Anti-freezing structure of electronic water meter

Abstract

The utility model discloses an electronic water meter anti-freezing structure, which relates to the field of water meter anti-freezing, and comprises a water meter body and a protection component sleeved outside the water meter body, a sealing access cover is installed at the upper port of a shell I in an opening and closing manner, and a heating mechanism is arranged on the inner side of a shell II. The water meter body is completely wrapped in the closed space formed in the water meter body through the first shell and the second shell, and the heat insulation cavity of the heat preservation and insulation layer is arranged between the first shell and the second shell, so that external low temperature is effectively prevented from being conducted to the inside, and the decreasing rate of the temperature of the environment where the water meter body is located is remarkably decreased; when the temperature in the protection assembly is reduced to a second set threshold value due to long-term extremely cold, convex thorns can be triggered to generate mechanical displacement, so that the convex thorns sequentially pierce the sealing layers of the multiple self-heating patches according to the design sequence, and the self-heating patches are prevented from being damaged. The heating substance in the self-heating patch continuously releases heat after being in contact with air, and key active temperature rise is provided.

Description

Technical Field

[0001] This utility model relates to the field of water meter antifreeze, and in particular to an antifreeze structure for electronic water meters. Background Technology

[0002] As a critical metering device in the water supply system, the reliability and durability of water meters are of paramount importance. In cold regions or during winter, one of the greatest threats to water meters is that the water inside them freezes into ice due to low temperatures.

[0003] The physical properties of water dictate that it expands in volume during freezing. When the water inside a water meter freezes, the enormous expansion force has nowhere to be released and will directly act on the inner wall and key components of the water meter. This is the most common form of damage, especially to the weak points of plastic or metal casings. Once the casing breaks, it will not only render the water meter completely unusable and cause metering failure, but it will also cause water leakage, resulting in water waste, property damage to users, and even potential structural safety hazards to buildings. Utility Model Content

[0004] The purpose of this utility model is to provide an antifreeze structure for electronic water meters in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: it includes a water meter body and a protective component sleeved on the water meter body. The protective component includes a housing one and a housing two connected by threads, and both housing one and housing two have heat insulation cavities. A sealed maintenance cover is installed on the upper port of housing one, and a heating mechanism is provided on the inner side of housing two.

[0006] The heating mechanism includes a fixed base fixedly installed at the bottom of the inner cavity of the housing. A fixed replacement sleeve is coaxially fixedly connected to the top center of the fixed base. Multiple self-heating patches are circumferentially and equidistantly affixed to the outer surface of the fixed replacement sleeve. Protrusions for sequentially opening the self-heating patches are slidably provided on the outer surface of the fixed base.

[0007] As a further description of the above technical solution: a sliding seat is slidably connected to the outer surface of the fixed seat, and a top plate is fixedly connected to the top of the sliding seat in parallel and symmetrical manner. Two clamping pieces are provided between the sliding seat and the top plate. A water hose is clamped between the opposing surfaces of the two clamping pieces, and the opposing surfaces of the two clamping pieces are glued together on both sides away from the middle with glue.

[0008] As a further description of the above technical solution: a displacement slide is provided annularly at the top of the fixed seat away from its axis, and the displacement slide includes multiple flat-bottomed grooves and inclined-bottomed grooves connecting two adjacent flat-bottomed grooves.

[0009] As a further description of the above technical solution: a protrusion is fixedly connected to the foremost clamping piece, a guide ring block adapted to the displacement slide is slidably installed at the bottom end of the protrusion, and a protruding spike is fixedly connected to the end of the protrusion away from the clamping piece.

[0010] As a further description of the above technical solution: a plurality of back stops are fixedly connected between the sliding seat and the top plate, and the plurality of back stops are all located on the back of the last side clamp.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] The water meter body is completely enclosed in a sealed space by housing one and housing two, with a thermal insulation layer between housing one and housing two. This effectively blocks the conduction of external low temperature to the inside, significantly slowing down the rate of temperature drop in the environment where the water meter body is located. This reduces the risk of water freezing inside the water meter and the resulting cracking of the meter body. When the temperature inside the protection component drops to the second set threshold due to prolonged extreme cold, it will trigger the burrs to generate mechanical displacement, causing the burrs to pierce the sealing layer of multiple self-heating patches in the designed sequence. The heating material inside the self-heating patches undergoes an oxidation reaction after contacting the air and continuously releases heat, providing a crucial active temperature rise for the protection component. This greatly extends the effective anti-freeze time of the device without external energy input. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall front and side elevation structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the entire utility model;

[0015] Figure 3 This is a schematic diagram of the connection structure of the heating mechanism in this utility model;

[0016] Figure 4 This utility model Figure 3 Enlarged view of node A in the middle;

[0017] Figure 5 This is a schematic diagram of the connection structure between the sliding seat and the protrusion of this utility model.

[0018] Legend:

[0019] 1. Water meter body; 2. Protective components; 21. Housing 1; 22. Housing 2; 23. Sealed inspection cover; 24. Insulation cavity; 4. Heating mechanism; 41. Fixing seat; 42. Displacement slide; 43. Fixing replacement sleeve; 44. Self-heating patch; 45. Slide seat; 451. Top plate; 46. Clip; 461. Backstop; 47. Water hose; 48. Thrust; 481. Guide ring block; 49. Spike. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 - Figure 5 As shown, the present invention provides: a water meter body 1 and a protective component 2 sleeved on the outside of the water meter body 1. The protective component 2 includes a housing 1 21 and a housing 22 connected by threads. Both housing 1 21 and housing 22 have a heat insulation cavity 24. A sealed maintenance cover 23 is installed on the upper port of housing 1 21. A heating mechanism 4 is provided inside housing 22.

[0022] Heating mechanism 4 includes a fixed seat 41 fixedly installed at the bottom of the inner cavity of housing 22. A fixed replacement sleeve 43 is coaxially fixedly connected to the top center of the fixed seat 41. Multiple self-heating patches 44 are equidistantly affixed to the outer surface of the fixed replacement sleeve 43. The outer surface of the fixed seat 41 is slidably provided with protrusions 49 for sequentially opening the self-heating patches 44.

[0023] In actual use, the first housing 21 and the second housing 22 are installed on the outside of the water meter body 1 by screw thread. The water meter body 1 is completely wrapped in the sealed space formed by the first housing 21 and the second housing 22. A heat insulation layer and heat insulation cavity 24 are set between the first housing 21 and the second housing 22 to effectively block the conduction of external low temperature to the inside, significantly slow down the rate of temperature drop of the water meter body 1, thereby reducing the risk of water freezing inside the water meter and the resulting cracking of the meter body.

[0024] Furthermore, when the temperature inside the protection component 2 drops to the second set threshold due to prolonged extreme cold, it will trigger the thorns 49 to generate mechanical displacement, causing the thorns 49 to pierce the sealing layer of multiple self-heating patches 44 in sequence according to the design. The heat-generating material inside the self-heating patch 44 undergoes an oxidation reaction after contacting the air and continuously releases heat, providing a crucial active temperature rise inside the protection component 2, which greatly extends the effective antifreeze time of the device without external energy input.

[0025] Specifically, a sliding base 45 is slidably connected to the outer surface of the fixed base 41, and a top plate 451 is fixedly connected to the top of the sliding base 45 in parallel and symmetrical manner. Two clamping pieces 46 are provided between the sliding base 45 and the top plate 451. A water belt 47 is clamped between the opposite surfaces of the two clamping pieces 46. The opposite surfaces of the two clamping pieces 46 are glued together on both sides away from the middle with glue.

[0026] The top of the fixed base 41 is provided with a displacement slide 42 in an annular shape away from its axis. The displacement slide 42 includes multiple flat bottom grooves and an inclined bottom groove that connects two adjacent flat bottom grooves.

[0027] A boss 48 is fixedly connected to the foremost clamping piece 46. A guide ring block 481 adapted to the displacement slide 42 is slidably installed at the bottom of the boss 48. A protruding spike 49 is fixedly connected to the end of the boss 48 away from the clamping piece 46.

[0028] When the internal temperature of the protection component 2 is sufficient to cause the medium inside the water hose 47 to expand due to cooling, the expansion of the water hose 47 pushes the protrusion 48 to move. The guide ring block 481 at the bottom of the protrusion 48 is guided by the flat bottom groove of the displacement slide 42, causing the protrusion 49 to pierce the self-heating patch 44 attached to the outside of the fixed replacement sleeve 43. When the self-heating patch 44 is pierced, its internal material heats up after contacting oxygen, causing the internal temperature of the protection component 2 to rise.

[0029] As the temperature inside the protective component 2 slowly rises, the medium inside the water hose 47 melts into a liquid state, thus relieving the expansion effect of the water hose 47. As a result, the convex seat 48 loses its supporting effect, and the guide ring block 481 moves back along the flat bottom groove of the displacement slide 42. When the guide ring block 481 approaches the inclined bottom groove, it will automatically slide down to the slope of the inclined bottom groove of the displacement slide 42 due to the slope of the inclined bottom groove. During the continuous retraction of the convex seat 48, it moves from the bottom of the inclined bottom groove of the displacement slide 42 to the top of the slope. After the convex seat 48 retracts to the starting position, the guide ring block 481 connects with the convex seat 48 and enters another flat bottom groove from the inclined bottom groove of the displacement slide 42. Then, whenever one of the self-heating patches 44 loses heat, when the internal temperature of the protective component 2 drops back to the second set threshold, the water hose 47 expands again to puncture the other self-heating patch 44 and make it heat up.

[0030] Furthermore, multiple backstops 461 are fixedly connected between the sliding seat 45 and the top plate 451, and the multiple backstops 461 are all located on the back of the last side clip 46.

[0031] With the sliding seat 45, top plate 451 and multiple rear stops 461 limiting the movement on three sides, when the cooling expansion medium inside the water hose 47 expands, it can only push the foremost clamp 46 to move the protrusion 49 at the front of the protrusion 48 closer to the fixed replacement sleeve 43, and puncture the self-heating patch 44 attached to the outside of the fixed replacement sleeve 43.

[0032] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An anti-freezing structure of an electronic water meter, comprising a water meter body (1) and a protection assembly (2) sleeved outside the water meter body (1), characterized in that: The protective component (2) includes a housing one (21) and a housing two (22) connected by threads, and both housing one (21) and housing two (22) are provided with a heat insulation cavity (24). A sealed maintenance cover (23) is installed on the upper port of housing one (21), and a heating mechanism (4) is provided on the inner side of housing two (22). The heating mechanism (4) includes a fixed seat (41) fixedly installed at the bottom of the inner cavity of the housing (22). A fixed replacement sleeve (43) is coaxially fixedly connected to the top center of the fixed seat (41). Multiple self-heating patches (44) are circumferentially and equidistantly attached to the outer surface of the fixed replacement sleeve (43). The outer surface of the fixed seat (41) is slidably provided with protrusions (49) for sequentially opening the self-heating patches (44).

2. The anti-freezing structure of an electronic water meter according to claim 1, wherein The outer surface of the fixed seat (41) is slidably connected to a sliding seat (45), and the top of the sliding seat (45) is symmetrically and fixedly connected to a top plate (451). Two clips (46) are provided between the sliding seat (45) and the top plate (451). Water belts (47) are clamped between the opposite surfaces of the two clips (46). The opposite surfaces of the two clips (46) are glued together on both sides away from the middle.

3. The anti-freezing structure of an electronic water meter according to claim 2, wherein The top of the fixed seat (41) is provided with a displacement slide (42) in an annular shape away from its axis. The displacement slide (42) includes multiple flat bottom grooves and a sloping bottom groove that connects two adjacent flat bottom grooves.

4. The anti-freezing structure of an electronic water meter according to claim 3, wherein A boss (48) is fixedly connected to the foremost clamp (46). A guide ring block (481) adapted to the displacement slide (42) is slidably installed at the bottom of the boss (48). A protrusion (49) is fixedly connected to the end of the boss (48) away from the clamp (46).

5. The anti-freezing structure of an electronic water meter according to claim 4, wherein A plurality of backstops (461) are fixedly connected between the sliding seat (45) and the top plate (451), and the plurality of backstops (461) are located on the back of the last side clamp (46).

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