Testing device, testing system and testing method

Abstract

This invention provides a testing device, testing system, and testing method, relating to the field of floor scrubber technology, and solves the technical problem that floor scrubber sealing tests cannot be conducted for extended periods. The testing device includes an expansion component containing internal gas, with the air inlet of the device under test connected to the expansion component to continuously extract gas during testing. It also includes a pressure stabilizing component mounted on the expansion component. When the device under test continuously extracts gas from the expansion component, the pressure stabilizing component provides supplementary gas to the expansion component to ensure pressure balance within it. By employing a pressure-equalizing chamber expansion method, this invention allows the floor scrubber to extract gas from the chamber during suction testing, and continuously replenishes the chamber with air through the air inlet, maintaining balanced pressure within the chamber. This ensures the floor scrubber can always operate normally, achieving a truly stable and continuous pressure testing effect.

Description

Technical Field

[0001] This invention relates to the field of floor scrubber technology, and in particular to a testing device, testing system and testing method for testing the sealing performance of floor scrubbers. Background Technology

[0002] The water and air circuits of a floor scrubber are required to have a certain degree of airtightness in their structural design, and the overall suction power of the machine needs to meet certain values ​​to achieve the function of completely sucking back wastewater and dirt. Therefore, it is necessary to conduct an airtightness test on the water and air circuit systems after the entire machine is assembled.

[0003] Currently, the market standard for testing the overall sealing performance of airtight devices involves directly applying negative pressure to the entire unit for online testing. While this method is fast, it has a drawback: if the air inlet is blocked, the fan cooling system fails during negative pressure testing, causing the fan temperature to rise rapidly and triggering a shutdown protection mechanism. Therefore, the negative pressure testing time cannot be too long; the machine must be stopped immediately after the pressure reaches its maximum value upon startup to record the data. This type of testing makes it difficult to determine the balanced suction force of the entire unit under long-term stable conditions. Therefore, to address this problem, we need to invent a whole-unit pressure equalization testing device to ensure that the entire unit can still operate normally under long-term working conditions. Summary of the Invention

[0004] The purpose of this invention is to provide a testing device, testing system, and testing method to solve the technical problem that the sealing test of floor scrubbers cannot be conducted for a long time in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides a testing device, comprising an expansion component containing gas, wherein the air inlet of the device under test is connected to the interior of the expansion component to continuously extract gas during testing; and further comprising a voltage stabilizing component disposed on the expansion component, wherein when the device under test continuously extracts gas from the expansion component, the voltage stabilizing component can provide supplementary gas to the expansion component to ensure the gas pressure balance within the expansion component.

[0007] In some embodiments, the expansion component includes a pressure equalization chamber, a pressure sensor, and a control component. The pressure sensor is disposed inside the pressure equalization chamber for pressure monitoring. The control component is electrically connected to the pressure sensor.

[0008] In some embodiments, the air inlet of the device under test is connected to the inner cavity of the pressure equalization box through an air extraction component, and the pressure stabilizing component is disposed on the side of the pressure equalization box away from the air extraction component.

[0009] In some embodiments, the pressure stabilizing assembly includes an air inlet formed on the side wall of the pressure equalizing chamber.

[0010] In some embodiments, the specifications of the air inlet are adapted to the suction capacity of the device under test.

[0011] In some embodiments, the air inlet is provided with a pressure regulating element for adjusting the amount of air supplied.

[0012] In some embodiments, the control component includes a display and a computing module, the computing module being electrically connected to both the display and the pressure sensor.

[0013] In some embodiments, the expansion component and the device under test are connected via a suction assembly.

[0014] In some embodiments, the suction assembly includes an air tube and a sealing plug.

[0015] Secondly, the present invention provides a testing system including a floor scrubber and a testing device for performing a sealing test on the floor scrubber. When performing a sealing test on the floor scrubber, the air inlet of the floor scrubber is connected to the testing device through a suction assembly.

[0016] In some embodiments, the floor scrubber includes a floor brush assembly, and the air inlet is disposed on the floor brush assembly; one end of the air pipe of the suction assembly is connected to the expansion member, and the other end is connected to the air inlet through a sealing plug.

[0017] In some embodiments, the air inlet is flared and the side walls are rounded; the bottom surface of the air inlet is a sloping surface.

[0018] Thirdly, the present invention provides a testing method, a method for performing tests using the aforementioned testing system, comprising the following steps:

[0019] Step S1, Test Preparation: Connect the air inlet of the floor scrubber to the test device in a sealed manner using the suction assembly;

[0020] Step S2, Performance Test: Turn the floor scrubber into cleaning mode and continuously extract the air from the expansion unit;

[0021] Step S3, Performance Judgment: Based on the pressure difference between the pressure extracted by the floor scrubber and the supply pressure of the pressure stabilizing component, the suction power of the floor scrubber is judged to be qualified.

[0022] Step S4, Installation or Troubleshooting: If the result is qualified, install the device; if the result is unqualified, check and troubleshoot the problem, and then repeat step S1.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The testing device provided by this invention, by adopting a pressure equalization chamber expansion method, allows the floor scrubber to draw gas from the chamber during suction testing, and continuously replenishes the chamber with air through the air inlet, maintaining a balanced pressure inside the chamber. This ensures that the floor scrubber can always operate normally, thus achieving a true, stable, and continuous pressure testing effect. It solves the problem that the short negative pressure testing time of the floor scrubber makes it impossible to verify and record the pressure under a continuous and stable state of the blower, and also solves the quality hazard problem of the blower's rapid temperature rise during the negative pressure testing process. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of the testing device of the present invention;

[0027] Figure 2 This is a top view of the testing device of the present invention;

[0028] Figure 3 This is a side view of the testing device of the present invention;

[0029] Figure 4 This is a three-dimensional structural schematic diagram of the testing device of the present invention;

[0030] Figure 5 This is a cross-sectional view of the floor brush assembly of the floor scrubber in the test system of this invention.

[0031] In the diagram: 1. Air inlet; 2. Pressure equalization box; 3. Display; 4. Spare parts box; 5. Control box; 6. Electrical control box; 7. Air pipe; 8. Sealing plug. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0033] like Figures 1-4As shown, the present invention provides a testing device, including an expansion component that stores gas inside, with the air inlet 1 of the device under test connected to the inside of the expansion component to continuously extract gas during test operation; it also includes a pressure stabilizing component disposed on the expansion component, which can provide supplementary gas to the expansion component when the device under test continuously extracts gas from the expansion component to ensure the gas pressure balance inside the expansion component.

[0034] It should be noted that in this embodiment, the device to be tested is a floor scrubber; the following description uses a floor scrubber as an example. Of course, this testing device can also be used for other devices used for sealing tests and is not limited to floor scrubbers.

[0035] The testing device provided by this invention, by adopting a pressure equalization chamber expansion method, allows the floor scrubber to draw gas from the chamber during suction testing, and continuously replenishes the chamber with air through the air inlet, maintaining a balanced pressure inside the chamber. This ensures that the floor scrubber can always operate normally, thus achieving a true, stable, and continuous pressure testing effect. It solves the problem that the short negative pressure testing time of the floor scrubber makes it impossible to verify and record the pressure under a continuous and stable state of the blower, and also solves the quality hazard problem of the blower's rapid temperature rise during the negative pressure testing process.

[0036] like Figure 1 As shown, the expansion component includes a pressure equalization chamber 2, a pressure sensor, and a control component. The pressure sensor is installed inside the pressure equalization chamber 2 for pressure monitoring; the control component is electrically connected to the pressure sensor.

[0037] Furthermore, the air inlet 1 of the floor scrubber is connected to the inner cavity of the pressure equalization box 2 via an air extraction assembly, and the pressure stabilizing assembly is located on the side of the pressure equalization box 2 away from the air extraction assembly. In other words, when the air extraction assembly is connected to the front of the pressure equalization box 2, the pressure stabilizing assembly is located on the rear of the pressure equalization box 2.

[0038] As an optional embodiment of the present invention, the pressure stabilizing component includes an air inlet located on the side wall of the pressure equalization chamber 2. This air inlet is a fixed-value air inlet, capable of replenishing air according to the suction speed of the floor scrubber within the pressure equalization chamber 2, thereby ensuring stable pressure within the pressure equalization chamber 2.

[0039] Specifically, the specifications of the air inlet are designed according to the suction capacity of the floor scrubber. It needs to be compatible with the suction capacity of the floor scrubber to ensure that when the floor scrubber sucks the gas in the pressure equalization box 2, it can replenish the pressure equal to the amount of gas in the pressure equalization box 2 in a timely manner, thereby ensuring the stability of the air pressure in the box.

[0040] In another optional embodiment of the present invention, a pressure regulating component for adjusting the amount of replenished air is provided on the air inlet. The pressure regulating component can be provided to achieve more control modes and functions. Specifically, the pressure regulating component can be a pressure regulating valve or a flow meter.

[0041] Furthermore, in this embodiment, the control component includes a display 3 and a computing module, and the computing module is electrically connected to both the display 3 and the pressure sensor.

[0042] Furthermore, the testing device is mounted on a mobile vehicle, such as a mobile trolley; the testing device also includes a spare parts box 4, an operation box 5, and an electrical control box 6, with the computing module located inside the electrical control box 6.

[0043] Furthermore, the expansion unit and the floor scrubber are connected via a suction assembly.

[0044] It should be noted that, in this invention, as Figures 1-4 As shown, the suction assembly includes an air tube 7 and a sealing plug 8. The sealing plug 8 is made of silicone material.

[0045] like Figures 1-5 As shown, the present invention provides a testing system including a floor scrubber and a testing device for testing the sealing performance of the floor scrubber. When conducting the sealing performance test of the floor scrubber, the air inlet 1 of the floor scrubber is connected to the testing device through a suction assembly.

[0046] like Figure 5 As shown, in some embodiments, the floor scrubber includes a floor brush assembly, with an air inlet 1 disposed on the floor brush assembly; one end of the air pipe 7 of the suction assembly is connected to the expansion component, and the other end is connected to the air inlet 1 through a sealing plug 8.

[0047] To improve sealing and ensure the tightness of the connection between the sealing plug 8 and the air inlet 1, the air inlet 1 is flared and the two side walls are rounded transition structures; the bottom surface of the air inlet 1 is a sloping structure.

[0048] It should be noted here that...

[0049] The testing system of this invention can truly reflect the performance of the floor scrubber under actual use conditions, ensuring that the whole machine can still operate normally under long-term working and testing conditions, achieving stable test pressure values, and better reflecting the true state of the product.

[0050] Based on the study of the pressure equalization box principle in the automotive industry, this invention has developed a box called the pressure equalization box to expand the air inlet of the whole machine. This changes the air inlet of the floor scrubber from drawing in negative pressure to drawing in the volume of gas inside the pressure equalization box, thereby achieving the purpose of expanding the volume of the floor scrubber. Finally, a pressure sensor is used to display the equal pressure value inside the pressure equalization box in real time, so as to determine the suction power of the whole machine and ensure the performance of the whole machine.

[0051] After developing the pressure equalization box 2, this invention also improved the structure of the floor scrubber, specifically:

[0052] ① Firstly, based on the product's structure, the air inlet 1 of the floor scrubber needs to be completely sealed before being introduced into the pressure equalization box 2. However, due to the unique structure of the floor scrubber's brush assembly air intake and the presence of other components nearby, it is impossible to completely seal the air inlet 1 before operating the scrubber. Therefore, this invention eliminates the right-angle structure on both sides of the air inlet 1 of the brush assembly, adopting a φ24mm arc design. This ensures that the silicone plug fits perfectly against the side, making installation easier and more efficient. Furthermore, the 25° inclined plane design at the bottom of the air inlet 1 allows the silicone plug to be inserted more tightly and with greater compression as it is inserted, ensuring a complete seal at the air inlet.

[0053] ②Since the roller brush assembly of the floor scrubber is driven by a geared motor assembly, and the motor gearbox needs to recognize the load before it can operate, the roller brush assembly must be removed during the performance testing of the floor scrubber in order to block the air inlet for verification. Therefore, the traditional program recognition mode needs to be modified so that after the floor scrubber recognizes the no-brush protection during operation, it can enter the no-brush operation mode by pressing the function key three times in a row to complete the no-brush test.

[0054] Based on pressure drop standards and the suction power of floor scrubbers (8kPa-15kPa), the volume of the pressure equalization chamber (460mm x 460mm x 250mm) is designed. An air inlet (φ9.5mm) is located on the back of the chamber, and a pressure sensor is installed on the side to display the pressure inside the chamber in real time. Under the action of the pressure equalization chamber, the air inlet continuously replenishes gas while the floor scrubber extracts pressure from the chamber. A continuous and stable pressure difference is formed between the pressure extracted by the floor scrubber and the pressure supplied by the air inlet (this pressure difference can be standardized and stabilized through subsequent testing). The suction power of the floor scrubber is then judged based on this pressure difference. This method ensures continuous and stable operation of the floor scrubber, thereby testing the stable pressure value of the floor scrubber and compensating for the unstable data obtained by measuring the highest negative pressure value in the industry.

[0055] This invention provides a testing method, a method for conducting tests using a testing system, comprising the following steps:

[0056] Step S1, Test Preparation: Connect the air inlet 1 of the floor scrubber to the test device in a sealed manner through the suction assembly;

[0057] Step S2, Performance Test: Turn the floor scrubber into cleaning mode and continuously extract the air from the expansion unit;

[0058] Step S3, Performance Judgment: Based on the pressure difference between the pressure extracted by the floor scrubber and the supply pressure of the pressure stabilizing component, the suction power of the floor scrubber is judged to be qualified.

[0059] Step S4, Installation or Troubleshooting: If the result is qualified, install the device; if the result is unqualified, check and troubleshoot the problem, and then repeat step S1.

[0060] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A testing device for testing the sealing performance of a floor scrubber, characterized in that, The device includes an expansion chamber containing internal gas, with the air inlet of the device under test connected to the expansion chamber to continuously extract gas during testing. It also includes a pressure stabilizing component mounted on the expansion chamber, which provides supplementary gas to the expansion chamber to maintain pressure balance as the device under test continuously extracts gas from it. The expansion chamber includes a pressure equalization chamber, a pressure sensor, and a control component. The pressure sensor is located inside the pressure equalization chamber for pressure monitoring. The control component is electrically connected to the pressure sensor. The pressure stabilizing component includes a gas inlet on the side wall of the pressure equalization chamber. The air inlet of the device under test is connected to the inner cavity of the pressure equalization chamber via an extraction component. The pressure stabilizing component is located on the side of the pressure equalization chamber away from the extraction component. The gas inlet is equipped with a pressure regulating component for adjusting the amount of supplementary gas.

2. The testing apparatus according to claim 1, characterized in that, The control component is electrically connected to the pressure sensor.

3. The testing apparatus according to claim 2, characterized in that, The specifications of the air inlet are adapted to the suction capacity of the device under test.

4. The testing apparatus according to claim 1, characterized in that, The control component includes a display and a computing module, the computing module being electrically connected to both the display and the pressure sensor.

5. The testing apparatus according to claim 1, characterized in that, The expansion component and the device under test are connected via a suction assembly.

6. The testing apparatus according to claim 5, characterized in that, The suction assembly includes an air tube and a sealing plug.

7. A testing system, characterized in that, The system includes a floor scrubber and a testing apparatus as described in any one of claims 1-6 for performing a sealing test on the floor scrubber, wherein when the sealing test is performed on the floor scrubber, the air inlet of the floor scrubber is connected to the testing apparatus via a suction assembly.

8. The testing system according to claim 7, characterized in that, The floor scrubber includes a floor brush assembly, and the air inlet is located on the floor brush assembly; one end of the air pipe of the suction assembly is connected to the expansion component, and the other end is connected to the air inlet through a sealing plug.

9. The testing system according to claim 8, characterized in that, The air inlet is flared, and the two side walls have a rounded transition structure; the bottom surface of the air inlet is a sloping structure.

10. A testing method, characterized in that, The method for conducting tests using the test system as described in any one of claims 7-9 includes the following steps: Step S1, Test Preparation: Connect the air inlet of the floor scrubber to the test device in a sealed manner using the suction assembly; Step S2, Performance Test: Turn the floor scrubber into cleaning mode and continuously extract the air from the expansion unit; Step S3, Performance Judgment: Based on the pressure difference between the pressure extracted by the floor scrubber and the supply pressure of the pressure stabilizing component, the suction power of the floor scrubber is judged to be qualified. Step S4, Installation or Troubleshooting: If the result is qualified, install the device; if the result is unqualified, check and troubleshoot the problem, and then repeat step S1.

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