CN117773256A - Online grading recovery equipment and gas phase welding method - Google Patents

Abstract

The embodiment of the invention discloses on-line grading recovery equipment and a gas-phase welding method, which comprise a gas-phase welding furnace, a condensing device, a filtering device, a preheating device and a storage device, wherein the storage device is connected with a pipeline of the preheating device, the preheating device is connected with a pipeline of the gas-phase welding furnace, the gas-phase welding furnace is connected with the condensing device through a pipeline, the condensing device is connected with the filtering device through a pipeline, and the filtering device is connected with the storage device through a pipeline. Compared with the prior art, the invention has the advantages of recovery under the vacuum closed pipeline, high recovery efficiency, extremely low gas-phase liquid loss rate, greatly reduced production cost, and increased liquid filtration after recovery, so that the recovered gas-phase liquid can be completely used as a new use, and the process completely realizes on-line automatic control without manual recovery.

Description

Online grading recovery equipment and gas phase welding method

Technical Field

The invention relates to the technical field of semiconductor heating, in particular to online grading recovery equipment and a gas phase welding method.

Background

In the market, equipment heated by utilizing vaporization latent heat, especially in the field of semiconductor heating, other procedures such as gas phase heating, vacuum and cooling coexist due to strict process requirements such as welding bubble rate, oxidation, heating mode and the like, so that recovery of gas phase liquid is extremely important, otherwise, waste is great each time of production, and the pumped gas phase liquid has great damage to a vacuum pump.

In the field of gas phase heating, a heating medium is gas phase liquid, the heated gas phase liquid is converted into steam, most of equipment in the market is heated in an open mode, part of steam is liquefied after being absorbed by a cold product, part of steam overflows or is discharged outwards, so that the gas phase liquid amount is smaller and smaller along with the increase of heating times, the gas phase liquid is high in cost, and a user cannot bear high cost during mass production, so that the gasified steam can be recovered and can be heated again, and the recycling efficiency and importance of the gas phase liquid are improved.

Disclosure of Invention

The invention aims to provide online grading recovery equipment and a gas phase welding method, and aims to solve the problem of high production cost caused by difficult recovery of gas phase liquid in the prior art.

In order to solve the technical problems, the aim of the invention is realized by the following technical scheme:

in a first aspect, the invention provides an online grading recycling device, which comprises a gas-phase welding furnace, a condensing device, a filtering device, a preheating device and a storage device, wherein the storage device is connected with the pipeline of the preheating device, the preheating device is connected with the pipeline of the gas-phase welding furnace, the gas-phase welding furnace is connected with the pipeline of the condensing device, the condensing device is connected with the pipeline of the filtering device, and the filtering device is connected with the pipeline of the storage device.

Further, the gas phase welding furnace comprises a heating cavity, a heating component, a spraying component and a supporting seat, wherein the heating component is installed in the heating cavity, the spraying component is installed in the heating cavity and is located above the heating component, and the supporting seat is installed in the inner wall of the heating cavity and is located above the spraying component.

Further, the heating component comprises a heating plate and a plurality of heating elements, and the heating elements are buried in the heating plate.

Further, condensing equipment includes the condensation box, advances air subassembly, exhaust subassembly and condensation subassembly, the condensation subassembly is located in the condensation box, exhaust subassembly with advance air subassembly and all be located in the condensation box top, exhaust subassembly is kept away from one side of condensation box is equipped with the vacuum pump, the vacuum pump with advance air subassembly and be connected, when gaseous phase liquid steam passes through advance air subassembly injection when the condensation box, the condensation subassembly is liquid with gaseous phase liquid steam condensation, later the air in the condensation box passes through the vacuum pump discharges.

Further, the condensation subassembly includes a plurality of condenser pipes and a plurality of condensing fins, the condenser pipe level is located in the condensation box, the vertical evenly distributed of condensing fins in the condensation box, the condenser pipe with the condensing fins inlays each other and establishes, a plurality of the condenser pipe layering arrange in the condensation box, the condenser pipe is bending setting many times.

Further, filter equipment includes filter equipment, filter equipment includes multilayer filter, recovery pipe and recovery valve, multilayer filter divide into cylindricality portion and toper portion, cylindricality portion is located the top of toper portion, the top of cylindricality portion is equipped with the fluid-discharge tube, recovery pipe connect in the below of toper portion, recovery valve is located on the recovery pipe.

Further, the multi-layer filter comprises a first filter layer, a second filter layer, a third filter layer and a gas-phase liquid layer, wherein the first filter layer, the second filter layer and the third filter layer are all positioned in the cylindrical part, and the gas-phase liquid layer is positioned in the conical part.

Further, the first filter layer, the second filter layer and the third filter layer are cylindrical filter screens, the inner diameters of the first filter layer, the second filter layer and the third filter layer are set from small to large, and the first filter layer, the second filter layer and the third filter layer are sleeved in sequence.

Furthermore, a recovery device is further arranged at the bottom of the gas-phase welding furnace, and a pipeline between the gas-phase welding furnace and the filtering device is connected with the recovery device.

In a second aspect, the invention also provides a gas phase welding method, wherein gas phase liquid in a storage device is conveyed into a preheating device through a pipeline, the gas phase liquid is heated to a gasification critical point after entering the preheating device, and then the gas phase liquid close to the gasification temperature is conveyed into a gas phase welding furnace;

when the gas phase liquid contacts the heating component in the gas phase welding furnace, the gas phase liquid is evaporated instantly, the gas phase liquid vapor rises to weld the product above the heating component, and part of vapor is liquefied after being absorbed by cold product and recovered by the recovery device;

pumping the non-liquefied gas into a condensing device by a vacuum pump, liquefying the mixed gas-phase liquid steam by the condensing device, and discharging the rest gas from the vacuum pump to the outside;

conveying the condensed mixed liquid to a filtering device through a pipeline for layered extraction and filtration, and recovering a layer of gas-phase liquid with the highest bottom density;

and conveying the recovered pure gas phase liquid into a storage device.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, a plurality of independent devices are connected through pipelines, and the steps of preheating, evaporating, welding, vacuumizing, condensing, filtering, recovering and the like are performed to realize the welding of products, and meanwhile, gasified steam is recovered and heated again, so that the recycling efficiency of gas-phase liquid is improved. Compared with the prior art, the invention has the advantages of recovery under the vacuum closed pipeline, high recovery efficiency, extremely low gas-phase liquid loss rate, greatly reduced production cost, and increased liquid filtration after recovery, so that the recovered gas-phase liquid can be completely used as a new use, and the process completely realizes on-line automatic control without manual recovery.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of an online hierarchical recycling device according to an embodiment of the present invention;

FIG. 2 is a schematic view of another view angle structure of the online hierarchical recycling device according to the embodiment of the present invention;

FIG. 3 is a schematic diagram of an online hierarchical recycling device according to an embodiment of the present invention with a chassis removed;

FIG. 4 is a schematic diagram of an embodiment of the present invention, in which a chassis and a part of a structure of an on-line type graded recycling device are removed;

FIG. 5 is an isometric view of an on-line staged recycling device with a chassis removed, in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a gas-phase welding furnace of an on-line staged recycling device according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a front view structure of a gas-phase welding furnace of an on-line type graded recycling device according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a gas phase welding furnace A-A of an on-line staged recycling apparatus in accordance with an embodiment of the present invention;

FIG. 9 is a schematic diagram of an exploded structure of a gas-phase welding furnace of an on-line type classified recycling device according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a condensing unit of an on-line staged recycling apparatus according to an embodiment of the present invention;

FIG. 11 is a schematic view of a condensing unit of an on-line staged recycling apparatus according to an embodiment of the present invention with a front plate of a case removed;

fig. 12 is a schematic view of a condensation box structure of a condensation device of an on-line staged recycling device according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a filtering device of an on-line staged recycling apparatus according to an embodiment of the present invention;

FIG. 14 is a schematic view of a multi-layer filter structure of a filtering device of an on-line staged recycling apparatus according to an embodiment of the present invention;

fig. 15 is a schematic view of a multi-layer filter part of a filtering device of an on-line type graded recycling device according to an embodiment of the present invention.

Reference numerals

1. A gas phase welding furnace; 11. a heating chamber; 12. a heating assembly; 121. a heating plate; 122. a heating element; 13. a spray assembly; 131. a delivery tube; 132. a shunt; 133. a spray head; 14. a clasp assembly; 141. a clamping seat; 142. a clamping arm; 143. a pressing member; 15. a support base; 16. sealing cover; 161. an observation window; 17. locking the air cylinder; 18. vacuumizing the tube; 19. a liquid recovery tube; 20. a cooling tube;

2. a condensing device; 21. a condensing box; 211. a through hole; 212. a liquid discharge pipe; 213. a liquid discharge valve; 22. a condensing assembly; 221. a condensing tube; 222. condensing fins; 223. a refrigerant line; 23. an air intake assembly; 231. an air inlet pipe; 232. an intake valve; 24. an exhaust assembly; 241. an exhaust pipe; 242. an exhaust valve;

3. a filtering device; 31. a filter assembly; 311. a multi-layer filter; 3111. a columnar portion; 3112. a tapered portion; 3113. a first filter layer; 31131. a first filter hole; 3114. a second filter layer; 31141. a second filter hole; 3115. a third filter layer; 31151. a third filter hole; 3116. a gas-phase liquid layer; 312. a recovery pipe; 313. a recovery valve;

4. a preheating device; 5. a storage device; 6. a recovery device; 7. a vacuum pump; 8. a chassis; 9. a controller; 10. a display.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 to 5, the present invention provides an online grading recycling device, which comprises a gas phase welding furnace 1, a condensing device 2, a filtering device 3, a preheating device 4 and a storage device 5, wherein the storage device 5 is connected with the preheating device 4 through a pipeline, the preheating device 4 is connected with the gas phase welding furnace 1 through a pipeline, the gas phase welding furnace 1 is connected with the condensing device 2 through a pipeline, the condensing device 2 is connected with the filtering device 3 through a pipeline, and the filtering device 3 is connected with the storage device 5 through a pipeline.

Specifically, the product is placed in the heating cavity 11, the heat-conducting medium capable of performing gas phase welding on the product, namely gas phase liquid is filled in the storage device 5, the gas phase liquid is conveyed into the preheating device 4 through a pipeline to be preheated, when the preheating is performed to be close to the evaporating temperature, the gas phase liquid is conveyed into the gas phase welding furnace 1 again, after the injected gas phase liquid is heated and gasified, part of gas phase liquid steam contacts the product and is cooled into liquid to be recovered, then the air extraction valve 71 is opened, part of non-liquefied steam is rapidly extracted from the heating cavity 11 by the vacuum pump 7, the steam is cooled through the cooling flow passage in the condensing device 2, the gas phase liquid is condensed into liquid to be retained in the condensing device 2, and the air is pumped by the vacuum pump 7. When the gas-phase liquid in the condensing device 2 is enough, the liquid discharge valve 242 is opened, the gas-phase liquid flows back into the filtering device 3 through the liquid discharge pipe 241, the filtered gas-phase liquid flows back into the storage device 5 through the recovery pipe 312, when the gas-phase liquid in the heating cavity 11 is insufficient, the gas-phase liquid is injected into the heating cavity 11 from the storage device 5, so that the whole gas-phase liquid is recovered, the whole process is recovered under a vacuum sealed pipeline, the recovery efficiency is high, the loss rate of the gas-phase liquid is extremely low, and the production cost is greatly reduced.

Referring to fig. 6 to 9, the gas phase welding furnace 1 includes a heating chamber 11, a heating assembly 12, a spraying assembly 13 and a supporting seat 15, wherein the heating assembly 12 is installed in the heating chamber 11, the spraying assembly 13 is installed in the heating chamber 11 and is located above the heating assembly 12, and the supporting seat 15 is installed on the inner wall of the heating chamber 11 and is located above the spraying assembly 13.

Specifically, the product is placed on the supporting seat 15 in the heating cavity 11, after the heating component 12 begins to heat to a specified temperature, the spraying component 13 sprays heat-conducting medium into the heating cavity 11, the heat-conducting medium drops under the action of gravity, contacts with the heating component 12 and is gasified, and a large amount of steam is generated to heat the product until the welding of the product is completed.

Compared with the prior art, the vapor phase welding furnace 1 provided by the invention has the advantages that the heating component 12 is sunk at the bottom of the heating cavity 11 to heat the heat-conducting medium sprayed by the spraying component 13, so that the heat-conducting medium heats the semiconductor in a steam mode, the temperature of the semiconductor is uniformly distributed in the heating process, the deformation of the semiconductor is avoided, the welding quality of the semiconductor is improved, the heat-conducting medium heats the semiconductor in a steam mode, the steam can transfer heat to the semiconductor more rapidly, and compared with a traditional hot air heating mode, the heating speed is higher, and the welding efficiency of the semiconductor is improved.

As shown in fig. 8-9, the heating assembly 12 includes a heating plate 121 and a plurality of heating elements 122, wherein the heating elements 122 are embedded in the heating plate 121.

Specifically, the spray assembly 13 sprays the heat transfer medium into the heating chamber 11, and the heat transfer medium is vaporized by contact with the heating plate 121 in the heating assembly 12 due to the falling of the heat transfer medium by gravity. The heating element 122 is embedded in the heating plate 121, so that the temperature distribution on the heating plate 121 is uniform, the heating temperature of the material is effectively controlled, and the problem of semiconductor welding quality caused by non-uniform heating temperature is avoided.

As shown in fig. 8-9, the spray assembly 13 includes a delivery tube 131, a shunt tube 132, and a plurality of spray heads 133; the shunt tube 132 communicates with the delivery tube 131, and the shower head 133 is connected to the shunt tube 132.

Specifically, the delivery pipe 131 is connected with an external booster pump, so that the heat-conducting medium is delivered from the outside to the shunt pipe 132 and is sprayed from the spray head 133 to the heating chamber 11, so that the heat-conducting medium is uniformly sprayed onto the surface of the heating plate 121, and the semiconductor is uniformly heated.

As shown in fig. 9, the vacuum welding furnace further comprises a vacuum tube 18, and the vacuum tube 18 is communicated with the heating cavity 11; the evacuation tube 18 is used to evacuate the heating chamber 11.

Specifically, the evacuation tube 18 is connected to the external vacuum pump 7, and the evacuation tube 18 is an air tube in this embodiment. After the semiconductor is heated, the vacuumizing tube 18 pumps air and other gases in the heating cavity 11, so that the heating cavity 11 is in a vacuum environment, and the generation of semiconductor bubbles after the welding is reduced.

As shown in fig. 8, the vacuum welding furnace further includes a liquid recovery tube 19; the liquid recovery tube 19 communicates with the heating chamber 11. The liquid recovery pipe 19 is used for condensing and recovering the gas in the heating chamber 11.

Specifically, in this embodiment, the liquid recovery pipe 19 is a liquid discharge pipe, which is used for recovering the condensed liquid after the vapor phase liquid vapor in the heating cavity 11 contacts with the product, and the liquid recovery pipe 19 is located at the bottom of the heating cavity 11, so as to avoid interference to the semiconductor heating process.

As shown in fig. 8, the gas phase welding furnace further includes a cooling pipe 20, and the cooling pipe 20 is located at the top of the heating chamber 11 and communicates with the heating chamber 11.

Specifically, in this embodiment, after the product is welded in the heating cavity 11, the ambient temperature in the heating cavity 11 is kept at a very high value, if the temperature of the heating cavity 11 is not reduced, the next batch of products will be affected to a certain extent in the welding process, so after the product is heated and welded by the gas, the cooling tube 20 will be immediately injected with nitrogen to cool the heating cavity, so as to prevent the new product from being placed in the heating cavity 11 and not vacuumized and being heated and welded by the ambient temperature in the heating cavity 11, thereby resulting in poor welding effect of the product.

Referring to fig. 10 to 12, the condensing device 2 includes a condensing box 21, an air inlet assembly 23, an air outlet assembly 24 and a condensing assembly 22, the condensing assembly 22 is located in the condensing box 21, the air outlet assembly 24 and the air inlet assembly 23 are both located above the condensing box 21, a vacuum pump 7 is disposed on one side of the air outlet assembly 24 far away from the condensing box 21, the vacuum pump 7 is connected with the air inlet assembly 23, when vapor-phase liquid vapor is injected into the condensing box 21 through the air inlet assembly 23, the condensing assembly 22 condenses the vapor-phase liquid vapor into liquid, and then air in the condensing box 21 is discharged through the vacuum pump 7.

Specifically, the high-temperature gas-phase liquid vapor is conveyed into the condensing box body 21 from the air inlet assembly 23, and is converted into liquid after being cooled by the condensing assembly 22 in the condensing box body 21, so that in the gas-phase welding process, the semiconductor is not affected by air to oxidize, pollute and other side effects, and the whole gas-phase heating process is in a vacuum state, therefore, when the gas-phase liquid in the condensing box body reaches a certain amount, the vacuum pump 7 is started until the air in the condensing box body 21 is completely pumped out, the gas-phase liquid in the condensing box body 21 can be discharged and recovered, in this way, the vacuum pump 7 is started after the gas-phase liquid vapor is condensed, the risk that the gas-phase liquid vapor and the air are directly pumped away in the vacuumizing process is eliminated, and the loss of the gas-phase liquid in the gas-phase welding process is effectively reduced.

As shown in fig. 11-12, the condensing assembly 22 includes a plurality of condensing tubes 221 and a plurality of condensing fins 222, the condensing tubes 221 are horizontally disposed in the condensing box 21, the condensing fins 222 are vertically and uniformly distributed in the condensing box 21, and the condensing tubes 221 and the condensing fins 222 are mutually embedded.

Specifically, in the present embodiment, the number of the condensation pipes 221 is three, and in other embodiments, the number of the condensation pipes 221 may be specifically set according to the space size of the condensation box 21 and the requirement of the condensation effect. By arranging the plurality of condensing fins 222 on the condensing tube 221, the surface area of the condensing tube 221 can be effectively increased, so that the heat dissipation efficiency is improved, and the existence of the condensing fins 222 can promote heat conduction and convection, thereby being beneficial to accelerating heat transfer and dissipation. When the high temperature vapor phase liquid vapor passes through the condensing tube 221, the condensing fins 222 provide more surface area to facilitate heat dissipation into the surrounding air, and by increasing the surface area, the condensing fins 222 provide more contact points to facilitate heat transfer more efficiently. In addition, the presence of the condensing fins 222 also increases the turbulence level of the air flow, enhancing the convective heat dissipation effect.

As shown in fig. 11-12, a plurality of condensation pipes 221 are arranged in layers on the condensation box body 21, and the condensation pipes 221 are arranged in a multi-bending way.

Specifically, the multi-layer arrangement of the condensing pipes 221 can increase the surface area of the condenser, so that the condensing medium can more fully contact the condensing pipes 221, and the condensing effect is improved. The condensing medium can release heat when contacting with the pipe wall of the condensing pipe 221, the condensing process is more sufficient through multi-layer paving, so that the medium is easier to be converted into liquid from gas, the condensing efficiency is improved, and the moving path of steam in the condensing assembly 22 is increased through bending the condensing pipe 221 for a plurality of times, so that the condensing effect is improved in a short time, and the air in the condensing box 21 is prevented from being heated to an excessive temperature by gas-phase liquid steam, thereby damaging the vacuum pump.

Further, the condenser 221 is provided with a refrigerant, which is gas or liquid.

In particular, there are many kinds of condensing agents, among which water is one of the most common condensing agents, which has good heat conduction performance and stable physical properties, and in addition to the gas condensing agents such as air, R-22 (freon-22), R-410A (freon-410A), and R-134a (freon-134 a), in the condenser, the refrigerant is in a gas state or a liquid state in a high temperature and high pressure state, and by contacting with a condensation tube in the condenser, heat is released to the surrounding environment, so that the refrigerant is phase-changed from the gas state to the liquid state. During the phase change, the refrigerant releases latent heat, resulting in a temperature drop, thereby achieving heat removal and cooling effects of the refrigeration system.

As shown in fig. 10-11, the intake assembly 23 includes an intake pipe 231 and an intake valve 232, the intake valve 232 is provided on the intake pipe 231, the exhaust assembly 24 includes an exhaust pipe 241 and an exhaust valve 242, and the exhaust valve 242 is provided on the exhaust pipe 241.

Specifically, the air intake assembly 23 controls the transmission of vapor phase liquid vapor in the condensation box 21, the air exhaust assembly 24 controls the discharge of air, in this embodiment, the air intake valve 232 is opened in one step, after the air intake pipe 231 transmits a certain amount of vapor phase liquid vapor and is completely condensed and liquefied, the air intake valve 242 is closed to stop air intake, at this time, the vacuum pump 7 is started, the air exhaust valve 242 is opened, and the air and the non-liquefied gas in the condensation box 21 are completely extracted, so as to ensure the vacuum state in the vapor phase liquid recovery process.

As shown in fig. 2-3, a through hole 111 is formed in the bottom of the condensation box 11, a liquid discharge pipe 121 is connected below the condensation box 1, the liquid discharge pipe 121 is communicated with the through hole 111, a liquid discharge valve 213 is arranged on the liquid discharge pipe 212, and the gas phase liquid condensed by the condensation assembly 21 is recovered through the liquid discharge pipe 121.

Referring to fig. 13 and 15, the filtering device 3 includes a filtering component 31, the filtering component 31 includes a multi-layer filter 311, a recovery tube 312 and a recovery valve 313, the multi-layer filter 311 is divided into a cylindrical portion 3111 and a tapered portion 3112, the cylindrical portion 3111 is located above the tapered portion 3112, the drain tube 212 is connected above the cylindrical portion 3111, the recovery tube 312 is connected below the tapered portion 3112, and the recovery valve 313 is located on the recovery tube 312.

Specifically, after the high-temperature steam mixed with the gas-phase liquid enters the condensing device 2, the condensing device 2 provides enough refrigerating capacity to enable the gas-phase liquid mixed steam to be cooled to the liquid-phase temperature and then be converted into mixed liquid, part of the gas which is not liquefied is discharged from the condensing device 2, the mixed liquid is accumulated to a certain level when the mixed liquid is accumulated to a certain amount, the mixed liquid enters the filtering component 31 through the opening of the liquid discharge valve 213, the mixed liquid is recycled in the filtering component 31 through multi-layer filtering, in this way, other substances mixed in the gas-phase liquid steam can be separated out, the purity of the gas-phase liquid is kept, and in addition, the filtering can be carried out while the fluid is transmitted through an online filtering mode, so that the real-time filtering effect is realized, and further the production efficiency is effectively improved.

Further, the gas phase mixture cooled by the condensing device 2 enters the multi-layer filter 311 through the liquid discharge pipe 212 and the liquid discharge valve 213, the upper half of the multi-layer filter 311 is cylindrical, and the lower half is conical, so that the flow property of the fluid can be improved due to the structure of the conical filter, the liquid can form a natural flow path when passing through the conical filter, the resistance of the liquid is reduced, the filtering efficiency is improved, and the fluid can uniformly pass through the filter.

As shown in fig. 14 to 15, the first filter layer 3113, the second filter layer 3114 and the third filter layer 3115 are cylindrical filter screens, the inner diameters of the first filter layer 3113, the second filter layer 3114 and the third filter layer 3115 are set from small to large, and the first filter layer 3113, the second filter layer 3114 and the third filter layer 3115 are sequentially sleeved.

Specifically, in the present embodiment, the multi-layer filter 311 is a multi-layer cylindrical filter screen structure, which can increase the surface area of the multi-layer filter 311, and increase the chance of contact between the material and the filter screen, thereby improving the filtering efficiency. By means of the multi-layer screen, solid particles, impurities or other contaminants suspended in the fluid can be better captured and removed, and the multi-layer cylindrical screen has a larger volume than a single-layer screen, and can accommodate more solid particles or contaminants, which means that the multi-layer filter 311 can handle more fluid, extending the service time and replacement cycle.

As shown in fig. 14 to 15, the barrels of the first filter layer 3113 and the second filter layer 3114 are respectively and uniformly provided with a plurality of first filter holes 31131 and second filter holes 31141, the barrel bottom and the barrel top of the third filter layer 3115 are provided with third filter holes 31151, and the sizes of the first filter holes 31131, the second filter holes 31141 and the third filter holes 31151 decrease in sequence.

Specifically, the outermost cylinder wall of the multi-layer cylindrical filter screen is not provided with a filter hole, and the gas phase mixed liquid flows out from the bottom of the third filter layer 3115 after being filtered by the two layers, so that pollutants are prevented from entering the gas phase liquid layer 3116 from the side wall of the cylindrical filter screen, and the filtering effect is improved. Different layers of filter screens can filter particles with different sizes, a coarser filter screen layer can catch large particles, and a finer filter screen layer can further remove tiny particles, so that more accurate filtering control is realized.

Further, in this embodiment, an adsorbent material is disposed between the cylindrical filter screens.

Specifically, the adsorbent material is activated carbon, molecular sieve, etc., and in other embodiments, other types of materials may be used according to the adsorption effect. Through setting up the adsorption material between the tube-shape filter screen, can progressively intercept big granule solid impurity, little granule impurity, greasy dirt etc. in the mixed liquid, the granule and the pollutant of different sizes, nature are filtered to the successive layer to provide more effective purifying effect.

As shown in fig. 3, the bottom of the gas-phase welding furnace 1 is also provided with a recovery device 6, and a pipeline between the gas-phase welding furnace 1 and the filtering device 3 is connected with the recovery device 6.

Specifically, in this embodiment, the recovery device 6 is a recovery tank, a recovery branch pipe is provided on a pipeline between the filtration device 3 and the storage device 5, the recovery branch pipe communicates the filtration device 3 with the gas phase welding furnace 1, the recovery tank is located on the recovery branch pipe, after the gas phase liquid vapor in the gas phase welding furnace 1 contacts the product and is liquefied, the liquefied gas phase liquid vapor enters the recovery branch pipe, and the gas phase liquid is conveyed into the filtration device 3 through a valve on the recovery branch pipe to be filtered again, the filtered gas phase liquid finally returns into the storage device 5, and impurities such as soldering flux and the like mixed in the gas phase liquid can be effectively removed by recovering and filtering the condensed gas phase liquid in the gas phase welding furnace 1, so as to ensure the purity of the gas phase liquid.

As shown in fig. 1 to 4, the gas phase welding furnace 1, the condensing device 2, the filtering device 3, the preheating device 4, the storage device 5 and the recovery device 6 are all accommodated in a case 8, a controller 9 is arranged on one side plate of the case 8, a connecting pipe is arranged at the top of the case 8, and a display 10 is arranged at the end part of the connecting pipe.

Specifically, in this embodiment, each valve and device in the chassis are started and operated by the controller 9, the controller 9 receives and processes the input signals, generates corresponding output signals according to a preset control algorithm, and controls and manages the operation of the device by the actuator, and the display 10 can monitor and timely early warn the operation condition of the device.

The invention also provides a gas phase welding method, the gas phase liquid in the storage device 5 is conveyed into the preheating device 4 through the pipeline, the gas phase liquid is heated to the gasification critical point after entering the preheating device 4, and then the gas phase liquid close to the gasification temperature is conveyed into the gas phase welding furnace 1;

when the gas phase liquid contacts the heating component 12 in the gas phase welding furnace 1 and is evaporated instantly, the gas phase liquid vapor rises to weld the product above the heating component 12, and part of vapor is liquefied after being absorbed by cold product and is recovered by the recovery device 6;

the non-liquefied gas is pumped into the condensing device 2 by the vacuum pump 7, the mixed gas phase liquid steam is liquefied by the condensing device 2, and the rest gas is pumped to the outside from the vacuum pump 7 and discharged;

the mixed liquid obtained by condensation is conveyed to a filtering device 3 by a pipeline to be subjected to layered extraction and filtration, and a layer of gas phase liquid with the highest density at the bottommost part is taken for recovery;

the recovered purified gas phase liquid is transported to the storage device 5.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. The online grading recycling device is characterized by comprising a gas phase welding furnace, a condensing device, a filtering device, a preheating device and a storage device, wherein the storage device is connected with a pipeline of the preheating device, the preheating device is connected with the gas phase welding furnace through a pipeline, the gas phase welding furnace is connected with the condensing device through a pipeline, the condensing device is connected with the filtering device through a pipeline, and the filtering device is connected with the storage device through a pipeline.

2. The on-line staged recycling apparatus of claim 1, wherein the gas phase welding furnace comprises a heating chamber, a heating assembly, a spraying assembly and a support base; the heating assembly is installed in the heating cavity, the spraying assembly is installed in the heating cavity and located above the heating assembly, and the supporting seat is installed in the inner wall of the heating cavity and located above the spraying assembly.

3. The on-line staged recycling apparatus according to claim 2, wherein the heating assembly comprises a heating plate and a plurality of heating elements embedded in the heating plate.

4. The on-line classified recycling device according to claim 1, wherein the condensing means comprises a condensing box, an air inlet assembly, an air outlet assembly and a condensing assembly, the condensing assembly is located in the condensing box, the air outlet assembly and the air inlet assembly are located above the condensing box, a vacuum pump is arranged on one side, far away from the condensing box, of the air outlet assembly, the vacuum pump is connected with the air inlet assembly, and when vapor-phase liquid vapor is injected into the condensing box through the air inlet assembly, the condensing assembly condenses the vapor-phase liquid vapor into liquid, and then air in the condensing box is discharged through the vacuum pump.

5. The on-line classified recycling device according to claim 4, wherein the condensing assembly comprises a plurality of condensing pipes and a plurality of condensing fins, the condensing pipes are horizontally arranged in the condensing box, the condensing fins are vertically and uniformly distributed in the condensing box, the condensing pipes and the condensing fins are embedded with each other, the plurality of condensing pipes are arranged in the condensing box in a layered manner, and the condensing pipes are arranged in a plurality of bending manners.

6. The on-line classified recycling apparatus according to claim 1, wherein the filtering means comprises a filtering assembly comprising a multi-layer filter, a recycling pipe and a recycling valve, the multi-layer filter is divided into a cylindrical portion and a conical portion, the cylindrical portion is located above the conical portion, a drain pipe is provided above the cylindrical portion, the recycling pipe is connected below the conical portion, and the recycling valve is located on the recycling pipe.

7. The on-line staged recovery device of claim 6, wherein the multi-layer filter includes a first filter layer, a second filter layer, a third filter layer, and a vapor phase liquid layer, the first filter layer, the second filter layer, and the third filter layer being located within the cylindrical portion, the vapor phase liquid layer being located within the conical portion.

8. The on-line classified recycling device of claim 7, wherein the first filter layer, the second filter layer and the third filter layer are cylindrical filter screens, and the inner diameters of the first filter layer, the second filter layer and the third filter layer are set from small to large, and the first filter layer, the second filter layer and the third filter layer are sequentially sleeved.

9. The on-line classified recycling device according to claim 1, wherein the bottom of the gas-phase welding furnace is further provided with a recycling device, and a pipe between the gas-phase welding furnace and the filtering device is connected with the recycling device.

10. The gas phase welding method is characterized in that gas phase liquid in a storage device is conveyed into a preheating device through a pipeline, the gas phase liquid enters the preheating device and is heated to a gasification critical point, and then the gas phase liquid close to the gasification temperature is conveyed into a gas phase welding furnace;

when the gas phase liquid contacts the heating component in the gas phase welding furnace, the gas phase liquid is evaporated instantly, the gas phase liquid vapor rises to weld the product above the heating component, and part of vapor is liquefied after being absorbed by cold product and recovered by the recovery device;

pumping the non-liquefied gas into a condensing device by a vacuum pump, liquefying the mixed gas-phase liquid steam by the condensing device, and discharging the rest gas from the vacuum pump to the outside;

conveying the condensed mixed liquid to a filtering device through a pipeline for layered extraction and filtration, and recovering a layer of gas-phase liquid with the highest bottom density;

and conveying the recovered pure gas phase liquid into a storage device.