CN114354845A - VOCS waste gas collecting and detecting device and using method thereof - Google Patents
VOCS waste gas collecting and detecting device and using method thereof Download PDFInfo
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- CN114354845A CN114354845A CN202111505137.9A CN202111505137A CN114354845A CN 114354845 A CN114354845 A CN 114354845A CN 202111505137 A CN202111505137 A CN 202111505137A CN 114354845 A CN114354845 A CN 114354845A
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- 239000002912 waste gas Substances 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 55
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 12
- 230000009286 beneficial effect Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 84
- 239000006185 dispersion Substances 0.000 claims description 52
- 230000007246 mechanism Effects 0.000 claims description 50
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000005201 scrubbing Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000010815 organic waste Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0047—Organic compounds
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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Abstract
The utility model discloses a VOCS waste gas collecting and detecting device, and belongs to the technical field of waste gas treatment. A VOCS waste gas collecting and detecting device comprises a movable base and a washing tower, wherein the washing tower is arranged at the top of the movable base and is provided with a waste gas inlet for washing VOCs waste gas; the drying filter cylinder is arranged at the air outlet of the washing tower; the adsorption tower is arranged at the top of the movable base and is used for adsorbing the VOCs waste gas; the detection unit is connected between the air outlet end of the drying filter cylinder and the air inlet end of the adsorption tower and is used for detecting VOCs waste gas; the negative pressure discharge unit is arranged at the air outlet end of the adsorption tower; the utility model realizes the applicability aiming at the generation points of scattered or concentrated waste gas and is beneficial to improving the absorption efficiency of the activated carbon adsorption plate.
Description
Technical Field
The utility model relates to the technical field of organic waste gas treatment, in particular to a VOCS waste gas collection and detection device and a using method thereof.
Background
VOCs are volatile organic compounds with boiling points of 50-260 ℃ and saturated vapor pressure of over 133.3Pa at room temperature, and have great harm to human health and ecological environment. The existing VOCs treatment technology comprises two major types of destruction and recycling, wherein the recycling technology is widely applied due to simple process, good economy and relative maturity, and the principle of the technology is that activated carbon is adopted to fully adsorb VOCs, after adsorption saturation, the VOCs adsorbed on the activated carbon are desorbed, and then condensation liquefaction is carried out to realize recycling.
In the prior art, a utility model with the patent application number of CN202020241983.9 discloses a VOCs waste gas treatment collecting box for paint spraying, which belongs to the technical field of waste gas treatment, and comprises a box body, wherein an air pump is installed above the box body, an air inlet pipe is arranged below the air pump, a first air cylinder is installed at one side of the air pump, a first telescopic rod is arranged below the first air cylinder, a second motor is installed below the first telescopic rod, a connecting rod is arranged below the second motor, a movable plate is installed at the outer side of the connecting rod, the connecting rod is connected with the movable plate through a fourth bearing, and a plurality of placing grooves are arranged near the outer side of the connecting rod; according to the utility model, the third bearing, the first fan blade, the moving plate, the fourth bearing, the second motor, the first telescopic rod, the first cylinder, the placing groove, the second cylinder, the second telescopic rod and the sealing ring are arranged, so that the device can adjust the size of the space below the moving plate as required, thereby improving the adjusting capability of the collecting box, but the defects still exist, the dispersibility of VOCs waste gas generated by paint spraying is strong, and the absorption performance of the air inlet pipe is poor, so that the waste gas collecting performance is poor.
In the prior art, a utility model with the patent application number of CN201920549950.8 discloses a collecting and distributing type VOCs organic waste gas treatment and collection device, which comprises a collection box, wherein an adsorption bin is welded on the inner wall of the collection box, a placing frame is welded inside the adsorption bin, a guide groove is formed in the surface of the placing frame, an active carbon adsorption plate is slidably connected inside the guide groove, an access port is formed in the surface of the collection box, the access port and the adsorption bin are correspondingly distributed, a sealing plate is inserted inside the access port, a handle is welded on the surface of the sealing plate, an adjusting screw is screwed on the surface of the collection box, a baffle is welded on the rod body of the adjusting screw, and a separation plate is welded on the inner wall of the collection box; the beneficial effects are that: according to the collecting and distributing type VOCs organic waste gas treatment and collection device, the activated carbon adsorption plate is arranged to be of a detachable structure, so that the adsorption efficiency is increased, the replacement and the filling are convenient, the defects still exist, the absorption uniformity of the front surface and the back surface of the activated carbon adsorption plate is poor, and the utilization efficiency of the activated carbon adsorption plate is not guaranteed.
Disclosure of Invention
The utility model aims to solve the problems that in the prior art, when the dispersity of VOCs waste gas is strong, the absorption performance of an air inlet pipe is poor, the waste gas collection performance is poor, the absorption uniformity of the front surface and the back surface of an activated carbon adsorption plate is poor, and the utilization efficiency of the activated carbon adsorption plate is not guaranteed.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a VOCS waste gas collecting and detecting device comprises a movable base and a movable base,
the washing tower is arranged at the top of the movable base and is provided with a waste gas inlet for washing VOCs waste gas;
the drying filter cylinder is arranged at the air outlet of the washing tower;
the adsorption tower is arranged at the top of the movable base and is used for adsorbing the VOCs waste gas;
the detection unit is connected between the air outlet end of the drying filter cylinder and the air inlet end of the adsorption tower and is used for detecting VOCs waste gas;
the negative pressure discharge unit is arranged at the air outlet end of the adsorption tower;
wherein the content of the first and second substances,
the inlet end of scrubbing tower is connected with main waste gas and advances the pipe, the one end that the scrubbing tower was kept away from to main waste gas advances the pipe is connected with the first dispersion mechanism of vertical direction, the dispersion punishment department of first dispersion mechanism is connected with advances the pipe with the inferior waste gas of pipe intercommunication, the dispersion punishment department of first dispersion mechanism still is connected with the second dispersion mechanism that the level set up, the dispersion punishment department of second dispersion mechanism is equipped with evenly distributed's waste gas collection branch pipe.
Preferably, the detection unit comprises a main gas pipe connected between the gas outlet end of the drying filter cartridge and the gas inlet end of the adsorption tower, a secondary gas guide pipe arranged at a branch opening of the main gas pipe, a gas storage tank connected to one end of the secondary gas guide pipe far away from the main gas pipe, a return pipe connected to the gas outlet end of the gas storage tank and communicated with the main gas pipe, and a gas detector arranged at the top of the gas storage tank and provided with a detection probe in an inner cavity of the gas storage tank.
Preferably, the adsorption tower comprises a tank body, a hollow shaft arranged at the central axis of the tank body, a transmission rod which is connected with the outer wall of the hollow shaft through a bracket in a rotating manner and extends towards the inner cavity of the hollow shaft, a reciprocating mechanism which is connected with one end of the transmission rod arranged in the hollow shaft and is arranged in the inner cavity of the hollow shaft, an installation frame arranged at one end of the transmission rod arranged outside the hollow shaft, a fixing groove arranged at one side of the installation frame far away from the transmission rod, and an activated carbon adsorption plate embedded in the fixing groove.
Preferably, the reciprocating mechanism comprises an automatic telescopic cylinder arranged at the top end of the hollow shaft, telescopic rods symmetrically arranged at the output end of the automatic telescopic cylinder and arranged in the inner cavity of the hollow shaft, a threaded seat arranged at the telescopic end of the telescopic rod, a rotating shaft rotatably connected to the central axis of the hollow shaft, a threaded part arranged at the top end of the rotating shaft and in threaded fit with the threaded seat, a transmission bevel gear sleeved on the outer wall of the rotating shaft, and a driven bevel gear arranged at one end of the transmission rod arranged in the inner cavity of the hollow shaft and meshed with the transmission bevel gear.
Preferably, the negative pressure discharge unit comprises a negative pressure pump installed at the top of the tank body, and the negative pressure end of the negative pressure pump is connected with the air outlet of the tank body.
Preferably, first dispersion mechanism advances the mount pad of pipe handing-over department including installing main waste gas, slide and set up first screw seat and the second screw seat at the mount pad installation department, install at the mount pad installation department with first screw seat and second screw seat screw-thread fit's drive lead screw and install the scissors connecting rod group of vertical setting on first screw seat and second screw seat, the air inlet evenly distributed that the pipe was advanced to inferior waste gas is in the hinge point department of scissors connecting rod group.
Preferably, the waste gas collecting branch pipe comprises straight pipe collecting sections and hose mounting sections which are distributed in a staggered mode, collecting ports which are distributed uniformly are formed in the straight pipe collecting sections, and the straight pipe collecting sections are arranged in a V-shaped mode.
Preferably, the second dispersion mechanism comprises a horizontally arranged slide rod arranged at a hinge point in the middle of the scissor type connecting rod group, evenly distributed slide blocks connected to the slide rod in a sliding manner, mounting grooves formed in the slide blocks and matched with the hose mounting sections, springs connected between the adjacent slide blocks and sleeved on the outer walls of the slide rods, driving winding and unwinding wheels arranged on the outer walls of the slide blocks positioned in the middle, and connecting ropes arranged between the driving winding and unwinding wheels and the slide blocks at the end parts.
Preferably, the top of the movable base is further connected with a universal adjusting arm, and an adjusting section of the universal adjusting arm is fixedly connected with the mounting seat.
A method for using a VOCS waste gas collecting and detecting device comprises the following steps:
s1: when the device is used, the device is moved to a waste gas generating point through the movable base, the angle of the collecting point is adjusted through the universal adjusting arm, the applicability of multi-angle collection is further realized, and meanwhile, the negative pressure pump is started, and the waste gas absorption function of the main waste gas inlet pipe is realized;
s2: adjusting a first dispersion mechanism and a second dispersion mechanism according to the dispersion range of waste gas at a waste gas generation point, when the dispersion range of the waste gas generation point is small, adjusting a driving screw rod to drive a first screw seat and a second screw seat to be away from each other, closing a shear type connecting rod group at the moment and enabling slide rods on the adjacent second dispersion mechanisms to be close to each other, realizing the gathering function in the vertical direction, simultaneously opening a driving winding and unwinding roller for winding, gradually winding a connecting rope on the driving winding and unwinding roller, enabling slide blocks to be close to each other, gradually closing a spring, further realizing the gathering function in the horizontal direction, reducing an included angle between adjacent straight pipe collecting sections on a waste gas collecting branch pipe at the moment, enabling the distribution of collecting ports to be dense, further realizing the stable collecting function of waste gas in a small range, when the dispersion range of the waste gas generation point is large, adjusting the driving screw rod to drive the first screw seat and the second screw seat to be close to each other, at the moment, the scissor type connecting rod group extends to drive the sliding rods on the adjacent second dispersing mechanisms to be away from each other, so that the dispersing function in the vertical direction is realized, meanwhile, the driving winding and unwinding wheel is started to unwind, the sliding blocks are away from each other along with the gradual extension of the connecting rope under the action of the resilience force of the spring, so that the gathering function in the horizontal direction is realized, the included angle between the adjacent straight pipe collecting sections on the waste gas collecting branch pipe is increased, the distribution of collecting ports becomes dispersed, and the stable collecting function of large-range waste gas is realized;
s3: the collected waste gas enters the main waste gas inlet pipe through the secondary waste gas inlet pipe and then enters the washing tower for washing, so that the absorption function is realized, and meanwhile, the temperature can be well reduced;
s4: the cooled waste gas enters the gas storage box through the main gas guide pipe and along the secondary gas guide pipe, the waste gas entering the gas storage box is detected through the gas detector, the analysis of the components of the waste gas is facilitated, and then the waste gas enters the main gas guide pipe through the return pipe and flows towards the inner cavity of the adsorption tower;
s5: open the reciprocal flexible of automatic telescopic cylinder realization telescopic link, at the reciprocal flexible in-process of telescopic link, drive the screw thread seat along the reciprocal lift of screw thread portion of axis of rotation, and make the axis of rotation realize reciprocating rotation's function, and then drive transmission bevel gear reciprocating rotation, then realize the reciprocating rotation of transfer line through the driven bevel gear rather than the meshing, and then drive the reciprocal swing of the active carbon adsorption board of installation on the installing frame, realize the homogeneous utilization of active carbon adsorption board positive and negative, help improving the detention time of waste gas at the internal of jar simultaneously, improve the adsorption effect.
Compared with the prior art, the utility model provides a VOCS waste gas collecting and detecting device, which has the following beneficial effects:
1. the VOCS waste gas collecting and detecting device has the applicability of multi-angle collection of painless positions through the movable base and the universal adjusting arm.
2. This detection device is collected to VOCS waste gas through first dispersion mechanism and second dispersion mechanism, realizes the suitability to the dispersion or concentrate waste gas production point, has solved among the prior art VOCs waste gas dispersibility stronger, and the absorption performance of intake pipe is bad, leads to the problem that waste gas collection performance is bad.
3. This detection device is collected to VOCS waste gas has realized the preliminary treatment and the cooling function of waste gas through the scrubbing tower.
4. This detection device is collected to VOCS waste gas has realized the composition detection function of waste gas through drying cylinder and detecting element.
5. This detection device is collected to VOCS waste gas through setting up at the internal reciprocating swing's of jar active carbon adsorption board, realizes the homogeneous utilization of active carbon adsorption board positive and negative, helps improving the detention time of waste gas at the internal of jar simultaneously, improves adsorption effect, has solved among the prior art active carbon adsorption board and has openly poor with the absorption degree of consistency at the back, is unfavorable for guaranteeing the problem of active carbon adsorption board's utilization efficiency.
Drawings
FIG. 1 is a schematic view of the present invention.
FIG. 2 is a second schematic structural diagram of the present invention.
Fig. 3 is a third schematic structural diagram of the present invention.
FIG. 4 is a fourth schematic view of the present invention.
Fig. 5 is a schematic structural diagram of a first dispersion mechanism and a second dispersion mechanism according to the present invention.
Fig. 6 is a second schematic structural diagram of the first dispersing mechanism and the second dispersing mechanism of the present invention.
Fig. 7 is an enlarged structural view of a portion a of fig. 6 according to the present invention.
Fig. 8 is a third schematic structural diagram of the first dispersion mechanism and the second dispersion mechanism of the present invention.
Fig. 9 is an enlarged structural view of a portion B of fig. 8 according to the present invention.
Fig. 10 is a schematic view of the internal structure of the can body of the present invention.
Fig. 11 is an enlarged structural view of a portion C of fig. 10 according to the present invention.
In the figure: 10. a movable base; 20. a washing tower; 210. a main exhaust gas inlet pipe; 220. a first dispersion mechanism; 221. a mounting seat; 222. a first nut block; 223. a second nut seat; 224. driving the screw rod; 225. a scissor linkage; 230. a secondary exhaust gas inlet pipe; 240. a second dispersion mechanism; 241. a slide bar; 242. a slider; 243. a spring; 244. driving the winding and unwinding wheel; 245. connecting ropes; 250. an exhaust gas collection branch pipe; 251. a straight pipe collection section; 252. a hose mounting section; 260. a universal adjusting arm; 30. drying the filter cartridge; 40. an adsorption tower; 410. a tank body; 420. a hollow shaft; 430. a support; 440. a transmission rod; 450. a reciprocating mechanism; 451. an automatic telescopic cylinder; 452. a telescopic rod; 453. a threaded seat; 454. a rotating shaft; 455. a threaded portion; 456. a drive bevel gear; 457. a driven bevel gear; 460. installing a frame; 470. an activated carbon adsorption plate; 50. a detection unit; 510. leading the air pipe; 520. a secondary airway; 530. a gas storage tank; 540. a return pipe; 550. a gas detector; 60. a negative pressure pump.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example 1:
referring to fig. 1-6, a VOCS exhaust collection and detection device includes a movable base 10, further including,
the washing tower 20 is installed at the top of the movable base 10, and is provided with an exhaust gas inlet for washing VOCs exhaust gas;
a dry cartridge filter 30 installed at an air outlet of the washing tower 20;
an adsorption tower 40 installed on the top of the movable susceptor 10 for adsorbing the VOCs off-gas;
a detection unit 50 connected between the outlet end of the drying filter cartridge 30 and the inlet end of the adsorption tower 40 for detecting the VOCs exhaust gas;
a negative pressure discharge unit installed at an air outlet end of the adsorption tower 40;
wherein the content of the first and second substances,
the air inlet end of the scrubber 20 is connected with a main waste gas inlet pipe 210, one end of the main waste gas inlet pipe 210 far away from the scrubber 20 is connected with a first dispersing mechanism 220 in the vertical direction, the dispersing point of the first dispersing mechanism 220 is connected with a secondary waste gas inlet pipe 230 communicated with the main waste gas inlet pipe 210, the dispersing point of the first dispersing mechanism 220 is further connected with a second dispersing mechanism 240 arranged horizontally, and the dispersing point of the second dispersing mechanism 240 is provided with waste gas collecting branch pipes 250 distributed uniformly.
Referring to fig. 1 to 4, the detecting unit 50 includes a main gas pipe 510 connected between the gas outlet end of the drying and filtering cartridge 30 and the gas inlet end of the adsorption tower 40, a secondary gas pipe 520 installed at a branch opening of the main gas pipe 510, a gas storage tank 530 connected to one end of the secondary gas pipe 520 far from the main gas pipe 510, a return pipe 540 connected to the gas outlet end of the gas storage tank 530 and communicated with the main gas pipe 510, and a gas detector 550 installed at the top of the gas storage tank 530 and having a detecting probe disposed in the inner cavity of the gas storage tank 530, wherein the detecting unit 50 realizes a component detecting function of the exhaust gas.
Referring to fig. 10 to 11, the adsorption tower 40 includes a tank 410, a hollow shaft 420 installed at a central axis of the tank 410, a driving rod 440 rotatably connected to an outer wall of the hollow shaft 420 through a bracket 430 and extending toward an inner cavity of the hollow shaft 420, a reciprocating mechanism 450 connected to an end of the driving rod 440 disposed in the hollow shaft 420 and installed in the inner cavity of the hollow shaft 420, an installation frame 460 installed at an end of the driving rod 440 disposed outside the hollow shaft 420, a fixing groove formed at a side of the installation frame 460 far from the driving rod 440, and an activated carbon adsorption plate 470 embedded in the fixing groove.
Referring to fig. 10-11, the reciprocating mechanism 450 includes an automatic telescopic cylinder 451 mounted at the top end of the hollow shaft 420, a telescopic rod 452 symmetrically mounted at the output end of the automatic telescopic cylinder 451 and disposed in the inner cavity of the hollow shaft 420, a threaded seat 453 mounted at the telescopic end of the telescopic rod 452, a rotating shaft 454 rotatably connected to the central axis of the hollow shaft 420, a threaded portion 455 disposed at the top end of the rotating shaft 454 and threadedly engaged with the threaded seat 453, a transmission bevel gear 456 sleeved on the outer wall of the rotating shaft 454, and a driven bevel gear 457 mounted at one end of the transmission rod 440 disposed in the inner cavity of the hollow shaft 420 and engaged with the transmission bevel gear 456, the automatic telescopic cylinder 451 is turned on to realize the reciprocating extension and retraction of the telescopic rod 452, during the reciprocating extension and retraction of the telescopic rod 452, the threaded seat 453 is driven to reciprocate along the threaded portion 455 of the rotating shaft 454 to realize the reciprocating rotation function, and further drive the transmission bevel gear 456 to rotate reciprocally, then, the reciprocating rotation of the transmission rod 440 is realized through the driven bevel gear 457 meshed with the transmission rod, and then the activated carbon adsorption plate 470 installed on the installation frame 460 is driven to swing in a reciprocating manner, so that the front and back sides of the activated carbon adsorption plate 470 are uniformly utilized, the residence time of waste gas in the tank body 410 is prolonged, and the adsorption effect is improved.
The negative pressure discharge unit comprises a negative pressure pump 60 installed at the top of the canister 410, and the negative pressure end of the negative pressure pump 60 is connected with the air outlet of the canister 410.
When the device is used, the device is moved to a waste gas generating point through the movable base 10, the angle of the collecting point is adjusted through the universal adjusting arm 260, the applicability of multi-angle collection is further realized, and meanwhile, the negative pressure pump 60 is started, and the waste gas absorption function of the main waste gas inlet pipe 210 is realized; the collected waste gas enters the main waste gas inlet pipe 210 through the secondary waste gas inlet pipe 230 and then enters the washing tower 20 for washing, so that the absorption function is realized, and meanwhile, the temperature can be well reduced; the cooled waste gas passes through the main gas pipe 510 and enters the gas storage tank 530 along the secondary gas pipe 520, the waste gas entering the gas storage tank 530 is detected by the gas detector 550, which is helpful for analyzing the components of the waste gas, and then the waste gas enters the main gas pipe 510 through the return pipe 540 and flows towards the inner cavity of the adsorption tower 40; open automatic telescopic cylinder 451 and realize the reciprocal flexible of telescopic link 452, at the reciprocal flexible in-process of telescopic link 452, drive screw thread seat 453 along the reciprocal lift of screw thread portion 455 of axis of rotation 454, and make axis of rotation 454 realize reciprocal pivoted function, and then drive transmission bevel gear 456 reciprocal rotation, then realize the reciprocal rotation of transfer line 440 through driven bevel gear 457 rather than the meshing, and then drive the active carbon adsorption plate 470 reciprocal swing of installation on the installing frame 460, realize the even utilization of active carbon adsorption plate 470 positive and negative, help improving the dwell time of waste gas in jar body 410 simultaneously, improve adsorption effect.
Example 2:
referring to fig. 5-8, a VOCS exhaust gas collecting and detecting apparatus is substantially the same as that of embodiment 1, and further, a first dispersing mechanism 220 includes a mounting seat 221 installed at a junction of a main exhaust gas inlet pipe 210 and a secondary exhaust gas inlet pipe 230, a first nut seat 222 and a second nut seat 223 slidably installed at the mounting portion of the mounting seat 221, a driving screw 224 installed at the mounting portion of the mounting seat 221 and threadedly engaged with the first nut seat 222 and the second nut seat 223, and a scissor type connecting rod assembly 225 vertically installed on the first nut seat 222 and the second nut seat 223, wherein air inlets of the secondary exhaust gas inlet pipe 230 are uniformly distributed at a hinge point of the scissor type connecting rod assembly 225.
Referring to fig. 5-8, the exhaust gas collecting branch pipe 250 includes straight pipe collecting sections 251 and hose installing sections 252 which are distributed in a staggered manner, the straight pipe collecting sections 251 are provided with uniformly distributed collecting ports, and adjacent straight pipe collecting sections 251 are arranged in a V shape.
Referring to fig. 5 to 8, the second dispersion mechanism 240 includes a horizontally disposed slide bar 241 installed at a hinge point in the middle of the scissor linkage 225, evenly distributed sliders 242 slidably connected to the slide bar 241, a mounting groove opened on the slider 242 to be engaged with the hose mounting section 252, a spring 243 connected between the adjacent sliders 242 and fitted over the outer wall of the slide bar 241, a driving winding and unwinding wheel 244 installed on the outer wall of the slider 242 located in the middle, and a connection rope 245 installed between the driving winding and unwinding wheel 244 and the slider 242 at the end.
The first dispersion mechanism 220 and the second dispersion mechanism 240 are adjusted according to the dispersion range of the waste gas at the waste gas generation point, when the dispersion range of the waste gas generation point is small, the driving screw rod 224 is adjusted to drive the first screw base 222 and the second screw base 223 to be away from each other, at the same time, the scissor type connecting rod set 225 draws the sliding rods 241 on the adjacent second dispersion mechanism 240 to be close to each other, the gathering function in the vertical direction is realized, the driving winding and unwinding wheel 244 is opened for winding, the sliding blocks 242 are close to each other along with the gradual winding of the connecting rope 245 on the driving winding and unwinding wheel 244, the springs 243 are gradually drawn, the gathering function in the horizontal direction is further realized, at the same time, the included angle between the adjacent straight pipe collecting sections 251 on the waste gas collecting branch pipe 250 is reduced, the distribution of collecting ports is dense, the stable collecting function of the waste gas in a small range is realized, when the dispersion range of the waste gas generation point is large, the driving screw rod 224 is adjusted to drive the first screw base 222 and the second screw base 223 to be close to each other, shear type connecting rod group 225 extends this moment, it keeps away from each other to drive slide bar 241 on the adjacent second dispersion mechanism 240, realize the dispersion function of vertical direction, open drive simultaneously and receive and release reel 244 and unreel, along with connecting rope 245 and extend gradually under the effect of spring force 243 resilience force, slider 242 keeps away from each other, and then realize the function of gathering together of horizontal direction, the contained angle grow between the section 251 is collected to the adjacent straight tube on the branch pipe 250 is collected to waste gas this moment, it becomes the dispersion to gather mouthful distribution, thereby realize the stable function of collecting of waste gas on a large scale.
Example 3:
referring to fig. 5, a VOCS waste gas collecting and detecting device, which is substantially the same as that in embodiment 2, further, the top of the movable base 10 is further connected with a universal adjusting arm 260, the adjusting section of the universal adjusting arm 260 is fixedly connected with a mounting seat 221, the device is moved to a waste gas generating point through the movable base 10 during use, the angle of the collecting point is adjusted through the universal adjusting arm 260, further, the applicability of multi-angle collection is realized, and meanwhile, the negative pressure pump 60 is started, so that the absorption function of the main waste gas inlet pipe 210 on waste gas is realized.
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 the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A VOCS waste gas collecting and detecting device comprises a movable base (10) and is characterized by also comprising,
the washing tower (20), the washing tower (20) is installed on the top of the movable base (10), and is provided with an exhaust gas inlet for washing VOCs exhaust gas;
a drying filter cartridge (30) installed at an air outlet of the washing tower (20);
an adsorption tower (40) installed on the top of the movable susceptor (10) for adsorbing the waste gas of VOCs;
the detection unit (50) is connected between the air outlet end of the drying filter cylinder (30) and the air inlet end of the adsorption tower (40) and is used for detecting VOCs waste gas;
the negative pressure discharge unit is arranged at the air outlet end of the adsorption tower (40);
wherein the content of the first and second substances,
the inlet end of scrubbing tower (20) is connected with main waste gas and advances pipe (210), the one end that main waste gas advances pipe (210) and keeps away from scrubbing tower (20) is connected with the first dispersion mechanism (220) of vertical direction, the dispersion punishment department of first dispersion mechanism (220) is connected with and advances pipe (230) with the inferior waste gas of pipe (210) intercommunication into with main waste gas, the dispersion punishment department of first dispersion mechanism (220) still is connected with the second dispersion mechanism (240) that the level set up, the dispersion punishment department of second dispersion mechanism (240) is equipped with evenly distributed's waste gas collection branch pipe (250).
2. A VOCS exhaust gas collection and detection device according to claim 1, wherein the detection unit (50) comprises a main gas pipe (510) connected between the outlet end of the drying filter cartridge (30) and the inlet end of the adsorption tower (40), a secondary gas pipe (520) installed at the branch port of the main gas pipe (510), a gas storage tank (530) connected to the end of the secondary gas pipe (520) far away from the main gas pipe (510), a return pipe (540) connected to the outlet end of the gas storage tank (530) and communicated with the main gas pipe (510), and a gas detector (550) installed at the top of the gas storage tank (530) and having a detection probe placed in the inner cavity of the gas storage tank (530).
3. A VOCS exhaust gas collection and detection device according to claim 1, wherein the adsorption tower (40) comprises a tank body (410), a hollow shaft (420) installed at the central axis of the tank body (410), a transmission rod (440) rotatably connected to the outer wall of the hollow shaft (420) through a bracket (430) and extending towards the inner cavity of the hollow shaft (420), a reciprocating mechanism (450) connected to one end of the transmission rod (440) placed in the hollow shaft (420) and installed in the inner cavity of the hollow shaft (420), an installation frame (460) installed at one end of the transmission rod (440) placed outside the hollow shaft (420), a fixing groove opened at one side of the installation frame (460) far away from the transmission rod (440), and an activated carbon adsorption plate (470) embedded in the fixing groove.
4. A VOCS exhaust gas collection and detection device according to claim 3, wherein the reciprocating mechanism (450) comprises an automatic telescopic cylinder (451) installed at the top end of the hollow shaft (420), a telescopic rod (452) symmetrically installed at the output end of the automatic telescopic cylinder (451) and placed in the inner cavity of the hollow shaft (420), a threaded seat (453) installed at the telescopic end of the telescopic rod (452), a rotating shaft (454) rotatably connected to the central axis of the hollow shaft (420), a threaded portion (455) arranged at the top end of the rotating shaft (454) and in threaded fit with the threaded seat (453), a transmission bevel gear (456) sleeved on the outer wall of the rotating shaft (454), and a driven bevel gear (457) installed at one end of the transmission rod (440) placed in the inner cavity of the hollow shaft (420) and meshed with the transmission bevel gear (456).
5. A VOCS exhaust collection and detection device according to claim 4, wherein the negative pressure discharge unit comprises a negative pressure pump (60) mounted on the top of the tank (410), and the negative pressure end of the negative pressure pump (60) is connected with the air outlet of the tank (410).
6. A VOCS exhaust gas collecting and detecting apparatus as claimed in claim 1, wherein the first dispersing mechanism (220) comprises a mounting seat (221) installed at a junction of the primary exhaust gas inlet pipe (210) and the secondary exhaust gas inlet pipe (230), a first nut block (222) and a second nut block (223) slidably installed at a mounting portion of the mounting seat (221), a driving screw (224) installed at the mounting portion of the mounting seat (221) and threadedly engaged with the first nut block (222) and the second nut block (223), and a scissor type linkage (225) vertically installed on the first nut block (222) and the second nut block (223), wherein air inlets of the secondary exhaust gas inlet pipe (230) are uniformly distributed at a hinge point of the scissor type linkage (225).
7. A VOCS exhaust collection and detection device according to claim 6, wherein the exhaust collection branch pipe (250) comprises straight pipe collection sections (251) and hose installation sections (252) which are distributed in a staggered manner, the straight pipe collection sections (251) are provided with uniformly distributed collection ports, and adjacent straight pipe collection sections (251) are arranged in a V shape.
8. A VOCS exhaust collection and detection device according to claim 7, wherein the second dispersion mechanism (240) comprises a horizontally arranged slide bar (241) installed at the hinge point in the middle of the scissor linkage (225), evenly distributed sliders (242) slidably connected to the slide bar (241), an installation slot opened on the slider (242) to be matched with the hose installation section (252), a spring (243) connected between adjacent sliders (242) and sleeved on the outer wall of the slide bar (241), a driving winding and unwinding wheel (244) installed on the outer wall of the slider (242) in the middle, and a connection rope (245) installed between the driving winding and unwinding wheel (244) and the slider (242) at the end.
9. A VOCS exhaust collection and detection device according to claim 8, wherein a universal adjusting arm (260) is further connected to the top of the movable base (10), and the adjusting section of the universal adjusting arm (260) is fixedly connected to the mounting base (221).
10. A method of using a VOCS exhaust collection and detection device as claimed in any one of claims 1 to 9, comprising the steps of:
s1: when the device is used, the device is moved to a waste gas generating point through the movable base (10), the angle of the collecting point is adjusted through the universal adjusting arm (260), so that the applicability of multi-angle collection is realized, and meanwhile, the negative pressure pump (60) is started, so that the waste gas absorption function of the main waste gas inlet pipe (210) is realized;
s2: adjusting a first dispersion mechanism (220) and a second dispersion mechanism (240) according to the dispersion range of waste gas at a waste gas generation point, when the dispersion range of the waste gas generation point is small, adjusting a driving screw rod (224) to drive a first screw base (222) and a second screw base (223) to be away from each other, closing slide rods (241) on the adjacent second dispersion mechanism (240) by a scissor type connecting rod set (225) at the moment to be close to each other to realize the gathering function in the vertical direction, simultaneously opening a driving winding and unwinding wheel (244) to wind, gradually winding a connecting rope (245) on the driving winding and unwinding wheel (244), enabling slide blocks (242) to be close to each other, gradually closing a spring (243) to further realize the gathering function in the horizontal direction, reducing the included angle between adjacent straight pipe collection sections (251) on a waste gas collection branch pipe (250) at the moment, enabling the distribution of collection ports to be dense, and further realizing the stable collection function of the waste gas in a small range, when the dispersion range of the waste gas generation points is large, the adjusting driving screw rod (224) drives the first screw seat (222) and the second screw seat (223) to be close to each other, the shear type connecting rod group (225) extends to drive the sliding rods (241) on the adjacent second dispersion mechanisms (240) to be away from each other at the moment, the dispersion function in the vertical direction is realized, meanwhile, the driving winding and unwinding wheel (244) is started to unwind, the sliding blocks (242) are away from each other along with the gradual extension of the connecting rope (245) under the action of the resilience force of the spring (243), the gathering function in the horizontal direction is further realized, the included angle between the adjacent straight pipe collection sections (251) on the waste gas collection branch pipe (250) is enlarged, the distribution of collection openings is dispersed, and the stable collection function of the waste gas in a large range is realized;
s3: the collected waste gas enters the main waste gas inlet pipe (210) through the secondary waste gas inlet pipe (230) and then enters the washing tower (20) for washing, so that the absorption function is realized, and meanwhile, the temperature can be well reduced;
s4: the cooled waste gas passes through the main gas pipe (510) and enters the gas storage tank (530) along the secondary gas guide pipe (520), the waste gas entering the gas storage tank (530) is detected by the gas detector (550) to be beneficial to analyzing the components of the waste gas, and then the waste gas enters the main gas pipe (510) through the return pipe (540) and flows towards the inner cavity of the adsorption tower (40);
s5: open automatic telescopic cylinder (451) and realize the reciprocal flexible of telescopic link (452), at the reciprocal flexible in-process of telescopic link (452), drive screw thread seat (453) along screw thread portion (455) reciprocal lift of axis of rotation (454), and make axis of rotation (454) realize reciprocal pivoted function, and then drive transmission bevel gear (456) reciprocal rotation, then realize the reciprocal rotation of transfer line (440) through driven bevel gear (457) rather than the meshing, and then drive the active carbon adsorption board (470) reciprocal swing of installation on installing frame (460), realize the even utilization of active carbon adsorption board (470) positive and negative, help improving the detention time of waste gas in jar body (410) simultaneously, improve adsorption effect.
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