Purification treatment device for investment casting recovered wax
Through the structure composed of the inner barrel, outer barrel and oil storage barrel, the density difference between water and wax and electrical heating control are used to solve the problems of unknown precipitation of impurities and difficult to control the temperature, and the clear separation of wax liquid and impurities and stable temperature treatment are achieved, and the purification efficiency is improved.
Patent Information
- Application Number
- CN202422428372.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-08
AI Technical Summary
In the existing investment casting recycling wax treatment device, the height of impurity precipitation accumulation is unknown, and the wax material may be mixed, and the wax liquid treatment temperature is difficult to control, which affects the purification effect.
The barrel structure consisting of an inner barrel, an outer barrel and an oil storage barrel is used to fill the inner barrel and the oil storage barrel with thermal oil. The density difference between water and wax is used to make the wax float on the water surface and separate the temperature. The electric heating element is used to control the temperature, and the observation window and wax discharge valve are combined to achieve separation of impurities and wax.
It realizes clear separation between wax liquid and impurities, has stable temperature control and easy operation, avoids impurities being mixed into wax material, and improves purification efficiency.
Smart Images
Figure CN223209434U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of investment casting wax recovery, and specifically relates to an investment casting recovered wax purification treatment device. Background Art
[0002] In investment casting, medium-temperature wax is widely used to create a fusible pattern. When combined with a gating system, this serves as the intermediate carrier for forming the casting cavity. After the mold is complete, the wax pattern and gating system are melted and removed from the cavity via a dewaxing device. This wax can be recycled and reused, primarily for making ingates, runners, and pouring cups, thereby saving costs.
[0003] The general wax recovery processing device heats and melts the wax material, and then allows the impurities in the wax liquid to settle to the bottom of the wax liquid after standing to achieve the purpose of purification. This method has the following disadvantages:
[0004] 1) Impurities sink to the bottom of the wax liquid, but the specific precipitation height of the impurities is unknown. When the wax is released, some impurities may be mixed back into the wax material;
[0005] 2) The wax liquid treatment temperature is difficult to control. When the temperature is too high, the wax liquid convection is disturbed, and when the temperature is too low, the wax liquid becomes viscous and has poor fluidity, both of which will affect the impurity treatment effect.
[0006] Therefore, it is necessary for those skilled in the art to propose a new investment casting recovered wax purification treatment device to more conveniently and thoroughly separate impurities from the recovered wax. Utility Model Content
[0007] The purpose of the utility model is to better separate impurities from recovered wax completely without being affected by the impurity content and the operation process, thereby providing an investment casting recovered wax purification treatment device.
[0008] The technical solution is:
[0009] A device for purifying and treating wax recovered from investment casting comprises a barrel body consisting of an inner barrel, an outer barrel and an oil storage barrel, the oil storage barrel being arranged on the inner side of the outer barrel, the inner barrel being arranged on the inner side of the oil storage barrel, heat transfer oil being filled between the inner barrel and the oil storage barrel, an insulation layer being filled between the oil storage barrel and the outer barrel, an electric heating element for heating the heat transfer oil and a thermocouple for measuring the oil temperature of the heat transfer oil being arranged in the oil storage barrel, an observation window and a wax drain pipe being arranged in the middle of the side wall of the inner barrel, and a sewage drain pipe being arranged at the bottom of the inner barrel, the observation window, wax drain pipe and sewage drain pipe all pass through the oil storage barrel and the outer barrel in sequence and are connected to the outside world, and a wax drain valve and a sewage drain valve are respectively arranged on the wax drain pipe and the sewage drain pipe, and a cover is arranged on the top of the barrel body.
[0010] Preferably, the bottom of the wax drain pipe is higher than the center line of the observation window, and the wax drain pipe forms a certain angle with the axis of the observation window in the radial direction of the barrel body. When in use, water is injected into the inner barrel to the center line of the observation window, which makes it convenient to observe whether the wax liquid is drained during the wax draining process.
[0011] Preferably, an oil filling port is provided on the top of the oil storage barrel, and an oil drain pipe is provided on the bottom. The oil drain pipe passes through the outer barrel and is connected to the outside. An oil drain valve is provided on the oil drain pipe.
[0012] Preferably, the electric heating element is arranged at the bottom of the oil storage barrel, and the electric heating element includes several groups of U-shaped resistance wires or ring-shaped resistance wires, which is conducive to ensuring uniform heating.
[0013] Preferably, a digital temperature controller is further included, which is electrically connected to the thermocouple and the electric heating element. The digital temperature controller collects temperature data and performs heating control according to a set program.
[0014] Preferably, the cover body comprises two semicircular bakelite cover plates, and the two semicircular bakelite cover plates are connected by a hinge.
[0015] Preferably, the wax drain pipe and the sewage drain pipe are wrapped with a heating insulation sleeve, and the heating temperature can be set according to needs.
[0016] Preferably, the inner barrel is made of stainless steel plate, and the diameter of the inner barrel is 800mm-1200mm, the depth is 800mm-1000mm, and the bottom of the inner barrel is a conical structure.
[0017] The present invention also includes other devices or components that can enable a wax recovery purification device for investment casting to be used normally, which are all conventional means in the field. In addition, the devices and components not limited in the present invention all adopt the existing technology in the field.
[0018] The working principle of the utility model is to utilize the principle that the recovered wax and water have different densities and are insoluble in each other, so that the recovered wax can float on the water surface and separate during cooling; utilize the good fluidity of water to facilitate the smooth separation and sinking of impurities; and utilize the physical property of water with a fixed boiling point to stabilize the heating temperature and the treatment process.
[0019] When using the utility model, first close all valves and pour clean tap water into the inner barrel until the water level reaches the center line of the observation window. Then put the recycled wax blocks that need to be processed into the inner barrel, and the wax blocks will float on the water surface; start heating through the electric heating element, set the heating temperature to 110℃~120℃, and keep it warm for 2h~3h, so that the wax blocks melt and mix with the boiling water at the wax-water interface, and the debris settles and falls to the bottom of the water. Adjust the heating temperature to 95℃~98℃, keep it warm and let it stand for 4h~6h, so that the wax liquid separates from the water and floats on the water, and the debris further settles, and the wax liquid purification is completed. Open the wax drain valve and release the wax liquid into the wax storage container for standby; then open the sewage valve to discharge the sewage and debris, and clean the inner barrel.
[0020] Compared with the prior art, the beneficial effects of the present invention are:
[0021] The utility model can make the wax liquid and the water layer distinct, and the impurities sink to the bottom of the water. At this time, all the wax above the water surface can be released without accidentally mixing in impurities. The wax liquid treatment temperature and process are stable and are not affected by the amount of impurities, and has the advantage of strong operability. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model in the embodiment.
[0023] Figure 2 for Figure 1 Top view and partial cross-sectional view. DETAILED DESCRIPTION
[0024] The technology of the utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0025] Example
[0026] like Figures 1-2As shown, this embodiment proposes a device for implementing the investment casting recovery wax purification treatment method described in Example 1, including a digital temperature controller (not shown in the figure) and a barrel body consisting of an inner barrel 1, an outer barrel 2 and an oil storage barrel 3, the oil storage barrel is arranged on the inner side of the outer barrel, the inner barrel is arranged on the inner side of the oil storage barrel, the bottom of the outer barrel is provided with a support leg 7, the space between the inner barrel and the oil storage barrel is filled with heat transfer oil 11, the space between the oil storage barrel and the outer barrel is filled with an insulation layer 10, and the oil storage barrel is provided with an electric heating element for heating the heat transfer oil. The inner barrel has an element 5 and a thermocouple 4 for measuring the temperature of the thermal oil. The middle part of the side wall of the inner barrel is provided with an observation window 12 and a wax drain pipe 13, and the bottom of the inner barrel is provided with a sewage pipe 9. The observation window, wax drain pipe and sewage pipe all pass through the oil storage barrel and the outer barrel in sequence and are connected to the outside world. The wax drain pipe and sewage pipe are respectively provided with a wax drain valve (not shown) and a sewage valve (not shown). The top of the barrel body is provided with a cover 15, which includes two semicircular bakelite cover plates connected by a hinge. The digital thermostat is electrically connected to the thermocouple and the electric heating element, and the digital thermostat collects temperature data and controls the heating according to the set program.
[0027] Specifically, the bottom of the wax drain pipe is higher than the center line of the observation window, and the wax drain pipe forms a 30° angle with the axis of the observation window in the radial direction of the barrel body. When in use, water 17 is injected into the inner barrel to the center line of the observation window, which makes it convenient to observe whether the wax liquid is drained during the wax draining process.
[0028] Specifically, an oil filling port 14 is provided on the top of the oil storage barrel, and an oil drain pipe is provided on the bottom. The oil drain pipe passes through the outer barrel and is connected to the outside. An oil drain valve 6 is provided on the oil drain pipe.
[0029] In this embodiment, the electric heating element is arranged at the bottom of the oil storage barrel, and the electric heating element includes several groups of U-shaped resistance wires, which is conducive to ensuring uniform heating.
[0030] Specifically, the wax drain pipe and the sewage drain pipe are wrapped with a heating and heat-insulating sleeve 8, and the heating temperature can be set according to needs.
[0031] More specifically, the inner barrel is made of stainless steel plate, and the diameter of the inner barrel is 800mm to 1200mm, the depth is 800mm to 1000mm, and the bottom of the inner barrel is a conical structure.
[0032] During use, water is injected into the bottom of the inner barrel, and recovered wax 16 floats on the water.
[0033] The working principle of the utility model is to utilize the principle that the recovered wax and water have different densities and are insoluble in each other, so that the recovered wax can float on the water surface and separate during cooling; utilize the good fluidity of water to facilitate the smooth separation and sinking of impurities; and utilize the physical property of water with a fixed boiling point to stabilize the heating temperature and the treatment process.
[0034] When using the utility model, first close all valves and pour clean tap water into the inner barrel until the water level reaches the center line of the observation window. Then put the recycled wax blocks that need to be processed into the inner barrel, and the wax blocks will float on the water surface; start heating through the electric heating element, set the heating temperature to 110℃~120℃, and keep it warm for 2h~3h, so that the wax blocks melt and mix with the boiling water at the wax-water interface, and the debris settles and falls to the bottom of the water. Adjust the heating temperature to 95℃~98℃, keep it warm and let it stand for 4h~6h, so that the wax liquid separates from the water and floats on the water, and the debris further settles, and the wax liquid purification is completed. Open the wax drain valve and release the wax liquid into the wax storage container for standby; then open the sewage valve to discharge the sewage and debris, and clean the inner barrel.
[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An investment casting wax recovery purification device, characterized by: It includes a barrel body consisting of an inner barrel, an outer barrel and an oil storage barrel, the oil storage barrel is arranged on the inner side of the outer barrel, the inner barrel is arranged on the inner side of the oil storage barrel, the space between the inner barrel and the oil storage barrel is filled with heat transfer oil, the space between the oil storage barrel and the outer barrel is filled with an insulation layer, the oil storage barrel is provided with an electric heating element for heating the heat transfer oil and a thermocouple for measuring the oil temperature of the heat transfer oil, an observation window and a wax drain pipe are provided in the middle of the side wall of the inner barrel, and a sewage pipe is provided at the bottom of the inner barrel, the observation window, wax drain pipe and sewage pipe all pass through the oil storage barrel and the outer barrel in sequence and are connected to the outside world, and the wax drain pipe and sewage pipe are respectively provided with a wax drain valve and a sewage valve, and a cover is provided on the top of the barrel body.
2. The device for purifying recovered investment casting wax according to claim 1, characterized in that: The bottom of the wax drain pipe is higher than the center line of the observation window, and the wax drain pipe forms an angle of 30 to 60 degrees with the axis of the observation window in the radial direction of the barrel body.
3. The device for purifying investment casting recovered wax according to claim 1, characterized in that: An oil filling port is provided on the top of the oil storage barrel, and an oil drain pipe is provided on the bottom. The oil drain pipe passes through the outer barrel and is connected to the outside. An oil drain valve is provided on the oil drain pipe.
4. The device for purifying and treating investment casting recovered wax according to claim 1, characterized in that: The electric heating element is arranged at the bottom of the oil storage barrel, and the electric heating element includes a plurality of groups of U-shaped resistance wires or ring-shaped resistance wires.
5. The device for purifying investment casting recovered wax according to claim 1, characterized in that: Also included is a digital thermostat electrically connected to the thermocouple and the electric heating element.
6. The device for purifying investment casting recovered wax according to claim 1, characterized in that: The cover body comprises two semicircular bakelite cover plates, and the two semicircular bakelite cover plates are connected by a hinge.
7. The device for purifying investment casting recovered wax according to claim 1, characterized in that: The wax drain pipe and the sewage drain pipe are wrapped with a heating and heat-insulating sleeve.
8. The device for purifying investment casting recovered wax according to claim 1, characterized in that: The inner barrel is made of stainless steel plate, and the diameter of the inner barrel is 800mm-1200mm, the depth is 800mm-1000mm, and the bottom of the inner barrel is a conical structure.