A rotating sealing door and safety interlock structure for EIGA equipment

Abstract

This utility model relates to the field of sealing equipment technology, and discloses a rotary sealing door and safety interlock structure for EIGA equipment. It includes a rotating handle, an operating layer fixedly connected to the middle of the rotating handle, a sealing ring fixedly connected to the middle of the operating layer, a rotating plate fixedly connected to the bottom inner side of the operating layer, a connecting column fixedly connected to the top of the rotating plate, a pressing mechanism provided in the middle of the sealing ring, a central shaft slidably connected to the inner wall of the sealing ring, a warning head fixedly connected to the top of the central shaft, a bottom shell slidably connected to the bottom of the central shaft, and a pressure plate fixedly connected to the bottom of the warning head. In this utility model, when the pressure on one side of the equipment is too high, the central shaft can automatically move upward, causing the interface to separate from the connecting column and the docking column, thereby allowing the operating layer, pull plate, and door panel to enter an idle state, effectively avoiding the safety hazards caused by forcibly rotating and opening the door panel under high pressure conditions.

Description

Technical Field

[0001] This utility model relates to the field of sealing equipment technology, and in particular to a rotary sealing door and safety interlocking structure for EIGA equipment. Background Technology

[0002] Rotary sealing doors are widely used in high-pressure sealed equipment such as sterilizers and pressure vessels. They rely on the rotation of a handwheel to lock and seal the door, and are the core structure for achieving rapid opening and closing and cavity sealing. However, under high temperature and high pressure conditions, if the sealing door is opened before the pressure is completely released, it can easily cause safety accidents such as media splashing and burns to personnel.

[0003] A search revealed Chinese Patent Publication No. CN215331992U, which discloses a safety interlock device for the sealing door of a horizontal circular handwheel sterilizer. This invention relates to the field of handwheel sterilizer technology. The device includes a sealing door, a handwheel assembly, and an electromagnetic lock assembly. One side of the sealing door is fixedly connected to the handwheel assembly, and the electromagnetic lock assembly is located above the handwheel assembly. The handwheel assembly includes a handwheel, a transmission screw, a fixed cover, a door bolt, a rotating ratchet plate, and a fixed load-bearing bracket. The electromagnetic lock assembly includes an electromagnetic lock bracket, an electromagnetic coil, a second spring, and a locking tongue. The fixed cover contains a touch button, a movable cylinder, an iron block, a first spring, and an electromagnet. This invention provides a safety interlock device for the sealing door of a horizontal circular handwheel sterilizer. It facilitates the opening and closing of the sealing door, provides good sealing performance, has a simple structure, and is easy to control, achieving dual safety protection and improving safety performance. However, the above utility model patents rely entirely on electronic control components to complete the locking and unlocking actions. On the one hand, when the internal pressure of the equipment is abnormally high, it is impossible to achieve forced idling protection through a purely mechanical structure. If the electronic control fails or the circuit malfunctions, the door can still be manually rotated to open under high pressure, which poses a safety hazard. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a rotary sealing door and safety interlock structure for EIGA equipment, aiming to solve the problem in the prior art where electrical control failure or circuit faults result in the door still being manually rotated and opened under high pressure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rotary sealing door and safety interlock structure for EIGA equipment, comprising a rotary handle, an operating layer fixedly connected to the middle of the rotary handle, a sealing ring fixedly connected to the middle of the operating layer, a rotating plate fixedly connected to the bottom inner side of the operating layer, a connecting column fixedly connected to the top of the rotating plate, and a pressing mechanism provided in the middle of the sealing ring.

[0006] As a further description of the above technical solution: The pressing mechanism includes a central shaft, which is slidably connected to the inner wall of the sealing ring. A warning head is fixedly connected to the top of the central shaft, and a bottom shell is slidably connected to the bottom of the central shaft. A pressure plate is fixedly connected to the bottom of the warning head.

[0007] As a further description of the above technical solution: A docking column is fixedly connected to the top of the inner wall of the operating layer, and a movable disk is slidably connected inside the operating layer.

[0008] As a further description of the above technical solution: The bottom of the movable plate is fixedly connected to a positioning column, and the outer wall of the movable plate has an interface.

[0009] As a further description of the above technical solution: An opening is fixedly connected to the middle of the rotating plate, and a sealing base plate is fixedly connected to the bottom of the outer wall of the operating layer.

[0010] As a further description of the above technical solution: A pull plate is fixedly connected to the outer wall of the operating layer, and a door panel is fixedly connected to the outer wall of the pull plate.

[0011] As a further description of the above technical solution: A card holder is fixedly connected to the top of the door panel, and a threaded post is fixedly connected to the outer wall of the card holder.

[0012] As a further description of the above technical solution: A sealing layer is fixedly connected to the inner wall of the bottom shell, and a folded layer is fixedly connected to the middle of the sealing layer.

[0013] This utility model has the following beneficial effects: 1. In this utility model, when the pressure on one side of the equipment is too high, the central shaft can be automatically moved upward, causing the interface to separate from the connecting column and the docking column, thereby allowing the operating layer, pull plate and door plate to enter an idle state. This effectively avoids the safety hazards caused by forcibly rotating and opening the door plate under high pressure conditions, realizes the forced interlock protection between pressure over-limit and gate opening, and significantly improves the safety and stability of equipment operation.

[0014] 2. In this utility model, a pressure plate is used in conjunction with a linkage lifting structure of a sealing layer and a folding layer. When the internal pressure reaches a set threshold, the pressure plate pushes the sealing layer to compress the folding layer, causing the central shaft and the warning head to lift upwards synchronously. This not only enables intuitive feedback of pressure signals through structural displacement, but also avoids false triggering caused by non-pressure factors by relying on mechanical deformation, ensuring that the interlocking action is only activated under real high-pressure conditions. Attached Figure Description

[0015] Figure 1This is a front perspective view of a rotary sealing door and safety interlocking structure for EIGA equipment proposed in this utility model. Figure 2 This is a schematic diagram of a door panel structure for a rotary sealing door and safety interlocking structure for EIGA equipment proposed in this utility model. Figure 3 This is a partial sectional view of the operating layer of a rotary sealing door and safety interlocking structure for EIGA equipment proposed in this utility model. Figure 4 This is a partial structural diagram of the movable disc of a rotary sealing door and safety interlocking structure for EIGA equipment proposed in this utility model. Figure 5 This is a schematic diagram of the rotating plate structure of a rotating sealing door and safety interlocking structure for EIGA equipment proposed in this utility model. Figure 6 This is a cross-sectional view of the pressing mechanism of a rotary sealing door and safety interlocking structure for EIGA equipment proposed in this utility model.

[0016] Legend: 1. Rotating handle; 2. Pressing mechanism; 201. Central shaft; 202. Warning head; 203. Bottom shell; 204. Sealing layer; 205. Folding layer; 206. Pressure plate; 3. Operating layer; 4. Sealing ring; 5. Rotating plate; 6. Connecting column; 7. Positioning column; 8. Connecting column; 9. Movable plate; 10. Interface; 11. Orifice; 12. Sealing base plate; 13. Door panel; 14. Threaded column; 15. Card seat; 16. Pull plate. Detailed Implementation

[0017] 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.

[0018] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model is provided: a rotary sealing door and safety interlock structure for EIGA equipment, including a rotary handle 1, an operating layer 3 fixedly connected to the middle of the rotary handle 1, a sealing ring 4 fixedly connected to the middle of the operating layer 3, a rotating plate 5 fixedly connected to the bottom inner side of the operating layer 3, a connecting column 6 fixedly connected to the top of the rotating plate 5, and a pressing mechanism 2 provided in the middle of the sealing ring 4. Specifically, the rotating handle 1 is easy for operators to grip and operate to open and close the door. The middle part of the rotating handle 1 is firmly fixed to the operating layer 3 to ensure that the operating layer 3 rotates stably and synchronously when rotated, avoiding operational failure. The operating layer 3, as a key intermediate body, has a ring structure. The outer side is connected to the sealed door body, and various transmission and sealing components are installed on the inner side. To ensure airtightness, a sealing ring 4 is fixedly connected to the middle of the operating layer 3. Its tight fit with the mating surface can effectively prevent leakage of high-pressure media. A rotating plate 5 is fixedly connected to the bottom of the inner side of the operating layer 3 to transmit rotational power. A column 6 is fixedly connected to the top of the rotating plate 5. The top of the column has a locking structure that can be precisely locked with subsequent components to lock and open the door. In addition, a pressing mechanism 2 is provided in the middle of the sealing ring 4. It works in conjunction with the sealing ring 4 and the operating layer 3 to enhance the sealing effect when the door is locked, and at the same time senses the internal pressure to provide support for safety interlocking.

[0019] Please see the appendix Figure 5 - Appendix Figure 6 The pressing mechanism 2 includes a central shaft 201, which is slidably connected to the inner wall of the sealing ring 4. A warning head 202 is fixedly connected to the top of the central shaft 201, and a bottom shell 203 is slidably connected to the bottom of the central shaft 201. A pressure plate 206 is fixedly connected to the bottom of the warning head 202, and a sealing layer 204 is fixedly connected to the inner wall of the bottom shell 203. A folding layer 205 is fixedly connected to the middle of the sealing layer 204. Specifically, the pressing mechanism 2 mainly consists of a central shaft 201, a warning head 202, a bottom shell 203, and a matching sealing and pressure-bearing assembly. The central shaft 201 is slidably connected to the inner wall of the sealing ring 4 with a clearance fit, and can move linearly up and down along the axial direction to realize the telescopic action of the mechanism. The top of the central shaft 201 is fixedly connected to the warning head 202, which serves as both a pressure transmission component and a visual display of the working status and displacement stroke of the mechanism. The bottom of the central shaft 201 is slidably fitted with the bottom shell 203, forming a stable guide support inside the bottom shell 203. The bottom end of the warning head 202 is fixedly connected to a pressure plate 206, which moves synchronously with the warning head 202 to receive and transmit external pressure loads. A sealing layer 204 is fixedly installed on the inner wall of the bottom shell 203. The sealing layer 204 is arranged close to the inner wall of the bottom shell 203 to form a reliable static sealing structure to prevent media leakage. A folded layer 205 is fixedly connected to the middle of the sealing layer 204. The folded layer 205 expands and contracts accordingly as the central shaft 201 moves up and down. While ensuring the continuity of the seal, it provides flexible compensation and buffer for the axial movement of the central shaft 201, ensuring stable and reliable sealing performance during the pressing process.

[0020] Please see the appendix Figure 3 - Appendix Figure 5The top of the inner wall of the operating layer 3 is fixedly connected to a docking column 8. The inside of the operating layer 3 is slidably connected to a movable plate 9. The bottom of the movable plate 9 is fixedly connected to a positioning column 7. The outer wall of the movable plate 9 is provided with an interface 10. The middle of the rotating plate 5 is fixedly connected to an orifice 11. The bottom of the outer wall of the operating layer 3 is fixedly connected to a sealing base plate 12. The outer wall of the operating layer 3 is fixedly connected to a pull plate 16. The outer wall of the pull plate 16 is fixedly connected to a door panel 13. The top of the door panel 13 is fixedly connected to a card seat 15. The outer wall of the card seat 15 is fixedly connected to a threaded column 14. Specifically, a docking post 8 is fixedly connected to the top of the inner wall of the operating layer 3. The docking post 8 is adapted to the engaging structure of the connecting post 6 to achieve precise docking and power transmission between components. A movable disk 9 is slidably connected inside the operating layer 3. The movable disk 9 can slide flexibly along the inner wall of the operating layer 3. A positioning post 7 is fixedly connected to its bottom. The positioning post 7 is used to limit the sliding trajectory of the movable disk 9 to ensure that the sliding process is stable and does not deviate. An interface 10 is opened on the outer wall of the movable disk 9. The interface 10 matches the connecting post 6. When the connecting post 6 rises, it is positioned and guided by the positioning post 7, so that the connecting post 6 and the interface 10 can achieve precise engagement and disengagement, thereby controlling the on and off of power transmission. The rotating plate 5 is in the middle The operating layer 3 is fixedly connected to an orifice 11. A sealing base plate 12 is fixedly connected to the bottom of the outer wall of the operating layer 3. The sealing base plate 12 fits tightly against the outer wall of the operating layer 3 to further enhance the overall airtightness of the device and prevent media leakage. A pull plate 16 is fixedly connected to the outer wall of the operating layer 3. The pull plate 16 is used to transmit the rotational power of the operating layer 3. A door panel 13 is fixedly connected to its outer wall to ensure that the door panel 13 is driven to open and close synchronously when the operating layer 3 rotates. A card seat 15 is fixedly connected to the top of the door panel 13. The card seat 15 is used to install on the door panel 13. A threaded post 14 is fixedly connected to the outer wall of the card seat 15. The threaded post 14 is used to realize the firm connection between the card seat 15 and other components and ensure the stability of the opening and closing process of the door panel 13.

[0021] Working principle: During use, rotating the rotating handle 1 causes the operating layer 3 to rotate. The inner wall of the operating layer 3 is fixedly connected to the rotating plate 5, causing the rotating handle 1 to drive the rotating plate 55 to rotate. The outer side of the operating layer 3 is connected to the door panel 13 via the pull plate 16. When the pressure on one side of the device is too high, the central shaft 201 drives the movable plate 9 to move upward. At this time, the interface 10 also moves upward away from the connecting column 6, and the connecting column 6 separates from the docking column 8. This causes the pull plate 16 connected to the operating layer 3 to rotate freely. The inner wall of the door panel 13 is fixed to the pull plate 16, causing the door panel 13 to rotate freely without force. That is, when the pressure reaches the bottom of the device, the equipment cannot be rotated to open. After the pressure is released, the connecting column 6 docks with the docking column 8 through the interface 10. After the operating layer 3 is subjected to force and rotates, it drives the rotating plate 5 to rotate. The rotating plate 5 is fixed to the pull plate 16 via the positioning column 7. The pull plate 16 is fixed to the door panel 13, allowing the door panel 13 to rotate and achieve the purpose of opening the gate. When the pressure plate 206 at the bottom of the central shaft 201 is subjected to greater pressure, it pushes the sealing layer 204 along the inner wall of the bottom shell 203. The inner side of the sealing layer 204 is connected by the folding layer 205. After being subjected to a certain degree of pressure, the folding layer 205 begins to contract, so that the device 2 is subjected to a certain degree of pressure, causing the central shaft 201 to lift upward, and then driving the warning head 202 to rise, thereby achieving the purpose of reducing accidental activation of the device.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotating seal door and safety interlock structure for EIGA equipment, comprising a rotating handle (1), characterized in that: An operating layer (3) is fixedly connected to the middle of the rotating handle (1), a sealing ring (4) is fixedly connected to the middle of the operating layer (3), a rotating plate (5) is fixedly connected to the bottom inner side of the operating layer (3), a connecting column (6) is fixedly connected to the top of the rotating plate (5), and a pressing mechanism (2) is provided in the middle of the sealing ring (4).

2. The rotating seal door and safety interlock structure for an EIGA facility of claim 1, wherein: The pressing mechanism (2) includes a central shaft (201), which is slidably connected to the inner wall of the sealing ring (4). A warning head (202) is fixedly connected to the top of the central shaft (201), and a bottom shell (203) is slidably connected to the bottom of the central shaft (201). A pressure plate (206) is fixedly connected to the bottom of the warning head (202).

3. The rotating seal door and safety interlock structure for an EIGA facility of claim 1, wherein: The top of the inner wall of the operating layer (3) is fixedly connected to a docking column (8), and the inside of the operating layer (3) is slidably connected to a movable disk (9).

4. The rotating seal door and safety interlock structure for an EIGA facility of claim 3, wherein: The bottom of the movable plate (9) is fixedly connected to a positioning column (7), and the outer wall of the movable plate (9) is provided with an interface (10).

5. The rotating seal door and safety interlock for EIGA equipment of claim 1, wherein: The rotating plate (5) is fixedly connected to the middle of the hole (11), and the bottom of the outer wall of the operating layer (3) is fixedly connected to the sealing bottom plate (12).

6. The rotating seal door and safety interlock for EIGA equipment of claim 1, wherein: The outer wall of the operating layer (3) is fixedly connected to a pull plate (16), and the outer wall of the pull plate (16) is fixedly connected to a door panel (13).

7. The rotating seal door and safety interlock structure for an EIGA facility of claim 6, wherein: The top of the door panel (13) is fixedly connected to a card holder (15), and the outer wall of the card holder (15) is fixedly connected to a threaded post (14).

8. The rotating seal door and safety interlock for an EIGA facility of claim 2, wherein: A sealing layer (204) is fixedly connected to the inner wall of the bottom shell (203), and a folding layer (205) is fixedly connected to the middle of the sealing layer (204).

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