CN115418648B

CN115418648B - Metal workpiece pretreatment system

Info

Publication number: CN115418648B
Application number: CN202210893248.XA
Authority: CN
Inventors: 王延开; 王建; 李好海; 刘天宇; 黄兴贺; 宫兆奎; 张慧艳
Original assignee: Qingdao Honglian Electric Appliance Co ltd
Current assignee: Qingdao Honglian Electric Appliance Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-08-04
Anticipated expiration: 2042-07-27
Also published as: CN115418648A

Abstract

The application relates to a metal workpiece pretreatment system, comprising: a reaction tank; the main heating device is used for heating the solution in the reaction tank; shielding device for shielding a reaction tank, comprising: the reel is rotatably arranged at one end of the reaction tank; one end of the roller shutter is fixed on the scroll, the roller shutter is curled and wound on the scroll, a plurality of setting keys which are sequentially arranged are fixed on one surface of the roller shutter along the length direction of the roller shutter, the plurality of setting keys limit the roller shutter to only tend to curl away from the direction of the setting keys, and the scroll rotates to push the roller shutter to move along the reaction tank to cover the reaction tank; and the driving piece is used for driving the scroll to rotate. The heating device has the effect of keeping the temperature of the solution for metal treatment in a certain time so as to reduce the energy consumption of the whole main heating device when the whole main heating device is recovered to operate.

Description

Metal workpiece pretreatment system

Technical Field

The present application relates to the field of surface treatment of metal workpieces, and in particular to a metal workpiece pretreatment system.

Background

The pretreatment of the metal, which is generally called as pretreatment of the metal surface, comprises pretreatment of a substrate such as rust removal, phosphating, rust prevention and the like, and the quality of the pretreatment of the substrate has great influence on the preparation of a coating and the use of the metal. For example, salt spray tests were performed on the same coating with and without phosphating, with the result that the corrosion protection capacity was approximately doubled. It can be seen that pretreatment such as degreasing, rust removal, rust prevention, phosphating and the like and the greasy dirt cleaning agent play a vital role in the rust prevention capability of the coating and the protection capability of the metal.

The prior pretreatment process of the metal is mainly completed by matching a workpiece with a plurality of treatment tanks pre-filled with treatment liquid. The treatment solution is prepared according to the treatment mode required to be carried out, an oil removal agent is prepared if the oil removal is carried out, an acid washing liquid is prepared if the acid washing is carried out, a phosphating solution is prepared if the phosphating is carried out, neutral water is directly adopted for water washing, then the prepared different solutions are respectively put into different treatment tanks, an operator sequentially puts the workpieces into each treatment tank according to the required surface treatment sequence and finally takes out the workpieces.

Because workers need to rest at night and the like, surface treatment operation is generally carried out in daytime, and because a large amount of energy consumption is needed when the heating device for heating the solution in a plurality of treatment tanks is maintained, the whole heating device is turned off in non-working time at night so as to save energy, but the novel problem is brought, when the workers begin working again in the morning every day, the solution in the solution tank is needed to be heated again from the beginning, the time is long, and the energy consumption is still not small, especially in colder climates such as winter, part of the solution can be frozen directly, and the working in the second day is greatly influenced.

It is therefore desirable to provide a means for maintaining the temperature of the solution in the treatment tank for a predetermined period of time to reduce the energy consumption of the overall heating apparatus during recovery.

Disclosure of Invention

In order to achieve the purpose of keeping the temperature of a solution for metal treatment within a certain time so as to reduce the energy consumption of the whole heating device when the whole heating device is recovered to operate, the application provides a metal workpiece pretreatment system.

The application provides a metal workpiece pretreatment system, adopts following technical scheme:

a metal workpiece pretreatment system, comprising:

a reaction tank;

the main heating device is used for heating the solution in the reaction tank;

shielding device for shielding a reaction tank, comprising:

the reel is rotatably arranged at one end of the reaction tank;

one end of the roller shutter is fixed on the scroll, the roller shutter is curled and wound on the scroll, a plurality of setting keys which are sequentially arranged are fixed on one surface of the roller shutter along the length direction of the roller shutter, the plurality of setting keys limit the roller shutter to only tend to curl away from the direction of the setting keys, and the scroll rotates to push the roller shutter to move along the reaction tank to cover the reaction tank;

and the driving piece is used for driving the scroll to rotate.

Through adopting above-mentioned technical scheme, at normal working phase, drive the spool through the driving piece and rotate, can carry out the rolling with the roller shutter, thereby with the one end of roller shutter rolling to the reaction tank, solution heating in to the reaction tank through main heating device, can throw into the reaction tank with the work piece in handle, after ending the work, close main heating device, drive the spool through the driving piece again and reverse, can promote the roller shutter of winding in the spool and expand gradually, in the expansion process of roller shutter, the setting key on a surface will butt each other, form the stereoplasm support along the expansion direction of roller shutter, on the one hand restriction roller shutter can not upwards kick-backs, on the other hand support the roller shutter can not squint, make the roller shutter can shelter from the upside of reaction tank, thereby reduce the heat spill of reaction tank, reach the effect of reaction tank heat preservation, energy consumption when the whole recovery operation of main heating device is reduced.

Optionally, the metal workpiece pretreatment system further comprises a secondary heating device, comprising:

the first electric heating element is rotatably arranged at one end of the reaction tank, which is away from the scroll;

the traction piece is arranged between the first electric heating piece and the roller shutter, and is wound to one end of the reaction tank along with the roller shutter, and the traction piece can drive the first electric heating piece to swing to be separated from the solution; the traction piece can drive the first electric heating piece to swing to insert the solution along with the rolling curtain.

Through adopting above-mentioned technical scheme, at normal working phase, the rolling screen rolling reaches the one end of reaction tank, at this moment, the traction element will drive first electric heating element swing to break away from the solution pond, main heating device heats the reaction tank this moment, guarantee the normal operating temperature of solution in the reaction tank, when finishing work back, the rolling screen is expanded and is shielded the reaction tank, unreel gradually along with the rolling screen, the traction element loses the traction force to first electric heating element, the oscillating axle will drive in the solution of first electric heating element inserts the reaction tank, thereby can carry out low temperature heating to the solution, so, through rolling screen and first electric heating element, make the solution in the reaction tank keep slightly below the temperature of normal work, in order to reduce the energy consumption when recovering main part heating device during operation during normal work.

Optionally, the secondary heating apparatus includes:

the second electric heating element is rotatably arranged at one end of the reaction tank near the reel;

the traction piece is arranged between the second electric heating piece and the scroll and drives the rolling curtain to roll along with the scroll, and the traction piece is wound on the scroll and drives the second electric heating piece to separate from the solution; the roller shutter is driven to be unfolded along with the roller shaft, and the traction piece drives the second electric heating piece to be inserted into the solution.

Through adopting above-mentioned technical scheme, through the tractive spare that adopts, can rotate at the spool and drive the in-process that the roller shutter was expanded, winding rolling in the tractive spare of spool will synchronous unreel to make second electric heating element swing to insert in the solution, heat preservation to the solution, and when the spool drive the in-process of roller shutter rolling, the tractive spare will wind in the spool along with the rotation synchronization winding of spool, thereby makes second electric heating element swing to break away from the solution.

Optionally, a controller is arranged at one end of the reaction tank, which is away from the scroll, and is used for supplying power to the first electric heating element;

the controller is provided with control switch near one side of rolling up the curtain, along with rolling up the curtain and expanding to shelter from the reaction tank, roll up the curtain can support press in control switch, so that the controller is to first electric heat spare power supply.

Through adopting above-mentioned technical scheme, when the curtain is rolled up to the expansion and is covered the reaction tank, the curtain will support simultaneously and press in control switch to reach through the controller to first electric heat spare automatic control power supply, when the curtain rolling, the curtain breaks away from control switch's support and presses, and the controller also will break off the power supply to first electric heat spare, so, realizes not needing the power supply and the outage that control can realize first electric heat spare in addition.

a circuit breaking groove is formed on one side, close to the roller shutter, of the controller and is used for cutting off the power supply of the first electric heating element;

the roller shutter is fixed with a conductor block which can be inserted into the breaking groove along with the roller shutter to be unfolded to the shielding reaction tank, so that the controller supplies power to the first electric heating element.

Through adopting above-mentioned technical scheme, when the unwinding roller shutter shelter from the reaction tank, the conductor piece will be along with the unwinding of roller shutter inserts the broken circuit inslot in step, realizes breaking circuit inslot switching on to realize the controller and supply power to first electric heating element, when the rolling roller shutter, the conductor piece is along with the synchronous action of roller shutter, breaks away from the broken circuit inslot, thereby realizes that the controller stops supplying power to first electric heating element, so, realizes not needing the power supply and the outage that can realize first electric heating element of additional control.

Optionally, the roller shutter is filled with an electric heating wire, the electric heating wire is electrically connected to the conductor block, the electric heating wire is inserted into the breaking groove along with the conductor block, and the controller can supply power to the electric heating wire.

Through adopting above-mentioned technical scheme, the roll up curtain intussuseption that sets up has the heating wire, is rolling up the curtain and is expanded to the coworkers that shelter from the reaction tank, and the conductor piece inserts the broken circuit inslot, realizes the controller and supplies power to the heating wire to make the roll up curtain form the heat preservation that has certain temperature cut off, when can effectively reducing external temperature too low, the reaction tank receives external temperature to influence and leads to heat to scatter and disappear fast, and after the roll up curtain rolling, the conductor piece can break away from the broken circuit inslot along with the roll up curtain is synchronous, thereby stops the power supply to the heating wire.

Optionally, the two opposite sides of the reaction tank are provided with air extraction boxes along the length direction of the reaction tank and are used for connecting air extraction equipment;

a plurality of air extraction holes are formed on two opposite sides of the air extraction box.

Through adopting above-mentioned technical scheme, set up the exhaust-gas tank that has the gas vent, be located the relative both sides of reaction tank, can be at the during operation, take out from steam, smell etc. that produce because of the heating solution to guarantee the operational environment of work area.

Optionally, the main heating device comprises:

a steam generator;

the tetrafluoro heat exchanger is arranged in the reaction tank, and the air inlet end of the tetrafluoro heat exchanger is connected with the steam generator;

and the steam recoverer is connected between the air outlet end of the tetrafluoro heat exchanger and the steam generator.

Through adopting above-mentioned technical scheme, during operation, in the steam that the steam generator generated sent into the tetrafluoro heat exchanger, can carry out the overall heating to the solution in the reaction tank, and send out the steam of tetrafluoro heat exchanger again will be retrieved through the steam recovery ware, send to the steam generator again and continue to produce steam at last, so can constitute the heating cycle of whole main heating device and reaction tank.

Optionally, the reaction tank is provided with a plurality of, the main heating device further includes:

a connection pipe connected between the steam generator and the steam recoverer;

the control valve is arranged at the position of the connecting pipe corresponding to the tetrafluoro heat exchanger of each reaction tank and is used for controlling whether the steam in the connecting pipe flows through the tetrafluoro heat exchanger corresponding to the control valve.

Through adopting above-mentioned technical scheme, during operation, can be according to whether need to the heating of solution in the reaction tank, the regulating valve to satisfy the demand of heating different reaction tanks.

Optionally, the control valve includes:

the valve body is connected between the connecting pipe and the air inlet end and the air outlet end of the tetrafluoro heat exchanger;

the valve core is rotationally arranged in the valve body, and the valve core is internally formed with:

the first channel is used for being connected with the connecting pipe, and a one-way valve is arranged in the first channel and used for limiting steam to flow through the first channel in a one-way;

and the two second channels are communicated with one side of the first channel, and are respectively connected with the air inlet end and the air outlet end of the tetrafluoro heat exchanger when the check valve rotates along with the valve core to prevent steam from flowing through the first channel.

Through adopting above-mentioned technical scheme, rotate case to first passageway intercommunication connecting pipe, and make the check valve be in openable state, at this moment, the steam of letting in the connecting pipe will directly flow through first passageway fast and not get into the tetrafluoro heat exchanger, promptly do not heat the reaction tank that the control valve corresponds, then rotate the case 180 degrees, make first passageway intercommunication connecting pipe again, but the check valve is in openable state this moment, and simultaneously, two second passageways will communicate with the inlet end and the outlet end of tetrafluoro heat exchanger, at this moment, let in steam in the connecting pipe, will flow to the inlet end of tetrafluoro heat exchanger through first passageway and a second passageway directly, then steam passes through the connecting pipe through another second passageway of tetrafluoro heat exchanger again, so realize that steam flows through the tetrafluoro heat exchanger that the control valve corresponds, reach the heating to the solution in the reaction tank that the control valve corresponds.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the normal working stage, the driving piece drives the scroll to rotate, the roller shutter can be rolled up, so that the roller shutter is rolled up to one end of the reaction tank, the solution in the reaction tank is heated by the main heating device, a workpiece can be put into the reaction tank for treatment, after the work is finished, the main heating device is closed, the scroll is driven to rotate reversely by the driving piece again, the roller shutter wound on the scroll can be pushed to be gradually unfolded, in the unfolding process of the roller shutter, setting keys on one surface of the roller shutter are mutually abutted, a hard support is formed along the unfolding direction of the roller shutter, on one hand, the roller shutter is limited not to be bent upwards, on the other hand, the support roller shutter is not deviated, so that the roller shutter can cover the upper side of the reaction tank, the heat overflow of the reaction tank is reduced, the heat preservation effect of the reaction tank is achieved, and the energy consumption of the main heating device in the whole recovery operation is reduced;

2. in the normal working stage, the rolling curtain is rolled to one end of the reaction tank, at the moment, the traction piece drives the first electric heating piece to swing to be separated from the solution tank, at the moment, the main heating device heats the reaction tank to ensure the normal working temperature of the solution in the reaction tank, when the rolling curtain is unfolded to cover the reaction tank after the working is finished, the rolling curtain is gradually unrolled along with the rolling curtain, the traction piece loses traction force on the first electric heating piece, and the swinging shaft drives the first electric heating piece to be inserted into the solution in the reaction tank, so that the solution can be heated at low temperature, and therefore, the temperature of the solution in the reaction tank can be kept slightly lower than the normal working temperature through the rolling curtain and the first electric heating piece, so that the energy consumption of the main heating device is reduced when the main heating device is restored to work in normal working;

3. through the tractive spare that adopts, can be at the reel rotation drive the in-process that the roller shutter was expanded, the winding takes up the tractive spare of rolling in the reel and will be synchronous unreel to make second electric heating element swing to insert in the solution, heat the heat preservation to the solution, and when the reel drive the in-process of rolling up the roller shutter, the tractive spare will take up in the reel along with the rotation synchronous winding of reel, thereby makes second electric heating element swing to break away from the solution.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a metal workpiece pretreatment system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a reaction tank of a pretreatment system for metal workpieces according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the internal structure of a control valve of a metal workpiece pretreatment system according to an embodiment of the present application;

FIG. 4 is a schematic view of a secondary heating apparatus of a metal workpiece pretreatment system according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a controller configuration of a metal workpiece pretreatment system according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a control switch structure of a controller of a metal workpiece pretreatment system according to an embodiment of the present application;

fig. 7 is a schematic diagram of a circuit breaker tank structure of a controller of a metal workpiece pretreatment system according to an embodiment of the application.

Reference numerals illustrate: 1. a reaction tank; 11. an exhaust box; 111. an air suction hole; 12. a collection box; 13. a guide rail; 131. a track groove; 2. a main heating device; 21. a steam generator; 22. a connecting pipe; 23. a tetrafluoro heat exchanger; 24. a steam recoverer; 25. a control valve; 251. a valve body; 252. a valve core; 253. a first channel; 254. a one-way valve; 255. a second channel; 3. a shielding device; 31. a support frame; 32. a reel; 33. a roller shutter; 331. shaping the bond; 332. heating wires; 333. a conductor block; 34. a driving member; 35. a traction member; 36. a pulling member; 4. a secondary heating device; 41. a first support shaft; 42. a first electric heating rod; 43. a second support shaft; 44. a second electric heating rod; 5. a controller; 51. a control switch; 52. a breaking groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

The embodiment of the application discloses a metal workpiece pretreatment system.

Referring to fig. 1, a pretreatment system for metal workpieces comprises a reaction tank 1, a main heating device 2, a shielding device 3 and a secondary heating device 4.

The reaction tank 1 is used for storing reaction solution such as degreasing solution, pickling solution, phosphating solution, neutralization solution, pure water and the like, the type of the reaction solution can be selected according to the process requirement, and the number of the reaction tanks 1 can also be determined according to the process steps required by a user.

The main heating device 2 is used for heating the solution in the selected reaction tank 1 at high temperature during working so as to ensure that the processing process of the workpiece is completed. The shielding device 3 is used for shielding the upper side of the reaction tank 1 in the non-working state of the reaction tank 1 after the main heating device 2 is closed, so that the heat dissipation of the reaction tank 1 is reduced, the heat preservation effect of the reaction tank 1 is achieved, the energy consumption for reheating the solution when the main heating device 2 is opened again is reduced, and the heating time is saved.

The auxiliary heating device 4 heats the solution in the reaction tank 1 at low temperature after the reaction tank 1 is shielded by the shielding device 3, so that the heat preservation effect of the reaction tank 1 is further achieved, and the condition that the temperature of the solution in the reaction tank 1 is too low or is frozen when the external temperature is too low is avoided.

The following further details:

referring to fig. 2, the reaction tank 1 is rectangular in shape, and the inner wall of the reaction tank can be coated with an anti-corrosion and anti-leakage coating according to requirements. The top both sides of reaction tank 1 all are fixed with the exhaust-gas tank 11, and the length direction setting of reaction tank 1 is followed to the exhaust-gas tank 11, and the close side of two exhaust-gas tanks 11 all has a plurality of extraction openings along its length direction shaping, and the one end of reaction tank 1 is fixed with and gathers case 12, and the one end of exhaust-gas tank 11 all communicates with gathering case 12, gathers case 12 and is used for connecting external air extraction device and exhaust treatment device. When the device works, the collecting box 12 is connected with an external air extracting device and a waste treatment device and runs, and steam and peculiar smell generated by heating the reaction tank 1 can be extracted and treated through the extraction openings on the near sides of the two extraction boxes 11, so that the safety of the working environment of a working area is ensured.

Referring to fig. 1, the main heating device 2 includes a steam generating device, a connection pipe 22, a tetrafluoro heat exchanger 23, and a steam recoverer 24. The steam generating device is used for generating steam, two ends of the connecting pipe 22 are connected with the steam generating device and the steam recoverer 24, the middle part of the connecting pipe 22 is connected with the tetrafluoro heat exchanger 23, the connecting pipe is used for sending the steam to the tetrafluoro heat exchanger 23 and recovering the steam in the tetrafluoro heat exchanger 23 to the steam recoverer 24, the tetrafluoro heat exchanger 23 is arranged in the corresponding reaction tank 1, the quantity of the tetrafluoro heat exchangers can also be determined according to the quantity of the reaction tanks 1 needing to be heated, and the servo heat exchanger is used for heating the solution in the reaction tank 1. The steam recoverer 24 is connected between the connection pipe 22 and the steam generator, and recovers and sends the steam discharged from the tetrafluoro heat exchanger 23 to the steam generator, thereby forming a steam cycle, achieving the effect of circularly heating the solution in the reaction tank 1 and keeping the solution in the reaction tank 1 at a high temperature all the time.

Referring to fig. 1, in addition, in order to facilitate the user to select different reaction tanks 1 for heating according to the needs, a control valve 25 may be further provided in another embodiment of the present application, for controlling whether the steam in the connection pipe 22 flows through the tetrafluoro heat exchanger 23 corresponding to the control valve 25, which will be described in further detail below.

Referring to fig. 3, the control valve 25 is disposed at a position of the connection pipe 22 corresponding to each of the tetrafluoroheat exchangers 23, the control valve 25 includes a valve body 251 and a valve body 252, a cavity is formed inside the valve body 251, and opposite sides of the valve body 251 are connected to the connection pipe 22 so that steam can flow from the connection pipe 22 into the cavity of the valve body 251. The other side of the valve body 251 is also connected to an inlet end and an outlet end of the tetrafluoro heat exchanger 23, respectively, so that steam can flow from the valve body 251 into the tetrafluoro heat exchanger 23 or steam in the tetrafluoro heat exchanger 23 can flow into the valve body 251.

Referring to fig. 3, the cavity of the valve body 251 is disc-shaped, the size and shape of the valve core 252 and the cavity are the same, the valve core 252 is coaxially and rotatably disposed in the valve body 251, a first channel 253 is formed in the middle of the valve core 252, the first channel 253 can be communicated with the connecting pipes 22 on two opposite sides of the valve body 251 by rotating the valve core 252, and a one-way valve 254 is disposed in the middle of the first channel 253, so that steam can flow through the first channel 253 and be converted into steam which cannot flow through the first channel 253 by rotating the valve core 252 at 180 degrees. Two second channels 255 are further formed in the valve core 252, one ends of the two second channels 255 are communicated with the first channel 253, and communication ends of the two second channels 255 and the first channel 253 are respectively arranged on two sides of the one-way valve 254 of the first channel 253. When the valve core 252 to the check valve 254 are rotated to prevent steam from flowing through the first channel 253, the two second channels 255 are respectively connected with the air inlet end and the air outlet end of the tetrafluoro heat exchanger 23, and when the valve core 252 to the check valve 254 are rotated 180 degrees to enable steam to flow through the first channel 253, the two second channels 255 are not connected with the air inlet end and the air outlet end of the tetrafluoro heat exchanger 23.

Referring to fig. 1 and 3, in this way, by adopting the above scheme, the valve core 252 is turned to connect the first channel 253 to the connecting pipe 22, and the check valve 254 is in an openable state, at this time, the steam introduced into the connecting pipe 22 will flow through the first channel 253 quickly and not enter the tetrafluoro heat exchanger 23, that is, the reaction tank 1 corresponding to the control valve 25 is not heated, then the valve core 252 is turned for 180 degrees, and the first channel 253 is again connected to the connecting pipe 22, at this time, the check valve 254 is in an unopened state, and at the same time, the two second channels 255 are connected to the air inlet end and the air outlet end of the tetrafluoro heat exchanger 23, at this time, the steam is introduced into the connecting pipe 22, and will flow through the first channel 253 and one second channel 255 to the air inlet end of the tetrafluoro heat exchanger 23, and then the steam flows through the connecting pipe 22 through the other second channel 255 of the tetrafluoro heat exchanger 23, so that the steam flows through the tetrafluoro heat exchanger 23 corresponding to the control valve 25, thereby heating the solution in the reaction tank 1 corresponding to the control valve 25 is achieved.

Referring to fig. 2 and 4, the shielding device 3 includes a support frame 31, a reel 32, and a rolling shutter 33.

The two support frames 31 are arranged, the two support frames 31 are arranged on two sides of the same end of the reaction tank 1 along the width direction of the reaction tank 1, and the support frames 31 are vertically and slidably connected above the reaction tank 1. The reel 32 is disposed between the two supporting frames 31 along the width direction of the reaction tank 1, and two ends of the reel 32 are respectively rotatably connected to the two supporting frames 31.

Referring to fig. 4, the width of the rolling shutter 33 is greater than that of the reaction tank 1, one end of the rolling shutter 33 is fixed to the rolling shaft 32, and the rolling shutter 33 is wound around the rolling shaft 32 in a curled state. The outer surface of the roller shutter 33, that is, a surface of the roller shutter 33 facing downward after being unfolded, is fixed with a plurality of setting keys 331 sequentially arranged along the length direction of the roller shutter 33, the setting keys 331 are made of hard materials, and the plurality of setting keys 331 can limit the roller shutter 33 to only tend to curl away from the direction of the setting keys 331.

Referring to fig. 4, in order to facilitate the movement of the roller shutter 33 when being unfolded, guide rails 13 are arranged on both sides above the heating tank along the length direction of the roller shutter 33, rail grooves 131 are formed on the adjacent sides of the two guide rails 13, both sides of the roller shutter 33 are positioned in the rail grooves 131, and when the roller shaft 32 rotates, the roller shutter 33 can be pushed to be unfolded along the two guide rails 13 until the upper side of the reaction tank 1 is covered.

Referring to fig. 4, a driving member 34 capable of driving the spool 32 to rotate reciprocally is further disposed on a supporting frame 31, and in this embodiment, the driving member 34 adopts a reciprocating motor, but not limited to the reciprocating motor, and the driving member capable of driving the spool 32 to rotate reciprocally may be referred to as the driving member 34.

Referring to fig. 4, in a normal operation stage, the roller 32 is driven to rotate by the driving member 34, so that the roller shutter 33 can be wound up, and the roller shutter 33 is wound up to one end of the reaction tank 1, and in the winding process, the roller 32 drives the supporting member to rise along with the thickness increase of the roller shutter 33 wound on the roller 32, so as to achieve the winding up of the roller shutter 33. Then through main heating device 2 to the solution heating in the reaction tank 1, can throw into the reaction tank 1 with the work piece in, after the work is finished, close main heating device 2, drive spool 32 through driving piece 34 again and reverse, can promote the curtain 33 of winding in spool 32 and unwind gradually, on the one hand, spool 32 unreels, the thickness of curtain 33 descends on the spool 32, support piece will descend, avoid spool 32 to unreel the back, curtain 33 is close to the spool 32 one end and reaction tank 1 between produce the space, in addition in the expansion process of curtain 33, the setting key 331 of curtain 33 one surface will butt each other, form the stereoplasm support along the unwinding direction of curtain 33, on the one hand restriction curtain 33 can not upwards kick-back, on the other hand support curtain 33 can not squint, make curtain 33 can fully shelter from the upside of reaction tank 1, thereby reduce the heat of reaction tank 1 and spill out, reach the effect of reaction tank 1 heat preservation, energy consumption when the whole recovery operation of main heating device 2.

The auxiliary heating device 4 comprises a first electric heating element and a second electric heating element, and is used for carrying out auxiliary heating on the solution in the reaction tank 1 when the main heating device 2 stops heating the solution in the reaction tank 1.

Referring to fig. 4, the first electric heating member includes a first support shaft 41 and a first electric heating rod 42, the first support shaft 41 is rotatably connected to one end of the reaction tank 1 facing away from the reel 32 in the width direction of the reaction tank 1, and the first electric heating rod 42 is fixed to the first support shaft 41. A traction member 35 is fixed between the first supporting shaft 41 and the roller shutter 33, the traction member 35 adopts a soft rope body structure, such as a steel wire rope, one end of the traction member 35 is fixed on the first supporting shaft 41, and the other end is fixed on the tail end of the roller shutter 33. The roller shutter 33 is driven by the roller shaft 32 to be wound to one end of the reaction tank 1, and the traction piece 35 can drive the first supporting shaft 41 to rotate, so that the first electric heating rod 42 is driven to swing upwards to be separated from the solution; as the roller 32 drives the roller shutter 33 to unwind, the traction member 35 drives the first supporting shaft 41 to reversely rotate, so as to drive the first electric heating rod 42 to swing downwards into the insertion solution.

Referring to fig. 4, in this way, in the normal working stage, the roller shutter 33 is wound up to one end of the reaction tank 1, at this time, the traction member 35 will drive the first electric heating member to swing to be separated from the solution tank, at this time, the main heating device 2 heats the reaction tank 1, so as to ensure the normal working temperature of the solution in the reaction tank 1, when the work is finished, the roller shutter 33 is unfolded to cover the reaction tank 1, and meanwhile, the traction member 35 gradually unwinds along with the roller shutter 33, so that the traction member 35 loses traction force on the first electric heating member, the swing shaft will drive the first electric heating member to be inserted into the solution in the reaction tank 1, thereby heating the solution at a low temperature, so that the solution in the reaction tank 1 can be kept at a temperature slightly lower than the normal working temperature through the roller shutter 33 and the first electric heating member, so as to reduce the energy consumption when the main heating device 2 is recovered in the normal working.

Referring to fig. 4, the second electric heating member includes a second support shaft 43 and a second electric heating rod 44, the second support shaft 43 is rotatably connected to one end of the reaction tank 1 near the reel 32 in the width direction of the reaction tank 1, and the second electric heating rod 44 is fixed to the second support shaft 43. A pulling member 36 is disposed between the reel 32 and the second supporting shaft 43, and the pulling member 36 is a soft rope structure, such as a steel wire rope. One end of the traction piece 36 is fixed on the scroll 32, the other end of the traction piece 36 is fixed on the second supporting shaft 43, the traction piece 36 is wound on the scroll 32 along with the driving shaft to drive the rolling curtain 33 to roll up, and the second electric heating rod 44 is driven to be upwards separated from the solution in the reaction tank 1; the driving shaft drives the rolling curtain 33 to be unfolded, and the traction piece 36 drives the second electric heating rod 44 to swing downwards into the solution inserted into the reaction tank 1.

Referring to fig. 4, in this way, in the process that the driving shaft rotates to drive the roller shutter 33 to unwind, the pulling member 36 wound around the driving shaft will synchronously unwind, so that the second electric heating member swings into the insertion solution to heat and preserve heat of the solution, and in the process that the driving shaft drives the roller shutter 33 to wind around the driving shaft, the pulling member 36 will synchronously wind around the driving shaft along with the rotation of the driving shaft, so that the second electric heating member swings to be separated from the solution.

In order to facilitate the on-off control of the first electric heating element and the second electric heating element. A controller 5 may also be provided in another embodiment of the present application, as described in detail below.

Referring to fig. 4 and 5, the controller 5 is fixed to one end of the reaction tank 1 facing away from the reel 32, the controller 5 is connected to the first electric heating rod 42 of the first electric heating member and the second electric heating rod 44 of the second electric heating member, and the controller 5 is provided with a power interface for connecting with a power source. The controller 5 is also provided with a control switch 51, the control switch 51 adopts a point-operated switch, namely, the control switch 51 is pressed, the controller 5 is used for electrifying the first electric heating element and the second electric heating element, the first electric heating rod 42 and the second electric heating rod 44 are heated, the control switch 51 is separated from being pressed, the controller 5 is used for powering off the first electric heating element and the second electric heating element, and the first electric heating rod 42 and the second electric heating rod 44 are not heated any more.

Referring to fig. 4 and 5, the control switch 51 is disposed at a position corresponding to the setting key 331 at the end of the unwinding path of the roller shutter 33, that is, as the roller shutter 33 is unwound to the shielding reaction tank 1, the setting key 331 at the end of the roller shutter 33 can be pressed against the control switch 51, so that the controller 5 supplies power to the first electric heating element.

Thus, when the roller shutter 33 is unfolded to cover the reaction tank 1, the roller shutter 33 is simultaneously pressed against the control switch 51, so that the first electric heating element and the second heating element can be automatically controlled to be supplied by the controller 5, when the roller shutter 33 is wound, the roller shutter 33 is separated from the pressing of the control switch 51, and the controller 5 is also used for disconnecting the supply of the power to the first electric heating element and the second electric heating element, so that the supply and the disconnection of the power to the first electric heating element and the second electric heating element can be realized without additional control.

In addition, in order to further improve the heat insulation effect of the roller shutter 33, the roller shutter 33 may be filled with the heating wire 332, and in order to achieve the power on/off control of the heating wire 332 in the roller shutter 33, another embodiment of the present application further provides a control manner of the controller 5, which is described in the following specific description:

referring to fig. 5 and 6, the controller 5 is fixed at one end of the reaction tank 1 facing away from the reel 32, the controller 5 is connected to the first electric heating rod 42 of the first electric heating element and the second electric heating rod 44 of the second electric heating element, and the controller 5 is provided with a breaking groove 52, that is, the first electric heating rod 42 and the second electric heating rod 44 cannot be electrified through the arrangement of the breaking groove 52, more specifically, a control circuit is arranged in the controller 5, the control circuit is provided with a connector for connecting a power supply, the first electric heating rod 42 and the second electric heating rod 44 are electrically connected to the control circuit in a parallel or serial mode, and the control circuit forms two unconnected connectors at the position of the breaking groove 52, so that even if the power supply is switched on, the control circuit still cannot be conducted, and the first electric heating rod 42 and the second electric heating rod 44 cannot heat up.

Referring to fig. 5 and 6, a conductive block 333 is fixed at a position of the end of the roller shutter 33 corresponding to the setting key 331, a middle part of the conductive block 333 in a length direction is provided as an insulating part, two ends of the conductive block are conductive parts, two ends of an electric heating wire 332 in the roller shutter 33 are respectively connected to two conductive parts of the conductive block 333, the conductive block 333 is made of conductive materials such as copper, aluminum and iron, the conductive block 333 can be unfolded to the shielding reaction tank 1 along with the roller shutter 33, the conductive block 333 at the end of the roller shutter 33 can be inserted into the circuit breaking groove 52, so that a control circuit inside the roller shutter is controlled to be communicated, specifically, the conductive block 333 communicates control circuit joints at two ends of the circuit breaking groove 52, so that the controller 5 can simultaneously electrify the first electric heating rod 42, the second electric heating rod 44 and the heating wire.

Referring to fig. 5 and 6, when the roller shutter 33 is unfolded to cover the reaction tank 1, the conductor block 333 is synchronously inserted into the breaking groove 52 along with the unfolding of the roller shutter 33, so that the breaking groove 52 is conducted, and thus, the controller 5 supplies power to the first electric heating element, the second electric heating element and the heating wire 332, and when the roller shutter 33 is rolled, the conductor block 333 synchronously acts along with the roller shutter 33 and is separated from the breaking groove 52, so that the controller 5 stops supplying power to the first electric heating element, the second electric heating element and the heating wire 332, and thus, the power supply and the power interruption of the first electric heating element, the second electric heating element and the heating wire 332 can be realized without additional control.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A metal workpiece pretreatment system, comprising:

a reaction tank (1);

the main heating device (2) is used for heating the solution in the reaction tank (1);

shielding device (3) for shielding a reaction tank (1), comprising:

the reel (32) is rotatably arranged at one end of the reaction tank (1);

a roller shutter (33), one end of which is fixed on a reel (32), the roller shutter (33) is curled and wound on the reel (32), a plurality of setting keys (331) which are sequentially arranged are fixed on one surface of the roller shutter (33) along the length direction of the roller shutter, the plurality of setting keys (331) limit the roller shutter (33) to only curl towards the direction deviating from the setting keys (331), and the reel (32) rotates to push the roller shutter (33) to move along the reaction tank (1) to cover the reaction tank (1);

-a driving member (34) for driving the rotation of the reel (32), further comprising a secondary heating device (4), comprising:

the first electric heating element is rotatably arranged at one end of the reaction tank (1) away from the scroll (32);

the traction piece (35) is arranged between the first electric heating piece and the rolling curtain (33), and is rolled up to one end of the reaction tank (1) along with the rolling curtain (33), and the traction piece (35) can drive the first electric heating piece to swing to be separated from the solution; the traction piece (35) can drive the first electric heating piece to swing to insert the solution along with the unfolding of the rolling curtain (33).

2. A metal workpiece pretreatment system as recited in claim 1, wherein said secondary heating means comprises:

the second electric heating element is rotatably arranged at one end of the reaction tank (1) close to the reel (32);

the traction piece (36) is arranged between the second electric heating piece and the scroll (32), and drives the rolling curtain (33) to roll along with the scroll (32), and the traction piece (36) is wound on the scroll (32) and drives the second electric heating piece to be separated from the solution; the roller shutter (33) is driven to be unfolded along with the roller shaft (32), and the traction piece (36) drives the second electric heating piece to be inserted into the solution.

3. A metal workpiece pretreatment system as recited in claim 1, wherein: one end of the reaction tank (1) deviating from the scroll (32) is provided with a controller (5) for supplying power to the first electric heating element;

one side of the controller (5) close to the roller shutter (33) is provided with a control switch (51), the roller shutter (33) can be pressed against the control switch (51) along with the roller shutter (33) unfolding to the shielding reaction tank (1), and the controller (5) supplies power to the first electric heating element.

4. A metal workpiece pretreatment system as recited in claim 1, wherein: one end of the reaction tank (1) deviating from the scroll (32) is provided with a controller (5) for supplying power to the first electric heating element;

a breaking groove (52) is formed on one side of the controller (5) close to the roller shutter (33) and is used for cutting off the power supply of the first electric heating element;

the roller shutter (33) is fixedly provided with a conductor block (333), and the conductor block (333) can be inserted into the breaking groove (52) along with the roller shutter (33) being unfolded to the shielding reaction tank (1), so that the controller (5) supplies power to the first electric heating element.

5. A metal workpiece pretreatment system as recited in claim 4, wherein: the roller shutter (33) is internally filled with an electric heating wire (332), the electric heating wire (332) is electrically connected to the conductor block (333), the electric heating wire (332) can be powered by the controller (5) along with the conductor block (333) being inserted into the breaking groove (52).

6. A metal workpiece pretreatment system as recited in claim 1, wherein: the two opposite sides of the reaction tank (1) are provided with an extraction box (11) along the length direction of the reaction tank for connecting with an extraction device;

a plurality of air suction holes (111) are formed on two opposite sides of the air suction box (11).

7. A metal workpiece pretreatment system as recited in claim 1, wherein: the main heating device (2) comprises:

a steam generator (21);

the tetrafluoro heat exchanger (23) is arranged in the reaction tank (1), and the air inlet end of the tetrafluoro heat exchanger (23) is connected with the steam generator (21);

and the steam recoverer (24) is connected between the air outlet end of the tetrafluoro heat exchanger (23) and the steam generator (21).

8. A metal workpiece pretreatment system as recited in claim 7, wherein: the reaction tank (1) is provided with a plurality of, the main heating device (2) further includes:

a connection pipe (22) connected between the steam generator (21) and the steam recoverer;

and a control valve (25) which is arranged at a position of the connecting pipe (22) corresponding to the tetrafluoro heat exchanger (23) of each reaction tank (1) and is used for controlling whether the steam in the connecting pipe (22) flows through the tetrafluoro heat exchanger (23) corresponding to the control valve (25).

9. A metal workpiece pretreatment system as recited in claim 8, wherein: the control valve (25) comprises:

the valve body (251) is connected between the connecting pipe (22) and the air inlet end and the air outlet end of the tetrafluoro heat exchanger (23);

a valve core (252) rotatably arranged in the valve body (251), wherein the valve core (252) is internally molded with:

a first channel (253) for connecting with the connecting pipe (22), wherein a one-way valve (254) is arranged in the first channel (253) for limiting the steam to flow through the first channel (253) in one direction;

and the two second channels (255) are communicated with one side of the first channel (253), and when the valve core (252) rotates to the check valve (254) to prevent steam from flowing through the first channel (253), the two second channels (255) are respectively connected with the air inlet end and the air outlet end of the tetrafluoro heat exchanger (23).