Hollow character wheel of sealed counter of liquid seal water meter

Abstract

The utility model relates to a hollow character wheel of a sealed counter of a liquid seal water meter, which is designed for solving the technical problems that the character wheel or the first character wheel of the existing similar product is easily influenced by internal liquid during rotation, so that the stability is poor, and the precision is easily influenced. The hollow character wheel of the sealed counter is characterized in that a first character wheel in the sealed counter and a ring opening on one side of each character wheel are respectively provided with two convex columns which are symmetrically arranged, a ring opening on the other side of each character wheel is respectively provided with tooth columns which are arranged at equal intervals, and transmission gears are respectively meshed with the tooth columns at the corresponding character wheels. Fan-shaped through holes which are arranged at equal intervals and are in mirror symmetry are formed in a plane between the shaft holes of the first character wheel and the character wheel and the ring opening, and furthermore, a small round hole is formed in at least one position between the fan-shaped through holes; a dial wheel of the sealing counter is meshed with a worm of the gear train, the dial wheel drives a first character wheel to rotate, the first character wheel rotates by a circle and then drives the connected character wheel to rotate by a numerical value, and in the same way, the following connected character wheels are driven to rotate to achieve counting.

Description

Technical Field

[0001] The utility model relates to a water meter, in particular to a liquid-sealed water meter with a sealed counter and a hollow character wheel. Background Art

[0002] A water meter is an instrument used to measure water flow, mostly for cumulative flow measurement. It is generally categorized as either a volumetric or velocity meter. Meter specifications typically prioritize the intended flow rate and flow range, then select the specification that most closely matches the commonly used flow rate. Some existing water meters have a counter with a dial that requires water to be filled and sealed before use. These meters are known as liquid-sealed water meters, where the dial or entire counter used for meter reading is sealed with a liquid such as glycerin at a certain concentration. This sealed, isolated counter maintains clarity unaffected by external water quality. For example, the utility model disclosed in Chinese patent application number 201420070155.8, published on July 2, 2014, is titled "A Vertical Piston-Type Liquid-Sealed Water Meter Counter." Although the above-mentioned product achieves counting through the interaction between the first magnet in the sealed character wheel window box and the second magnet on the dial wheel, the water hole of the character wheel or the first character wheel of the above-mentioned product and similar products is a small round hole. The character wheel or the first character wheel is easily affected by the internal liquid when rotating, resulting in poor stability and the accuracy is easily affected by the flow of liquid driven by the rotation of the character wheel. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide a hollowed-out character wheel for a sealed counter in a liquid-sealed water meter, thereby resolving the technical problem in existing similar products where the character wheels or first character wheels are easily affected by the internal liquid during rotation, resulting in poor stability and reduced accuracy. This objective is achieved through the following technical solution.

[0004] A liquid-sealed water meter sealed counter with a hollow character wheel has a gear train at its bottom. A character wheel window cover is provided at one side of an opening in the character wheel window box. A character wheel shaft within the character wheel window box is provided with a series of linked character wheels. The character wheel at one end of the character wheel shaft is the first character wheel. The other end of the character wheel shaft extends out of the character wheel window box and is provided with a sealing ring and a sealing cover. A dial wheel is provided at the end of the character wheel shaft. Transmission gears are provided on one side of the connection between the character wheels within the character wheel window box. The transmission gears are also provided on the transmission shaft within the character wheel window box. Liquid is contained within a sealed chamber integrally connected to the character wheel window cover and the character wheel window box. Key structural design features include two symmetrically arranged protrusions on one side of the first character wheel and the character wheel, and equally spaced tooth columns on the other side of the character wheel. The transmission gears mesh with the corresponding tooth columns on the corresponding character wheels. Sector-shaped through holes are provided in the plane between the shaft holes and the ring openings of the first character wheel and the character wheel, each arranged symmetrically and mirror-symmetrically. The first character wheel and the character wheel, and the character wheels and the character wheels are connected in series through convex columns and tooth columns. After the first character wheel rotates one circle, it drives the connected character wheel to rotate a value, and so on, it drives the subsequent connected character wheels to rotate to achieve counting.

[0005] At least one circular hole is provided between the first character wheel and the fan-shaped through hole of the character wheel.

[0006] The dial of the sealed counter meshes with the worm of the gear train, which drives the first letter wheel to rotate. The plug rod at the worm is connected to one end of the fork rod, and the other end of the fork rod is inserted into the metering chamber through the metering chamber cover. The metering chamber cover protrudes from the top of the watch case and is provided with a sealed counter. The counting chamber of the gear train is sealed and separated from the metering chamber of the metering assembly in the watch case. The sealed counter and gear train are arranged in the cover of the counting chamber. The joint between the cover and the watch case is sealed. The piston in the metering chamber channel of the metering chamber is connected to the end of the fork rod in the metering chamber via a shaft. As a result, liquid entering the watch case enters the channel of the metering chamber from the watch movement, then pushes the piston in the metering chamber to rotate, driving the fork rod to rotate. Finally, the fork rod, plug rod, and worm drive the lever to rotate in sequence, and the lever drives the first letter wheel to rotate, realizing flow counting.

[0007] A filter is installed at the outer diameter of the end of the water inlet hole at the bottom channel of the metering chamber. A check valve assembly is installed at the water inlet at the bottom center of the meter case below the filter. A water outlet hole is installed on the metering chamber cover inside the meter cover, communicating with the internal channel of the metering chamber. A water outlet is installed at the top center of the meter cover. The above is an embodiment of a specific water meter structure. The above structure and the sealed counter can also be used in other water meter structures. The check valve assembly prevents backflow of liquid entering through the water inlet hole at the bottom of the meter case below the filter.

[0008] The utility model has reasonable structural design, convenient production and assembly, good stability, high precision and wide application range; it is suitable for use as a sealing counter for liquid-sealed water meters and a structural improvement for similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the sealed counter of the utility model in use state.

[0010] Figure 2 yes Figure 1 Schematic diagram of the sealed counter structure.

[0011] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure.

[0012] Figure 4 yes Figure 3 Schematic diagram of the main structure.

[0013] Figure 5 yes Figure 3 A side view of the structure of the connection between the first character wheel and the character wheel shaft.

[0014] Figure 6 yes Figure 5 Schematic diagram of the left view structure.

[0015] Figure 7 yes Figure 5 Schematic diagram of the three-dimensional structure.

[0016] Figure 8 yes Figure 3 Schematic diagram of the side view structure of the character wheel.

[0017] Figure 9 yes Figure 8 Schematic diagram of the left view structure.

[0018] Figure 10 yes Figure 8 Schematic diagram of the right view structure.

[0019] Figure 11 It is a left-view structural schematic diagram of an existing character wheel.

[0020] Figure 12 yes Figure 1 Schematic diagram of a partial cross-sectional structure of an embodiment of the use state, in which the watch case is omitted.

[0021] Serial number and name of the accompanying drawings: 1. Sealed counter, 2. Gear train, 3. Character wheel window box, 4. Transmission gear, 5. Transmission shaft, 6. Sealing ring, 7. Sealing cover, 8. Dial wheel, 9. Character wheel, 10. First character wheel, 11. Character wheel shaft, 12. Character wheel window cover, 13. Small circular hole, 14. Fan-shaped through hole, 15. Boss, 16. Gear column, 17. Insert rod, 18. Fork rod, 19. Metering chamber cover, 20. Metering chamber, 21. Piston, 22. Case, 23. Watch cover, 24. Check valve assembly. Implementation Method

[0022] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figures 1-10 As shown, the sealed counter 1 with hollowed-out character wheels is provided with a gear train 2 at the bottom. A character wheel window box 3 of the sealed counter is provided with a character wheel window cover 12 at one side of the opening. A character wheel shaft 11 within the character wheel window box is provided with character wheels 9 connected in series and in a linked manner. The character wheel at one end of the shaft is a first character wheel 10. The other end of the shaft extends out of the character wheel window box and is provided with a sealing ring 6 and a sealing cover 7. A dial wheel 8 is provided at the end of the shaft. Transmission gears 4 are provided on one side of the character wheel connection within the character wheel window box. The transmission gears are also provided on a transmission shaft 5 within the character wheel window box. A sealed chamber integrally connected to the character wheel window cover and the character wheel window box contains liquid. Two symmetrically arranged bosses 15 are provided on one side of the ring of the first character wheel and the character wheel, respectively. Equally spaced tooth posts 16 are provided on the other side of the ring of the character wheel. The transmission gears mesh with the tooth posts of the corresponding character wheels. The first character wheel and the character wheel, and the character wheels, are connected in series via bosses and tooth posts. The plane between the axis hole and the ring opening of the first character wheel and the character wheel is provided with equidistant and mirror-symmetrical fan-shaped through holes 14. At the same time, at least one circular hole 13 is provided between the fan-shaped through holes of the first character wheel and the character wheel.

[0023] When the impeller of the above-mentioned existing similar water meter or the piston of the following water meter drives the dial wheel to rotate through the worm of the gear system, the dial wheel drives the first character wheel to rotate. After the first character wheel rotates one circle, it drives the connected character wheel to rotate by one value. And so on, it drives the subsequent connected character wheels to rotate to achieve counting. During the rotation of the above-mentioned corresponding components, the liquid filled in the character wheel window box is driven to flow and stir. Since the through holes at the character wheel and the first character wheel are enlarged into fan-shaped through holes, the influence of the liquid flow and stirring on the character wheel and the first character wheel is minimized. Figure 10 As shown, the existing character wheel or the first character wheel is provided with the circular hole at most at one place on the circular surface.

[0024] like Figure 12As shown, the dial of the sealed counter meshes with the worm of the gear train, which drives the first letter wheel to rotate. The insertion rod 17 at the worm is connected to one end of the fork rod 18, and the other end of the fork rod is inserted into the metering chamber 20 through the metering chamber cover 19. The metering chamber cover protrudes from the top of the watch case 22 and is provided with a sealed counter and a counting chamber of the gear train, which is sealed and separated from the metering chamber of the metering assembly in the watch case. The sealed counter and gear train are set in the cover 23 of the counting chamber. The connection between the cover and the watch case is sealed. The piston 21 in the metering chamber channel of the metering chamber is connected to the end of the fork rod in the metering chamber via a shaft. At the same time, the outer diameter of the end of the water inlet hole of the bottom channel of the metering chamber is provided with a filter screen. The water inlet at the bottom center of the watch case 22 below the filter screen is provided with a check valve assembly 24. The metering chamber cover inside the watch cover is provided with a water outlet hole that communicates with the channel in the metering chamber, and the water outlet is provided at the top center of the watch cover.

[0025] The above is the application of the sealed counter and its gear system in a direct current water meter. The first digit wheel and digit wheel structure of the sealed counter can also be applied to other liquid-sealed water meters.

[0026] The above content is intended to illustrate the technical means of the present invention and is not intended to limit the technical scope of the present invention. Those skilled in the art who, in combination with existing common knowledge, make obvious improvements or substitutions to the present invention also fall within the scope of protection of the claims of the present invention.

Claims

1. A liquid-sealed water meter sealed counter hollow character wheel, wherein the sealed counter (1) of the sealed counter hollow character wheel is provided with a gear train (2) at the bottom, a character wheel window box (3) of the sealed counter is provided with a character wheel window cover (12) at one side opening, a character wheel shaft (11) in the character wheel window box is provided with character wheels (9) connected in series and linked in sequence, a character wheel at the end of one end of the character wheel shaft is a first character wheel (10), the other end of the character wheel shaft extends out of the character wheel window box and is provided with a sealing ring (6) and a sealing cover (7), a dial wheel (8) is provided at the end of the character wheel shaft, a transmission gear (4) is provided on one side of the character wheel connection in the character wheel window box, the transmission gear is simultaneously provided on the transmission shaft (5) in the character wheel window box, and a liquid is provided in a sealed chamber in which the character wheel window cover and the character wheel window box are connected as one body; it is characterized in that One side opening of the first character wheel (10) and the character wheel (9) is respectively provided with two symmetrically arranged protrusions (15), and the other side opening of the character wheel is respectively provided with equidistantly arranged tooth columns (16), and the transmission gear (4) is respectively engaged with the tooth columns of the corresponding character wheel, and the plane between the shaft hole and the opening of the first character wheel and the character wheel is provided with equidistant and mirror-symmetrically arranged fan-shaped through holes (14).

2. The hollow character wheel of the sealed counter of the liquid-sealed water meter according to claim 1, characterized in that A circular small hole (13) is provided at least one location between the first character wheel (10) and the fan-shaped through hole (14) of the character wheel (9).

3. The hollow character wheel of the sealed counter of the liquid-sealed water meter according to claim 1, characterized in that The dial wheel (8) of the sealed counter (1) is meshed with the worm of the gear train (2), and the dial wheel drives the first letter wheel (10) to rotate. The insertion rod (17) at the worm is connected to one end of the fork rod (18), and the other end of the fork rod is inserted into the metering chamber (20) through the metering chamber cover (19). The metering chamber cover protrudes the top of the watch case (22) and is provided with a sealed counter, a counting chamber of the gear train, and a metering chamber of the metering assembly provided in the watch case. The sealed counter and the gear train are provided in the watch cover (23) of the counting chamber. The cover at the connection between the watch cover and the watch case is sealed. The piston (21) at the metering channel of the metering chamber is connected to the end of the fork rod in the metering chamber through the shaft.

4. The hollow character wheel of the sealed counter of the liquid-sealed water meter according to claim 3, characterized in that A filter is provided at the outer diameter of the end of the water inlet of the bottom channel of the metering chamber (20), a check valve assembly (24) is provided at the water inlet at the bottom center of the meter case (22) below the filter, a water outlet hole communicating with the inner channel of the metering chamber is provided at the metering chamber cover (19) in the meter cover (23), and a water outlet is provided at the top center of the meter cover.

Images