Water meter movement with adjusting device

Abstract

A water meter movement with an adjusting device comprises an impeller assembly, a first adjusting mechanism and a second adjusting mechanism. The impeller assembly comprises an impeller box and an impeller rotationally arranged in the impeller box. The impeller box is provided with a plurality of water inlets and a plurality of water outlets; the water meter movement further comprises a first adjusting mechanism in a low-flow area and a second adjusting mechanism in a high-flow area. The first adjusting mechanism comprises a first adjusting column and a first floating ball; when the first floating ball moves upwards, the first water inlet port and the first adjusting port can be blocked; the second adjusting mechanism comprises a second adjusting column and a second floating ball; the second floating ball is arranged in an inner cavity of the second adjusting column, and the second floating ball can block the second water inlet port in the state that the second floating ball is located at the bottom end. Compared with the prior art, the error of the water meter can be adjusted by controlling the flow of water flowing through the impeller.

Description

Technical Field

[0001] This utility model relates to the field of water meters, specifically to a water meter movement with an adjustment device. Background Technology

[0002] A water meter is an instrument that measures water flow. Its function is to measure the cumulative flow of water. It is usually installed in the pipeline system with an impeller and a scale composed of a corresponding impeller mechanism to provide feedback on water consumption.

[0003] Existing impeller-type water meters, such as the water meter mechanism disclosed in Chinese Patent Application No. 202121652762.1, include a gear box, an impeller box is snapped onto the lower end of the gear box, an impeller is provided inside the impeller box, and the impeller is connected to the metering mechanism through a transmission gear set; the side wall of the impeller box is provided with a water inlet hole and a water outlet hole.

[0004] However, as mentioned above, the metering mechanism of water meters needs to be molded from engineering plastics using an injection molding machine. The instability of the molding dimensions makes it one of the more significant instability factors in the flow performance of water meters. In other words, the flow measurement characteristics of water meters during the production process can currently only be determined by the design. Once assembled, water meters cannot be calibrated in stages to ensure that their measurement characteristics meet standard requirements. This leads to many water meters having errors exceeding the maximum permissible error range or being in a critical state.

[0005] The existing error adjustment structure has an adjustment hole at the bottom of the water meter impeller, allowing the tap water being measured to leak out from the bottom and not participate in the measurement of the water flow. The measurement error of the water meter is adjusted by opening or closing the adjustment hole at the bottom of the impeller box. However, installing the adjustment plate in the bottom hole of the impeller box will affect the service life of the impeller and even shorten the service life of the water meter. In addition, the opening and closing size of the adjustment hole is difficult to control, the accuracy is low, and the adjustment is very inconvenient. Furthermore, the water flow in the water meter is not constant, and the existing error adjustment structure needs to be readjusted when facing different water flow rates, which is very inconvenient. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a water meter movement with an adjustment device that can accurately measure water flow, reduce water meter error and facilitate adjustment, in light of the above-mentioned technical status.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a water meter movement with an adjustment device, including an impeller assembly;

[0008] The impeller assembly includes an impeller housing and an impeller rotatably disposed within the impeller housing; the impeller housing has multiple inlets and multiple outlets; characterized in that:

[0009] The water meter mechanism also includes a first regulating mechanism for the low flow range and a second regulating mechanism for the high flow range;

[0010] The first adjustment mechanism includes

[0011] A first adjusting column, hollow and rotatable, is mounted on the outer edge of the impeller box. The lower end of the first adjusting column forms a first water inlet port, and the upper end forms a first adjusting port. When the first adjusting column is rotated, the water flow rate through the first adjusting port can be adjusted.

[0012] The first float is located inside the cavity of the aforementioned first adjusting column. When the first float moves upward, it can block the first water inlet port and the first adjusting port.

[0013] The second adjustment mechanism includes

[0014] The second regulating column is hollow and rotatably mounted on the outer edge of the impeller box. The lower end of the second regulating column forms a second water inlet port, and the middle part forms a second regulating port. When the second regulating column is rotated, the water flow rate through the second regulating port can be adjusted.

[0015] The second float is located inside the cavity of the aforementioned second adjusting column. When the second float is at the bottom, it can block the second water inlet port.

[0016] Preferably, the first regulating column has a first blocking part, and the first blocking part has a first through hole in the middle for water flow. The first regulating port is located above the first blocking part. After the first float rises, it contacts the first blocking part and closes the first through hole, thereby blocking the first water inlet port and the first regulating port. When the water flow is large, the first float rises and contacts the first blocking part and closes the first through hole. At this time, no water flows through the first regulating column, and the metering of the large water flow can be precisely fine-tuned through the second regulating column to reduce interference.

[0017] Preferably, the first adjusting column has a plurality of guide ribs disposed on the inner circumferential wall and spaced apart from each other. Water can flow into the first inner cavity through the gaps between the guide ribs. The arrangement of the guide ribs facilitates the placement of the first float on the central axis of the first inner cavity.

[0018] To reduce interference with metering when the water flow rate is low, preferably, the second regulating column has a second blocking part, and the second regulating port is lower than the second blocking part; the impeller box has a second connection port communicating with the second water inlet port; when the second float is at the bottom, it can block the second connection port, thereby blocking the second water inlet port; after floating up, it contacts the second blocking part, connecting the second water inlet port and the second connection port. When the water flow rate is low, the second float cannot float up, that is, when the second float is at the bottom, it blocks the second connection port. Therefore, at this time, no water flows through the second regulating column, and the metering of the low-flow water can be precisely fine-tuned through the first regulating column, reducing interference.

[0019] To relieve pressure within the cavity of the second regulating column and allow the second float to rise under the influence of water flow, preferably, the top of the peripheral wall of the second regulating column is provided with a pressure relief hole communicating with the cavity of the second regulating column. Preferably, the pressure relief hole and the cavity of the second regulating column are connected by a gap.

[0020] Preferably, the impeller box includes an upper box body and a lower box body located below the upper box body; a plurality of water inlets are located on the lower box body, and a plurality of water outlets are located on the upper box body.

[0021] Preferably, both the first adjusting post and the second adjusting post are located on the outer periphery of the upper box body.

[0022] Preferably, a connecting part is provided at the connection between the upper box and the lower box. The connecting part has a first connecting port communicating with the first water inlet port and a second connecting port communicating with the second water inlet port, so that water can flow into the first water inlet port and the second water inlet port.

[0023] Preferably, the lower box body has an inwardly recessed perimeter forming a first water inlet channel and a second water inlet channel, the first water inlet channel being connected to a first connection port, and the second water inlet channel being connected to a second connection port.

[0024] To prevent impurities from clogging the water inlet or affecting the impeller, thereby reducing the service life of the water meter, preferably, the water meter movement further includes:

[0025] A filter screen is located on the outer periphery of the water inlet and is used to filter the water flowing into the water inlet.

[0026] Compared with the prior art, the advantages of this utility model are as follows: By setting a first adjustment mechanism and a second adjustment mechanism on the outer side of the impeller box to adjust the water flow through the impeller, the error of the water meter can be easily adjusted, avoiding the impact on the life of the water meter, and the water flow accuracy is more accurate. At the same time, the impeller is more stable. The first adjustment mechanism and the second adjustment mechanism have a first float and a second float respectively. When the water flow is small, the first float and the second float are located at the bottom, the first water inlet port and the first adjustment port are connected, and the second float blocks the second water inlet port. When the water flow is large, the first float and the second float are in the floating state, the first water inlet port and the first adjustment port are blocked, and the second water inlet port and the second adjustment port are connected, so as to realize the flow adjustment of different water flow zones: the first adjustment mechanism adjusts the low flow zone, and the second adjustment mechanism adjusts the high flow zone. The water flow through the impeller can be easily adjusted when the water flow of the water meter changes, reducing the metering error. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0028] Figure 2 This is a cross-sectional view of an embodiment;

[0029] Figure 3 This is a cross-sectional view of the first and second floats when they rise to the surface, as shown in the embodiment.

[0030] Figure 4 This is an exploded view of an embodiment. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1-4 The diagram shows a preferred embodiment of the present invention. The water meter mechanism with an adjustment device includes a gearbox 1, a filter screen 2, an impeller assembly 3, a first adjustment mechanism 4, and a second adjustment mechanism 5.

[0033] The impeller assembly 3 is located at the bottom of the gear box 1.

[0034] The first regulating mechanism 4 and the second regulating mechanism 5 are both located on the outer periphery of the impeller box 31, and are spaced apart from each other. The first regulating mechanism 4 is used to regulate the water flow rate in the low flow rate zone, and the second regulating mechanism 5 is used to regulate the water flow rate in the high flow rate zone. The low flow rate zone and the high flow rate zone are relative concepts. The instantaneous flow rate of the water in the high flow rate zone is higher than that in the low flow rate zone. The instantaneous flow rate of the water in the high flow rate zone is faster, which can generate a large pressure difference between the upper and lower ends of the first float 42 and the second float 52. This generates a large upward force, which, under the combined action of buoyancy, overcomes the weight of the first float 42 and the second float 52, causing them to float upward.

[0035] The first adjusting mechanism 4 includes a first adjusting column 41 and a first float 42. The first adjusting column 41 is hollow and rotatably mounted on the outer edge of the impeller box. The lower end of the first adjusting column 41 forms a first water inlet port 411, and the upper end forms a first adjusting port 412. When the first adjusting column 41 is rotated, the first adjusting port 412 can be either open or at least partially closed by contacting the peripheral wall of the impeller box 31, thereby adjusting the water flow rate from the first adjusting port 412. The first float 42 is located inside the cavity of the first adjusting column 41. When the first float 42 moves upwards… The system can block the first water inlet port 411 and the first regulating port 412. The first regulating column 41 has a first blocking part 413 inside, with a first through hole 414 in the middle for water flow. The first regulating port 412 is located above the first blocking part 413. After the first float 42 floats up, it contacts the first blocking part 413 and seals the first through hole 414, thus blocking the first water inlet port 411 and the first regulating port 412. The first regulating column 41 has multiple guide ribs 415 arranged at intervals on its inner circumferential wall. The guide ribs 415 extend along the length of the first regulating column 41, allowing water to flow into the first regulating column through the gaps between the guide ribs 415.

[0036] The second adjustment mechanism 5 includes a second adjustment column 51 and a second float 52. The second adjustment column 51 is hollow and rotatably disposed on the outer edge of the impeller box 31. The lower end of the second adjustment column 51 forms a second water inlet port 511, and the middle part forms a second adjustment port 512. When the second adjustment column 51 is rotated, the second adjustment port 512 can be in an open state or at least partially closed by contacting the peripheral wall of the impeller box 31, thereby adjusting the water output of the second adjustment port 512. The second float 52 is disposed in the inner cavity of the second adjustment column 51. When the second float is located at the bottom, it can block the second water inlet port 511. The second adjusting column 51 has a second blocking part 513 inside, and the second adjusting port 512 is lower than the second blocking part 513; the impeller box has a second connection port 315 communicating with the second water inlet port 511; when the second float ball 52 is at the bottom, it can block the second connection port 315, thereby blocking the second water inlet port 511; after floating up, it contacts the second blocking part 513, so that the second connection port 315, the second water inlet port 511 and the second adjusting port 512 are connected. The top of the peripheral wall of the second adjusting column 51 has a pressure relief hole 514 communicating with the inner cavity of the second adjusting column.

[0037] The impeller assembly 3 includes an impeller housing 31 and an impeller 32 rotatably disposed within the impeller housing 31; the impeller housing 31 has multiple inlets 33 and multiple outlets 34. The impeller housing 31 includes an upper housing 311 and a lower housing 312 disposed below the upper housing 311; multiple inlets 33 are disposed on the lower housing 312, and multiple outlets 34 are disposed on the upper housing 311. A first adjusting column 41 and a second adjusting column 51 are both disposed on the outer edge of the upper housing 311. A connecting portion 313 is provided at the connection between the upper housing 311 and the lower housing 312, the connecting portion 313 having a first connecting port 314 communicating with the first inlet port 411, and a second connecting port 315 communicating with the second inlet port 511, so that water can flow into the first inlet port 411 and the second inlet port 511. The connecting part 313 also has a blocking post disposed in the first connecting port 314. When the first float 42 is at the bottom, it is blocked by the blocking post, so that no matter how it floats up and down, it cannot block the first connecting port 314. The peripheral wall of the lower box 312 is recessed inward to form a first water inlet channel 316 and a second water inlet channel 317. The first water inlet channel 316 communicates with the first connecting port 314, and the second water inlet channel 317 communicates with the second connecting port 315.

[0038] The filter screen 2 is located on the outer periphery of the lower box 312 of the impeller box 31 and is used to filter the water flowing into the inlet 33.

[0039] The workflow of this embodiment is as follows:

[0040] When water flows into the water meter, some of the water is filtered by the filter screen 2 and then enters the impeller box 31 through the inlet 33, and flows out through the outlet 34 after passing through the impeller 32. The water flow drives the impeller 32 to rotate, thereby causing the gear set in the gear box 1 to rotate, thus realizing the counting of the water meter.

[0041] like Figure 2 As shown, when the water flow rate is small, the first float 42 and the second float 52 cannot float due to the small water flow rate. The first inlet port 411 and the first regulating port 412 are connected, and the second float 52 blocks the second connection port 315, thereby blocking the second inlet port 511. A small portion of the water flows upward through the first inlet channel 316, the first connection port 314, and the first inlet port 411 into the first regulating column 41, and is discharged through the first regulating port 412.

[0042] like Figure 3 As shown, when the water flow rate is large, the flow velocity is fast. Under the action of pressure difference, the first float 42 and the second float 52 float upward. The first float 42 floats up until it contacts the first blocking part 413 and closes the first through hole 414, thus blocking the first water inlet port 411 and the first regulating port 412. After the second float 52 floats up, the second connection port 315 connects with the second water inlet port 511 and the second regulating port 512. A small portion of the water flows upward through the second water inlet channel 317, the second connection port 315, and the second water inlet port 511 into the second regulating column 51, and is discharged through the second regulating port 512.

[0043] The water flow discharged through the first regulating mechanism 4 and the second regulating mechanism 5 does not participate in the water meter's measurement. The water flow rate discharged from the first regulating port 412 and the second regulating port 512 can be changed by rotating the first regulating column 41 and / or the second regulating column 51. This allows for fine adjustment of the water flow rate (water pressure) flowing to the impeller 32, and calibrates the water meter's error in the low flow rate area and the high flow rate area, respectively.

Claims

1. A water meter movement with regulating device, comprising a vane wheel assembly (3); The vane wheel assembly (3) comprises a vane wheel box (31) and a vane wheel (32) rotatably arranged in the vane wheel box (31); The vane wheel box (31) has a plurality of water inlet ports (33) and a plurality of water outlet ports (34); Characterized in that: The water meter movement further comprises a first regulating mechanism (4) for low flow area and a second regulating mechanism (5) for high flow area; The first regulating mechanism (4) comprises A first regulating column (41) is hollow and rotatably arranged on the outer edge of the vane wheel box, the lower end of the first regulating column (41) forms a first water inlet port (411), and the upper end forms a first regulating port (412), and the first regulating column (41) can adjust the size of the water outlet of the first regulating port (412) in the rotating state; And A first floating ball (42) is arranged in the inner cavity of the first regulating column (41), and the first floating ball (42) can block the first water inlet port (411) and the first regulating port (412) in the upward moving state; The second regulating mechanism (5) comprises A second regulating column (51) is hollow and rotatably arranged on the outer edge of the vane wheel box (31), the lower end of the second regulating column (51) forms a second water inlet port (511), and the middle part forms a second regulating port (512), and the second regulating column (51) can adjust the size of the water outlet of the second regulating port (512) in the rotating state; And A second floating ball (52) is arranged in the inner cavity of the second regulating column (51), and the second floating ball is located at the bottom end in the state, which can block the second water inlet port (511).

2. Water meter movement with regulating device according to claim 1, characterized in that The first regulating column (41) is provided with a first blocking part (413), the first blocking part (413) is provided with a first through hole (414) for water flow, the first regulating port (412) is located above the first blocking part (413), and the first floating ball (42) is in contact with the first blocking part (413) after floating up and closes the first through hole (414), so that the first water inlet port (411) and the first regulating port (412) are blocked.

3. The water meter movement with regulating device according to claim 1, characterized in that: The first regulating column (41) has a plurality of guide ribs (415) arranged on the inner periphery and spaced from each other.

4. The meter movement with regulating device according to claim 1, characterized in that: The second regulating column (51) is provided with a second blocking part (513), and the second regulating port (512) is lower than the second blocking part (513); The vane wheel box has a second connecting port (315) communicated with the second water inlet port (511); The second floating ball (52) is located at the bottom end in the state, and the second floating ball (52) blocks the second connecting port (315), so as to block the second water inlet port (511); After floating up, the second floating ball (52) is in contact with the second blocking part (513) to make the second connecting port (315) and the second water inlet port (511) communicate.

5. A meter movement with regulating device according to claim 4, characterized in that: The top of the second regulating column (51) is provided with a pressure relief hole (514) communicated with the inner cavity of the second regulating column (51).

6. The meter movement with regulating device according to claim 1, characterized in that: The impeller box (31) comprises an upper box body (311) and a lower box body (312) arranged below the upper box body (311); a plurality of water inlets (33) are arranged on the lower box body (312), and a plurality of water outlets (34) are arranged on the upper box body (311).

7. A meter movement with regulating device according to claim 6, characterized in that: The first adjusting column (41) and the second adjusting column (51) are arranged on the outer periphery of the upper box body (311).

8. A water meter movement with regulating device according to claim 7, characterized in that: A connecting portion (313) is arranged at the connecting position of the upper box body (311) and the lower box body (312), the connecting portion (313) is provided with a first connecting port (314) in communication with the first water inlet port (411) and a second connecting port (315) in communication with the second water inlet port (511), so that water flow can flow into the first water inlet port (411) and the second water inlet port (511).

9. A water meter movement with regulating device according to claim 8, characterized in that: The periphery of the lower box body (312) is inwardly recessed to form a first water inlet channel (316) and a second water inlet channel (317), the first water inlet channel (316) is in communication with the first connecting port (314), and the second water inlet channel (317) is in communication with the second connecting port (315).

10. The water meter movement with adjusting device according to claim 1, characterized in that: The water meter movement further comprises: A filter screen (2) is arranged on the outer periphery of the water inlet (33) and is used for filtering water flow entering the water inlet (33).

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