Frost crack prevention secondary sealing air bag bowl structure of intelligent water meter

Abstract

The utility model relates to the technical field of intelligent water meters, in particular to a frost crack prevention secondary sealing air bag bowl structure of an intelligent water meter. The intelligent water meter comprises an intelligent water meter body, a through opening is formed in the intelligent water meter body, an air bag bowl is arranged on the intelligent water meter body, the air bag bowl blocks the through opening, a sealing plate is arranged in the air bag bowl, and the sealing plate is installed on the air bag bowl in an ultrasonic welding mode. Original independence and stability of an inner cavity of the intelligent water meter body are kept through the structure of the integrated design of the air bag bowl and the sealing plate, a small part of volume can be expanded by means of elasticity of the sealing plate when water expands or freezes, and sealing of the inner cavity of the intelligent water meter body is guaranteed. The extrusion of the water expansion pressure on the counting gear box structure is buffered, all functions of the intelligent water meter can be recovered in time after the temperature of ice water rises, the risk of frost cracking of the water meter in the cold environment is avoided, and the maintenance cost of the intelligent water meter in the cold region is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of smart water meter technology, and in particular to a secondary sealing airbag bowl structure for anti-freezing and cracking of smart water meters. Background Technology

[0002] A smart water meter is a new type of water meter that uses modern microelectronics technology, sensing technology, and smart IC card technology to measure water consumption, transmit data, and settle transactions. Compared with traditional mechanical water meters, it has a higher level of intelligence and convenience, and is widely used in residential life, industrial production, agricultural irrigation, urban water supply and other fields.

[0003] Modern smart water meters often suffer from freezing damage to the meter base cavity when used in extreme temperatures, especially in low-temperature environments such as winter in rural areas. Even if the outer casing of the base meter does not freeze, the expansion of the fluid inside the meter due to freezing can compress the structure of the counting gear box, affecting the stability of the metering. The resulting losses are often not limited to the direct cost of replacing the water meter, but also include the waste of water resources. Water meter breakage and flooding can cause environmental disasters and numerous inconveniences and difficulties for people's production and daily life. Moreover, repairing or replacing a frozen water meter requires the complete disassembly and reassembly of the water meter and its upstream and downstream pipe sections, which is time-consuming, labor-intensive, and costly. Utility Model Content

[0004] To address the problems existing in the background technology, a secondary sealing airbag bowl structure for anti-freezing and cracking of smart water meters is proposed.

[0005] This utility model proposes a secondary sealing airbag bowl structure for anti-freezing and cracking of smart water meters, including a smart water meter with an opening. An airbag bowl is installed on the smart water meter to seal the opening. A sealing plate is installed inside the airbag bowl and is installed on the airbag bowl by ultrasonic welding. An air pressure regulating mechanism is provided on the airbag bowl. The air pressure regulating mechanism uses the deformation of the sealing plate as a power source and reduces the pressure on the sealing plate by transmitting the water flow above the sealing plate to the regulating cylinder.

[0006] Preferably, the air pressure regulating mechanism consists of a sealing frame, a top rod, a top head, a lifting spring, a transmission assembly, a transmission rod, an adjusting cylinder, a piston head, a return spring, and a connecting pipe. The sealing frame is mounted on the air bladder cup, the top rod is slidably mounted on the sealing frame, the top head is mounted on the top of the top rod and contacts the sealing plate, the lifting spring is sleeved on the top rod and used to return the pressed-down top head to its initial position, the transmission assembly is mounted on the sealing frame, the adjusting cylinder is mounted on the air bladder cup, the transmission rod is slidably mounted on the sealing frame and one end of the transmission rod extends into the adjusting cylinder, the piston head is slidably mounted in the adjusting cylinder, the return spring is mounted in the adjusting cylinder and one end of the return spring is connected to the piston head, the connecting pipe is mounted in the adjusting cylinder and the other end of the connecting pipe is connected to the sealing plate and is in communication with the top of the sealing plate.

[0007] Preferably, the top of the top end is designed with an arc surface to reduce the contact between the top end and the sealing plate and reduce interference with the deformation of the sealing plate.

[0008] Preferably, both the push rod and the transmission rod have grooves, and each groove has a toothed plate. The transmission assembly consists of a rotating rod and two rotating gears. The two rotating gears are sleeved on the rotating rod and extend into the two grooves respectively, meshing with the two toothed plates respectively.

[0009] Preferably, the connecting pipe is made of flexible hose and is loose between the sealing plate and the regulating cylinder to reduce the pressure of the water flow above the sealing plate on the regulating cylinder.

[0010] Preferably, a base is installed on the sealing frame, and the base is made of rubber material to avoid hard contact between the bottom end of the top rod and the sealing frame.

[0011] Preferably, the sealing plate is made of elastic plastic that can stretch and contract appropriately.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] The integrated design of the air bladder bowl and sealing plate maintains the original independence and stability of the smart water meter's internal cavity. When the water expands or freezes, the sealing plate can expand a small portion of its volume, ensuring the sealing of the smart water meter's internal cavity and buffering the pressure of the expanding water on the counting gear box structure. It can also restore all the functions of the smart water meter in a timely manner after the ice water warms up, avoiding the risk of the water meter freezing and cracking in cold environments, and greatly reducing the maintenance cost of smart water meters used in cold regions.

[0014] The outer shell of the air bladder bowl has a bottom-support and leak-proof function, and can provide sufficient volume when the water freezes and expands, thereby effectively preventing water leakage and flooding hazards caused by the freezing and cracking of the smart water meter.

[0015] When repairing a frozen and cracked smart water meter, it is not necessary to disassemble the entire smart water meter and the upstream and downstream pipe sections. Only a new air bladder cup and sealing plate need to be replaced, which is simple and convenient and greatly reduces maintenance costs.

[0016] By setting up a top head, a top rod, a transmission assembly, and a transmission rod, the deformation of the sealing plate can be converted into the power for the movement of the piston head. Through the movement of the piston head, the water flow above the sealing plate can be guided into the regulating cylinder under the joint action of the connecting pipe. This reduces the pressure above the sealing plate, thereby reducing damage to the sealing plate and improving its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the air bladder bowl in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the medium-pressure adjustment mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the air bladder bowl and the smart water meter in this utility model.

[0021] Reference numerals in the attached diagram: 1. Smart water meter; 2. Airbag bowl; 3. Sealing plate; 4. Top rod; 5. Top head; 6. Lifting spring; 7. Rotating rod; 8. Rotating gear; 9. Transmission rod; 10. Adjusting cylinder; 11. Piston head; 12. Return spring; 13. Connecting pipe; 14. Base; 15. Sealing frame. Detailed Implementation

[0022] like Figures 1-4 As shown, this utility model proposes a secondary sealing airbag bowl structure for anti-freezing and cracking of a smart water meter, comprising: a smart water meter 1, an opening on the smart water meter 1, an airbag bowl 2 on the smart water meter 1, the airbag bowl 2 sealing the opening, an external thread on the smart water meter 1, and an internal thread on the airbag bowl 2, the internal thread being threadedly connected to the external thread, thus allowing the airbag bowl 2 to be installed onto the smart water meter 1 via threaded installation, facilitating the installation and removal of the airbag bowl 2, and a sealing plate 3 inside the airbag bowl 2, the sealing plate 3 being installed onto the airbag bowl 2 by ultrasonic welding. 3. It is made of elastic plastic that can stretch appropriately. When the ice and water change inside the smart water meter 1, the sealing plate 3 will deform. At 2-4 MPa, it can buffer the volume expansion caused by the fluid deformation due to pressure inside the meter, which will squeeze the internal counting gear box structure and avoid the possibility of unstable measurement. When the water inside the smart water meter 1 freezes and the expansion pressure exceeds 4 MPa or even higher, the sealing plate 3 inside the meter may freeze and crack. At this time, the air bladder bowl 2 can still ensure the sealing state of the smart water meter 1, and can also restore the function of the smart water meter 1 when the temperature rises.

[0023] The airbag bowl 2 is equipped with an air pressure regulating mechanism. This mechanism uses the deformation of the sealing plate 3 as a power source, transmitting water flow above the sealing plate 3 to the regulating cylinder 10 to reduce the pressure on the sealing plate 3. The air pressure regulating mechanism consists of a sealing frame 15, a push rod 4, a push head 5, a lifting spring 6, a transmission assembly, a transmission rod 9, the regulating cylinder 10, a piston head 11, a return spring 12, and a connecting pipe 13. The sealing frame 15 is mounted on the airbag bowl 2, and the push rod 4 is slidably mounted on the sealing frame 15. A base 14 is mounted on the sealing frame 15. The base 14 is made of rubber to prevent hard contact between the bottom end of the push rod 4 and the sealing frame 15. The push head 5 is mounted on the top end of the push rod 4 and contacts the sealing plate 3. The top of the push head 5 is curved to reduce contact between the push head 5 and the sealing plate 3. To minimize interference with the deformation of the sealing plate 3, a lifting spring 6 is sleeved on the top rod 4 to restore the pressed-down top head 5 to its initial position. The transmission assembly is mounted on the sealing frame 15, the adjusting cylinder 10 is mounted on the air bladder bowl 2, the transmission rod 9 is slidably mounted on the sealing frame 15, and one end of the transmission rod 9 extends into the adjusting cylinder 10. The piston head 11 is slidably mounted inside the adjusting cylinder 10, the return spring 12 is mounted inside the adjusting cylinder 10, and one end of the return spring 12 is connected to the piston head 11. The connecting pipe 13 is mounted inside the adjusting cylinder 10, and the other end of the connecting pipe 13 is connected to the sealing plate 3 and is in communication with the top of the sealing plate 3. The connecting pipe 13 is made of flexible hose material, and the connecting pipe 13 is loose between the sealing plate 3 and the adjusting cylinder 10 to reduce excessive pressure from the top of the sealing plate 3 acting on the adjusting cylinder 10.

[0024] Both the top rod 4 and the transmission rod 9 have grooves, and each groove has a toothed plate. The transmission assembly consists of a rotating rod 7 and two rotating gears 8. The two rotating gears 8 are sleeved on the rotating rod 7 and extend into the two grooves respectively, meshing with the two toothed plates respectively.

[0025] In this embodiment, during use, when the pressure above the sealing plate 3 increases, the sealing plate 3 will deform, thereby compressing the top head 5 downward. The top head 5 applies this pressure to the top rod 4, causing the top rod 4 to move downward. During this process, the transmission rod 9 will move laterally through the transmission assembly, which in turn pushes the piston head 11 to move. At this time, the bottom end of the connecting pipe 13 is open, causing the water flow above the sealing plate 3 to enter the regulating cylinder 10 through the connecting pipe 13. This can reduce the pressure above the sealing plate 3, reduce damage to the sealing plate 3, and improve the service life of the sealing plate 3. After the pressure above the sealing plate 3 returns to normal, the water flow in the regulating cylinder 10 will flow back to the top of the sealing plate 3 under the push of the return spring 12 and the piston head 11. At the same time, the top head 5 is not compressed by the sealing plate 3 and returns to its initial position under the action of the lifting spring 6.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A secondary sealing airbag bowl structure for anti-freezing and cracking of a smart water meter, comprising: A smart water meter (1) has an opening and an air bladder (2) that seals the opening. The smart water meter (1) is characterized by: A sealing plate (3) is provided inside the airbag bowl (2), and the sealing plate (3) is installed on the airbag bowl (2) by ultrasonic welding; The air pressure regulating mechanism is provided on the air bladder bowl (2). The air pressure regulating mechanism is powered by the deformation of the sealing plate (3). By transmitting the water flow above the sealing plate (3) to the regulating cylinder (10), the pressure on the sealing plate (3) is reduced.

2. The anti-freezing and cracking secondary sealing airbag bowl structure for a smart water meter according to claim 1, characterized in that, The air pressure regulating mechanism consists of a sealing frame (15), a top rod (4), a top head (5), a lifting spring (6), a transmission assembly, a transmission rod (9), an adjusting cylinder (10), a piston head (11), a return spring (12), and a connecting pipe (13). The sealing frame (15) is installed on the airbag bowl (2), the push rod (4) is slidably installed on the sealing frame (15), the push head (5) is installed on the top of the push rod (4), the push head (5) is in contact with the sealing plate (3), the lifting spring (6) is sleeved on the push rod (4) to restore the pressed push head (5) to the initial position, the transmission assembly is set on the sealing frame (15), the adjusting cylinder (10) is installed on the airbag bowl (2), the transmission rod (9) is slidably installed on the sealing frame (15), one end of the transmission rod (9) extends into the adjusting cylinder (10), the piston head (11) is slidably installed into the adjusting cylinder (10), the return spring (12) is installed into the adjusting cylinder (10), one end of the return spring (12) is connected to the piston head (11), the connecting pipe (13) is installed into the adjusting cylinder (10), the other end of the connecting pipe (13) is connected to the sealing plate (3) and is in communication with the top of the sealing plate (3).

3. The anti-freezing and cracking secondary sealing airbag bowl structure for a smart water meter according to claim 2, characterized in that, The top of the top head (5) is set with an arc surface to reduce the contact between the top head (5) and the sealing plate (3) and reduce the interference with the deformation of the sealing plate (3).

4. The anti-freezing and cracking secondary sealing airbag bowl structure for a smart water meter according to claim 2, characterized in that, The top rod (4) and the transmission rod (9) are both provided with grooves, and toothed plates are provided in both grooves. The transmission assembly consists of a rotating rod (7) and two rotating gears (8). The two rotating gears (8) are both sleeved on the rotating rod (7). The two rotating gears (8) extend into the two grooves respectively and mesh with the two toothed plates respectively.

5. The anti-freezing and cracking secondary sealing airbag bowl structure for a smart water meter according to claim 2, characterized in that, The connecting pipe (13) is made of flexible hose and is loose between the sealing plate (3) and the regulating cylinder (10), which reduces the pressure of the water flow above the sealing plate (3) on the regulating cylinder (10).

6. The anti-freezing and cracking secondary sealing airbag bowl structure for a smart water meter according to claim 2, characterized in that, A base (14) is installed on the sealing frame (15). The base (14) is made of rubber material to avoid hard contact between the bottom end of the top rod (4) and the sealing frame (15).

7. The anti-freezing and cracking secondary sealing airbag bowl structure for a smart water meter according to claim 1, characterized in that, The sealing plate (3) is made of elastic plastic that can stretch appropriately.

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