CN115945019A - A high-strength negative pressure collection system for workshop exhaust gas - Google Patents

Abstract

The invention provides a high-strength negative pressure collecting system for workshop waste gas, and relates to the technical field of workshop waste gas. This based on workshop is high strength negative pressure collecting system for waste gas, the power distribution box comprises a box body, the inside fixedly connected with admission pipe in bottom of box one side, the mouth is collected to admission pipe one side fixedly connected with waste gas, it is provided with the clearance brush to admit air filter screen one side, the first filter screen of box inner wall fixedly connected with and second filter screen, the qualified gas inlet port of the inside middle part fixedly connected with in box top, the equal fixedly connected with spray pipe in nozzle top, primary gas detector bottom end fixedly connected with control panel, control panel bottom end fixedly connected with secondary gas detector. Through carrying out high strength negative pressure to workshop waste gas and collect and the waste gas inlet port carries out impurity filtering through the filter screen, in addition through secondary detection during the purification, make its waste gas of being convenient for collect with purifying effect better.

Description

A high-strength negative pressure collection system for workshop exhaust gas

technical field

The invention relates to the technical field of workshop waste gas, in particular to a high-strength negative pressure collection system for workshop waste gas.

Background technique

Workshop exhaust gas refers to various gases containing pollutants that are discharged into the air during fuel combustion and production processes in the workshop. This gas will pollute the air when discharged into the atmosphere. These substances enter the human body through the respiratory tract through different routes. , some directly cause harm, and some have cumulative effects, which will endanger human health more seriously. Different substances will have different effects. Waste gas treatment is to pre-treat the waste gas from the workshop before it is discharged, so as to meet the national waste gas discharge requirements. Standard work, therefore, workshop exhaust gas treatment technology occupies a very important position in the workshop.

In the processing of workshop exhaust gas treatment technology, it is often necessary to set up exhaust gas collection and purification devices. If the collected exhaust gas is not completely purified, it will affect the air quality of the workshop and outdoor environment. At the same time, in the process of exhaust gas collection If the impurities in the exhaust gas are not filtered, it will affect the detection and purification of the exhaust gas, and if the impurities adhered to the filter are not treated in time, it will also affect the collection speed and purification efficiency of the exhaust gas. Secondly, the exhaust gas becomes a passing gas during the purification process. The detector is used for detection, and the detection result may sometimes be incorrect. If a gas detector fails, the entire device will not be able to know the detection result of the exhaust gas purification, resulting in the failure of the device to operate normally.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a high-strength negative pressure collection system for waste gas in workshops, which solves the problems of waste gas collection and mixed collection of impurities in the waste gas, and the failure of gas detectors.

In order to achieve the above objectives, the present invention is achieved through the following technical solutions: a high-strength negative pressure collection system for workshop waste gas, including a box body, an inlet pipe is fixedly connected to the bottom of one side of the box body, and one side of the inlet pipe An exhaust gas collection port is fixedly connected, and an air intake filter is fixedly connected to one side of the exhaust gas collection port, and a cleaning brush is arranged on one side of the air intake filter, and a first filter screen and a second filter screen are fixedly connected to the inner wall of the box. A filter screen, the inner middle part of the top of the box is fixedly connected with a qualified gas inlet, the four corners of the top of the box are fixedly connected with nozzles, and the tops of the nozzles are fixedly connected with spray pipes, and the top of the front side of the box is A primary gas detector is fixedly connected inside, a control panel is fixedly connected to the bottom end of the primary gas detector, and a secondary gas detector is fixedly connected to the bottom end of the control panel.

Preferably, the top of the cleaning brush is fixedly connected with a fixing plate, the top of the fixing plate is fixedly connected with a connecting plate, the front side of the connecting plate is fixedly connected with a threaded sleeve, and the rear side of the connecting plate is fixedly connected with a sliding sleeve. Both the sliding sleeve and the outer wall of the screw sleeve are slidably connected with a first groove, the inner wall of the screw sleeve is threadedly connected with a screw, the bottom of the outer wall of the screw is rotatably connected with a support plate, and the top of the screw is fixedly connected with a servo motor, and the servo motor The outer wall is fixedly connected to the inside of the top of the support plate, the inner wall of the sliding sleeve is slidably connected to a fixed rod, and the two ends of the fixed rod are respectively fixedly connected to the top wall and the bottom wall of the first groove on the rear side, and the first groove is provided with On the inner top of the side close to the support plate, the bottom end of the support plate is fixedly connected with a sliding base, the middle part of the top of the sliding base is fixedly connected with a chip collecting support frame, and the front and rear sides of the outer wall of the chip collecting support frame are fixedly connected At the bottom of one side close to the support plate, second grooves are provided on the front, rear, upper and lower sides of the inner wall of the chip collecting support frame, and the inner walls of the second groove are slidably connected with first sliders, and the first A dust collection box is fixedly connected to one side of the slide block, and the dust collection box is located directly below the cleaning brush.

Preferably, the first filter is located directly above the second filter.

Preferably, the tops of the spraying pipes are fixedly connected with liquid connection pipes, and the bottom end of the liquid connection pipes is fixedly connected with a water pump on the side away from the inlet pipe, and the bottom end of the water pump is provided with a liquid storage tank, and the liquid storage tank The middle part inside the top end is fixedly connected with a liquid connection pipe, and one side of the liquid storage tank is fixedly connected with a box body.

Preferably, a gas connection pipe is fixedly connected to the top of the qualified gas inlet, a centrifugal negative pressure fan is fixedly connected to the rear of the gas connection pipe, and an exhaust port is fixedly connected to the top of the centrifugal negative pressure fan.

Preferably, the outer wall of the secondary gas detector is arranged inside the box, the front side of the box is located on one side of the primary gas detector and is fixedly connected with the first safety light, and the front side of the box is located on the other side of the primary gas detector The first warning light is fixedly connected, the front side of the box is located on one side of the secondary gas detector, and the second safety light is fixedly connected, and the front side of the box is located on the other side of the secondary gas detector, and the second warning light is fixedly connected , the top of the rear side of the primary gas detector is fixedly connected with a first sampling head, the top of the rear side of the secondary gas detector is fixedly connected with a second sampling head, and the rear sides of the first sampling head and the second sampling head are both set inside the box.

Preferably, a third groove is provided inside the bottom of both sides of the inner wall of the box, and a second slider is slidably connected to the inside of the third groove, and a second slider is fixedly connected to the adjacent side of the second slider. Water collection drawer.

Preferably, the control panel is arranged inside the box, and the control panel is electrically connected with a primary gas detector, a secondary gas detector, a centrifugal negative pressure fan, a servo motor and a water pump, and the primary gas detector is electrically A first safety light and a first warning light are connected, and the secondary gas detector is electrically connected with a second safety light and a second warning light.

Working principle: When it is necessary to collect and process the exhaust gas in the workshop, the device starts to run by operating the control panel. Since the intake filter on the side of the exhaust gas collection port is aligned with the interior of the workshop, the centrifugal negative pressure fan operates to filter the exhaust gas through the intake air. The net enters the box through the inlet pipe for purification. At this time, the water pump inside the liquid storage tank on the side away from the inlet pipe transfers the liquid to the spray pipe through the liquid connection pipe, and then sprays it to the nozzle. The impurities in the exhaust gas are fused, and the impurities are filtered through the second filter and dropped into the water collection drawer. After the exhaust gas is filtered through the first stage, it is filtered again through the first filter, and the impurities are also dropped into the water collection drawer. , and the water collection drawer can be drawn out through the combination of the third groove and the second slider, so as to achieve the effect of easy collection and treatment of impurities, so as to achieve the purification effect, and after the first stage of filtration, pass through the second stage on the front side of the box. The second sampling head connected to the secondary gas detector is used for detection. If the detection is qualified, the second safety light will light up. If the detection fails, the second warning light will light up. After the secondary filter, it passes through the front side of the box and is located above the first filter net. The first sampling head connected to the primary gas detector is used for secondary detection, and the qualified and unqualified detection results are still displayed by the first safety light and the first warning light. If the secondary detection is passed, the gas will enter through the qualified gas inlet. Leading to the gas connection pipe, the gas is discharged through the exhaust port on the top of the centrifugal negative pressure fan. When the device continuously collects the exhaust gas, it is inevitable that there will be many impurities on the intake filter. At this time, by moving the sliding base Move the cleaning device to the side of the air intake filter, the side of the support plate on both sides of the top of the sliding base is close to a fixed rod and a screw rod are respectively set through the first groove, the sliding sleeve combined with the fixed rod and the screw rod combined The connecting plate connected by the screw sleeve moves up and down through the operation of the servo motor at the top of the screw, and the connecting plate can clean the surface of the air intake filter through the combination of the fixing plate and the cleaning brush, and then the impurities fall to the internal connection of the chip collecting support frame. Inside the dust collection box, the dust collection box can be drawn out through the combination with the first slider and the second groove to facilitate the treatment of impurities.

The invention provides a high-strength negative pressure collection system for waste gas in a workshop. Has the following beneficial effects:

1. In the present invention, under the operation of the centrifugal negative pressure fan, the workshop exhaust gas enters the box through the exhaust gas collection port and the inlet pipe. At this time, the operation of the water pump makes the liquid in the liquid storage tank lead to the spray pipe through the liquid connection pipe , sprayed through the nozzle, and then fuse the impurities in the exhaust gas of the workshop inside the box, and through the combination of the second filter and the first filter, the impurities can fall into the water collection drawer, and the collected exhaust gas can be completely Purification, the purified and qualified gas is discharged through the exhaust port, so as to achieve the effect of guaranteed air quality in the workshop and outdoor environment.

2. In the present invention, by setting an intake filter on the side of the exhaust gas collection port, it can filter the impurities in the exhaust gas during the process of exhaust gas collection, so as to achieve the effect of not affecting the detection and purification of exhaust gas, and the intake air The front side of the filter screen is driven by a servo motor to rotate the screw. The screw drives the screw sleeve to move up and down. The screw sleeve is combined with the sliding sleeve on the outer wall of the fixed rod through the connecting plate to make the cleaning brush connected to the fixed plate at the bottom of the connecting plate move up and down stably. The cleaning brush cleans all the impurities on the surface of the air intake filter, and the cleaned impurities fall into the dust collecting box connected to the inside of the dust collection support frame, so that it can promptly dispose of the impurities adhered to the filter, so as to achieve the goal of exhaust gas The collection speed and purification efficiency are not affected.

3. The present invention detects the exhaust gas once through the combination of the secondary gas detector and the second sampling head after the primary filtration, and the qualified and unqualified detection results are displayed and reminded by the second safety light and the second warning light, and the two After the first filtration, the exhaust gas is tested again through the combination of the gas detector and the first sampling head. The test results are displayed by the first safety light and the first warning light to remind whether it is qualified or not. The second test can make the test results more accurate. Accurate, there will be no false detection, and if one of the gas detectors fails, the other will operate normally, so that the device can continuously display the detection results of exhaust gas purification, so as to achieve the effect of stable and continuous normal operation of the device.

Description of drawings

Fig. 1 is the front perspective view of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is a side view of the present invention;

Fig. 4 is a side sectional view of the cleaning structure of the present invention;

Fig. 5 is a side sectional view of the waste gas collection structure of the present invention;

Fig. 6 is a schematic side view sectional view of the water tank structure of the present invention;

Figure 7 is an enlarged view of A in Figure 4;

Figure 8 is an enlarged view at B in Figure 4;

Fig. 9 is an enlarged view of point C in Fig. 5 .

Among them, 1. Connecting plate; 2. Fixed plate; 3. Cleaning brush; 4. Air intake filter; 5. Dust collection box; 6. Support plate; 7. Fixed rod; 8. Sliding sleeve; ;10, inlet pipe; 11, gas connecting pipe; 12, spray pipe; 13, first safety light; 14, liquid connecting pipe; 15, sliding base; 16, centrifugal negative pressure fan; 17, exhaust port; 18 , box body; 19, water collection drawer; 20, second safety light; 21, primary gas detector; 22, first warning light; 23, control panel; 24, second warning light; 25, secondary gas detector ; 26, liquid storage tank; 27, servo motor; 28, screw rod; 29, the first groove; 30, chip collection support frame; 31, the first slide block; 32, the second groove; The first sampling head; 35, the first filter screen; 36, the second sampling head; 37, the second filter screen; 38, the third groove; 39, the second slider; 40, the water pump; 41, the qualified gas inlet ; 42, screw sleeve.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example:

As shown in Figures 1-9, the embodiment of the present invention provides a high-strength negative pressure collection system for workshop exhaust gas, which includes a box body 18, and an inlet pipe 10 is fixedly connected to the bottom of one side of the box body 18, and one side of the inlet pipe 10 is fixed Connected with the waste gas collection port 9, the side of the waste gas collection port 9 is fixedly connected with the intake filter 4, the side of the intake filter 4 is provided with a cleaning brush 3, and the inner wall of the box body 18 is fixedly connected with the first filter screen 35 and the second The filter screen 37, the inner middle part of the top of the box body 18 is fixedly connected with a qualified gas inlet 41, the four corners of the top of the box body 18 are fixedly connected with nozzles 33, and the tops of the nozzles 33 are fixedly connected with a spray pipe 12, and the top of the front side of the box body 18 The interior is fixedly connected with a primary gas detector 21, the bottom end of the primary gas detector 21 is fixedly connected with a control panel 23, and the bottom end of the control panel 23 is fixedly connected with a secondary gas detector 25, and the workshop exhaust gas is filtered through the intake filter 4 The exhaust gas can enter the box body 18 through the combination of the exhaust gas collection port 9 and the inlet pipe 10, and the impurities adhered to the surface of the air intake filter screen 4 are cleaned by the cleaning brush 3, and the first filter screen 35 is installed inside the box body 18. And the second filter screen 37 can carry out secondary filtration to exhaust gas, and the impurity that filters is the nozzle 33 that combines with spray pipe 12 to carry out liquid spraying, and exhaust gas impurity can be merged with liquid and then falls after filtering, and the side of double-layer filter screen A primary gas detector 21 and a secondary gas detector 25 are respectively provided for multiple detections.

The top of cleaning brush 3 is fixedly connected with fixed plate 2, the top of fixed plate 2 is fixedly connected with connecting plate 1, the front side of connecting plate 1 is fixedly connected with screw sleeve 42, the rear side of connecting plate 1 is fixedly connected with sliding sleeve 8, sliding sleeve 8 and The outer wall of the screw sleeve 42 is slidingly connected with the first groove 29, the inner wall of the screw sleeve 42 is threadedly connected with the screw rod 28, the bottom of the outer wall of the screw rod 28 is rotatably connected with the support plate 6, and the top of the screw rod 28 is fixedly connected with the servo motor 27, and the outer wall of the servo motor 27 is fixed. Connected to the inside of the top of the support plate 6, the inner wall of the sliding sleeve 8 is slidably connected to the fixed rod 7, and the two ends of the fixed rod 7 are respectively fixedly connected to the top wall and the bottom wall of the first groove 29 on the rear side, and the first grooves 29 are all arranged on the support The board 6 is close to the inner top of one side, the bottom of the support board 6 is fixedly connected with a sliding base 15, the middle part of the top of the sliding base 15 is fixedly connected with a chip collection support frame 30, and the front and rear sides of the outer wall of the chip collection support frame 30 are all fixedly connected to the support. The plate 6 is close to the bottom of one side, and the inner wall of the chip collecting support frame 30 is provided with a second groove 32 on the front, rear, upper and lower sides, and the inner wall of the second groove 32 is slidably connected with a first slider 31. The dust collection box 5 is fixedly connected to one side, the dust collection box 5 is located directly below the cleaning brush 3, and the moving sliding base 15 moves the cleaning device to the air intake filter screen 4 side, and the support on both sides of the sliding base 15 top A fixed rod 7 and a screw rod 28 are respectively arranged inside the adjacent side of the plate 6 through the first groove 29, and the connecting plate 1 connected with the sliding sleeve 8 combined with the fixed rod 7 and the screw sleeve 42 combined with the screw rod 28 passes through the top of the screw rod 28 The servo motor 27 runs to move up and down, and the connecting plate 1 can clean the surface of the air intake filter 4 through the combination of the fixed plate 2 and the cleaning brush 3, and then the impurities fall to the dust collecting box connected inside the dust collecting support frame 30 5 inside, and the dust box 5 can be drawn out by combining with the first slider 31 and the second groove 32 to facilitate the treatment of impurities.

The first filter screen 35 is located directly above the second filter screen 37, the second filter screen 37 is for primary filtering of exhaust gas, and the first filter screen 35 is for secondary filtering of exhaust gas.

The tops of the spray pipes 12 are fixedly connected with a liquid connection pipe 14, and the bottom end of the liquid connection pipe 14 is fixedly connected with a water pump 40 on the side away from the inlet pipe 10. The liquid connection pipe 14 is fixedly connected, and the tank 18 is fixedly connected to one side of the liquid storage tank 26. The water pump 40 is a machine for conveying liquid. The shower pipe 12, and the connection between the liquid storage tank 26 and the box body 18 can be more stable, so as to achieve the effect of spraying the exhaust gas inside the box body 18.

The top of the qualified gas inlet 41 is fixedly connected with a gas connecting pipe 11, and the rear side of the gas connecting pipe 11 is fixedly connected with a centrifugal negative pressure fan 16. The top of the centrifugal negative pressure fan 16 is fixedly connected with an exhaust port 17 inside. Use air convection and negative pressure ventilation to discharge the air in the room, and the exhaust gas can be collected under negative pressure. The gas after passing the test is collected through the qualified gas inlet 41, and then through the operation of the centrifugal negative pressure fan 16 to make the gas The gas is discharged through the gas connection pipe 11 and further through the exhaust port 17 .

The outer wall of the secondary gas detector 25 is arranged inside the box body 18, the front side of the box body 18 is fixedly connected to the first side of the primary gas detector 21, and the first safety light 13 is fixedly connected to it, and the front side of the box body 18 is fixedly connected to the other side of the primary gas detector 21 There is a first warning light 22, the front side of the box body 18 is located at the side of the secondary gas detector 25 and is fixedly connected with the second safety light 20, and the front side of the box body 18 is located at the other side of the secondary gas detector 25 and is fixedly connected with the second warning light 24. The top of the rear side of the primary gas detector 21 is fixedly connected with the first sampling head 34, the top of the rear side of the secondary gas detector 25 is fixedly connected with the second sampling head 36, and the rear sides of the first sampling head 34 and the second sampling head 36 They are all installed inside the box 18. The gas detector is called an exhaust gas detector. The exhaust gas detector is an instrument that can quickly detect whether the exhaust gas emission concentration is up to standard. It can detect whether the exhaust gas collected in the workshop meets the standard. The second sampling head 36 connected to the detector 25 is detected, if the detection is qualified, the second safety light 20 is lit, if the detection is unqualified, the second warning light 24 is lit, and after the secondary filtration, it passes through the front side of the box body 18 and is located at the first The first sampling head 34 connected to the primary gas detector 21 above the filter screen 35 performs secondary detection, and the qualified and unqualified detection results are still displayed by the first safety light 13 and the first warning light 22 .

The bottom of both sides of the inner wall of the box body 18 is provided with a third groove 38, the inside of the third groove 38 is slidably connected with a second slider 39, and the side of the second slider 39 is fixedly connected with a water collection drawer 19 The combination of the box body 18 with the third groove 38 and the second sliding block 39 can facilitate manual push-pull extraction, so as to achieve the effect that impurities are conveniently processed.

The control panel 23 is arranged inside the box body 18, and the control panel 23 is electrically connected with a primary gas detector 21, a secondary gas detector 25, a centrifugal negative pressure fan 16, a servo motor 27 and a water pump 40, and the primary gas detector 21 is electrically The first safety light 13 and the first warning light 22 are connected, the secondary gas detector 25 is electrically connected with the second safety light 20 and the second warning light 24, and the primary gas detector 21 and the secondary gas detector 21 are controlled by the control panel 23. The drive of detector 25, centrifugal negative pressure fan 16, servo motor 27 and water pump 40 can facilitate the effect of stable operation of the control device, and the primary gas detector 21 passes the detection result through the first safety light 13 and the first warning light 22. As a reminder, the secondary gas detector 25 displays the detection results through the second safety light 20 and the second warning light 24, so as to achieve the effect of stable operation of the device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. A high-strength negative pressure collection system for workshop exhaust gas, including a box (18), characterized in that: an inlet pipe (10) is fixedly connected to the bottom of one side of the box (18), and the inlet pipe ( 10) An exhaust gas collection port (9) is fixedly connected to one side, and an air intake filter (4) is fixedly connected to one side of the exhaust gas collection port (9), and a cleaning brush is provided on one side of the air intake filter (4) (3), the inner wall of the box body (18) is fixedly connected with the first filter screen (35) and the second filter screen (37), and the inner middle part of the top of the box body (18) is fixedly connected with a qualified gas inlet (41 ), the four corners inside the top of the box (18) are fixedly connected with nozzles (33), and the top of the nozzles (33) are fixedly connected with spray pipes (12), and the inside of the top of the front side of the box (18) A primary gas detector (21) is fixedly connected, a control panel (23) is fixedly connected to the bottom end of the primary gas detector (21), and a secondary gas detector (25) is fixedly connected to the bottom end of the control panel (23). ). 2. A high-strength negative pressure collection system for workshop exhaust gas according to claim 1, characterized in that: the top of the cleaning brush (3) is fixedly connected with a fixed plate (2), and the top of the fixed plate (2) A connecting plate (1) is fixedly connected, the front side of the connecting plate (1) is fixedly connected with a screw sleeve (42), and the rear side of the connecting plate (1) is fixedly connected with a sliding sleeve (8), and the sliding sleeve ( 8) The outer wall of the screw sleeve (42) is slidingly connected with the first groove (29), the inner wall of the screw sleeve (42) is threaded with a screw (28), and the bottom of the outer wall of the screw (28) is rotatably connected with a support plate (6), the top of the screw (28) is fixedly connected to the servo motor (27), the outer wall of the servo motor (27) is fixedly connected to the inside of the top of the support plate (6), and the inner wall of the sliding sleeve (8) is slidably connected to The fixed rod (7), the two ends of the fixed rod (7) are respectively fixedly connected to the top wall and the bottom wall of the first groove (29) on the rear side, and the first groove (29) is arranged on the support plate (6 ) close to the inner top of one side, the bottom end of the support plate (6) is fixedly connected with a sliding base (15), and the middle part of the top of the sliding base (15) is fixedly connected with a chip collection support frame (30). The front and rear sides of the outer wall of the chip support frame (30) are fixedly connected to the bottom of the side of the support plate (6), and the upper and lower parts of the inner wall of the chip collection support frame (30) are provided with second grooves (32 ), the inner wall of the second groove (32) is slidably connected with a first slider (31), and the adjacent side of the first slider (31) is fixedly connected with a dust box (5). The dust bin (5) is located directly below the cleaning brush (3). 3. The high-strength negative pressure collection system for workshop exhaust gas according to claim 1, characterized in that: the first filter (35) is located directly above the second filter (37). 4. A high-strength negative pressure collection system for workshop waste gas according to claim 1, characterized in that: the top of the spray pipe (12) is fixedly connected with a liquid connecting pipe (14), and the liquid connecting pipe (14) A water pump (40) is fixedly connected to the side far from the inlet pipe (10) at the bottom, and a liquid storage tank (26) is arranged at the bottom of the water pump (40), and the middle part of the top of the liquid storage tank (26) is fixed A liquid connection pipe (14) is connected, and a tank body (18) is fixedly connected to one side of the liquid storage tank (26). 5. A high-strength negative pressure collection system for workshop waste gas according to claim 1, characterized in that: the top of the qualified gas inlet (41) is fixedly connected with a gas connecting pipe (11), and the gas connecting pipe (11) A centrifugal negative pressure fan (16) is fixedly connected to the rear side, and an exhaust port (17) is fixedly connected to the inside of the top of the centrifugal negative pressure fan (16). 6. A high-intensity negative pressure collection system for workshop exhaust gas according to claim 1, characterized in that: the outer wall of the secondary gas detector (25) is arranged inside the box (18), and the box ( 18) The front side of the primary gas detector (21) is fixedly connected with the first safety light (13), and the front side of the box (18) is located at the primary gas detector (21) and the other side is fixedly connected with the first warning light (22), the front side of the box (18) is located at the secondary gas detector (25) and is fixedly connected with the second safety light (20), and the front side of the box (18) is located at the secondary gas detector ( 25) The other side is fixedly connected with the second warning light (24), the top of the rear side of the primary gas detector (21) is fixedly connected with the first sampling head (34), and the rear side of the secondary gas detector (25) is A second sampling head (36) is fixedly connected to the top, and the rear sides of the first sampling head (34) and the second sampling head (36) are both arranged inside the box body (18). 7. A high-strength negative pressure collection system for workshop exhaust gas according to claim 1, characterized in that: the inner wall of the box (18) is provided with a third groove (38) inside the bottom of both sides, the A second slider (39) is slidably connected inside the third groove (38), and a water collection drawer (19) is fixedly connected to one side of the second slider (39). 8. A high-strength negative pressure collection system for workshop exhaust gas according to claim 1, characterized in that: the control panel (23) is arranged inside the box body (18), and the control panel (23) is electrically A primary gas detector (21), a secondary gas detector (25), a centrifugal negative pressure fan (16), a servo motor (27) and a water pump (40) are connected, and the primary gas detector (21) is electrically connected to There are a first safety light (13) and a first warning light (22), and the secondary gas detector (25) is electrically connected with a second safety light (20) and a second warning light (24).

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