CN210536024U

CN210536024U - Direct current screen protection device

Info

Publication number: CN210536024U
Application number: CN201921164578.5U
Authority: CN
Inventors: 王国杰; 闫建彬; 孙晓飞
Original assignee: Hebei Goldman Sachs Electrical Equipment Co Ltd
Current assignee: Hebei Goldman Sachs Electrical Equipment Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-05-15
Anticipated expiration: 2029-07-23

Abstract

The utility model relates to the technical field of direct current screen accessories, in particular to a direct current screen protection device, which is additionally provided with a heat dissipation mechanism to improve the heat dissipation effect of a direct current screen, thereby reducing the probability that an internal control assembly and a battery assembly of the direct current screen work in a high-temperature environment for a long time, reducing the fault rate of the direct current screen and simultaneously improving the working efficiency of the direct current screen; the solar storage device comprises a shell, wherein a storage cavity is arranged in the shell, a control assembly and a battery assembly are arranged in the storage cavity, a base is arranged at the bottom end of the shell, and four groups of supporting legs are respectively arranged on the left front side, the left rear side, the right front side and the right rear side of the bottom end of the base; still include fixed plate, fan subassembly, inlet tube subassembly, communicating pipe, dispersion case, two sets of blast pipes, exhaust fan subassembly and output tube, the left end of fixed plate is connected with the right-hand member middle part of base, and the bottom of fan subassembly is provided with two sets of supports, and the right-hand member bottom intercommunication of depositing the chamber is provided with the through hole.

Description

Direct current screen protection device

Technical Field

The utility model relates to a technical field of direct current screen auxiliary device especially relates to a direct current screen protection device.

Background

As is well known, the power operation power sources in power plants and substations are all dc power sources, and the dc screen is a device for supplying such dc power sources, and it supplies power to dc loads, power loads, dc emergency lighting loads, and the like, and is widely used in the field of power supply and distribution; the existing direct current screen comprises a shell, a storage cavity is arranged in the shell, a control assembly and a battery assembly are arranged in the storage cavity, a base is arranged at the bottom end of the shell, and four groups of support legs are respectively arranged on the left front side, the left rear side, the right front side and the right rear side of the bottom end of the base; when the existing direct current screen is used, firstly, a current screen with a specified model is purchased according to actual requirements, then, the current screen is placed at a specified position through four groups of supporting legs of a base and is electrically connected in a power supply system, and at the moment, the direct current screen can enter a working state; the existing direct-current screen is found in use, the direct-current screen generates a large amount of heat when working, however, because the existing direct-current screen is not provided with a heat dissipation mechanism, the internal control assembly and the battery assembly of the direct-current screen work in a high-temperature environment for a long time, the fault rate of the direct-current screen is improved, the working efficiency of the direct-current screen is weakened, and the practicability is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an add radiating mechanism and improve the radiating effect of direct current screen, consequently reduced direct current screen internal control subassembly and battery pack and be in the probability of working under the higher environment of temperature for a long time, therefore reduced the fault rate of direct current screen, improved the work efficiency of direct current screen simultaneously to strengthen the direct current screen protection device of practicality.

The utility model discloses a direct current screen protection device, which comprises a shell, wherein a storage cavity is arranged in the shell, a control assembly and a battery assembly are arranged in the storage cavity, a base is arranged at the bottom end of the shell, and four groups of support legs are respectively arranged at the left front side, the left rear side, the right front side and the right rear side of the bottom end of the base; the fan assembly comprises a base, and is characterized by further comprising a fixed plate, a fan assembly, an air inlet pipe assembly, a communicating pipe, a dispersion box, two groups of air supply pipes, an exhaust fan assembly and an output pipe, wherein the left end of the fixed plate is connected with the middle part of the right end of the base, the bottom end of the fan assembly is provided with two groups of supports, the bottom ends of the two groups of supports are respectively connected with the left side and the right side of the top end of the fixed plate, the air inlet pipe assembly is installed at the upper side input end of the fan assembly, the bottom of the right end of the storage cavity is communicated with a penetrating hole, the left end of the communicating pipe penetrates through the penetrating hole from the right side of the shell in a sealing manner and extends into the storage cavity, the right end of the communicating pipe is communicated with the left side output end of the fan assembly, the bottom end of the dispersion box is communicated with the bottom end of, the inner of two sets of blast pipes all is provided with the multiunit tuber pipe to one side, the top intercommunication of depositing the chamber is provided with the exhaust vent, exhaust fan assembly's bottom region clamps with the exhaust vent, the downside input of output tube and the upside output of exhaust fan communicate.

The utility model discloses a direct current screen protection device, intake pipe subassembly include rose box, filter and switch door subassembly, the inside of rose box is provided with the filter chamber, the bottom left side intercommunication of filter chamber is provided with the delivery outlet, the upside input intercommunication of delivery outlet and hierarchical subassembly, the front end, rear end, the top and the bottom of filter are connected with regional front end, rear end, top and the bottom in the middle part of filter chamber respectively, the right-hand member of filter runs through and is provided with the filtration pore, be provided with the filter screen on the filtration pore, the top right side intercommunication of filter chamber is provided with the input tube, the right-hand member intercommunication of filter chamber is provided with the clearance hole, switch door subassembly is installed on the right-hand member lateral wall in clearance hole.

The utility model discloses a direct current screen protection device, the switch door subassembly includes door plant, sealed pad, support block, anchorage bar, pin rod, round pin head, push plate, promotion spring and controls the handle, the bottom of door plant is provided with the installation block, the installation block is articulated with support block, the left end of support block is connected with the right-hand member bottom region of rose box, the left end of door plant is connected with the right-hand member of sealed pad, the left end of sealed pad is sealed hugging closely with the right-hand member lateral wall of clearance hole, the left end of anchorage bar is connected with the right-hand member top region of rose box, the right part region of anchorage bar is provided with the anchorage block, the top region of door plant is provided with the promotion chamber, the push plate slides with the promotion chamber and clamps, the top of promotion chamber communicates and is provided with the extension hole, the extension hole slides with the pin rod and clamps, the top of pin rod is connected with the bottom right side of round pin head, the right-hand member of round pin head is hugged closely with the left end of fastening block, the bottom of pin pole is connected with the top of slurcam, the top and the bottom that promote the spring are hugged closely with the bottom of slurcam and the bottom that promotes the chamber respectively, the right-hand member intercommunication that promotes the chamber is provided with the slide opening, the left end of controlling the handle slides from the right side of door plant and passes the slide opening and stretch into to promoting the intracavity, the left end of controlling the handle is connected with the right-hand member middle part of slurcam.

The utility model discloses a direct current screen protection device still includes two sets of anchor strut, the outer end of two sets of anchor strut is connected with the regional left end and the right-hand member in top of depositing the chamber respectively, the inner of two sets of anchor strut is connected with the left end top region of two sets of blast pipes respectively.

The utility model discloses a direct current screen protection device still includes presses the handle, press the left end of handle and be connected with the right-hand member of controlling the handle.

The utility model discloses a direct current screen protection device still includes four group's lifting screw rod, four group's firm boards and four group's adjustable rings of group, the bottom of four group's landing legs is provided with four group's promotion thread grooves respectively, four group's promotion thread grooves respectively with four group's lifting screw rod spiral shell dresses, four group's firm board's of group top is connected with four group's lifting screw rod's bottom respectively, four group's adjustable rings respectively with four group's lifting screw rod's the regional suit in bottom.

The utility model discloses a direct current screen protection device still includes the auxiliary rod, the top and the bottom of auxiliary rod are connected with the bottom right side of rose box and the top right side of fan subassembly respectively.

The utility model discloses a direct current screen protection device still includes the switch handle, the left end of switch handle is connected with the right-hand member of door plant.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, the input end of an air inlet pipe assembly and the output end of an output pipe are respectively extended to the outer side of a direct current screen placing space, then a fan assembly and an exhaust fan assembly are started while the direct current screen works, at the moment, the fan assembly pumps air with lower temperature in an external space into a dispersion box through the air inlet pipe assembly, then the dispersion box conveys the air which flows fast into two groups of air supply pipes, at the moment, the two groups of air supply pipes respectively blow the air with lower temperature to the surface of a control assembly or a battery assembly through a plurality of groups of inclined air pipes on the side wall of the air supply pipes, the opening of the inclined air pipes is flushed up, therefore, the heat on the surface of the control assembly or the battery assembly of a blown air carrier is quickly raised, meanwhile, the exhaust fan assembly discharges the air with higher temperature at the top of the control assembly or the battery assembly out of the placing space of the control assembly or the battery assembly through the output pipe, at the moment, the heat, good radiating effect has been played to the radiating effect through addding heat dissipation mechanism and having improved the direct current screen has consequently reduced the probability that direct current screen internal control subassembly and battery pack are in work under the higher environment of temperature for a long time, therefore has reduced the fault rate of direct current screen, has improved the work efficiency of direct current screen simultaneously, thereby reinforcing the practicality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of a partially enlarged structure of a;

fig. 3 is a schematic view of a partial enlarged structure of B of the present invention;

fig. 4 is a schematic view of a partial enlarged structure of the C of the present invention;

in the drawings, the reference numbers: 1. a housing; 2. a storage chamber; 3. a control component; 4. a battery assembly; 5. Four groups of supporting legs; 6. a fixing plate; 7. a fan assembly; 8. a communicating pipe; 9. a dispersion box; 10. Two groups of blast pipes; 11. an exhaust fan assembly; 12. an output pipe; 13. two sets of brackets; 14. a filter box; 15. a filter plate; 16. a filter chamber; 17. a filter screen; 18. cleaning the holes; 19. a door panel; 20. a gasket; 21. a support block; 22. a fastening rod; 23. a pin rod; 24. a pin head; 25. A push plate; 26. a push spring; 27. a control handle; 28. two sets of reinforcing rods; 29. pressing the handle; 30. four groups of lifting threaded rods; 31. four groups of stabilizing plates; 32. four groups of adjusting rings; 33. An auxiliary lever; 34. and (6) opening and closing the handle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the dc screen protection device of the present invention comprises a casing 1, a storage cavity 2 is arranged inside the casing 1, a control assembly 3 and a battery assembly 4 are arranged in the storage cavity 2, a base is arranged at the bottom end of the casing 1, and four sets of legs 5 are respectively arranged at the left front side, the left rear side, the right front side and the right rear side of the bottom end of the base; the air inlet pipe assembly is arranged at the upper side input end of the fan assembly 7, the bottom of the right end of the storage cavity 2 is communicated with a penetration hole, the left end of the communication pipe 8 hermetically penetrates through the penetration hole from the right side of the shell 1 and extends into the storage cavity 2, the right end of the communication pipe 8 is communicated with the left side output end of the fan assembly 7, the bottom of the dispersion box 9 is communicated with the bottom of the storage cavity 2, a flow cavity is arranged inside the dispersion box 9, the left end of the communication pipe 8 is communicated with the right end of the flow cavity, the bottom ends of the two groups of air supply pipes 10 are respectively communicated with the left side and the right side of the top of the flow cavity, the inner ends of the two groups of air supply pipes 10 are provided with a plurality of groups of inclined air pipes, the top end of the storage cavity 2 is communicated with an air outlet, the bottom area of the exhaust fan assembly 11 is clamped with the air outlet, and the lower side input end of the output pipe 12 is communicated with the upper side output end of the exhaust fan; firstly, the input end of an air inlet pipe assembly and the output end of an output pipe are respectively extended to the outer side of a direct current screen placing space, then a fan assembly and an exhaust fan assembly are started while the direct current screen works, at the moment, the fan assembly pumps air with lower temperature in an external space into a dispersion box through the air inlet pipe assembly, then the dispersion box conveys the air which flows fast into two groups of air supply pipes, at the moment, the two groups of air supply pipes respectively blow the air with lower temperature to the surface of a control assembly or a battery assembly through a plurality of groups of inclined air pipes on the side wall of the air supply pipes, the opening of the inclined air pipes is flushed up, therefore, the heat on the surface of the control assembly or the battery assembly of a blown air carrier is quickly raised, meanwhile, the exhaust fan assembly discharges the air with higher temperature at the top of the control assembly or the battery assembly out of the placing space of the control assembly or the battery assembly through the output pipe, at the moment, the heat, good radiating effect has been played to the radiating effect through addding heat dissipation mechanism and having improved the direct current screen has consequently reduced the probability that direct current screen internal control subassembly and battery pack are in work under the higher environment of temperature for a long time, therefore has reduced the fault rate of direct current screen, has improved the work efficiency of direct current screen simultaneously, thereby reinforcing the practicality.

The utility model discloses a direct current screen protection device, the intake pipe subassembly includes filter tank 14, filter 15 and switch door subassembly, filter tank 14's inside is provided with filter chamber 16, filter chamber 16's bottom left side intercommunication is provided with the delivery outlet, the delivery outlet communicates with hierarchical subassembly's upside input, filter 15's front end, rear end, top and bottom are connected with filter chamber 16's middle part region's front end, rear end, top and bottom respectively, filter 15's right-hand member runs through and is provided with the filter hole, be provided with filter screen 17 on the filter hole, filter chamber 16's top right side intercommunication is provided with the input tube, filter chamber 16's right-hand member intercommunication is provided with clearance hole 18, the switch door subassembly is installed on clearance hole 18's right-hand member lateral wall; the filter screen on the filter through the rose box filters the air that gets into to the dispersion box, very big reduction enter into to the dust impurity content in the air of dispersion box, reduced the dust volume that the dispersion box contains in the gas that blows for control assembly or battery pack through two sets of blast pipes promptly, clearance hole on the rose box makes the clearance convenience more of filter screen simultaneously, and the effect of shutoff has been played to the clearance hole to the switch door subassembly, thereby the practicality has been strengthened.

The utility model relates to a direct current screen protection device, the switch door subassembly includes door plant 19, sealing gasket 20, support block 21, anchorage bar 22, pin rod 23, round pin head 24, push plate 25, push spring 26 and control handle 27, the bottom of door plant 19 is provided with the installation block, the installation block is articulated with support block 21, the left end of support block 21 is connected with the right-hand member bottom region of filter box 14, the left end of door plant 19 is connected with the right-hand member of sealing gasket 20, the left end of sealing gasket 20 is sealed with the right-hand member lateral wall of clearance hole 18 and hugs closely, the left end of anchorage bar 22 is connected with the right-hand member top region of filter box 14, the right region of anchorage bar 22 is provided with the anchorage block, the top region of door plant 19 is provided with the promotion chamber, push plate 25 slides with the promotion chamber and clamps, the top of promotion chamber intercommunication is provided with the hole, the hole stretches out and pin rod 23 slide and clamps, the top of pin rod 23 is connected with the bottom right side of, the right end of the pin head 24 is tightly attached to the left end of the fastening block, the bottom end of the pin rod 23 is connected with the top end of the pushing plate 25, the top end and the bottom end of the pushing spring 26 are respectively tightly attached to the bottom end of the pushing plate 25 and the bottom end of the pushing cavity, the right end of the pushing cavity is communicated with a sliding hole, the left end of the control handle 27 slides from the right side of the door plate 19, penetrates through the sliding hole and extends into the pushing cavity, and the left end of the control handle 27 is connected with the middle part of the right end of the pushing plate 25; when dust on the filter screen in the door plant clearance rose box is opened to needs, can directly press down and control the handle and make and control the handle and drive the slurcam extrusion and promote the spring and move down, the slurcam passes through the pin rod and drives the round pin head and move down simultaneously, make the fastening block of anchorage bar no longer spacing to the door plant through the round pin head, at this moment alright make the door plant open on the right side of rose box with the door plant that rotates under the support of support block and installation piece, and when needing to close the door plant, directly upwards rotate the door plant make sell first card picture to in the fastening block of anchorage bar can, the sealed pad of door plant then will clear up the hole and seal up this moment, make the on-off operation of door plant more convenient through this door plant switch mode, reliability, thereby the practicality has been strengthened.

The utility model discloses a direct current screen protection device, still include two sets of anchor rods 28, the outer end of two sets of anchor rods 28 is connected with the left end and the right-hand member of the top region of depositing chamber 2 respectively, the inner of two sets of anchor rods 28 is connected with the left end top region of two sets of blast pipes 10 respectively; make two sets of blast pipes more firm through two sets of anchor rods to the practicality has been strengthened.

The utility model discloses a direct current screen protection device, which also comprises a pressing handle 29, wherein the left end of the pressing handle 29 is connected with the right end of the control handle 27; make controlling more convenient of controlling of handle through pressing the handle, reduced the probability that the hand slipped on controlling the handle to the practicality has been strengthened.

The utility model discloses a direct current screen protection device, still include four groups of lifting threaded rods 30, four groups of stabilizing plates 31 and four groups of adjusting rings 32, the bottom of four groups of landing legs 5 is provided with four groups of lifting thread grooves respectively, four groups of lifting thread grooves are respectively with four groups of lifting threaded rods 30 spiral shell dress, the top of four groups of stabilizing plates 31 is connected with four groups of lifting threaded rods 30's bottom respectively, four groups of adjusting rings 32 are respectively with four groups of lifting threaded rods 30's bottom regional fixed suit; four groups of adjusting threaded rods are rotated through four groups of adjusting rings in four groups of adjusting threaded grooves of four groups of supporting legs respectively, the four groups of adjusting rings are hexagonal prism-shaped at the moment, a wrench can be used for adjusting the four groups of adjusting threaded rods directly, the extension lengths of the four groups of adjusting threaded rods on the lower sides of the four groups of supporting legs can be changed, the stability can be adjusted, meanwhile, the contact area of equipment and a placing surface is increased through four groups of stabilizing plates, the pressure on the ground is reduced, the stability is improved, and the use limitation is reduced.

The utility model discloses a direct current screen protection device, which also comprises an auxiliary rod 33, wherein the top end and the bottom end of the auxiliary rod 33 are respectively connected with the right side of the bottom end of a filter box 14 and the right side of the top end of a fan component 7; the filter box is supported through the auxiliary rod, so that the stability of the filter box is improved, and the practicability is enhanced.

The utility model discloses a direct current screen protection device, which also comprises a switch handle 34, wherein the left end of the switch handle 34 is connected with the right end of the door plate 19; the door plate is more convenient to control through the switch handle, so that the practicability is enhanced.

The utility model discloses a direct current screen protection device, it is at work, at first according to the current screen of actual demand appointed model, then place it in appointed position and electric link finishes in power supply system through four groups of landing legs of base, will make equipment adjust to steady state simultaneously through four groups of adjusting screw rod, direct current screen alright get into operating condition this moment, then stretch out the input of air inlet pipe subassembly and the output of output tube to the outside that the direct current screen placed the space respectively, then when the direct current screen work, start fan subassembly and exhaust fan subassembly, fan subassembly is through air inlet pipe subassembly outside the lower air of temperature of space in the suction box of air, then the suction box carries the fast flowing air to two sets of blast pipes, at this moment two sets of blast pipes blow the lower air of temperature to the surface of control module or battery pack through the multiunit to the oblique tuber pipe on its lateral wall respectively, because the trompil of oblique tuber pipe is gone up, consequently the heat on air carrier control assembly or the battery pack surface of blowing then rises fast, and exhaust fan assembly then passes through the higher gas of temperature at control assembly or battery pack top through output tube discharge control assembly or battery pack's the space of placing simultaneously, and the heat that control assembly or battery pack gived off this moment is then fast discharged the space of placing, has played good radiating effect.

The terms "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A direct current screen protection device comprises a shell (1), wherein a storage cavity (2) is formed in the shell (1), a control assembly (3) and a battery assembly (4) are arranged in the storage cavity (2), a base is arranged at the bottom end of the shell (1), and four groups of supporting legs (5) are respectively arranged on the left front side, the left rear side, the right front side and the right rear side of the bottom end of the base; the device is characterized by further comprising a fixing plate (6), a fan assembly (7), an air inlet pipe assembly, a communicating pipe (8), a dispersion box (9), two groups of air supply pipes (10), an exhaust fan assembly (11) and an output pipe (12), wherein the left end of the fixing plate (6) is connected with the middle part of the right end of the base, two groups of supports (13) are arranged at the bottom end of the fan assembly (7), the bottom ends of the two groups of supports (13) are respectively connected with the left side and the right side of the top end of the fixing plate (6), the air inlet pipe assembly is installed at the upper side input end of the fan assembly (7), a penetrating hole is communicated with the bottom of the right end of the storage cavity (2), the left end of the communicating pipe (8) penetrates through the penetrating hole from the right side of the shell (1) in a sealing manner and extends into the storage cavity (2), and the right end, the bottom of dispersion case (9) and the bottom intercommunication of depositing chamber (2), the inside of dispersion case (9) is provided with the chamber that flows, the left end of communicating pipe (8) and the right-hand member intercommunication in chamber that flows, the bottom of two sets of blast pipes (10) respectively with the top left side and the right side intercommunication in chamber that flow, the inner of two sets of blast pipes (10) all is provided with the multiunit tuber pipe to one side, the top intercommunication of depositing chamber (2) is provided with the exhaust vent, the bottom region and the exhaust vent of exhaust fan subassembly (11) clamp, the downside input of output tube (12) and the upside output of exhaust fan communicate.

2. A DC screen protector according to claim 1 characterized in that the air inlet pipe assembly comprises a filter box (14), a filter plate (15) and a switch door assembly, a filter cavity (16) is arranged in the filter box (14), an output hole is communicated and arranged at the left side of the bottom end of the filter cavity (16), the output hole is communicated with the upper side input end of the grading component, the front end, the rear end, the top end and the bottom end of the filter plate (15) are respectively connected with the front end, the rear end, the top end and the bottom end of the middle area of the filter cavity (16), the right end of the filter plate (15) is provided with a filter hole in a penetrating way, a filter screen (17) is arranged on the filter hole, the top right side intercommunication of filter chamber (16) is provided with the input tube, the right-hand member intercommunication of filter chamber (16) is provided with clearance hole (18), switching door subassembly is installed on the right-hand member lateral wall in clearance hole (18).

3. A direct current screen protection device according to claim 2, wherein the switching door assembly comprises a door panel (19), a sealing gasket (20), a support block (21), a fastening rod (22), a pin rod (23), a pin head (24), a pushing plate (25), a pushing spring (26) and a control handle (27), the bottom end of the door panel (19) is provided with a mounting block, the mounting block is hinged with the support block (21), the left end of the support block (21) is connected with the bottom area of the right end of the filter box (14), the left end of the door panel (19) is connected with the right end of the sealing gasket (20), the left end of the sealing gasket (20) is tightly sealed with the outer side wall of the right end of the cleaning hole (18), the left end of the fastening rod (22) is connected with the top area of the right end of the filter box (14), the right area of the fastening rod (22) is provided with a fastening block, the top region of door plant (19) is provided with and promotes the chamber, slurcam (25) slide with promoting the chamber and clamp, the top intercommunication that promotes the chamber is provided with and stretches out the hole, it slides with pin rod (23) and clamps to stretch out the hole, the top of pin rod (23) is connected with the bottom right side of round pin head (24), the right-hand member of round pin head (24) is hugged closely with the left end of fastening block, the bottom of pin rod (23) is connected with the top of slurcam (25), the top and the bottom of push spring (26) are hugged closely with the bottom of slurcam (25) and the bottom that promotes the chamber respectively, the right-hand member intercommunication that promotes the chamber is provided with the slide opening, the left end of controlling handle (27) slides from the right side of door plant (19) and passes the slide opening and stretches into to promoting the intracavity, the left end of controlling handle (27) is connected with the right-hand member middle part of slurcam (.

4. A direct current screen protection device according to claim 3, characterised by comprising two sets of reinforcement bars (28), the outer ends of said two sets of reinforcement bars (28) being connected to the left and right ends, respectively, of the top zone of the storage chamber (2), and the inner ends of said two sets of reinforcement bars (28) being connected to the top zone of the left ends, respectively, of the two sets of blower tubes (10).

5. A DC screen protector according to claim 4 characterised in that it also includes a push handle (29), the left end of the push handle (29) being connected to the right end of the operating handle (27).

6. A DC screen protection device as claimed in claim 5, further comprising four sets of lifting threaded rods (30), four sets of stabilizing plates (31) and four sets of adjusting rings (32), wherein the bottom ends of the four sets of supporting legs (5) are respectively provided with four sets of lifting threaded grooves, the four sets of lifting threaded grooves are respectively screwed with the four sets of lifting threaded rods (30), the top ends of the four sets of stabilizing plates (31) are respectively connected with the bottom ends of the four sets of lifting threaded rods (30), and the four sets of adjusting rings (32) are respectively fixedly sleeved with the bottom areas of the four sets of lifting threaded rods (30).

7. A DC screen protector according to claim 6 characterised in that it also includes auxiliary rods (33), the top and bottom ends of the auxiliary rods (33) being connected to the right of the bottom end of the filter box (14) and the right of the top end of the fan assembly (7), respectively.

8. A direct current screen protection device according to claim 7, further comprising a switch handle (34), wherein the left end of the switch handle (34) is connected to the right end of the door panel (19).