Dust-proof electric welding machine

Abstract

The present invention relates to the technical field of electric welding machines, and discloses a dustproof electric welding machine, including a chassis, the chassis including a base and a left sealing plate and a right sealing plate at the left and right ends of the base, a top sealing plate that is sleeved on the top surfaces of the left and right sealing plates and is closed and matched with the base, a partition plate 1 and a partition plate 2 are arranged on the base from left to right in sequence, the partition plate 1 and the partition plate 2 divide the interior of the chassis into a positive pressure chamber, a device installation chamber and a negative pressure chamber that are independent of each other, the positive pressure chamber and the negative pressure chamber are both provided with an adjustment component that is connected or cut off with the device installation chamber, an interlocking component is provided between the opening and closing of the two adjustment components, and a vent 1 is provided on both sides of the front and rear of the top sealing plate corresponding to the device installation chamber. The present invention can adaptively adjust the air duct in the chassis according to the needs of the use environment, avoid the influence of dust on the equipment in the chassis, and thus improve the use range of the device.

Description

Technical Field

[0001] The invention relates to the technical field of electric welding machines, in particular to a dustproof electric welding machine. Background Art

[0002] The electric welder uses the high-temperature arc generated when the positive and negative poles are short-circuited for an instant to melt the solder on the welding rod and the material to be welded, so as to combine the contacted objects. In order to achieve the purpose of heat dissipation during the use of the electric welder, an exhaust fan is usually installed on the end face of the chassis, and an air inlet is opened on its side. When the exhaust fan is started, the air in the chassis will be exhausted, forming a negative pressure state in the chassis. At this time, the external air will flow into the chassis through the air inlet, dissipate heat for the equipment in the chassis, and finally be discharged from the exhaust fan to the outside of the chassis.

[0003] During the above-mentioned heat dissipation process, since the inside of the chassis is always in a negative pressure state, the external air will be mixed with dust and enter the chassis from the air inlet or the gap of the chassis. When the chassis is operating in a dusty environment, there is a lot of dust mixed in the air. At this time, a large amount of dust will enter the chassis, affecting the quality requirements of the equipment in the chassis. Therefore, it is urgent to design a dust-proof welding machine that can quickly switch between a low-dust environment or a dusty environment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a dustproof welding machine that can be quickly switched between a low-dust environment and an environment with high dust.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a dustproof electric welding machine includes a chassis, the chassis includes a base and a left sealing plate and a right sealing plate at the left and right ends of the base, and a top sealing plate that is sealed and matched with the base is sleeved on the top surfaces of the left sealing plate and the right sealing plate;

[0006] The base is provided with a partition plate 1 and a partition plate 2 from left to right, and the partition plate 1 and the partition plate 2 divide the interior of the chassis into a positive pressure chamber, a device installation chamber and a negative pressure chamber which are independent of each other;

[0007] The positive pressure chamber and the negative pressure chamber are both provided with adjustment components that are connected or disconnected with the equipment installation chamber, and interlocking components are provided between the opening and closing and the closing and opening of the two adjustment components. Ventilation holes are provided on the front and rear sides of the top sealing plate corresponding to the equipment installation chamber.

[0008] As an improvement, the regulating assembly includes a shell of a T-shaped structure arranged in the positive pressure chamber and the negative pressure chamber, and the two ends of the shell are symmetrically provided with channel one and channel two, and a guide cover connected to the channel one near the left sealing plate is provided, and an intake fan is provided at both upper and lower ends of the guide cover on the left sealing plate, and an exhaust fan connected to another channel one is provided on the right sealing plate, and a filter is provided on the end surface of the top sealing plate near the intake fan, and a ventilation hole two connected to the channel two is opened on the partition one and the partition two;

[0009] There is an adjustment cavity between the opposite ends of channel one and channel two, and a lifting rod is slidably provided on the shell corresponding to the adjustment cavity. A connecting seat is provided on the bottom surface of the lifting rod, and a control component for connecting or disconnecting channel one and channel two is provided on the connecting seat.

[0010] As an improvement, the control component includes sealing seats arranged at both ends of the adjusting chamber, a return spring is fixedly provided between the two sealing seats, telescopic rods are provided at both ends of the connecting seat, the two telescopic rods are slidably connected to the corresponding sealing seats, and the opposite ends of the two sealing seats are symmetrically fixed with Z-shaped adjustment seats below the connecting seat, the opposite ends of the two adjusting seats are provided with wedge-shaped surfaces, a transition seat is provided on the bottom surface of the connecting seat, a wedge-shaped seat adapted to the wedge-shaped surface is provided on the transition seat, magnetic blocks 1 are provided at both ends of the top surface of the wedge-shaped seat, magnetic blocks 2 cooperating with magnetic block 1 are provided on the top walls of the two adjusting seats, and a cavity for the sealing seat to extend into is opened in the shell.

[0011] As an improvement, an auxiliary spring is fixed between the opposite end faces of the two sealing seats, an abutment seat abutting against the adjusting seat is provided on the bottom wall of the adjusting cavity, and the diameter of the sealing seat is larger than the diameter of the inner wall of channel one or channel two.

[0012] As an improvement, the interlocking assembly includes a hinged seat arranged on the top sealing plate, a rocker arm is hinged on the hinged seat, and sliders are slidably provided at both ends of the bottom surface of the rocker arm. The top end of one lifting rod is hinged on the corresponding slider, and a tooth plate is fixed on the top surface of the other lifting rod. The top end of the tooth plate is hinged on the corresponding slider, and a U-shaped frame is fixed on the top sealing plate corresponding to the tooth plate. A rotating shaft is passed through the U-shaped frame and a gear meshing with the tooth plate is provided on the rotating shaft, and a positioning assembly for fixing the rotating shaft is provided on the top sealing plate.

[0013] As an improvement, the positioning assembly includes a brake disc fixedly arranged at the end of the rotating shaft, a U-shaped seat surrounding the brake disc fixedly arranged on the top sealing plate, guide rods slidingly arranged at both ends of the U-shaped seat, brake pads abutting the brake disc fixedly arranged at the opposite ends of the two guide rods, extension seats are arranged on the two brake pads, swing arms are hinged on the two extension seats, the other ends of the two swing arms are hingedly connected to the moving seat, and an adjusting screw threadedly connected to the U-shaped seat for rotating with the moving seat.

[0014] The beneficial effects of the present invention compared with the prior art are:

[0015] When used in a low-dust environment, the negative pressure chamber is connected to the equipment installation chamber, and the positive pressure chamber is cut off from the equipment installation chamber. At this time, a negative pressure state is formed inside the equipment installation chamber, and the external air enters the equipment installation chamber through the ventilation port to dissipate heat from the equipment inside. When used in an environment with heavy dust, the positive pressure chamber is connected to the equipment installation chamber, and the negative pressure chamber is cut off from the equipment installation chamber. At this time, a positive pressure state is formed inside the equipment installation chamber, and the air entering the equipment installation chamber is discharged to the outside from the ventilation port. During the discharge process, dust in the surrounding air is blown away. This not only dissipates heat in the equipment installation chamber, but also prevents a large amount of dust in the external air from entering the equipment installation chamber, thereby increasing the scope of use of the device.

[0016] The lifting rod is controlled to move up and down, driving the connecting seat, transition seat, wedge seat, adjustment seat and sealing seat to move up and down, so that the sealing seats at both ends are separated or combined with the outer walls of channel one and channel two, and in the process of combining, the tightness of the combination of the sealing seat and channel one and channel two can be increased through the cooperation of the wedge seat and the adjustment seat, so that the connection or disconnection of channel one and channel two can be adjusted;

[0017] Under the action of the interlocking component, the lifting rod at one end is driven to move upward, and the lifting rod at the other end is driven to move downward, so that the adjustment components at both ends can be quickly switched between opening and closing and closing and opening, so that the negative pressure chamber and the equipment installation chamber are connected or cut off, and the positive pressure chamber and the equipment installation chamber are cut off or connected, which increases the convenience of adjustment of the device;

[0018] When the lifting rod moves up and down, it drives the tooth plate to move up and down, and then drives the gear meshing with it to rotate. After the adjustment is completed, the adjusting screw is rotated to drive the moving seat to slide backward. Under the action of the hinged swing arms at both ends, the brake pads at both ends are driven to move relatively, and the brake disc is effectively positioned, thereby effectively positioning the rotating shaft and gear, and at the same time effectively positioning the tooth plate and lifting rod after the adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the present invention is schematically shown in FIG. Figure 1 .

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 3 It is a structural schematic diagram of removing the top sealing plate in the present invention.

[0022] Figure 4 It is a structural schematic diagram of the regulating component in the present invention.

[0023] Figure 5 It is a diagram of the internal structure of the regulating component in the present invention.

[0024] Figure 6 The present invention Figure 5 Enlarged view of point A in the middle.

[0025] Figure 7 It is a structural schematic diagram of the control component in the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the positioning component in the present invention. Figure 1 .

[0027] Fig. 9 This is a schematic diagram of the structure of the positioning component in the present invention. Figure 2 .

[0028] Fig.10 The structure of the present invention is schematically shown in FIG. Figure 2 .

[0029] As shown in the figure: 1. Chassis; 111. Base; 112. Left sealing plate; 113. Partition 1; 114. Partition 2; 115. Right sealing plate; 116. Top sealing plate; 117. Ventilation port 1; 118. Ventilation port 2; 2. Positive pressure chamber; 211. Mounting slot 1; 212. Intake fan; 213. Filter; 3. Equipment installation chamber; 4. Negative pressure chamber; 411. Mounting slot 2; 412. Exhaust fan; 5. Adjustment assembly; 511. Shell; 512. Channel 1; 513. Channel 2; 514. Adjustment chamber; 515. Lifting rod; 516. Connecting seat; 517. Cavity; 518. Air guide cover; 519. Tooth plate; 52 0. U-shaped frame; 521. rotating shaft; 522. gear; 6. control assembly; 611. sealing seat; 612. return spring; 613. telescopic rod; 614. adjusting seat; 615. wedge surface; 616. transition seat; 617. wedge seat; 618. magnetic block 1; 619. magnetic block 2; 620. auxiliary spring; 621. abutment seat; 7. interlocking assembly; 711. hinged seat; 712. rocker arm; 713. slider; 8. positioning assembly; 811. brake disc; 812. U-shaped seat; 813. guide rod; 814. brake pad; 815. extension seat; 816. swing arm; 817. moving seat; 818. adjusting screw. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Fig.10 As shown, a dustproof electric welding machine comprises a chassis 1, the chassis 1 comprises a base 111 and a left sealing plate 112 and a right sealing plate 115 at the left and right ends of the base 111, a top sealing plate 116 which is sealed and matched with the base 111 is sleeved on the top surfaces of the left sealing plate 112 and the right sealing plate 115, and a partition plate 113 and a partition plate 2 114 are arranged on the base 111 from left to right in sequence, and the partition plate 113 and the partition plate 2 114 divide the interior of the chassis 1 into a positive pressure chamber 2, an equipment installation chamber 3 and a negative pressure chamber 4 which are independent of each other;

[0032] The positive pressure chamber 2 and the negative pressure chamber 4 are each provided with an adjustment component 5 which is connected to or disconnected from the equipment installation chamber 3, and an interlocking component 7 is provided between the opening and closing and the closing and opening of the two adjustment components 5, and a ventilation hole 117 is provided on both the front and rear sides of the top sealing plate 116 corresponding to the equipment installation chamber 3.

[0033] Through the above structure, when used in a low dust environment, the action of the control adjustment component 5 is controlled to make the negative pressure chamber 4 communicate with the equipment installation chamber 3. At this time, under the action of the interlocking component 7, the positive pressure chamber 2 and the equipment installation chamber 3 are cut off, so that a negative pressure state is formed in the equipment installation chamber 3. At this time, the external air enters the equipment installation chamber 3 from the vent 117 to dissipate heat for the equipment inside.

[0034] When used in an environment with heavy dust, the positive pressure chamber 2 is connected to the equipment installation chamber 3, and under the action of the interlocking component 7, the negative pressure chamber 4 is cut off from the equipment installation chamber 3, so that a positive pressure state is formed in the equipment installation chamber 3. In the positive pressure state, (because the external air enters the chassis from the air intake fan, the heat dissipation effect is slightly lower than that in the negative pressure state. If you want to achieve the same heat dissipation effect as the negative pressure state in the positive pressure state, you need to increase the number and air volume of the air intake fans, which will cause energy waste when used in a low dust environment), the air entering the equipment installation chamber 3 will be discharged from the vent 117, and the dust in the surrounding air will be blown away during the discharge process. This can not only dissipate heat for the equipment inside, but also prevent more dust in the external air from entering the equipment installation chamber 3;

[0035] In addition, when used in a high temperature environment, the adjustment components 5 at both ends are placed in a half-open state at the same time, and the positive pressure chamber 2 and the negative pressure chamber 4 are started at the same time. This can increase the air circulation inside the chassis 1 and achieve better heat dissipation effects, thereby increasing the scope of use of the device.

[0036] Combined with Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 6 As shown, the regulating component 5 includes a shell 511 of a T-shaped structure arranged in the positive pressure chamber 2 and the negative pressure chamber 4, and a channel 1 512 and a channel 2 513 are symmetrically arranged at both ends of the shell 511. A guide cover 518 connected to the channel 1 512 near the left sealing plate 112 is provided, and an intake fan 212 is provided at both upper and lower ends of the guide cover 518 on the left sealing plate 112. The arrangement of the two intake fans 212 can increase the amount of air entering the chassis 1, so that the chassis 1 has a better heat dissipation effect under a positive pressure state. An exhaust fan 412 connected to another channel 1 512 is arranged on the right sealing plate 115, and a filter screen 213 is arranged on the end face of the top sealing plate 116 near the intake fan 212. The arrangement of the filter screen 213 can prevent dust in the external air from entering the equipment installation chamber 3 through the intake fan 212. According to the needs of the user, a cleaning component for removing dust can also be arranged at the filter screen 213.

[0037] The partition plate 1 113 and the partition plate 2 114 are both provided with a vent 2 118 which is connected with the channel 2 513. When the adjusting component 5 on the right is in an open state, the adjusting component 5 on the left is in a closed state under the action of the interlocking component 7. At this time, the exhaust fan 412 is started, and the air in the equipment installation chamber 3 can be discharged through the channel 1 512 and the channel 2 513, so that a negative pressure state is formed in the equipment installation chamber 3. When the adjusting component 5 on the right is in a closed state, the adjusting component 5 on the left is in an open state. At this time, the air intake fan 212 is started, and the external air can be introduced into the equipment installation chamber 3 through the channel 1 512 and the channel 2 513, so that a positive pressure state is formed in the equipment installation chamber 3.

[0038] There is an adjusting cavity 514 between the opposite ends of channel one 512 and channel two 513, and a lifting rod 515 is slidably provided on the shell 511 corresponding to the adjusting cavity 514. A connecting seat 516 is provided on the bottom surface of the lifting rod 515, and a control component 6 is provided on the connecting seat 516 to connect or disconnect channel one 512 and channel two 513.

[0039] The working principle of the adjustment component 5 is to control the lifting rod 515 to move up and down for adjustment, drive the connecting seat 516 and the control component 6 to move up and down, so that the control component 6 is separated from or engaged with the channel 1 512 and the channel 2 513, so that the channel 1 512 and the channel 2 513 are connected or disconnected for adjustment.

[0040] Combined with Figure 5 , Attachment Figure 6 and attached Figure 7 As shown, the control assembly 6 includes sealing seats 611 arranged at both ends of the adjustment chamber 514 and capable of covering the channel 1 512 and the channel 2 513, a return spring 612 is fixedly arranged between the two sealing seats 611, and telescopic rods 613 are arranged at both ends of the connecting seat 516, and the two telescopic rods 613 are slidably connected to the corresponding sealing seats 611, and the opposite ends of the two sealing seats 611 are symmetrically fixed with Z-shaped adjustment seats 614 below the connecting seat 516. The two opposite ends of the two adjusting seats 614 are provided with wedge-shaped surfaces 615, the bottom surface of the connecting seat 516 is provided with a transition seat 616, and the transition seat 616 is provided with a wedge-shaped seat 617 matched with the wedge-shaped surface 615, and the two ends of the top surface of the wedge-shaped seat 617 are provided with a magnetic block 1 618, and a magnetic block 2 619 matched with the magnetic block 1 618 is provided on the top wall of the two adjusting seats 614. When the magnetic block 1 618 and the magnetic block 2 619 are close to each other, they are in a state of suction, and a cavity 517 for the sealing seat 611 to extend into is opened in the shell 511;

[0041] An auxiliary spring 620 is fixed between the opposite end faces of the two sealing seats 611, and an abutting seat 621 abutting against the adjusting seat 614 is provided on the bottom wall of the adjusting cavity 514. The diameter of the sealing seat 611 is larger than the diameter of the inner wall of channel 1 512 or channel 2 513, and sealing gaskets are provided on the opposite ends of channel 1 512 and channel 2 513.

[0042] The working principle of the control component 6 is that when the lifting rod 515 moves downward, it drives the connecting seat 516, the transition seat 616, the wedge seat 617, the adjustment seat 614 and the sealing seat 611 to move downward synchronously, so that the sealing seats 611 at both ends are fitted with the outer walls of the channel 1 512 and the channel 2 513. At this time, the bottom end of the adjustment seat 614 will abut on the abutment seat 621, and then the lifting rod 515 is controlled to continue to move downward, so that the magnetic block 1 618 and the magnetic block 2 619 are separated, and then the wedge seat 617 is driven to move downward. Under the cooperation of the wedge seat 617 and the wedge surface 615, the adjusting seats 614 at both ends are driven to move back to back, and at the same time, the sealing seats 611 at both ends are driven to move back to back, so that the sealing seats 611 are tightly abutted against the outer walls of the channel 1 512 and the channel 2 513, thereby improving the sealing after the channel 1 512 and the channel 2 513 are cut off;

[0043] When the lifting rod 515 moves upward, it drives the connecting seat 516, the transition seat 616 and the wedge seat 617 to move upward. During the upward movement of the wedge seat 617, under the action of the return spring 612 and the auxiliary spring 620, the adjustment seat 614 and the sealing seat 611 at both ends thereof move relatively and separate from the outer walls of channel 1 512 and channel 2 513. Then the magnetic block 1 618 and the magnetic block 2 619 are attracted, and the lifting rod 515 is continuously controlled to move upward, which can drive the adjustment seat 614 and the sealing seat 611 to move upward into the cavity 517, so that the channel 1 512 and the channel 2 513 are connected and adjusted.

[0044] Combined with Figure 2 , Attachment Figure 8 and attached Fig. 9As shown, the interlocking assembly 7 includes a hinged seat 711 arranged on the top sealing plate 116, a rocker arm 712 is hinged on the hinged seat 711, and sliders 713 are slidably provided at both ends of the bottom surface of the rocker arm 712. The top end of one lifting rod 515 is hinged on the corresponding slider 713, and a tooth plate 519 is fixed on the top surface of the other lifting rod 515. The top end of the tooth plate 519 is hinged on the corresponding slider 713, and a U-shaped frame 520 is fixed on the top sealing plate 116 corresponding to the tooth plate 519. A rotating shaft 521 is passed through the U-shaped frame 520 and a gear 522 meshing with the tooth plate 519 is provided on the rotating shaft 521, and a positioning assembly 8 for fixing the rotating shaft 521 is provided on the top sealing plate 116.

[0045] The working principle of the interlocking component 7 is as follows: first, the positioning of the rotating shaft 521 is released. Under the action of external force, one end of the swing rod 712 is manually controlled to swing upward. Under the action of the slider 713 and the lifting rod 515 and the slider 713 and the tooth plate 519 hinge, the lifting rod 515 at one end is driven to move upward, and at the same time, the lifting rod 515 at the other end is moved downward. At this time, the lifting rod 515 moving upward will drive the sealing seat 611 connected thereto to move upward into the cavity 517, so that the channel 1 512 and the channel 2 513 are connected. The lifting rod 515 moving downward will drive the sealing seat 611 connected thereto to move downward into the adjustment cavity 514, so that the sealing seats 611 at both ends are tightly fitted with the outer walls of the channel 1 512 and the channel 2 513, so that the channel 1 512 and the channel 2 513 are cut off and adjusted. After the adjustment is completed, the rotating shaft 521 is positioned and adjusted, thereby improving the convenience of operation of the device.

[0046] Combined with Figure 8 and attached Fig. 9 As shown, the positioning assembly 8 includes a brake disc 811 fixedly arranged at the end of the rotating shaft 521, a U-shaped seat 812 surrounding the brake disc 811 is fixedly arranged on the top sealing plate 116, guide rods 813 are slidably arranged at both ends of the U-shaped seat 812, and brake pads 814 for abutting the brake disc 811 are fixedly arranged at the opposite ends of the two guide rods 813, and the two brake pads 814 are each provided with an extension seat 815, and the two extension seats 815 are each hinged with a swing arm 816, and the other ends of the two swing arms 816 are hinged together on a moving seat 817, and an adjusting screw 818 is threadedly connected to the U-shaped seat 812 and rotatably cooperates with the moving seat 817.

[0047] The working principle of the positioning assembly 8 is to rotate the adjusting screw 818 to drive the moving seat 817 to slide forward and backward, and under the action of the hinged swing arms 816 at both ends, the brake pads 814 at both ends are driven to move relative to or away from each other, thereby fixing or releasing the brake disc 811, and at the same time fixing or releasing the rotating shaft 521 and the gear 522.

[0048] Combined with Figure 2 As shown, a mounting groove 1 211 and a mounting groove 2 411 are provided on the left sealing plate 112 and the right sealing plate 115 corresponding to the channel 1 512, and the air intake fan 212 and the exhaust fan 412 are respectively connected to the mounting groove 1 211 and the mounting groove 2 411. The setting of the mounting groove 1 211 and the mounting groove 2 411 can ensure the stability of the air intake fan 212 and the exhaust fan 412 after connection.

[0049] When the present invention is implemented, firstly, the negative pressure chamber 4 and the equipment installation chamber 3 are selectively connected or disconnected, and the positive pressure chamber 2 and the equipment installation chamber 3 are disconnected or connected according to the needs of the use scene. When used in a low dust environment, the negative pressure chamber 4 and the equipment installation chamber 3 are connected, and the positive pressure chamber 2 and the equipment installation chamber 3 are disconnected. The exhaust fan 412 is started, and the air in the equipment installation chamber 3 can be discharged to the outside through the channel 1 512 and the channel 2 513, so that the equipment installation chamber 3 forms a negative pressure state. At this time, the external air enters the equipment installation chamber 3 from the vent 1 17 to dissipate heat from the equipment inside.

[0050] When used in a dusty environment, the positive pressure chamber 2 is connected to the equipment installation chamber 3, the negative pressure chamber 4 is disconnected from the equipment installation chamber 3, and the two air intake fans 212 are started at the same time, so that the external air can enter the equipment installation chamber 3 through the channel 1 512 and the channel 2 513, so that the equipment installation chamber 3 forms a positive pressure state, and then the air is discharged to the outside through the vent 1 17. During the discharge process, the dust in the surrounding air is blown away, so that not only the internal equipment can be cooled, but also a large amount of dust in the external air can be prevented from entering the equipment installation chamber 3;

[0051] In addition, when used in a high temperature environment, the adjustment components 5 at both ends are placed in a half-open state at the same time, and the intake fan 212 and the exhaust fan 412 are started at the same time. This can increase the air circulation inside the chassis 1 and achieve better heat dissipation effects, thereby increasing the scope of use of the device.

[0052] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A dustproof welding machine, comprising a chassis (1), the chassis (1) comprising a base (111) and a left sealing plate (112) and a right sealing plate (115) at the left and right ends of the base (111), a top sealing plate (116) which is sealed and matched with the base (111) is sleeved on the top surface of the left sealing plate (112) and the right sealing plate (115), and is characterized in that: The base (111) is provided with a partition plate 1 (113) and a partition plate 2 (114) from left to right in sequence, and the partition plate 1 (113) and the partition plate 2 (114) divide the interior of the chassis (1) into mutually independent positive pressure chambers (2), equipment installation chambers (3) and negative pressure chambers (4); The positive pressure chamber (2) and the negative pressure chamber (4) are both provided with an adjustment component (5) that is connected to or disconnected from the equipment installation chamber (3); an interlocking component (7) is provided between the opening and closing of the two adjustment components (5) and the closing and opening; and a ventilation hole (117) is provided on both the front and rear sides of the top sealing plate (116) corresponding to the equipment installation chamber (3); The regulating assembly (5) comprises a T-shaped housing (511) arranged in the positive pressure chamber (2) and the negative pressure chamber (4), the housing (511) having a channel one (512) and a channel two (513) symmetrically arranged at both ends, a guide cover (518) communicating with the channel one (512) close to the left sealing plate (112), and an air intake fan (212) is arranged at both upper and lower ends of the guide cover (518) on the left sealing plate (112), an exhaust fan (412) communicating with another channel one (512) is arranged on the right sealing plate (115), a filter screen (213) is arranged on the end surface of the top sealing plate (116) close to the air intake fan (212), and a ventilation opening two (118) communicating with the channel two (513) is opened on both the partition plate one (113) and the partition plate two (114); An adjusting cavity (514) is provided between opposite ends of channel one (512) and channel two (513); a lifting rod (515) is slidably provided on a housing (511) corresponding to the adjusting cavity (514); a connecting seat (516) is provided on the bottom surface of the lifting rod (515); and a control component (6) for connecting or disconnecting channel one (512) and channel two (513) is provided on the connecting seat (516); The control assembly (6) comprises sealing seats (611) arranged at both ends of the adjustment chamber (514), a return spring (612) is fixedly arranged between the two sealing seats (611), telescopic rods (613) are arranged at both ends of the connection seat (516), the two telescopic rods (613) are slidably connected to the corresponding sealing seats (611), and Z-shaped adjustment seats (614) are symmetrically fixedly arranged at opposite ends of the two sealing seats (611) below the connection seat (516), and the two adjustment seats (61 4) wedge-shaped surfaces (615) are provided at the opposite ends, a transition seat (616) is provided on the bottom surface of the connecting seat (516), a wedge-shaped seat (617) matched with the wedge-shaped surface (615) is provided on the transition seat (616), a magnetic block 1 (618) is provided at both ends of the top surface of the wedge-shaped seat (617), a magnetic block 2 (619) matched with the magnetic block 1 (618) is provided on the top walls of the two adjustment seats (614), and a cavity (517) for the sealing seat (611) to extend into is opened in the shell (511).

2. A dustproof welding machine according to claim 1, characterized in that: An auxiliary spring (620) is fixedly arranged between the opposite end surfaces of the two sealing seats (611), an abutting seat (621) abutting against the adjusting seat (614) is arranged on the bottom wall of the adjusting cavity (514), and the diameter of the sealing seat (611) is larger than the diameter of the inner wall of the first channel (512) or the second channel (513).

3. A dustproof welding machine according to claim 1 or 2, characterized in that: The interlocking assembly (7) comprises a hinge seat (711) arranged on a top sealing plate (116), a rocker (712) being hinged on the hinge seat (711), sliders (713) being slidably arranged at both ends of the bottom surface of the rocker (712), a top end of one lifting rod (515) being hinged on the corresponding slider (713), a tooth plate (519) being fixedly arranged on the top surface of the other lifting rod (515), a top end of the tooth plate (519) being hinged on the corresponding slider (713), a U-shaped frame (520) being fixedly arranged on the top sealing plate (116) corresponding to the tooth plate (519), a rotating shaft (521) being passed through the U-shaped frame (520), a gear (522) being arranged on the rotating shaft (521) and meshing with the tooth plate (519), and a positioning assembly (8) for fixing the rotating shaft (521) is arranged on the top sealing plate (116).

4. A dustproof welding machine according to claim 3, characterized in that: The positioning assembly (8) comprises a brake disc (811) fixedly arranged at the end of the rotating shaft (521); a U-shaped seat (812) surrounding the brake disc (811) is fixedly arranged on the top sealing plate (116); guide rods (813) are slidably arranged at both ends of the U-shaped seat (812); brake pads (814) for abutting against the brake disc (811) are fixedly arranged at the opposite ends of the two guide rods (813); extension seats (815) are arranged on the two brake pads (814); swing arms (816) are hingedly connected to the two extension seats (815); the other ends of the two swing arms (816) are hingedly connected to the movable seat (817); and an adjusting screw (818) is threadedly connected to the U-shaped seat (812) and is rotatably matched with the movable seat (817).

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