Rapid pressurizing device for isostatic pressing impregnation process

Abstract

The utility model discloses a quick pressurizing device for isostatic pressing impregnation process, which comprises a booster pump, an air compression air storage tank, an impregnation kettle and a charging mould, the impregnation kettle is provided with a cavity cover capable of being opened and closed, the booster pump is connected with the air compression air storage tank through a pipeline, the air compression air storage tank is connected with the impregnation kettle through a pipeline, and the charging mould is arranged on the cavity cover. A stop valve is arranged between the booster pump and the air compression air storage tank, and a stop valve is arranged between the air compression air storage tank and the dipping kettle; waterproof cover plates, sealing rubber rings and fixing flanges are arranged at the bottom and the top of the charging mold, the charging mold is placed in the dipping kettle, and the fixing flanges are detachably connected with the dipping kettle; when continuous production is carried out through the device, the pressurizing pressure does not need to start from 0 mpa when subsequent products except a first product are pressed, so that the pressurizing time is effectively shortened, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of isostatic pressing devices, in particular to a rapid pressurizing device used in an isostatic impregnation process. Background Art

[0002] Isostatic pressing involves placing the workpiece in a high-pressure vessel and applying uniform pressure from all directions to the workpiece, leveraging the liquid's incompressibility within a certain pressure range and its ability to evenly transmit pressure. Isostatically pressed products, produced through this process, exhibit high density, strength, and uniformity, finding widespread application in a variety of fields, including metallurgy, ceramics, semiconductors, defense, and aerospace.

[0003] Traditional isostatic impregnation process equipment requires increasing the pressure from zero to the required process pressure each time, which takes a long time to build up. This results in a long pressing cycle, low production efficiency, and high production costs. Therefore, the applicant has proposed a rapid pressurization device for isostatic impregnation, which effectively reduces the pressure build-up time, thereby improving production efficiency and reducing production costs. Utility Model Content

[0004] The purpose of the utility model is to provide a rapid pressurizing device for isostatic impregnation process, aiming to improve the problems existing in the existing isostatic impregnation process equipment, in which each pressing requires the pressure to be increased from zero to the required process pressure, which leads to long pressurization time, long molding cycle, low production efficiency and high production cost.

[0005] The utility model is implemented as follows: a rapid pressurizing device for an isostatic impregnation process, comprising a booster pump, an air-compressed gas storage tank, an impregnation kettle and a charging mold, wherein the impregnation kettle has a cavity cover that can be opened and closed, the booster pump is connected to the air-compressed gas storage tank through a pipeline, and the air-compressed gas storage tank is connected to the impregnation kettle through a pipeline, and a shut-off valve is provided between the booster pump and the air-compressed gas storage tank and between the air-compressed gas storage tank and the impregnation kettle; a waterproof cover plate, a sealing rubber ring and a fixing flange are provided at the bottom and top of the charging mold, the charging mold is placed in the impregnation kettle, and the fixing flange is detachably connected to the impregnation kettle.

[0006] Furthermore, the compressed air storage tanks are provided in plurality, each of which is connected to a booster pump via a pipeline; the impregnation kettle is provided with a plurality of air inlets, each of which is connected to an compressed air storage tank via a pipeline.

[0007] Furthermore, the cavity cover of the impregnation kettle is provided with an air outlet, an annular tube is installed in the air outlet, and a pressure gauge is installed on the annular tube.

[0008] Furthermore, the annular tube is connected to a pressure relief pipe, a safety valve is installed on the pressure relief pipe, and a stop valve is provided on the gas path connecting the pressure gauge and the inner cavity of the impregnation kettle and connecting the safety valve and the inner cavity of the impregnation kettle.

[0009] Furthermore, the impregnation kettle is a cylindrical structure, and the cylinder and the cavity cover are both made of stainless steel; the compressed air storage tank is a cylindrical structure and is made of stainless steel.

[0010] Furthermore, the connecting pipe between the booster pump and the compressed air storage tank, and the connecting pipe between the compressed air storage tank and the impregnation kettle are both made of stainless steel pipes.

[0011] Furthermore, the charging mold is a rectangular parallelepiped structure or a cylindrical structure, and the material of the charging mold is polyurethane or rubber.

[0012] Furthermore, the charging mold is provided with a mold cover, the charging mold and the mold cover are provided with meshes of 150-250 meshes, and the mold cover is detachably provided with a lifting lug.

[0013] Furthermore, an annular tube is installed on the compressed air storage tank, the annular tube is connected to the inner cavity of the compressed air storage tank, and a pressure gauge is installed on the annular tube.

[0014] Furthermore, the annular tube is connected to a pressure relief pipe, a safety valve is installed on the pressure relief pipe, and a stop valve is provided on the air path connecting the pressure gauge and the inner cavity of the compressed air storage tank and connecting the safety valve and the inner cavity of the compressed air storage tank.

[0015] The utility model is equipped with a booster pump and a compressed air tank, and a shut-off valve isolates the connection between the impregnation kettle and the compressed air tank, thereby preserving the pressure in the compressed air tank. During continuous production, the utility model does not require the pressure to start from 0 MPa when pressing subsequent products, except for the first product. This effectively reduces the pressure increase time, improves production efficiency, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 1 is a flow chart of the rapid pressurization method of the isostatic impregnation process proposed in Example 2. DETAILED DESCRIPTION

[0018] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0019] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0020] Example 1

[0021] This embodiment provides a rapid pressurization device for isostatic impregnation process, such as Figure 1 As shown, the rapid pressurization device includes a booster pump 1, a compressed air tank 2, an impregnation kettle 3, and a charging mold 4. The impregnation kettle 3 is a cylindrical structure with an openable and closable cavity cover 5. The cylinder or kettle body and cavity cover 5 of the impregnation kettle 3 are both made of stainless steel. The compressed air tank 2 is also a cylindrical structure and made of stainless steel. There are four booster pumps 1 and four compressed air tanks 2, each of which is connected to a booster pump 1 via a stainless steel pipeline. The impregnation kettle 3 is equipped with four air inlets, each of which is connected to a compressed air tank 2 via a stainless steel pipeline. At least one shut-off valve 7 is provided on the air path between the booster pump 1 and the compressed air tank 2, and on the air path between the compressed air tank 2 and the impregnation kettle 3. The specific number and location of the shut-off valves 7 can be adapted according to the structural and functional requirements.

[0022] like Figure 1 As shown, the charging mold 4 is a rectangular or cylindrical structure, and the material of the charging mold 4 is polyurethane or rubber. The bottom and top of the charging mold 4 are both provided with a waterproof cover plate 13, a sealing rubber ring 10, and a fixed flange 12. The charging mold 4 is also provided with a mold cover, and the charging mold 4 and the mold cover are provided with a mesh of 150-250 mesh. During production, the charging mold 4 loaded with material is placed in the impregnation kettle 3, and the fixed flange 12 is detachably connected to the inner cavity wall of the impregnation kettle 3 via a locking structure 14. The mold cover is detachably installed with a lifting lug, which is used to connect to a lifting device or lifting device to facilitate the loading mold 4 to enter and exit the impregnation kettle 3.

[0023] like Figure 1As shown, the chamber cover 5 of the impregnation kettle 3 is provided with an air outlet 11, in which an annular tube 9 is installed. A pressure gauge 6 is mounted on the annular tube 9. This allows workers to accurately determine the pressure in the impregnation kettle 3. The annular tube 9 is connected to a pressure relief pipe, on which a safety valve 8 is mounted. The safety pressure is set by the safety valve 8. When the pressure in the impregnation kettle 3 reaches the safety pressure, the safety valve 8 automatically opens to release the pressure, effectively ensuring production safety. A shut-off valve 7 is provided on the air path connecting the pressure gauge 6 to the inner chamber of the impregnation kettle, and on the air path connecting the safety valve 8 to the inner chamber of the impregnation kettle, to facilitate maintenance and replacement of the pressure gauge 6 and the safety valve 8. The impregnation kettle 3 is also provided with a pressure relief valve. After the production of this product is completed, the pressure relief valve is opened to release the pressure. After the pressure relief is complete, the chamber cover 5 is opened.

[0024] like Figure 1 As shown, the compressed air storage tank 2 is fitted with an annular tube 9 that connects to the inner cavity of the compressed air storage tank 2. A pressure gauge 6 is mounted on the annular tube 9, allowing workers to accurately determine the pressure within the compressed air storage tank 2. This pressure gauge 6 can be an electric contact pressure gauge, electrically connected to the starting circuit of the booster pump 1 and to a corresponding shutoff valve 7, which should be an electrically controlled valve. This allows for automated control of the booster pump 1 and ensures that the pressure within the compressed air storage tank 2 is always within the set range of the electric contact pressure gauge, helping to improve production efficiency. The annular tube 9 is connected to a pressure relief pipe, which is equipped with a safety valve 8, making the use of the compressed air storage tank 2 safer. A shutoff valve 7 is installed in the air path connecting the pressure gauge 6 to the inner cavity of the compressed air storage tank and the safety valve 8 to the inner cavity of the compressed air storage tank, facilitating maintenance and replacement of the pressure gauge 6 and safety valve 8.

[0025] Example 2

[0026] This embodiment provides a rapid pressurization method for an isostatic impregnation process, which is implemented using the rapid pressurization device for an isostatic impregnation process provided in Example 1. Figure 2 As shown, the rapid pressurization method includes the following steps:

[0027] S100, start the booster pump 1 to inflate the compressed air tank 2. When the pressure in the compressed air tank 2 reaches a specified pressure of 150-200 MPa, turn off the booster pump 1 and close the stop valve 7 between the booster pump 1 and the compressed air tank 2.

[0028] S200: Install and tighten the fixing flange 12 at the bottom of the charging mold 4. Add the material into the charging mold 4, gently vibrating it to firm the material. After installation, install the waterproof cover 13, sealing rubber ring 10, and fixing flange 12 on the top. Finally, install the mold gland and lifting lugs. After loading, hoist the filled charging mold 4 into the impregnation kettle 3 filled with liquid medium and close the chamber cover 5 to seal the interior of the impregnation kettle 3.

[0029] S300, open the corresponding stop valves, pressurize the impregnation kettle 3 through the compressed air storage tank 2, and start the booster pump 1. After the required process pressure is reached in the impregnation kettle 3, turn off the booster pump 1 and maintain the pressure for a certain period of time.

[0030] S400: Close the stop valve 7 at the air inlet of the impregnation kettle 3, open the pressure relief valve, open the cavity cover 5 after pressure relief is completed, and remove the charging mold 4. After removing the charging mold 4, open the fixing flange 12 at the bottom thereof and remove the finished product from the charging mold 4.

[0031] S500, repeat steps S200-S400 to press the next product.

[0032] In summary, the utility model is provided with a booster pump 1 and an air-compressed gas storage tank 2, and the connection between the impregnation kettle 3 and the air-compressed gas storage tank 2 is separated by a stop valve 7, thereby preserving the pressure in the air-compressed gas storage tank 2. When continuous production is carried out through the utility model, except for the first product, the pressurization pressure does not need to start from 0 MPa when the subsequent products are pressed, which effectively reduces the pressurization time, improves production efficiency, and reduces production costs. When used, the utility model reduces the time for pressurizing the air-compressed gas storage tank 2, and also reduces the pressure and operation time required by the booster pump 1, which greatly reduces the production cost while effectively ensuring the service life of the equipment. In addition, the utility model is provided with multiple groups of air-compressed gas storage tanks 2 and booster pumps 1, and uses multiple groups of pressurized air-compressed gas storage tanks 2 to pressurize the impregnation kettle 3 at the same time, which greatly shortens the pressurization time required for the impregnation kettle 3 in the conventional process, further improving production efficiency.

[0033] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A rapid pressurizing device for isostatic impregnation process, characterized in that: The invention comprises a booster pump, an air-compressed gas tank, an impregnation kettle and a charging mould. The impregnation kettle has a cavity cover that can be opened and closed. The booster pump is connected to the air-compressed gas tank through a pipeline, and the air-compressed gas tank is connected to the impregnation kettle through a pipeline. A stop valve is provided between the booster pump and the air-compressed gas tank, and between the air-compressed gas tank and the impregnation kettle. The bottom and top of the charging mould are provided with a waterproof cover plate, a sealing rubber ring and a fixed flange. The charging mould is placed in the impregnation kettle, and the fixed flange is detachably connected to the impregnation kettle.

2. A rapid pressurizing device for isostatic impregnation process according to claim 1, characterized in that: There are multiple compressed air storage tanks, each of which is connected to a booster pump through a pipeline; the impregnation kettle is provided with multiple air inlets, each of which is connected to an compressed air storage tank through a pipeline.

3. The rapid pressurizing device for isostatic impregnation process according to claim 1, characterized in that: The cavity cover of the impregnation kettle is provided with an air outlet, an annular tube is installed in the air outlet, and a pressure gauge is installed on the annular tube.

4. A rapid pressurizing device for isostatic impregnation process according to claim 3, characterized in that: The annular tube is connected to a pressure relief pipe, a safety valve is installed on the pressure relief pipe, and a stop valve is provided on the gas path connecting the pressure gauge and the inner cavity of the dipping kettle and connecting the safety valve and the inner cavity of the dipping kettle.

5. The rapid pressurizing device for isostatic impregnation process according to claim 1, characterized in that: The impregnation kettle is a cylindrical structure, and the cylinder and cavity cover are both made of stainless steel; the compressed air storage tank is a cylindrical structure and is made of stainless steel.

6. The rapid pressurizing device for isostatic impregnation process according to claim 5, characterized in that: The connecting pipe between the booster pump and the compressed air storage tank, and the connecting pipe between the compressed air storage tank and the impregnation kettle are both made of stainless steel pipes.

7. The rapid pressurizing device for isostatic impregnation process according to claim 1, characterized in that: The charging mold is a rectangular parallelepiped structure or a cylindrical structure, and the material of the charging mold is polyurethane or rubber.

8. The rapid pressurizing device for isostatic impregnation process according to claim 1, characterized in that: The charging mold is also provided with a mold cover, and the charging mold and the mold cover are provided with meshes of 150-250 meshes, and the mold cover is detachably provided with a lifting lug.

9. The rapid pressurizing device for isostatic impregnation process according to claim 1, characterized in that: An annular tube is installed on the compressed air storage tank, the annular tube is connected to the inner cavity of the compressed air storage tank, and a pressure gauge is installed on the annular tube.

10. The rapid pressurizing device for isostatic impregnation process according to claim 9, characterized in that: The annular tube is connected to a pressure relief pipe, a safety valve is installed on the pressure relief pipe, and a stop valve is provided on the air path connecting the pressure gauge and the inner cavity of the compressed air storage tank and connecting the safety valve and the inner cavity of the compressed air storage tank.

Images