Gas sampling device for waste gas detection

Abstract

The utility model discloses a gas sampling device for waste gas detection, which belongs to the technical field of waste gas detection and comprises a bottom plate, supporting rods arranged on two sides of the bottom plate, a bearing plate placed at the upper ends of the supporting rods, a shell arranged on the upper side of the bearing plate, a sliding groove formed in one side of the shell, a sampling mechanism slidably connected in the sliding groove, and a sampler mounted on the upper side of the shell. The sampling mechanism carries out gas separate sampling through a sampler. According to the waste gas collecting device, the plurality of collecting pipes are arranged on the fixing plate, different waste gases are separately stored, meanwhile, the fixing plate slides in the sliding groove, so that the collecting pipes can move to the gas conveying pipe one by one for gas collection, and after the collecting pipes filled with the waste gases move, the gas conveying pipe is sealed by the sealing cover; meanwhile, along with the movement of the fixed plate, the collecting pipe moves out of the shell, so that the waste gas can be conveniently detected, the separated storage of the waste gas is realized, and the detection efficiency is improved at the same time.

Description

Technical Field

[0001] This utility model relates to the field of waste gas detection technology, specifically a gas sampling device for waste gas detection. Background Technology

[0002] Waste gas refers to toxic and harmful gases emitted by humans during production and daily life. In particular, chemical plants, steel mills, pharmaceutical factories, coking plants, and oil refineries emit waste gas with strong odors, which seriously pollute the environment and affect human health. In order to detect waste gas, it is necessary to use gas sampling devices to sample the waste gas.

[0003] For example, in the Chinese patent database, utility model patent application number CN202120666171.3 discloses an industrial waste gas detection and sampling device, including: a collection box; a detection and sampling mechanism disposed inside the collection box; and a waste gas inlet and outlet mechanism disposed at the upper and lower ends of the collection box for conveying waste gas into the collection box and for discharge. The collection box has a hollow rectangular structure, and its interior includes: a fixed sleeve; the detection and sampling mechanism includes: a rotating sleeve; a detection rod; and a detector; the waste gas inlet and outlet mechanism includes: a synchronization frame; a pair of synchronization crossbars; an inlet pipe disposed at the end of one of the two synchronization crossbars at its highest point; and an outlet pipe disposed at the end of one of the two synchronization crossbars at its lowest point. This device has a simple structure and can automatically and accurately sample and detect industrial waste gas, improving the detection effect.

[0004] It is known that in existing technologies, exhaust gas is introduced into a hollow rectangular box and detected by multiple detection rods to improve detection accuracy. However, this method usually targets exhaust gas from the same location, making it inconvenient to classify and store different exhaust gases. If it is necessary to collect exhaust gas from different locations or heights, it is not convenient to classify and store different exhaust gases. If the exhaust gas is stored in the same container, and after detection, the exhaust gas is discharged and then the same container is used to store other exhaust gases, it is easy for multiple exhaust gases to mix, affecting detection accuracy and reducing detection efficiency. Utility Model Content

[0005] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a gas sampling device for exhaust gas detection. This device uses a fixed plate to move multiple collection tubes to the gas delivery pipe to receive exhaust gas, and uses a sealing cap to seal the collection tubes, thereby achieving the purpose of separating and storing different exhaust gases.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: it includes a base plate, with support rods on both sides of the base plate, a bearing plate placed on the upper end of the support rods, a housing on the upper side of the bearing plate, a sliding groove on one side of the housing, a sampling mechanism slidably connected in the sliding groove, a sampler installed on the upper side of the housing, and the sampling mechanism performing gas separation sampling through the sampler.

[0007] Preferably, the sampling mechanism includes a fixed plate slidably connected to the chute, a plurality of collection tubes are provided on the fixed plate, and an exhaust pipe is provided at the lower end of the collection tubes.

[0008] Preferably, the air outlet of the sampler is connected to an air supply pipe, the air outlet of the air supply pipe is embedded in the upper wall of the housing, and an air intake hood is provided at the air inlet of the sampler.

[0009] Preferably, a movable groove is formed on one side of the gas transmission pipe in the housing, and a sealing cover is slidably disposed in the movable groove, the sealing cover being fitted to the upper end of the collection pipe.

[0010] Preferably, a limiting groove is formed on one side of the sealing cover, a slide bar is slidably arranged in the limiting groove, a slider is provided on one side of the slide bar, and an insertion hole is formed at the lower end of the slider.

[0011] Preferably, a push plate is provided on one side of the fixing plate, and an insertion rod is provided at the upper end of the push plate, the insertion rod being inserted into the insertion hole.

[0012] Preferably, lifting grooves are provided on both sides of the slider, the lifting grooves are slidably connected to the protrusions provided on the slider, and the protrusions are connected to the bottom of the lifting grooves by springs.

[0013] Preferably, a second lead screw is rotatably disposed within the groove, and the second lead screw is threadedly connected to one end of the fixed plate.

[0014] Preferably, a hollow rod is provided at the center of the base plate, and a lifting rod is slidably provided inside the hollow rod. The upper end of the lifting rod is connected to the bearing plate, and a first lead screw is rotatably provided at the center inside the hollow rod. The first lead screw is threadedly connected to the lifting rod.

[0015] Preferably, a slide rail is provided on one side of the support plate, and a rack is slidably arranged in the slide rail. The upper end of the rack is fixed to one end of the air intake hood, and a gear is rotatably arranged on the upper end of the slide rail, the gear meshing with the rack.

[0016] 1. The beneficial effects of this utility model are as follows: By setting multiple collection tubes on the fixed plate, different waste gases can be stored separately. At the same time, by utilizing the sliding of the fixed plate in the chute, the collection tubes can be moved one by one to the gas delivery pipe for gas collection. Then, when the collection tube containing waste gas moves, the gas delivery pipe is sealed with a sealing cover. Simultaneously, as the fixed plate moves, the collection tube moves out of the housing, which facilitates the detection of waste gas. This not only achieves the separate storage of waste gas but also improves the detection efficiency.

[0017] 2. The beneficial effects of this utility model are as follows: When the slider is pressed down, the push plate moves with the insertion rod, and the insertion rod is inserted into the insertion hole. When the fixed plate continues to move, the push plate pushes the sealing cover to move together, thus completing the continuous sealing of the collection tube. When the push plate moves back to the side of the limiting groove, the slider is restricted by the limiting groove, causing the insertion rod to separate from the insertion hole. With the elastic extension and contraction of the spring, the slider is reset, thus not affecting the reset operation of the collection tube. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the overall structure of a gas sampling device for exhaust gas detection provided in an embodiment of this utility model.

[0020] Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present utility model.

[0021] Figure 3 This is a cross-sectional view of the hollow rod structure according to an embodiment of the present utility model.

[0022] Figure 4 This is a schematic diagram of the shell structure of an embodiment of the present utility model.

[0023] Figure 5 This is a schematic diagram of the internal structure of the shell in an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the sampling mechanism structure according to an embodiment of the present utility model.

[0025] Figure 7 This is a schematic diagram of the sealing plate structure according to an embodiment of the present utility model.

[0026] Figure 8 This is a schematic diagram of the slider structure according to an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100-Base plate; 110-Support rod; 120-Hollow rod; 121-First lead screw; 122-Lifting rod; 130-Bearing plate; 200-Housing; 210-Slide groove; 220-Second lead screw; 230-Moving groove; 300-Sampling mechanism; 310-Fixing plate; 320-Collection tube; 330-Exhaust pipe; 340-Push plate; 350-Insertion rod; 400-Sampler; 410-Suction hood; 420-Gas delivery pipe; 500-Slide rail; 510-Rack; 520-Gear; 600-Sealing cover; 610-Slider; 611-Slide bar; 612-Insertion hole; 613-Protrusion; 620-Lifting groove; 630-Spring; 640-Limiting groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figure 1 As shown, this utility model provides a gas sampling device for exhaust gas detection, including a base plate 100, support rods 110 on both sides of the base plate 100, a bearing plate 130 placed on the upper end of the support rods 110, and a housing 200 on the upper side of the bearing plate 130.

[0032] like Figure 4 As shown, a groove 210 is provided on one side of the housing 200, and a sampling mechanism 300 is slidably connected in the groove 210. Specifically, the sampling mechanism 300 includes a fixed plate 310 slidably connected to the groove 210. Multiple collection tubes 320 are provided on the fixed plate 310. The collection tubes 320 are used to store waste gas. Multiple collection tubes 320 can store different types of waste gas, thereby improving the detection effect. An exhaust pipe 330 is provided at the lower end of the collection tube 320. The exhaust pipe 330 is normally in a sealed state, but can be opened when exhaust is required.

[0033] The fixed plate 310 can move along with the collection tube 320. After the collection tube 320 is moved to the outside of the housing 200, it is convenient to detect the exhaust gas. Therefore, a second lead screw 220 is rotatably set in the slide groove 210. The second lead screw 220 is threadedly connected to one end of the fixed plate 310. When the second lead screw 220 rotates, the fixed plate 310 can move, which improves the stability of the fixed plate 310.

[0034] In order to collect exhaust gas, a sampler 400 is installed on the upper side of the housing 200. The outlet of the sampler 400 is connected to the gas supply pipe 420. The outlet of the gas supply pipe 420 is embedded in the upper wall of the housing 200. When the collection pipe 320 moves to the outlet of the gas supply pipe 420, it can fit with the outlet to reduce exhaust gas leakage. An air intake hood 410 is provided at the air inlet of the sampler 400.

[0035] like Figure 5 As shown, in order to seal the collection pipe 320 containing exhaust gas, a movable groove 230 is opened on the side of the housing 200 located on the gas transmission pipe 420. A sealing cover 600 is slidably installed in the movable groove 230. When the collection pipe 320 moves to the lower side of the sealing cover 600, the sealing cover 600 fits against the upper end of the collection pipe 320 to seal it.

[0036] For further details, please refer to... Figure 7 A limiting groove 640 is provided on one side of the sealing cover 600. A slide bar 611 is slidably arranged in the limiting groove 640. A slider 610 is provided on one side of the slide bar 611. When multiple collection tubes 320 have moved to the lower side of the sealing cover 600, the slider 610 is slid down and enters the interior of the housing 200.

[0037] like Figure 6 As shown, since the lower end of the slider 610 has an insertion hole 612, and the side of the fixed plate 310 has a push plate 340, and the upper end of the push plate 340 has an insertion rod 350, when the push plate 340 and the insertion rod 350 move continuously, the insertion rod 350 is inserted into the insertion hole 612. Therefore, when the fixed plate 310 moves continuously with the collection tube 320, the push plate 340 pushes the sealing cover 600 to move together, thereby continuously sealing the collection tube 320.

[0038] Furthermore, lifting grooves 620 are provided near both sides of the slider 610, and the lifting grooves 620 are slidably connected to the protrusions 613 provided on the slider 610 (e.g., Figure 8 As shown, the protrusion 613 is connected to the bottom of the lifting groove 620 by a spring 630. When the slider 610 slides down, the protrusion 613 squeezes the spring 630. The spring 630 can not only limit the downward sliding distance of the slider 610 so that the insertion rod 350 is inserted into the insertion hole 612, but also cause the slider 610 to reset when the insertion rod 350 separates from the insertion hole 612, so as not to affect the back movement of the collection tube 320.

[0039] The working principle of the above embodiment is as follows: When the sampler 400 collects waste gas, it rotates the second lead screw 220, causing the fixed plate 310 to move with the collection tube 320 to the lower side of the gas delivery pipe 420 to store the waste gas. After one type of waste gas is collected, different waste gases are collected again using the same method. The upper fixed plate 310 needs to move with the collection tube 320 to the lower side of the sealing cover 600, where the sealing cover 600 seals the collection tube 320. After the collection tube 320 has moved completely to the lower side of the sealing cover 600, the slider 610 slides downward. As the push plate 340 moves, it causes the insertion rod 350 to be inserted into the insertion hole 612. At this time, the protrusion 613 compresses the spring 630. As the fixing plate 310 moves continuously, the push plate 340 pushes the sealing cover 600 out of the housing 200, so that the sealing cover 600 always seals the collection tube 320. When the detection is completed and the air is vented, the second lead screw 220 is flipped, causing the fixing plate 310 to move back, thereby separating the insertion rod 350 from the insertion hole 612. At this time, after the spring 630 loses its force, it causes the slider 610 to reset, and the collection tube 320 can also move to its original position.

[0040] Example 2:

[0041] Based on Example 1, in order to collect exhaust gas at different heights, a hollow rod 120 is installed at the center of the base plate 100, such as... Figure 3 As shown, a lifting rod 122 is slidably installed inside the hollow rod 120. The upper end of the lifting rod 122 is connected to the bearing plate 130. A first lead screw 121 is rotatably installed at the center inside the hollow rod 120. The first lead screw 121 is threadedly connected to the lifting rod 122. The first lead screw 121 is driven by a bottom motor. When the first lead screw 121 rotates, the lifting rod 122 moves upward with the bearing plate 130 and the above parts, so as to collect exhaust gas at different heights.

[0042] Example 3:

[0043] Based on Example 2, such as Figure 2 As shown, a slide rail 500 is provided on one side of the support plate 130, and a rack 510 is slidably arranged in the slide rail 500. The upper end of the rack 510 is fixed to one end of the suction hood 410. A gear 520 is rotatably arranged on the upper end of the slide rail 500. The gear 520 meshes with the rack 510. By rotating the gear 520, the gear 520 meshes with the rack 510, causing the rack 510 to move upward with the suction hood 410, which assists in the secondary adjustment of the height of the suction hood 410 in the above embodiment.

[0044] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A gas sampling device for exhaust gas detection, comprising a base plate, support rods provided on both sides of the base plate, and a bearing plate placed on the upper end of the support rods, characterized in that, A housing is provided on the upper side of the support plate, and a sliding groove is opened on one side of the housing. A sampling mechanism is slidably connected in the sliding groove, and a sampler is installed on the upper side of the housing. The sampling mechanism performs gas separation sampling through the sampler.

2. The gas sampling device for exhaust gas detection as described in claim 1, characterized in that, The sampling mechanism includes a fixed plate that is slidably connected to a chute, and a plurality of collection tubes are provided on the fixed plate, with an exhaust pipe at the lower end of each collection tube.

3. The gas sampling device for exhaust gas detection as described in claim 2, characterized in that, The sampler's outlet is connected to a gas supply pipe, the outlet of which is embedded in the upper wall of the housing, and an air intake hood is provided at the sampler's inlet.

4. The gas sampling device for exhaust gas detection as described in claim 3, characterized in that, The housing has a movable groove on one side of the gas transmission pipe, and a sealing cover is slidably installed in the movable groove. The sealing cover is attached to the upper end of the collection pipe.

5. The gas sampling device for exhaust gas detection as described in claim 4, characterized in that, A limiting groove is provided on one side of the sealing cover, a slide bar is slidably arranged in the limiting groove, a slider is provided on one side of the slide bar, and an insertion hole is provided at the lower end of the slider.

6. The gas sampling device for exhaust gas detection as described in claim 5, characterized in that, A push plate is provided on one side of the fixing plate, and an insertion rod is provided at the upper end of the push plate. The insertion rod is inserted into the insertion hole.

7. The gas sampling device for exhaust gas detection as described in claim 6, characterized in that, The slider has lifting grooves on both sides, and the lifting grooves are slidably connected to the protrusions on the slider. The protrusions and the bottom of the lifting grooves are connected by springs.

8. The gas sampling device for exhaust gas detection as described in claim 1, characterized in that, A second lead screw is rotatably installed inside the slide groove, and the second lead screw is threadedly connected to one end of the fixed plate.

9. A gas sampling device for exhaust gas detection as described in claim 1, characterized in that, A hollow rod is provided at the center of the base plate, and a lifting rod is slidably arranged inside the hollow rod. The upper end of the lifting rod is connected to the bearing plate. A first lead screw is rotatably arranged at the center inside the hollow rod, and the first lead screw is threadedly connected to the lifting rod.

10. A gas sampling device for exhaust gas detection as described in claim 3, characterized in that, A slide rail is provided on one side of the support plate, and a rack is slidably arranged in the slide rail. The upper end of the rack is fixed to one end of the air intake hood, and a gear is rotatably arranged on the upper end of the slide rail, which meshes with the rack.

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