CN220490152U - Antifreezing water meter - Google Patents

Abstract

The application provides an anti-freezing water meter, which comprises a water meter body and a heating device, wherein the water meter body is provided with a dial, and the heating device is arranged on the water meter body in a staggered manner with the dial; the heating device comprises a heating device shell and an electric heating wire, the heating device shell is connected with the water meter body, a containing cavity is formed in the heating device shell, the electric heating wire is located in the containing cavity, and the electric heating wire is used for heating the water meter body after being electrified. The anti-freezing water meter that this application provided sets up heating device through the water gauge and makes anti-freezing water meter have better anti-freezing effect to can avoid the dial plate to be sheltered from.

Description

Antifreezing water meter

Technical Field

The application relates to the technical field of water meters, in particular to an antifreezing water meter.

Background

The water meter is arranged in the water supply pipeline to detect water flow in the water supply pipeline.

The water meter comprises a water meter body, a dial plate and an interface. The water meter body is connected with a water supply pipeline through an interface, and the dial plate is arranged on the water meter body to display water flow. The water meter body is internally provided with various detection devices, and in a use environment with low temperature, water in the water meter can be frozen, so that the various detection devices and the dial are frozen and cracked. In the related art, the water meter can be insulated by wrapping the heat insulation material on the water meter, or the protective shell is arranged on the water meter, and the heat insulation material is filled between the water meter and the protective shell to insulate the water meter.

But the antifreezing effect of the heat insulation material is poor, and the dial is shielded by the heat insulation material or the protective shell.

Disclosure of Invention

The application provides an anti-freezing water meter, through set up heating device on the water gauge make anti-freezing water meter have better anti-freezing effect to can avoid the dial plate to be sheltered from.

The application provides an anti-freezing water meter, which comprises a water meter body and a heating device, wherein the water meter body is provided with a dial plate;

the heating device comprises a heating device shell and an electric heating wire, the heating device shell is connected with the water meter body, a containing cavity is formed in the heating device shell, the electric heating wire is located in the containing cavity, and the electric heating wire is used for heating the water meter body after being electrified.

In one possible implementation manner, the anti-freezing water meter provided by the application is provided, the heating device is arranged at one end of the water meter body, which is away from the dial plate, the heating device shell comprises a shell body and a cover body, the shell body is connected with the water meter body, and the cover body is covered on the shell body and is connected with the shell body so as to form a containing cavity together with the shell body;

the casing body includes the diapire towards the lid, and the heating wire sets up on the diapire of casing body.

In one possible implementation mode, the anti-freezing water meter provided by the application is characterized in that the shell body and the water meter body are of an integrated structure;

or the shell body and the water meter body are welded and fixed.

In one possible embodiment, the antifreeze water meter provided by the application, the heating wire disc is arranged in a spiral shape, the bottom wall of the shell body is provided with a first groove matched with the shape of the heating wire, and at least part of the heating wire facing the bottom wall is abutted with the inner part of the first groove.

In one possible embodiment, the anti-freezing water meter provided by the application, the heating device further comprises a heat conducting plate, the heat conducting plate is connected with the bottom wall of the shell body, and the heating wire is located between the heat conducting plate and the bottom wall.

In one possible implementation manner, the antifreeze water meter provided by the application has the structure that one side of the heat conducting plate, which faces the bottom wall, is provided with a second groove which is opposite to the first groove;

at least part of the electric heating wires facing the heat conducting plate are abutted with the inner wall of the second groove.

In one possible embodiment, the antifreeze water meter provided by the application, the heat conducting plate is welded with the bottom wall of the shell body;

the surface of the heating wire facing the bottom wall is adapted to and in close contact with the contour of the inner wall of the first groove, and the surface of the heating wire facing the heat conducting plate is adapted to and in close contact with the contour of the inner wall of the second groove.

In one possible embodiment, the antifreeze water meter provided by the application, the side wall of the housing body is provided with an opening penetrating through the side wall;

the heating device further comprises a power supply interface, the power supply interface is arranged in the opening and is used for being electrically connected with an external power supply, and the heating wire is electrically connected with the power supply interface.

In one possible implementation manner, the anti-freezing water meter provided by the application further comprises a temperature controller, wherein the temperature controller is electrically connected between the heating wire and the power supply interface;

the temperature controller is used for enabling the power supply interface to be electrically connected with the heating wire when the temperature is lower than a first set value, and enabling the power supply interface to be electrically disconnected with the heating wire when the temperature is higher than a second set value.

In one possible implementation mode, the anti-freezing water meter provided by the application comprises a detector and a controller, wherein the power supply interface and the controller are electrically connected with the detector;

the detector is used for sending a first instruction to the controller when detecting that the temperature is lower than a first set value, and the controller is used for controlling the power supply interface to be electrically connected with the heating wire according to the first instruction;

the detector is used for sending a second instruction to the controller when detecting that the temperature is higher than a second set value, and the controller is used for controlling the power supply interface to be disconnected with the electric heating wire according to the second instruction.

The application provides an anti-freezing water meter, through setting up water gauge body and heating device, be provided with the dial plate on the water gauge body, heating device staggers with the dial plate on the water gauge body and sets up, from this, can prevent that heating device from sheltering from the dial plate, heating device includes heating device casing and heating wire, heating device casing and water gauge body coupling, the heating device casing has the chamber of holding in, the heating wire is located the chamber of holding, the heat that the heating wire produced can be through heating device casing transfer to the water gauge body with water gauge body heating, heating device in the anti-freezing water gauge that this application embodiment provided can produce extra heat after the circular telegram and come water gauge body heating, even also have better heat preservation effect when ambient temperature is too low.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an anti-freezing water meter according to an embodiment of the present application;

fig. 2 is a schematic diagram of an internal structure of a heating device in an anti-freezing water meter according to an embodiment of the present application;

fig. 3 is an explosion schematic diagram of an anti-freezing water meter according to an embodiment of the present application;

fig. 4 is a second schematic explosion diagram of the anti-freezing water meter according to the embodiment of the present application;

fig. 5 is a schematic diagram of the internal structure of a heating device in the anti-freezing water meter according to the embodiment of the present application;

fig. 6 is an explosion schematic diagram III of an anti-freezing water meter according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a heat conducting plate in the anti-freezing water meter according to the embodiment of the present application;

fig. 8 is a schematic diagram of an internal structure of a thermostat in an anti-freezing water meter according to an embodiment of the present application.

Reference numerals illustrate:

100-a water meter body;

110-dial plate;

120-water inlet;

130-a water outlet;

200-heating device;

210-a heating device housing; 211-accommodation chamber; 212-a housing body; 2121-a bottom wall; 2121 a-first groove; 2122-sidewalls; 2122 a-studs; 213-cover; 2131-threaded holes;

220-heating wire;

230-a fastener;

240-a heat-conducting plate;

241-a second groove;

250-power interface;

260-temperature controller;

261-detector;

262-a controller;

263-switch;

x-a first direction;

y-second direction.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or indirectly connected through intermediaries, for example, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are therefore not to be construed as limiting the present application.

The terms "first," "second," "third" (if any) in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of operation in sequences other than those illustrated or described herein, for example.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or maintenance tool that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or maintenance tool.

The water meter is arranged in the water supply pipeline to detect water flow in the water supply pipeline.

The water meter comprises a water meter body, a dial plate and an interface. The water meter body is connected with a water supply pipeline through an interface, and the dial is arranged on the water meter body and displays water flow. The water meter body is provided with various detection devices, and in a low-temperature use environment, for example, water in the water meter can be frozen in winter, so that the various detection devices and the dial are frozen and cracked.

In the first related art, the water meter can be wrapped with a heat insulation material to insulate the water meter. The heat-insulating material can be hemp ropes, cloth strips or heat-insulating cotton, and the hemp ropes, the cloth strips or the heat-insulating cotton are wound on the water meter in one or more layers, so that the contact between cold air and the water meter is reduced to insulate the water meter.

In the second related art, a protective shell is sleeved on the water meter, and then a heat preservation material is filled between the water meter and the protective shell to preserve heat of the water meter.

The heat-insulating materials such as hemp ropes, cloth strips or heat-insulating cotton can only reduce the contact between cold air and the water meter, so that the heat-insulating effect is limited, and when the environmental temperature is too low, the heat-insulating materials are difficult to play a heat-insulating role, so that the anti-freezing effect is poor.

The heat preservation material or the protective housing can shelter from the dial plate for the operating personnel is difficult to observe the discharge through the dial plate. Therefore, the heat insulating material or the protective case is provided on the water meter in a season of low temperature such as winter, but the heat insulating material or the protective case is also required to be removed from the water meter in a season of high temperature, thereby increasing the workload of operators.

Based on this, this application provides an anti-freezing water gauge, sets up heating device through the water gauge and makes anti-freezing water gauge have better anti-freezing effect to can avoid the dial plate to be sheltered from.

Fig. 1 is a schematic structural diagram of an anti-freezing water meter according to an embodiment of the present application; fig. 2 is a schematic diagram of an internal structure of a heating device in an anti-freezing water meter according to an embodiment of the present application; fig. 3 is an explosion schematic diagram of an anti-freezing water meter according to an embodiment of the present application.

Referring to fig. 1 to 3, the anti-freezing water meter provided by the application comprises a water meter body 100 and a heating device 200, wherein a dial plate 110 is arranged on the water meter body 100, and the heating device 200 is arranged on the water meter body 100 and staggered with the dial plate 110; the heating device 200 includes a heating device housing 210 and an electric heating wire 220, the heating device housing 210 is connected with the water meter body 100, a containing cavity 211 is provided in the heating device housing 210, the electric heating wire 220 is located in the containing cavity 211, and the electric heating wire 220 is used for heating the water meter body 100 after being electrified.

First, the structure of the water meter main body 100 will be described.

The water meter body 100 is provided with a water inlet 120 and a water outlet 130 at opposite sides in the water flow direction. The water flow direction is referred to as a first direction X, in this embodiment, a direction perpendicular to the first direction X is referred to as a second direction Y, and in other embodiments, for example, when the water meter body 100 is installed at a bend of a water pipe, an included angle between the second direction Y and the first direction X may be greater than or less than 90 °.

The dial 110 is arranged at one end of the water meter body 100 along the second direction Y, a flow monitoring device is further arranged in the water meter body 100 and is connected with a display device in the dial 110, water flows into the water meter body 100 from the water inlet 120, flows out from the water outlet 130 after flowing through the water meter body 100, and the flow monitoring device in the water meter body 100 monitors water flow and displays the water flow on the display device in the dial 110.

When the ambient temperature is too low, such as during winter, water within the meter body 100 freezes, causing the components in the meter body 100 to freeze. The embodiment of the application prevents each component in the water meter body 100 from being frozen by providing the heating device 200.

Next, the specific position and structure of the heating device 200 will be described.

In the embodiment shown in fig. 1 and 2, the heating device 200 is disposed on the water meter body 100 so as to avoid the dial 110, whereby the heating device 200 does not shade the dial 110. The heating device 200 is used for heating the water meter body 100. Further, since the heating device 200 does not block the dial 110, when the water meter is not required to be heated, the heating device 200 does not need to be detached from the water meter main body 100, and the workload of an operator can be reduced. It should be noted that, the heating device 200 also needs to avoid the water inlet 120 and the water outlet 130.

With continued reference to fig. 2 and 3, the heating device 200 includes a heating device housing 210 and a heating wire 220. The heating device housing 210 is connected with the water meter body 100, the heating device housing 210 is a sealed housing, the heating device housing 210 is internally provided with a containing cavity 211, the heating wire 220 is arranged in the containing cavity 211, and the heating wire 220 can generate heat after being electrified. When the water meter body 100 needs to be heated, the heating wire 220 is energized, the heating wire 220 generates heat, and the heating device housing 210 can be provided as a sealed housing, so that the heat generated by the heating wire 220 can be sealed in the accommodating cavity 211 of the heating device housing 210 and transferred to the water meter body 100 through the heating device housing 210 to heat the water meter body 100. Compared with the prior art, the heating device 200 in the anti-freezing water meter provided by the embodiment of the application can generate additional heat to heat the water meter body 100 after being electrified by avoiding the contact of cold air and the water meter through the heat preservation material so as to realize a better anti-freezing effect on the water meter body 100, and can defrost the frozen water meter body 100, so that the anti-freezing device has a better anti-freezing effect even when the environmental temperature is too low.

According to the anti-freezing water meter, the water meter body 100 and the heating device 200 are arranged, the dial 110 is arranged on the water meter body 100, and the heating device 200 is arranged on the water meter body 100 in a staggered mode with the dial 110, so that the heating device 200 can be prevented from shielding the dial 110; the heating device 200 includes a heating device housing 210 and an electric heating wire 220, the heating device housing 210 is connected with the water meter body 100, the heating device housing 210 is internally provided with a containing cavity 211, the electric heating wire 220 is located in the containing cavity 211, heat generated by the electric heating wire 220 can be sealed in the containing cavity 211 of the heating device housing 210 and transferred to the water meter body 100 through the heating device housing 210 to heat the water meter body 100, and the heating device 200 in the anti-freezing water meter provided by the embodiment of the application can generate additional heat to heat the water meter body 100 after being electrified, so that the anti-freezing water meter has a better heat preservation effect even when the environmental temperature is too low.

In the embodiment shown in fig. 2 and 3, the heating device 200 is disposed at an end of the water meter body 100 facing away from the dial 110, the heating device housing 210 includes a housing body 212 and a cover 213, the housing body 212 is connected to the water meter body 100, and the cover 213 is disposed on the housing body 212 and connected to the housing body 212 to form a receiving chamber 211 together with the housing body 212; the housing body 212 includes a bottom wall 2121 facing the cover 213, and the heating wire 220 is disposed on the bottom wall 2121 of the housing body 212.

The housing body 212 includes a bottom wall 2121 and a side wall 2122 provided around the periphery of the bottom wall 2121, and the bottom wall 2121 is connected to the water meter body 100.

The heating wire 220 is disposed on the bottom wall 2121 so that heat generated from the heating wire 220 can be directly transferred to the water meter body 100 through the bottom wall 2121.

The cover 213 may be connected to the side wall 2122 of the housing body 212 by a fastener 230, specifically, the side wall 2122 has a stud 2122a thereon, the cover 213 has a threaded hole 2131 disposed opposite to the stud 2122a thereon, and the fastener 230 is inserted into the threaded hole 2131 and the stud 2122a to be screwed with the threaded hole 2131 and the stud 2122a, thereby connecting the cover 213 to the housing body 212.

Dividing the heating device case 210 into the case body 212 and the cover 213 can facilitate the installation of the heating wire 220 inside the heating device case 210.

In the first embodiment, the housing body 212 and the water meter body 100 are integrally formed, and specifically, the housing body 212 and the water meter body 100 may be integrally formed.

The housing body 212 may be integrally molded with the water meter body 100 by casting to simplify the manufacturing process of the anti-freeze water meter.

In the second embodiment, the housing body 212 is welded and fixed to the water meter body 100.

The bottom wall 2121 of the housing body 212 may also be welded to the water meter body 100 for connection with the water meter body 100, whereby different contoured heating device housings 210 may be provided depending on the configuration of the water meter body 100.

Fig. 4 is a second schematic explosion diagram of the anti-freezing water meter according to the embodiment of the present application.

Referring to fig. 2 to 4, the heating wire 220 is coiled in a spiral shape, the bottom wall 2121 of the housing body 212 has a first groove 2121a matching the shape of the heating wire 220, and a portion of the heating wire 220 facing the bottom wall 2121 abuts against an inner wall of the first groove 2121 a.

The coil of the heating wire 220 may increase the length of the heating wire 220, and thus, the heating value of the heating wire 220 may be increased.

The first groove 2121a corresponding to the spiral shape of the heating wire 220 is provided on the bottom wall 2121, the heating wire 220 is provided in the first groove 2121a and abuts against the inner wall of the first groove 2121a, that is, the heating wire 220 is in interference fit with the side wall of the first groove 2121a, and therefore, the first groove 2121a can increase the contact area of the heating wire 220 and the bottom wall 2121 while fixing the heating wire 220, thereby improving the heat transmission efficiency generated by the heating wire 220.

Fig. 5 is a schematic diagram of the internal structure of a heating device in the anti-freezing water meter according to the embodiment of the present application; fig. 6 is an explosion schematic diagram of an anti-freezing water meter according to an embodiment of the present application.

Referring to fig. 5 and 6, the heating apparatus 200 further includes a heat conductive plate 240, the heat conductive plate 240 is connected to the bottom wall 2121 of the housing body 212, and the heating wire 220 is located between the heat conductive plate 240 and the bottom wall 2121.

The heat conductive plate 240 is covered on the heating wire 220, and the edge of the heat conductive plate 240 may be connected to the bottom wall 2121 of the housing body 212, that is, the bottom wall 2121, the heating wire 220 and the heat conductive plate 240 form a sandwich structure. Accordingly, the heat conduction plate 240 can transfer heat generated at a surface of the heating wire 220 facing away from the bottom wall 2121 to the water meter body 100 through the bottom wall 2121, and thus, the heat transfer efficiency of the heating wire 220 can be further improved.

Fig. 7 is a schematic structural diagram of a heat conducting plate in an anti-freezing water meter according to an embodiment of the present application.

Referring to fig. 7, the side of the heat conductive plate 240 facing the bottom wall 2121 has a second groove 241 disposed opposite to the first groove 2121 a; at least a portion of the heating wire 220 facing the heat conductive plate 240 abuts against the inner wall of the second groove 241.

The heating wire 220 is interference-fitted with the sidewall of the second groove 241, and thus, the contact area of the heating wire 220 and the heat conductive plate 240 may be increased, thereby improving the transmission efficiency of heat generated by the heating wire 220.

The first groove 2121a and the second groove 241 wrap the heating wire 220 completely, so that part of heat generated by the heating wire 220 is transferred to the water meter body 100 through the bottom wall 2121, part of heat generated by the heating wire 220 is sequentially transferred to the water meter body 100 through the heat conducting plate 240 and the bottom wall 2121, and little part of heat flows to other positions in the accommodating cavity 211, and the heat in the accommodating cavity 211 is sealed in the accommodating cavity 211 by the cover 213, and the heating device 200 has a heat preservation effect, so that the heat utilization rate of the heating device 200 provided by the embodiment of the application is higher.

In the present embodiment, the heat conductive plate 240 is welded to the bottom wall 2121 of the housing body 212, that is, the edge position of the heat conductive plate 240 may be connected to the bottom wall 2121 of the housing body 212 by welding, whereby the heat transferred to the housing body 212 through the heat conductive plate 240 may be further increased.

The surface of the heating wire 220 facing the bottom wall 2121 is fitted with the contour of the inner wall of the first groove 2121a and is in close contact with the inner wall of the first groove 2121a, and the surface of the heating wire 220 facing the heat conductive plate 240 is fitted with the contour of the inner wall of the second groove 241 and is in close contact with the inner wall of the second groove 241. So configured, the contact area of the heating wire 220 with the inner walls of the first and second grooves 2121a and 241 may be increased to further increase the amount of heat transferred to the case body 212 through the heat conductive plate 240 and the bottom wall 2121.

Next, a power supply method of the heating wire 220 will be described in detail.

The side wall 2122 of the housing body 212 is provided with an opening (not labeled in the figure) penetrating the side wall 2122; the heating device 200 further includes a power supply interface 250, the power supply interface 250 is disposed in the opening, the power supply interface 250 is electrically connected to an external power source, and the heating wire 220 is electrically connected to the power supply interface 250.

The provision of the opening in the side wall 2122 of the housing body 212 makes efficient use of the space in the side wall 2122 and facilitates electrical connection of the power interface 250 to an external power source located in the opening.

The heating wire 220 is electrically connected with the power supply interface 250, and when the water meter body 100 needs to be heated, the heating wire 220 can be electrified by electrically connecting the power supply interface 250 with an external power supply, so that the heating wire 220 generates heat.

With continued reference to fig. 5, the heating apparatus 200 further includes a temperature controller 260, and the temperature controller 260 is electrically connected between the heating wire 220 and the power supply interface 250;

the temperature controller 260 is used for electrically connecting the power supply interface 250 with the heating wire 220 when the temperature is lower than a first set value, and disconnecting the power supply interface 250 from the heating wire 220 when the temperature is higher than a second set value.

One end of the temperature controller 260 is electrically connected with the heating wire 220, and the other end of the temperature controller 260 is electrically connected with the power supply interface 250.

The first set point may be set to the freezing temperature of water, for example, to 0 degrees. When the temperature is lower than the first set value, the temperature controller 260 controls the power supply interface 250 to be electrically connected with the heating wire 220. The second set point may be set to 25-30 degrees, and the controller controls the power supply interface 250 to be electrically disconnected from the heating wire 220 when the temperature is higher than the second set point.

The power supply interface 250 can be electrically connected with an external power supply all the time through a cable, and the power on and off of the heating wire 220 is controlled through the temperature controller 260, so that an operator can be prevented from repeatedly plugging and unplugging the cable on the power supply interface 250, and the workload of the operator is reduced.

In addition, it is also possible to prevent the electric heating wire 220 from always heating the water meter body 100 when the temperature is high, so that the devices in the water meter body 100 are damaged due to the high temperature.

Next, a specific manner in which the temperature controller 260 controls the power supply interface 250 to be electrically connected to or disconnected from the heating wire 220 will be described.

Fig. 8 is a schematic diagram of an internal structure of a thermostat in an anti-freezing water meter according to an embodiment of the present application. Wherein the interface 250 and the heating wire 220 are schematically shown in broken lines in fig. 8,

referring to fig. 8, the temperature controller 260 includes a detector 261 and a controller 262, and the power supply interface 250 and the controller 262 are electrically connected to the detector 261; the detector 261 is configured to send a first instruction to the controller 262 when detecting that the temperature is lower than a first set value, and the controller 262 is configured to control the power supply interface 250 to be electrically connected to the heating wire 220 according to the first instruction; the detector 261 is configured to send a second instruction to the controller 262 when detecting that the temperature is higher than the second set value, and the controller 262 is configured to control the power supply interface 250 to be electrically disconnected from the heating wire 220 according to the second instruction.

Specifically, the temperature controller 260 further includes a switch 263, the switch 263 is disposed on a circuit connecting the power supply interface 250 and the heating wire 220, and an initial state of the switch 263 is an off state. When the detector 261 detects that the temperature is lower than the first set value (0 degrees), a first instruction is issued to the controller 262, and the controller 262 causes the switch 263 to be closed according to the first instruction, thereby electrically connecting the power supply interface 250 with the heating wire 220, thereby supplying power to the heating wire 220 so that the heating wire 220 generates heat.

When the detector 261 detects a second set value (25-30 degrees) of the temperature height, a second instruction is issued to the controller 262, and the controller 262 turns off the switch 263 according to the second instruction, thereby electrically disconnecting the power supply interface 250 from the heating wire 220, and thus stopping the power supply to the heating wire 220.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (8)

1. An antifreezing water meter is characterized by comprising a water meter body and a heating device, wherein the water meter body is provided with a dial, and the heating device is arranged on the water meter body and avoids the dial;

the heating device comprises a heating device shell and an electric heating wire, the heating device shell is connected with the water meter body, a containing cavity is formed in the heating device shell, the electric heating wire is positioned in the containing cavity, and the electric heating wire is used for heating the water meter body after being electrified;

the dial plate is arranged at one end of the water meter body, the heating device is arranged at one end of the water meter body, which is away from the dial plate, the heating device shell comprises a shell body and a cover body, the shell body is connected with the water meter body, and the cover body is covered on the shell body and connected with the shell body so as to form the accommodating cavity together with the shell body;

the shell body comprises a bottom wall facing the cover body, and the electric heating wire is arranged on the bottom wall of the shell body;

the heating device further comprises a heat conducting plate, the heat conducting plate is connected with the bottom wall of the shell body, and the electric heating wire is located between the heat conducting plate and the bottom wall.

2. The anti-freeze water meter of claim 1, wherein the housing body is of unitary construction with the water meter body;

or the shell body and the water meter body are welded and fixed.

3. The antifreeze water meter of claim 1 or 2, wherein said heating wire disk is provided in a spiral shape, and a bottom wall of said housing body has a first groove matching a shape of said heating wire, and at least a part of said heating wire facing said bottom wall abuts an inner wall of said first groove.

4. The anti-freeze water meter of claim 3 wherein a side of the thermally conductive plate facing the bottom wall has a second recess disposed opposite the first recess;

at least part of the electric heating wire facing the heat conducting plate is abutted against the inner wall of the second groove.

5. The anti-freeze water meter of claim 4 wherein the thermally conductive plate is welded to the bottom wall of the housing body;

the surface of the heating wire facing the bottom wall is adapted to and in close contact with the contour of the inner wall of the first groove, and the surface of the heating wire facing the heat conductive plate is adapted to and in close contact with the contour of the inner wall of the second groove.

6. The antifreeze water meter of claim 1 or 2, wherein a side wall of the housing body is provided with an opening therethrough;

the heating device further comprises a power supply interface, the power supply interface is arranged in the opening and is used for being electrically connected with an external power supply, and the heating wire is electrically connected with the power supply interface.

7. The anti-freeze water meter of claim 6, wherein the heating device further comprises a temperature controller electrically connected between the heating wire and the power supply interface;

the temperature controller is used for enabling the power supply interface to be electrically connected with the heating wire when the temperature is lower than a first set value, and enabling the power supply interface to be electrically disconnected with the heating wire when the temperature is higher than a second set value.

8. The anti-freeze water meter of claim 7, wherein the temperature controller comprises a detector and a controller, the power interface and the controller each being electrically connected to the detector;

the detector is used for sending a first instruction to the controller when detecting that the temperature is lower than a first set value, and the controller is used for controlling the power supply interface to be electrically connected with the heating wire according to the first instruction;

the detector is used for sending a second instruction to the controller when detecting that the temperature is higher than a second set value, and the controller is used for controlling the power supply interface to be disconnected with the heating wire according to the second instruction.