CN216792174U

CN216792174U - Toxic and harmful gas detection device of VOCs

Info

Publication number: CN216792174U
Application number: CN202221173775.5U
Authority: CN
Inventors: 许晓娟; 陈欢; 张薇
Original assignee: Shandong Huazhiyuan Testing Co ltd
Current assignee: Shandong Huazhiyuan Testing Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-06-21
Anticipated expiration: 2032-05-17

Abstract

The utility model discloses a VOCs toxic and harmful gas detection device, which relates to the technical field of VOCs toxic and harmful gas detection and comprises a detection box, a gas alarm controller arranged in the upper part of the detection box and a box door hinged at the lower part of the front end face of the detection box, wherein a gas collection box is arranged in an opening of a fixed frame plate, gas detectors are arranged on two sides of the top surface of a sealing box cover in a penetrating manner, a connecting pipe is connected with the inner part of a fixed sleeve in a threaded manner, and a butt joint component is arranged in the middle of the bottom surface of the gas collection box; a filtering component is arranged in the upper part of the gas collecting box; the gas collection box is simple in structure, the box body used for detecting gas is convenient to disassemble and clean through the matching of the gas collection box, the butt joint component and the filtering component, meanwhile, the sealing performance of harmful gas during detection is improved, meanwhile, the gas to be detected can be effectively filtered before being contacted with the gas detector, particles in the gas are effectively prevented from plugging a detection port at the bottom of the gas detector, and the accuracy of detecting harmful components in the gas is improved.

Description

Toxic and harmful gas detection device of VOCs

Technical Field

The utility model relates to the technical field of detection of toxic and harmful gases of VOCs, in particular to a detection device for toxic and harmful gases of VOCs.

Background

Volatile Organic Compounds (VOCs) are important precursors for forming secondary pollutants such as fine particulate matters (PM 2.5) and ozone, and further cause atmospheric environmental problems such as dust haze and photochemical smog. With the rapid development of industrialization and urbanization in China and the continuous increase of energy consumption, the detection operation of harmful components on the VOCs needs to be carried out through a toxic and harmful gas detection device due to the fact that VOCs are complex in emission source, various in emission form and various in material variety.

However, when the conventional harmful gas detection device detects toxic and harmful gases in the VOCs, the gas to be detected is inconvenient to be effectively filtered before contacting with a gas detector, so that particles in the gas are easy to block a detection port at the bottom of the gas detector, and the accuracy of detecting the harmful components in the VOCs is influenced; therefore, optimization of the above problem is required.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a VOCs toxic and harmful gas detection device.

In order to achieve the purpose, the utility model adopts the following technical scheme: a VOCs toxic and harmful gas detection device comprises a detection box, a gas alarm controller arranged in the upper part of the detection box and a box door hinged in an opening at the lower part of the front end face of the detection box, wherein fixing pieces are arranged on the rear sides of the upper end and the lower end of the two side faces of the detection box; a fixed frame plate is horizontally arranged in the lower part of the detection box, a gas collecting box is arranged in an opening of the fixed frame plate, a sealing box cover is horizontally arranged in an opening at the top of the gas collecting box, gas detectors penetrate through two sides of the top surface of the sealing box cover, and the signal output ends of the gas detectors are electrically connected with the signal receiving end of the gas alarm controller;

a fixed sleeve penetrates through the middle of the bottom surface of the detection box, a connecting pipe is connected with the inner part of the fixed sleeve in a threaded manner, an external thread is arranged on the outer wall of the connecting pipe, and a butt joint assembly for sealing and splicing the connecting pipe is arranged in the middle of the bottom surface of the gas collection box; and a filtering component for filtering particles in the gas is arranged in the upper part of the gas collecting box.

Preferably, the docking assembly includes an insertion shell fixedly penetrating into the lower portion of the gas collecting box, a sealing ring cover fixedly sleeved on the tube body at the lower portion of the connecting tube, and a sealing sleeve arranged on the inner wall of the insertion shell, the top of the insertion shell is sealed, through holes are formed in the periphery of the outer wall at the top of the connecting tube, air inlets coinciding with the through holes are formed in the periphery of the upper portion of the outer wall of the insertion shell, and the outer wall at the lower portion of the fixing sleeve is hermetically inserted into the sealing ring cover.

Preferably, the vertical sealed crown plate that is equipped with in middle part of bottom surface in the sealed crown cover, the sealed annular has been seted up to the bottom end face cooperation sealed crown plate of fixed cover, sealed crown plate seals and pegs graft inside sealed annular, just sealed crown plate is the rubber material.

Preferably, the filtering assembly comprises a sealing groove formed in the upper part of the inner wall of the gas collecting box, a filtering screen plate horizontally and movably arranged in the upper part of the gas collecting box, and a sealing rubber frame fixedly sleeved on the outer ring of the filtering screen plate, wherein the outer wall of the sealing rubber frame is movably and hermetically abutted against the inner wall of the sealing groove; four corners of the bottom surface of the sealing box cover are vertically provided with spring telescopic rods, telescopic ends of the spring telescopic rods movably penetrate through the filter screen plate, external threads are formed in the outer wall of the lower portion of the telescopic end of each spring telescopic rod, and the bottom of the telescopic end of each spring telescopic rod is connected with a fixing nut in a threaded mode;

preferably, the telescopic end of the spring telescopic rod at the top of the filter screen plate is fixedly sleeved with an abutting annular plate; and the upper part of the rear end face of the gas collecting box is longitudinally provided with an exhaust valve pipe which movably penetrates out of the detection box.

Compared with the prior art, the utility model has the beneficial effects that: according to the gas collection box, the gas collection box is matched with the butt joint component and the filtering component, the box body used for detecting gas can be conveniently detached and cleaned, meanwhile, the sealing performance of harmful gas during detection is improved, meanwhile, the gas to be detected can be effectively filtered before being in contact with the gas detector, particles in the gas are effectively prevented from blocking a detection port at the bottom of the gas detector, and the accuracy of detection of harmful components in the gas is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

fig. 1 is a schematic view of a front view structure according to the present invention;

FIG. 2 is a front view partially in structural section according to the present invention;

fig. 3 is a sectional view of a sealing ring cover and a sealing ring plate structure according to the present invention.

Number in the figure: 1. a detection box; 2. a box door; 3. a fixing sheet; 4. fixing the frame plate; 5. a gas collection box; 6. sealing the box cover; 7. a gas detector; 8. fixing a sleeve; 9. a plug-in housing; 10. a connecting pipe; 11. a sealing ring cover; 12. a seal ring plate; 13. a sealing sleeve; 14. a filter screen plate; 15. sealing the rubber frame; 16. the spring is a telescopic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example (b): referring to fig. 1-3, the toxic and harmful gas detection device for VOCs in the utility model comprises a detection box 1, a gas alarm controller installed in the upper part of the detection box 1, and a box door 2 hinged in an opening at the lower part of the front end face of the detection box 1, wherein fixing pieces 3 are arranged on the rear sides of the upper and lower ends of the two side faces of the detection box 1; a fixed frame plate 4 is horizontally arranged in the lower part of the detection box 1, a gas collecting box 5 is arranged in an opening of the fixed frame plate 4, and an exhaust valve pipe which movably penetrates out of the detection box 1 is longitudinally arranged on the upper part of the rear end face of the gas collecting box 5, so that after gas is detected, the exhaust valve pipe can be opened to discharge the gas in the gas collecting box 5; a sealing box cover 6 is horizontally arranged in an opening at the top of the gas collecting box 5, gas detectors 7 are arranged on two sides of the top surface of the sealing box cover 6 in a penetrating manner, and the signal output ends of the gas detectors 7 are electrically connected with the signal receiving end of the gas alarm controller; a fixed sleeve 8 penetrates through the middle of the bottom surface of the detection box 1, a connecting pipe 10 is connected to the inner part of the fixed sleeve 8 in a threaded manner, external threads are arranged on the outer wall of the connecting pipe 10, and a butt joint assembly for sealing and splicing the connecting pipe 10 is arranged in the middle of the bottom surface of the gas collection box 5; a filtering component for filtering particles in the gas is arranged in the upper part of the gas collecting box 5; through the cooperation of gas collection box 5 and butt joint subassembly and filtering component, be convenient for dismantle the clearance to the used box body of measuring gas, improve simultaneously to harmful gas the leakproofness when examining, can treat the gas that detects simultaneously and carry out effectual filtration before 7 contacts with gas detector, effectively avoid the granule in the gas to cause the shutoff to the detection mouth of 7 bottoms of gas detector, improve the accuracy that detects to the inside harmful component of gas.

In the utility model, the butt joint component comprises an insertion shell 9 fixedly penetrating into the lower part of the gas collecting box 5, a sealing ring cover 11 fixedly sleeved on a pipe body at the lower part of the connecting pipe 10 and a sealing sleeve 13 arranged on the inner wall of the insertion shell 9, the top of the insertion shell 9 is sealed, through holes are formed in the periphery of the outer wall at the top of the connecting pipe 10, gas inlets coinciding with the through holes are formed in the periphery of the upper part of the outer wall of the insertion shell 9, and the outer wall at the lower part of the fixing sleeve 8 is hermetically inserted into the sealing ring cover 11, so that gas to be detected can be supplied to the inside of the gas collecting box 5 conveniently.

In the utility model, the middle part of the inner bottom surface of the sealing ring cover 11 is vertically provided with the sealing ring plate 12, the bottom end surface of the fixed sleeve 8 is matched with the sealing ring plate 12 to be provided with the sealing ring groove, the sealing ring plate 12 is inserted in the sealing ring groove in a sealing way, and the sealing ring plate 12 is made of rubber materials, so that the sealing property between the connecting pipe 10 and the fixed sleeve 8 is improved conveniently.

In the utility model, the filtering component comprises a sealing groove arranged on the upper part of the inner wall of the gas collecting box 5, a filtering screen plate 14 horizontally and movably arranged in the upper part of the gas collecting box 5 and a sealing rubber frame 15 fixedly sleeved on the outer ring of the filtering screen plate 14, wherein the outer wall of the sealing rubber frame 15 is movably and hermetically abutted against the inner wall of the sealing groove; four corners of the bottom surface of the sealing box cover 6 are vertically provided with spring telescopic rods 16, so that impurities and particles in the gas can be conveniently filtered through the filter screen plate 14, and the particles in the gas can be effectively prevented from plugging a detection port at the bottom of the gas detector 7; the telescopic ends of the spring telescopic rods 16 movably penetrate through the filter screen plate 14, external threads are formed in the outer wall of the lower portion of the telescopic ends of the spring telescopic rods 16, and fixing nuts are connected to the bottom threads of the telescopic ends of the spring telescopic rods 16; the flexible end of the spring telescopic rod 16 at the top of the filter screen plate 14 is fixedly sleeved with an abutting ring plate; the filter screen plate 14 is convenient to disassemble and clean.

The working principle is as follows: when the gas collecting box is used, firstly, the box door 2 is opened, the gas collecting box 5 with the sealing box cover 6 and the gas detector 7 is installed on the fixed frame plate 4, then the top end of the connecting pipe 10 is hermetically inserted in the inserting shell 9, then the through hole is coincided with the gas inlet, and then, when the connecting pipe 10 is installed, the sealing ring plate 12 on the sealing ring cover 11 is conveniently hermetically inserted in the sealing ring groove of the fixed sleeve 8, so that the sealing property between the connecting pipe 10 and the fixed sleeve 8 is improved; then fixedly communicating an exhaust valve pipe at the rear end of the gas collecting box 5 with external collecting equipment; then the gas alarm controller is electrically connected with an external power supply through a lead, then the gas alarm controller is electrically connected with the gas detector 7, then an external pipeline for supplying gas to be detected is connected with the connecting pipe 10, then the external pipeline supplies gas to the inside of the connecting pipe 10, then the gas to be detected enters the gas inlet through a through hole on the connecting pipe 10, then the gas to be detected enters the inside of the gas collecting box 5 through the gas inlet, then when the gas entering the inside of the gas collecting box 5 rises, impurities and particles in the gas are conveniently filtered through the filter screen plate 14, the situation that the particles in the gas block a detection port at the bottom of the gas detector 7 is effectively avoided, then the filtered gas is detected through the gas detector 7, and then the measured value of the harmful components is transmitted to the gas alarm controller, and then the gas alarm controller displays the harmful components in the gas through a front end face display screen, after the gas detection is finished, the gas in the gas collecting box 5 can be discharged by opening the exhaust valve pipe.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a poisonous and harmful gas detection device of VOCs, includes detection case (1), installs the gas alarm control ware in detection case (1) upper portion and articulates terminal surface lower part intraoral chamber door (2) before detection case (1), its characterized in that: the rear sides of the upper end and the lower end of the two side surfaces of the detection box (1) are respectively provided with a fixing sheet (3); a fixed frame plate (4) is horizontally arranged in the lower part of the detection box (1), a gas collecting box (5) is erected in an opening of the fixed frame plate (4), a sealing box cover (6) is horizontally arranged in an opening at the top of the gas collecting box (5), gas detectors (7) penetrate through two sides of the top surface of the sealing box cover (6), and signal output ends of the gas detectors (7) are electrically connected with a signal receiving end of a gas alarm controller;

a fixed sleeve (8) penetrates through the middle of the bottom surface of the detection box (1), a connecting pipe (10) is connected to the inner part of the fixed sleeve (8) in a threaded manner, an external thread is arranged on the outer wall of the connecting pipe (10), and a butt joint assembly for sealing and splicing the connecting pipe (10) is arranged in the middle of the bottom surface of the gas collection box (5); and a filtering component for filtering particles in the gas is arranged in the upper part of the gas collecting box (5).

2. The apparatus according to claim 1, wherein the apparatus for detecting toxic and harmful gases in VOCs comprises: the butt joint component comprises an inserting shell (9) fixedly penetrating into the lower part of the gas collecting box (5), a sealing ring cover (11) fixedly sleeved on a pipe body on the lower part of the connecting pipe (10) and a sealing sleeve (13) arranged on the inner wall of the inserting shell (9), the top of the inserting shell (9) is sealed and arranged, through holes are formed in the periphery of the outer wall of the top of the connecting pipe (10), air inlets coinciding with the through holes are formed in the periphery of the upper part of the outer wall of the inserting shell (9), and the outer wall of the lower part of the fixing sleeve (8) is hermetically inserted into the sealing ring cover (11).

3. The apparatus according to claim 2, wherein the apparatus for detecting toxic and harmful gases in VOCs comprises: the vertical sealed crown plate (12) that is equipped with in middle part of bottom surface in sealed crown cap (11), sealed annular has been seted up in bottom face cooperation sealed crown plate (12) of fixed cover (8), sealed crown plate (12) are sealed to be pegged graft inside sealed annular, just sealed crown plate (12) are the rubber material.

4. The apparatus according to claim 1, wherein the apparatus for detecting toxic and harmful gases in VOCs comprises: the filtering component comprises a sealing groove formed in the upper part of the inner wall of the gas collecting box (5), a filtering screen plate (14) horizontally and movably arranged in the upper part of the gas collecting box (5) and a sealing rubber frame (15) fixedly sleeved on the outer ring of the filtering screen plate (14), and the outer wall of the sealing rubber frame (15) is movably abutted with the inner wall of the sealing groove in a dynamic sealing manner; the utility model discloses a filter screen plate, including sealed lid (6), the equal vertical spring telescopic link (16) that is equipped with in bottom surface four corners of sealed lid (6), the equal activity of the flexible end of spring telescopic link (16) runs through filter screen plate (14), just the external screw thread has been seted up on the outer wall of the flexible end lower part of spring telescopic link (16), the bottom threaded connection of the flexible end of spring telescopic link (16) has fixation nut.

5. The apparatus according to claim 4, wherein the apparatus for detecting toxic and harmful gases in VOCs comprises: the telescopic end of the spring telescopic rod (16) at the top of the filter screen plate (14) is fixedly sleeved with an abutting annular plate; the upper part of the rear end face of the gas collecting box (5) is longitudinally provided with an exhaust valve pipe which movably penetrates through the detection box (1).