CN110732642A - Hot-air dry dewaxing system - Google Patents
Hot-air dry dewaxing system Download PDFInfo
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- CN110732642A CN110732642A CN201911225886.9A CN201911225886A CN110732642A CN 110732642 A CN110732642 A CN 110732642A CN 201911225886 A CN201911225886 A CN 201911225886A CN 110732642 A CN110732642 A CN 110732642A
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- wax
- dewaxing
- formwork
- air dry
- treatment chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a hot air dry dewaxing system, comprising: the device comprises a mould shell fixing platform, a dewaxing treatment chamber, a roasting furnace, a fan and a wax collecting pool, wherein the mould shell fixing platform is used for placing a mould shell, the roasting furnace is arranged beside the dewaxing treatment chamber, an air inlet of the fan is communicated with the roasting furnace, an air outlet of the fan is communicated with the dewaxing treatment chamber, the mould shell fixing platform can enter the dewaxing treatment chamber through the rotation of a pulley, the wax collecting pool is positioned below the horizontal ground surface, and a wax discharging port of the dewaxing treatment chamber is used for enabling fluid wax to enter the wax collecting pool through a wax discharging channel. According to the hot air dry dewaxing system, the fan of the roasting furnace sends hot air to the conveying pipeline, and the heat is transmitted to the mould shell through the radiating pipe, so that the roasting time of the roasting furnace is shortened, fluid wax obtained through high-temperature melting can enter a wax mould workshop again through the three layers of 140-mesh filter screens for reuse, the energy consumption is reduced, the environment-friendly requirement is met, raw materials are saved, and the raw material cost is reduced.
Description
Technical Field
The invention belongs to the technical field of casting of precision castings, and particularly relates to a hot air dry method dewaxing system.
Background
The dewaxing process of the high-pressure autoclave comprises the steps of putting a formwork in an autoclave, melting all the formwork wax, and discharging the wastewater, wherein the formwork is easy to damage due to large pressure of the formwork, 2, silica sol is easy to generate return, 3, high-pressure steam needs to be injured, and the like, and a high-temperature steam generator is easy to cause high temperature of a steam generator, so that workers are easy to pass through a high-pressure autoclave.
Therefore, the invention aims to obtain a hot air dry dewaxing system by changing the structure of processing equipment so as to replace the dewaxing method in the prior art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problems of poor quality of casting products, non-conformity with national environmental protection requirements, high cost and the like in the prior art are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a hot air dry dewaxing system comprising: a mould shell fixing platform, a dewaxing treatment chamber, a roasting furnace, a fan and a wax collecting tank,
the formwork fixing table comprises a formwork fixing frame for placing a formwork, an th wax storage disc for collecting fluid wax and a mobile station, the formwork fixing frame is placed on the th wax storage disc, the th wax storage disc is placed on the mobile station, a plurality of pulleys are arranged below the mobile station,
the roasting furnace is arranged beside the dewaxing treatment chamber, the air inlet of the fan is communicated with the roasting furnace, the air outlet of the fan is communicated with the dewaxing treatment chamber,
the dewaxing treatment chamber comprises a chamber body, a conveying pipeline, a plurality of radiating pipes, an air outlet, a wax discharge port and a plurality of tracks, wherein the conveying pipeline and the plurality of radiating pipes are arranged on the inner wall of the chamber body, the end of the conveying pipeline is connected with the air outlet of the fan, the other end of the conveying pipeline is communicated with the radiating pipes, each radiating pipe is provided with a plurality of radiating ports, the radiating ports face to the central area of the chamber body, the air outlet is positioned at the top of the chamber body and is communicated with the outside, the wax discharge port is positioned at the bottom of the side wall of the chamber body, the tracks are arranged on the inner surface of the bottom of the chamber body, the tracks are matched with the pulleys, and the formwork fixing table can enter the chamber body through the rotation of the pulleys,
the wax collecting pool is positioned below the horizontal ground surface, the end of the wax discharge channel is connected with the wax discharge port, the end is positioned above the wax collecting pool, and fluid wax enters the wax collecting pool from the wax discharge port through the wax discharge channel.
The formwork fixing frame comprises preferred embodiments of the invention, the formwork fixing frame comprises a rectangular fixing frame, a plurality of fixing strips and a plurality of fixing feet, the bottoms of the fixing feet stand on the wax storage disc, the tops of the fixing feet are connected with the rectangular fixing frame, the fixing strips are arranged in the rectangular fixing frame in parallel, and two ends of the fixing strips are respectively connected with the rectangular fixing frame.
In preferred embodiments of the present invention, fluid wax outlets are provided at the bottom of the wax tray, and the outlets are located right above the wax outlet when the formwork holding platform is pushed into the dewaxing chamber.
As an preferred embodiment of the present invention, the formwork holding station further comprises a second wax storage tray, and the fluid wax outlet is located directly above the second wax storage tray after the formwork holding station is pushed out of the dewaxing treatment chamber.
As preferred embodiments of the present invention, the bottom plate of the th wax storage plate is inclined towards the outlet of the fluid wax.
As preferred embodiments of the present invention, the chamber body has three side walls, top walls and sides , the plurality of radiating pipes are respectively located on the three side walls and the top walls of the chamber body, and the radiating pipes located on the three side walls are communicated with each other.
The preferred embodiments of the present invention include that the wax collecting tank includes a filter sub-tank, a second filter sub-tank, and a third filter sub-tank, the filter sub-tank, the second filter sub-tank, and the third filter sub-tank are sequentially arranged, a th partition plate is disposed between the filter sub-tank and the second filter sub-tank, a th filter screen is embedded in the th partition plate, a second partition plate is disposed between the second filter sub-tank and the third filter sub-tank, a second filter screen is embedded in the second partition plate, a filter basket is disposed in the filter sub-tank, a basket wall of the filter basket is composed of the third filter screen, the end of the wax discharge channel is located above the filter basket, the fluid wax passes through the filter sub-tank, the second filter sub-tank, and the third filter sub-tank from the wax discharge channel, and the third filter sub-tank is led to the wax pattern workshop through a pipeline.
As preferred embodiments of the invention, the conduit is provided with a pump for drawing fluid wax.
As preferred embodiments of the present invention, the apertures of the filter, the second filter and the third filter are all 140 meshes.
As preferred embodiments of the present invention, the hot air dry dewaxing system further includes a control device, the control device controls opening and closing of the side of the chamber body, the mobile station is provided with a motor for driving the pulley to rotate, the motor is electrically connected to the control device, when the motor is started, the formwork fixing station moves into or out of the dewaxing treatment chamber, the pump body is electrically connected to the control device, and when the pump body is started, the fluid wax is fed into the wax pattern workshop from the wax collecting pool.
The invention has the beneficial effects that:
1. the hot air dry dewaxing system consists of a mould shell fixing platform, a dewaxing treatment chamber, a burning chamber and a wax collecting pool, and has simple structure and low equipment manufacturing cost;
2. the fluid wax can be recycled after being filtered, so that the energy consumption is reduced;
3. in the dewaxing process, hydrochloric acid is not required to be added for treatment, so that the method is pollution-free and environment-friendly;
5. and the dewaxed casting product does not contact with water vapor, so that the casting product does not need to be dried again, and the cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of a formwork fixing table, a dewaxing treatment chamber and a roasting furnace of a hot air dry dewaxing system according to the present invention;
FIG. 2 is a schematic structural diagram of a dewaxing treatment chamber, a roasting furnace and a wax collecting tank of the hot air dry dewaxing system according to the present invention;
fig. 3 is a schematic structural diagram of a dewaxing processing chamber of the hot air dry dewaxing system according to the present invention.
Wherein, 1 is a formwork fixing table, 11 is a formwork fixing frame, 111 is a rectangular fixing frame, 112 is a fixing strip, 113 is a fixing foot, 12 is an th wax storage disc, 121 is a fluid wax outlet, 13 is a moving table, 14 is a pulley, 15 is a second wax storage disc, 2 is a dewaxing treatment chamber, 21 is a chamber body, 22 is a conveying pipeline, 23 is a radiating pipe, 24 is an exhaust port, 25 is a wax discharge port, 26 is a rail, 27 is a radiating port, 28 is a wax discharge channel, 3 is a roasting furnace, 4 is a wax collecting tank, 41 is a th filtering sub-tank, 42 is a second filtering sub-tank, 43 is a third filtering sub-tank, 44 is a th partition plate, 45 is a second partition plate, 46 is a filtering basket, and 47 is a pump body.
Detailed Description
The invention will now be described in further with reference to specific examples, but the scope of the invention is not limited to these examples.
Example 1
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a mold shell fixing platform, a dewaxing processing chamber and a roasting furnace of a hot air dry dewaxing system according to the present invention; FIG. 2 is a schematic structural diagram of a dewaxing treatment chamber, a roasting furnace and a wax collecting tank of the hot air dry dewaxing system according to the present invention; fig. 3 is a schematic structural diagram of a dewaxing processing chamber of the hot air dry dewaxing system according to the present invention. As shown in fig. 1-3, a hot air dry dewaxing system includes: a formwork fixing table 1, a dewaxing treatment chamber 2, a roasting furnace 3, a fan (not shown) and a wax collecting tank 4, which are described in detail for easy understanding.
The formwork fixing station 1 is divided into a formwork fixing frame 11, an th wax storage plate 12 and a moving station 13 according to the structure from top to bottom, the formwork fixing frame 11 is used for placing a formwork (not shown), the formwork is placed on the formwork fixing frame 11 in an inverted mode and is fixedly adjusted through angle iron, the formwork fixing frame 11 is placed on a th wax storage plate 12, a th wax storage plate 12 is used for collecting fluid wax, the fluid wax is dripped into the th wax storage plate 12 after the wax on the formwork is melted, fluid wax outlets 121 are arranged on a base plate of the th wax storage plate 12, a base plate of the th wax storage plate 12 is inclined towards the fluid wax outlets 121, the fluid wax can be discharged from the fluid wax outlets 121 when the th wax storage plate 12 contains the fluid wax, the th wax storage plate 12 is placed on the moving station 13, and in order to realize the moving function, a plurality of pulleys 14 are arranged below the moving station 13, so that the fixing station 1 can enter or exit from a chamber body 21 through the rotation of the pulleys 14.
In embodiments, the formwork fixing frame 11 is divided into three parts, namely a rectangular fixing frame 111, a plurality of fixing bars 112 and a plurality of fixing feet 113, the plurality of fixing bars 112 are arranged in the rectangular fixing frame 111 in parallel, two ends of the plurality of fixing bars 112 are respectively connected with the rectangular fixing frame 111 to form a planar fence structure, a plurality of formworks are sequentially arranged between adjacent fixing bars, the plurality of fixing feet 113 are used for supporting the rectangular fixing frame 111, are perpendicular to and connected with the rectangular fixing frame 111, and stand on the wax storage tray 12 at the bottom.
When the formwork holding platform 1 is pushed out of the chamber body 21, the wax on the formwork is certainly completely melted, but there may be a part of the wax in the th wax storage tray 12, in order to avoid a small amount of fluid wax flowing from the fluid wax outlet 121 of the th wax storage tray 12 to the ground, which is not beneficial to recycling, a second wax storage tray 15 is further provided beside the formwork holding platform 1, and after the formwork holding platform 1 is pushed out of the dewaxing treatment chamber 2, the fluid wax outlet 121 is located right above the second wax storage tray 15.
The roasting furnace 3 is arranged near the dewaxing treatment chamber 2, the best setting position is that the roasting furnace is attached to the dewaxing treatment chamber 2, the roasting furnace 3 is connected with the dewaxing treatment chamber 2 through a pipeline, a fan is arranged on the connecting pipeline, an air inlet (not shown) of the fan is communicated with the roasting furnace 3, an air outlet (not shown) of the fan is communicated with the dewaxing treatment chamber 2, heat obtained by the roasting furnace 3 is sent into the dewaxing treatment chamber 2 through the fan and the pipeline, and the temperature of the dewaxing treatment chamber 2 is increased so as to achieve the purpose of melting wax on a formwork.
The dewaxing treatment chamber 2 is functionally divided into four parts, a first part is a chamber body 21 for providing a holding space for the formwork holding station 1, a second part is a plurality of tracks 26 for providing a transfer function for the formwork holding station 1, a third part is a transfer pipe 22 for transferring heat, a plurality of heat pipes 23 and exhaust ports 24, a fourth part is a wax discharge port 25 for discharging fluid wax, the transfer pipe 22 and the plurality of heat pipes 23 are all disposed on the inner wall of the chamber body 21, the transfer pipe 22 is attached to the side wall near the face of the roaster 3, the end of the transfer pipe 22 is connected to the air outlet of the fan for supplying heat from the roaster 3 to the dewaxing treatment chamber 2, the other end of the transfer pipe 22 is connected to at least heat pipes 23, the remaining heat pipes 23 can be connected end to the heat pipes 23 or can be directly connected to the transfer pipe 22 to obtain heat transfer, the plurality of heat pipes 23 are respectively disposed on the three side walls of the chamber body 21 and the top wall of the top wall , a plurality of heat pipes 27 are disposed on each side wall of the chamber body 21 and are disposed on the top wall of the wax outlet of the formwork body 21, when the wax holding chamber 21, the wax is not exposed to the wax holding station 1, the wax outlet of the wax, the wax is not contaminated by the wax, the wax discharge port 21, the wax is disposed in the environment, the wax discharge port 21, the environment, the wax discharge port is not contaminated by the wax discharge port, the environment, the wax discharge port 14, the wax discharge port is not contaminated by the wax discharge port, the wax discharge port 21, the environment is not contaminated by the environment.
The wax collecting tank 4 is located below a horizontal ground surface, the end of the wax discharge channel 28 is connected with the wax discharge port 25, the end is located above the wax collecting tank 4, the fluid wax enters the wax collecting tank 4 from the wax discharge port 25 through the wax discharge channel 28, the wax collecting tank 4 is divided into three times of filtration, and thus, the three times of filtration are divided into three filter sub-tanks, namely a th filter sub-tank 41, a second filter sub-tank 42 and a third filter sub-tank 43, a th filter sub-tank 41, a second filter sub-tank 42 and a third filter sub-tank 43, the fluid wax passes through a th filter sub-tank 41, a second filter sub-tank 42 and a third filter sub-tank 43 in sequence, the filter sub-tank is separated by a closed partition board arranged between the adjacent two filter sub-tanks, filter screens are arranged at the lowermost part of the partition board, the two adjacent filter sub-tanks are communicated through, therefore, a filter sub-tank 41 and the second filter sub-tank 42 is provided with a third filter sub-tank 46, a fluid wax collecting tank 46 is provided with a filter basket 46 which is directly connected to the third filter sub-tank 41, a fluid wax collecting tank 46 is provided with a filter basket 46 which is directly taken out of the filter basket 46, a fluid wax collecting tank 46 which is directly taken out from the filter basket 46, a fluid wax collecting tank 46 which is provided with a fluid wax collecting tank 46 which is directly taken out of the third filter basket 46, a fluid wax collecting tank 46 which is provided with a third filter basket 9 which is provided with a third filter basket 46 which is provided with a filter basket 9 which is provided in which is provided with a filter basket 9 which is.
In order to make the above-mentioned hot-air dry dewaxing system more convenient and mechanized, it also includes a control device (not shown), said control device can be used for controlling opening and closing of side of chamber body 21, also can be used for controlling motor (not shown) for driving pulley 14 to make rotation, when the motor is started, the mould shell fixing table 1 can be moved into or withdrawn from dewaxing treatment chamber 2, and also can be used for controlling opening and closing of pump body 47, when the pump body 47 is started, the fluid wax can be fed into the wax mould workshop from wax-collecting pool 4.
The operation principle of the hot air dry dewaxing system under is emphasized below, in which a formwork fixing table 1 is placed on a furnace table in an inverted manner and fixed by angle iron, a side of a chamber body 21 is opened by a control device, a motor is started by the control device to push the formwork fixing table 1 into the chamber body 21, a side of the chamber body 21 is closed by the control device, the temperature of a roasting furnace 3 is set to 240 ℃ and then ignited, after about 8 minutes, fluid wax begins to flow from a formwork on the formwork fixing table 1, after about 15-20 minutes, the set temperature is set to 150 ℃ and after about 3 hours, the temperature is set to 100 ℃, when no fluid wax flows out from a wax discharge port 25, heating can be stopped, the dewaxed formwork is sent out from a dewaxing treatment chamber 2 and the fluid wax flowing into a wax collecting tank 4 is filtered by three filter sub-tanks and then sent to a wax model workshop by a pump 47 for reuse.
In conclusion, according to the hot air dry dewaxing system, the fan of the roasting furnace sends hot air to the conveying pipeline, and the heat is transmitted to the mould shell through the heat radiating pipe, so that the roasting time of the roasting furnace is shortened from original 8-10 hours to current 4-5 hours, and fluid wax obtained through high-temperature melting passes through the three layers of 140-mesh filter screens and can enter the wax mould workshop again for reuse, the energy consumption is reduced, the environment-friendly requirement is met, raw materials are saved, and the raw material cost is reduced.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A hot air dry dewaxing system, comprising: a mould shell fixing platform, a dewaxing treatment chamber, a roasting furnace, a fan and a wax collecting tank,
the formwork fixing table comprises a formwork fixing frame for placing a formwork, an th wax storage disc for collecting fluid wax and a mobile station, the formwork fixing frame is placed on the th wax storage disc, the th wax storage disc is placed on the mobile station, a plurality of pulleys are arranged below the mobile station,
the roasting furnace is arranged beside the dewaxing treatment chamber, the air inlet of the fan is communicated with the roasting furnace, the air outlet of the fan is communicated with the dewaxing treatment chamber,
the dewaxing treatment chamber comprises a chamber body, a conveying pipeline, a plurality of radiating pipes, an air outlet, a wax discharge port and a plurality of tracks, wherein the conveying pipeline and the plurality of radiating pipes are arranged on the inner wall of the chamber body, the end of the conveying pipeline is connected with the air outlet of the fan, the other end of the conveying pipeline is communicated with the radiating pipes, each radiating pipe is provided with a plurality of radiating ports, the radiating ports face to the central area of the chamber body, the air outlet is positioned at the top of the chamber body and is communicated with the outside, the wax discharge port is positioned at the bottom of the side wall of the chamber body, the tracks are arranged on the inner surface of the bottom of the chamber body, the tracks are matched with the pulleys, and the formwork fixing table can enter the chamber body through the rotation of the pulleys,
the wax collecting pool is positioned below the horizontal ground surface, the end of the wax discharge channel is connected with the wax discharge port, the end is positioned above the wax collecting pool, and fluid wax enters the wax collecting pool from the wax discharge port through the wax discharge channel.
2. The hot-air dry dewaxing system of claim 1, wherein the formwork holder has a rectangular fixing frame, a plurality of fixing strips and a plurality of fixing feet, the bottoms of the fixing feet stand on the th wax storage disc, the tops of the fixing feet are connected with the rectangular fixing frame, the fixing strips are arranged in the rectangular fixing frame in parallel, and two ends of the fixing strips are respectively connected with the rectangular fixing frame.
3. The hot air dry dewaxing system of claim 1, wherein:
fluid wax outlets are formed in the bottom of the wax storage disc, and when the formwork fixing table is pushed into the dewaxing processing chamber, the fluid wax outlets are located right above the wax discharge port.
4. The hot air dry dewaxing system of claim 3, wherein: the mould shell fixing station also comprises a second wax storage disc, and when the mould shell fixing station is pushed out of the dewaxing treatment chamber, the fluid wax outlet is positioned right above the second wax storage disc.
5. The hot-air dry dewaxing system of claim 3, wherein the pan on the th wax storage pan is inclined toward the outlet of the fluid wax.
6. The hot air dry dewaxing system of claim 1, wherein the chamber body has three side walls, top walls and sides , the plurality of heat pipes are respectively located on the three side walls and top walls of the chamber body, and the heat pipes located on the three side walls are communicated with each other.
7. The hot-air dry dewaxing system of claim 1, wherein the wax collecting tank comprises th, second and third filtering sub-tanks, the th, second and third filtering sub-tanks are arranged in sequence, a th partition plate is arranged between the th and second filtering sub-tanks, a th filter screen is embedded in the th partition plate, a second partition plate is arranged between the second and third filtering sub-tanks, a second filter screen is embedded in the second partition plate, a filter basket is arranged in the th filtering sub-tank, the basket wall of the filter basket consists of a third filter screen, the end of the wax discharge channel is located above the filter basket, fluid wax passes through the th, second and third filtering sub-tanks from the wax discharge channel in sequence, and the third filtering sub-tank is led to the wax pattern workshop through a pipeline.
8. The hot air dry dewaxing system of claim 7, wherein: and a pump body for pumping the fluid wax is arranged on the pipeline.
9. The hot air dry dewaxing system of claim 7, wherein the apertures of the th filter screen, the second filter screen and the third filter screen are all 140 meshes.
10. The hot air dry dewaxing system of claim 7, further comprising a control device controlling the opening and closing of the side of the chamber body, wherein the moving table is provided with a motor for driving the pulley to rotate, the motor is electrically connected with the control device, the formwork fixing table moves into or out of the dewaxing treatment chamber when the motor is started, and the pump body is electrically connected with the control device, and the fluid wax is fed into the wax formwork workshop from the wax collecting pool when the pump body is started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225886.9A CN110732642A (en) | 2019-12-04 | 2019-12-04 | Hot-air dry dewaxing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225886.9A CN110732642A (en) | 2019-12-04 | 2019-12-04 | Hot-air dry dewaxing system |
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| Publication Number | Publication Date |
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| CN110732642A true CN110732642A (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911225886.9A Pending CN110732642A (en) | 2019-12-04 | 2019-12-04 | Hot-air dry dewaxing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976827A (en) * | 2021-10-29 | 2022-01-28 | 河南平原光电有限公司 | Dry-type dewaxing device and method for gypsum mold investment casting |
| CN115055640A (en) * | 2022-03-11 | 2022-09-16 | 肇庆市高要区金诺金属工艺有限公司 | Waste heat recovery system |
-
2019
- 2019-12-04 CN CN201911225886.9A patent/CN110732642A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976827A (en) * | 2021-10-29 | 2022-01-28 | 河南平原光电有限公司 | Dry-type dewaxing device and method for gypsum mold investment casting |
| CN113976827B (en) * | 2021-10-29 | 2023-09-22 | 河南平原光电有限公司 | Gypsum type investment casting dry dewaxing device and dewaxing method |
| CN115055640A (en) * | 2022-03-11 | 2022-09-16 | 肇庆市高要区金诺金属工艺有限公司 | Waste heat recovery system |
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