Vacuum sintering wax steam dewaxing device and dewaxing process

Abstract

A vacuum sintering wax steam dewaxing device and a dewaxing process relate to the technical field of wax steam dewaxing, comprising a tank body, an air inlet in the middle of the tank body is provided with an air inlet pipe, an air outlet at the top of the tank body is provided with an air outlet pipe, the inner end of the air inlet pipe extends to the inner cavity of the tank body, the inner end of the air inlet pipe is provided with a spray assembly, the inner cavity of the tank body is provided with a metal plate at a position below the spray assembly, a fixing column is provided on the side of the metal plate, the metal plate is fixed to the inner wall of the tank body by the fixing column, and a bionic lung is provided on the upper part of the inner wall of the tank body; the present invention uses a U-shaped nozzle, a nozzle one, a nozzle two, a bionic lung and a spray assembly arranged in the tank body, as well as a metal plate and a gear pump in coordination, so as to fully contact and mix the wax with the vacuum oil, thereby achieving the purpose of dewaxing, and the vacuum oil can be regularly replaced by using structures such as an oil change pipe and a gear pump in coordination, without the need to disassemble the pipeline multiple times, thereby improving the dewaxing rate and reducing the risk of leakage.

Description

Technical Field

[0001] The invention relates to the technical field of wax steam dewaxing, in particular to a vacuum sintering wax steam dewaxing device and a dewaxing process. Background Art

[0002] The current vacuum sintering dewaxing process mostly adopts the principle of low-temperature dewaxing. During the dewaxing process, the existing dewaxing device is more likely to cause wax blockage in the cooling tube cavity, and needs to be disassembled and cleaned before it can be used again, which brings inconvenience to the dewaxing work and reduces the efficiency of dewaxing. In addition, the pipeline needs to be disassembled multiple times when cleaning, which easily causes the risk of leakage. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the purpose of the present invention is to provide a vacuum sintering wax steam dewaxing device. The present invention arranges a U-shaped nozzle, nozzle one and nozzle two, as well as bionic lungs and oil change pipes in a tank body, and utilizes the principle of like dissolves like to fully contact and mix the wax and vacuum oil. The vacuum oil can be replaced regularly without disassembling the pipeline multiple times, so as to achieve effective dewaxing, increase the dewaxing rate, and reduce the risk of leakage.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme:

[0005] A vacuum sintering wax steam dewaxing device comprises a tank body, an air inlet in the middle of the tank body is provided with an air inlet pipe, an air outlet at the top of the tank body is provided with an air outlet pipe, the inner end of the air inlet pipe extends to the inner cavity of the tank body, the inner end of the air inlet pipe is provided with an injection assembly, a metal plate is provided at a position below the injection assembly in the inner cavity of the tank body, a fixing column is provided on the side of the metal plate, the metal plate is fixed to the inner wall of the tank body through the fixing column, a bionic lung is provided on the upper part of the inner wall of the tank body, a pipe one is provided at the outlet at the bottom of the tank body, a valve one is provided on the pipe one, and the outer part of the pipe one A gear pump is provided at the side end, and a pipe 2 is provided on the outside of the gear pump. The top end of the pipe 2 passes through the through hole in the middle of the tank body and extends to the inner cavity of the tank body. A U-shaped nozzle is provided at the top end of the pipe 2, and the U-shaped nozzle is located between the bionic lung and the metal plate. The upper arm of the U-shaped nozzle is provided with a nozzle 1 opening upward, and the lower arm of the U-shaped nozzle is provided with a nozzle 2 opening downward. An oil change pipe is provided in the middle of the pipe 2, and an oil change valve is provided on the oil change pipe. Valve 2 is provided in the middle of the pipe 2 above the oil change pipe, and the gear pump and the bionic lung are electrically connected to an external power supply respectively.

[0006] The top and bottom of the tank body are both arched structures, and the bottom of the inner cavity of the tank body is located below the metal plate to form a vacuum oil chamber for placing vacuum oil.

[0007] The metal plate is a circular plate-shaped structure, the outer diameter of the metal plate is smaller than the inner diameter of the inner wall of the tank body, the number of the fixing columns is at least three, and the three fixing columns are arranged along the circumferential direction on the circumferential surface outside the metal plate, a gap is formed between the metal plate, the fixing columns and the inner wall of the tank body, and the upper surface of the metal plate is conical or arc-shaped.

[0008] An observation port 1 is arranged on the outer side of the tank body, and the observation port 1 corresponds to the metal plate.

[0009] An observation port 2 is arranged on the outer side of the tank body, and the observation port 2 corresponds to the vacuum oil chamber.

[0010] The injection assembly is composed of a hydraulic injector, and the hydraulic injector is electrically connected to an external power source.

[0011] The vacuum sintering wax steam dewaxing process uses the vacuum sintering wax steam dewaxing device to perform dewaxing, and specifically includes the following steps:

[0012] ① Injection: The wax vapor passes through the injection assembly at the end of the pipe from the air inlet pipe. Under the action of the hydraulic ejector, the wax vapor is decomposed into small droplets with a very small diameter, and the wax droplets in mist are sprayed onto the metal plate;

[0013] ②Mutability: Wax droplets enter the vacuum oil in the lower vacuum oil chamber from the gap between the metal plate and the inner wall of the tank, and the wax is dissolved in the vacuum oil by the principle of like dissolving like;

[0014] ③Circulation: Under the action of the gear pump, the vacuum oil flows along the pipe 1 into the pipe 2, and the wax vapor in the tank is sprayed through the downward nozzle 2 to dissolve the wax in the oil. The upward nozzle 1 captures the escaped wax vapor and cleans the wax attached to the upper bionic lung, so that the vacuum oil repeatedly circulates in the pipe 1, the pipe 2 and the tank to dissolve the wax, thereby completing the dewaxing process;

[0015] ④ Filtration: During the above dewaxing process, the bionic lung can filter the gas to further remove the wax;

[0016] ⑤Observation: Observe the wax accumulation height on the metal plate and monitor the condition inside the tank through observation port 1, and observe the vacuum oil saturation through observation port 2;

[0017] ⑥ Oil change: When the vacuum oil is saturated, close valve 2, open the oil change valve, and complete the oil change operation through the gear pump and oil change pipe.

[0018] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0019] The vacuum sintering wax steam dewaxing device described in the present invention achieves the purpose of dewaxing by using the U-shaped nozzle, nozzle one, nozzle two, bionic lung and injection assembly, metal plate and gear pump arranged in the tank body, and utilizing the principle of like dissolves like to fully contact and mix the wax and vacuum oil. In addition, the vacuum oil can be replaced regularly by using the oil change pipe, gear pump and other structures without disassembling the pipeline many times, thereby improving the dewaxing rate and reducing the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the vacuum sintering wax steam dewaxing device of the present invention;

[0021] Figure 2 A side view of the internal structure of the vacuum sintering wax steam dewaxing device of the present invention;

[0022] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A;

[0023] In the figure: tank body 1, bionic lung 2, air outlet pipe 3, air inlet pipe 4, observation port 1 5, observation port 2 6, valve 1 7, pipeline 1 8, gear pump 9, oil change pipe 10, oil change valve 11, valve 2 12, pipeline 2 13, fixing column 14, vacuum oil chamber 15, metal plate 16, U-shaped nozzle 17, nozzle 1 18, nozzle 2 19, injection assembly 20. DETAILED DESCRIPTION

[0024] The present invention can be explained in detail by the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0025] Combined with Figures 1 to 3The vacuum sintering wax vapor dewaxing device comprises a tank body 1, an air inlet in the middle of the tank body 1 is provided with an air inlet pipe 4, an air outlet at the top of the tank body 1 is provided with an air outlet pipe 3, the inner end of the air inlet pipe 4 extends to the inner cavity of the tank body 1, the inner end of the air inlet pipe 4 is provided with an injection assembly 20, a metal plate 16 is provided in the inner cavity of the tank body 1 below the injection assembly 20, a fixing column 14 is provided on the side of the metal plate 16, the metal plate 16 is fixed to the inner wall of the tank body 1 through the fixing column 14, a bionic lung 2 is provided on the upper part of the inner wall of the tank body 1, a pipe 8 is provided at the outlet at the bottom of the tank body 1, a valve 7 is provided on the pipe 8, and a valve 7 is provided on the outer end of the pipe 8 There is a gear pump 9, and a pipe 13 is provided on the outside of the gear pump 9. The top of the pipe 13 passes through the through hole in the middle of the tank body 1 and extends to the inner cavity of the tank body 1. The top of the pipe 13 is provided with a U-shaped nozzle 17, and the U-shaped nozzle 17 is located between the bionic lung 2 and the metal plate 16. The upper arm of the U-shaped nozzle 17 is provided with a nozzle 18 opening upward, and the lower arm of the U-shaped nozzle 17 is provided with a nozzle 19 opening downward. The middle of the pipe 13 is provided with an oil change pipe 10, and the oil change valve 11 is provided on the oil change pipe 10. The middle of the pipe 13 is provided with a valve 12 above the oil change pipe 10. The gear pump 9 and the bionic lung 2 are electrically connected to an external power supply respectively.

[0026] The top and bottom of the tank body 1 are both arched structures, and the bottom of the inner cavity of the tank body 1 is located below the metal plate 16 to form a vacuum oil chamber 15 for placing vacuum oil.

[0027] The metal plate 16 is a circular plate-like structure, the outer diameter of the metal plate 16 is smaller than the inner diameter of the inner wall of the tank body 1, the number of the fixing columns 14 is at least three, and the three fixing columns 14 are arranged along the circumferential direction on the circumferential surface outside the metal plate 16, a gap is formed between the metal plate 16, the fixing columns 14 and the inner wall of the tank body 1, and the upper surface of the metal plate 16 is conical or arc-shaped.

[0028] An observation port 5 is provided on the outer side of the tank body 1 , and the observation port 5 corresponds to the metal plate 16 .

[0029] The outer side surface of the tank body 1 is provided with an observation port 2 6 , and the observation port 2 6 corresponds to the vacuum oil chamber 15 .

[0030] The injection assembly 20 is composed of a hydraulic injector, and the hydraulic injector is electrically connected to an external power source.

[0031] A vacuum sintering wax vapor dewaxing process specifically includes the following steps: wax vapor passes through the injection assembly 20 at the end of the pipe from the air inlet pipe 4, and the wax vapor is decomposed into small droplets with very small diameters, which are in a mist state, so that the wax is more conducive to dissolving in vacuum oil; under the cooling and injection action of the injector, the wax-containing droplets are sprayed on the metal plate 16 and enter the lower vacuum oil chamber 15 from the gap; the metal plate 16 can prevent the wax vapor injection from causing impact on the vacuum oil; the wax is dissolved in the vacuum oil by using the principle of like dissolves like; then, under the action of the gear pump 9, the vacuum oil is made to enter the pipeline 1 8 and the pipeline 2 13; the wax vapor in the tank body 1 is sprayed by the downward nozzle 2 19, so that the wax is dissolved in the oil; the escaping wax vapor and the wax attached to the upper bionic lung 2 are captured by the upward nozzle 18, so that the vacuum oil is repeatedly circulated in the pipeline 1 8, the pipeline 2 and the tank body 1 to dissolve the wax, thereby completing the dewaxing process;

[0032] During the above-mentioned dewaxing process, the bionic lung 2 can filter the gas to further remove wax. The observation port 1 5 is used to observe the wax accumulation height on the metal plate 16 and monitor the condition inside the tank body 1. The observation port 2 6 is used to observe the saturation of the vacuum oil. When the vacuum oil is saturated, the valve 2 12 is closed, the oil change valve 11 is opened, and the oil change operation is completed through the gear pump 9 and the oil change pipe 10. The upper surface of the metal plate 16 is set to a cone or an arc shape, which is more conducive to the wax droplets sprayed on the metal plate 16 to quickly flow down along the gap and merge with the vacuum oil.

[0033] In the present invention, the bionic lung plays the role of filtering gas. The bionic lung is a prior art and can adopt a novel bionic gas reaction device such as the one with application number 2016108498014. Of course, the bionic lung can also adopt a gas filter or gas purifier that can filter and purify gas in the prior art.

[0034] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and approaches to specifically implement the technical solution. The above is only a preferred implementation scheme of the present invention, but technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, and all of them are within the scope of protection of the present invention.

Claims

1. A vacuum sintering wax steam dewaxing device, comprising a tank body (1), an air inlet in the middle of the tank body (1) is provided with an air inlet pipe (4), and an air outlet at the top of the tank body (1) is provided with an air outlet pipe (3), wherein: The inner end of the air intake pipe (4) extends to the inner cavity of the tank body (1), the inner end of the air intake pipe (4) is provided with an injection assembly (20), the inner cavity of the tank body (1) is provided with a metal plate (16) at a position below the injection assembly (20), the side of the metal plate (16) is provided with a fixing column (14), the metal plate (16) is fixed to the inner wall of the tank body (1) through the fixing column (14), the upper part of the inner wall of the tank body (1) is provided with a bionic lung (2), the outlet at the bottom of the tank body (1) is provided with a pipe 1 (8), the pipe 1 (8) is provided with a valve 1 (7), the outer end of the pipe 1 (8) is provided with a gear pump (9), the outer side of the gear pump (9) is provided with a pipe 2 (13), the pipe 2 ( The top of the pipe (13) passes through the through hole in the middle of the tank (1) and extends to the inner cavity of the tank (1). The top of the pipe (13) is provided with a U-shaped nozzle (17). The U-shaped nozzle (17) is located between the bionic lung (2) and the metal plate (16). The upper arm of the U-shaped nozzle (17) is provided with a nozzle (18) with an opening facing upward. The lower arm of the U-shaped nozzle (17) is provided with a nozzle (19) with an opening facing downward. The middle of the pipe (13) is provided with an oil change pipe (10). The oil change pipe (10) is provided with an oil change valve (11). The middle of the pipe (13) is provided with a valve (12) located above the oil change pipe (10). The gear pump (9) and the bionic lung (2) are respectively electrically connected to an external power supply. The top and bottom of the tank body (1) are both arched structures, and the bottom of the inner cavity of the tank body (1) is located below the metal plate (16) to form a vacuum oil chamber (15) for placing vacuum oil; The metal plate (16) is a circular plate-shaped structure; the outer diameter of the metal plate (16) is smaller than the inner diameter of the inner wall of the tank body (1); the number of the fixing columns (14) is at least three, and the three fixing columns (14) are arranged along the circumferential direction on the circumferential surface outside the metal plate (16); a gap is formed between the metal plate (16), the fixing columns (14) and the inner wall of the tank body (1); and the upper surface of the metal plate (16) is conical or arc-shaped.

2. A vacuum sintering wax steam dewaxing device according to claim 1, characterized in that: An observation port 1 (5) is provided on the outer side surface of the tank body (1), and the observation port 1 (5) corresponds to the metal plate (16).

3. A vacuum sintering wax steam dewaxing device according to claim 1, characterized in that: The outer side surface of the tank body (1) is provided with an observation port 2 (6), and the observation port 2 (6) corresponds to the vacuum oil chamber (15).

4. A vacuum sintering wax steam dewaxing device according to claim 1, characterized in that: The injection assembly (20) is composed of a hydraulic injector, and the hydraulic injector is electrically connected to an external power source.

5. A vacuum sintering wax steam dewaxing process, characterized in that: The dewaxing process uses the empty sintered wax steam dewaxing device as described in any one of claims 1 to 4 to carry out dewaxing, and specifically comprises the following steps: ① Injection: wax vapor passes through the injection assembly (20) at the end of the pipe from the air inlet pipe (4), and under the action of the hydraulic ejector, the wax vapor is decomposed into small droplets with a very small diameter, and the wax-containing droplets in a mist form are sprayed onto the metal plate (16); ②Mutual dissolution: wax droplets enter the vacuum oil in the lower vacuum oil chamber (15) from the gap between the metal plate (16) and the inner wall of the tank body (1), and the wax is dissolved in the vacuum oil by using the principle of like dissolves like; ③ Circulation: Under the action of the gear pump (9), the vacuum oil flows along the pipe 1 (8) into the pipe 2 (13), and the wax vapor in the tank body (1) is sprayed through the downward spray head 2 (19), so that the wax is dissolved in the oil. The escaping wax vapor is captured and the wax attached to the upper bionic lung (2) is cleaned through the upward spray head 1 (18), so that the vacuum oil repeatedly circulates in the pipe 1 (8), the pipe 2 (13) and the tank body (1) to dissolve the wax, thereby completing the dewaxing process; ④ Filtration: During the above dewaxing process, the bionic lung (2) can filter the gas to further remove the wax; ⑤Observation: Observe the wax accumulation height on the metal plate (16) through the observation port 1 (5) and monitor the condition inside the tank (1); observe the vacuum oil saturation through the observation port 2 (6); ⑥ Oil change: When the vacuum oil is saturated, close valve 2 (12), open the oil change valve (11), and complete the oil change operation through the gear pump (9) and the oil change pipe (10).

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