Device for detecting silt resistance of water inlet valve of cleaning machine

Abstract

The utility model relates to a cleaning machine water inlet valve anti-sediment performance detection device comprising a water tank which is connected with a booster water pump. The water inlet pipe is connected with the water tank based on the booster water pump; the water return pipe is connected with the water tank; the cleaning machine water inlet valve is connected between the water inlet pipe and the water return pipe; the sediment proportioning tank is connected with the water tank through a first connecting pipe; the pneumatic ball valve is arranged on the water inlet pipe; the pressure sensor is arranged on the water inlet pipe and located on the downstream of the pneumatic ball valve. The device for detecting the silt resistance of the water inlet valve of the cleaning machine can simulate a water inlet environment of fine particles in water, so that the silt resistance of the water inlet valve of the cleaning machine is detected through an aging test of circulating silt flowing water of the water inlet valve of the cleaning machine.

Description

Technical Field

[0001] This utility model relates to a device for testing the anti-mud and sand resistance performance of the water inlet valve of a cleaning machine. Background Technology

[0002] The water inlet valve is an essential component in various types of cleaning machines, such as dishwashers and fruit and vegetable washers. It controls the flow of tap water into the machine. In homes, water valves and inlet pipes connect to the machine's inlet valve. Because these valves are often open, the inlet valve is constantly in contact with water. Fine particles in the water can clog the valve's openings, causing leaks and even flooding. Currently, the industry lacks equipment to test the anti-clogging performance of the inlet valve, making it impossible to control this issue during production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for testing the anti-sand performance of a cleaning machine inlet valve that can simulate the water inlet environment of fine particles in water and then test its anti-sand ability by circulating mud and sand water through the inlet valve of the cleaning machine during aging tests.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problem is: a device for testing the anti-mud and sand performance of a cleaning machine inlet valve, characterized in that: it includes...

[0005] A water tank, on which a booster pump is connected;

[0006] The water inlet pipe is connected to the water tank via a booster pump.

[0007] The return water pipe connects to the water tank;

[0008] The cleaning machine's inlet valve is connected between the inlet pipe and the return pipe;

[0009] The sediment mixing tank is connected to the water tank via the first connecting pipe;

[0010] A pneumatic ball valve is installed on the water inlet pipe;

[0011] The pressure sensor is installed on the inlet pipe and located downstream of the pneumatic ball valve.

[0012] In order to better control the on / off operation of the water supply end, the outlet end of the water inlet pipe is provided with a water supply valve body, and the water inlet end of the cleaning machine water inlet valve is connected to the water supply valve body through a second connecting pipe.

[0013] To better control the on / off operation of the return water end, the inlet end of the return water pipe is equipped with a return water valve body, and the return water end of the cleaning machine inlet valve is connected to the return water valve body through a third connecting pipe.

[0014] To ensure that the muddy water entering the inlet pipe is more evenly distributed, the water tank is equipped with a stirrer for agitating the liquid inside.

[0015] Simply put, the sediment mixing tank is designed to open upwards, and a water valve connected to a water source is located above the sediment mixing tank.

[0016] In order to control the water inlet flow rate and better simulate the flow rate when the cleaning machine is in use, a water flow sensor is installed on the water inlet pipe to detect the water inlet flow rate.

[0017] As an improvement, a water level sensor is installed inside the water tank.

[0018] To improve the flexibility of the test, a turbidity sensor is installed inside the water tank.

[0019] In order to test multiple cleaning machine inlet valves at the same time, the inlet pipe and return pipe are matched in multiple sets, and each set of inlet pipe and return pipe is matched and connected to a cleaning machine inlet valve.

[0020] The water tank is connected to an inlet main pipe and a return main pipe, with each inlet pipe connected to the inlet main pipe and each return pipe connected to the return main pipe;

[0021] The booster pump is installed on the main water inlet pipe.

[0022] Preferably, the system also includes a frame, on which the water tank, booster pump, inlet pipe, return pipe, and cleaning machine inlet valve are all mounted.

[0023] Compared with the prior art, the advantages of this utility model are as follows: The anti-mud and sand performance testing device for the water inlet valve of the cleaning machine in this utility model actively configures mud and sand water, which is introduced into the water inlet valve of the cleaning machine through some pipeline design, and cooperates with pneumatic ball valve and pressure sensor to realize the leakage detection of the water inlet valve of the cleaning machine. In this way, the aging test of the water inlet valve of the cleaning machine is realized, thereby characterizing the anti-mud and sand resistance and anti-clogging performance of the water inlet valve of the cleaning machine, which is conducive to effectively realizing quality control of the water inlet valve of the cleaning machine during the production stage. Attached Figure Description

[0024] Figure 1 This is a perspective view of the anti-mud and sand performance testing device for the water inlet valve of the cleaning machine in this embodiment of the present invention.

[0025] Figure 2 This is an internal structural diagram of the anti-mud and sand performance testing device for the water inlet valve of the cleaning machine in this embodiment of the present invention.

[0026] Figure 3 for Figure 2 Rear view diagram.

[0027] Figure 4 for Figure 2 Side view diagram. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 4 As shown, the anti-mud and sand performance testing device for the water inlet valve of the cleaning machine in this embodiment includes a frame 100 and a water tank 1, a booster water pump 2, a water inlet pipe 3, a water return pipe 4, and a water inlet valve of the cleaning machine installed on the frame 100.

[0030] To facilitate the installation of these devices on the rack 100 and ensure safe use during testing, the rack 100 includes a housing with chambers and a frame structure housed within the housing, allowing for convenient installation of the devices within the housing. To facilitate installation and other operations during the experiment, the front wall of the housing can be configured as an openable door structure.

[0031] In addition, to facilitate the overall movement of the rack 100, multiple casters can be installed at the bottom of the rack 100, and retractable support legs can be installed at the bottom of the rack 100. When it needs to be moved, the support legs can be raised, and then the casters can be used for movement, making the movement more convenient. When the rack 100 needs to be fixed, the support legs can be lowered and supported on the ground, so that the casters are in an elevated state.

[0032] Water tank 1 is located at the bottom of the machine casing, and a booster pump 2 is connected to water tank 1 to pump water outwards. Water inlet pipe 3 is connected to water tank 1 via booster pump 2. Specifically, water inlet pipe 3 is connected to booster pump 2, thus connecting the water pipe to water tank 1. Water in water tank 1 can then enter water inlet pipe 3 due to the pumping action of booster pump 2. Water return pipe 4 is connected to water tank 1. A cleaning machine inlet valve 5 is connected between water inlet pipe 3 and water return pipe 4. During use, water in water inlet pipe 3 passes through cleaning machine inlet valve 5 and then through water return pipe 4 into water tank 1. This allows the water in water tank 1 to circulate through cleaning machine inlet valve 5, thereby enabling aging tests on cleaning machine inlet valve 5.

[0033] The mud-sand mixing tank 6 is connected to the water tank 1 via the first connecting pipe 61. This mud-sand mixing tank 6 is mainly used to prepare mud-sand water, thereby simulating the mud-sand water application environment of the cleaning machine inlet valve 5 in the cleaning machine. Based on this mud-sand water application environment, an aging test is performed on the cleaning machine inlet valve 5 to characterize its mud-sand resistance and anti-clogging performance. In this embodiment, based on the mud-sand water flowing through the cleaning machine inlet valve 5, the service life, mud-sand resistance, and anti-clogging performance of the cleaning machine inlet valve 5 are tested according to its leakage condition. To effectively detect leakage of the cleaning machine inlet valve 5, the mud-sand resistance testing device also includes a pneumatic ball valve 7 and a pressure sensor 8.

[0034] A pneumatic ball valve 7 is installed on the water inlet pipe 3, and a pressure sensor 8 is installed on the water inlet pipe 3 downstream of the pneumatic ball valve 7. When it is necessary to detect leakage in the cleaning machine's water inlet valve 5, the cleaning machine's water inlet valve 5 is closed, and the pneumatic ball valve 7 also closes automatically. At this time, the pressure sensor 8 detects the water pressure in the water line between the pneumatic ball valve 7 and the cleaning machine's water inlet valve 5. If the water pressure is between the normal lower limit and the pressure value under leakage conditions of the cleaning machine's water inlet valve 5, it is determined that the cleaning machine's water inlet valve 5 is leaking. Based on this, the service life of the cleaning machine's water inlet valve 5 is obtained. The service life is used to characterize its resistance to silt and sand and its anti-clogging performance. The longer the service life, the stronger its resistance to silt and sand and its anti-clogging performance.

[0035] However, during testing, to shorten the testing time, the concentration of the prepared muddy water must be higher than the particulate matter concentration in the water circuit during normal operation of the cleaning machine, thereby accelerating the acquisition of test results. Based on this requirement, to control the concentration of the muddy water, in this embodiment, a turbidity sensor 13 is also installed in the water tank 1. The concentration of the prepared muddy water is characterized by the turbidity information detected by the turbidity sensor 13. The higher the turbidity value detected by the turbidity sensor 13, the higher the concentration of the prepared muddy water, and the shorter the required testing time. To obtain more accurate test results, muddy water with different turbidities can be used to test the inlet valve 5 of the cleaning machine.

[0036] In addition, to facilitate the preparation of sediment-water solutions of different concentrations, the sediment mixing tank 6 is designed with an upward opening, and a water inlet valve 62 connected to a water source is located above the sediment mixing tank 6. When preparing sediment-water solutions, sediment is placed in the sediment mixing tank 6, and the water inlet valve 62 is opened to allow water to enter the sediment mixing tank 6. With the impact of the water flow, the sediment flows with the water through the first connecting pipe 61 into the water tank 1. The water tank 1 is also equipped with a water level sensor. When the water level sensor detects that the water level in the water tank 1 has reached the set water level, it controls the water inlet valve 62 to close, thereby stopping the water inlet. Under the action of the booster pump 2, the water in the water tank 1 can circulate through the inlet pipe 3 and the return pipe 4 for continuous testing.

[0037] In addition, after the test is completed, the mud and sand water in the water tank 1 is drained, and the water inlet valve 62 is opened to introduce water into the mud and sand mixing tank 6. The water flow washes the mud and sand mixing tank 6 and the first connecting pipe 61, and then enters the water tank 1 and washes the water tank 1. At the same time, the inlet pipe 3 and the return pipe 4 are connected. Under the action of the booster water pump 2, the inlet pipe 3, the return pipe 4 and the cleaning machine inlet valve 5 can also be washed at the same time, so as to realize the flushing of the entire water circuit in the mud and sand resistance performance testing device of the cleaning machine inlet valve and avoid the impact on the next test.

[0038] To better control the on / off operation of the water supply, a water supply valve body 31 is provided at the outlet end of the water inlet pipe 3. The water inlet end of the cleaning machine's water inlet valve 5 is connected to the water supply valve body 31 through a second connecting pipe 51. When it is necessary for the water inlet pipe 3 to be connected to the cleaning machine's water inlet valve, the water supply valve body 31 is opened; when it is necessary to close the connection between the water inlet pipe 3 and the water inlet valve, the water supply valve body 31 is closed.

[0039] To better control the on / off operation of the return water end, a return water valve body 41 is provided at the inlet end of the return water pipe 4. The return water end of the cleaning machine inlet valve 5 is connected to the return water valve body 41 through a third connecting pipe 52. Similarly, when it is necessary to connect the return water pipe 4 to the cleaning machine inlet valve, the return water valve body 41 is opened; when it is necessary to close the connection between the return water pipe 4 and the cleaning machine inlet valve, the return water valve body 41 is closed.

[0040] To ensure a more uniform distribution of the muddy water entering the inlet pipe 3, the water tank 1 is equipped with an agitator 9 to stir the liquid within. During the testing process and the subsequent rinsing stage, the agitator 9 is controlled to stir the water in the water tank 1, allowing the muddy water and rinsing water in the water tank 1 to pass more evenly through the cleaning machine's inlet valve 5, thereby improving the stability and accuracy of the test results and enhancing the rinsing effect.

[0041] In addition, to further improve testing accuracy, it is necessary to control the flow rate of the muddy water through the inlet valve 5 of the cleaning machine so that the flow rate is close to the flow rate during normal operation of the cleaning machine. Based on this requirement, a water flow sensor 32 is installed on the inlet pipe 3 to detect the inlet water flow rate. Based on the detection data of the flow sensor, the opening degree of the aforementioned inlet valve 5, water supply valve body 31, and return valve body 41 of the cleaning machine can be adjusted so that the flow rate reaches the set flow rate data.

[0042] To simultaneously test multiple inlet valves 5 of the cleaning machine, multiple sets of inlet pipes 3 and return pipes 4 are matched, with each set of inlet pipes 3 and return pipes 4 connected to one inlet valve 5 of the cleaning machine. A main inlet pipe 11 and a main return pipe 12 are connected to the water tank 1. Each inlet pipe 3 is connected to the main inlet pipe 11, and each return pipe 4 is connected to the main return pipe 12. A booster pump 2 is installed on the main inlet pipe 11. During testing, the booster pump 2 pumps the muddy water from the water tank 1 into the main inlet pipe 11, and the water in the main inlet pipe 11 is then distributed to each inlet pipe 3. Similarly, the muddy water passing through the inlet valves 5 of each inlet pipe 3 first flows back to the main return pipe 12 via the return pipe, and then back to the water tank 1 via the main return pipe 12. This allows for the simultaneous testing of multiple inlet valves 5 of the cleaning machine. Of course, each water inlet pipe 3 is equipped with the aforementioned start ball valve, pressure sensor 8 and other devices.

[0043] In addition, each inlet pipe 3 and return pipe 4 is connected to a water supply valve body 31 and a return valve body 41. When the number of inlet valves 5 of the cleaning machine to be tested is less than the number of inlet pipes 3 and return pipes 4, the water supply valve bodies 31 and return valve bodies 41 on some groups of inlet pipes 3 and return pipes 4 can be closed. Correspondingly, the inlet valves 5 of the cleaning machine are not connected between these groups of inlet pipes 3 and return pipes 4, and the testing of the inlet valves 5 of other cleaning machines can also be carried out.

[0044] In addition, to facilitate the replacement and assembly of the cleaning machine inlet valve 5, and to allow for the cyclical testing of different cleaning machine inlet valves 5 using the cleaning machine inlet valve anti-sand performance testing device, a vertically mounted mounting plate is installed inside the housing. The water supply valve body 31 and the return valve body 41 are both fixed to this mounting plate. During use, the cleaning machine inlet valve 5 to be tested is connected between the water supply valve body 31 and the return valve body 41 via the second connecting pipe 51 and the third connecting pipe 52, thus achieving convenient installation of the cleaning machine inlet valve 5. Furthermore, since other components are fixed and do not require disassembly relative to the frame 100, and their circuitry is also relatively fixed, no electrical connection is needed. However, the replacement cleaning machine inlet valve 5 requires additional connection; therefore, an electrically connected socket can be installed on the mounting plate to electrically connect the cleaning machine inlet valve 5 to the socket, thus achieving electrical connection of the cleaning machine inlet valve 5.

[0045] To facilitate intelligent control, a control module, operation keys, and a display are installed on the rack 100. The control module is electrically connected to the operation keys, display, and the aforementioned booster pump 2, cleaning machine inlet valve 5, pneumatic ball valve 7, water supply valve body 31, return water valve body 41, agitator 9, water filling valve 62, water flow sensor 32, water level sensor, and turbidity sensor 13, etc., to achieve automatic test control through the control module. If needed, the operation keys and display can be combined into a touch screen for simultaneous display and operation. Of course, in addition to the touch screen, other convenient operation devices and display devices such as buttons and indicator lights can also be installed.

[0046] The specific operating procedure of the cleaning machine inlet valve anti-sand performance testing device is as follows: After electrically connecting and pipe-connecting the cleaning machine inlet valve 5 to be tested on the frame 100, turn on the overall power supply and water supply of the testing device. Set the upper and lower limits of the water level in the water tank 1 via the touch screen, and set the water supply pressure, water flow rate, number of on / off cycles and on / off intervals of the cleaning machine inlet valve 5. According to the required sand ratio, prepare wastewater through the sand mixing tank 6, that is, add a certain proportion of sand to the sand mixing tank 6, and then open the water valve 62 to add water to the sand mixing tank 6. The water mixed with the sand flows into the water tank 1 until the water level in the water tank 1 reaches the set upper and lower limits. After clicking the test button, the cleaning machine inlet valve anti-sand performance testing device will operate automatically.

[0047] Specifically, the agitator 9 on the water tank 1 is controlled to work, and the mud and sand water in the water tank 1 is thoroughly mixed. Then, the booster pump 2 is controlled to work according to the set water supply pressure. The booster pump 2 pressurizes the mud and sand water in the water tank 1 to the set water supply pressure, and then delivers it to each water inlet pipe 3 through the main water inlet pipe 11. At the same time, the water flow sensor 32 and pressure sensor 8 on each water inlet pipe 3 detect the flow and pressure in the pipeline and feed the feedback on the touch screen. Then, the water inlet valve 5 of the cleaning machine is energized for a set time, and water flows through the water inlet valve 5. Then, the water flows back to the main return pipe through each return pipe and finally enters the water tank 1, thus forming a circulating water supply. At set time intervals, the power to the inlet valve 5 of the cleaning machine is cut off for a set duration, shutting off the water supply. Simultaneously, the pneumatic ball valve 7 upstream of the inlet of the inlet valve 5 automatically closes, maintaining pressure in the pipeline between the inlet valve 5 and the ball valve 7 for a period. Meanwhile, the pressure sensor 8 samples the water pressure in the inlet pipe 3. If the pressure is lower than the normal lower limit but higher than the leakage pressure, it is determined that the inlet valve 5 is leaking. The anti-sand performance detection device for the inlet valve pauses and alarms. If the pressure is within the set range, the inlet valve 5 is considered normal, and the above steps are repeated, with the number of cycles recorded on the touchscreen. This cycle continues until the inlet valve 5 leaks, thus obtaining the service life of the inlet valve 5 in a muddy water environment, thereby characterizing its anti-sand ability and anti-clogging performance.

[0048] The cleaning machine inlet valve anti-mud and sand performance testing device of this utility model actively prepares mud and sand water, which is introduced into the cleaning machine inlet valve 5 through some pipeline design, and works with pneumatic ball valve 7 and pressure sensor 8 to realize water leakage detection of the cleaning machine inlet valve 5. In this way, the aging test of the cleaning machine inlet valve 5 is realized, thereby characterizing the anti-mud and sand ability and anti-clogging performance of the cleaning machine inlet valve 5, which is conducive to effectively realizing quality control of the cleaning machine inlet valve 5 during the production stage.

[0049] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of the invention. However, the use of these terms is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A device for testing the anti-mud and sand resistance performance of a cleaning machine inlet valve, characterized in that: include Water tank (1), on which a booster pump (2) is connected; The water inlet pipe (3) is connected to the water tank (1) based on the booster pump (2); The return water pipe (4) is connected to the water tank (1); The inlet valve (5) of the cleaning machine is connected between the inlet pipe (3) and the return pipe (4); The mud and sand mixing tank (6) is connected to the water tank (1) through the first connecting pipe (61); A pneumatic ball valve (7) is installed on the water inlet pipe (3); The pressure sensor (8) is installed on the water inlet pipe (3) and located downstream of the pneumatic ball valve (7).

2. The device for testing the anti-mud and sand performance of the inlet valve of a cleaning machine according to claim 1, characterized in that: The outlet end of the water inlet pipe (3) is provided with a water supply valve body (31), and the water inlet end of the cleaning machine water inlet valve (5) is connected to the water supply valve body (31) through the second connecting pipe (51).

3. The device for testing the anti-mud and sand performance of the inlet valve of a cleaning machine according to claim 1, characterized in that: The inlet end of the return water pipe (4) is provided with a return water valve body (41), and the return water end of the cleaning machine inlet valve (5) is connected to the return water valve body (41) through a third connecting pipe (52).

4. The device for testing the anti-sand performance of the inlet valve of a cleaning machine according to any one of claims 1 to 3, characterized in that: The water tank (1) is equipped with a stirrer (9) for agitating the liquid inside.

5. The device for testing the anti-sand performance of the inlet valve of a cleaning machine according to any one of claims 1 to 3, characterized in that: The sediment mixing tank (6) is open to the top, and a water valve (62) connected to a water source is provided above the sediment mixing tank (6).

6. The device for testing the anti-sand performance of the inlet valve of a cleaning machine according to any one of claims 1 to 3, characterized in that: The inlet pipe (3) is equipped with a water flow sensor (32) for detecting the inlet water flow.

7. The device for testing the anti-sand performance of the inlet valve of a cleaning machine according to any one of claims 1 to 3, characterized in that: The water tank (1) is equipped with a water level sensor.

8. The device for testing the anti-sand performance of the inlet valve of a cleaning machine according to any one of claims 1 to 3, characterized in that: The water tank (1) is equipped with a turbidity sensor (13).

9. The device for testing the anti-sand performance of the inlet valve of a cleaning machine according to any one of claims 1 to 3, characterized in that: The inlet pipe (3) and return pipe (4) are matched and set in multiple sets, and each set of inlet pipe (3) and return pipe (4) is matched and connected to a cleaning machine inlet valve (5); The water tank (1) is connected to an inlet main pipe (11) and a return main pipe (12). Each inlet pipe (3) is connected to the inlet main pipe (11), and each return pipe (4) is connected to the return main pipe (12). The booster pump (2) is installed on the main water inlet pipe (11).

10. The device for testing the anti-sand performance of the inlet valve of a cleaning machine according to any one of claims 1 to 3, characterized in that: It also includes a frame (100), on which the water tank (1), booster pump (2), inlet pipe (3), return pipe (4), and cleaning machine inlet valve (5) are all mounted.

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