Testing device and method for dish washing machine

Abstract

The invention relates to the field of dish-washing machine testing devices, and discloses a testing device and method for a dish-washing machine, the testing device for the dish-washing machine comprises a testing box and further comprises multiple sets of rotating rollers, the two ends of the multiple sets of rotating rollers are rotationally connected with connecting columns, and a mounting groove is formed in the side wall of the testing box; the translation plate slides along the reciprocating screw, so that the dish-washing machine translates back and forth on the rotating roller and the vibration roller, the vibration roller moves towards one side for compressing the reset spring in cooperation with the action of gas pressure generated by the gas pressure plate in the sealing cavity, and finally the dish-washing machine is driven to rotate under the rebound action of the reset spring. And the vibration roller rapidly moves upwards and impacts the bottom of the dish-washing machine, so that a vibration effect is generated on the dish-washing machine, dynamic deep simulation of a transportation environment is realized, the sealing performance of the dish-washing machine can be tested and judged in a more real working condition environment, and the accuracy of a final test result is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dishwasher testing devices, in particular to a testing device and method for a dishwasher. BACKGROUND

[0002] As a popular household appliance, the performance and reliability of a dishwasher are directly related to the user's experience and the safety of household property; among them, the sealing performance of the whole machine is one of the most critical technical indicators of the dishwasher. Poor sealing performance can cause water leakage during washing or rinsing, which not only may damage the electrical components inside the machine, causing short circuits, fires and other safety hazards, but also may seep to the kitchen floor or even the downstairs residents, causing huge property losses and neighbor disputes.

[0003] Currently, a dishwasher will usually undergo strict static sealing tests before leaving the factory, such as pressure retention tests, water immersion tests, etc. However, the existing static simulation tests cannot simulate the real logistics transportation environment experienced by the dishwasher after leaving the factory. During transportation, the dishwasher will continuously bear the complex effects of road bumps, vehicle start-stop, turning centrifugal force, etc., which will have some impact on its sealing performance. Therefore, only using traditional static sealing tests will result in insufficient accuracy of the final test results. Therefore, a testing device for a dishwasher is proposed. SUMMARY

[0004] The testing device for a dishwasher provided by the present application can test and determine the sealing performance of the dishwasher in a more realistic working condition environment by simulating a reciprocating movement and continuous vibration test environment, thereby improving the accuracy of the final test results and solving the problem of insufficient accuracy of the final test results caused by traditional static sealing tests mentioned in the background.

[0005] The present application provides the following technical solutions: A testing device for a dishwasher, comprising a test box, further comprising: a plurality of rotating rollers, both ends of the plurality of rotating rollers are rotatably connected with connecting columns, an installation groove is formed on the side wall of the test box, the other end of the connecting column is fixedly connected in the installation groove, a piston bin, the piston bin is provided with two groups and is fixed on the outer walls of the test box, wherein a vibration roller is installed at the bottom of the inner cavity of the test box, the end of the vibration roller is installed in the piston bin, and a gas pressure part for driving the vibration roller to move up and down is arranged on the test box; a positioning box, the positioning box is provided with two groups and is fixed on the inner cavities of the test box, and a fixing part for clamping the dishwasher from both sides is installed in the positioning box, wherein a translation part for driving the dishwasher to reciprocate along the plurality of rotating rollers is installed on both sides of the test box.

[0006] As a preferred technical scheme of the present application, the fixing part comprises a mounting plate, the mounting plate is slidingly connected in the positioning box, the side of the mounting plate towards the middle of the inner cavity of the test box is fixedly connected with an adsorption disc, a guide groove is formed on the outer wall of the positioning box, a translation plate is slidingly connected in the guide groove, the end of the translation plate towards the mounting plate is slidingly connected with an extension sleeve plate, the end of the extension sleeve plate is fixedly connected on the side wall of the mounting plate, a clamping air cylinder is fixedly connected on the translation plate, and the extension end of the clamping air cylinder is fixedly connected on the side wall of the mounting plate.

[0007] As a preferred technical scheme of the present application, the translation part comprises a reciprocating screw, the reciprocating screw is rotationally connected on the outer wall of the positioning box, the translation plate is threadedly sleeved on the reciprocating screw, the top of the test box is fixedly connected with a driving motor, one end of the reciprocating screw is fixedly connected with a linkage shaft, and the linkage shaft and the driving motor are drivingly connected through a belt pulley set.

[0008] As a preferred technical scheme of the present application, the inner cavity of the positioning box is surrounded by a partition plate on both sides to form a sealed cavity, an air pressure plate is slidingly connected in the sealed cavity, the side wall of the air pressure plate and the side wall of the translation plate are fixedly connected through a connecting rod, one side of the sealed cavity is fixedly and communicatively provided with an air suction pipe, the other end of the air suction pipe is in communication with the inner cavity of the test box, a one-way valve is arranged in the air suction pipe, the bottom of the inner cavity of the test box is obliquely arranged and laid with anhydrous copper sulfate test paper, and a sealing plug is arranged on the outer wall of the test box at the lower end of the inclination.

[0009] As a preferred technical scheme of the present application, the air pressure part comprises two groups of piston plates, the two groups of piston plates are slidingly connected in the two side cavities of the piston chamber respectively, the bottom of the piston plate is fixedly connected with a mounting seat, a limiting sliding groove is formed between the piston chamber and the mounting groove, the both ends of the vibration roller are rotationally connected with limiting sliding rods, the other end of the limiting sliding rod penetrates through the limiting sliding groove and is fixedly connected on the side wall of the mounting seat, a return spring is fixedly connected between the bottom of the mounting seat and the cavity bottom of the piston chamber, the other side of the sealed cavity is fixedly and communicatively provided with an air filling pipe, the other end of the air filling pipe is in communication with the inner cavity of the piston chamber, and a one-way valve is arranged in the air filling pipe.

[0010] As a preferred technical scheme of the present application, the bottom of the mounting seat is fixedly connected with an exhaust pipe, the reset spring is wrapped outside the exhaust pipe, the exhaust pipe penetrates to below the piston chamber and is in sliding connection with the piston chamber, an exhaust groove is formed in the mounting seat, the top end of the exhaust groove is in communication with the upper cavity of the piston chamber, the bottom end of the exhaust groove is in communication with the top end of the exhaust pipe, an electromagnetic valve is arranged in the exhaust groove, the rotating roller and the connecting column are both hollow and in communication, the vibrating roller and the limiting slide rod are both hollow and in communication, the connecting column and the limiting slide rod are in communication through a gas guide hose, the gas guide hose is arranged in the mounting groove, the connecting columns of multiple groups are in communication with each other, and the inner cavity of the limiting slide rod is in communication with the exhaust groove.

[0011] As a preferred technical scheme of the present application, the outer wall of the piston chamber is fixedly connected with a bidirectional telescopic rod, the telescopic ends of the bidirectional telescopic rod penetrate into the cavities of the two piston chambers, and the telescopic ends of the bidirectional telescopic rod are both provided with a pressure sensor, when the telescopic ends of the bidirectional telescopic rod are inserted into the piston chamber, the piston plate is limited above the telescopic ends, and when the dishwasher enters the test box, the rotating roller and the vibrating roller are in a flush state under the action of gravity.

[0012] As a preferred technical scheme of the present application, the top of the test box is provided with a water injection pipe, the water injection pipe is provided with a water flow meter, and the top of the test box is provided with a sealing cover.

[0013] As a preferred technical scheme of the present application, the two sides of the test box are both fixedly connected with a sealing telescopic rod, the top of the front end of the test box is inserted with a sealing plate, and the telescopic top end of the sealing telescopic rod is fixedly connected with the top of the sealing plate.

[0014] A test method for a dishwasher, the steps are as follows: Step one: before the test starts, record the initial reading of the water meter on the water supply pipe; Step two: start the dishwasher, and select a standard washing program for water efficiency test; Step three: after the dishwasher runs a complete set of washing programs, immediately record the final reading of the water meter; Step four: repeat the above steps multiple times, calculate the water consumption of each test, and the average water consumption of multiple tests; Step five: according to the calculation result and the rated capacity of the dishwasher, refer to the national mandatory standard, and the water efficiency grade can be evaluated.

[0015] Compared with the prior art, the present application provides a test device and method for a dishwasher, which has the following beneficial effects: 1. The test device for the dishwasher, by sliding the translation plate along the reciprocating screw rod, the dishwasher reciprocates on the rotating roller and the vibrating roller, realizes the dynamic preliminary simulation of the transportation environment, and cooperates with the gas pressure generated in the sealed cavity by the air pressure plate, the vibrating roller moves to one side of the compression return spring, and finally releases the continuous gas pressure, under the rebound action of the return spring, the vibrating roller quickly moves up and hits the bottom of the dishwasher, thereby generating a vibrating effect on the dishwasher, realizing the dynamic deep simulation of the transportation environment, so that the sealing performance of the dishwasher can be tested and judged in a more realistic working condition environment, thereby improving the accuracy of the final test results.

[0016] 2. The test device for the dishwasher, during the reciprocating movement of the translation plate, negative pressure suction will be generated in the sealed cavity, so that the gas in the test box is sucked into the sealed cavity, thereby reducing the air pressure in the test box, so that the test box is in a low pressure state relative to the inner cavity of the dishwasher, and cooperates with the reciprocating movement and vibration effect, so that the water flow can penetrate the leakage point more quickly, better realizing the test of whether the dishwasher has sealing defects, thereby improving the test precision.

[0017] 3. The test device for the dishwasher, when the continuous gas in the piston bin is discharged along the exhaust groove and the exhaust pipe, according to Bernoulli's principle, at this time the exhaust groove is in a low pressure state, at this time the gas flow in the rotating roller and the vibrating roller will be sucked into the exhaust groove and discharged together, thereby realizing the rapid heat exchange in the rotating roller and the vibrating roller, reducing the heat generated during the repeated friction of the dishwasher on the rotating roller and the vibrating roller, and improving the wear protection of the bottom of the dishwasher, the rotating roller and the vibrating roller. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn according to the actual proportion.

[0019] Figure 1 is a first perspective view of the overall structure of the present application; Figure 2 is a second perspective view of the overall structure of the present application; Figure 3 is a local sectional view of the test box of the present application; Figure 4 is a local sectional view of the test box of the present application; Figure 3 is an enlarged structure diagram of area A in the present application; Figure 5 is a schematic diagram of the internal structure of the positioning box of the present application; Figure 6 is a schematic diagram of the local sectional structure of the positioning box of the present application; Figure 7 Figure is a schematic diagram of the internal structure of the piston bin of the present application; Figure 8 Figure is a schematic diagram of the partial cross-sectional structure of the piston bin of the present application; Figure 9 Figure is a flow chart of the steps of the test method in the present application.

[0020] In the figure: 1, test box; 2, sealing telescopic rod; 21, sealing plate; 3, rotating roller; 31, connecting column; 32, mounting groove; 321, limiting sliding groove; 322, limiting sliding rod; 33, vibrating roller; 4, positioning box; 41, guide groove; 5, piston bin; 51, piston plate; 52, mounting seat; 521, exhaust groove; 53, return spring; 54, bidirectional telescopic rod; 6, mounting plate; 61, adsorption disc; 62, translation plate; 63, telescopic sleeve plate; 64, clamping air cylinder; 7, reciprocating screw; 71, drive motor; 72, linkage shaft; 73, belt pulley set; 8, sealing cavity; 81, air pressure plate; 82, air suction pipe; 83, sealing plug; 84, exhaust pipe; 85, inflation pipe; 86, air guide hose; 9, water injection pipe; 91, water flow meter; 92, sealing cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Embodiment one: With reference to Figures 1-8 A test device for a dishwasher, comprising a test box 1, both sides of the test box 1 are fixedly connected with sealing telescopic rods 2, the front end top of the test box 1 is inserted with a sealing plate 21, the telescopic top end of the sealing telescopic rod 2 is fixedly connected with the top of the sealing plate 21, further comprising: multiple groups of rotating rollers 3, both ends of the multiple groups of rotating rollers 3 are rotatably connected with connecting columns 31, a mounting groove 32 is formed on the side wall of the test box 1, the other end of the connecting column 31 is fixedly connected in the mounting groove 32, a piston bin 5, the piston bin 5 is provided with two groups and is fixed on the outer walls of the test box 1, wherein the inner cavity bottom of the test box 1 is installed with a vibrating roller 33, the end of the vibrating roller 33 is installed in the piston bin 5, and the test box 1 is provided with an air pressure part for driving the vibrating roller 33 to move up and down; a positioning box 4, the positioning box 4 is provided with two groups and is fixed on both sides of the inner cavity of the test box 1, and a fixing part for clamping the dishwasher from both sides is installed in the positioning box 4, wherein both sides of the test box 1 are installed with a translation part for driving the dishwasher to reciprocally move along the multiple groups of rotating rollers 3.

[0023] Through the arrangement of the above structure, the dishwasher is pushed into the test box 1, and the bottom is arranged on the rotating roller 3 and the vibration roller 33, then the sealing plate 21 is driven to move downward by the two side sealing telescopic rods 2, so as to seal the test box 1 to form a relatively sealed detection environment, then the dynamic transportation environment in the test box 1 is simulated, and the sealing performance of the dishwasher in operation is tested in the dynamic simulation environment, so as to obtain a test result closer to the actual working condition, and the accuracy of the test result is improved.

[0024] Referring to Figures 3-6 , the fixing part includes a mounting plate 6 which is slidingly connected in the positioning box 4, and the side of the mounting plate 6 facing the middle part of the inner cavity of the test box 1 is fixedly connected with an adsorption disc 61, a guide groove 41 is formed in the outer wall of the positioning box 4, a translation plate 62 is slidingly connected in the guide groove 41, and the end of the translation plate 62 facing the mounting plate 6 is slidingly connected with an extension sleeve plate 63, and the end of the extension sleeve plate 63 is fixedly connected on the side wall of the mounting plate 6. A clamping air cylinder 64 is fixedly connected on the translation plate 62, and the extension end of the clamping air cylinder 64 is fixedly connected on the side wall of the mounting plate 6; the translation part includes a reciprocating screw 7 which is rotatably connected on the outer wall of the positioning box 4, and the translation plate 62 is threadedly sleeved on the reciprocating screw 7. A driving motor 71 is fixedly connected on the top of the test box 1, one end of the reciprocating screw 7 is fixedly connected with a linkage shaft 72, and the linkage shaft 72 is drivingly connected with the driving motor 71 through a belt pulley set 73.

[0025] Through the arrangement of the above structure, the two clamping air cylinders 64 start to work, push the two adsorption discs 61 to move towards the outer wall of the dishwasher at the same time, and finally make the adsorption disc 61 tightly adhere to the outer wall of the dishwasher under the action of the extrusion force, so as to fix the dishwasher. Then the driving motor 71 is started, and the transmission of the belt pulley set 73 makes the two linkage shafts 72 drive the two reciprocating screws 7 to rotate. At this time, the two translation plates 62 will reciprocate along the corresponding reciprocating screw 7, so as to push the dishwasher to translate on the rotating roller 3 and the vibration roller 33, realize the dynamic preliminary simulation of the transportation environment, so as to better find the air tightness defects of the dishwasher in the dynamic environment, and improve the accuracy of the test result.

[0026] Referring to Figure 5 , Figure 6 and Figure 8 , the inner cavities of the positioning box 4 are surrounded by the partition plates to form a sealed cavity 8, a gas pressure plate 81 is slidingly connected in the sealed cavity 8, the side wall of the gas pressure plate 81 is fixedly connected with the side wall of the translation plate 62 through a connecting rod, one side of the sealed cavity 8 is fixedly and communicatively provided with an air suction pipe 82, the other end of the air suction pipe 82 is communicated with the inner cavity of the test box 1, a one-way valve is arranged in the air suction pipe 82, the bottom of the inner cavity of the test box 1 is arranged in an inclined manner and is paved with copper sulfate anhydrous test paper, and a sealing plug 83 is arranged on the outer wall of the test box 1 at the lower end of the inclination.

[0027] Need to be explained, the one-way valve in the suction pipe 82, only allows the gas in the test box 1 is sucked into the sealed cavity 8; Through the structure of the above setting, in the process of reciprocating plate 62 reciprocating, will push both sides of the air pressure plate 81 reciprocating sliding in the sealed cavity 8, when the air pressure plate 81 to the side away from the inflation pipe 85, will produce negative pressure suction in the sealed cavity 8, so as to open the one-way valve in the suction pipe 82, so that the gas in the test box 1 is sucked into the sealed cavity 8, this is constantly from the test box 1 extraction of gas, will reduce the gas pressure in the test box 1, so that the test box 1 relative to the cavity in the dishwasher is in low pressure state, and cooperate with reciprocating and vibration effect, so as to make the water flow more quickly penetrate the leakage point, better realize whether the dishwasher exists sealing defect test, thereby improving the test precision.

[0028] Referring to Figure 3 , Figure 7 and Figure 8 , the air pressure part includes two groups of piston plate 51, two groups of piston plate 51 are slidingly connected in the two side cavities of the piston chamber 5, the bottom of the piston plate 51 is fixedly connected with the mounting seat 52, the mounting groove 32 between the piston chamber 5 and the mounting groove 32 is provided with a limiting sliding groove 321, both ends of the vibration roller 33 are rotatably connected with the limiting sliding rod 322, the other end of the limiting sliding rod 322 penetrates through the limiting sliding groove 321 and is fixedly connected on the side wall of the mounting seat 52, and the bottom of the mounting seat 52 and the bottom of the cavity of the piston chamber 5 are fixedly connected with the reset spring 53, the other side of the sealed cavity 8 is fixedly connected with the inflation pipe 85, the other end of the inflation pipe 85 is connected with the inner cavity of the piston chamber 5, and the inflation pipe 85 is provided with a one-way valve; the outer wall of the piston chamber 5 is fixedly connected with the bidirectional telescopic rod 54, the telescopic end of the bidirectional telescopic rod 54 penetrates into the cavity of the two side piston chamber 5, and the telescopic end of the bidirectional telescopic rod 54 is provided with a pressure sensor, when the telescopic end of the bidirectional telescopic rod 54 is inserted into the piston chamber 5, the piston plate 51 is limited above, and when the dishwasher enters the test box 1, under the action of its gravity, the rotating roller 3 and the vibration roller 33 are in the same plane state.

[0029] Need to be explained, the one-way valve in the inflation pipe 85, only allows the gas in the sealed cavity 8 into the piston chamber 5; With the above structure, when the air pressure plate 81 slides towards the side closer to the inflation pipe 85, it compresses the gas in the sealed cavity 8 and opens the one-way valve in the inflation pipe 85, allowing the compressed gas to enter the piston chamber 5 along the inflation pipe 85. The continuous influx of gas into the piston chamber 5 increases the gas pressure inside the piston chamber 5. At this time, the pressure sensor at the end of the bidirectional telescopic rod 54 senses the pressure and causes both ends of the bidirectional telescopic rod 54 to retract inward simultaneously, thereby releasing the limiting effect on the piston plate 51. At this time, the high-pressure gas pushes the piston plate 51 to slide towards the side of the compression return spring 53, thereby driving the vibrating roller 33 to move downward and causing the return spring to reset. Spring 53 is gradually charged with energy, and then opens the solenoid valve in the exhaust slot 521, allowing high-pressure gas to be quickly discharged outward along the exhaust pipe 84. At this time, under the rebound action of the return spring 53, the vibrating roller 33 will quickly move upward and hit the bottom of the dishwasher, thereby generating vibration on the dishwasher and realizing dynamic deep simulation of the transportation environment. At the same time, the dishwasher is started, and the anhydrous copper sulfate test paper laid at the bottom of the test box 1 is observed to see if it changes color, that is, whether the dishwasher leaks water when it is started in the dynamic simulation environment. In this way, the sealing performance of the dishwasher can be tested and judged in a more realistic working environment, thereby improving the accuracy of the final test results.

[0030] Reference Figure 7 , Figure 8 An exhaust pipe 84 is fixedly connected to the bottom of the mounting base 52. A return spring 53 is wrapped around the outside of the exhaust pipe 84. The exhaust pipe 84 passes through the piston chamber 5 and is slidably connected to it. An exhaust groove 521 is provided in the mounting base 52. The top end of the exhaust groove 521 is connected to the upper cavity of the piston chamber 5, and the bottom end of the exhaust groove 521 is connected to the top end of the exhaust pipe 84. A solenoid valve is provided in the exhaust groove 521. The rotating roller 3 and the connecting column 31 are hollow and connected. The vibrating roller 33 and the limiting slide rod 322 are hollow and connected. The connecting column 31 and the limiting slide rod 322 are connected through a gas guide hose 86. The gas guide hose 86 is located in the mounting groove 32. Multiple sets of connecting columns 31 are interconnected. The inner cavity of the limiting slide rod 322 is connected to the exhaust groove 521.

[0031] Through the arrangement of the above structure, when the exhaust groove 521 rapidly discharges gas outward, according to Bernoulli's principle, the pressure in the area with high gas flow rate is low, so the exhaust groove 521 will be in a low pressure state. At this time, since the inner cavities of the rotating roller 3 and the vibrating roller 33 are connected with the exhaust groove 521, the gas flow in the rotating roller 3 and the vibrating roller 33 will be sucked into the exhaust groove 521 and discharged together. Subsequently, when the electromagnetic valve in the exhaust groove 521 is closed, the external gas flow will flow along the exhaust pipe 84 and the exhaust groove 521 to replenish the rotating roller 3 and the vibrating roller 33, so as to realize rapid heat exchange in the rotating roller 3 and the vibrating roller 33, reduce the heat generated during repeated friction of the dishwasher on the rotating roller 3 and the vibrating roller 33, and improve the wear protection of the bottom of the dishwasher, the rotating roller 3 and the vibrating roller 33.

[0032] With reference to Figure 1 , Figure 2 , the top of the test box 1 is provided with a water injection pipe 9, and the water injection pipe 9 is provided with a water flow meter 91. The top of the test box 1 is provided with a sealing cover 92.

[0033] Through the arrangement of the above structure, before the test starts, the water injection pipe 9 is connected with the dishwasher, and the difference between the readings of the water flow meter 91 before and after the dishwasher works can be used to obtain the water consumption of the dishwasher in a single working process. After repeated tests, the average water consumption of the dishwasher is calculated, and then the water efficiency grade of the dishwasher can be evaluated according to the rated capacity of the dishwasher and the national mandatory standard.

[0034] Example two: With reference to Figure 9 A test method for a dishwasher, comprising the following steps: Step one: record the initial reading of the water meter on the water supply pipe before the test starts; Step two: start the dishwasher and select the standard washing program for water efficiency test; Step three: immediately record the final reading of the water meter after the dishwasher runs the complete set of washing programs; Step four: repeat the above steps multiple times to calculate the water consumption of each test and the average water consumption of multiple tests; Step five: according to the calculation results and the rated capacity of the dishwasher, the water efficiency grade can be evaluated by comparing with the national mandatory standard.

[0035] With reference to Figures 1-8In the present application, when in use, first push the dishwasher into the test box 1, and make its bottom rest on the rotating roller 3 and the vibration roller 33, then open the sealing cover 92, connect the water injection pipe 9 with the dishwasher, close the sealing cover 92, finally use the two sealing telescopic rods 2 to drive the sealing plate 21 to move down, so as to close the test box 1, form a relatively sealed detection environment, so as to carry out subsequent test work.

[0036] Next, the two side clamping cylinders 64 start to work, push the two side adsorption plates 61 to move towards the outer wall of the dishwasher, and finally make the adsorption plates 61 tightly adhere to the outer wall of the dishwasher under the action of extrusion force, then start the driving motor 71, use the transmission action of the belt pulley set 73 to make the two side linkage shafts 72 drive the two side reciprocating screws 7 to rotate, at this time the two side translation plates 62 will reciprocate along the corresponding reciprocating screw 7, so as to push the dishwasher to translate on the rotating roller 3 and the vibration roller 33, realize the dynamic preliminary simulation of the transportation environment.

[0037] And in the process of reciprocating movement of the translation plate 62, the two side air pressure plates 81 will reciprocate in the sealing cavity 8, when the air pressure plate 81 slides to the side close to the inflation pipe 85, the gas in the sealing cavity 8 will be compressed, and the one-way valve in the inflation pipe 85 will be pushed open, so that the compressed gas enters the piston chamber 5 along the inflation pipe 85; when the air pressure plate 81 slides away from the inflation pipe 85, a negative pressure suction force will be generated in the sealing cavity 8, so as to open the one-way valve in the air suction pipe 82, so that the gas in the test box 1 is sucked into the sealing cavity 8.

[0038] Firstly, the gas continuously entering the piston chamber 5 will increase the gas pressure in the piston chamber 5, at this time the pressure sensor at the end of the bidirectional telescopic rod 54 will sense the pressure action and make the two ends of the bidirectional telescopic rod 54 retract inward at the same time, so as to release the limiting action on the piston plate 51, at this time the high-pressure gas will push the piston plate 51 to slide to one side of the compression return spring 53, so as to drive the vibration roller 33 to move downward, and the return spring 53 is gradually energized, then the electromagnetic valve in the exhaust groove 521 is opened, so that the high-pressure gas is rapidly discharged outward along the exhaust pipe 84, at this time, under the rebound action of the return spring 53, the vibration roller 33 will quickly move upward and hit the bottom of the dishwasher, so as to produce a vibration effect on the dishwasher, realizing dynamic deep simulation of the transportation environment, at the same time, the dishwasher is started, and it is observed whether the copper sulfate test paper laid at the bottom of the test box 1 is discolored, that is, whether the dishwasher exists leakage in the dynamic simulation environment, so as to test and determine the sealing performance of the dishwasher in a more realistic working condition, thereby improving the accuracy of the final test result. And when the exhaust groove 521 rapidly discharges gas outward, according to Bernoulli's principle, the pressure in the area where the gas flow is fast is small, so the exhaust groove 521 will be in a low-pressure state, at this time, since the inner cavities of the rotating roller 3 and the vibration roller 33 are connected with the exhaust groove 521, the gas flow in the rotating roller 3 and the vibration roller 33 will be sucked into the exhaust groove 521 and discharged together, then when the electromagnetic valve in the exhaust groove 521 is closed, the external airflow will be replenished along the exhaust pipe 84 and the exhaust groove 521 to the rotating roller 3 and the vibration roller 33, so as to realize rapid heat exchange in the rotating roller 3 and the vibration roller 33, reduce the heat generated during the repeated friction of the dishwasher on the rotating roller 3 and the vibration roller 33, and improve the wear protection of the bottom of the dishwasher, the rotating roller 3 and the vibration roller 33.

[0039] Secondly, after continuously extracting gas from the test box 1, the gas pressure in the test box 1 will be reduced, so that the test box 1 is in a low-pressure state relative to the inner cavity of the dishwasher, and cooperates with the reciprocating movement and vibration effect, so as to make the water flow penetrate the leakage point more quickly, better realize the test of whether the dishwasher exists sealing defect, and further improve the test precision.

[0040] The components not described in detail in this paper are prior art.

[0041] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A testing device for a dishwasher, comprising a test cabinet (1), characterized in that, Also include: A plurality of groups of rotating roller (3), both ends of the plurality of groups of rotating roller (3) are rotatably connected with connecting column (31), the side wall of test box (1) is provided with mounting groove (32), the other end of connecting column (31) is fixedly connected in mounting groove (32), Piston bin (5), the piston bin (5) is provided with two groups, and is fixed on the outer wall of test box (1) on both sides, Wherein, the bottom of the inner cavity of the test box (1) is provided with a vibrating roller (33), the end of the vibrating roller (33) is installed in the piston bin (5), and the test box (1) is provided with a gas pressure part for driving the vibrating roller (33) to move up and down; Positioning box (4), the positioning box (4) is provided with two groups, and is fixed on the inner cavity of test box (1) on both sides, and the positioning box (4) is provided with a fixing part for clamping dishwasher from both sides, Wherein, the both sides of the test box (1) are provided with a translation part for driving the dishwasher to move back and forth along the plurality of groups of rotating roller (3).

2. A test device for a dishwasher according to claim 1, characterized in that The fixing part includes a mounting plate (6), the mounting plate (6) is slidably connected in the positioning box (4), the side of the mounting plate (6) towards the middle part of the inner cavity of the test box (1) is fixedly connected with an adsorption disc (61), the outer wall of the positioning box (4) is provided with a guide groove (41), the guide groove (41) is slidably connected with a translation plate (62), the end of the translation plate (62) towards the mounting plate (6) is slidably connected with an extension sleeve plate (63), the end of the extension sleeve plate (63) is fixedly connected on the side wall of the mounting plate (6), the translation plate (62) is fixedly connected with a clamping air cylinder (64), the extension end of the clamping air cylinder (64) is fixedly connected on the side wall of the mounting plate (6).

3. A test device for a dishwasher according to claim 2, characterized in that The translation part includes a reciprocating screw (7), the reciprocating screw (7) is rotatably connected on the outer wall of the positioning box (4), and the translation plate (62) is threadedly connected on the reciprocating screw (7), the top of the test box (1) is fixedly connected with a driving motor (71), one end of the reciprocating screw (7) is fixedly connected with a linkage shaft (72), the linkage shaft (72) and the driving motor (71) are drivingly connected through a belt wheel set (73).

4. The test device for a dishwasher according to claim 2, characterized in that The inner cavity of the positioning box (4) is surrounded by a partition plate to form a sealed cavity (8), the sealed cavity (8) is slidably connected with a gas pressure plate (81), the side wall of the gas pressure plate (81) and the side wall of the translation plate (62) are fixedly connected through a connecting rod, one side of the sealed cavity (8) is fixedly and communicatively provided with a suction pipe (82), the other end of the suction pipe (82) is communicated with the inner cavity of the test box (1), and the suction pipe (82) is provided with a one-way valve, the inner cavity of the test box (1) is obliquely arranged and laid with copper sulfate paper without water, and a sealing plug (83) is installed on the outer wall of the test box (1) at the lower end of the inclination.

5. A test device for a dishwasher according to claim 4, characterized in that The air pressure part comprises two groups of piston plates (51), which are respectively slidably connected in the two side cavities of the piston bin (5), the bottom of the piston plate (51) is fixedly connected with a mounting seat (52), a limiting sliding groove (321) is arranged between the piston bin (5) and the mounting groove (32), the both ends of the vibration roller (33) are rotatably connected with limiting sliding rods (322), the other ends of the limiting sliding rods (322) penetrate through the limiting sliding groove (321) and are fixedly connected with the side wall of the mounting seat (52), the bottom of the mounting seat (52) and the bottom of the cavity of the piston bin (5) are fixedly connected with a reset spring (53), the other side of the sealing cavity (8) is fixedly and communicatively provided with an air charging pipe (85), the other end of the air charging pipe (85) is in communication with the inner cavity of the piston bin (5), and a one-way valve is arranged in the air charging pipe (85).

6. A test device for a dishwasher according to claim 5, characterized in that The bottom of the mounting seat (52) is fixedly connected with an air exhaust pipe (84), the reset spring (53) is wrapped outside the air exhaust pipe (84), the air exhaust pipe (84) penetrates to the lower side of the piston bin (5) and is slidably connected therewith, the mounting seat (52) is provided with an air exhaust groove (521), the top end of the air exhaust groove (521) is in communication with the upper cavity of the piston bin (5), the bottom end of the air exhaust groove (521) is in communication with the top end of the air exhaust pipe (84), and an electromagnetic valve is arranged in the air exhaust groove (521), The rotating roller (3) and the connecting column (31) are both hollow and in communication, the vibration roller (33) and the limiting sliding rod (322) are both hollow and in communication, the connecting column (31) and the limiting sliding rod (322) are in communication through a gas guide hose (86), the gas guide hose (86) is located in the mounting groove (32), a plurality of connecting columns (31) are in communication with each other, and the inner cavities of the limiting sliding rods (322) are in communication with the air exhaust groove (521).

7. A testing device for a dishwasher according to claim 5, characterized in that The outer wall of the piston bin (5) is fixedly provided with a bidirectional telescopic rod (54), the telescopic ends of the bidirectional telescopic rod (54) penetrate into the cavities of the two piston bins (5), and the telescopic ends of the bidirectional telescopic rod (54) are both provided with a pressure sensor, When the telescopic ends of the bidirectional telescopic rod (54) are inserted into the piston bin (5), the piston plate (51) is limited above, and when the dishwasher enters the test box (1), the rotating roller (3) and the vibration roller (33) are in a flush state under the action of gravity.

8. The test device for a dishwasher according to claim 1, characterized in that The top of the test box (1) is provided with a water injection pipe (9), the water injection pipe (9) is provided with a water flow meter (91), and the top of the test box (1) is provided with a sealing cover (92).

9. The test device for a dishwasher according to claim 1, characterized in that, Both sides of the test box (1) are fixedly connected with sealing telescopic rods (2), the top of the front end of the test box (1) is inserted with a sealing plate (21), and the telescopic top end of the sealing telescopic rod (2) is fixedly connected with the top of the sealing plate (21).

10. A test method for a dishwasher, characterized in that, The steps are as follows: Step one: before the test starts, record the initial reading of the water meter on the water supply pipe; Step two: start the dishwasher and select the standard washing program for water efficiency test; Step 3: Record the final reading of the water meter immediately after the complete set of washing program is finished; Step 4: Repeat the above steps several times, calculate the water consumption of each test, and the average water consumption of multiple tests; Step 5: According to the calculation results and the rated capacity of the dishwasher, refer to the national mandatory standard, and evaluate its water efficiency grade.

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