Adjustable load test box

Abstract

The invention relates to the technical field of load test boxes, and discloses an adjustable load test box. The filter comprises a case and a bottom plate suspended in the case, a filter mechanism is arranged in the case, the filter mechanism comprises a driving rack with a concave overall structure and a filter belt which is arranged on the driving rack and can perform circulating transmission, the driving rack can adjust the filter belt, and the filter belt is driven by the driving rack. The filter belt can filter dust and moisture in the air, and two sets of fans used for air entraining and air exhausting are arranged on the driving rack. The dust filtering and moisture filtering functions can be achieved while heat dissipation is guaranteed, so that the influence of moisture on internal elements is reduced, meanwhile, the single dust filtering mode can be adjusted according to needs, and the ventilation and heat dissipation effects are improved.

Description

Technical Field

[0001] The invention relates to the technical field of load test boxes, and in particular to an adjustable load test box. Background Art

[0002] Load test box is usually called load box or load cabinet. It is a kind of power load testing equipment, which is mainly used to load test power equipment such as generators, battery packs, power boards, etc., simulate the load of power equipment in actual application, and test the performance of power equipment. Since the load box will generate a lot of heat during operation, if the heat cannot be dissipated in time and effectively, it may cause equipment performance degradation or failure. Therefore, the load box is generally equipped with a heat dissipation mechanism, and its heat dissipation method is generally achieved through the conversion of airflow, and this heat dissipation method is usually called air cooling.

[0003] The principle of air cooling is to send outside air into the equipment and then discharge it, introducing outside cold air while discharging internal heat. However, when the equipment is in a humid environment or encounters the rainy season, this cooling method is also likely to bring moisture into the equipment. Moisture is more harmful to the components inside the load box. It will not only accelerate the corrosion of the power components, but also reduce the insulation performance of the air, causing the insulating materials in the power components to absorb moisture, resulting in reduced insulation resistance, thereby increasing leakage current, and in severe cases may cause insulation breakdown, causing electrical failures. Therefore, ensuring the normal heat dissipation of the load test box while suppressing the entry of external moisture has become an urgent problem to be solved in the existing load test box. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an adjustable load test box.

[0005] The present invention is implemented by the following technical scheme: a chassis and a bottom plate suspended in the chassis, a filtering mechanism is arranged in the chassis, the filtering mechanism includes a driving frame with a concave overall structure and a filter belt arranged on the driving frame and capable of cyclic transmission, the driving frame can adjust the filter belt, the filter belt can filter dust and moisture in the air, and the driving frame is provided with two groups of fans for air intake and exhaust respectively; The filter belt is composed of two filter screens of equal length and two hygroscopic belts of equal length. The two filter screens and the two hygroscopic belts are equidistantly distributed, and the positions of the two hygroscopic belts are respectively opposite to the two groups of fans. The hygroscopic belt is composed of two gauze nets and a sponge layer between the two gauze nets, so that the hygroscopic belt can absorb moisture in the air and ensure its own ventilation.

[0006] Preferably, the driving frame includes a front frame and a tail frame slidably installed in the chassis, a plurality of connecting rods are provided on the front frame and the tail frame, two driving rollers and four shaping rollers are provided on the front frame and the tail frame, a motor for driving the driving rollers to rotate is provided on the front frame, and the filter belt is arranged on the two driving rollers and in contact with the four shaping rollers.

[0007] Preferably, the chassis is provided with a concave opening, the front frame is provided with a concave sealing plate matched with the concave opening, and the concave sealing plate is provided with two handles, so that the entire filtering mechanism can be conveniently taken out of the chassis for maintenance.

[0008] Preferably, two pressing rollers distributed up and down are rotatably provided on the front frame and the tail frame, and the filter belt passes between the two pressing rollers, so that when the filter belt is transmitted, the two pressing rollers can assist in squeezing out water stains in the front frame.

[0009] Preferably, brush rollers are provided on the front frame and the tail frame, and the brush rollers are in contact with the filter belt, so that the brush rollers can clean the filter belt in transmission.

[0010] Preferably, the brush roller is rotatably connected to the front frame and the tail frame, and the brush roller and the pressure roller below are both provided with circular gears, and the two circular gears are meshed, so that the pressure roller can drive the brush roller to transfer in the opposite direction of the filter belt transmission.

[0011] Preferably, a material guide trough is provided at the bottom of the chassis, and the material guide trough is located directly below the pressure roller and the brush roller, so as to discharge the dust and water stains cleaned from the filter belt.

[0012] Preferably, the sponge layer is provided with a plurality of inclined perforations distributed in an array, so as to further improve the ventilation effect of the sponge layer without affecting the dehumidification property of the sponge layer.

[0013] Preferably, rotatable fixing frames are provided on both inner walls of the tail frame, the other ends of the two fixing frames are connected to the front frame, and the two sets of fans are fixedly connected to the corresponding fixing frames respectively.

[0014] Preferably, a power socket is provided on the inner wall of the chassis, and a power plug is provided on the tail frame, and the power plug is inserted into the power socket, so as to power the entire filtering mechanism and enable the entire filtering mechanism to be arranged in a modular form in the chassis.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The driving frame and the filter belt cooperate to form a filter mechanism with an overall concave structure, which can not only realize the dust and moisture filtering functions, so that the load test box does not need to worry about the influence of moisture, but also can switch the positions of the two moisture absorption belts, so that one of the moisture absorption belts can be dried with the help of the heat discharged by the load test box while the other moisture absorption belt is dehumidified, so that the two moisture absorption belts can be reused in turn without worrying about the problem of adsorption of humidity saturation. In addition, when the above functions are realized, the entire filter mechanism has a compact structure and will not occupy too much space in the load test box, and can also be easily taken out of the load test box for maintenance, thereby combining the advantages of strong functionality, small space occupation and easy maintenance. The drive rack can not only switch the positions of the two moisture absorption belts, but also adjust the filter belt so that the positions of the air inlet and outlet correspond to the filter screen. In this way, when used in drier seasons or areas, the load test box can be adjusted from dust and moisture filtering mode to single dust filtering mode, thereby increasing ventilation and further improving heat dissipation, thereby improving applicability; By arranging a brush roller and two pressure rollers on the driving frame, the filter screen on the filter belt can be cleaned and the hygroscopic belt can be dehydrated simultaneously when the positions of the two hygroscopic belts are switched. This not only ensures the ventilation of the filter screen and prevents it from being affected by dust, but also further improves the drying and reuse efficiency of the hygroscopic belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing the overall structure of the adjustable load test box of the present invention; Figure 2 This is a disassembled display diagram of the adjustable load test box of the present invention; Figure 3 It is an overall display diagram of the filtering mechanism in the adjustable load test box of the present invention; Figure 4 This is a disassembled display diagram of the filter mechanism in the adjustable load test box of the present invention; Figure 5 It is a front-view disassembled display diagram and a partial enlarged diagram of the driving frame in the filtering mechanism; Figure 6 The figure is a rear-view disassembled display of the driving frame in the filtering mechanism; Figure 7 It is a front-view plane cross-sectional display diagram of the adjustable load test box of the present invention; Figure 8 This is a layout diagram showing the filter belt, connecting rod, driving roller and shaping roller; Fig. 9 It is a layout diagram of the filter screen and moisture absorption belt in the filter belt and a partial enlarged display diagram; Fig.10It is a ventilation schematic diagram of the adjustable load test box of the present invention.

[0017] Description of main symbols: 1. Chassis; 2. Bottom plate; 3. Front frame; 4. Tail frame; 5. Connecting rod; 6. Driving roller; 7. Shaping roller; 8. Concave sealing plate; 9. Motor; 10. Worm; 11. Worm gear; 12. Filter belt; 121. Filter screen; 122. Moisture absorption belt; 1221. Gauze; 1222. Sponge layer; 13. Fixed frame; 14. Fan; 15. Pressing roller; 16. Brush roller; 17. Material guide trough; 18. Power plug. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Please combine Figures 1 to 10 , an adjustable load test box, comprising: a chassis 1 and a bottom plate 2 suspended in the chassis 1, the two ends of the bottom plate 2 are respectively fixedly connected to the front and rear inner walls of the chassis 1, because the bottom plate 2 is suspended in the chassis 1, so that it will not conflict with the filtering mechanism in the chassis 1, both sides of the chassis 1 are provided with heat dissipation holes, wherein the heat dissipation holes on the left are air inlets, and the heat dissipation holes on the right are air outlets, and a filtering mechanism is provided in the chassis 1, and the filtering mechanism includes a driving frame with a concave overall structure and a filter belt 12 arranged on the driving frame and capable of circulating transmission, the driving frame can adjust the filter belt 12, and the filter belt 12 can filter dust and moisture in the air, and the driving frame is provided with two groups of fans 14 for air intake and exhaust respectively; The filter belt 12 is composed of two equal-length filter screens 121 and two equal-length moisture-absorbing belts 122. The two filter screens 121 and the two moisture-absorbing belts 122 are evenly distributed, and the positions of the two moisture-absorbing belts 122 are respectively opposite to the two sets of fans 14. The moisture-absorbing belt 122 is composed of two gauze screens 1221 and a sponge layer 1222 between the two gauze screens 1221, so that the moisture-absorbing belt 122 can not only absorb moisture in the air, but also ensure its own ventilation. In addition, the sponge layer 1222 is provided with a plurality of inclined perforations distributed in an array. The inclined perforations allow the air to fully contact the sponge layer 1222 and also be discharged along the pores after contact, so that the ventilation effect can be further improved without affecting the dehumidification of the sponge layer 1222, thereby reducing the heat dissipation of the load test box. The driving frame can switch the positions of the two hygroscopic belts 122, so that while one of the hygroscopic belts 122 is performing dehumidification work, the other hygroscopic belt 122 can be dried with the help of the heat discharged by the load test box, so that the two hygroscopic belts 122 can be reused in turn without worrying about the problem of adsorbed humidity saturation. In addition, since the entire filter belt 12 is concave in layout, although the two hygroscopic belts 122 on the filter belt 12 correspond to the two groups of fans 14 respectively, they cannot be completely aligned when the position is switched. Therefore, the area of ​​the two hygroscopic belts 122 needs to be slightly larger than the area of ​​the two groups of fans 14, so as to leave a redundant area for misalignment, so that the two hygroscopic belts 122 can be aligned with the two groups of fans 14 after the position is switched.

[0020] The driving frame includes a front frame 3 and a tail frame 4 which are slidably installed in the chassis 1. Two slide rails are arranged on the bottom inner wall of the chassis 1. Two slide seats are arranged at the bottom of the front frame 3 and the tail frame 4. The four slide seats are slidably connected with the two slide rails respectively, so that the filtering mechanism can be stably arranged in the chassis 1 and can be conveniently taken out from the chassis 1. A plurality of connecting rods 5 are arranged on the front frame 3 and the tail frame 4. Threads are arranged at both ends of the connecting rod 5. One end of the connecting rod 5 is threadedly connected with the tail frame 4, and the other end passes through the front frame 3 and is fixed by a nut, so that the entire driving frame can be easily disassembled, so that the filter belt 12 can be conveniently maintained and replaced later. Two driving rollers 6 and four shaping rollers are arranged on the front frame 3 and the tail frame 4. Roller 7, wherein the surface of the driving roller 6 is provided with a rubber layer, which can increase the friction between it and the filter belt 12, thereby ensuring normal transmission. A motor 9 and a worm gear 11 are arranged on the front frame 3, and a worm 10 meshing with the worm gear 11 is arranged on the output shaft of the motor 9, and one end of the worm gear 11 is provided with a hexagonal groove, and one end of the corresponding driving roller 6 is hexagonal and extends into the hexagonal groove, so that the entire driving frame can be normally disassembled and assembled, and at the same time, the normal transmission of the motor 9 to the driving roller 6 can be realized. The filter belt 12 is sleeved on the two driving rollers 6 and contacts with the four shaping rollers 7. The four shaping rollers 7 can limit the overall layout of the filter belt 12 to make it concave, so as to ensure that it is more compact and does not occupy too much space.

[0021] Combination Figure 1 and Figure 2 A concave opening is provided on the chassis 1, and the concave opening serves as the inlet and outlet of the filtering mechanism. A concave sealing plate 8 matched with the concave opening is provided on the front frame 3, and the concave sealing plate 8 serves as a stopper for the concave opening. Two handles are provided on the concave sealing plate 8, so that the entire filtering mechanism can be conveniently taken out of the chassis 1 for maintenance.

[0022] Two pressing rollers 15 are rotatably arranged on the front frame 3 and the tail frame 4 and are distributed up and down. The filter belt 12 passes between the two pressing rollers 15, so that when the filter belt 12 is transmitting, the two pressing rollers 15 can assist in squeezing out the water stains in the front frame 3.

[0023] Combination Figure 7 and Figure 8 A brush roller 16 is rotatably provided on the front frame 3 and the tail frame 4. The brush roller 16 contacts the filter belt 12. The brush roller 16 and the pressure roller 15 below are provided with circular gears. The two circular gears are meshed, so that the pressure roller 15 can drive the brush roller 16 to transfer in the opposite direction of the transmission of the filter belt 12, which can not only clean the filter belt 12 in transmission, but also ensure the cleaning effect.

[0024] Combination Figure 7 A material guide trough 17 is provided at the bottom of the chassis 1 . The material guide trough 17 is located directly below the pressure roller 15 and the brush roller 16 , so as to discharge the dust and water stains cleaned from the filter belt 12 .

[0025] Combination Figure 4 and Figure 5 , the inner walls on both sides of the tail frame 4 are provided with a rotatable fixing frame 13, the fixing frame 13 is composed of a rotating seat installed on the tail frame 4 and a frame, and the fan 14 is installed on the frame, wherein the frame part is connected to the front frame 3 by screws. When the driving frame needs to be disassembled to replace the filter belt 12 thereon, it is only necessary to remove the fixing frame 13 from the front frame 3 and turn to the other side with the rotating seat as the axis, and then remove the front frame 3, so that the disassembly and assembly between the fan 14 and the tail frame 4 can be avoided, so that the replacement and maintenance of the filter belt 12 will not be too cumbersome.

[0026] Combination Figure 6 A power socket is provided on the inner wall of the chassis 1, and a power plug 18 is provided on the tail frame 4. The power plug 18 is inserted into the power socket to supply power to the entire filtering mechanism, and also allows the entire filtering mechanism to be arranged in the chassis 1 in a modular form.

[0027] The implementation principle of an adjustable load test box in the embodiment of the present application is: The heat dissipation holes on the left side of the chassis 1 are air inlets, and the heat dissipation holes on the right side of the chassis 1 are air outlets; Start the two sets of fans 14. The fan 14 on the left is responsible for sending external air into the chassis 1. When the external air enters the chassis 1 through the air inlet, it will first pass through the filter 121 on the filter belt 12 to filter the dust in the air. Then, after the air passes through the moisture absorption belt 122, the moisture in the air will be absorbed by the sponge layer 1222, so that the moisture in the air will not enter the load test box, thereby ensuring the normal heat dissipation of the load test box while preventing it from being affected by moisture. In order to avoid the moisture saturation of the hygroscopic belt 122 at the air inlet, the motor 9 is started, and the motor 9 drives the corresponding driving roller 6 to rotate through the worm 10 and the worm gear 11. The driving roller 6 starts to drive the filter belt 12 by rotating, so that the position of the hygroscopic belt 122 can be changed, and the positions of the two hygroscopic belts 122 are exchanged, so that the saturated hygroscopic belt 122 is transferred to the air outlet position. At this time, the heat flow inside the load test box can pass through the saturated hygroscopic belt 122 when it is discharged through the air outlet, and the heat discharged by the load test box can be used to dry it, so that the two hygroscopic belts 122 can be adjusted to cycle in turn to absorb moisture; At the same time, when the saturated moisture-absorbing belt 122 passes through the two pressing rollers 15, the two pressing rollers 15 can squeeze out the water stains in the sponge layer 1222 inside it, so that it can be dehydrated before drying, thereby improving its drying efficiency. When the filter belt 12 is transmitted, it will drive the two pressing rollers 15 to rotate, and the pressing roller 15 at the bottom will drive the brush roller 16 to rotate in the opposite direction of the running direction of the filter belt 12 through the circular gear, so as to clean the dust attached to the filter screen 121, and then the cleaned dust and water stains can be discharged along the guide trough 17.

[0028] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An adjustable load test box, comprising: A chassis (1) and a bottom plate (2) suspended in the chassis (1), characterized in that a filtering mechanism is arranged in the chassis (1), the filtering mechanism comprising a driving frame having an overall concave structure and a filter belt (12) arranged on the driving frame and capable of circulating transmission, the driving frame being capable of adjusting the filter belt (12), the filter belt (12) being capable of filtering dust and moisture in the air, and the driving frame being equipped with two sets of fans (14) for air intake and exhaust, respectively; The filter belt (12) is composed of two filter screens (121) of equal length and two moisture absorption belts (122) of equal length. The two filter screens (121) and the two moisture absorption belts (122) are evenly distributed, and the positions of the two moisture absorption belts (122) are respectively opposite to the two sets of fans (14). The moisture absorption belt (122) is composed of two gauze nets (1221) and a sponge layer (1222) between the two gauze nets (1221), so that the moisture absorption belt (122) can absorb moisture in the air while ensuring its own ventilation.

2. The adjustable load test box according to claim 1, characterized in that: The driving frame comprises a front frame (3) and a tail frame (4) which are slidably mounted in the chassis (1); a plurality of connecting rods (5) are arranged on the front frame (3) and the tail frame (4); two driving rollers (6) and four shaping rollers (7) are arranged on the front frame (3) and the tail frame (4); a motor (9) for driving the driving rollers (6) to rotate is arranged on the front frame (3); the filter belt (12) is sleeved on the two driving rollers (6) and is in contact with the four shaping rollers (7).

3. The adjustable load test box according to claim 2, characterized in that: The chassis (1) is provided with a concave opening, the front frame (3) is provided with a concave sealing plate (8) adapted to the concave opening, and the concave sealing plate (8) is provided with two handles, so that the entire filtering mechanism can be conveniently taken out of the chassis (1) for maintenance.

4. The adjustable load test box according to claim 2, characterized in that: Two pressing rollers (15) are rotatably arranged on the front frame (3) and the tail frame (4) and are distributed up and down, and the filter belt (12) passes between the two pressing rollers (15), so that when the filter belt (12) is in transmission, the two pressing rollers (15) can assist in squeezing out water stains in the front frame (3).

5. The adjustable load test box according to claim 2, characterized in that: The front frame (3) and the tail frame (4) are provided with brush rollers (16), and the brush rollers (16) are in contact with the filter belt (12), so that the brush rollers (16) can clean the filter belt (12) in transmission.

6. The adjustable load test box according to claim 5, characterized in that: The brush roller (16) is rotatably connected to the front frame (3) and the tail frame (4); the brush roller (16) and the pressure roller (15) located below are both provided with circular gears, and the two circular gears are meshed, so that the pressure roller (15) can drive the brush roller (16) to transfer in the opposite direction of the transmission direction of the filter belt (12).

7. The adjustable load test box according to claim 6, characterized in that: A material guide trough (17) is provided at the bottom of the chassis (1), and the material guide trough (17) is located directly below the pressure roller (15) and the brush roller (16), and is used to discharge dust and water stains cleaned from the filter belt (12).

8. The adjustable load test box according to claim 1, characterized in that: The sponge layer (1222) is provided with a plurality of inclined perforations distributed in an array, so as to further improve the ventilation effect of the sponge layer (1222) without affecting the dehumidification performance of the sponge layer (1222).

9. The adjustable load test box according to claim 2, characterized in that: Rotatable fixing frames (13) are provided on the inner walls of both sides of the tail frame (4); the other ends of the two fixing frames (13) are connected to the front frame (3); and the two sets of fans (14) are respectively fixedly connected to the corresponding fixing frames (13).

10. The adjustable load test box according to claim 2, characterized in that: A power supply socket is provided on the inner wall of the chassis (1), and a power supply plug (18) is provided on the tail frame (4). The power supply plug (18) is inserted into the power supply socket, thereby supplying power to the entire filtering mechanism and enabling the entire filtering mechanism to be arranged in a modular form within the chassis (1).

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