Device for detecting waste gas in chemical batching room

Abstract

The utility model discloses a waste gas detection device for a chemical batching room, which comprises a detector and a collection box, the collection box is provided with an exhaust pipe communicated with an internal gas outlet cavity, the exhaust pipe is provided with a control valve, and the end part of the exhaust pipe is detachably connected with a gas inlet of the detector; an air suction pump is mounted at an air inlet in one side of the collection box, and the air suction pump is communicated with one end of an air inlet pipe through a dust removal assembly; a folding bracket is mounted above the collecting box; a suction nozzle mounted at the end part of the folding bracket is communicated with the other end of the air inlet pipe; the dust removal assembly comprises a shell, a frame and a filter screen, the shell is installed on the outer wall of the collection box, the upper end and the lower end of the shell are communicated with an air inlet pipe and an air suction pump respectively, the frame is detachably installed in the shell, and the filter screen is clamped on the frame. The device is simple and convenient to use, and the aspirator pump of the sampling box is very convenient to maintain and the dust filter screen is very convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the field of chemical testing equipment, and in particular relates to the field of waste gas testing equipment in a chemical batching room. Background Art

[0002] The toxic and harmful waste gases emitted from chemical workshops have complex physical and chemical properties and need to be sampled and tested before being discharged. Existing chemical waste gas detection devices generally include a sampler and a detector. The sampler collects the sample gas and then connects it to the detector to detect the composition of the sample gas. The sampler of the existing detection device generally uses an air pump to suck the gas into the sampler's air storage chamber through a dust filter for storage. However, the air pump and the dust filter are both installed inside the air storage chamber. The sampler needs to be disassembled for maintenance of the air pump and replacement of the dust filter. The structural setting is unreasonable and very inconvenient to use. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model aims to provide a waste gas detection device for a chemical batching room. The device is simple and convenient to use, and the maintenance of the suction pump of the sampling box and the replacement of the dust filter are very convenient.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A waste gas detection device for a chemical batching room comprises a detector and a collection box, wherein the collection box is provided with an exhaust pipe connected to an internal air outlet cavity, a control valve is installed on the exhaust pipe, and the end of the exhaust pipe is detachably connected to the air inlet of the detector; an air suction pump is installed at the air inlet on one side of the collection box, and the air suction pump is connected to one end of the air inlet pipe through a dust removal component; a folding bracket is installed above the collection box, and an air suction nozzle installed at the end of the folding bracket is connected to the other end of the air inlet pipe; the dust removal component comprises a shell, a frame and a filter screen, the shell is installed on the outer wall of the collection box, the upper and lower ends of the shell are respectively connected to the air inlet pipe and the air suction pump, the frame is detachably installed in the shell, and the dust filter card is placed on the frame.

[0006] Preferably, a storage slot is provided on the top of the collection box, and the folding bracket is installed in the storage slot.

[0007] Preferably, one side of the shell is open, and a sealing cover is installed at the opening.

[0008] Preferably, positioning members for fixing the frame are installed on both sides of the inner wall of the cavity of the shell, and a first slide groove is opened on the inner wall of the cavity, and the positioning member includes a first slide rod and a second slide rod, the first slide rod is slidably installed in the first slide groove, one end of the first slide rod extends out of the first slide groove and is clamped in the bayonet on the frame, and the other end abuts against the inner wall of the first slide groove through the first spring; a second slide groove is opened in the shell perpendicular to the first slide groove, and the second slide rod is slidably installed in the second slide groove, a through hole is opened through the middle of the first slide rod, and one end of the second slide rod is provided with a second inclined surface matching the through hole, and the other end extending out of the second slide groove is provided in a groove opened on the opening side of the shell.

[0009] Preferably, a third spring is installed on the inner wall of the cavity away from the shell opening, and the third spring abuts against the frame.

[0010] Preferably, a pressure portion is provided at the end of the second slide bar extending out of the second slide groove, and a second spring is sleeved on the second slide bar, with both ends of the second spring respectively abutting against the pressure portion and the bottom of the groove.

[0011] Preferably, the end of the first sliding rod extending out of the first sliding groove is provided with a first inclined surface.

[0012] Preferably, multiple layers of dust filters are horizontally installed on the frame from top to bottom.

[0013] Preferably, the mesh size of the lower dust filter in the frame is smaller than that of the upper dust filter.

[0014] The beneficial effects of the utility model are:

[0015] 1. The collection box of the utility model collects the sample gas and sends the sample gas to the detector through the exhaust pipe for detection, making sample collection and detection more convenient.

[0016] 2. The folding bracket can support the suction nozzle at a certain height according to the detection needs, which is more convenient for collecting and sampling the detection gas. The folding bracket is installed in the storage slot. When not in working state, the folding bracket can be stored in the storage slot to reduce its space occupation, making it more convenient to transport and carry the collection box.

[0017] 3. After the dust filter on the frame is installed, it is inserted into the cavity through the opening of the housing, squeezing the third spring. The inner side of the frame will abut the first inclined surface on the first slide bar. Under the guidance of the first inclined surface, the first slide bar retracts into the first slide groove and squeezes the first spring until the first slide bar snaps into the snap-in notch on the frame, completing the snap-in fixation of the frame.

[0018] 4. When the dust filter needs to be replaced, open the sealing cover, press the second slide rod through the pressure part, the second spring is squeezed, and the second inclined surface at the end of the second slide rod will cooperate with the perforation on the first slide rod. Under the guidance of the second inclined surface, the first slide rod shrinks into the first slide groove and squeezes the first spring until the end of the first slide rod disengages from the bayonet. At this time, under the action of the third spring force, push the frame outward and replace the dust filter on the frame. The two slide rods automatically reset under the action of the corresponding spring force, making the disassembly of the frame more labor-saving and the replacement of the dust filter more convenient and quick.

[0019] 5. The dust filter card is placed in the compartment on the frame, and the aperture of each layer of dust filter gradually becomes smaller downwards, which can effectively filter dust and other impurities in the sample exhaust gas and improve the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a top view of the interior of the housing of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation of the dust filter on the frame of the utility model. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of use of the present invention.

[0024] like Figure 1-3 As shown, the present invention provides a waste gas detection device for a chemical batching room, comprising a detector 1 and a collection box 2. The detector 1 utilizes a conventional waste gas detection device. The collection box 2 is equipped with an exhaust pipe 21 connected to an internal air outlet cavity. A control valve 211 is mounted on the exhaust pipe 21, and the end of the exhaust pipe 21 is removably connected to the air inlet of the detector 1. The collection box 2 collects sample gas and then delivers the sample gas through the exhaust pipe 21 to the detector 1 for testing, making sample collection and testing more convenient.

[0025] An air pump 5 is installed at the air inlet on one side of the collection box 2. The air pump 5 is connected to one end of the air inlet pipe 22 via a dust removal assembly. Positioning the air pump 5 outside the collection box 2 facilitates inspection and maintenance. A storage slot 20 is provided at the top of the collection box 2, within which a foldable bracket 3 is mounted. An air nozzle 31, mounted at the end of the foldable bracket 3, is connected to the other end of the air inlet pipe 22. In this embodiment, the air inlet pipe 22 is made of a corrugated hose to accommodate the expansion and contraction of the foldable bracket 3. The foldable bracket 3 supports the air nozzle 31 at a certain height according to testing needs, further facilitating the collection and sampling of test gases. Furthermore, the foldable bracket 3 is mounted in the storage slot 20. When not in operation, it can be stored in the storage slot 20 to reduce its space usage and facilitate the transport of the collection box 2. The collection box 2 also includes a battery 23 to provide power to components such as the air pump 5.

[0026] The dust removal assembly comprises a housing 4, a frame 6, and a filter. The housing 4 is mounted on the outer wall of the collection box 2 and has an opening on one side. A sealing cover 41 is removably mounted on the opening. The upper and lower ends of the housing 4 are connected to the air inlet pipe 22 and the suction pump 5, respectively. The frame 6 is removably slidably mounted within the housing 4, and the dust filter 61 is snapped onto the frame 6. Positioning members for securing the frame 6 are mounted on either side of the inner wall of the cavity 40 of the housing 4. These members comprise a first slide bar 71 and a second slide bar 72. A first slot 42 is defined in the inner wall of the cavity 40. The first slide bar 71 slides within the first slot 42. One end of the first slide bar 71 extends out of the first slot 42 and is snapped into the notch 60 on the frame 6. The other end abuts against the inner wall of the first slot 42 via a first spring 81. The end of the first slide bar 71 extending out of the first slot 42 is provided with a first inclined surface 712. A third spring 83 is mounted on the inner wall of the cavity 40 away from the opening of the housing 4 and abuts against the frame 6. A second slot 43 is defined within the housing 4, perpendicular to the first slot 42. A second slide rod 72 is slidably mounted within the second slot 43. A through-hole 711 is defined through the middle of the first slide rod 71. One end of the second slide rod 72 is provided with a second inclined surface 721 that mates with the through-hole 711. The other end, extending from the second slot 43, is positioned within a groove 44 defined on the open side of the housing 4. A pressure portion 722 is defined at the end of the second slide rod 72 extending from the second slot 43. A second spring 82 is sleeved around the second slide rod 72, with its ends abutting against the pressure portion 722 and the bottom of the groove 44, respectively. The inner edges of the frame 6 may also be provided with beveled surfaces that mate with the first inclined surface 712, further facilitating the abutment and sliding movement of the first slide rod 71.

[0027] After the dust filter 61 on the frame 6 is installed, it is sent into the cavity 40 through the opening of the shell 4 and squeezes the third spring 83. The inner side of the frame 6 will abut against the first inclined surface 712 on the first slide rod 71. Under the guidance of the first inclined surface 712, the first slide rod 71 shrinks into the first slide groove 42 and squeezes the first spring 81 until the first slide rod 71 is snapped into the snap-in 60 on the frame 6, and the frame 6 can be snapped and fixed.

[0028] When the dust filter 61 needs to be replaced, the sealing cover 41 is opened, and the second slide bar 72 is pressed by the pressure portion 722. The second spring 82 is squeezed, and the second inclined surface 721 at the end of the second slide bar 72 will cooperate with the perforation 711 on the first slide bar 71. Under the guidance of the second inclined surface 721, the first slide bar 71 contracts into the first slide groove 42 and squeezes the first spring 81 until the end of the first slide bar 71 disengages from the bayonet 60. At this time, under the elastic force of the third spring 83, the frame 6 is pushed outward and the dust filter 61 on the frame 6 can be replaced. The two slide bars automatically reset under the elastic force of the corresponding springs, making the disassembly of the frame 6 more labor-saving and the replacement of the dust filter 61 more convenient and quick.

[0029] Multiple layers of dust filters 61 are mounted horizontally on the frame 6 from top to bottom, with the mesh size of the lower layer smaller than that of the upper layer. The dust filters 61 are placed in the interlayers of the frame 6, and the mesh size of each layer gradually decreases as it moves downward. This effectively filters impurities such as dust from the sample exhaust gas, improving detection accuracy.

[0030] When using the present invention, the suction nozzle 31 is extended to the designated area by folding the bracket 3, the control valve 211 is opened, and the suction pump 5 is activated to collect the sample exhaust gas. After collection is complete, the control valve 211 is closed to complete the sample collection. When testing exhaust gas, the exhaust pipe 21 is connected to the air inlet of the detector 1, the control valve 211 is opened, and the sample gas is sent to the detector 1 through the exhaust pipe 21 for testing, making sample collection and testing more convenient.

[0031] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.

Claims

1. A waste gas detection device for a chemical batching room, comprising a detector and a collection box, characterized in that: The collection box is provided with an exhaust pipe connected to the internal air outlet cavity, a control valve is installed on the exhaust pipe, and the end of the exhaust pipe is detachably connected to the air inlet of the detector; an air suction pump is installed at the air inlet on one side of the collection box, and the air suction pump is connected to one end of the air inlet pipe through a dust removal assembly; a folding bracket is installed above the collection box, and an air suction nozzle installed at the end of the folding bracket is connected to the other end of the air inlet pipe; the dust removal assembly includes a shell, a frame and a filter screen, the shell is installed on the outer wall of the collection box, the upper and lower ends of the shell are respectively connected to the air inlet pipe and the air suction pump, the frame is detachably installed in the shell, and the dust filter card is placed on the frame.

2. The exhaust gas detection device for a chemical batching room according to claim 1, characterized in that: A storage slot is provided on the top of the collection box, and the folding bracket is installed in the storage slot.

3. The exhaust gas detection device for a chemical batching room according to claim 1, characterized in that: One side of the shell is open, and a sealing cover is installed at the opening.

4. The exhaust gas detection device for a chemical batching room according to claim 3, characterized in that: Positioning members for fixing the frame are installed on both sides of the inner wall of the cavity of the shell, and the first slide groove is opened on the inner wall of the cavity, and the positioning member includes a first slide rod and a second slide rod, the first slide rod is slidably installed in the first slide groove, one end of the first slide rod extends out of the first slide groove and is clamped in the bayonet on the frame, and the other end abuts against the inner wall of the first slide groove through the first spring; a second slide groove is opened in the shell perpendicular to the first slide groove, and the second slide rod is slidably installed in the second slide groove, a through hole is opened through the middle of the first slide rod, and one end of the second slide rod is provided with a second inclined surface matching the through hole, and the other end extending out of the second slide groove is provided in a groove opened on the opening side of the shell.

5. The exhaust gas detection device for a chemical batching room according to claim 4, characterized in that: A third spring is installed on the inner wall of the cavity away from the shell opening, and the third spring abuts against the frame.

6. The exhaust gas detection device for a chemical batching room according to claim 4, characterized in that: The end of the second slide bar extending out of the second slide groove is provided with a pressure portion, and the second slide bar is sleeved with a second spring, with two ends of the second spring respectively abutting against the pressure portion and the bottom of the groove.

7. The exhaust gas detection device for a chemical batching room according to claim 4, characterized in that: The end of the first sliding rod extending out of the first sliding slot is provided with a first inclined surface.

8. The exhaust gas detection device for a chemical batching room according to claim 1, characterized in that: Multiple layers of dust filter screens are horizontally installed on the frame from top to bottom.

9. The exhaust gas detection device for a chemical batching room according to claim 8, characterized in that: The mesh size of the lower dust filter in the frame is smaller than that of the upper dust filter.

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