Demisting device of water meter

Abstract

The invention discloses a demisting device of a water meter, and belongs to the technical field of water meters, the demisting device of the water meter comprises a water meter shell, and a meter shell water inlet pipe is fixed on one side of the water meter shell; a detection mechanism used for managing and monitoring the water consumption condition is arranged in the water meter shell, a demisting mechanism used for preventing water mist from affecting people's numerical value observation of the water meter is arranged at the top end of the water meter shell, and a switching mechanism capable of sealing and wrapping the demisting mechanism is arranged at the top end of the demisting mechanism. By arranging the demisting mechanism, a stretching rod and a demisting rubber scraping plate can be manually driven to move through a limiting clamping block, then demisting cleaning is conducted on the inner side of a transparent glass plate, water mist is prevented from affecting people's numerical value observation of the water meter, and by opening and closing an inner ring mounting block and an outer ring shell and cooperating with an externally-carried air heater, the water meter can be conveniently and rapidly cleaned. Mist and water drops in the water meter can be quickly discharged and dried, and the water meter is prevented from being continuously influenced by the mist.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water meters, and particularly relates to a water meter demisting device. BACKGROUND

[0002] A water meter is a device used to measure and record water consumption, usually installed in the water supply pipeline, which determines the user's water consumption by recording the volume or flow of water passing through, for billing, management and monitoring of water use, and is usually composed of a mechanical component and a pointer or digital display panel, and different types of water meters can be selected as needed, such as ordinary water meters, prepayment water meters or smart water meters, etc., and water meters are widely used in homes, businesses and industries, etc., and are an important tool for water resource management and billing.

[0003] When cold water flows through the water meter, water mist may be produced on the surface of the water meter if the ambient temperature is high, because the temperature difference causes water vapor to condense on the surface of the water meter, when water vapor in the air encounters the surface of a cold object, the temperature of the cold object is lower than the dew point temperature, and the water vapor condenses into liquid water, this process is called condensation, so when cold water flows through the water meter, if the ambient temperature is high, the temperature of the water meter surface is low, and the water vapor condenses into water mist on the surface of the water meter, because the surface temperature of the cold water meter is lower than the dew point temperature in the surrounding air, the water vapor in the air condenses into water mist, which affects people's observation of the water meter values, causing workers to not be able to clearly read the surface numbers when reading, resulting in errors and estimated reading.

[0004] Therefore, it is urgent to provide a water meter demisting device to solve the above problems. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a water meter demisting device.

[0006] The technical solution adopted to solve the above technical problems is: a water meter demisting device, comprising a water meter shell, one side of the water meter shell is fixed with a shell water inlet pipe, the other side of the water meter shell is fixed with a shell water outlet pipe; The inside bottom end of the water meter shell is provided with a shell separation collar, the inside top end of the water meter shell is provided with a mounting collar, and the outside of the water meter shell is fixed with a mounting flange; The inside of the water meter shell is provided with a detection mechanism for managing and monitoring water use, the top end of the water meter shell is provided with a demisting mechanism to prevent water mist from affecting people's observation of the water meter values, and the top end of the demisting mechanism is provided with a switch mechanism capable of sealing and wrapping the demisting mechanism.

[0007] Furthermore, the detection mechanism includes a filter screen that is fitted inside the separator ring of the watch case. A screen gasket is attached to the top of the filter screen, and an impeller box is sealed at the top of the screen gasket. The upper and lower ends of the impeller box are respectively a water outlet tangent hole and a water inlet tangent hole.

[0008] With the above technical solution, in actual use, water flows into the water meter housing through the water inlet pipe, and after being filtered by the filter screen, it enters the impeller box through the water inlet tangent hole. Then, the water flows out of the impeller box through the water outlet tangent hole and finally flows out through the water outlet pipe of the housing.

[0009] Furthermore, a meter core washer is attached to the top of the mounting collar, a meter core counter is sealed and installed at the top of the meter core washer, and a water meter impeller is drivenly connected to the bottom of the meter core counter.

[0010] With the above technical solution, the water flow entering from the inlet tangential hole will impact the water meter impeller to make it rotate, thereby driving the meter core counter to measure. The meter core gasket seals the mounting ring and the meter core counter to prevent water vapor from escaping from the gaps, thus generating water mist and affecting the observation of the water meter reading.

[0011] Furthermore, the defogging mechanism includes a first washer that fits onto the top of the water meter casing, and an opening and closing inner ring is rotatably connected to the top of the first washer. Inner ring mounting blocks are fixedly installed on both sides of the opening and closing inner ring.

[0012] With the above technical solution, when water vapor is generated inside the water meter and needs to be discharged, the inner ring can be rotated to a suitable opening position by operating the inner ring mounting block, so that hot or humid air can be discharged smoothly.

[0013] Furthermore, an outer ring housing is rotatably mounted on the outside of the opening and closing inner ring. The outside of the inner ring mounting block is slidably connected to the outer opening of the outer ring housing. An outer ring sealing ring is fitted into the inner opening of the outer ring housing. One side of the outer ring sealing ring is sealed to the outside of the opening and closing inner ring.

[0014] With the above technical solution, when the openings of the inner ring and the outer ring housing are not in the same direction, the inner opening of the outer ring housing is sealed to the inner wall of the inner ring through the outer ring sealing ring, ensuring a sealed environment inside the water meter. When it is necessary to open the inner ring, the inner ring is manually driven to rotate through the outer ring housing by the inner ring mounting block, so that the openings of the inner ring and the outer ring housing are in the same direction. Then, the internal water vapor can be discharged and dried by equipment such as a hot air blower. The operation is simple and efficient.

[0015] Furthermore, a defogging rubber scraper is slidably installed on the top of the outer ring shell, a tension rod is fixed on one side of the defogging rubber scraper, a limit block is fixed on one end of the tension rod, and a slot is provided on one side of the top of the outer ring shell to engage with the limit block.

[0016] With the above technical solution, when fog affects the water meter reading, the tension rod and the defogging rubber scraper can be manually pulled out through the slot of the limit block. The defogging rubber scraper will move through the sliding groove at the top of the outer ring housing to scrape away the fog, thereby quickly restoring the clarity of the water meter reading.

[0017] Furthermore, a transparent glass plate is attached to the top of the outer ring shell, the bottom of the transparent glass plate is tightly attached to the top of the defogging rubber scraper, and a second gasket is attached to the top of the transparent glass plate.

[0018] The above technical solution uses a transparent glass plate to seal the top of the outer ring shell without affecting the observation of the water meter readings. This protects the internal components while meeting the daily needs for observing water meter readings.

[0019] Furthermore, the switching mechanism includes a water meter housing that is sealed and installed on the top of the second gasket. The bottom end of the water meter housing is fixed with a housing bolt that extends through and out of the mounting flange. A nut is installed on the external thread of the housing bolt. A housing mounting plate is attached to the top of the water meter housing. A fixing screw that extends through and into the interior of a transparent glass plate is threaded on the top of the housing mounting plate.

[0020] With the above technical solution, after the water meter casing is installed with the casing bolts and mounting flange, the internal meter counter and meter gasket will be squeezed. This effectively prevents water vapor from escaping from the gap between the meter counter and the mounting ring, thus avoiding the generation of water mist and ensuring that the water meter reading can be clearly and accurately observed.

[0021] Furthermore, a sealing collar is threadedly installed on the outer bottom end of the water meter housing, and a dust filter collar is nested on the outer top end of the water meter housing. Two collar screws are installed on the outer thread of the dust filter collar, which respectively penetrate and extend to the inner ring mounting block.

[0022] Through the above technical solution, the two sealing rings of the sealing collar provide a secondary seal between the housing mounting plate and the sealing collar under normal conditions. During ventilation and drying operations, the sealing collar is manually unscrewed. At this time, the two sealing rings of the sealing collar no longer provide a sealing function. Then, the dust filter collar is driven to rotate through the water meter housing. Since the dust filter collar is connected to the inner ring mounting block, it will drive the inner ring mounting block and the opening and closing inner ring to rotate accordingly. This causes the opening of the opening and closing inner ring to be exposed and aligned with the filter screen of the dust filter collar, thereby achieving ventilation and air exchange, drying the interior and removing moisture. The filter screen of the dust filter collar can prevent a large number of impurities from entering.

[0023] Furthermore, a cover cover is rotatably mounted on the top of the cover mounting plate, a cover cover anti-detachment block is fixed at one end of the cover cover, a mounting plate limiting block is fixed on one side of the cover mounting plate, and a collar limiting block is fixed on one side of the sealing collar.

[0024] With the above technical solution, under normal circumstances, the cover and the watch cover limit the mounting plate limiting block and the collar limiting block through the cover anti-detachment plug, so that the sealing collar cannot be rotated by threads, thus ensuring the stability of the sealing state. When the cover and the cover anti-detachment plug are folded and separated, the sealing collar can be rotated by threads, making it easy to move it downwards to cooperate with the corresponding operation.

[0025] The beneficial effects of this invention are as follows: (1) The present invention is equipped with a defogging mechanism, which can be manually driven by the limit block to move the tension rod and the defogging rubber scraper, thereby cleaning the inside of the transparent glass plate to prevent water mist from affecting people's observation of the water meter values. It can also be opened and closed by the inner ring mounting block and the outer ring shell. With the help of the external hot air blower, the fog and water droplets inside the water meter can be quickly discharged and dried to prevent the water meter from being continuously affected by fog. (2) By providing a switching mechanism, the present invention can be quickly opened when the defogging function is needed, making it easy to operate. In the non-working state, the defogging mechanism can be sealed and wrapped to isolate dust, moisture and external impact, and reduce damage to the defogging mechanism. (3) The present invention has a detection mechanism that can determine the user’s water consumption by recording the volume or flow rate of water through the meter core counter and water meter impeller, and is used for billing, management and monitoring of water use. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the ventilation and exhaust structure of the present invention; Figure 3 This is an exploded structural diagram of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the present invention; Figure 5 This is an exploded structural diagram of the detection mechanism of the present invention; Figure 6 This is an exploded structural diagram of the defogging mechanism of the present invention; Figure 7 This is a schematic diagram of the inner ring mounting block and outer ring shell structure of the present invention; Figure 8 This is a schematic diagram of the outer ring shell structure of the present invention; Figure 9 This is an exploded view of the switching mechanism of the present invention; Figure 10 This is a schematic diagram of the opening and closing inner ring and the dust filter ring structure of the present invention; Figure 11 This is a schematic diagram of the structure of the water meter housing, housing mounting plate, and second washer of the present invention.

[0027] Reference numerals: 1. Water meter casing; 2. Casing inlet pipe; 3. Casing outlet pipe; 4. Casing separator ring; 5. Mounting ring; 6. Mounting flange; 7. Detection mechanism; 701. Filter screen; 702. Filter screen gasket; 703. Impeller box; 704. Meter core gasket; 705. Meter core counter; 706. Water meter impeller; 8. Demisting mechanism; 801. First gasket; 802. Opening / closing inner ring; 803. Inner ring mounting block; 804. Outer ring housing; 805. Outer ring 806. Sealing ring; 807. Defogging rubber scraper; 808. Tension rod; 809. Limiting block; 810. Transparent glass plate; 811. Second washer; 9. Switching mechanism; 901. Water meter housing; 902. Housing bolt; 903. Housing mounting plate; 904. Fixing screw; 905. Sealing collar; 906. Dust filter collar; 907. Collar screw; 908. Housing cover; 909. Cover anti-detachment block; 910. Mounting plate limiting block; 911. Collar limiting block. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] like Figures 1-11As shown, a demisting device for a water meter according to this embodiment includes a water meter housing 1. A water inlet pipe 2 is fixed to one side of the water meter housing 1, and a water outlet pipe 3 is fixed to the other side of the water meter housing 1. A housing partition ring 4 is provided at the bottom of the interior of the water meter housing 1, and an installation ring 5 is provided at the top of the interior of the water meter housing 1. An installation flange 6 is fixed to the exterior of the water meter housing 1. A detection mechanism 7 for managing and monitoring water usage is provided inside the water meter housing 1. The detection mechanism 7 includes a filter screen 701 fitted inside the housing partition ring 4. A screen gasket 702 is attached to the top of the filter screen 701. An impeller box 703 is sealed and installed at the top of the screen gasket 702. The upper and lower ends of the impeller box 703 are respectively a water outlet tangent hole and a water inlet tangent hole. The installation ring... The top of the mounting ring 5 is fitted with a core gasket 704, and the top of the core gasket 704 is sealed with a core counter 705. The bottom of the core counter 705 is connected to the water meter impeller 706. In actual use, water flows into the water meter housing 1 through the water inlet pipe 2. After being filtered by the filter screen 701, it enters the impeller box 703 through the water inlet tangent hole. The water flow entering from the water inlet tangent hole will impact the water meter impeller 706 to make it rotate, thereby driving the core counter 705 to measure. Then the water flow flows out of the impeller box 703 through the water outlet tangent hole and finally flows out through the water outlet pipe 3 of the housing. The core gasket 704 seals the mounting ring 5 and the core counter 705 to prevent water vapor from escaping from the gaps and generating water mist, which would affect the observation of the water meter value.

[0030] like Figures 3-8As shown, the top of the water meter casing 1 is provided with a defogging mechanism 8 to prevent water mist from affecting people's observation of the water meter readings. The defogging mechanism 8 includes a first washer 801 that fits against the top of the water meter casing 1. The top of the first washer 801 is rotatably connected to an opening and closing inner ring 802. Inner ring mounting blocks 803 are fixedly installed on both sides of the opening and closing inner ring 802. An outer ring housing 804 is rotatably installed on the outside of the opening and closing inner ring 802. The outside of the inner ring mounting blocks 803 is slidably connected to the outer opening of the outer ring housing 804. An outer ring is fitted into the inner opening of the outer ring housing 804. A sealing ring 805 is provided, with one side of the outer ring 805 sealingly connected to the outside of the opening and closing inner ring 802. A defogging rubber scraper 806 is slidably installed on the top of the outer ring housing 804. A tension rod 807 is fixed to one side of the defogging rubber scraper 806, and a limit block 808 is fixed to one end of the tension rod 807. A groove is provided on one side of the top of the outer ring housing 804 to engage with the limit block 808. A transparent glass plate 809 is attached to the top of the outer ring housing 804, and the bottom end of the transparent glass plate 809 is tightly attached to the top of the defogging rubber scraper 806. A second washer 810 is attached to the top of the glass plate 809. The transparent glass plate 809 seals the top of the outer ring housing 804 without affecting the observation of the water meter reading. This protects the internal components while meeting the daily needs of water meter reading observation. Furthermore, when the openings of the inner ring 802 and the outer ring housing 804 are not in the same direction, the inner opening of the outer ring housing 804 is sealed to the inner wall of the inner ring 802 via the outer ring sealing ring 805, ensuring a sealed environment inside the water meter. If fog affects the water meter reading, the limit block 80 can be manually activated. The slot at 8 pulls out the tension rod 807 and the defogging rubber scraper 806. The defogging rubber scraper 806 moves through the top groove of the outer ring housing 804 to scrape away the fog, thereby quickly restoring the clarity of the water meter reading. When water vapor is generated inside the water meter and needs to be discharged, the inner ring 802 is manually driven to rotate through the outer ring housing 804 via the inner ring mounting block 803, so that the openings of the inner ring 802 and the outer ring housing 804 are in the same direction. Then, the internal water vapor can be discharged and dried by equipment such as a hot air blower. The operation is simple and efficient.

[0031] like Figures 3-11As shown, the top of the defogging mechanism 8 is equipped with a switching mechanism 9 that can seal and enclose the defogging mechanism 8. The switching mechanism 9 includes a water meter housing cover 901 that is sealed and installed on the top of the second gasket 810. A housing bolt 902 with one end penetrating through and extending to the outside of the mounting flange 6 is fixed to the bottom end of the water meter housing cover 901. A nut is installed on the external thread of the housing bolt 902. A housing mounting plate 903 is attached to the top of the water meter housing cover 901. A fixing screw 904 with one end penetrating through and extending into the inside of the transparent glass plate 809 is installed on the top thread of the housing mounting plate 903. A sealing collar 905 is installed on the external bottom thread of the water meter housing cover 901. The outer top of the water meter housing is nested with a dust filter ring 906. Two ring screws 907, each penetrating and extending to the inner ring mounting block 803, are threaded onto the external surface of the dust filter ring 906. A housing cover 908 is rotatably mounted on the top of the housing mounting plate 903. A cover anti-detachment block 909 is fixed to one end of the housing cover 908. A mounting plate limiting block 910 is fixed to one side of the housing mounting plate 903, and a ring limiting block 911 is fixed to one side of the sealing ring 905. After the water meter housing 901 is installed with the mounting flange 6 via housing bolts 902, it will compress the internal meter counter 705 and meter gasket 704, thus achieving [the desired effect]. To effectively prevent moisture from escaping through the gap between the meter counter 705 and the mounting ring 5, thus avoiding water mist, and ensuring clear and accurate observation of the water meter reading, the two sealing rings of the sealing ring 905 provide a secondary seal between the housing mounting plate 903 and the sealing ring 905 under normal conditions. The housing cover 908 limits the mounting plate limiting block 910 and the ring limiting block 911 through the cover anti-detachment insert 909, preventing the sealing ring 905 from rotating threadedly, ensuring the stability of the seal. During ventilation and drying operations, after folding and separating the housing cover 908 and the cover anti-detachment insert 909, the sealing ring 905 can be rotated threadedly. 5. Manually unscrew the sealing ring 905. At this time, the two sealing rings of the sealing ring 905 no longer have a sealing function. Move it downwards to cooperate with the corresponding operation. Then, manually drive the dust filter ring 906 to rotate through the water meter housing 901. Since the dust filter ring 906 is connected to the inner ring mounting block 803, it will drive the inner ring mounting block 803 and the opening and closing inner ring 802 to rotate, so that the opening of the opening and closing inner ring 802 is exposed and is in the same direction as the filter screen of the dust filter ring 906, thereby realizing ventilation and air exchange. The hot air blower dries the inside and removes moisture. The filter screen of the dust filter ring 906 can prevent the hot air blower from blowing impurities into the water meter.

[0032] The working principle of this embodiment is as follows: In actual use, water flows into the water meter housing 1 through the inlet pipe 2. After being filtered by the filter screen 701 to remove impurities, the water enters the impeller box 703 through the inlet tangential hole. The water flowing in through the inlet tangential hole impacts the water meter impeller 706, causing it to rotate, thereby driving the meter counter 705 to perform measurement. Afterward, the water flows out of the impeller box 703 through the outlet tangential hole and finally flows out through the water outlet pipe 3. The meter gasket 704 seals the mounting ring 5 and the meter counter 705 to prevent water vapor from escaping through the gaps and generating water mist, which would affect the observation of the water meter reading. The transparent glass plate 809 seals the top of the outer ring housing 804 without affecting the observation of the water meter reading, thus protecting the internal components. This design satisfies the daily need for observing water meter readings. When the openings of the inner ring 802 and the outer ring housing 804 are not in the same direction, the inner opening of the outer ring housing 804 is sealed to the inner wall of the inner ring 802 via the outer ring sealing ring 805, ensuring a sealed environment inside the water meter. After the water meter housing 901 is installed with the mounting flange 6 via the housing bolts 902, it will compress the internal meter counter 705 and meter gasket 704. This effectively prevents water vapor from escaping from the gap between the meter counter 705 and the mounting sleeve 5, thus avoiding water mist and ensuring clear and accurate observation of the water meter readings. Normally, the two sealing rings of the sealing sleeve 905 are connected to the housing mounting plate 903 and the sealing sleeve 905. A secondary seal is achieved between the cover and the meter cover 908. The cover anti-detachment insert 909 limits the mounting plate limiting block 910 and the collar limiting block 911, preventing the sealing collar 905 from rotating threadedly and ensuring the stability of the seal. When fog affects the water meter reading, the tension rod 807 and the defogging rubber scraper 806 can be manually pulled out through the slot of the limiting block 808. The defogging rubber scraper 806 will move through the sliding groove at the top of the outer ring housing 804 to scrape away the fog, thereby quickly restoring the clarity of the water meter reading. When water vapor is generated inside the water meter and needs to be discharged, the inner ring mounting block 803 drives the inner ring 802 to rotate through the outer ring housing 804, so that the openings of the inner ring 802 and the outer ring housing 804 are in the same position. In one direction, internal moisture can be discharged and dried using equipment such as a hot air blower. The operation is simple and efficient. During the ventilation and drying operation, after folding and separating the cover 908 and the cover anti-detachment block 909, the sealing ring 905 can be rotated by thread. Manually unscrew the sealing ring 905. At this time, the two sealing rings of the sealing ring 905 no longer have a sealing function. Move it downward to cooperate with the corresponding operation. Then, manually drive the dust filter ring 906 to rotate through the water meter cover 901. Since the dust filter ring 906 is connected to the inner ring mounting block 803, it will drive the inner ring mounting block 803 and the opening and closing inner ring 802 to rotate, so that the opening of the opening and closing inner ring 802 is exposed and is in the same direction as the filter screen of the dust filter ring 906.This achieves ventilation, dries the interior and removes moisture using a hot air blower, and the filter screen of the 906 dust filter ring prevents the hot air blower from blowing impurities into the water meter.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A defogging device for a water meter, comprising a water meter casing (1), characterized in that: A water inlet pipe (2) is fixed on one side of the water meter casing (1), and a water outlet pipe (3) is fixed on the other side of the water meter casing (1). The water meter housing (1) has a housing separation collar (4) at the bottom inside, an installation collar (5) at the top inside, and an installation flange (6) fixed to the outside of the water meter housing (1). The water meter casing (1) is equipped with a detection mechanism (7) for managing and monitoring water usage. The top of the water meter casing (1) is equipped with a defogging mechanism (8) to prevent water mist from affecting people's observation of the water meter values. The top of the defogging mechanism (8) is equipped with a switch mechanism (9) that can seal and wrap the defogging mechanism (8).

2. The demisting device for a water meter according to claim 1, characterized in that, The detection mechanism (7) includes a filter screen (701) fitted inside the housing separator ring (4). The top of the filter screen (701) is fitted with a screen gasket (702). The top of the screen gasket (702) is sealed with an impeller box (703). The upper and lower ends of the impeller box (703) are respectively the water outlet tangent hole and the water inlet tangent hole.

3. The demisting device for a water meter according to claim 2, characterized in that, The top of the mounting collar (5) is fitted with a meter core washer (704), the top of the meter core washer (704) is sealed with a meter core counter (705), and the bottom of the meter core counter (705) is connected to a water meter impeller (706).

4. The demisting device for a water meter according to claim 1, characterized in that, The defogging mechanism (8) includes a first washer (801) that fits against the top of the water meter casing (1). The top of the first washer (801) is rotatably connected to an opening and closing inner ring (802). Inner ring mounting blocks (803) are fixedly installed on both sides of the opening and closing inner ring (802).

5. The demisting device for a water meter according to claim 4, characterized in that, An outer ring housing (804) is rotatably mounted on the outside of the opening and closing inner ring (802). The outer side of the inner ring mounting block (803) is slidably connected to the outer opening of the outer ring housing (804). An outer ring sealing ring (805) is fitted into the inner opening of the outer ring housing (804). One side of the outer ring sealing ring (805) is sealed to the outside of the opening and closing inner ring (802).

6. The demisting device for a water meter according to claim 5, characterized in that, A defogging rubber scraper (806) is slidably installed on the top of the outer ring housing (804). A tension rod (807) is fixed on one side of the defogging rubber scraper (806). A limit block (808) is fixed at one end of the tension rod (807). A slot is provided on one side of the top of the outer ring housing (804) to fit and connect with the limit block (808).

7. The demisting device for a water meter according to claim 5, characterized in that, The top of the outer ring housing (804) is fitted with a transparent glass plate (809), the bottom of the transparent glass plate (809) is tightly fitted with the top of the defogging rubber scraper (806), and the top of the transparent glass plate (809) is fitted with a second washer (810).

8. The demisting device for a water meter according to claim 7, characterized in that, The switching mechanism (9) includes a water meter housing (901) sealed and installed on the top of the second washer (810). The bottom end of the water meter housing (901) is fixed with a housing bolt (902) that extends through and out of the mounting flange (6). The outer thread of the housing bolt (902) is fitted with a nut. The top end of the water meter housing (901) is fitted with a housing mounting plate (903). The top end of the housing mounting plate (903) is threaded with a fixing screw (904) that extends through and out of the transparent glass plate (809).

9. The demisting device for a water meter according to claim 8, characterized in that, A sealing collar (905) is threaded on the bottom outer end of the water meter housing (901), and a dust filter collar (906) is nested on the top outer end of the water meter housing (901). Two collar screws (907) are threaded on the outer outer threads of the dust filter collar (906) and extend through and to the inner ring mounting block (803).

10. The demisting device for a water meter according to claim 9, characterized in that, The top of the housing mounting plate (903) is rotatably mounted with a housing cover (908), one end of the housing cover (908) is fixed with a cover anti-detachment plug (909), one side of the housing mounting plate (903) is fixed with a mounting plate limiting block (910), and one side of the sealing collar (905) is fixed with a collar limiting block (911).

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