Water-soluble wax melting cylinder suitable for investment casting of large structural part wax mould

Abstract

The water-soluble wax melting cylinder comprises a main frame trolley, a wax melting groove is fixedly formed in the top of the main frame trolley, overflow assemblies are arranged on the periphery of the inner side of the wax melting groove respectively, a rotary water spraying water impeller is arranged in the center of the wax melting groove, and the water spraying water impeller is arranged in the middle of the main frame trolley. An auxiliary frame trolley is arranged below the wax melting tank, a water receiving disc is arranged at the top of the auxiliary frame trolley, the interior of the water receiving disc is divided into four filtering cavities located on the periphery through partition plates, and each filtering cavity is aligned to the overflow assembly at the corresponding position; through the device disclosed by the invention, the functions of quickly and automatically melting water-soluble wax of the wax mould of the investment casting large-scale structural member and automatically removing slag by circulating water are realized; the wax melting liquid can be replaced only by closing an upper port of the T-shaped three-way valve and opening the submersible circulating pump to enable the wax melting liquid in the water pan to flow out of another channel, communicated with the outside, of the T-shaped three-way valve, and the wax melting liquid can be replaced more quickly and conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of investment casting titanium alloys, and specifically relates to a water-soluble waxing wax cylinder suitable for investment casting wax patterns of large structural parts. Background Art

[0002] The products of titanium alloy investment castings are getting bigger and bigger in shape and more and more complex in structure. The first step is to prepare the wax mold of the product. For castings with complex inner cavity structures and molds that cannot be cored, water-soluble cores are often used when wax is shot. It has the following advantages: ① The material is environmentally friendly, non-corrosive to the skin of production workers, and has no odor; ② The shrinkage rate is smaller than that of urea cores, only one thousandth, and the size is stable; ③ The wax shooting parameters are stable, and the surface of the production core is smooth; ④ The water-soluble wax contains fibers, has high strength and high toughness, and the surface of the core is not easy to crack ⑤ Low hygroscopicity and easy to store. However, it still has environmental pollution. The zinc oxide it contains is toxic and needs to be treated at a hazardous or special waste treatment point. The existing wax melting tank only puts the casting into the wax melting tank and waits for it to melt naturally. The melting efficiency is low, and the wax melting liquid cannot be reused, so it needs to be replaced to ensure the wax melting efficiency. Therefore, a new type of wax-melting cylinder is developed for large casting structural parts, which uses a new wax-melting method to solve the problems of low melting efficiency and reuse of wax-melting liquid. This is also a common problem that is urgently needed to be solved in the application of investment casting technology for large and complex structural parts.

[0003] At present, for large structural parts, water-soluble wax can better ensure the wax modeling of complex inner cavities. It can not only melt in the wax melting liquid but also has no effect on the wax model. However, in the process of melting water-soluble wax, the selection of the wax melting cylinder is relatively important. It needs to be able to fully contact with the liquid and have a certain water flow to ensure the wax melting efficiency. Otherwise, the long wax melting time increases the time cost, and the wax melting liquid in the wax melting cylinder needs to be reused to reduce production costs. For this reason, the present invention proposes a water-soluble wax melting cylinder suitable for investment casting of wax models of large structural parts. Summary of the invention

[0004] The purpose of the present invention is to provide a water-soluble waxing wax cylinder suitable for investment casting of wax patterns of large structural parts, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water-soluble wax melting cylinder suitable for investment casting of wax molds of large structural parts, comprising a main frame trolley, a wax melting tank is fixedly installed on the top of the main frame trolley, an overflow assembly is respectively arranged on the four sides of the inner side of the wax melting tank, a rotating water sprayer is arranged at the center of the wax melting tank, a sub-frame trolley is arranged below the wax melting tank, a water receiving tray is arranged on the top of the sub-frame trolley, the interior of the water receiving tray is divided into four filter chambers located on the four sides by a partition plate, and each filter chamber is connected to a corresponding The overflow assembly at the position is aligned, and there is a water storage tank in the middle, a filter sponge for filtering is installed in each filter chamber through a filter frame and a support, the filter chambers below the filter sponge are connected with the water storage tank, a submersible circulating pump is installed in the water storage tank, a T-type three-way valve is fixedly installed on the main frame trolley, the submersible circulating pump is connected to an interface of the T-type three-way valve through a pipeline A, the second interface of the T-type three-way valve is connected to a rotary water spray flow promoter through a pipeline B, and the third interface of the T-type three-way valve is connected to a drain pipe.

[0006] Preferably, the overflow assembly includes an inner sleeve of the guide tube located around the inside of the wax melting tank, the inner sleeve of the guide tube is relatively sealed and connected to the wax melting tank through an overflow column sleeve, the bottom end of the inner sleeve of the guide tube extends to the outside of the bottom of the wax melting tank, and the bottom end of the inner sleeve of the guide tube is connected to an overflow pipe, and the overflow pipe extends to the top of the corresponding filter chamber, and a guide sleeve is sleeved on the outer side of each inner sleeve of the guide tube, the guide sleeve is fixed to the wax melting tank through a bracket, and a connecting port that is interconnected is provided between the bottom end of the guide sleeve and the wax melting tank.

[0007] Preferably, the height of the guide sleeve is higher than the height of the inner sleeve of the guide pipe, and the height of the inner sleeve of the guide pipe can be adjusted by lifting and lowering through the overflow column sleeve.

[0008] Preferably, the wax melting tank is made of 304 stainless steel, and the water receiving tray is made of PP plastic.

[0009] Preferably, the bottom of the main frame trolley and the auxiliary frame trolley are both provided with universal wheels for movement.

[0010] Preferably, the wax melting tank and the water receiving tray are both square tank structures with a flat bottom, and the horizontal height of the rotating water spraying flow of the rotating water spraying flow promoter is aligned with the position of the connecting port.

[0011] Compared with the prior art, the beneficial effects of the present invention are: through the device of the present invention, the function of rapid and automatic melting of water-soluble wax in the wax mold of large-scale structural parts in investment casting and automatic slag removal by circulating water is realized;

[0012] Using the filter sponge in the water tray will reduce the impurities in the wax liquid. Regularly cleaning the filter sponge can achieve the effect of reusing the wax liquid. When adding citric acid, it can be added from the water tank and stirred by the motor to ensure its uniformity.

[0013] If you need to replace the wax liquid in the wax melting tank, you only need to close the upper port of the T-type three-way valve, turn on the submersible circulation pump to make the wax liquid in the water receiving tray flow out from the other channel of the T-type three-way valve connected to the outside, and then you can replace the wax liquid, which is faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the side three-dimensional structure of the present invention;

[0016] Figure 3 It is a cross-sectional structural schematic diagram of the present invention;

[0017] Figure 4 It is a schematic cross-sectional structure diagram of the inner sleeve of the flow guide tube of the present invention;

[0018] Figure 5 It is a structural schematic diagram of the water receiving tray of the present invention;

[0019] In the figure: 1. Main frame trolley; 2. Water receiving tray; 3. Wax melting tank; 4. Rotary water sprayer; 5. Guide sleeve; 6. Inner sleeve of guide pipe; 7. Overflow pipe; 8. Filter chamber; 9. Filter sponge; 10. Water storage tank; 11. Submersible circulating pump; 12. T-type three-way valve; 13. Connecting port; 14. Filter frame; 15. Sub-frame trolley; 16. Overflow column sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figures 1 to 5, which is the first embodiment of the present invention, and this embodiment provides a technical solution: a water-soluble wax melting cylinder suitable for investment casting of wax molds of large structural parts, comprising a main frame trolley 1, a wax melting tank 3 is fixedly installed on the top of the main frame trolley 1, and is designed as a square barrel body of 1600x1600x700mm; the material is 304 stainless steel, and an overflow component is respectively arranged on the inner side and the four sides of the wax melting tank 3, and a rotating water sprayer 4 is arranged at the center of the wax melting tank 3, and a sub-frame trolley 15 is arranged below the wax melting tank 3, and a water receiving tray 2 is arranged on the top of the sub-frame trolley 15, which is designed as a square barrel body of 1500x1000x250mm, and the material is PP plastic; the interior of the water receiving tray 2 is divided into four filter chambers 8 located on the four sides by a partition plate, and the partition plate adopts a concave design; and each filter chamber 8 is connected to the overflow at the corresponding position The components are aligned, and there is a water tank 10 in the middle. A filter sponge 9 for filtering is installed in each filter chamber 8 through a filter frame 14 and a support. The filter chambers 8 below the filter sponge 9 are interconnected with the water tank 10. A submersible circulating pump 11 is installed in the water tank 10. The submersible circulating pump 11 is selected with a flow rate of 14000L / H, a model of YTP-14000, a power of 120W, a size of 235x130x150mm, a head of 7m, an adjustable flow rate, and no water protection to prevent dry burning. A T-type three-way valve 12 is fixedly installed on the main frame trolley 1, and the submersible circulating pump 11 is connected to an interface of the T-type three-way valve 12 through a pipeline A, and the second interface of the T-type three-way valve 12 is connected to the rotary water sprayer 4 through a pipeline B, and the third interface of the T-type three-way valve 12 is connected to the drain pipe.

[0023] In the present embodiment, preferably, the overflow assembly includes a guide tube inner sleeve 6 located around the inside of the wax melting tank 3, the guide tube inner sleeve 6 is relatively sealed and connected to the wax melting tank 3 through an overflow column sleeve 16, the bottom end of the guide tube inner sleeve 6 extends to the outside of the bottom of the wax melting tank 3, and the bottom end of the guide tube inner sleeve 6 is connected to an overflow pipe 7, the overflow pipe 7 extends to the top of the corresponding filter chamber 8, and a guide sleeve 5 is sleeved on the outside of each guide tube inner sleeve 6, the guide sleeve 5 is fixed to the wax melting tank 3 through a bracket, and a connecting port 13 that is interconnected is provided between the bottom end of the guide sleeve 5 and the wax melting tank 3. In the present embodiment, preferably, the height of the guide sleeve 5 is higher than the height of the guide tube inner sleeve 6, and the height of the guide tube inner sleeve 6 can be adjusted by the overflow column sleeve 16; the pressure in the wax melting tank 3 can be controlled by adjusting the guide tube inner sleeve 6 up and down, so as to better push the lower layer of granular wax into the inner channel through the filter sponge 9 and flow to the water storage tank. In this embodiment, preferably, the bottom of the main frame trolley 1 and the sub-frame trolley 15 are both provided with universal wheels for movement, in order to facilitate movement. In this embodiment, preferably, the horizontal height of the rotating water jet flow propeller 4 rotating water jet flow propeller is aligned with the position of the connecting port 13, so that the rotating water jet flow propeller 4 ejects water flow to push the granular wax at the bottom of the wax melting tank 3 into the connecting port 13 at the bottom of the guide sleeve 5 on the four sides of the wax melting tank 3 to converge in the direction of the external channel, rise along the external channel, and overflow into the inner sleeve 6 of the guide pipe.

[0024] Process flow: S1: When using the device for the first time, it is necessary to prepare wax liquid. The height of the wax liquid in the wax tank 3 should be flush with the upper edge of the guide sleeve 5. The wax liquid is also added to the water tray 2, so that the volume of the wax liquid in the whole device exceeds the wax tank 3;

[0025] S2: The submersible circulating pump 11 connects the filtered clear liquid to the central rotating water sprayer 4 of the wax melting tank 3 through a pipeline via a T-type three-way valve 12. At the same time, the water-soluble wax melts continuously over time and is divided into two layers of residue according to the density of the residue, one layer sinks to the bottom of the wax melting tank 3, and the other layer floats on the surface of the wax melting liquid.

[0026] S3: The rotating water jet flow propeller 4 ejects water flow to push the granular wax at the bottom of the wax melting tank 3 into the direction of the connecting port 13 at the bottom of the guide sleeve 5 on the four sides of the wax melting tank 3, and converge in the outer channel, rise along the outer channel, and overflow into the inner sleeve 6 of the guide pipe. The water-soluble wax floccules contained in the upper liquid level of the wax melting tank 3 converge in the inner sleeve 6 of the guide pipe, and flow out through the overflow pipe 7 for residue treatment.

[0027] S4: The filter sponge 9 in the water receiving tray 2 filters the liquid flowing into the overflow pipe 7 of the wax melting tank 3. The filtered liquid passes through the reserved gaps at the bottom of all the partitions and converges to the position of the submersible circulation pump 11 in the middle, and forms a circulation through the submersible circulation pump 11.

[0028] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-soluble waxing tank suitable for investment casting of wax patterns of large structural parts, comprising a main frame trolley (1), characterized in that: A wax melting tank (3) is fixedly installed on the top of the main frame trolley (1), an overflow assembly is respectively arranged on the inner side of the wax melting tank (3), a rotating water spraying flow pusher (4) is arranged at the center of the wax melting tank (3), a sub-frame trolley (15) is arranged below the wax melting tank (3), a water receiving tray (2) is arranged on the top of the sub-frame trolley (15), the interior of the water receiving tray (2) is divided into four filter chambers (8) located on the four sides by a partition plate, and each filter chamber (8) is aligned with the overflow assembly at a corresponding position, and a water storage tank (10) is located in the middle, each of the filter chambers (8) A filter sponge (9) for filtering is installed inside through a filter frame (14) and a support member, and a filter chamber (8) located below the filter sponge (9) is communicated with a water storage tank (10). A submersible circulation pump (11) is installed in the water storage tank (10), and a T-type three-way valve (12) is fixedly installed on the main frame trolley (1). The submersible circulation pump (11) is communicated with an interface of the T-type three-way valve (12) through a pipeline A, and a second interface of the T-type three-way valve (12) is communicated with a rotary water spraying flow promoter (4) through a pipeline B, and a third interface of the T-type three-way valve (12) is connected to an emptying pipe.

2. The water-soluble wax cylinder for investment casting of large structural parts wax patterns according to claim 1, characterized in that: The overflow assembly comprises an inner sleeve (6) of the guide tube located around the inside of the wax melting tank (3); the inner sleeve (6) of the guide tube is relatively sealedly connected to the wax melting tank (3) through an overflow column sleeve (16); the bottom end of the inner sleeve (6) of the guide tube extends to the outside of the bottom of the wax melting tank (3); the bottom end of the inner sleeve (6) of the guide tube is connected to an overflow tube (7); the overflow tube (7) extends to the top of the corresponding filter chamber (8); a guide sleeve (5) is sleeved on the outside of each inner sleeve (6); the guide sleeve (5) is fixed to the wax melting tank (3) through a bracket; and a connecting port (13) that is interconnected is provided between the bottom end of the guide sleeve (5) and the wax melting tank (3).

3. The water-soluble wax cylinder for investment casting of large structural parts according to claim 2, characterized in that: The height of the flow guide sleeve (5) is higher than the height of the flow guide pipe inner sleeve (6), and the height of the flow guide pipe inner sleeve (6) can be adjusted by lifting and lowering the overflow column sleeve (16).

4. The water-soluble waxing wax cylinder suitable for investment casting of large structural parts wax patterns according to claim 1, characterized in that: The wax melting tank (3) is made of 304 stainless steel, and the water receiving tray (2) is made of PP plastic.

5. The water-soluble waxing cylinder suitable for investment casting of wax patterns of large structural parts according to claim 1, characterized in that: The bottoms of the main frame trolley (1) and the auxiliary frame trolley (15) are both provided with universal wheels for movement.

6. The water-soluble wax cylinder for investment casting of large structural parts according to claim 1, characterized in that: The wax melting tank (3) and the water receiving tray (2) are both square tank structures with a flat bottom, and the horizontal height of the rotating water spraying and propelling flow of the rotating water spraying and propelling device (4) is aligned with the position of the connecting port (13).

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