Coating machine with explosion-proof function and integrated pressure-resistant interlayer

Abstract

The invention discloses a coating machine with an explosion-proof function and integrated with a pressure-resistant interlayer, relates to the technical field of manufacturing of special pharmaceutical / chemical equipment, and aims to solve the problems of unstable pressure, poor safety performance, low energy efficiency, bulkiness and the like of existing equipment, adopts the design of an inner interlayer and an outer interlayer, and reduces the thickness of a side door material while ensuring the pressure-resistant capability. The equipment weight is reduced; the combination of the explosion-proof lamp and the explosion-proof window ensures clear and safe operation sight, the pressure relief membrane of the explosion venting port enhances the pressure release capability, the explosion-proof door is provided with a sampling port, the internal environment is prevented from being influenced by frequent opening and closing of the side door, and a multi-protection mechanism is formed in cooperation with the overpressure automatic pressure relief membrane and the pressure flange welding process meeting the pressure-proof standard. According to the design, the structural strength and the operation safety are both considered, the coating quality stability and the energy efficiency are remarkably improved, the transportation and installation difficulty and the enterprise production cost are reduced, and the device is suitable for the industries of pharmacy, food and the like and has the remarkable safety and economical efficiency advantages.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical / chemical equipment manufacturing technology, specifically to a coating machine with explosion-proof function and integrated pressure-resistant interlayer. Background Technology

[0002] In the production processes of many industries such as pharmaceuticals and food, coating machines are the core equipment for realizing the product coating process, and their performance directly affects product quality, production efficiency, and safety. However, existing coating machines on the market still have many technical problems that urgently need to be solved, which seriously restricts their application in modern production.

[0003] Currently, existing coating machines generally face the problem of unstable internal pressure. Due to the lack of precision in the pressure control system, internal pressure is prone to fluctuations during the coating process. This prevents the coating material from adhering evenly to the product surface, resulting in inconsistent coating quality and affecting the product's appearance and quality stability. More seriously, when the side door needs to be opened during production for equipment inspection or sampling, the internal pressure can quickly become unbalanced, causing pressure leakage. This not only disrupts the ongoing coating process, causing product scrap, but also poses a significant safety hazard and could injure operators.

[0004] From an overall performance perspective, traditional coating machines have significant shortcomings in safety and energy efficiency. Inadequate safety design makes it difficult to effectively protect equipment and personnel when facing sudden pressure changes or abnormal operating conditions. Simultaneously, low energy efficiency leads to excessive energy consumption during operation, increasing production costs for enterprises. To compensate for these safety deficiencies, traditional coating machines have had to use thickened steel plates for their side doors. While this increased door strength to some extent, it also made the entire machine bulky and cumbersome. This not only increases the difficulty of transportation and installation but also places higher demands on the space and load-bearing capacity of the production site, limiting the machine's flexible application in different production environments. Therefore, improving and innovating coating machine technology to address issues such as unstable internal pressure, insufficient safety performance, low energy efficiency, and bulky equipment has become an urgent need for the industry's development. Summary of the Invention

[0005] The main objective of this invention is to provide a coating machine with explosion-proof function and integrated pressure-resistant interlayer, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A coating machine with explosion-proof function and integrated pressure-resistant interlayer includes a frame, a drive unit, a cavity, and a control box. Two sight lights are installed at the top center of the frame. An air inlet pipe is installed to the left of the sight lights, and an exhaust pipe is installed to the right of the sight lights. Explosion relief ports are installed on both sides of the exhaust pipe. One end of the sight lights, air inlet pipe, exhaust pipe, and explosion relief ports is connected to the outside, and the other end is connected to the cavity. A side door is provided on the side of the frame. The cavity is fixed in the middle of the frame. The drive unit is installed at the lower right corner of the rear end of the cavity. The control box is installed at the lower left corner of the front end of the cavity. A front door is provided on the front of the frame. Protective materials are installed on the outside of the frame as needed.

[0008] The pressure-resistant interlayer includes a cavity and a coating pan. The coating pan is located inside the cavity, and a rotating structure is provided between the coating pan and the cavity. An explosion-proof door is installed on the front of the cavity. A feed inlet is located at the upper end of the front of the explosion-proof door, a sampler is located at the lower end of the feed inlet, and a discharge outlet is located at the lower end of the sampler. A bearing seat is located at the rear end of the cavity. The bearing seat and the drive unit are driven by a belt. The other end of the bearing seat is fixed to the rear end of the coating pan. The drive unit drives the coating pan to rotate using a belt. The bearing seat and the cavity are sealed. A spray gun is installed at the opening between the feed inlet and the sampler. A pressure relief diaphragm is installed inside the explosion relief port. When the pressure inside the cavity reaches the threshold that the pressure relief diaphragm inside the explosion relief port can withstand, the pressure is automatically released.

[0009] The pressure-resistant interlayer formed by the cavity and the coating pan significantly reduces the pressure outside the cavity, thus reducing the material thickness and weight of the protective materials for the side door and the outside of the frame.

[0010] Preferably, an explosion-proof lamp is installed inside the viewing lamp, and an explosion-proof viewing window is installed between the explosion-proof lamp and the interior of the cavity.

[0011] Preferably, a cleaning pipe is connected to the side of the exhaust pipe, and an electric water valve is connected to the other end of the cleaning pipe. Water is injected into the cavity through the cleaning pipe via the exhaust pipe.

[0012] Preferably, a drain pipe is installed at the bottom of the cavity. A connecting pipe is provided at the other end of the drain pipe, and the connecting pipe is connected to the factory drainage system.

[0013] Preferably, the center of the main entrance is hollow, and the gap in the center of the main entrance is just enough to fit the explosion-proof door.

[0014] Preferably, the explosion-proof door is provided with a rotating arm at the upper end, the other end of the rotating arm is fixed on the frame, a horizontal rotating shaft is provided in the rotating arm, the horizontal height of the rotating arm is within the hollow position of the explosion-proof door, and the movement trajectory of the rotating arm in opening and closing the explosion-proof door does not affect each other.

[0015] Preferably, the control box controls the operation of other components via circuitry.

[0016] Compared with the prior art, the present invention has the following beneficial effects.

[0017] The explosion-proof coating machine of the present invention adopts a pressure-resistant sandwich structure (inner and outer layer design), which reduces the thickness of the side door material and the weight of the equipment while ensuring the overall pressure resistance. The combination of explosion-proof lights and explosion-proof windows ensures clear and safe operation. The pressure relief diaphragm of the explosion relief port further ensures the pressure release capability. The overall design takes into account both structural strength and operational safety.

[0018] The present invention incorporates a sampling port design on the explosion-proof door to avoid the impact of frequent opening and closing of the side door on the internal environment. Combined with a pressure relief diaphragm that automatically releases pressure in case of overpressure and a pressure flange welding process that meets pressure resistance standards, a multi-layer protection mechanism is formed to effectively prevent safety accidents caused by abnormal pressure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a side view sectional view of the present invention. Figure 1 ;

[0021] Figure 3 This is a front view structural diagram of the present invention;

[0022] Figure 4 Top view of the structure of this invention;

[0023] Figure 5 Schematic diagram of the rear view structure of the present invention;

[0024] Figure 6 Schematic diagram of the side cross-section structure of the present invention Figure 2 ;

[0025] Figure 7 A schematic diagram of the structure of this invention after the main entrance is opened;

[0026] In the diagram: 1. Frame; 2. Drive unit; 3. Side door; 4. Cavity; 5. Explosion vent; 6. Visual indicator; 7. Explosion-proof door; 8. Front door; 9. Explosion-proof light; 10. Explosion-proof viewing window; 11. Coating pan; 12. Bearing housing; 13. Drain pipe; 14. Air inlet pipe; 15. Exhaust pipe; 16. Spray gun; 17. Feed inlet; 18. Cleaning pipe; 19. Connecting pipe; 20. Sampler; 21. Rotating arm; 22. Discharge port; 23. Control box. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Example

[0031] Please see Figure 1-7 The present invention provides a technical solution:

[0032] A coating machine with explosion-proof function and integrated pressure-resistant interlayer includes a frame, a drive unit, a cavity, and a control box. Two sight lights 6 are set at the top center of the frame 1. An air inlet pipe 14 is set on the left side of the sight lights 6, and an exhaust pipe 15 is set on the right side of the sight lights 6. Explosion relief ports 5 are set on both sides of the exhaust pipe 15. One end of the sight lights 6, air inlet pipe 14, exhaust pipe 15, and explosion relief ports 5 are connected to the outside, and the other end is connected to the cavity 4. A side door 3 is set on the side of the frame 1. The cavity 4 is fixed in the middle of the inside of the frame 1. The drive unit 2 is installed at the lower right corner of the rear end of the cavity 4. The control box 23 is installed at the lower left corner of the front end of the cavity 4. A front door 8 is set on the front of the frame 1. Protective materials are installed on the outside of the frame 1 as needed.

[0033] The pressure-resistant interlayer includes a cavity 4 and a coating pan 11. The coating pan 11 is disposed inside the cavity 4, and a rotating structure is provided between the coating pan 11 and the cavity 4. An explosion-proof door 7 is installed on the front of the cavity 4. A feed inlet 17 is provided at the upper end of the front of the explosion-proof door 7. A sampler 20 is provided at the lower end of the feed inlet 17. A discharge outlet 22 is provided at the lower end of the sampler 20. A bearing seat 12 is provided at the rear end of the cavity 4. The bearing seat 12 and the drive unit 2 are driven by a belt. The other end of the bearing seat 12 is fixed to the rear end of the coating pan 11. The drive unit 2 drives the coating pan 11 to rotate by the belt. The bearing seat 12 and the cavity 4 are sealed. A spray gun 16 is installed at the opening between the feed inlet 17 and the sampler 20. A pressure relief diaphragm is provided inside the explosion relief port 5. When the pressure inside the cavity 4 reaches the threshold that the pressure relief diaphragm inside the explosion relief port 5 can bear, the pressure is automatically released.

[0034] The pressure-resistant interlayer formed by the cavity 4 and the coating pan 11 significantly reduces the pressure outside the cavity 4, thus reducing the material thickness and weight of the protective material on the side door 3 and the outside of the frame 1.

[0035] In this embodiment, an explosion-proof lamp 9 is installed inside the viewing lamp 6, and an explosion-proof viewing window 10 is installed between the explosion-proof lamp 9 and the cavity 4.

[0036] In this embodiment, the exhaust pipe 15 is connected to the cleaning pipe 18 on one side, and the other end of the cleaning pipe 18 is connected to an electric water valve. The cleaning pipe 18 injects water into the cavity 4 through the exhaust pipe 15.

[0037] In this embodiment, a drain pipe 13 is installed at the bottom of the cavity 4. A connecting pipe 19 is provided at the other end of the drain pipe 13, and the connecting pipe 19 is connected to the factory drainage system.

[0038] In this embodiment, the main door 8 has a hollow structure in the middle, and the explosion-proof door 7 can be fitted into the empty space in the middle of the main door 8.

[0039] In this embodiment, a rotating arm 21 is provided at the upper end of the explosion-proof door 7, and the other end of the rotating arm 21 is fixed on the frame 1. A horizontal rotating shaft is provided in the rotating arm 21, and the horizontal height of the rotating arm 21 is within the hollow position of the explosion-proof door 7. The movement trajectory of the rotating arm 21 in opening and closing the explosion-proof door 7 and the opening and closing trajectory of the main door 8 do not affect each other.

[0040] In this embodiment, the control box 23 controls the operation of other components through circuitry.

[0041] Specific implementation process

[0042] Pre-start checks and preparations: Operators should first check whether the frame 1 is stable and whether all components are properly connected. Check whether the side door 3 and the front door 8 are tightly closed and whether the explosion-proof door 7 is in normal condition. Next, check whether the settings of the control box 23 meet the production requirements, and at the same time confirm that the electric water valve connected to the cleaning pipe 18 is in the closed position.

[0043] Start the equipment: Start the drive unit 2 via the control box 23. The drive unit 2 drives the bearing seat 12 to rotate via the belt, which in turn causes the coating pan 11 to start rotating. At this time, the air inlet pipe 14 begins to introduce external air to provide a suitable airflow environment for the cavity 4, and the exhaust pipe 15 simultaneously exhausts air to maintain the air circulation in the cavity 4.

[0044] Feeding and Coating Operation: The material to be coated is added into the coating pan 11 through the feed port 17. The spray gun 16 starts working according to the preset parameters, evenly spraying the coating material onto the surface of the material. During the coating process, the explosion-proof light 9 inside the sight glass 6 illuminates, and the operator can observe the operation of the coating pan 11 inside the cavity 4 and the coating status of the material through the explosion-proof viewing window 10.

[0045] Sampling and testing: When it is necessary to test the coating effect, the operator uses the sampler 20 to take out the sample from the cavity 4 for testing. There is no need to frequently open and close the main door 8, thus avoiding interference with the environment inside the cavity 4.

[0046] Cleaning operation: After coating is completed, the operator opens the electric water valve connected to the cleaning pipe 18 through the control box 23. The cleaning water enters the cavity 4 through the cleaning pipe 18 and the exhaust pipe 15 to clean the coating pan 11 and the inside of the cavity 4. The wastewater after cleaning is discharged into the factory drainage system through the drain pipe 13 and the connecting pipe 19.

[0047] Discharge and shutdown: Open discharge port 22 to discharge the coated material. Then, shut down drive unit 2 via control box 23 to stop coating pan 11 from rotating. Finally, turn off explosion-proof light 9 to end the entire coating production process.

[0048] The role of each component during use

[0049] Frame 1: Serves as the supporting frame for the entire coating machine, providing a stable mounting base for other components and ensuring the stability and reliability of the equipment during operation.

[0050] Drive unit 2: Provides power for the rotation of coating pan 11, and transmits the power to bearing seat 12 through belt drive, so that coating pan 11 can rotate at a set speed, ensuring that the material is heated evenly and receives coating material spraying during the coating process.

[0051] Side door 3: Provides a side passage for entering rack 1, facilitating equipment maintenance, repair, and operation inside rack 1 under special circumstances.

[0052] Cavity 4 is the main area for coating operations. It contains key components such as the coating pan 11 and the spray gun 16, providing a relatively closed and controllable environment for material coating.

[0053] Explosion relief port 5: It is equipped with a pressure relief diaphragm. When the pressure inside the cavity 4 exceeds the threshold that the pressure relief diaphragm can withstand, the pressure relief diaphragm will automatically open and close to release the pressure inside the cavity in time, prevent explosion accidents caused by excessive pressure, and ensure the safety of equipment and personnel.

[0054] Viewing light 6: An explosion-proof light 9 is installed inside to provide illumination for observing the inside of the cavity 4.

[0055] Explosion-proof door 7: Not only does it possess the sealing function of a regular door, but it also has a certain degree of explosion-proof capability, enhancing the safety of the equipment while ensuring the airtightness of cavity 4. Opening and closing operation is achieved via rotating arm 21.

[0056] Main entrance 8: The main entrance on the front of the rack 1. Its hollow structure in the middle can be fitted with the explosion-proof door 7, which makes it convenient for operators to carry out relevant operations from the front. Moreover, its opening and closing trajectory does not affect the opening and closing of the explosion-proof door 7.

[0057] Explosion-proof lamp 9: Provides illumination within the sight lamp 6 and has explosion-proof properties to ensure safe use in environments where flammable and explosive gases may be present.

[0058] Explosion-proof viewing window 10: Installed between the explosion-proof light 9 and the cavity 4, it allows operators to clearly observe the situation inside the cavity 4 without opening the door, and also has explosion-proof function to ensure the safety of the observation process.

[0059] Coating pan 11: The material is rotated and coated in it. It is the core component for the full mixing and adhesion of the material and the coating material. Its rotational motion enables the material to receive the coating treatment evenly.

[0060] Bearing seat 12: Supports the rotating shaft of the coating pan 11, ensuring the smoothness and accuracy of the rotation of the coating pan 11, and reducing friction and vibration during the rotation process.

[0061] Drain pipe 13: Discharges wastewater from cleaning chamber 4 and coating pan 11 into the equipment, keeping the inside of chamber 4 clean.

[0062] Air inlet 14: Introduces fresh external air, regulates the gas environment inside cavity 4, provides necessary ventilation for the coating process, and ensures the drying of materials and coating quality.

[0063] Exhaust duct 15: Exhausts air from cavity 4, maintaining airflow and pressure balance within cavity 4 to prevent the accumulation of harmful gases. It also assists in exhausting gases from the cavity during the cleaning process.

[0064] Spray gun 16: It is a key component for coating materials, which sprays the coating material evenly onto the surface of the material according to the preset parameters. Its spraying effect directly affects the coating quality.

[0065] Feed inlet 17: Used to add the material to be coated into the coating pot 11, and is the channel for the material to enter the cavity 4.

[0066] Cleaning pipe 18: One end is connected to an electric water valve, and the other end injects water into the cavity 4 through the exhaust pipe 15 for cleaning the cavity 4 and the coating pan 11 to remove residual materials and coating materials.

[0067] Connecting pipe 19: Connects the sewage discharged from drain pipe 13 to the factory drainage system to ensure that the sewage can be discharged smoothly from the equipment and avoid sewage accumulation.

[0068] Sampler 20: Allows operators to remove samples from cavity 4 at any time during the coating process for testing, so as to understand the coating effect in a timely manner, adjust process parameters, and ensure product quality.

[0069] Rotary arm 21: One end is fixed on the frame 1, and the other end is connected to the explosion-proof door 7. The opening and closing operation of the explosion-proof door 7 is realized through the horizontal rotation shaft, and its movement trajectory does not interfere with the opening and closing of the main door 8, which is convenient for operation.

[0070] Discharge port 22: After coating is completed, the material is discharged from cavity 4 here, which is the channel for the finished material to leave the equipment.

[0071] Control box 23: As the control center of the equipment, it controls the operation of components such as drive unit 2, spray gun 16, and electric water valve through circuit control. Operators can set parameters, start and stop the equipment through control box 23 to realize the automated control of the entire coating process.

[0072] This coating machine, featuring explosion-proof design and integrated pressure-resistant interlayer, achieves safe, efficient, and stable coating production through the coordinated operation of its components, meeting the stringent requirements of modern industrial production for equipment performance and safety.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A coating machine with explosion-proof function and integrated pressure-resistant interlayer, comprising a frame (1), a drive unit (2), a pressure-resistant interlayer, and a control box (23), characterized in that: Two sight lights (6) are set at the top center of the frame (1). An air inlet pipe (14) is set on the left side of the sight lights (6). An exhaust pipe (15) is set on the right side of the sight lights (6). Explosion vents (5) are set on both sides of the exhaust pipe (15). One end of the sight lights (6), air inlet pipe (14), exhaust pipe (15) and explosion vents (5) are connected to the outside, and the other end is connected to the cavity (4). A side door (3) is set on the side of the frame (1). The cavity (4) is fixed in the middle of the inside of the frame (1). A drive unit (2) is installed at the lower right corner of the rear end of the cavity (4). A control box (23) is installed at the lower left corner of the front end of the cavity (4). A front door (8) is set on the front of the frame (1). Protective materials are installed on the outside of the frame (1) as needed. The pressure-resistant interlayer includes a cavity (4) and a coating pan (11). The coating pan (11) is installed inside the cavity (4). A rotating structure is provided between the coating pan (11) and the cavity (4). An explosion-proof door (7) is installed on the front of the cavity (4). A feed inlet (17) is provided at the upper end of the front of the explosion-proof door (7). A sampler (20) is provided at the lower end of the feed inlet (17). A discharge outlet (22) is provided at the lower end of the sampler (20). A bearing seat (12) is provided at the rear end of the cavity (4). The bearing seat (12) and the drive The units (2) are driven by belts. The other end of the bearing seat (12) is fixed to the rear end of the coating pan (11). The drive unit (2) drives the coating pan (11) to rotate by belts. The bearing seat (12) and the cavity (4) are sealed. A spray gun (16) is installed at the opening between the feed port (17) and the sampler (20). The pressure relief diaphragm is installed inside the explosion relief port (5). When the pressure inside the cavity (4) reaches the threshold that the pressure relief diaphragm inside the explosion relief port (5) can bear, the pressure is automatically released. The pressure-resistant interlayer formed by the cavity (4) and the coating pan (11) significantly reduces the pressure outside the cavity (4), thus reducing the material thickness and weight of the protective material outside the side door (3) and the frame (1).

2. A coating machine with explosion-proof function and integrated pressure-resistant interlayer according to claim 1, characterized in that: An explosion-proof lamp (9) is installed inside the viewing lamp (6), and an explosion-proof viewing window (10) is installed between the explosion-proof lamp (9) and the cavity (4).

3. A coating machine with explosion-proof function and integrated pressure-resistant interlayer according to claim 1, characterized in that; The exhaust pipe (15) is connected to the cleaning pipe (18) on one side, and the other end of the cleaning pipe (18) is connected to an electric water valve. The cleaning pipe (18) injects water into the cavity (4) through the exhaust pipe (15).

4. A coating machine with explosion-proof function and integrated pressure-resistant interlayer according to claim 1, characterized in that: A drain pipe (13) is installed at the bottom of the cavity (4). A connecting pipe (19) is provided at the other end of the drain pipe (13), and the connecting pipe (19) is connected to the factory drainage system.

5. A coating machine with explosion-proof function and integrated pressure-resistant interlayer according to claim 1, characterized in that: The main door (8) has a hollow structure in the middle, and the blast door (7) fits perfectly into the empty space in the middle of the main door (8).

6. A coating machine with explosion-proof function and integrated pressure-resistant interlayer according to claim 1, characterized in that: The explosion-proof door (7) is provided with a rotating arm (21) at the upper end. The other end of the rotating arm (21) is fixed on the frame (1). A horizontal rotating shaft is provided in the rotating arm (21). The horizontal height of the rotating arm (21) is within the hollow position of the explosion-proof door (7). The movement trajectory of the rotating arm (21) in opening and closing the explosion-proof door (7) and the opening and closing trajectory of the main door (8) do not affect each other.

7. A coating machine with explosion-proof function and integrated pressure-resistant interlayer according to claim 1, characterized in that: The control box (23) controls the operation of other components through circuitry.

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