Device and method for removing test waste liquid condensate at bottom of salt spray box

Abstract

The invention discloses a device and a method for removing test waste liquid condensate at the bottom of a salt spray box. A salt spray test box body is used for containing a salt solution for a salt spray test; the weighing sensor is embedded in a bottom plate of the salt spray test box body and is used for sensing and measuring the weight change on the bottom plate in the salt spray test; the telescopic part is mounted on a bottom plate of the salt spray test box body, the telescopic part is composed of a fixed part and a telescopic part, and the telescopic part can reciprocate on the fixed part; the cleaning brush is connected with the telescopic part, scrapes and brushes the bottom plate during reciprocating motion, and then is matched with a discharging opening reserved in the bottom plate to clean waste residues and waste water on the bottom plate; the power-on and power-off processes of the electromagnetic valve are used for controlling the telescopic part to reciprocate; the control system is electrically connected with the electromagnetic valve and used for controlling the electromagnetic valve to be powered on and powered off so as to control the cleaning brush to conduct cleaning operation according to a preset mode. The heating efficiency of the heating device at the bottom of the test box and the uniformity of the temperature in the test box can be fully ensured, and the test result is real and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of salt spray test testing method, in particular to a kind of removal device and method that can be cleaned test tank bottom waste liquid condensate periodically after salt spray test ends or during test. BACKGROUND

[0002] Salt spray test is used to test and verify the salt spray corrosion resistance of parts. During the test, the test salt solution is configured according to the standard requirements, and the heating device of the test tank is started to ensure that the inside of the test tank is in a constant temperature condition during the test, and the temperature uniformity of each area inside the test tank is ensured. However, since the heating device of the test tank is at the bottom of the tank, improper disposal of the waste liquid generated during the test may affect the temperature transfer.

[0003] There are generally two ways to dispose of the waste liquid generated during the salt spray test. One is to provide a certain amount of pure water at the bottom of the salt spray test tank to dilute the settled salt solution and rust stains. When a certain amount of waste liquid is accumulated, the external valve is opened, and the waste liquid is manually and once discharged. Then the valve is closed, and pure water is prepared for the test again. This method is more troublesome, and both liquid discharge and pure water preparation require manual intervention. The other is to directly connect the waste liquid discharge outlet at the bottom of the test tank to the outside drain. In this way, there is no need to prepare pure water at the bottom of the test tank, and the settled salt solution and rust stains during the test can be directly discharged through the waste liquid discharge outlet. However, in actual operation, when the salt spray test period is long, a certain amount of waste liquid cannot be discharged in time, and the waste liquid is accelerated to condense into slag at the bottom of the tank due to internal heating. Due to the uncertainty of the location and thickness of the condensed waste slag, the heat transferred from the heating device at the bottom of the tank to the inside of the tank is not the same, resulting in uneven temperature inside the tank and affecting the accuracy of the test results. At the same time, it also increases the heating power consumption of the heating device, wasting resources. Manual removal of the condensed waste slag after the test is completed is difficult due to the long condensation time and strong adhesion, and it may also leave marks on the bottom of the test tank, affecting the appearance of the test tank. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a salt spray tank bottom test waste liquid condensate removal device and method, which can fully ensure the heating efficiency of the heating device at the bottom of the test tank and the uniformity of the temperature inside the test tank, and ensure the authenticity and reliability of the test results. At the same time, it reduces the waste of test resources and is energy-saving and environmentally friendly.

[0005] The present application is implemented according to the following technical solutions:

[0006] In a first aspect, the present application provides a salt spray tank bottom test waste liquid condensate removal device, comprising:

[0007] A salt spray test tank is used to hold a salt solution for salt spray test.

[0008] at least one weighing sensor embedded in the bottom plate of the salt spray test chamber for sensing the weight change on the bottom plate during the salt spray test;

[0009] a telescopic component installed on the bottom plate of the salt spray test chamber, the telescopic component being composed of a fixed part and a telescopic part, the telescopic part being capable of reciprocating on the fixed part;

[0010] a cleaning brush connected to the telescopic part for scraping the bottom plate during reciprocation and further cooperating with the preformed drain on the bottom plate to clean the waste and wastewater on the bottom plate;

[0011] a solenoid valve, the process of being powered and de-powered of which is used to control the reciprocation of the telescopic part;

[0012] a control system electrically connected to the solenoid valve for controlling the power and de-power of the solenoid valve and further controlling the cleaning brush to perform the cleaning operation according to the preset mode.

[0013] In some embodiments, the cleaning brush includes an upper cleaning water pipe and a lower cleaning brush body, and the cleaning brush is capable of adding pure water to the bottom plate of the salt spray test chamber during reciprocation to dissolve the waste and accelerate the cleaning.

[0014] In some embodiments, the cleaning brush body is in contact with the corresponding side plate of the salt spray test chamber at both ends of the length direction of the cleaning brush body, and at least one through hole is arranged on the cleaning brush body to avoid the condensation of the solution accumulated between the cleaning brush and the shielding component of the telescopic component and the solenoid valve during non-use.

[0015] In some embodiments, the cover plate is inclined between the side plate and the bottom plate of the salt spray test chamber, and the bottom of the cover plate is arranged between the fixed part of the telescopic component and the cleaning brush, and the telescopic part of the telescopic component extends from the cover plate; the cover plate is configured to protect the telescopic component and the solenoid valve from corrosion on one hand, and the atomized salt solution can slide down along the cover plate on the other hand, avoiding the accumulation of the solution.

[0016] In some embodiments, the drain is located at the center of the bottom plate of the salt spray test chamber, and a set of telescopic components, cleaning brushes and solenoid valves are arranged on both sides of the bottom plate of the salt spray test chamber, and a plurality of weighing sensors are embedded on the bottom plate between the two cleaning brushes, and when the weight M sensed by the weighing sensor exceeds the upper limit M0 of the weight, the control system starts the telescopic components on both sides to perform the cleaning function simultaneously.

[0017] In some embodiments, the cleaning mode of the cleaning brush is: a priority setting with a cycle start minimum execution time, that is, once the cycle cleaning work is started, the reciprocating motion cleaning work is executed for at least N times, then the weight of the bottom quality of the box is weighed after the cleaning device returns to the original position, if the perceived weight M is still greater than the upper limit weight M0, the next N times of cycle operation is started; if the perceived weight M is less than the upper limit weight M0, the cycle is stopped.

[0018] In some embodiments, the weighing sensor adopts a voltage type sensor, the perceived weight change△m can be converted into a voltage output△v; the perceived maximum weight is deduced from the maximum voltage value recorded by the control system, and the weight is counted into the control system as the perceived upper limit weight M0.

[0019] In some embodiments, the fixed part in the telescopic part is a gas cylinder, and the telescopic part is a telescopic rod, and the gas cylinder is used to push and retract the telescopic rod.

[0020] In the second aspect, the application provides a salt mist chamber bottom test waste liquid condensate cleaning method, which is implemented by using the above-mentioned salt mist chamber bottom test waste liquid condensate cleaning device.

[0021] The control system is a PLC controller, X0 is a signal of the mass M of the bottom surface of the box weighed in the test process, Y0 represents a solenoid valve, T0, T1 and T2 are three delay timers, and M0 is an intermediate relay;

[0022] If the perceived weight M is greater than the upper limit weight M0 in the test process, X0 is started, T0 is powered on to start timing, M0 is powered on to conduct, and T2 starts timing; after T0 is timed for 1 s, T0 is turned on, then T1 is powered on to start timing, Y0 is powered on at the same time, the telescopic part is pushed out by the power-on of the solenoid valve; after T1 is timed for 2 s, T1 changes from the original closing to opening, T0 is no longer powered on, at this time, T0 of the fourth row also returns to the normal opening, T1 is powered off, Y0 is not powered on, the telescopic part is retracted by the power-off of the solenoid valve; the cycle time of the above is 3 s.

[0023] After T1 is powered off, T1 of the first row returns to the normally closed state, T0 is normally powered on because M0 is set to 1, and the above steps are repeated; after T2 is timed for 30 s, that is, after the above cycle is repeated for 10 times, T2 is timed to 30 s, T2 of the first row changes to the normally open state, and T2 of the third row changes to the normally closed state, and M0 is reset.

[0024] If the mass M of the condensate on the bottom of the test box after the scraping brush is still greater than M0, X0 is started again, T0 is powered on again, and the cycle cleaning work is repeated;

[0025] If the weight M of the condensate on the bottom of the test box is less than M0, the cleaning work is stopped.

[0026] The application has the following beneficial effects:

[0027] 1. The device has simple structure, low construction and maintenance cost.

[0028] 2. The device has simple operation method, can be periodically operated, and does not need to manually remove the condensed waste residue after each test, reduces the man-machine fatigue of the tester, and improves the test efficiency.

[0029] 3. The device has strong practicability, when the salt spray test is performed on the coating parts, hydraulic parts and other parts, the waste residue is condensed at the bottom of the test box, which causes uneven temperature transfer in the test box and waste of resources. The device and method can effectively remove the waste residue at the bottom of the test box, ensure the reliability of the test result, and save resources.

[0030] 4. The device does not occupy the test space, removes the waste residue regularly, avoids overload work of the heating device, prolongs the service life of the test equipment, and reduces the fault maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are part of the present application, serve to further understand the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, but do not constitute improper limitation on the present application. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0032] In the drawings:

[0033] Figure 1 Structure diagram of a salt spray box bottom test waste liquid condensate removing device of the present application Figure 1 ;

[0034] Figure 2 Structure diagram of a salt spray box bottom test waste liquid condensate removing device of the present application Figure 2 ;

[0035] Figure 3 Structure diagram of a salt spray box bottom test waste liquid condensate removing device of the present application Figure 3 ;

[0036] Figure 4 Control system display interface diagram of the present application

[0037] Figure 5 Control principle diagram of the present application

[0038] The drawings are identified as follows: 101-salt spray test box; 102-discharge port; 201-weighing sensor; 301-cover plate; 302-solenoid valve; 303-air cylinder; 304-telescopic rod; 305-removing brush.

[0039] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concepts of the present application to a skilled person in the art. DETAILED DESCRIPTION

[0040] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0041] In the description of the present application, it should be noted that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inner”, “outer” and the like indicate the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connecting”, “connection” should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] As shown in Figure 1 , Figure 2 , Figure 3 A salt mist chamber bottom test waste liquid condensate removal device, including a salt mist test chamber 101, a weighing sensor 201, a telescopic component, a removal brush 305, a solenoid valve 302 and a control system; the salt mist test chamber 101 is used to hold the salt solution for salt mist test; the weighing sensor 201 is embedded in the bottom plate of the salt mist test chamber 101, used to sense and measure the weight change on the bottom plate in the salt mist test; the telescopic component is installed on the bottom plate of the salt mist test chamber 101, the telescopic component is composed of a fixed part and a telescopic part, the telescopic part can reciprocate on the fixed part; the removal brush 305 is connected with the telescopic part, and scrapes the bottom plate in reciprocating motion, and then cooperates with the exhaust port 102 reserved on the bottom plate to remove the waste residue and waste water on the bottom plate; the process of the solenoid valve 302 being powered and losing power is used to control the reciprocating motion of the telescopic part; the control system is electrically connected with the solenoid valve 302, used to control the solenoid valve 302 to be powered and lose power, and then control the removal brush 305 to perform removal operation according to the preset mode.

[0044] Further, the fixed part in the telescopic part is a cylinder 303, and the telescopic part is a telescopic rod 304. The cylinder 303 is used to push and retract the telescopic rod 304, and the telescopic rod 304 pushes the cleaning brush 305 to move back and forth on the bottom of the test chamber. The telescopic rod 304 is made of synthetic resin material to avoid corrosion.

[0045] It should be noted that the load cell 201 is embedded in the bottom of the test chamber, and is used to sense the weight change on the bottom surface of the chamber in the salt spray test. The number and position of the load cell 201 are not fixed, and can be determined according to the volume and bottom size of the test chamber. The protrusion of the load cell is for highlighting, and in actual use, the place is parallel to the bottom surface of the chamber.

[0046] Further, the cover plate 301 is inclined between the side plate and the bottom plate of the salt spray test chamber 101, and the bottom of the cover plate 301 is arranged between the cylinder 303 and the cleaning brush, and the telescopic rod 304 extends from the cover plate 301. The cover plate 301 is configured to protect the telescopic part and the electromagnetic valve 302 from corrosion, and the atomized salt solution can slide down along the cover plate 301 to avoid solution accumulation.

[0047] The specific structure of the cleaning brush is further described below.

[0048] As shown in Figure 1 , Figure 2 , Figure 3 , the cleaning brush 305 is used to clean the waste on the bottom of the test chamber. The cleaning brush 305 is made of synthetic resin material to avoid corrosion. The cleaning brush 305 includes an upper cleaning water pipe and a lower cleaning brush body. The cleaning brush 305 can add pure water to the bottom plate of the salt spray test chamber 101 during reciprocating movement to dissolve the waste and accelerate cleaning. The cleaning brush body scrapes and brushes the waste and waste liquid on the bottom of the test chamber during reciprocating movement.

[0049] Further, the cleaning brush body is in contact with the side plates of the salt spray test chamber 101 at both ends in the length direction, and at least one through hole is arranged on the cleaning brush body to avoid the accumulation of the solution settled during non-use between the cleaning brush and the shielding part (the cover plate 301 described above) protecting the cylinder 303 and the electromagnetic valve 302.

[0050] Further, as shown in Figure 1 , Figure 2 , Figure 3As shown, the discharge port 102 is located at the center of the bottom plate of the salt spray test chamber 101, and each side of the bottom plate of the salt spray test chamber 101 is provided with a set of telescopic components, a cleaning brush 305 and an electromagnetic valve 302. A plurality of weighing sensors 201 are embedded on the bottom plate between the two cleaning brushes 305. When the weight M sensed by the weighing sensor 201 exceeds the upper limit of the weight M0, the control system starts the cylinders 303 on both sides to simultaneously perform the cleaning function.

[0051] Further, the cleaning mode of the cleaning brush is as follows: a priority setting of a cycle start minimum execution time is set, that is, once the cycle cleaning work is started, the reciprocating cleaning work is performed for at least N times, and then the weight of the bottom of the chamber is weighed after the cleaning device returns to the original position. If the sensed weight M is still greater than the upper limit of the weight M0, the next N times of cycle operation is continued to be started. If the sensed weight M is less than the upper limit of the weight M0, the cycle is stopped.

[0052] Further, the weighing sensor 201 adopts a voltage type sensor, and the sensed weight change Δm can be converted into a voltage output Δv. The maximum weight sensed is reversely deduced from the maximum voltage value recorded by the control system, and the weight is taken into the control system as the sensed upper limit of the weight M0.

[0053] As known from the above, the device is suitable for cleaning the test waste slag on the bottom of the chamber after the salt spray test or during the test. The weighing sensor senses the weight change of the bottom of the chamber to give a signal to the electromagnetic valve, and the electromagnetic valve controls the cylinder to drive the cleaning brush to clean the waste slag on the bottom of the chamber. The device adopts a symmetrical design, which can reduce the overall size of the device, and the cleaning area covers the entire bottom of the chamber.

[0054] The PLC control program matched with the device can avoid the influence of the frequent change of the weight during the movement of the cleaning brush due to the brush passing through the weighing sensor or the back-and-forth circulation of the bottom waste liquid. A priority setting of a cycle start minimum execution time is set. That is, once the cycle cleaning work is started, the reciprocating cleaning work is performed for at least N times, and then the weight of the bottom of the chamber is weighed after the cleaning device returns to the original position. If the sensed weight M is still greater than the upper limit of the weight M0, the next N times of cycle operation is continued to be started. If the sensed weight M is less than the upper limit of the weight M0, the cycle is stopped. The priority setting is 10 times, which is not fixed, and can be determined according to the amount of the condensate of the test chamber.

[0055] As shown in Figure 4 , Figure 5 The application also provides a method for cleaning the condensate of the test waste liquid on the bottom of the salt spray chamber, and the specific content is as follows:

[0056] (1) First, run the salt spray test for 48h or 96h (both are common test cycle length) under the condition that the test conditions are met, and measure the weight change of the settled liquid on the bottom of the box during the test by the weighing sensor. The weighing sensor uses a voltage sensor, and the sensed weight change Am can be converted into voltage output Av. The maximum voltage value recorded from the control system is used to deduce the maximum weight M0 sensed, which is counted into the control system as the upper limit of the sensed weight.

[0057] (2) After the upper limit M0 of the weight is set, the test is normally started according to the agreed conditions, and the weighing sensor normally measures the weight of the settled liquid on the bottom of the box or the weight of the condensed waste slag after a longer test period. The sensed weight is transmitted to the control system in the form of Figure 4 When the weight exceeds the upper limit M0 of the weight, the cleaning function is started, and the waste liquid and waste slag on the bottom of the box are cleaned. In the case of multiple weighing sensors, the minimum sensed weight is taken, that is, as soon as the sensed weight of one weighing sensor exceeds M0, the cleaning function is started.

[0058] (3) The control program of the cleaning device is shown in Figure 5 , and the PLC program is used to control the cleaning work. X0 is the signal of the mass M of the box during the test, Y0 represents the electromagnetic valve, T0, T1 and T2 are three delay timers, and M0 is an intermediate relay; if the sensed weight M is greater than the upper limit M0 of the weight during the test, X0 is started, T0 is powered on to start timing, M0 is powered on to conduct, and T2 starts timing; after T0 counts for 1s, T0 is turned on, then T1 is powered on to start timing, Y0 is powered on, and the electromagnetic valve is powered on to make the telescopic part push out; after T1 counts for 2s, T1 changes from the original closed state to the open state, T0 is no longer powered on, at this time, T0 of the fourth row also returns to the normal open state, T1 loses power, Y0 loses power, the electromagnetic valve loses power, and the telescopic part is recovered; the cycle time of the above is 3s;

[0059] After T1 loses power, T1 of the first row returns to the normal closed state, and since M0 is set to 1, T0 is normally powered on to repeat the above steps; after T2 counts for 30s, that is, after 10 times of the above cycle, T2 counts to make T2 of the first row become normally open, and T2 of the third row becomes normally closed, and M0 is reset; if the mass M of the condensed matter on the bottom of the test box after the brush is scraped is still greater than M0, X0 is started again, T0 is powered on again, and the cleaning work is repeated; if the weight M of the condensed matter on the bottom of the test box is less than M0, the cleaning work is stopped.

[0060] The interlocking of T0 and T1, the two delay timers, makes the cylinder repeatedly push out and recover, and T2 controls the cleaning work to be performed at least 10 times once the cycle is started, and then it is judged whether the weight of the condensed matter on the bottom of the box meets the requirements, so as to realize the reciprocating movement of the cleaning brush to clean the waste slag.

[0061] From the above, the present application provides a device and method for automatically removing waste liquid condensate from the bottom of a test chamber during or after a salt spray test. The device is installed at the bottom of the test chamber and includes a weighing sensor (of any number) for sensing and weighing the waste residue that has been deposited at the bottom of the test chamber for a long time and has condensed into a solid. The device then transmits a signal to the control system of the test chamber. The control system receives the signal and determines whether the weight exceeds a set requirement M0. If the weight exceeds the set requirement M0, the device starts the cleaning brush function. The cleaning brush is equipped with a water spray hole, and the entire cleaning device is made of composite resin material. The water spray dissolves the waste residue, and the cleaning brush moves back and forth to remove the dissolved waste residue from the bottom of the test chamber. The waste residue is then discharged from the waste outlet, ensuring that there is no waste residue condensation at the bottom of the test chamber to block the temperature transfer and ensure the uniformity of the temperature in the internal space of the test chamber during the test.

[0062] In summary, the present application achieves the following functions and effects:

[0063] 1) The device structure and method can be used to remove waste liquid condensate from the bottom of a salt spray test chamber, ensuring normal heat transfer in the test chamber and ensuring the uniformity of the temperature in the test chamber. The design and control of the device are simple and can be implemented to a high degree.

[0064] 2) The device uses a miniature weighing sensor to sense the weight change at the bottom of the test chamber, which has high precision, reliable control, and better cleaning effect.

[0065] 3) The overall size of the device and the number and position of the miniature weighing sensor can be determined according to the volume and bottom size of the salt spray test chamber. Generally, salt spray tests are conducted in the middle and upper space of the test chamber. The device is set at the upper position of the bottom of the salt spray chamber, which can ensure the waste residue removal function and does not affect the salt spray test of the test chamber.

[0066] 4) The cleaning brush of the device includes a water addition and waste residue cleaning function, which can accelerate the removal of waste residue from the bottom of the test chamber and has high practicality.

[0067] 5) The device is equipped with a PLC program, which can avoid the change of the mass caused by the device passing through the weighing sensor or the back and forth flow of the waste residue mixture, affecting the progress of the entire cycle. Once the cycle is started, the priority of the cycle is set to a certain number of times, and then the mass of the waste residue at the bottom is compared and judged, which can ensure the quality and effectiveness of the cycle cleaning work.

[0068] 6) The moving parts of the device are made of synthetic resin material, which can avoid corrosion of the cleaning device itself by salt spray.

[0069] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

[0070] In addition, those skilled in the art will appreciate that the features described herein with respect to some embodiments can be combined in different embodiments, while still falling within the scope of the present application and forming different embodiments. For example, in the above embodiments, those skilled in the art can use the features in a combined manner according to the known technical solutions and the technical problems to be solved by the present application.

[0071] The above description is only the preferred embodiments of the present application, not any form of limitation to the present application, although the present application has been disclosed as above with the preferred embodiments, however, not to define the present application, any skilled in the art of the patent can make some changes or modifications as equivalent embodiments with the above prompted technical content without departing from the scope of the technical solutions of the present application, but as long as it does not depart from the content of the technical solutions of the present application, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application, still belongs to the scope of the present application.

Claims

1. A device for removing condensate from the bottom of a salt spray chamber, characterized in that, include: The salt spray test chamber is used to hold the salt solution used in salt spray tests. At least one weighing sensor is embedded in the bottom plate of the salt spray test chamber to sense and measure the weight change on the bottom plate during the salt spray test; A telescopic component is installed on the bottom plate of the salt spray test chamber. The telescopic component consists of a fixed part and a telescopic part, and the telescopic part can reciprocate on the fixed part. The cleaning brush, connected to the telescopic part, scrapes the bottom plate in reciprocating motion, and then works with the pre-reserved discharge port on the bottom plate to remove waste residue and wastewater from the bottom plate; The solenoid valve, whose energization and de-energization processes are used to control the reciprocating motion of the telescopic part; The control system is electrically connected to the solenoid valve and is used to control the solenoid valve to gain or lose power, thereby controlling the cleaning brush to perform cleaning operations according to a preset mode.

2. The device for removing condensate from the bottom of a salt spray chamber as described in claim 1, characterized in that: The cleaning brush includes an upper cleaning water pipe and a lower cleaning brush body. During the reciprocating motion of the cleaning brush, pure water can be added to the bottom plate of the salt spray test chamber to dissolve waste residue and accelerate cleaning.

3. The device for removing condensate from the bottom of a salt spray chamber as described in claim 2, characterized in that: The cleaning brush body contacts the side plates of the corresponding salt spray test chamber at both ends along its length. The cleaning brush body is provided with at least one through hole to prevent the settled solution from accumulating and condensing between the cleaning brush and the shielding component behind it that protects the telescopic component and the solenoid valve when not in use.

4. The device for removing condensate from the bottom of a salt spray chamber as described in claim 1, characterized in that: The cover plate leans against the side plate and bottom plate of the salt spray test chamber, and the bottom of the cover plate is arranged between the fixing part of the telescopic component and the cleaning brush. The telescopic part of the telescopic component extends out from the cover plate. The cover plate is constructed to protect the telescopic component and the solenoid valve from corrosion on the one hand, and to allow the atomized salt solution to slide down the cover plate to avoid solution accumulation on the other hand.

5. The device for removing condensate from the bottom of a salt spray chamber as described in claim 1, characterized in that: The outlet is located at the center of the bottom plate of the salt spray test chamber. Each side of the bottom plate of the salt spray test chamber is equipped with a set of telescopic components, a cleaning brush and a solenoid valve. Multiple weighing sensors are embedded in the bottom plate between the two cleaning brushes. When a weighing sensor detects that the weight M exceeds the upper limit of weight M0, the control system activates the telescopic components on both sides to perform the cleaning function simultaneously.

6. The device for removing condensate from the bottom of a salt spray chamber as described in claim 1, characterized in that, The cleaning brush has the following cleaning mode: it is set with a priority setting for the minimum execution time of the cycle start, that is, once the cycle cleaning work is started, it will perform the reciprocating motion cleaning work at least N times, and then after the cleaning device returns to its original position, the mass of the bottom of the box will be weighed. If the sensed weight M is still greater than the upper limit weight M0, the next N cycle operation will continue to start; if the sensed weight M is less than the upper limit weight M0, the cycle will stop.

7. The device for removing condensate from the bottom of a salt spray chamber as described in claim 6, characterized in that, The weighing sensor is a voltage-type sensor, and the sensed weight change Δm can be converted into a voltage output Δv. The maximum sensed weight is calculated by reversing the maximum voltage value recorded by the control system, and this weight is included in the control system as the upper limit of the sensed weight M0.

8. The device for removing condensate from the bottom of a salt spray chamber as described in claim 1, characterized in that: The fixed part of the telescopic component is a cylinder, and the telescopic part is a telescopic rod. The cylinder is used to push and retract the telescopic rod.

9. A method for removing condensate from the bottom of a salt spray chamber, comprising using the condensate removal device for removing condensate from the bottom of a salt spray chamber as described in any one of claims 1 to 8, characterized in that: The control system is a PLC controller. X0 is the signal of the mass M of the bottom surface of the box being weighed during the test. Y0 represents the solenoid valve. T0, T1 and T2 are three delay timers. M0 is an intermediate relay. If the sensed weight M > the upper limit M0 during the test, X0 is activated, T0 is energized and starts timing, M0 is simultaneously energized and conducts, and T2 starts timing; after T0 times for 1 second, T0 conducts, then T1 is energized and starts timing, Y0 is simultaneously energized, the solenoid valve is energized and the telescopic component is extended; after T1 times for 2 seconds, T1 changes from closed to open, T0 is no longer energized, at this time T0 in the fourth row also returns to normally open, T1 is de-energized, Y0 is not energized, the solenoid valve is de-energized and the telescopic component is retracted; the time for one cycle as above is 3 seconds; After T1 loses power, T1 in the first row returns to its normally closed state. Since M0 is set to 1, T0 is powered on normally and the above steps are repeated. After T2 times for 30 seconds, that is, after the above cycle is repeated 10 times, T2 times out, causing T2 in the first row to become normally open, and T2 in the third row to become normally closed, resetting M0. If the mass M of the condensate at the bottom of the test chamber after scraping is still greater than M0, then X0 is restarted and T0 is energized again to repeat the cleaning cycle. If the weight M of the condensate at the bottom of the test chamber is less than M0, then the cleaning operation should be stopped.

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