Vacuum pressure impregnation process equipment for graphite heat exchangers

Abstract

The utility model relates to graphite heat exchanger vacuum pressure impregnation process equipment belongs to graphite heat exchanger vacuum pressure impregnation technical field, including impregnation jar and equipment frame, the equipment frame outside is provided with the pretreatment assembly for impregnant and material pretreatment, the pretreatment assembly includes the treatment jar fixedly connected in the equipment frame top, cleaning tank and drying box, the top of treatment jar is fixedly connected with drive motor, the output shaft of drive motor is fixedly connected with stirring shaft, the left and right sides of treatment jar inner wall all are fixedly connected with electric heating tube, the bottom of confluence box is fixedly connected with shower nozzle, the top of drying box is fixedly connected with fan, the inboard of drying box is fixedly connected with air heating pipe. This graphite heat exchanger vacuum pressure impregnation process equipment, through setting up pretreatment assembly, finally, to impregnant and material pretreatment, thereby shortens technological process time -consuming, better satisfy production demand.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pressure impregnation technology for graphite heat exchangers, specifically to vacuum pressure impregnation process equipment for graphite heat exchangers. Background Technology

[0002] A graphite heat exchanger is a special type of heat exchanger made of artificial graphite. It utilizes graphite's excellent thermal conductivity and outstanding corrosion resistance to handle highly corrosive media that most other metal materials cannot handle.

[0003] Vacuum pressure impregnation equipment is required in the production of graphite heat exchangers. Chinese utility model patent CN218872663U discloses a novel vacuum pressure impregnation device, including a housing. A first partition is symmetrically fixedly connected inside the housing. A rotating rod and a third rotating shaft are rotatably connected inside the housing, both rotatably connected to the first partition. Ropes are wound around the outer sides of both the rotating rod and the third rotating shaft. A limiting plate is slidably connected inside the first partition, and a movable plate is fixedly connected to the outer side of the limiting plate. The ropes are fixedly connected to the limiting plate. This utility model allows the rotating rod to lift the material via the ropes after impregnation, avoiding manual operation by workers, reducing labor intensity, improving work efficiency, and increasing the practicality of the device.

[0004] This utility model uses ropes to lift materials, avoiding manual operation by workers. However, existing vacuum pressure impregnation equipment does not have the function of pre-treatment of impregnating agent and materials, resulting in a long process time and failing to meet production needs. Therefore, a vacuum pressure impregnation process equipment for graphite heat exchangers is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a vacuum pressure impregnation process equipment for graphite heat exchangers, which has advantages such as impregnation agent and material pretreatment, and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A vacuum pressure impregnation process device for graphite heat exchangers includes an impregnation tank and a device frame, wherein a pretreatment component for pretreatment of impregnating agent and materials is provided outside the device frame;

[0008] The pretreatment assembly includes a treatment tank, a cleaning chamber, and a drying chamber fixedly connected to the top of the equipment frame. A drive motor is fixedly connected to the top of the treatment tank, and a stirring shaft is fixedly connected to the output shaft of the drive motor. Electric heating tubes are fixedly connected to both the left and right sides of the inner wall of the treatment tank. A water storage tank is fixedly connected to the left side of the equipment frame, and a high-pressure water pump is fixedly connected to the top of the water storage tank. A manifold is fixedly connected to the inner top wall of the cleaning chamber, and a nozzle is fixedly connected to the bottom of the manifold. A fan is fixedly connected to the top of the drying chamber, and an air heating tube is fixedly connected to the inner side of the drying chamber.

[0009] Furthermore, a top cover is fixedly installed on the top of the impregnation tank, and a vacuum pump and an air pump are respectively installed on the left and right sides of the impregnation tank.

[0010] Furthermore, a filter screen is fixedly connected to the inside of the cleaning tank, and a circulation pipe with one end penetrating through and extending into the water storage tank is fixedly connected to the bottom of the cleaning tank.

[0011] Furthermore, both the washing box and the drying box have hinged sealing doors on their front sides, and the sealing doors are fixedly connected to the outside of the doors.

[0012] Furthermore, the inlet and outlet pipes of the high-pressure water pump are connected to the water storage tank and the manifold box, respectively, and an exhaust pipe is fixedly connected to the outside of the drying box.

[0013] Furthermore, a conveying pipe is fixedly connected to the back of the processing tank, and a solenoid valve is fixedly connected to the outside of the conveying pipe.

[0014] Furthermore, feed pipes are fixedly connected to the left and right sides of the top of the processing tank, and several stirring rods are fixedly connected to the outer surface of the stirring shaft.

[0015] Furthermore, the impregnation tank is located inside the equipment frame, which is a steel structure.

[0016] Compared with the prior art, this utility model provides a vacuum pressure impregnation process equipment for graphite heat exchangers, which has the following beneficial effects:

[0017] 1. This graphite heat exchanger vacuum pressure impregnation process equipment, through the inclusion of pretreatment components, including a drive motor, stirring shaft, and electric heating tube, preheats and stirs the impregnating agent to reduce viscosity, eliminate air bubbles entrained in the resin, and ensure optimal flowability and permeability. Simultaneously, a water storage tank, high-pressure water pump, manifold, and nozzles use high-pressure water flow to remove all contaminants such as oil, dust, metal shavings, and old sealing materials from the material's pores and surface, ensuring effective impregnation. Furthermore, a fan and air heating tube provide hot air drying to ensure complete drying and prevent residual moisture from severely affecting resin curing, thus guaranteeing the curing effect. Finally, the pretreatment of the impregnating agent and material shortens the process time and better meets production needs.

[0018] 2. This graphite heat exchanger vacuum pressure impregnation process equipment, through the setting of a filter interception screen and circulation pipe, can play the role of receiving materials during material cleaning, while intercepting oil, dust, metal shavings, old sealing materials, etc., making cleaning convenient. Finally, the filtered water is introduced back into the water storage tank for recycling, achieving the effect of water saving. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural view of the processing tank of this utility model;

[0021] Figure 3 This is a front view of the structure of this utility model.

[0022] In the diagram: 1. Impregnation tank; 2. Equipment frame; 3. Processing tank; 4. Drive motor; 5. Stirring shaft; 6. Electric heating element; 7. Cleaning tank; 8. Water storage tank; 9. High-pressure water pump; 10. Manifold; 11. Nozzle; 12. Drying box; 13. Fan; 14. Air heating element; 15. Filter screen; 16. Circulation pipe; 17. Sealing door; 18. Conveying pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 3The graphite heat exchanger vacuum pressure impregnation process equipment in this embodiment includes an impregnation tank 1 and an equipment frame 2. A pretreatment component for pretreatment of impregnating agent and material is provided outside the equipment frame 2. The pretreatment components include a treatment tank 3, a cleaning tank 7, and a drying chamber 12, all fixedly connected to the top of the equipment frame 2. A drive motor 4 is fixedly connected to the top of the treatment tank 3, and a stirring shaft 5 is fixedly connected to the output shaft of the drive motor 4. Electric heating tubes 6 are fixedly connected to both the left and right sides of the inner wall of the treatment tank 3. A water storage tank 8 is fixedly connected to the left side of the equipment frame 2, and a high-pressure water pump 9 is fixedly connected to the top of the water storage tank 8. A manifold box 10 is fixedly connected to the inner top wall of the cleaning tank 7, and a nozzle 11 is fixedly connected to the bottom of the manifold box 10. A fan 13 is fixedly connected to the top of the drying chamber 12, and an air heating tube 14 is fixedly connected to the inner side of the drying chamber 12. The drive motor 4, the stirring shaft 5, and the electric heating tubes 6 can preheat and stir the impregnating agent to reduce its viscosity, eliminate air bubbles entrained in the resin itself, and ensure that its fluidity and permeability reach the optimal state.

[0025] Meanwhile, the water storage tank 8, high-pressure water pump 9, manifold 10 and nozzle 11 use high-pressure water flow to remove all contaminants such as oil, dust, metal shavings, old sealing materials, etc. inside and on the material channel, in order to ensure its impregnation effect.

[0026] In addition, the blower 13 and the air heating pipe 14 can dry the material with hot air to ensure complete drying and avoid residual moisture from seriously affecting the curing of the resin, thus ensuring the curing effect.

[0027] Finally, the impregnating agent and materials are pretreated to shorten the process time and better meet production needs.

[0028] It should be noted that the top of the impregnation tank 1 is fixedly installed with a top cover, and a vacuum pump and an air pump are respectively installed on the left and right sides of the impregnation tank 1. The vacuum pump and the air pump can first degas the inside of the impregnation tank 1 under vacuum and then inject pressure, which can effectively handle materials with complex structures and fine pores, avoid residual air bubbles, and then remove air, moisture and volatile impurities from the pores and winding gaps inside the material. Under high vacuum environment, these gases are removed to the maximum extent, creating a space without air resistance for the subsequent entry of impregnating agent.

[0029] In this embodiment, a filter screen 15 is fixedly connected to the inner side of the cleaning tank 7, and a circulation pipe 16 is fixedly connected to the bottom of the cleaning tank 7, with one end penetrating and extending into the water storage tank 8. By setting up the filter screen 15 and the circulation pipe 16, the filter screen 15 can serve as a container for materials during cleaning, while intercepting oil, dust, metal shavings, old sealing materials, etc., making cleaning easier. Finally, the filtered water is reintroduced into the water storage tank 8 for recycling, achieving the effect of water conservation.

[0030] Specifically, both the washing chamber 7 and the drying chamber 12 are hinged with sealing doors 17 on their front sides. The sealing doors 17 are fixedly connected to the outside of the sealing doors 17. The sealing doors 17 achieve the effect of sealing the openings on the front sides of the washing chamber 7 and the drying chamber 12, thus ensuring the airtightness of the washing chamber 7 and the drying chamber 12.

[0031] It should be noted that the inlet and outlet pipes of the high-pressure water pump 9 are connected to the water storage tank 8 and the manifold box 10, respectively, and an exhaust pipe is fixedly connected to the outside of the drying box 12.

[0032] Specifically, a conveying pipe 18 is fixedly connected to the back of the processing tank 3, and a solenoid valve is fixedly connected to the outside of the conveying pipe 18. The conveying pipe 18 can input the preheated and stirred impregnating agent into the interior of the impregnation tank 1.

[0033] It should be noted that feed pipes are fixedly connected to the left and right sides of the top of the processing tank 3, and several stirring rods are fixedly connected to the outer surface of the stirring shaft 5.

[0034] Specifically, the impregnation tank 1 is located inside the equipment frame 2, which is a steel structure.

[0035] The working principle of the above embodiments is as follows:

[0036] During use, the drive motor 4, stirring shaft 5, and electric heating tube 6 preheat and stir the impregnating agent to reduce viscosity, eliminate air bubbles entrained in the resin, and ensure optimal flowability and permeability. Simultaneously, the water storage tank 8, high-pressure water pump 9, manifold 10, and nozzle 11 draw water from the storage tank 8, pressurize it, and direct it into the manifold 10, then spray it onto the material through the nozzle 11. During this process, high-pressure water is used to remove all contaminants such as oil, dust, metal shavings, and old sealing materials from the material's pores and surface to ensure effective impregnation. The fan 13 and air heating tube 14 further enhance the impregnation effect. Hot air drying is performed to ensure complete drying and prevent residual moisture from severely affecting resin curing, thus ensuring curing effect. After the impregnating agent and material pretreatment are completed, the staff removes the top cover of impregnation tank 1, puts the pretreated material into the impregnation tank 1, and replaces the top cover. Then, the conveying pipe 18 can input the preheated and stirred impregnating agent into the impregnation tank 1. Finally, the vacuum pump and air pump can first degas the inside of impregnation tank 1 under vacuum and then inject pressure, effectively treating materials with complex structures and fine pores, avoiding residual air bubbles, and thus expelling air, moisture and volatile impurities from the pores and winding gaps inside the material.

[0037] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0038] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum pressure impregnation process device for graphite heat exchangers, comprising an impregnation tank (1) and a device frame (2), characterized in that: The equipment frame (2) is provided with a pretreatment component for pretreatment of impregnating agent and material; The pretreatment assembly includes a treatment tank (3), a cleaning tank (7), and a drying tank (12) fixedly connected to the top of the equipment frame (2). A drive motor (4) is fixedly connected to the top of the treatment tank (3), and a stirring shaft (5) is fixedly connected to the output shaft of the drive motor (4). Electric heating tubes (6) are fixedly connected to both the left and right sides of the inner wall of the treatment tank (3). A water storage tank (8) is fixedly connected to the left side of the equipment frame (2). A high-pressure water pump (9) is fixedly connected to the top of the water storage tank (8). A manifold box (10) is fixedly connected to the inner top wall of the cleaning tank (7). A nozzle (11) is fixedly connected to the bottom of the manifold box (10). A fan (13) is fixedly connected to the top of the drying tank (12), and an air heating tube (14) is fixedly connected to the inner side of the drying tank (12).

2. The vacuum pressure impregnation process equipment for graphite heat exchangers according to claim 1, characterized in that: The top of the impregnation tank (1) is fixedly installed with a top cover, and a vacuum pump and an air pump are respectively installed on the left and right sides of the impregnation tank (1).

3. The vacuum pressure impregnation process equipment for graphite heat exchangers according to claim 1, characterized in that: A filter screen (15) is fixedly connected to the inside of the cleaning tank (7), and a circulation pipe (16) with one end penetrating through and extending into the water storage tank (8) is fixedly connected to the bottom of the cleaning tank (7).

4. The vacuum pressure impregnation process equipment for graphite heat exchangers according to claim 1, characterized in that: Both the washing box (7) and the drying box (12) are hinged to a sealing door (17) on the front, and a handle is fixedly connected to the outside of the sealing door (17).

5. The vacuum pressure impregnation process equipment for graphite heat exchangers according to claim 1, characterized in that: The inlet and outlet pipes of the high-pressure water pump (9) are connected to the water storage tank (8) and the manifold (10) respectively, and an exhaust pipe is fixedly connected to the outside of the drying box (12).

6. The vacuum pressure impregnation process equipment for graphite heat exchangers according to claim 1, characterized in that: A conveying pipe (18) is fixedly connected to the back of the processing tank (3), and a solenoid valve is fixedly connected to the outside of the conveying pipe (18).

7. The vacuum pressure impregnation process equipment for graphite heat exchangers according to claim 1, characterized in that: Feed pipes are fixedly connected to the left and right sides of the top of the processing tank (3), and several stirring rods are fixedly connected to the outer surface of the stirring shaft (5).

8. The vacuum pressure impregnation process equipment for graphite heat exchangers according to claim 1, characterized in that: The impregnation tank (1) is located inside the equipment frame (2), which is a steel structure.

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