Bubble type anti-freezing water meter

Abstract

The invention discloses a bubble type anti-freezing water meter which comprises a water meter shell, a water meter metering device and a bubble storage device. The water meter metering device comprises an impeller component, an impeller box and an adjusting plate, the impeller box is erected in the water meter shell and is covered by the adjusting plate, and the impeller component is rotationally arranged in the impeller box; the bubble storage device comprises an impeller cylinder, a pressure-bearing disc and a disc, the pressure-bearing disc is covered with the water meter shell, the disc is pressed between the pressure-bearing disc and the adjusting plate, a bubble cavity is formed between the pressure-bearing disc and the disc, one end of the impeller cylinder is connected with the impeller component, the other end of the impeller cylinder penetrates through the adjusting plate and the disc and extends into the bubble cavity, and a pressure relief hole is formed between the impeller cylinder and the disc. The bubble cavity where the bubbles are located is communicated with the water meter metering channel through the pressure relief hole, and under the normal working condition, water flow is difficult to flow into the cavity where the bubbles are located; at the low temperature, in the freezing process of water, part of water flow can be pushed to be pressed into the bubble cavity, the pressure on the whole water meter caused by the expansion volume is reduced, and therefore the water meter cannot be frozen to crack.

Description

Technical Field

[0001] The invention relates to a bubble type antifreeze water meter, belonging to the technical field of water meters. Background Art

[0002] Water meters are used to measure the monthly water consumption of household users. They are relatively important measuring instruments and are usually installed indoors, in corridors, in public corridor wells, and in outdoor environments, such as underground water meter wells, above-ground water meter rooms, and on the walls of buildings. For dry-type water meters, such as Figure 1 The main components include water meter housing, metering mechanism, counter, etc. Water meters with remote transmission function usually also include communication modules, which are assembled with the water meter as a whole to form an intelligent remote transmission water meter. The metering mechanism of dry water meters usually includes three major components: pressure plate, impeller, and impeller box. The pressure plate plays a very critical role in bearing pressure. However, when water freezes and expands or the pressure is too high, the water meter housing and the pressure plate made of engineering plastics may still rupture and cause water leakage (pressure plate such as Figure 2 shown).

[0003] In order to solve the problem that water meters are prone to freezing and cracking below 0°C, structural components similar to spring mechanisms are usually installed inside the water meter, such as Figure 3 For details, please refer to the description in patent number CN117949058A. The volume increased by the expansion after the water freezes is eliminated by squeezing and deforming the pressure plate and the elastic member. The elastic member is a rubber bag with a cavity. This structure can play an anti-freezing effect in the early stage after the water meter starts to serve, but over time, with the aging of the rubber material and the chemical reaction of the water quality, the squeezing effect of the elastic member will deteriorate. At the same time, the water in the water meter cavity will gradually flow in over time, and the anti-freezing function will be lost. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing water meter has poor antifreeze performance or is prone to antifreeze failure after long-term use.

[0005] In order to solve the above technical problems, the present invention provides a bubble-type antifreeze water meter, which has strong antifreeze ability and the antifreeze ability will not decrease or disappear with the use time.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A bubble-type antifreeze water meter comprises a water meter housing, in which a water meter metering device and a bubble storage device are arranged; the water meter metering device comprises an impeller component, an impeller box and an adjusting plate, the impeller box is mounted in the water meter housing and covered by the adjusting plate, and the impeller component is rotated in the impeller box; the bubble storage device comprises an impeller cylinder, a pressure plate and a disc, the pressure plate cover is arranged in the water meter housing, the disc is pressed between the pressure plate and the adjusting plate, a bubble cavity is formed between the pressure plate and the disc, one end of the impeller cylinder is fixedly connected to the impeller component, the other end of the impeller cylinder is penetrated by the adjusting plate and the disc, extends into the bubble cavity and a pressure relief gap is formed between the disc.

[0008] Preferably, the disc is made of a deformable material, and when the disc is under pressure, the pressure relief gap increases or decreases as the pressure changes.

[0009] Preferably, a receiving groove for mounting the disc is provided on the pressure plate, and an annular unloading groove is provided on the bottom wall of the receiving groove on one side of the outer wall of the disc, and the inner wall of the annular unloading groove on the side with a larger diameter is flush with the inner wall of the receiving groove.

[0010] Preferably, a sealing ring is provided between the pressure plate and the water meter housing.

[0011] The bubble-type antifreeze water meter provided by the present invention has the following advantages:

[0012] The bubble-type antifreeze water meter of the present invention constructs a bubble cavity for storing bubbles in the water meter, and the bubble cavity stores bubbles when the water meter is not working; when the water meter is working normally, due to the combined effect of the characteristics of the disc being extrudable and deformable, the adjustment of the pressure relief pores between the disc and the impeller cylinder, and the viscosity of the water flow, it is difficult for the water flow inside the meter body to flow into the bubble cavity, thereby ensuring that the water meter will not freeze and crack when encountering low temperature or extremely cold weather; when the expansion force of water after freezing squeezes the disc, the disc will deform and bulge upward, increase the pores, and allow the water flow to flow into the bubble cavity; when the ice melts, the expansion force of the ice disappears, the disc returns to its original state, the pores are reduced, and the water in the water meter body will not flow into the bubble cavity. The disc truly plays the role of a spring in this scheme, achieving the purpose of antifreeze of the water meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an existing dry water meter;

[0014] Figure 2 It is a schematic diagram of the existing pressure cover structure;

[0015] Figure 3 It is a schematic diagram of the structure of an antifreeze water meter in the prior art;

[0016] Figure 4It is a structural schematic diagram of a bubble-type antifreeze water meter of the present invention;

[0017] In the figure:

[0018] 1- water meter housing; 2- water meter measuring device; 21- impeller component; 22- impeller box; 23- adjusting plate; 3- bubble storage device; 31- impeller cylinder; 32- pressure plate; 321- containing groove; 322- annular unloading groove; 33- disc; 331- pressure relief pore; 4- bubble cavity. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Figure 4 A bubble-type antifreeze water meter includes a water meter housing 1, in which a water meter metering device 2 and a bubble storage device 3 are coaxially installed. The water meter metering device 2 is used to realize the water consumption metering function of the water meter, and the bubble storage device 3 can store bubbles in the water meter for eliminating the squeezing force caused by the expansion of water freezing.

[0021] The water metering device 2 includes an impeller component 21, an impeller box 22 and an adjusting plate 23. The impeller box 22 is mounted in the water meter housing 1 and covered by the adjusting plate 23. The impeller component 21 is rotated in the impeller box 22. When water flows, the impeller component 21 is rotated by the flow of water, thereby achieving the purpose of metering. The adjusting plate 23 is used to adjust the metering accuracy of the water meter. In this embodiment, the principle and structure of the water metering device 2 are prior art and will not be described in detail.

[0022] The bubble storage device 3 includes an impeller cylinder 31, a pressure plate 32 and a disc 33. The pressure plate 32 is covered in the water meter housing 1. The disc 33 is pressed between the pressure plate 32 and the adjusting plate 23. A bubble cavity 4 is formed between the pressure plate 32 and the disc 33. One end of the impeller cylinder 31 is plugged and fixed to the impeller component 21. The other end of the impeller cylinder 31 is coaxially penetrated by the adjusting plate 23 and the disc 33, extending into the bubble cavity 4 and a pressure relief gap 331 is formed between the disc 33. The disc 33 is a deformable material including but not limited to polyurethane material. When the disc 33 is under pressure, the pressure relief gap increases or decreases with the pressure change.

[0023] Reference Figure 4In a further embodiment, a receiving groove 321 for mounting the disc 33 is provided on the pressure plate 32 to achieve the limited installation of the disc 33. An annular unloading groove 322 is coaxially provided on one side of the outer wall of the disc 33 on the bottom wall of the receiving groove 321. The inner wall of the annular unloading groove 322 with a larger diameter is flush with the inner wall of the receiving groove 321. When the water meter is in use, if the expansion force of frozen water presses the disc 33, the middle part of the disc 33 is subjected to force, and the outer wall side of the disc 33 is also subjected to pressure. After long-term use, due to the deformation effect, a gap is easily generated between the inner wall of the receiving groove 321, affecting the air tightness. The annular unloading groove 322 can disperse the pressure on the outer wall side of the disc 33 when it is under pressure, thereby reducing the deformation.

[0024] Furthermore, a sealing ring is embedded and installed between the pressure plate 32 and the water meter housing 1 to improve the sealing performance of the connection between the water metering device 2 and the bubble storage device 3 .

[0025] The working principle of a bubble-type antifreeze water meter of the present invention is as follows:

[0026] (1) When the water meter is not installed in a pipeline, there is no water flowing inside the water meter housing 1, the impeller component 21 does not rotate, and the entire water meter and the bubble cavity 4 are filled with air;

[0027] (2) When the water meter is installed on a pipeline, the entire meter body is filled with water due to the water pressure, and the bubbles in the bubble storage device 3 cannot be discharged due to the water pressure, and are stored in the bubble cavity 4. At the same time, the water flow in the meter body cannot enter the bubble cavity 4 due to the interaction between the viscosity of the water and the water pressure, thereby forming a relatively closed bubble cavity 4;

[0028] (3) In terms of structural design, the disc 33 has the characteristics of being bendable and deformable under extrusion, and forms a closed space with the pressure plate 32 and the impeller cylinder 31. A tiny gap is maintained between the impeller cylinder 31 and the disc 33 to ensure that water cannot penetrate;

[0029] (4) When encountering low temperature or extremely cold weather, the water in the watch body will freeze. The freezing of water is a relatively slow process and will gradually freeze inward and toward the central area along the surface closer to the outside. The expansion force generated by the freezing will squeeze the disc 33 to deform and bulge upward, thereby increasing the pressure relief pore 331. At this time, the water flow in the watch body will flow into the bubble cavity 4, thereby eliminating the squeezing caused by the expansion of the water volume when it freezes;

[0030] (5) When the temperature rises, the water melted from the ice in the bubble cavity 4 will flow back into the meter body through the pressure relief pore 331 between the disk 33 and the impeller cylinder 31, and the disk 33 will return to its original state.

[0031] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bubble-type antifreeze water meter, comprising a water meter housing (1), characterized in that: A water meter measuring device (2) and a bubble storage device (3) are arranged in the water meter housing (1); the water meter measuring device (2) comprises an impeller component (21), an impeller box (22) and an adjustment plate (23); the impeller box (22) is mounted in the water meter housing (1) and covered by the adjustment plate (23); the impeller component (21) is rotated in the impeller box (22); the bubble storage device (3) comprises an impeller cylinder (31), a pressure plate (32) and a disc (33) The pressure plate (32) is covered in the water meter housing (1); the disc (33) is pressed between the pressure plate (32) and the adjustment plate (23); a bubble cavity (4) is formed between the pressure plate (32) and the disc (33); one end of the impeller cylinder (31) is fixedly connected to the impeller component (21); the other end of the impeller cylinder (31) passes through the adjustment plate (23) and the disc (33) and extends into the bubble cavity (4); and a pressure relief hole (331) is formed between the impeller cylinder (31) and the disc (33).

2. A bubble type antifreeze water meter as claimed in claim 1, characterized in that: The disc (33) is made of a deformable material. When the disc (33) is under pressure, the pressure relief gap increases or decreases as the pressure changes.

3. A bubble type antifreeze water meter as claimed in claim 2, characterized in that: The pressure plate (32) is provided with a receiving groove (321) for mounting the circular disc (33); an annular unloading groove (322) is provided on the bottom wall of the receiving groove (321) on one side of the outer wall of the circular disc (33); the inner wall of the annular unloading groove (322) on the side with a larger diameter is flush with the inner wall of the receiving groove (321).

4. A bubble type antifreeze water meter as claimed in claim 1, characterized in that: A sealing ring is provided between the pressure plate (32) and the water meter housing (1).

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