CN205761999U - The hardware surface processing device of environmental protection - Google Patents

Abstract

The utility model discloses the hardware surface processing device of a kind of environmental protection, it is characterized in that, including cleaning case, drying baker, paint box and the connecting gear for conveying work pieces, described connecting gear includes the workpiece fixed cell that conveyer belt is connected, the driver element driving described conveyer belt with described conveyer belt, described workpiece fixed cell is provided with lifting unit and rotary unit, and described cleaning case, drying baker and paint box are all located at below described conveyer belt.Use the hardware surface processing device of the environmental protection of technique scheme, the every process of surface treatment that can make workpiece all completes under the most airtight process box environment, so that the issuable escaping gas of surface conditioning agent in each process box is avoided occurring excessive, to impact environment；Meanwhile, workpiece relies on connecting gear, lifting unit and rotary unit also can smoothly complete the technical process that surface processes inside process chamber.

Description

The hardware surface processing device of environmental protection

[technical field]

This utility model relates to hardware material surface and processes Technology field, particularly relates to a kind of ring The hardware surface processing device protected.

[background technology]

Hardware kinds of surface to be related to process technique, such as washing, defat, Spray paint.In prior art, surfacing process often occurs the problem that midway is interrupted, no Ensure that the integrity of process treatment process.Workpiece is abundant not in the infiltration of inorganic agent, causes workpiece May need to do over again, also have plenty of, during existing lacquer spraying technique, often occur that surface spraying is uneven Even problem, this causes trouble to the process of technical process, and also causes resource in spraying process Waste.

Hardware, during carrying out surface process, generally requires and relates to kinds of surface inorganic agent, portion Divide surface conditioning agent to there is volatility, human body and environment are done certain harm.Existing hardware table It is often open processing that face processes technique, and harmful gas intersperses among air, and it is inevitably to operation Personnel and surrounding enviroment impact.

[utility model content]

The purpose of this utility model is to provide a kind of hardware process of surface treatment device, described device Can be during surface of the work processes, it is to avoid the problem that workpiece surface spraying is uneven in painting process And the impact that the harmful gas environment to external world produced in described painting process causes.

For realizing this purpose, this utility model adopts the following technical scheme that

A kind of hardware surface processing device of environmental protection, it is characterised in that include cleaning case, drying baker, Paint box and the connecting gear for conveying work pieces, described connecting gear includes conveyer belt and described transmission Workpiece fixed cell that band connects, drive the driver element of described conveyer belt, on described workpiece fixed cell Being provided with lifting unit and rotary unit, described cleaning case, drying baker and paint box are all located at described conveyer belt Lower section.

Concrete, described drying baker includes the first drying baker, the second drying baker；Described cleaning case, spray paint Case, the first drying baker and the second drying baker are all located in process chamber, and described conveyer belt crosses in described technique In room, the described conveyer belt conveying workpieces described process chamber of turnover is easy in being respectively provided on two sides with of described process chamber Import and outlet；It is provided with described cleaning case near described import department, is provided with near described exit described Second drying baker, described first drying baker and paint box be sequentially arranged in described cleaning case and the second drying baker it Between.

Concrete, described workpiece fixed cell also includes the standing part for being connected with described conveyer belt And for loading the loading station of workpiece, described standing part, lifting unit, rotary unit, loading part Divide and be sequentially connected with.

Concrete, described cleaning case is provided with the rinse bath for cleaning workpiece.

Concrete, described first drying baker includes and makes fuel combustion and produce the fuel of heat and add hot charging Putting, described second drying baker includes and makes visible radiation produce the radiant heating device of heat.

Concrete, described paint box inwall have multiple with the equidistant spray gun for paint arranged around mode.

Further, the hardware surface processing device of described environmental protection also includes for Based Intelligent Control institute State the PLC control cabinet of connecting gear, lifting unit, rotary unit and spray gun for paint.

Further, the hardware surface processing device of described environmental protection also includes waste gas recovery case, institute Stating waste gas recovery case to be connected with described process chamber by pump-line, described pump-line is provided with air Compressor.

Concrete, described pump-line includes the connecting branch that multiple and described process chamber connects, each described Connecting branch is connected with both sides and the top of described process chamber respectively.

Concrete, described import is respectively arranged with, with bottom, the rubber extended towards with the upper end of outlet Layer, two rubber layers in same port overlap each other.

Compared with prior art, this utility model possesses following advantage:

This utility model employs rotary unit and lifting unit, in surface of the work processes technical process, Described workpiece, under the regulation and control of described PLC control cabinet, is sent into the process box specified by described lifting unit In, after the PROCESS FOR TREATMENT in described process box has worked, described lifting unit is again by described workpiece Sending process box, this process makes each process of surface treatment of described workpiece to be implemented, and protects Demonstrate,prove the integrity of PROCESS FOR TREATMENT.

Additionally, described rotary unit serves the work of apt word added to clinch the point in surfacing process really Make described workpiece obtain abluent with, its at the uniform velocity rotation in described cleaning case to infiltrate uniformly, make Spot on described surface of the work or grease more easy-clear, its at the uniform velocity rotation in described paint box makes Described workpiece can be sprayed paint uniformly in painting process, high degree solve hardware Process, at lacquered surface, uneven problem of spraying paint in technique, it is to avoid the wasting of resources, improve workpiece Painting quality.

In a kind of hardware process of surface treatment device described in the utility model, for realizing the mesh of environmental protection , have employed the scheme of many pump-lines waste gas recovery.The hardware surface processing device of described environmental protection Have waste gas recovery case, described waste gas recovery case to be connected with described process chamber by pump-line, described in take out Feed channel is provided with air compressor.Described pump-line includes multiple and described process chamber UNICOM connection Arm, each described connecting branch is connected with both sides and the top of described process chamber respectively.Described workpiece import Porch upper and lower side is provided with the rubber layer that seal highly corrosion resistant is strong so that every surface of workpiece Process technique all to complete under the most airtight process box environment, so that the surface in each process box The issuable escaping gas of inorganic agent is avoided occurring excessive, and this scheme has extracted workpiece dramatically Issuable harmful gas in surfacing process, it is to avoid surface of the work processes in technical process The unnecessary injury that operator are caused by issuable harmful gas, decreases Zhou Bianhuan simultaneously The impact in border, has reached the purpose of environmental protection.

[accompanying drawing explanation]

This utility model aspect that is above-mentioned and/or that add and advantage are from below in conjunction with the accompanying drawings to embodiment Description will be apparent from easy to understand, wherein:

Fig. 1 is the structural representation of the hardware surface processing device of a kind of environmental protection of this utility model；

Fig. 2 be a kind of environmental protection of this utility model hardware surface processing device described in process chamber Side view；

Fig. 3 is the knot exported described in the hardware surface processing device of a kind of environmental protection of this utility model Structure schematic diagram；

Reference numerals list:

1 process chamber, 2 cleaning cases, 3 rinse baths, 4 first drying bakers, 5 paint box, 6 Second drying baker, 7 conveyer belts, 8 standing parts, 9 lifting units, 10 rotary units, 11 Loading station, 12 spray guns for paint, 13 waste gas recovery casees, 14 air compressors, 15 pump-lines, 16 imports, 17 outlets, 18 rubber layers.

[detailed description of the invention]

With exemplary embodiment, this utility model is further described below in conjunction with the accompanying drawings, it should be understood that under State detailed description of the invention be merely to illustrate this utility model rather than limit scope of the present utility model.Its Label identical in middle accompanying drawing all refers to identical parts.

Additionally, if it is known that the detailed description of technology is for illustrating that feature of the present utility model is unnecessary , then omitted.It should be noted that the word "front", "rear" used in describing below, " left ", " right ", "up" and "down" refer to the direction in accompanying drawing, word " interior " and " outward " refer respectively to towards or remote Direction from particular elements geometric center.

Fig. 1 and Fig. 2 collectively illustrates the hardware surface processing device of a kind of environmental protection of the present utility model, Including cleaning case 2, drying baker, paint box 5 and the connecting gear for conveying work pieces, described conveyer Structure includes workpiece fixed cell that conveyer belt 7 is connected with described conveyer belt, drives driving of described conveyer belt Moving cell, described workpiece fixed cell is provided with lifting unit 9 and rotary unit 10, described cleaning case 2, Drying baker and paint box 5 are all located at below described conveyer belt 7.

Described conveyer belt 7 is made up of two conveyer chains, and the structure of described conveyer chain is by inner link and outer link Composition, also includes inner plate, outer plate, bearing pin, sleeve, five widgets of roller.

Driver element described in the utility model refers to the power set for driving connecting gear, determines The service behaviour of connecting gear, its drive form includes: driven by power, internal combustion engine drive, fluid power with Hydraulic-driven, strength drive, manpower drives and composite flooding.This utility model has used described electric power Driving, its feature is, it is simple to realizes driving respectively, makes connecting gear simplify；Starting, speed governing, mistake Carry, rotating functional, easy to control；It is easily achieved safeguard protection and interlocking, safeguards simple；Energy Source is easy to get, pollution-free.

Concrete, described drying baker includes first drying baker the 4, second drying baker 6；Described cleaning case 2, Paint box the 5, first drying baker 4 and the second drying baker 6 are all located in process chamber 1, described conveyer belt 7 Crossing in described process chamber 1, it is defeated that being respectively provided on two sides with of described process chamber 1 is easy to described conveyer belt 7 Send import 16 and the outlet 17 of the workpiece described process chamber 1 of turnover；It is provided with described at described import 16 Cleaning case 2, is provided with described second drying baker 6 at the described outlet 17, described first drying baker 4 with Paint box 5 is sequentially arranged between described cleaning case 2 and the second drying baker 6.

Additionally, including multiple process box in described process chamber 1, described process box includes this practicality Novel described cleaning case the 2, first drying baker 4, paint box 5 and the second drying baker 6, also include Defat case, electrophoresis case, water washing chamber, plated film case etc., at described process box its described surface treatment corresponding Reason means.Such as, it is defat that the surface treatment that defat case is corresponding processes means, the most frequently used defat mode Mainly there are two kinds: alkali degreasing and electrolytic degreasing.

Concrete, described workpiece fixed cell also includes the standing part for being connected with described conveyer belt 8 and for loading the loading station 11 of workpiece, described standing part 8, lifting unit 9, rotary unit 10, loading station 11 is sequentially connected with.

The device order of connection that workpiece fixed cell described in the utility model is used can also is that fixed part Points 8, rotary unit 10, lifting unit 9, loading station 11, described loading station can be fixation clamp Son, is used for clamping workpiece, simple in construction, reliable operation.

Additionally, described loading station can be the loading station being connected with hydraulic cylinder, utilizes described liquid Hydraulic pressure that hydraulic energy is changed into mechanical energy by cylinder pressure, that do straight reciprocating motion (or oscillating motion) performs Element, described hydraulic cylinder is substantially by cylinder barrel and cylinder cap, piston and piston rod, sealing device, buffering dress Putting and form with exhaust apparatus, the pressure reduction on its power output and piston effective area and both sides thereof is directly proportional so that The surface treatment processing procedure location of workpiece is more stable, reduces surface spraying in painting process uneven Probability, improves painting quality.

Concrete, described cleaning case 2 is provided with the rinse bath 3 for cleaning workpiece.

Workpiece is entered by import 16, and the process of surface treatment first carried out is exactly cleaning, and this practicality is new The cleaning that type uses is ultrasonic cleaning technology.Workpiece is entered by import 16, and lifting unit 9 is by work Part is placed in the rinse bath 3 equipped with appropriate chemical solvent or aqueous cleaning agent, makes workpiece be fully contacted in right amount Chemical solvent or aqueous cleaning agent, the forward directed radiation of ultrasound wave density interphase in a liquid, make liquid stream Move and produce the micro-bubble of ten hundreds of a diameter of 50-500 μm, the small gas being present in liquid Bubble vibrates under the effect of sound field.These bubbles are formed at the negative pressuren zone of ultrasound wave longitudinal propagation, growth, And at zone of positive pressure, when acoustic pressure reaches certain value, bubble increases rapidly, close the most suddenly.And at gas Produce shock wave during bubble Guan Bi, producing thousands of atmospheric pressure about, destroying insoluble dirt and make him Be scattered in abluent, thus reach the purpose of cleaning workpiece, the advantage of ultrasonic cleaning technology is Effective, simple to operate, carry out afterwards washing and be dried etc. science and engineering skill.

It addition, the cleaning that this utility model uses also includes that alkaline cleaning fluid cleans, workpiece is by import 16 enter, and workpiece is placed in the rinse bath 3 equipped with alkaline cleaning fluid, makes workpiece fully connect by lifting unit 9 Touching alkaline cleaning fluid, rotary unit 10 starts, and starts rotational workpieces, makes surface of the work dirt fully dissolve In alkaline cleaning fluid, thus reach the purpose of cleaning workpiece, carry out afterwards washing and dry treatment process.

It addition, the cleaning that this utility model uses also includes the electrochemical cleaning of alkaline cleaning fluid.

Concrete, described first drying baker 4 includes and makes fuel combustion and produce the fuel of heat and add hot charging Putting, described second drying baker 6 includes and makes visible radiation produce the radiant heating device of heat.

The principle of described fuelizer application temp.-changing adsorption, adsorbs under room temperature, high water vapor partial pressure, Resolve under higher temperature, low water vapor partial pressure and regenerate, the moisture content that i.e. adsorbent adsorbs in adsorption process, Rely on the effect of the thermal diffusion mechanism of high-quality regeneration gas (dry air heating) to obtain at regenerative process Thoroughly to remove.

Described radiant heating device use drying technology include far-infrared radiation drying technology or Microwave radiation drying technology.

This utility model uses far-infrared radiation drying technology, has drying rate fast, dries matter Measured feature, compared near infrared radiation drying technology, far-infrared radiation drying technology more saves Energy.

Concrete, described paint box 5 inwall have multiple with the equidistant spray gun for paint 12 arranged around mode.

Paint box 5 described in the utility model is to make coating be atomized into tiny paint by compressed air to drip, at gas Stream sprays to coated article surface under driving, and is mainly emitted by spray, nozzle, needle-valve and spray gun for paint form, simultaneously Outside need connects pneumatic shuttle, such as pressurized tank, pressure pot, pumping etc..

Described spray gun for paint 12 includes style electro static spray gun, pressure-air spray gun for paint；Described style electro static spray gun ratio The many electrostatic generators of described pressure-air spray gun for paint, can produce positive charge or negative charge, and voltage Higher, typically there are tens more than KV, but electric current is the least；The style electro static spray gun condition when spraying is intended to Coating has certain electric conductivity, and be coated with workpiece is also conductive, competence exertion electrostatic efficiency and excellent Gesture；Style electro static spray gun uses the physical principle that there is a natural attraction between the sexes to design, therefore it is than traditional high pressure airgun Want fuel-efficient and improve coating efficiency.

Paint box 5 described in the utility model uses electrostatic painting scheme, the principle that described electrostatic painting uses It is with workpiece as anelectrode, using workpiece as plus earth under usual sight；Coating atomising device is negative Electrode, connects power supply negative high voltage, has so just led to high-voltage electrostatic field at the two poles of the earth.Send out owing to breeding at negative electrode Raw corona discharge, the paint medium that can make ejection is charged, and is atomized further.In accordance with " same sex is repelled each other, different Property attracting " principle, the most charged paint medium is by under the effect of electric field force, and workpiece is formed and encircles by coating Effect, directionally flows to the coated article outward appearance of positively charged along electric lines of force, is piled into one layer of average, attachment jail Solid thin film.

Additionally, electrostatic painting technology may be used without positive polarity corona discharge, but negative polarity corona discharge Critical voltage is low compared with positive polarity corona discharge, the most relatively stable, be difficult to breed flashing.With artificial mark spraying Paint compares that to have efficiency high, and waste is few, and quality is good, beneficially the advantage such as operator's health.

Additionally, what described paint box 5 should be noted that when carrying out lacquer spraying technique work has: spraying paint Suitable coating and suitable viscosity should be selected according to by spray workpiece during liquid；Will according to the kind of coating, Air pressure；The size of nozzle and being determined by the requirement of spray plane.

Concrete,

1. nozzle diameter is 0.5mm～1.8mm；

2. the air pressure supplying spray gun for paint is generally 0.3～0.6Mpa；

3. nozzle is typically advisable with 20～30cm with by the distance of spray plane；

4. the direction of ejection paint stream should be perpendicular to body surface as far as possible；

5. during operation the edge of each spraying band should overlap in the previous strip edge sprayed (with Overlapping 1/3 is advisable), the movement velocity of spray gun for paint should keep uniformity, can not be sometimes fast and sometimes slow.

Further, the hardware surface processing device of described environmental protection also includes for Based Intelligent Control institute State connecting gear, lifting unit 9, rotary unit 10 and the PLC control cabinet of spray gun for paint 12.

PLC control cabinet described in the utility model refers to realize the regulator cubicle of the control of motor, switch, Wherein, PLC (Programmable logic Controller) programmable logic controller (PLC), a kind of numeral The electronic system of arithmetic operation, aims at and designs in industrial environment application.Basic constitute have power supply, in Central Processing Unit, memorizer, input/output interface circuit, functional module and communication module.It uses One class programmable memory, for its internally stored program, performs logical operations, sequential control, determines Time, counting and the user oriented instruction such as arithmetical operation, and by numeral or analog pattern input/output control Various types of machineries or production process, be the core of Industry Control.PLC described in this utility model Control chamber is primarily referred to as the programmable logic controller (PLC) of digital operation electronic system, is used for controlling workpiece The production process that surface processes.

Further, the hardware surface processing device of described environmental protection also includes waste gas recovery case 13, Described waste gas recovery case 13 is connected with described process chamber 1 by pump-line 15, described pump-line 15 are provided with air compressor 14.

Described air compressor 14 is that the mechanical energy of former dynamic (typically motor) is converted into gas pressure Can device, be compressed-air actuated pressure generator, make inside the connecting branch that is connected with process chamber 1 Air pressure uprises, thus realizes extracting out the function of process chamber gas, and described air compressor 14 Constantly deliver gas to described waste gas recovery case 13, thus realize the purpose of environmental protection, the fall of high degree The low pollution to surrounding enviroment.

Additionally, the method that described waste gas recovery case 13 processes waste gas has: pressurization, absorption method, absorption Method, burning method.

Concrete, described pump-line 15 includes the connecting branch that multiple and described process chamber 1 connects, respectively Described connecting branch is connected with both sides and the top of described process chamber 1 respectively.

Described connecting branch is provided with bleeding point, high degree in the both sides of described process chamber 1 and top Expand extraction waste gas scope.

Additionally, described pump-line 15 is internal also includes corrosion-resistant finishes, issuable for preventing Corrosion to pump-line when toxic gas has corrosivity.

Refer to discharging port schematic diagram in Fig. 3 this utility model, concrete, described import 16 and outlet The upper end of 17 and bottom are respectively arranged with the rubber layer 18 extended towards, two rubbers in same port Glue-line 18 overlaps each other.

The selection standard of described rubber layer 18 and acting as:

1. electric insulation, during the electric leakage of anti-locking apparatus, impacts operating personnel；

2. weakening, reduces vibration during plant running；

The most airtight, prevent issuable toxic gas leakage in operation process.

The best wearability, high coefficient of friction and acid-alkali-corrosive-resisting, such as NBR, fluorubber Deng.

Concrete, the workflow that the hardware surface processing device of described a kind of environmental protection is concrete has:

Workpiece is loaded, by drive unit drives conveyer belt, and by workpiece by import 16 in loading station 11 It is conveyed in process chamber 1；

PLC control cabinet controls connecting gear, through rubber layer 18, stops transmitting directly over rinse bath 3, Lifting unit 9 on workpiece fixed cell starts, and is sent into by workpiece in the middle of rinse bath 3；

Workpiece immerses in alkaline cleaner, and rotary unit 10 starts, and slowly rotates, and makes alkaline cleaner fill Tap touches workpiece；

In rinse bath 3, ultrasonic transmission device starts, and starts ultrasonically cleaning workpiece；

After ultrasonic waves for cleaning completes, alkaline cleaner is replaced with clear water, carries out clean water；

After cleaning completes, workpiece, under the effect of connecting gear, enters the first drying baker 4 and carries out fuel and add Baking the affected part after applying some drugs is done；

Workpiece under the effect of connecting gear, enter paint box 5, spray gun for paint 12 spraying paint liquid, meanwhile, Rotary unit 10 makes workpiece uniformly be sprayed-on painting liquid in rotation；

After having sprayed paint, workpiece, under the effect of connecting gear, enters the second drying baker 6, far infrared Radiation appliance enables, and carries out radiative oven dry；

After workpiece cooling, under the effect of connecting gear, through rubber layer 18, by outlet 17 transmission Go out process chamber 1.

This utility model employs rotary unit and lifting unit, in surface of the work processes technical process, Described workpiece, under the regulation and control of described PLC control cabinet, is sent into the process box specified by described lifting unit 9 In, after the PROCESS FOR TREATMENT in described process box has worked, described lifting unit 9 is again by described work Part sends process box, and this process makes each process of surface treatment of described workpiece to be implemented, Ensure that the integrity of PROCESS FOR TREATMENT.

Additionally, described rotary unit 10 serves apt word added to clinch the point in surfacing process really Effect, its at the uniform velocity rotation in described cleaning case makes described workpiece obtain abluent to infiltrate uniformly, Make the spot on described surface of the work or grease more easy-clear, its at the uniform velocity rotation in described paint box Described workpiece can be sprayed paint in painting process uniformly, high degree solve five metals system Product process, at lacquered surface, uneven problem of spraying paint in technique, it is to avoid the wasting of resources, improve workpiece Painting quality.

In a kind of hardware process of surface treatment device described in the utility model, for realizing the mesh of environmental protection , have employed the scheme of many pump-lines waste gas recovery.The hardware surface processing device of described environmental protection Have waste gas recovery case, described waste gas recovery case to be connected with described process chamber by pump-line, described in take out Feed channel is provided with air compressor.Described pump-line includes multiple and described process chamber UNICOM connection Arm, each described connecting branch is connected with both sides and the top of described process chamber respectively.Described workpiece import 16 and entrance 17 at upper and lower side be provided with the strong rubber layer of seal highly corrosion resistant 18 so that workpiece Every process of surface treatment all completes under the most airtight process box environment, so that each process box In the issuable escaping gas of surface conditioning agent avoid occurring excessive, this scheme is taken out dramatically Take surface of the work and processed issuable harmful gas in technical process, it is to avoid science and engineering at surface of the work The unnecessary injury that during skill, operator are caused by issuable harmful gas, decreases simultaneously Impact on surrounding enviroment, has reached the purpose of environmental protection.

The above is only some embodiments of the present utility model, it is noted that for the art Those of ordinary skill for, on the premise of without departing from this utility model principle, it is also possible to make some Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. the hardware surface processing device of an environmental protection, it is characterized in that, including cleaning case, drying baker, paint box and the connecting gear for conveying work pieces, described connecting gear includes the workpiece fixed cell that conveyer belt is connected, the driver element driving described conveyer belt with described conveyer belt, described workpiece fixed cell is provided with lifting unit and rotary unit, and described cleaning case, drying baker and paint box are all located at below described conveyer belt.

The hardware surface processing device of environmental protection the most according to claim 1, it is characterised in that described drying baker includes the first drying baker, the second drying baker；Described cleaning case, paint box, the first drying baker and the second drying baker are all located in process chamber, and described conveyer belt crosses in described process chamber, and being respectively provided on two sides with of described process chamber is easy to described conveyer belt conveying workpieces and is passed in and out import and the outlet of described process chamber；Being provided with described cleaning case near described import department, be provided with described second drying baker near described exit, described first drying baker and paint box are sequentially arranged between described cleaning case and the second drying baker.

The hardware surface processing device of environmental protection the most according to claim 1, it is characterized in that, described workpiece fixed cell also includes the standing part for being connected with described conveyer belt and for loading the loading station of workpiece, and described standing part, lifting unit, rotary unit, loading station are sequentially connected with.

The hardware surface processing device of environmental protection the most according to claim 1, it is characterised in that be provided with the rinse bath for cleaning workpiece in described cleaning case.

The hardware surface processing device of environmental protection the most according to claim 2, it is characterized in that, described first drying baker includes and makes fuel combustion produce the fuelizer of heat, and described second drying baker includes and makes visible radiation produce the radiant heating device of heat.

The hardware surface processing device of environmental protection the most according to claim 1, it is characterised in that have multiple with the equidistant spray gun for paint arranged around mode on described paint box inwall.

The hardware surface processing device of environmental protection the most according to claim 6, it is characterised in that also include for connecting gear, lifting unit, rotary unit described in Based Intelligent Control and the PLC control cabinet of the head that sprays paint.

The hardware surface processing device of environmental protection the most according to claim 2, it is characterised in that also include waste gas recovery case, described waste gas recovery case is connected with described process chamber by pump-line, and described pump-line is provided with air compressor.

The hardware surface processing device of environmental protection the most according to claim 8, it is characterised in that described pump-line includes that the connecting branch that multiple and described process chamber connects, each described connecting branch are connected with both sides and the top of described process chamber respectively.

The hardware surface processing device of environmental protection the most according to claim 2, it is characterised in that described import is respectively arranged with, with bottom, the rubber layer extended towards with the upper end of outlet, and two rubber layers in same port overlap each other.