box 1 due to sliding, one of the second push rods 605 is connected to the first conductive plate 601, and the other second push rod 605 is connected to the second conductive plate 602. When the core fixing cover 2 of the water meter is fixed on the shell 9 of the water meter, the bottom of the second push rod 605 abuts against the shell 9, and the first conductive plate and the second conductive plate are both spaced apart from the third conductive plate. When the criminals intend to open the core fixing cover 2 of the water meter, the shell 9 of the water meter no longer blocks the second push rod 605. At this time, the second push rod 605 will drive the first conductive plate 601 and the second conductive plate 602 to move downward due to gravity, so that the first conductive plate 601 and the second conductive plate 602 are both abutted against the third conductive plate 603, so that the third contact 703 and the fourth contact 704 are connected, and the alarm device 3 starts to alarm.

[0044] Preferably, the bottom of the first conductive plate and the second conductive plate are both provided with a second spring 606, and the other end of the second spring 606 is connected to the inner bottom surface of the installation box 1, the cover 8 is fixed on the installation box 1, and when the second spring 606 is in a natural state, the first conductive plate and the second conductive plate are both connected to the third conductive plate, and the bottom of the second push rod 605 extends out of the installation box 1. When the meter movement fixing cover 2 is installed in place, the second spring 606 will store energy due to the upward movement of the first conductive plate 601 and the second conductive plate 602. Once the lawless elements remove the meter movement fixing cover 2, the second push rod 605 loses the obstruction of the outer shell 9 of the water meter, and the second spring 606 releases energy to help the first conductive plate 601 and the second conductive plate 602 move downward, so as to prevent the gravity of the second push rod 605 and the first conductive plate 601 or the gravity of the second push rod 605 and the second conductive plate 602 from being insufficient to drive the second push rod 605 to move downward due to dirt or rust.

[0045] Finally, a plurality of first threaded holes 804 are provided on the cover body 8, and a plurality of second threaded holes 103 are provided on the top of the side wall of the installation box 1. The first threaded holes 804 correspond to the second threaded holes 103 one by one, and bolts are screwed into the corresponding first threaded holes 804 and second threaded holes 103, so that the cover body 8 is fixed on the installation box 1. Such a configuration can facilitate the installation and disassembly of the cover body 8, and facilitate the maintenance or replacement of the components in the installation box 1.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water meter disassembly alarm device, characterized in that: include: An installation box (1) is fixedly mounted on a meter core fixing cover (2) of the water meter, wherein an installation cavity (101) is provided in the installation box (1), and the top of the installation box (1) is opened; A cover body, detachably arranged on the opening end of the installation box (1); An alarm device (3) fixedly arranged in the installation cavity (101); A power source (4) fixedly disposed in the installation cavity (101); The first switch (5) is tubular, and a conductive medium is provided inside the first switch (5); A plurality of wires (7) are arranged in the installation cavity (101); the wires (7) connect the alarm device (3) and the power supply (4) to form an alarm circuit; the alarm circuit is disconnected, and the disconnection point of the alarm circuit is a first contact (701) and a second contact (702); the first contact (701) and the second contact (702) are arranged on the side wall of the first switch (5); when the first switch (5) is set in a forward direction, the alarm circuit is disconnected; when the first switch (5) is set in a reverse direction, the conductive medium connects the first contact (701) and the second contact (702), the alarm circuit is closed, and the alarm device (3) sends an alarm signal to a staff member.

2. The water meter disassembly alarm device according to claim 1, characterized in that: The first switch (5) comprises: A first conductive tube (501) is supported by a conductive material, wherein the first contact point (701) is arranged on a side wall of the first conductive tube (501); An isolation tube (502) is arranged on the top of the first conductive tube (501), and the isolation tube (502) is made of insulating material; A second conductive tube (503) is supported by a conductive material, the second contact point (702) is arranged on the side wall of the second conductive tube, and the second conductive tube is arranged on the top of the isolation tube (502); The conductive medium comprises a conductive rod (504), the conductive rod (504) being inserted into the first switch (5), the length of the conductive rod (504) being no greater than the sum of the lengths of the first conductive tube (501) and the isolation tube (502), and the length of the conductive rod (504) being no less than the sum of the lengths of the second conductive tube and the isolation tube (502).

3. The water meter disassembly alarm device according to claim 2, characterized in that: The installation box (1) is made of a metal material, and the installation box (1) is welded and fixed on a core fixing cover (2) of the water meter; A first insulating block (102) is provided on the inner bottom surface of the installation box (1), and the first conductive tube is provided on the top of the first insulating block (102); a second insulating block (801) is provided on the bottom of the cover body, and when the cover body is buckled onto the installation box (1), the second insulating block (801) abuts against the top of the second conductive tube.

4. The water meter disassembly alarm device according to claim 3, characterized in that: The conductive rod (504) is made of a magnetic material; The bottom of the second insulating block (801) is provided with an embedding groove, and a permanent magnet (802) is provided in the embedding groove. When the first switch (5) is inverted, the conductive rod (504) is adsorbed and fixed by the permanent magnet (802).

5. The water meter disassembly alarm device according to claim 4, characterized in that: The alarm circuit comprises a first branch and a second branch, the first branch and the second branch are arranged in parallel, and the first contact (701) and the second contact (702) are arranged in the first branch; A third contact (703) and a fourth contact (704) are provided in the second branch, and a second switch (6) is connected between the third contact (703) and the fourth contact (704). When the cover is opened, the second switch (6) is closed, and the alarm device (3) sends an alarm signal to the staff.

6. The water meter disassembly alarm device according to claim 5, characterized in that: The second switch (6) comprises: a first conductive plate (601) connected to the third contact point (703), wherein the first conductive plate (601) is disposed in the installation cavity (101); a second conductive plate (602) connected to the fourth contact point (704), the second conductive plate (602) being arranged in the mounting cavity (101), and the first conductive plate (601) and the second conductive plate (602) being arranged at intervals; A third conductive plate (603) slidably disposed in the mounting cavity (101); a first spring (604) disposed between the third conductive plate (603) and the inner bottom surface of the installation box (1); when the first spring (604) is in a natural state, the third conductive plate connects the first conductive plate (601) and the second conductive plate (602); A first push rod (803) is arranged at the bottom of the cover body (8); when the cover body (8) is buckled onto the installation box (1), the first push rod (803) abuts against the third conductive plate; the length of the first push rod (803) is greater than the distance between the third conductive plate and the cover body (8) when the first spring (604) is in a natural state.

7. The water meter disassembly alarm device according to claim 6, characterized in that: Two through holes (104) are provided on the bottom surface of the installation box (1), and second push rods (605) are inserted into the through holes (104), and the conductive rod (504) can partially extend out of the installation box (1) due to sliding, one of the second push rods (605) is connected to the first conductive plate (601), and the other second push rod (605) is connected to the second conductive plate (602), and when the core fixing cover (2) of the water meter is fixed on the outer shell (9) of the water meter, the bottom of the second push rod (605) abuts against the outer shell (9), and the first conductive plate and the second conductive plate are both spaced apart from the third conductive plate.

8. The water meter disassembly alarm device according to claim 7, characterized in that: A second spring (606) is provided at the bottom of each of the first conductive plate and the second conductive plate, and the other end of each of the second springs (606) is connected to the inner bottom surface of the installation box (1). The cover body (8) is fixed to the installation box (1), and when the second spring (606) is in a natural state, the first conductive plate and the second conductive plate are connected to the third conductive plate, and the bottom of the second push rod (605) extends out of the installation box (1).

9. The water meter disassembly alarm device according to claim 8, characterized in that: The cover body (8) is provided with a plurality of first threaded holes (804), and the top end of the side wall of the installation box (1) is provided with a plurality of second threaded holes (103), the first threaded holes (804) and the second threaded holes (103) corresponding to each other one by one, and bolts are screwed into the corresponding first threaded holes (804) and second threaded holes (103), so that the cover body (8) is fixed on the installation box (1).

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