Wax material recovery processing device

Abstract

The invention discloses a wax material recovery processing device which comprises a first stirring device, a centrifugal device and a second stirring device, the first stirring device is communicated with the centrifugal device through a first pipeline, the centrifugal device is communicated with the second stirring device through a second pipeline, and a steam generator is arranged on the first pipeline. According to the wax material recovery treatment device provided by the invention, through the first stirring device, the centrifugal device and the second stirring device which are integrated together, the wax material for high-temperature alloy precision casting is recovered and treated through the process steps and items of coarse filtration, centrifugation, water distillation and fine filtration, so that the treated wax material can meet the requirement on the purity of the wax material; the wax recycling device is directly used for high-temperature alloy precision casting in a casting factory, the wax recycling efficiency is improved, the occupied space is small, operation is convenient, and the production cost is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of investment casting, and in particular relates to a wax material recovery and processing device. Background Art

[0002] In the investment casting process, the first step is to use model wax to produce wax patterns and runner wax to produce runners. After the wax patterns and runners are formed, the shell is prepared and then dewaxed with high-temperature steam. The dewaxed wax contains a lot of impurities such as water, shell materials, release agents, and other metal salts. Wax recycling equipment can save costs by processing and recycling the wax in the factory.

[0003] In the prior art, for example, a fully enclosed wax material rapid recovery and processing equipment for precision casting disclosed in CN 209632057 U recovers the wax material through a series of slag boiling box, acid boiling box, and primary sedimentation box, and separates the wax liquid in the waste mold shell, and the wax liquid flows into the acid boiling box and the primary sedimentation box. The acid boiling box is used to saponify the wax liquid, and the primary sedimentation box is used to filter the saponified wax liquid. However, for high-temperature alloy precision casting in the investment casting process, the wax material used contains a large amount of filler, making it difficult to recover the wax material by dehydration and precipitation. Therefore, in the process of high-precision alloy precision casting, the wax material is usually recycled as solid waste, and the wax material cannot be recycled at the original factory, which not only brings economic losses, but also brings energy burden. Summary of the invention

[0004] The purpose of the present invention is to provide a wax material recovery and processing device to solve the problem in the prior art that it is difficult to recover the wax material in the process of high-temperature alloy precision casting.

[0005] To this end, the present invention provides a wax material recovery and processing device, comprising a first stirring device, a centrifugal device and a second stirring device, wherein the first stirring device is connected to the centrifugal device through a first pipeline, and the centrifugal device is connected to the second stirring device through a second pipeline, and a steam generator is arranged on the first pipeline.

[0006] Preferably, the first stirring device includes a first stirring tank, a first feeding pipe is arranged on the first stirring tank, a first discharging pipe is arranged at the bottom of the first stirring tank, a first conveying pump is arranged on the first discharging pipe, and a valve is respectively arranged on the first feeding pipe and the first discharging pipe.

[0007] Preferably, a mesh screen is provided in the first feed pipe.

[0008] Preferably, the second stirring device comprises a second stirring tank, the second stirring tank is provided with a second feeding pipe, a second discharging pipe is provided at the bottom of the second stirring tank, and the second discharging pipe is provided with a second delivery pump.

[0009] Preferably, the centrifugal device comprises a centrifuge, one end of the centrifuge is provided with a third feed pipe and a third discharge pipe, and the other end of the centrifuge is provided with a waste outlet.

[0010] Preferably, a waste recovery tank is provided at the waste outlet.

[0011] Preferably, a buffer device is further included, and the buffer device is connected to the second stirring device through a third pipeline.

[0012] Preferably, a filtering device is provided on the third pipeline.

[0013] Preferably, the filtering device comprises a filter, a fourth feed pipe is arranged above the filter, a fourth discharge pipe is arranged below the filter, and a valve is respectively arranged on the fourth feed pipe and the fourth discharge pipe.

[0014] Preferably, the buffer device comprises a buffer tank, a fifth feed pipe is arranged above the buffer tank, and a fifth discharge pipe is arranged at the bottom of the buffer tank.

[0015] Beneficial effects:

[0016] 1. The present invention provides a wax material recovery and processing device, which realizes the process steps of coarse filtration, centrifugation, water distillation and fine filtration through the integrated first stirring device, the centrifugal device and the second stirring device, so as to recover the wax material of high-temperature alloy precision casting, so that the treated wax material can meet the requirements of wax material purity, and can be directly used for high-temperature alloy precision casting in the foundry, thereby improving the recovery efficiency of the wax material, occupying a small space, being easy to operate and saving production costs.

[0017] 2. In the prior art, the wax is generally recovered by dehydration and precipitation. However, for high-temperature alloy precision casting in the investment casting process, the wax used contains a large amount of fillers, making it impossible to recover the wax by conventional methods. The present invention can effectively separate the wax from the fillers by stirring in the first stirring tank and then centrifuging in a centrifuge, thereby improving the purity of the wax, and the ash content is less than 0.02%.

[0018] 3. In the prior art, the dehydration and precipitation methods require a cooking tank and a sedimentation tank, which occupy a large area and the cost of establishing a recovery device in the foundry is high. In the present invention, solid-liquid impurities are separated by centrifugation, and no sedimentation tank is required. The structure is compact and the area occupied is small, thereby saving production costs. The treated wax can be directly recycled in the foundry, and the recovery rate can reach more than 65%. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a wax material recovery and processing device in the present invention.

[0021] Figure 2 It is a structural schematic diagram of a first stirring device of a wax material recovery and processing device in the present invention.

[0022] Figure 3 The figure is a schematic structural diagram of a centrifugal device of a wax material recovery and processing device in the present invention.

[0023] Figure 4 It is a structural schematic diagram of a second stirring device of a wax material recovery and processing device in the present invention.

[0024] Figure 5 The figure is a schematic structural diagram of a filtering device of a wax material recovery and processing device in the present invention.

[0025] Figure 6 The present invention is a schematic structural diagram of a buffer device of a wax material recovery and processing device.

[0026] In the figure: 1-first stirring device, 11-first stirring tank, 12-first feed pipe, 13-first discharge pipe, 14-first delivery pump, 2-second stirring device, 21-second stirring tank, 22-second feed pipe, 23-second discharge pipe, 24-second delivery pump, 3-centrifugal device, 31-centrifuge, 32-third feed pipe, 33-third discharge pipe, 34-waste outlet, 35-waste recovery tank, 4-first pipeline, 5-second pipeline, 6-steam generator, 7-filtering device, 71-filter, 72-fourth feed pipe, 73-fourth discharge pipe, 8-buffer device, 81-buffer tank, 82-fifth feed pipe, 83-fifth discharge pipe, 9-third pipeline. DETAILED DESCRIPTION

[0027] The content of the present invention can be more easily understood by selecting the following detailed description of the preferred implementation method of the present invention and the embodiments included. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the art to which the present invention belongs. When there is a conflict, the definition in this specification shall prevail.

[0028] Embodiment 1:

[0029] like Figure 1 As shown, in this embodiment, a wax material recovery and processing device is provided, including a first stirring device 1, a centrifugal device 3 and a second stirring device 2. The first stirring device 1 is connected to the centrifugal device 3 through a first pipe 4, and the centrifugal device 3 is connected to the second stirring device 2 through a second pipe 5. A steam generator 6 is arranged on the first pipe 4.

[0030] The first stirring device 1 includes a first stirring tank 11, a first feed pipe 12 is provided on the first stirring tank 11, a first discharge pipe 13 is provided at the bottom of the first stirring tank 11, a first delivery pump 14 is provided on the first discharge pipe 13, a valve is provided on each of the first feed pipe 12 and the first discharge pipe 13, and a mesh screen is provided in the first feed pipe 12. The first stirring tank 11 has stirring and heating functions, and is used to stir and heat the material. Among them, the material enters the first stirring tank 11 from the first feed pipe 12 after coarse filtration through the mesh screen, and the first stirring tank 11 stirs and heats the material, so as to improve the efficiency of subsequent centrifugal separation. After stirring and heating, the material is output to the first pipeline 4 through the first discharge pipe 13.

[0031] The second stirring device 2 includes a second stirring tank 21, a second feeding pipe 22 is provided on the second stirring tank 21, a second discharging pipe 23 is provided at the bottom of the second stirring tank 21, and a second delivery pump 24 is provided on the second discharging pipe 23. The second stirring tank 21 has stirring and heating functions, and is used to stir and heat the material. The material enters the second stirring tank 21 through the second feeding pipe 22, and the second stirring tank 21 stirs the material and heats the distilled water.

[0032] The centrifugal device 3 includes a centrifuge 31, one end of which is provided with a third feed pipe 32 and a third discharge pipe 33, and the other end of the centrifuge 31 is provided with a waste outlet 34. A waste recovery tank 35 is provided at the waste outlet 34. The centrifuge 31 performs solid-liquid separation on the material, and the solid part enters the waste recovery tank 35 through the waste outlet 34. The present invention can effectively separate the wax material from the filler by stirring with the first stirring tank 11 and then centrifuging with the centrifuge 31, thereby improving the purity of the wax material, and the ash content is less than 0.02%.

[0033] The buffer device 8 is also included, and the buffer device 8 is connected to the second stirring device 2 through a third pipe 9. The buffer device 8 includes a buffer tank 81, a fifth feed pipe 82 is arranged above the buffer tank 81, and a fifth discharge pipe 83 is arranged at the bottom of the buffer tank 81.

[0034] The third pipeline 9 is provided with a filter device 7. The filter device 7 comprises a filter 71, a fourth feed pipe 72 is provided above the filter 71, a fourth discharge pipe 73 is provided below the filter 71, and a valve is provided on each of the fourth feed pipe 72 and the fourth discharge pipe 73. The filter device 7 is used for fine filtering of materials.

[0035] Working principle: The heated and melted waste wax is fed into the first stirring tank 11 through the first feeding pipe 12, and the mesh screen in the first feeding pipe 12 performs coarse filtration on the waste wax. A demulsifier is added to the first stirring tank 11, and the amount used is 1 / 10,000 to 10 / 10,000 of the waste wax, so as to facilitate better separation of the wax material and the filler. The first stirring tank 11 is stirred at a high speed within the range of 90 degrees to 100 degrees for 1-2 hours to improve the subsequent centrifugal efficiency.

[0036] The wax material is separated into solid and liquid by the centrifuge 31 , the solid part enters the waste recovery tank 35 through the waste discharge port 34 , and the liquid part is discharged through the third discharge pipe 33 and enters the second stirring tank 21 through the second pipeline 5 .

[0037] Flocculant, chelating agent and filter aid are added into the second stirring tank 21, stirred and heated with distilled water. When the temperature of the wax liquid exceeds 120 degrees, the wax liquid is discharged from the second discharge pipe 23, finely filtered through the filtering device 7 and then enters the buffer tank 81 for use.

[0038] The wax recovery device of the present invention can separate the wax from the filler in the process of high-precision alloy precision casting and remove solid impurities through continuous coarse filtration, centrifugal filtration, water distillation and fine filtration steps, so that the treated wax can meet the most stringent requirements of national and international standards for wax purity, that is, the ash content is less than 0.02%, and the recovery rate can reach more than 65%.

[0039] Assuming that a foundry processes 300 tons of wax per year, the average unit price of wax is 25 yuan per kilogram, and the cost savings are 300*65%*25*1000=4.875 million yuan, which can save more than 4 million yuan per year.

[0040] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A wax material recovery and processing device, characterized in that: include: A first stirring device, a centrifugal device and a second stirring device, wherein the first stirring device is connected to the centrifugal device through a first pipeline, and the centrifugal device is connected to the second stirring device through a second pipeline, and a steam generator is arranged on the first pipeline.

2. A wax material recovery and processing device according to claim 1, characterized in that: The first stirring device includes a first stirring tank, a first feeding pipe is arranged on the first stirring tank, a first discharging pipe is arranged at the bottom of the first stirring tank, a first conveying pump is arranged on the first discharging pipe, and a valve is arranged on each of the first feeding pipe and the first discharging pipe.

3. A wax material recovery and processing device according to claim 2, characterized in that: A mesh screen is arranged in the first feeding pipe.

4. A wax material recovery and processing device according to claim 1, characterized in that: The second stirring device comprises a second stirring tank, a second feeding pipe is arranged on the second stirring tank, a second discharging pipe is arranged at the bottom of the second stirring tank, and a second delivery pump is arranged on the second discharging pipe.

5. A wax material recovery and processing device according to claim 1, characterized in that: The centrifugal device comprises a centrifuge, one end of which is provided with a third feed pipe and a third discharge pipe, and the other end of which is provided with a waste discharge port.

6. A wax material recovery and processing device according to claim 5, characterized in that: A waste recovery tank is arranged at the waste discharge port.

7. A wax material recovery and processing device according to claim 1, characterized in that: It also includes a buffer device, which is connected to the second stirring device through a third pipeline.

8. A wax material recovery and processing device according to claim 7, characterized in that: The third pipeline is provided with a filtering device.

9. A wax material recovery and processing device according to claim 8, characterized in that: The filtering device comprises a filter, a fourth feed pipe is arranged above the filter, a fourth discharge pipe is arranged below the filter, and a valve is respectively arranged on the fourth feed pipe and the fourth discharge pipe.

10. The wax material recovery and processing device according to claim 7, characterized in that: The buffer device comprises a buffer tank, a fifth feeding pipe is arranged above the buffer tank, and a fifth discharging pipe is arranged at the bottom of the buffer tank.

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