Water meter simulation counting device

Abstract

The utility model discloses a water meter simulation counting device which comprises a water meter shell, an impeller is arranged in the water meter shell, a cover body is detachably installed outside the water meter shell, a containing opening is formed in the cover body, an encoder is fixedly installed in the containing opening, and a motor is fixedly installed at the outer end of the cover body. An output shaft of the motor is connected with an input shaft of the encoder through a coupler, an output shaft of the encoder penetrates through the through hole to be fixedly connected with the impeller, a plurality of limiting ribs are evenly and fixedly installed on the outer surface of the water meter shell around the periphery of the through hole, and limiting notches are formed in the positions, close to the limiting ribs, of the edge of the cover body. The device is simple in structure and convenient to install, the motor on the cover body drives the water meter impeller to rotate, counting of a traditional water meter can be stably and reliably simulated, the rotating speed and the number of turns of the motor are monitored in real time through the encoder in the counting process, and therefore the number of turns and the rotating speed of the impeller are synchronously obtained. And then the counting precision of the water meter can be judged according to the value on the water meter counter.

Description

Technical Field

[0001] The utility model relates to the technical field of water meter testing equipment, and more specifically, particularly to a water meter simulation counting device. Background Art

[0002] During the teaching and training process, water meter simulation counting can provide a risk-free, low-cost learning environment. By simulating the counting operation of the water meter, students can become familiar with the working principle and reading method of the water meter. Simulation counting helps students to have a deeper understanding of how the water meter counts through the change of water flow, as well as the differences in counting between water meters of different models and specifications.

[0003] Currently, water meter counting is usually simulated by an external water pipe or an external fan. The wind or water flow drives the impeller inside the water meter to rotate. When the impeller rotates, the value of the water meter counter will change.

[0004] However, the above simulation device is complicated to install and has low operating efficiency. At the same time, the wind force and water flow speed are not stable enough to effectively guarantee the stability of the water meter count during the simulation process. Utility Model Content

[0005] The utility model aims to provide a water meter simulation counting device.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a water meter simulation counting device, comprising a water meter housing, an impeller is arranged in the water meter housing, a cover body is detachably installed on the outside of the water meter housing, a receiving port is opened inside the cover body, an encoder is fixedly installed in the receiving port, a motor is fixedly installed on the outer end of the cover body, the output shaft of the motor is inserted in the receiving port, and the output shaft of the motor is connected to the input shaft of the encoder through a coupling, a through hole is opened on the outer surface of the water meter housing at the impeller position, the output shaft of the encoder passes through the through hole and is fixedly connected to the impeller, a plurality of limiting ribs are evenly and fixedly installed on the outer surface of the water meter housing around the periphery of the through hole, and limiting notches are opened on the edge of the cover body near the limiting ribs, and the limiting notches are engaged with the limiting ribs at the corresponding positions.

[0007] Preferably, a channel penetrating through both ends is provided inside the limiting rib, a threaded hole is provided on the inner side wall of the limiting notch, and the limiting rib is connected to the threaded hole by inserting a screw in the channel.

[0008] Preferably, a mechanical seal is fixedly installed in the accommodating port, the mechanical seal is close to the through hole, and the mechanical seal is sleeved on the output shaft surface of the encoder.

[0009] Preferably, the encoder is an extended-range encoder.

[0010] Preferably, the motor is a brushed DC motor.

[0011] Preferably, a switch for controlling the speed of the motor is installed outside the water meter housing.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] The utility model has a simple structure and is easy to install. By installing a cover body on the water meter housing, the water meter impeller is driven to rotate by the motor on the cover body, so as to stably and reliably simulate the counting of traditional water meters. During the counting process, the speed and number of revolutions of the motor are monitored in real time by the encoder, so the number of revolutions and the speed of the impeller are synchronously obtained, and then the accuracy of the water meter counting can be judged according to the value on the water meter counter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a structural diagram of a water meter simulation counting device of the utility model;

[0016] Figure 2 It is an exploded diagram of a water meter simulation counting device of the utility model;

[0017] Figure 3 It is a sectional view of a water meter simulation counting device of the utility model.

[0018] In the figure: 1 water meter housing, 11 impeller, 12 through hole, 2 cover, 21 receiving opening, 22 limiting notch, 23 threaded hole, 3 motor, 4 limiting ribs, 41 channel, 5 mechanical seal, 6 encoder. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] See also Figure 1 , Figure 2 and Figure 3As shown, the utility model provides a water meter simulation counting device, including a water meter housing 1, an impeller 11 is arranged in the water meter housing 1, a cover body 2 is detachably installed on the outside of the water meter housing 1, a receiving port 21 is opened inside the cover body 2, an encoder 6 is fixedly installed in the receiving port 21, a motor 3 is fixedly installed on the outer end of the cover body 2, the output shaft of the motor 3 is inserted in the receiving port 21, and the output shaft of the motor 3 is connected to the input shaft of the encoder 6 through a coupling, a through hole 12 is opened on the outer surface of the water meter housing 1 at the position of the impeller 11, the output shaft of the encoder 6 passes through the through hole 12 and is fixedly connected to the impeller 11, a plurality of limiting ribs 4 are evenly and fixedly installed on the outer surface of the water meter housing 1 around the periphery of the through hole 12, and limiting notches 22 are opened at the edge of the cover body 2 near the limiting ribs 4, the limiting notches 22 are engaged with the limiting ribs 4 at the corresponding position, play a positioning role, and at the same time can increase the stability of the connection between the cover body 2 and the water meter housing 1.

[0021] Furthermore, in order to improve the stability of the connection between the cover body 2 and the water meter housing 1, in this embodiment, a channel 41 running through both ends is opened inside the limiting rib 4, and a threaded hole 23 is opened on the inner wall of the limiting notch 22. The limiting rib 4 is connected to the threaded hole 23 by inserting a screw in the channel 41. Since the limiting rib 4 can prevent the cover body 2 from rotating, the influence on the screw is very small, thereby increasing the stability between the cover body 2 and the water meter housing 1.

[0022] Furthermore, to ensure sealing, in this embodiment, a mechanical seal 5 is fixedly installed in the accommodating opening 21 , the mechanical seal 5 is close to the through hole 12 , and the mechanical seal 5 is sleeved on the output shaft surface of the encoder 6 .

[0023] In this embodiment, the encoder 6 is an incremental encoder. Incremental encoders are widely used in various occasions where parameters such as displacement, angle, and speed need to be measured. They are suitable for detecting the rotation speed and number of revolutions of the motor 3 .

[0024] In this embodiment, the DC brushed motor of the motor 3 starts quickly and brakes promptly, has good starting and braking performances, and can respond quickly to control signals.

[0025] In this embodiment, a switch for controlling the rotation speed of the motor 3 is installed outside the water meter housing 1 .

[0026] The specific operation steps are as follows: the impeller 11 is driven to rotate by the motor 3. The rotational movement of the impeller 11 can change the numbers of the water meter counter, thereby realizing the analog counting of the water meter. At the same time, during the rotation of the motor 3, the encoder 6 can monitor the speed and number of revolutions of the motor 3 in real time, thereby obtaining the number of revolutions and speed of the impeller 11, which is convenient for the staff to judge the accuracy of the water meter counting.

[0027] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various variations or modifications within the scope of the appended claims. As long as they do not exceed the protection scope described in the claims of the present invention, they should be within the protection scope of the present invention.

Claims

1. A water meter simulation counting device, comprising a water meter housing, wherein an impeller is arranged in the water meter housing, wherein: A cover is detachably installed on the outside of the water meter housing, a receiving opening is provided inside the cover, an encoder is fixedly installed in the receiving opening, a motor is fixedly installed on the outer end of the cover, the output shaft of the motor is inserted in the receiving opening, and the output shaft of the motor is connected to the input shaft of the encoder through a coupling, a through hole is provided on the outer surface of the water meter housing at the impeller position, the output shaft of the encoder passes through the through hole and is fixedly connected to the impeller, a plurality of limiting ribs are evenly and fixedly installed on the outer surface of the water meter housing around the periphery of the through hole, and limiting notches are provided on the edge of the cover near the limiting ribs, and the limiting notches are engaged with the limiting ribs at the corresponding positions.

2. A water meter simulation counting device according to claim 1, characterized in that: A passage penetrating through both ends is provided inside the limiting rib, a threaded hole is provided on the inner side wall of the limiting notch, and the limiting rib is connected with the threaded hole by inserting a screw in the passage.

3. A water meter simulation counting device according to claim 1, characterized in that: A mechanical seal is fixedly installed in the accommodating port, the mechanical seal is close to the through hole, and the mechanical seal is sleeved on the output shaft surface of the encoder.

4. A water meter simulation counting device according to claim 1, characterized in that: The encoder is an extended-range encoder.

5. A water meter simulation counting device according to claim 1, characterized in that: The motor is a brushed DC motor.

6. A water meter simulation counting device according to claim 1, characterized in that: A switch for controlling the motor speed is installed outside the water meter housing.

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