CN111482080B - Waste gas treatment device for high-frequency heat sealing machine - Google Patents
Waste gas treatment device for high-frequency heat sealing machine Download PDFInfo
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- CN111482080B CN111482080B CN202010318277.4A CN202010318277A CN111482080B CN 111482080 B CN111482080 B CN 111482080B CN 202010318277 A CN202010318277 A CN 202010318277A CN 111482080 B CN111482080 B CN 111482080B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/869—Multiple step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8643—Removing mixtures of carbon monoxide or hydrocarbons and nitrogen oxides
- B01D53/8646—Simultaneous elimination of the components
- B01D53/8653—Simultaneous elimination of the components characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/002—Removing toxic gases
Abstract
The invention provides a waste gas treatment device for a high-frequency heat sealing machine, which comprises: the heat sealing machine comprises a heat sealing machine body, wherein an air suction pipeline is arranged in a table top of the heat sealing machine body, and a port of the air suction pipeline faces to a working area of the heat sealing machine body; an air exhaust device is arranged at a port close to a working area in the air suction pipeline and used for sucking air in the working area into the air suction pipeline; and the waste gas treatment device is also arranged in the air suction pipeline and is used for adsorbing and filtering harmful gas flowing through. The waste gas treatment device 40 provided by the invention can be used for conveniently, quickly and effectively treating harmful gas generated by the heat sealing machine, has a reasonable structure, and cannot interfere the heat sealing operation of the heat sealing machine.
Description
Technical Field
The invention relates to the technical field of heat sealing machines, in particular to a waste gas treatment device for a high-frequency heat sealing machine.
Background
Toxic gas refers to the poisonous and harmful gas discharged by human in the process of production and life. Especially chemical plants, steel plants, pharmaceutical plants, coking plants and oil refineries, etc., and the discharged toxic gas has large odor, seriously pollutes the environment and affects the human health. The toxic gas contains a large amount of harmful gas, and is discharged after being decontaminated, and the existing toxic gas treatment device has poor treatment effect on the toxic gas, so that the treated gas is still discharged into the atmosphere to pollute the environment, and raw materials are wasted in the toxic gas treatment process. In the production flow in the chemical industry, gas substances are usually involved in the reaction, and the gas substances comprise toxic gas, waste gas, reaction gas mixed with impurities for reaction, purified gas for discharging air and the like. In the existing chemical industry, there are various protection or alarm modes for gas leakage, such as an alarm mode realized by the value change of a pressure gauge, the detection and monitoring of gas leakage, etc., but the various detection modes are all that toxic gas is leaked in the air and then detected, at this moment, the air is mixed with toxic gas, if the toxic gas is spread, even if the toxic gas is timely treated and prevented from leaking, the toxic gas in the air can only be discharged or chemically treated, etc., and the most common situation is that when the toxic gas is leaked, an operator inhales the toxic gas, and bad response or health hazard is generated. However, in the prior art, a patent that a port of related chemical equipment is wrapped by an air bag and the like is applied, although the method can prevent toxic gas from leaking into the air at the first time, the method does not have related alarm warning or intuitively reflects the toxic gas to be transmitted to an operator, and does not instruct the equipment to stop, if the toxic gas is not found in time, the more toxic gas is continuously filled into the air bag, the more toxic gas reaches a critical point, the explosion or explosion of the air bag can happen, and the risk that the toxic gas leaks into the air still exists.
The high-frequency heat sealing machine utilizes the electromagnetic field of high-frequency change to make the inside polar molecule of plastics twist reverse repeatedly and produce the heat, and then reach the purpose of melting the plastics, and its welded temperature is even in the surface, and the in-process that the high-frequency heat sealing machine was using is because the fusion is plastics, probably produces toxic gas, and the most component of these toxic gas is formed for volatile organic compound, can cause the threat to operating personnel's personal health, serious can cause disabled industrial injury accident even.
Disclosure of Invention
The invention aims to provide an exhaust gas treatment device for a high-frequency heat sealing machine to solve the problems.
In order to achieve the purpose, the invention provides the following technical scheme: an exhaust gas treatment device for a high-frequency heat sealing machine, comprising:
the heat sealing machine comprises a heat sealing machine body, wherein an air suction pipeline is arranged in a table top of the heat sealing machine body, and a port of the air suction pipeline faces to a working area of the heat sealing machine body;
an air exhaust device is arranged at a port close to a working area in the air suction pipeline and used for sucking air in the working area into the air suction pipeline;
and the waste gas treatment device is also arranged in the air suction pipeline and is used for adsorbing and filtering harmful gas flowing through.
As an improvement of the invention, along the flowing direction of the waste gas, the waste gas treatment device sequentially comprises a cooling and separating device, a first reactor and a second reactor, wherein the cooling and separating device is used for reducing the temperature of the waste gas, the first reactor is used for filtering harmful carbonized gas, and the second reactor is used for filtering harmful nitrided gas.
As an improvement of the present invention, the cooling precipitation device includes:
the inner part of the precipitation shell is divided into an air inlet chamber, a cooling chamber and a precipitation chamber by two isolation plates;
the cooling cavity is internally provided with a plurality of air guide pipes, the air guide pipes are used for communicating the air inlet cavity with the precipitation cavity, the part of the air guide pipes, which is close to the air inlet cavity, is corrugated, and the part of the air guide pipes, which is close to the precipitation cavity, is straight tubular;
the space enclosed by the outer wall of the air guide pipe and the inner wall of the precipitation shell is a refrigerant channel, the side wall of the cooling cavity is provided with an inlet and an outlet, and the inlet and the outlet are used for discharging and discharging the refrigerant;
the collection dirt filters the piece, it is provided with a collection dirt and filters the piece to separate out in the cavity, the collection dirt is filtered and is provided with the multilayer filter screen on filtering the piece.
As a refinement of the invention, the first reactor is a DOC reactor.
As a refinement of the invention, the second reactor is an SCR reactor.
As an improvement of the present invention, a quantitative circulation device is further disposed on the air suction pipeline, and the quantitative circulation device includes:
the measuring pipeline is in a disc shape and is connected in series with the air suction pipeline;
the measuring rotating wheel is rotatably arranged in the measuring pipeline and driven by airflow to rotate;
the quantitative protection shell is fixedly connected to the side wall of the heat sealing machine body, and a quantitative setting assembly is arranged in the quantitative protection shell;
the tail end of the air suction pipeline is provided with a three-way air valve, one valve port of the three-way air valve is communicated with the outside, and the other valve port of the three-way air valve is connected with a circulating pipeline;
one end of the circulating pipeline, which is far away from the three-way air valve, is connected to the upstream of the air suction pipeline;
the quantitative setting assembly comprises:
the quantitative protection shell is internally and rotatably provided with a plurality of rotating shafts which are arranged in a straight line, wherein the rotating shaft positioned on the outermost side is coaxially connected with the estimation rotating wheel;
the transmission gear sets are arranged on the rotating shafts, and the rotating speed ratio of the transmission gear sets is sequentially reduced along the arrangement direction of the rotating shafts;
the quantitative protection shell is internally provided with a plurality of rotating sleeves in an rotating manner, the rotating sleeves are arranged in an arc shape, each rotating sleeve corresponds to one rotating shaft, and each rotating sleeve is in transmission connection with the corresponding rotating shaft through a synchronous belt;
the front end of the rotating sleeve is provided with an arc track frame which is fixedly connected to the inner wall of the quantitative protective shell, and the arc framework of the arc track frame is overlapped with the arc arrangement of the rotating sleeve;
the rotating block is movably arranged in a slide way arranged on the arc-shaped track frame, the rotating block is coaxially and fixedly connected with the rotating sleeve through a plug pin shaft, and the plug pin shaft penetrates through the quantitative protective shell and extends to the outside;
the quantitative protective shell is internally provided with a deflector rod rotating disc, the deflector rod rotating disc is in transmission connection with the rotating block through a synchronous belt, and an inner peripheral tooth surface is arranged in a groove in the end surface of the deflector rod rotating disc;
the quantitative protection shell is provided with a fixed-quantity protection shell, the fixed-quantity protection shell is arranged on the fixed-quantity protection shell, the fixed-quantity protection shell is connected with the fixed-quantity protection shell in a transmission mode through a transmission disc, and the outer circumferential tooth surface of the transmission disc is meshed with.
As an improvement of the invention, the transmission gear set is a combination of a large gear and a small gear, two adjacent rotating shafts are meshed and connected through the large gear and the small gear, wherein the small gear is sleeved on the front-end rotating shaft, and the large gear is sleeved on the rear-end rotating shaft.
As an improvement of the present invention, the measuring wheel is further provided with a rotation speed sensor, the rotation speed sensor is connected to a signal transmission system, the signal transmission system includes an amplification feedback circuit, and the amplification feedback circuit includes:
a first operational amplifier AR1, the non-inverting input terminal of which is connected to the signal input terminal X1, the inverting input terminal of which is grounded, and the output terminal of which is connected to the collector of the first transistor Q1;
a first triode Q1, the base of which is connected with the non-inverting input terminal of the first operational amplifier AR1 through a third capacitor C3, the emitter of which is connected with the anode of a second diode D2 in sequence;
a second diode D2 having a cathode connected to the cathode of a first diode D1, the anode of the first diode D1 being connected to the non-inverting input of the first operational amplifier AR 1;
a first capacitor C1, both ends of which are connected to the anode of the first diode D1 and the anode of the second diode D2, respectively;
a third triode Q3, the emitter of which is connected to the anode of the second diode D2 and the emitter of the first triode Q1, respectively, the collector of which is connected to the signal outlet terminal X2, and the base of which is connected to the emitter of the first triode Q1 and the resistor R10, respectively;
a resistor R10, one end far away from the first triode Q1 is connected with the collector of a fourth triode Q4;
a fourth triode Q4, an emitter of which is connected with the inverting input terminal of the fourth operational amplifier AR4, and a base of the fourth triode Q4 is connected with the non-inverting input terminal of the third operational amplifier AR3 through a resistor R8;
a third operational amplifier AR3, the inverting input terminal of which is grounded through a resistor R4, the output terminal of the third operational amplifier AR3 being connected to the non-inverting input terminal of the fourth operational amplifier AR 4;
a fourth operational amplifier AR4, the output terminal of which is connected to the signal output terminal;
the signal input end of the fourth capacitor C4 is further connected with a fourth capacitor C4, and the other end of the fourth capacitor C4 is further connected with the non-inverting input end of the second operational amplifier AR2 sequentially through a resistor R7, a resistor R9 and a capacitor C3;
one end of the resistor R9, which is connected to the capacitor C3, is further connected to a base of the first triode Q1 and a fifth resistor R5, the other end of the fifth resistor R5 is connected to a sixth resistor R6 and a second capacitor C2, respectively, and the other ends of the second capacitor C2 and the resistor R6 are connected to an inverting input terminal of the second operational amplifier AR 2;
a fifth capacitor C5, the signal input end is further connected with a fifth capacitor C5, the other end of the fifth capacitor C5 is connected with a resistor R2, the other end of the resistor R2 is respectively connected with the base of the second triode Q2 and the variable resistor RW1, and the variable resistor RW1 is grounded;
an emitter of the second triode Q2 is connected with one end of the resistor R7, which is connected with the resistor R9, and a collector of the second triode Q2 is grounded through a resistor R1;
an emitter of the fifth triode Q5 is connected with a collector of the second triode Q2, a base of the fifth triode Q5 is connected with a non-inverting input end of the third operational amplifier AR3 through a resistor R8, and a collector of the fifth triode Q5 is connected with an output end of the fifth operational amplifier AR 5;
the inverting input terminal of the fifth operational amplifier AR5 is connected to the collector of the fifth transistor Q5, and the non-inverting input terminal thereof is connected to the non-inverting input terminal of the fourth operational amplifier AR 4.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the construction of an exhaust gas treatment apparatus according to the present invention;
FIG. 3 is a schematic structural view of a cooling and precipitating device according to the present invention;
FIG. 4 is a side view of the quantitative circulation device of the present invention;
FIG. 5 is a schematic view of the quantitative setup assembly of the present invention;
FIG. 6 is a front view of the dosing assembly of the present invention;
fig. 7 is a circuit diagram of an amplification feedback circuit.
The components in the figure are:
10-a heat-sealing machine body, wherein,
20-a gas-suction duct, which,
30-an air exhaust device, wherein,
40-a waste gas treatment device, 41-a cooling precipitation device, 411-a precipitation shell, 412-an isolation plate, 413-an air inlet chamber, 414-a cooling chamber, 415-a precipitation chamber, 416-an air guide pipe, 417-a refrigerant channel, 418-a dust collection filter, 42-a first reactor, 43-a second reactor,
50-quantitative circulating device, 51-measuring pipeline, 52-measuring rotating wheel, 53-quantitative protective shell, 54-three-way air valve, 55-circulating pipeline,
60-quantitative setting component, 61-rotating shaft, 62-transmission gear set, 63-rotating sleeve, 64-synchronous belt, 65-arc track frame, 66-rotating block, 67-plug pin shaft, 68-deflector rod rotating disc, 69-inner peripheral tooth surface, 610-deflector rod, 611-driving disc.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 1, an exhaust gas treatment device for a high frequency heat sealing machine includes:
the heat sealing machine comprises a heat sealing machine body 10, wherein an air suction pipeline 20 is arranged in a table top of the heat sealing machine body 10, and a port of the air suction pipeline 20 faces to a working area of the heat sealing machine body 10;
an exhaust device 30 is arranged at a port close to a working area in the air suction pipeline 20, and the exhaust device 30 is used for sucking air in the working area into the air suction pipeline 20;
and the exhaust gas treatment device 40 is arranged in the air suction pipeline 20, and the exhaust gas treatment device 40 is used for adsorbing and filtering harmful gases flowing through.
The working principle of the technical scheme is as follows: the high-frequency heat sealing machine can generate certain harmful gas when heating plastic products, in order to avoid the harmful gas from directly diffusing to the air, the air suction pipeline 20 is arranged on the working table surface of the heat sealing machine body 10, the harmful gas generated in the heat sealing process is sucked into the air suction pipeline 20 by the exhaust device 30, so that the waste gas treatment device 40 can treat the harmful gas, and the harmful gas is discharged into the air after the treatment is finished.
The beneficial effects of the above technical scheme are that: the waste gas treatment device 40 provided by the invention can be used for conveniently, quickly and effectively treating harmful gas generated by the heat sealing machine, has a reasonable structure, and cannot interfere the heat sealing operation of the heat sealing machine. The waste gas treatment device provided by the invention can effectively collect gas on the working table surface, absorb and filter the gas, and prevent the gas from being discharged into the air when a high-frequency heat sealing machine works to generate toxic gas, so that the environmental pollution is caused, and the safety accident is avoided.
As an embodiment of the present invention, the exhaust gas treatment device 40 sequentially includes a temperature reduction and separation device 41, a first reactor 42, and a second reactor 43 along the exhaust gas flowing direction, wherein the temperature reduction and separation device 41 is used for reducing the temperature of the exhaust gas, the first reactor 42 is used for filtering harmful carbonized gas, and the second reactor 43 is used for filtering harmful nitrided gas.
The cooling precipitation device 41 includes:
the inner part of the precipitation housing 411 is divided into an air inlet chamber 413, a cooling chamber 414 and a precipitation chamber 415 by two isolation plates 412;
a plurality of air ducts 416 are arranged in the cooling chamber 414, the air ducts 416 communicate the air inlet chamber 413 with the precipitation chamber 415, the part of the air ducts 416 close to the air inlet chamber 413 is corrugated, and the part of the air ducts 416 close to the precipitation chamber 415 is straight-tube-shaped;
a refrigerant passage 417, a space surrounded by the outer wall of the gas guide tube 416 and the inner wall of the precipitation housing 411 is the refrigerant passage 417, and an inlet and an outlet are formed on the side wall of the cooling chamber 414 and used for discharging the refrigerant;
a dust collection filter 418 disposed within the precipitation chamber 415, the dust collection filter 418 having a plurality of layers of filter mesh disposed thereon.
The first reactor 42 is a DOC reactor DOC (Diesel oxidation catalyst).
The second reactor 43 is an SCR reactor (Selective Catalytic Reduction).
The working principle and the beneficial effects of the technical scheme are as follows: because the harmful gas that the heat-sealing machine produced in the during operation has a large amount of heats, consequently need earlier carry out earlier stage cooling treatment to this harmful gas through cooling separation device 41 to separate out the gas that wherein the condensation degree is lower, and filter solid particle impurity wherein, in order to avoid influencing subsequent chemical processor's treatment effect.
As an embodiment of the present invention, a quantitative circulation device 50 is further disposed on the air suction duct 20, and the quantitative circulation device 50 includes:
an evaluation duct 51 in the shape of a disk, the evaluation duct 51 being connected in series in the suction duct 20;
an estimating wheel 52 is rotatably arranged in the estimating pipeline 51, and the estimating wheel 52 is driven by the airflow to rotate;
the quantitative protective shell 53 is fixedly connected to the side wall of the heat sealing machine body 10, and a quantitative setting component 60 is arranged in the quantitative protective shell 53;
a three-way air valve 54 is arranged at the tail end of the air suction pipeline 20, one valve port of the three-way air valve 54 is communicated with the outside, and the other valve port is connected with a circulating pipeline;
a circulation line 55, the end of which remote from the three-way valve 54 is connected upstream of the suction line 20;
the dosing assembly 60 comprises:
a plurality of rotating shafts 61 arranged in a straight line are rotatably arranged in the quantitative protective shell 53, wherein the rotating shaft 61 positioned on the outermost side is coaxially connected with the measuring rotating wheel 52;
the transmission gear sets 62 are arranged on the rotating shafts 61, and the rotating speed ratio of the transmission gear sets 62 is sequentially reduced along the arrangement direction of the rotating shafts 61;
a plurality of rotating sleeves 63 are rotatably arranged in the quantitative protective shell 53, the plurality of rotating sleeves 63 are arranged in an arc shape, each rotating sleeve 63 corresponds to one rotating shaft 61, and each rotating sleeve 63 is in transmission connection with the corresponding rotating shaft 61 through a synchronous belt 64;
the quantitative protective shell 53 is provided with an arc track frame 65, the front end of the rotating sleeve 63 is provided with the arc track frame 65, the arc track frame 65 is fixedly connected to the inner wall of the quantitative protective shell 53, and the arc framework of the arc track frame 65 is overlapped with the arc arrangement of the rotating sleeve 63;
the rotating block 66 is movably arranged in a slide way arranged on the arc-shaped track frame 65, the rotating block 66 is coaxially and fixedly connected with the rotating sleeve 63 through a plug pin shaft 67, and the plug pin shaft 67 penetrates through the quantitative protective shell 53 and extends to the outside;
a deflector rod rotating disc 68, wherein a deflector rod rotating disc 68 is further arranged in the quantitative protective shell 53, the deflector rod rotating disc 68 is in transmission connection with the rotating block 66 through a synchronous belt, and an inner peripheral tooth surface 69 is arranged in an end surface groove of the deflector rod rotating disc 68;
the outer wall of the quantitative protection shell 53 is provided with a shifting lever 610, the shifting lever 610 extends into the quantitative protection shell 53 and is in transmission connection with the shifting lever rotating disc 68 through a transmission disc 611, the shifting lever 610 is used for shifting the reversing lever of the three-way air valve 54, and the outer peripheral tooth surface of the transmission disc 611 is meshed with the inner peripheral tooth surface 69 of the shifting lever rotating disc 68.
The transmission gear set 62 is a combination of a large gear and a small gear, two adjacent rotating shafts are meshed and connected through the large gear and the small gear, the small gear is sleeved on the front-end rotating shaft, and the large gear is sleeved on the rear-end rotating shaft.
The working principle and the beneficial effects of the technical scheme are as follows: the gas generated by the heat sealing machine during heat sealing is generally difficult to completely filter after passing through the treatment device, and the discharged gas also has part of harmful substances, so that the harmful gas needs to be circularly filtered. However, in the circulating process, after the filtering is carried out to a certain degree, the filtering effect is obviously reduced, and at the moment, the gases can be discharged, so that the filtering cost is saved, and the filtering effect is improved. However, at present, the number of times of circulation or the circulation time cannot be controlled accurately and conveniently, and more is manual operation performed by manually judging the duration.
Therefore, a constant-quantity circulating device is arranged on the original exhaust gas treatment device. When the waste gas needs to be circularly treated, the circulating flux is controlled by a quantitative circulating device, and the filtered gas is automatically discharged into the air after the specified circulating flux is reached.
In the quantitative circulating device, an estimation pipeline 51 and an estimation runner 52 are used for monitoring the circulating flux of gas, the estimation pipeline 51 is connected in series with an air suction pipeline 20, and the circulating flux of the gas flowing through the waste gas treatment device can be estimated according to the rotation number of the estimation runner 52;
the quantitative protection shell 53 is directly arranged on the outer wall of the heat sealing machine body 10 and is used for providing an installation space for the quantitative setting component 60, and in addition, the quantitative setting component 60 is coaxially connected with the measuring rotating wheel 52 in a transmission way;
the function of the quantitative setting assembly 60 is to adjust the circulation flux of the gas as needed, and to stop the circulation after reaching a designated circulation flux and discharge the gas into the air. Because the rotating speeds of the rotating shafts 61 arranged in a straight line are sequentially decreased from left to right, the rotating block 66 and the rotating sleeve 63 coaxially connected with the rotating block are selected through the plugging pin shaft 67 (namely, in the rotating sleeve 63 arranged in an arc shape, the rotating sleeve 63 respectively corresponds to one rotating shaft 61, so that the rotating speeds of the rotating sleeve 63 are also sequentially decreased from left to right);
the deflector rod rotating disc 68, the deflector rod 610 and the transmission disc 611 are used for driving the deflector rod 610 to rotate through the deflector rod rotating disc 68 until the deflector rod 610 rotates to the reversing rod of the three-way air valve 54, and the deflector rod 610 stirs the reversing rod to realize the flowing direction of the three-way air valve 54, so that the circular flowing of the gas can be changed into the discharging flowing;
when the rotating block 66 and the leftmost rotating sleeve 63 rotate synchronously, the rotating speed of the leftmost rotating sleeve 63 is fastest, so that the shifting lever 610 can reach the reversing rod of the three-way air valve 54 in the shortest time, the three-way air valve 54 is reversed, and the circulation is stopped; when the rotating block 66 and the rightmost rotating sleeve 63 rotate synchronously, the rotating rod 610 reaches the reversing rod of the three-way air valve 54 in the longest time because the rightmost rotating sleeve 63 rotates at the slowest speed, so that the three-way air valve 54 is reversed, and the circulation is stopped.
The rotating sleeve 63 with different rotating speeds is selected through the plug pin shaft 67, so that automatic control of different exhaust gas treatment circulating fluxes is realized, convenience and rapidness are realized, the treatment cost is reduced, and the treatment effect is improved.
As an embodiment of the present invention, a rotation speed sensor is further disposed on the screw rod, the rotation speed sensor is connected to a signal transmission system, the signal transmission system includes an amplification feedback circuit, and the amplification feedback circuit includes:
a first operational amplifier AR1, the non-inverting input terminal of which is connected to the signal input terminal X1, the inverting input terminal of which is grounded, and the output terminal of which is connected to the collector of the first transistor Q1;
a first triode Q1, the base of which is connected with the non-inverting input terminal of the first operational amplifier AR1 through a third capacitor C3, the emitter of which is connected with the anode of a second diode D2 in sequence;
a second diode D2 having a cathode connected to the cathode of a first diode D1, the anode of the first diode D1 being connected to the non-inverting input of the first operational amplifier AR 1;
a first capacitor C1, both ends of which are connected to the anode of the first diode D1 and the anode of the second diode D2, respectively;
a third triode Q3, the emitter of which is connected to the anode of the second diode D2 and the emitter of the first triode Q1, respectively, the collector of which is connected to the signal outlet terminal X2, and the base of which is connected to the emitter of the first triode Q1 and the resistor R10, respectively;
a resistor R10, one end far away from the first triode Q1 is connected with the collector of a fourth triode Q4;
a fourth triode Q4, an emitter of which is connected with the inverting input terminal of the fourth operational amplifier AR4, and a base of the fourth triode Q4 is connected with the non-inverting input terminal of the third operational amplifier AR3 through a resistor R8;
a third operational amplifier AR3, the inverting input terminal of which is grounded through a resistor R4, the output terminal of the third operational amplifier AR3 being connected to the non-inverting input terminal of the fourth operational amplifier AR 4;
a fourth operational amplifier AR4, the output terminal of which is connected to the signal output terminal;
the signal input end of the fourth capacitor C4 is further connected with a fourth capacitor C4, and the other end of the fourth capacitor C4 is further connected with the non-inverting input end of the second operational amplifier AR2 sequentially through a resistor R7, a resistor R9 and a capacitor C3;
one end of the resistor R9, which is connected to the capacitor C3, is further connected to a base of the first triode Q1 and a fifth resistor R5, the other end of the fifth resistor R5 is connected to a sixth resistor R6 and a second capacitor C2, respectively, and the other ends of the second capacitor C2 and the resistor R6 are connected to an inverting input terminal of the second operational amplifier AR 2;
a fifth capacitor C5, the signal input end is further connected with a fifth capacitor C5, the other end of the fifth capacitor C5 is connected with a resistor R2, the other end of the resistor R2 is respectively connected with the base of the second triode Q2 and the variable resistor RW1, and the variable resistor RW1 is grounded;
an emitter of the second triode Q2 is connected with one end of the resistor R7, which is connected with the resistor R9, and a collector of the second triode Q2 is grounded through a resistor R1;
an emitter of the fifth triode Q5 is connected with a collector of the second triode Q2, a base of the fifth triode Q5 is connected with a non-inverting input end of the third operational amplifier AR3 through a resistor R8, and a collector of the fifth triode Q5 is connected with an output end of the fifth operational amplifier AR 5;
the inverting input terminal of the fifth operational amplifier AR5 is connected to the collector of the fifth transistor Q5, and the non-inverting input terminal thereof is connected to the non-inverting input terminal of the fourth operational amplifier AR 4.
The working principle and the beneficial effects of the technical scheme are as follows: the amplification feedback circuit that this embodiment provided utilizes electric capacity, triode, operational amplifier to constitute a plurality of amplification feedback operation branch roads, and the signal of these a plurality of operation branch roads has the same frequency and the characteristic of different amplitudes, goes into the operation branch road and carries out comparison feedback after making an uproar earlier stage in the noise reduction circuit that constitutes through first operational amplifier AR1, second diode D2, first diode D1, under the prerequisite that reduces signal noise, constitutes filter circuit again and filters interfering signal to improve signal transmission quality.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. An exhaust gas treatment device for a high-frequency heat sealing machine, comprising:
the heat sealing machine comprises a heat sealing machine body (10), wherein an air suction pipeline (20) is arranged in a table top of the heat sealing machine body, and a port of the air suction pipeline (20) faces to a working area of the heat sealing machine body (10);
the air exhaust device (30) is arranged at a port, close to a working area, in the air suction pipeline (20), and the air exhaust device (30) is used for sucking air in the working area into the air suction pipeline (20);
the exhaust gas treatment device (40) is further arranged in the air suction pipeline (20), and the exhaust gas treatment device (40) is used for adsorbing and filtering harmful gas flowing through;
the air suction pipeline (20) is also provided with a quantitative circulating device (50), and the quantitative circulating device (50) comprises:
-an evaluation duct (51) in the shape of a disc, said evaluation duct (51) being connected in series in said suction duct (20);
the measuring rotating wheel (52) is rotatably arranged in the measuring pipeline (51), and the measuring rotating wheel (52) is driven by the airflow to rotate;
the quantitative protection shell (53) is fixedly connected to the side wall of the heat sealing machine body (10), and a quantitative setting assembly (60) is arranged in the quantitative protection shell (53);
the tail end of the air suction pipeline (20) is provided with a three-way air valve (54), one valve port of the three-way air valve (54) is communicated with the outside, and the other valve port is connected with a circulating pipeline;
a circulation duct (55) having an end remote from the three-way valve (54) connected upstream of the suction duct (20);
the dosing assembly (60) comprises:
the rotating shaft (61) is provided with a plurality of rotating shafts (61) which are arranged in a straight line in the quantitative protective shell (53) in a rotating mode, and the rotating shaft (61) positioned on the outermost side is coaxially connected with the estimation rotating wheel (52);
the transmission gear sets (62) are arranged on the rotating shafts (61), and the rotating speed ratio of the transmission gear sets (62) is sequentially reduced along the arrangement direction of the rotating shafts (61);
the quantitative protection shell (53) is internally and rotatably provided with a plurality of rotating sleeves (63), the rotating sleeves (63) are arranged in an arc shape, each rotating sleeve (63) corresponds to one rotating shaft (61), and each rotating sleeve (63) is in transmission connection with the corresponding rotating shaft (61) through a synchronous belt (64);
the quantitative protective shell comprises an arc-shaped track frame (65), wherein the arc-shaped track frame (65) is arranged at the front end of the rotating sleeve (63), the arc-shaped track frame (65) is fixedly connected to the inner wall of the quantitative protective shell (53), and the arc-shaped framework of the arc-shaped track frame (65) is overlapped with the arc arrangement of the rotating sleeve (63);
the rotating block (66) is movably arranged in a slide way formed in the arc-shaped track frame (65), the rotating block (66) is coaxially and fixedly connected with the rotating sleeve (63) through a plug pin shaft (67), and the plug pin shaft (67) penetrates through the quantitative protective shell (53) and extends to the outside;
a deflector rod rotating disc (68), wherein a deflector rod rotating disc (68) is further arranged in the quantitative protective shell (53), the deflector rod rotating disc (68) is in transmission connection with the rotating block (66) through a synchronous belt, and an inner peripheral tooth surface (69) is arranged in a groove in the end surface of the deflector rod rotating disc (68);
the quantitative protection device comprises a driving lever (610), wherein the driving lever (610) is arranged on the outer wall of the quantitative protection shell (53), the driving lever (610) extends into the quantitative protection shell (53) and is in transmission connection with a driving lever rotating disc (68) through a driving disc (611), the driving lever (610) is used for driving a reversing rod of the three-way air valve (54), and the outer peripheral tooth surface of the driving disc (611) is meshed with the inner peripheral tooth surface (69) of the driving lever rotating disc (68).
2. The apparatus according to claim 1, wherein said exhaust gas treatment device comprises: along the waste gas circulation direction, exhaust treatment device (40) are in proper order including cooling and are appeared device (41), first reactor (42), second reactor (43), cooling is appeared device (41) and is used for reducing the temperature of waste gas, first reactor (42) are used for filtering harmful carbonized gas, second reactor (43) are used for filtering harmful nitrided gas.
3. The apparatus according to claim 2, wherein said exhaust gas treatment device comprises: the cooling precipitation device (41) comprises:
the device comprises an extraction shell (411), wherein the interior of the extraction shell (411) is divided into an air inlet chamber (413), a cooling chamber (414) and an extraction chamber (415) by two isolation plates (412);
the cooling chamber (414) is internally provided with a plurality of air ducts (416), the air ducts (416) communicate the air inlet chamber (413) with the precipitation chamber (415), the part of the air ducts (416) close to the air inlet chamber (413) is corrugated, and the part of the air ducts (416) close to the precipitation chamber (415) is straight tubular;
a space surrounded by the outer wall of the air duct (416) and the inner wall of the precipitation housing (411) is a refrigerant channel (417), the side wall of the cooling cavity (414) is provided with an inlet and an outlet, and the inlet and the outlet are used for discharging and discharging refrigerant;
a dust collecting filter element (418), a dust collecting filter element (418) is arranged in the precipitation chamber (415), and a plurality of layers of filter screens are arranged on the dust collecting filter element (418).
4. The apparatus according to claim 2, wherein said exhaust gas treatment device comprises: the first reactor (42) is a DOC reactor.
5. The apparatus according to claim 2, wherein said exhaust gas treatment device comprises: the second reactor (43) is an SCR reactor.
6. The waste gas treatment device for the high-frequency heat sealing machine according to claim 1, wherein the transmission gear set (62) is a combination of a large gear and a small gear, two adjacent rotating shafts are meshed and connected through the large gear and the small gear, the small gear is sleeved on the front rotating shaft, and the large gear is sleeved on the rear rotating shaft.
7. The apparatus of claim 1, wherein the evaluation wheel further comprises a rotation speed sensor, the rotation speed sensor is connected to a signal transmission system, the signal transmission system comprises an amplification feedback circuit, and the amplification feedback circuit comprises:
a first operational amplifier AR1, the non-inverting input terminal of which is connected to the signal input terminal X1, the inverting input terminal of which is grounded, and the output terminal of which is connected to the collector of the first transistor Q1;
a first triode Q1, the base of which is connected with the non-inverting input terminal of the first operational amplifier AR1 through a third capacitor C3, the emitter of which is connected with the anode of a second diode D2 in sequence;
a second diode D2 having a cathode connected to the cathode of a first diode D1, the anode of the first diode D1 being connected to the non-inverting input of the first operational amplifier AR 1;
a first capacitor C1, both ends of which are connected to the anode of the first diode D1 and the anode of the second diode D2, respectively;
a third triode Q3, the emitter of which is connected to the anode of the second diode D2 and the emitter of the first triode Q1, respectively, the collector of which is connected to the signal outlet terminal X2, and the base of which is connected to the emitter of the first triode Q1 and the resistor R10, respectively;
a resistor R10, one end far away from the first triode Q1 is connected with the collector of a fourth triode Q4;
a fourth triode Q4, an emitter of which is connected with the inverting input terminal of the fourth operational amplifier AR4, and a base of the fourth triode Q4 is connected with the non-inverting input terminal of the third operational amplifier AR3 through a resistor R8;
a third operational amplifier AR3, the inverting input terminal of which is grounded through a resistor R4, the output terminal of the third operational amplifier AR3 being connected to the non-inverting input terminal of the fourth operational amplifier AR 4;
a fourth operational amplifier AR4, the output terminal of which is connected to the signal output terminal;
the signal input end of the fourth capacitor C4 is further connected with a fourth capacitor C4, and the other end of the fourth capacitor C4 is further connected with the non-inverting input end of the second operational amplifier AR2 sequentially through a resistor R7, a resistor R9 and a capacitor C3;
one end of the resistor R9, which is connected to the capacitor C3, is further connected to a base of the first triode Q1 and a fifth resistor R5, the other end of the fifth resistor R5 is connected to a sixth resistor R6 and a second capacitor C2, respectively, and the other ends of the second capacitor C2 and the resistor R6 are connected to an inverting input terminal of the second operational amplifier AR 2;
a fifth capacitor C5, the signal input end is further connected with a fifth capacitor C5, the other end of the fifth capacitor C5 is connected with a resistor R2, the other end of the resistor R2 is respectively connected with the base of the second triode Q2 and the variable resistor RW1, and the variable resistor RW1 is grounded;
an emitter of the second triode Q2 is connected with one end of the resistor R7, which is connected with the resistor R9, and a collector of the second triode Q2 is grounded through a resistor R1;
an emitter of the fifth triode Q5 is connected with a collector of the second triode Q2, a base of the fifth triode Q5 is connected with a non-inverting input end of the third operational amplifier AR3 through a resistor R8, and a collector of the fifth triode Q5 is connected with an output end of the fifth operational amplifier AR 5;
the inverting input terminal of the fifth operational amplifier AR5 is connected to the collector of the fifth transistor Q5, and the non-inverting input terminal thereof is connected to the non-inverting input terminal of the fourth operational amplifier AR 4.
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| CN202010318277.4A CN111482080B (en) | 2020-04-21 | 2020-04-21 | Waste gas treatment device for high-frequency heat sealing machine |
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