Anti-freezing machine core of water meter

Abstract

The utility model discloses a water meter anti-freezing machine core which comprises an impeller box and a filter screen, and air grooves are formed in flow guide blocks beside a water outlet of the impeller box. The sealing ring is arranged between the impeller box and the filter screen; and the upper end of the sealing ring is provided with a plugging lug protruding into the air groove to seal the air groove. The water meter shell has the advantages that after the water meter shell is assembled, the blocking protruding block protrudes into the air groove to seal the air groove to form a good sealed space, so that a plurality of breathing air bags are formed, it can be effectively guaranteed that air escapes, and meanwhile the anti-freezing capacity of the machine core is improved; the water meter is prevented from bursting due to volume expansion of water in the meter shell; and after the water in the water meter is thawed, the air in the air groove recovers to cope with the coming of the next cold wave.

Description

TECHNICAL FIELD

[0001] The utility model relates to water gauge structure technical field especially is related to a water gauge anti -freezing movement. BACKGROUND

[0002] Water gauge is the instrument that measures water flow, is mostly water's cumulative flow measurement, is used for recording water gauge of tap water water consumption, is installed on the water pipe, when the user discharges water, the water flows into the watch case in the water gauge, the measuring device in the watch case measures the water flow, and the water gauge movement is called the heart of the water gauge and is used for accurately measuring water consumption.

[0003] When the extreme low temperature weather attacks, the water medium in the water gauge becomes ice medium, makes the pipeline at both ends to be ice sealed, the water in the water gauge becomes ice and expands, and the expansion pressure is rapidly transmitted to the watch case and the component of the measuring device immersed in the water, to cause the water gauge to burst. The damage of the water gauge not only makes the water gauge itself unable to work, but also causes the influence to the effective management of water resources of the water supply department, and the national interests are damaged, and the water gauge is frequently replaced or the additional anti -icing device is configured for the water gauge, which is not only high in cost, but also wastes a lot of manpower and material resources, and needs to be improved. UTILITY MODEL CONTENT

[0004] One of the technical problems solved by the present application is to overcome the defects of the above related technologies, and provide a water gauge anti -freezing movement to avoid the burst of the water gauge after freezing in the extreme low temperature weather.

[0005] The utility model solves the technical problem and adopts the technical scheme: a water gauge anti -freezing movement, including impeller box and filter screen, the air groove is evenly arranged on the flow guide block beside the water outlet of the impeller box, and the air groove is evenly arranged on the flow guide block beside the water outlet of the impeller box.

[0006] Compared with the related art, the application has the following advantages: after assembly, the plugging protrudes into the air groove to close the air groove to form a good closed space, thereby forming multiple breathing air bags, which can effectively ensure the air escape and improve the anti -freezing capacity of the movement: when the water in the water gauge watch case freezes, the air in the air groove shrinks when cold, can release space, avoid the burst of the water gauge caused by the volume expansion of the water in the watch case, and the air in the air groove restores to the original state after the water in the water gauge freezes, to cope with the next cold wave.

[0007] As preferred, the filter screen is provided with multiple rows of circumferentially distributed water filtering holes, and the water filtering holes are square table shapes and gradually reduce from the outer port to the inner port. The square table shape water filtering hole plays a very good rectification effect on the water flow, avoids generating turbulence and reduces the kinetic energy loss of the water flow, can bring greater driving force, and improves the measuring characteristics of the water gauge.

[0008] As preferred, the counter is filled with organic antifreeze. It is used to avoid the counter from being frozen and damaged.

[0009] As improved, the display board of the counter is slightly protruded from the upper clamping plate and attached under the glass plate. The display board of the counter is attached with the glass plate without gap, so that there is no fog between them, thus no reading difficulty is caused. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the perspective view of the utility model.

[0011] Figure 2 is the sectional view of the utility model.

[0012] Figure 3 is the explosion view (right view) of the utility model.

[0013] Figure 4 is the explosion view (left view) of the utility model.

[0014] Figure 5 is the perspective view of the impeller box of the utility model.

[0015] Figure 6 is the perspective view of the sealing ring of the utility model. DETAILED DESCRIPTION

[0016] Firstly, those skilled in the art should understand that the embodiments are only used for explaining the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to the needs in order to adapt to specific application occasions.

[0017] The embodiments of the present application are as follows Figures 1 to 4 As shown in the figure, it is a kind of water meter anti-freezing movement, including counting component 1, gear box 2, impeller assembly 3, impeller box assembly 4, sealing ring 5, filter net 6 and cushion 7, counting component 1 is installed in gear box 2, gear box 2, impeller box assembly 4, sealing ring 5 and filter net 6 are stacked in sequence, impeller assembly 3 is installed in the cavity of impeller box assembly 4 and the upper end is inserted into gear box 2 and is driven engagement with the transmission gear of counting component 1, organic antifreeze is filled in the counter of counting component 1, the organic antifreeze can work normally in-25 ℃ environment, the display board of the counter is slightly protruded from the upper clamping plate and the upper end surface of gear box and is attached under the glass plate (not shown in the figure), the upper clamping plate is made of PC material, and a support column is additionally provided at the position close to the center of the upper clamping plate to prevent deformation. Here, as shown in the figure, the flow guide block beside the water outlet of the impeller box box body of impeller box assembly 4 is provided with air groove 4.1, and the opening of air groove 4.1 faces downward, as shown in the figure, Figure 5 Figure 6 ​As shown, the upper end of the sealing ring 5 is provided with raised sealing protrusions 5.1, which are evenly distributed around the circumference. After assembly, they appear as follows: Figure 2 As shown, the sealing protrusion 5.1 protrudes into the air groove 4.1 to seal it, creating a well-sealed space and forming multiple air bladders. This effectively ensures air escape while improving the movement's freeze resistance. When the water inside the meter casing freezes, the air in the air groove 4.1 contracts upon cooling, releasing space and preventing the meter from bursting due to the expansion of the water inside the casing. After the water inside the meter thaws, the air in the air groove 4.1 returns to its original state, ready for the next cold snap.

[0018] In this embodiment, the bottom of the water filter screen 6 has a circular groove, and the EVA material pad 7 is tightly fitted onto the circular groove. Because the pad 7 has good resilience and toughness, it can fit tightly with the bottom of the meter case without leaving any gap, thus isolating the water flow. After the water flows into the meter case, it enters the impeller box through the filter holes of the water filter screen 6. The water flow between the water filter screen 6 and the bottom of the meter case can only make a circular motion around the annular guide surface at the bottom of the water filter screen 6. The water flow cannot pass through the bottom of the water filter screen 6, thus avoiding turbulence and making the water flow more stable, improving the stability of the water meter's metering performance.

[0019] Preferably, the filter screen 6 has multiple rows of circumferentially distributed filter holes, which are truncated square in shape and gradually decrease in size from the outer end to the inner end. The truncated square filter holes, which are larger on the outside and smaller on the inside, have a very good rectifying effect on the water flow, avoiding turbulence and reducing the kinetic energy loss of the water flow, thereby bringing greater driving force and improving the metering characteristics of the water meter.

[0020] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A water meter antifreeze mechanism, comprising an impeller box and a filter screen, characterized in that, Air grooves are provided on the guide blocks next to the outlet of the impeller box; it also includes a sealing ring set between the impeller box and the filter screen, and a sealing protrusion protruding into the air groove to seal the air groove at the upper end of the sealing ring.

2. The water meter antifreeze mechanism according to claim 1, characterized in that, The filter screen has multiple rows of circumferentially distributed filter holes, which are truncated square and gradually decrease in size from the outer port to the inner port.

3. The water meter antifreeze mechanism according to claim 1, characterized in that, Its counter is filled with organic antifreeze.

4. The water meter antifreeze mechanism according to claim 3, characterized in that, The display plate of the counter protrudes from the upper clamping plate and is attached to the bottom of the glass plate.

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