A heat press tank door structure

Abstract

The utility model relates to the field of autoclave, specifically relates to a kind of autoclave door structure, including the door of being located on autoclave and the limiting plate being fixed on the outer wall of door, the limiting plate is equipped with the lock handle for limiting door opening, and the surface of lock handle is rotatably installed in autoclave outer wall by positioning sleeve, the door structure further includes: piston cylinder rotatably installed in the one end of lock handle, and one end of piston cylinder is fixed in autoclave inside.The utility model is provided with lock rod, locking hole and lock handle etc., when the pressure in autoclave is too large, one end of lock rod is under pressure, is always inserted in the inside of locking hole, to limit the overturning of lock handle, so that operator cannot forcibly open door by lock handle, to avoid the case that pressure gauge pointer degree is inaccurate, operator forcibly opens lock piece with hydraulic wrench, and there is still greater pressure in tank, cause door ejection to cause operator to cause injury etc.

Description

Technical Field

[0001] This utility model relates to the field of autoclaves, and in particular to a structure for an autoclave door. Background Technology

[0002] As a key piece of equipment for curing and molding composite materials, autoclaves must withstand high pressure (typically 0.5-3 MPa) and high temperature environments during operation. The autoclave door, a core component ensuring safe operation, generally employs a mechanical locking structure combined with a manual safety interlock device. In traditional structures, the operator releases the locking mechanism by rotating the lever of the manual safety interlock, thereby opening the door.

[0003] However, the existing design has significant safety hazards: during long-term use of the autoclave, its core elastic elements (such as Bourdon tubes) will inevitably undergo slight plastic deformation (creep) and material fatigue after being subjected to high temperature, high pressure and cyclic loads for a long time. This will lead to changes in its elastic properties, decreased sensitivity, and inaccurate readings. If it is not calibrated regularly, and the operator directly uses a hydraulic wrench or other powerful tools to forcibly drive the rotating rod and open the locking device, the huge axial thrust generated by the residual high pressure inside the tank may instantly act on the tank door, causing the locking mechanism to fail and triggering a high-speed ejection accident of the tank door. Such accidents not only cause damage to the equipment, but may also cause fatal injuries to the operators. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a thermostatic tank door structure to solve the technical problems in the prior art.

[0005] Based on the above objectives, this utility model provides a thermostatic tank door structure, including a tank door disposed on the thermostatic tank and a limiting plate fixed to the outer wall of the tank door. The limiting plate is provided with a locking handle for restricting the opening of the tank door, and the surface of the locking handle is rotatably mounted on the outer wall of the thermostatic tank through a positioning sleeve. The tank door structure also includes: A piston cylinder is rotatably mounted on one end of the lock handle, and one end of the piston cylinder is fixed inside the autoclave. A locking hole is provided at the end of the lock handle located inside the piston cylinder. A piston located inside the piston cylinder; A locking rod for inserting into the locking hole to restrict the rotation of the lock handle and a positioning ring for sliding on the locking rod, wherein the outer ring of the positioning ring is fixed to the inner wall of the piston cylinder and one side of the piston is fixedly connected to one end of the locking rod; A spring is fitted onto the locking rod, with one end of the spring fixed to one side of the piston and the other end of the spring fixed to one side of the positioning ring.

[0006] Preferably, the interior of the limiting plate is an open arc-shaped groove, and the end of the lock handle near the limiting plate is set as a semi-circle that matches the arc-shaped groove.

[0007] Preferably, the end of the locking rod near the locking hole is arc-shaped, and the axis of the locking rod is aligned with the center of the locking hole.

[0008] Preferably, a limiting ring is fixedly connected to the surface of the locking rod, and one side of the limiting ring abuts against the positioning ring.

[0009] Preferably, a pressing member is fixed to the top of the limiting ring, and a push button switch is attached to the top of the pressing member. The push button switch is fixedly installed on the piston cylinder, and its upper end extends to the outside of the piston cylinder. An indicator light is fixedly connected to the top of the push button switch, and the indicator light is electrically connected to the push button switch.

[0010] Preferably, the top of the extruder is a trapezoidal structure, and the bottom of the button switch is placed on the trapezoidal inclined surface of the top of the extruder.

[0011] Preferably, a fixing member is fixedly connected to the surface of the lock handle, and a first limiting member and a second limiting member are respectively provided on both sides of the fixing member to restrict its movement, and one side of the first limiting member and the second limiting member are fixed to the outer wall of the autoclave.

[0012] Preferably, the fixing member, the first limiting member, and the second limiting member are all magnets, and the fixing member and the first and second limiting members have opposite magnetic poles and attract each other.

[0013] The beneficial effects of this utility model are as follows: The autoclave door structure of this utility model, through the setting of components such as locking rod, locking hole and locking handle, when the internal pressure of the autoclave is too high, one end of the locking rod is subjected to pressure and is always inserted into the locking hole, thereby restricting the rotation of the locking handle. This prevents the operator from forcibly opening the door with the locking handle, thus avoiding the problem that if the pressure gauge reading is inaccurate, the operator may use a hydraulic wrench to forcibly open the locking component, while there is still a large pressure inside the tank, causing the door to eject and injuring the operator. By incorporating components such as the extrusion mechanism, push-button switches, and indicator lights, when pressure exists inside the autoclave, the upper limit ring of the locking rod drives the push-button switch on the extrusion indicator light to keep the indicator light illuminated, making it easy for the operator to observe and reminding the operator that there is pressure inside the autoclave, thus preventing the autoclave door from being forcibly opened. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional schematic diagram of a portion of the piston cylinder and other structures of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is an exploded view of the lock handle, piston cylinder, and locking hole components of this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a three-dimensional structural diagram of the extrusion part, push button switch and indicator light of this utility model.

[0016] The diagram is marked as follows: 1. Tank door; 2. Limiting plate; 3. Lock handle; 4. Piston cylinder; 5. Locking hole; 6. Locking rod; 7. Piston; 8. Positioning ring; 9. Limiting ring; 10. Spring; 11. Extrusion component; 12. Push button switch; 13. Indicator light; 14. Fixing component; 15. Limiting component No. 1; 16. Limiting component No. 2. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] The first aspect of this utility model proposes a door structure for an autoclave, such as... Figure 1-6 As shown, it includes a tank door 1 provided on the autoclave and a limiting plate 2 fixed on the outer wall of the tank door 1. The limiting plate 2 is provided with a locking handle 3 for limiting the opening of the tank door 1, and the surface of the locking handle 3 is rotatably installed on the outer wall of the autoclave through a positioning sleeve. The tank door structure also includes: A piston cylinder 4 is rotatably mounted on one end of the lock handle 3, and one end of the piston cylinder 4 is fixed inside the autoclave. It should be noted that the autoclave has a perforation, and the end of the piston cylinder 4 with an open structure is fixedly mounted inside the autoclave through the perforation. The end of the lock handle 3 located inside the piston cylinder 4 has a locking hole 5. It should be noted that one end of the lock handle 3 is rotatably mounted on the inner wall of the piston cylinder 4 through a bearing, and the outer ring of the bearing is fixedly connected to the inside of the piston cylinder 4. The inner ring of the bearing is fixedly connected to the outer wall of the lock handle 3, which improves the stability of the rotation of the lock handle 3. Piston 7 is located inside piston cylinder 4; The locking rod 6 is inserted into the locking hole 5 to restrict the rotation of the locking handle 3, and the positioning ring 8 slides on the locking rod 6. The outer ring of the positioning ring 8 is fixed to the inner wall of the piston cylinder 4, and one side of the piston 7 is fixedly connected to one end of the locking rod 6. A spring 10 is fitted onto the locking rod 6. One end of the spring 10 is fixed to one side of the piston 7, and the other end of the spring 10 is fixed to one side of the positioning ring 8.

[0020] When the lock handle 3 is used to lock the position of the can door 1, after the lock handle 3 is closed, the locking hole 5 at one end of the lock handle 3 and the axis of the locking rod 6 are on the same horizontal line. After that, when the autoclave is used, the internal pressure of the autoclave increases. As the pressure increases, it will squeeze the piston 7 inside the piston cylinder 4 to move, so that the other end of the locking rod 6 fixed on one side of the piston 7 moves into the locking hole 5, thereby restricting the rotation of the lock handle 3. This prevents the operator from forcibly opening the can door 1 through the lock handle 3, so as to avoid the operator using a hydraulic wrench to forcibly open the locking part when the pressure gauge pointer is inaccurate, while there is still a large pressure inside the can, causing the can door to bounce and injuring the operator. When the internal pressure of the autoclave is very small, close to 0MPa, the pressure is not enough to squeeze and push the locking rod 6 on the piston 7 to lock the locking hole 5. At this time, the spring 10 elastically returns and pushes the piston 7 to move away from the locking hole 5, so that the locking rod 6 releases the lock handle 3. At this time, the lock handle 3 can be rotated.

[0021] In this embodiment: the interior of the limiting plate 2 is an open arc-shaped groove, and the end of the lock handle 3 near the limiting plate 2 is designed as a semi-circle that matches the arc-shaped groove. It should be added that a pull rod is fixedly installed at the upper end of the lock handle 3 near the limiting plate 2. By pulling the pull rod, the lock handle 3 rotates about its pivot position relative to the outer wall of the autoclave.

[0022] In this embodiment, the end of the locking rod 6 near the locking hole 5 is designed as an arc, and the axis of the locking rod 6 is aligned with the center of the locking hole 5. The arc shape at the other end of the locking rod 6 facilitates smooth insertion into the locking hole 5 as it moves towards the interior.

[0023] In this embodiment, a limiting ring 9 is fixedly connected to the surface of the locking rod 6, and one side of the limiting ring 9 rests against the positioning ring 8. When the pressure inside the autoclave is low, approaching 0 MPa, the spring 10 elastically resets and pushes the locking rod 6 to move away from the locking hole 5, causing the other end of the locking rod 6 to move out of the locking hole 5. After the locking rod 6 moves into place, the limiting ring 9 overlaps with one side of the positioning ring 8 to restrict the further movement of the locking rod 6.

[0024] In this embodiment: a pressing member 11 is fixed to the top of the limiting ring 9, and a push-button switch 12 is attached to the top of the pressing member 11. The push-button switch 12 is fixedly installed on the piston cylinder 4, with its upper end extending to the outside of the piston cylinder 4. An indicator light 13 is fixedly connected to the top of the push-button switch 12, and the indicator light 13 is electrically connected to the push-button switch 12. It should be noted that the push-button switch 12 is a normally open button. When the locking rod 6 moves into the locking hole 5, the internal pressure of the autoclave increases, and the pressing member 11 fixed to the top of the limiting ring 9 on the locking rod 6 presses the push-button switch 12 electrically connected to the bottom of the indicator light 13. At this time, the circuit is energized, causing the indicator light 13 to light up, which is convenient for the operator to observe and remind the operator that there is pressure inside the autoclave, so as to avoid forcibly opening the tank door 1.

[0025] In this embodiment, the top of the extruder 11 is designed as a trapezoidal structure, and the bottom of the push-button switch 12 rests on the trapezoidal slope of the top of the extruder 11. Through the trapezoidal structure at the top of the extruder 11, when the pressure inside the autoclave decreases to near 0 MPa, the extruder 11, which is fixed at the top of the limiting ring 9 on the locking rod 6, moves in the reverse direction to reset. After the extruder 11 has moved and reset to its original position, the trapezoidal slope of the extruder 11 releases its pressure on the button end of the push-button switch 12. At this time, the circuit is de-energized, the indicator light 13 goes out, thereby reminding the operator that there is no pressure in the autoclave and the door 1 can be opened.

[0026] In this embodiment: a fixing member 14 is fixedly connected to the surface of the lock handle 3, and a first limiting member 15 and a second limiting member 16 are respectively provided on both sides of the fixing member 14 to restrict its movement, and one side of the first limiting member 15 and the second limiting member 16 are fixed to the outer wall of the autoclave. After the lock handle 3 is flipped upward so that the end of the lock handle 3 is inserted into the limiting plate 2, the fixing member 14 on the surface of the lock handle 3 is attracted to the surface of the first limiting member 15, thereby ensuring that the locking hole 5 at the end of the lock handle 3 is aligned with the center line of the locking rod 6, so that the locking rod 6 can be inserted into the locking hole 5 after the pressure in the autoclave increases.

[0027] In this embodiment, the fixing member 14, the first limiting member 15, and the second limiting member 16 are all magnets, and the fixing member 14 attracts the first limiting member 15 and the second limiting member 16 with opposite magnetic poles. After the lock handle 3 is flipped downwards, the fixing member 14 on the lock handle 3 is released from the attraction of the first limiting member 15. At this time, the fixing member 14 is attracted to the surface of the second limiting member 16, which restricts the stability of the lock handle 3 and facilitates the opening and closing of the can door 1.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0029] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A thermostatic tank door structure, comprising a tank door (1) disposed on a thermostatic tank and a limiting plate (2) fixed on the outer wall of the tank door (1), wherein the limiting plate (2) is provided with a locking handle (3) for restricting the opening of the tank door (1), and the surface of the locking handle (3) is rotatably mounted on the outer wall of the thermostatic tank through a positioning sleeve; Its features are, The tank door structure also includes: The piston cylinder (4) is rotated and installed at one end of the lock handle (3), and one end of the piston cylinder (4) is fixed inside the autoclave. The lock handle (3) is provided with a locking hole (5) at the end inside the piston cylinder (4). Piston (7) located inside piston cylinder (4); A locking rod (6) for inserting into the locking hole (5) to restrict the rotation of the locking handle (3) and a positioning ring (8) sliding on the locking rod (6), wherein the outer ring of the positioning ring (8) is fixed to the inner wall of the piston cylinder (4), and one side of the piston (7) is fixedly connected to one end of the locking rod (6); A spring (10) is fitted onto the locking rod (6), one end of which is fixed to one side of the piston (7), and the other end of which is fixed to one side of the positioning ring (8).

2. The autoclave door structure according to claim 1, characterized in that, The interior of the limiting plate (2) is an open arc-shaped groove, and the end of the lock handle (3) near the limiting plate (2) is set as a semi-circle that matches the arc-shaped groove.

3. The autoclave door structure according to claim 1, characterized in that, The end of the locking rod (6) near the locking hole (5) is set in an arc shape, and the axis of the locking rod (6) is aligned with the center of the locking hole (5).

4. The autoclave door structure according to claim 3, characterized in that, The surface of the locking rod (6) is fixedly connected to a limiting ring (9), and one side of the limiting ring (9) is attached to the positioning ring (8).

5. The autoclave door structure according to claim 4, characterized in that, The top of the limiting ring (9) is fixed with a pressing member (11), and the top of the pressing member (11) is connected to a button switch (12). The button switch (12) is fixedly installed on the piston cylinder (4) and its upper end extends to the outside of the piston cylinder (4). The top of the button switch (12) is fixedly connected with an indicator light (13), and the indicator light (13) is electrically connected to the button switch (12).

6. The autoclave door structure according to claim 5, characterized in that, The top of the extrusion member (11) is a trapezoidal structure, and the bottom of the button switch (12) is placed on the trapezoidal inclined surface at the top of the extrusion member (11).

7. The autoclave door structure according to claim 1, characterized in that, The surface of the lock handle (3) is fixedly connected to a fixing member (14), and the two sides of the fixing member (14) are respectively provided with a first limiting member (15) and a second limiting member (16) to restrict its movement, and one side of the first limiting member (15) and the second limiting member (16) are both fixed to the outer wall of the autoclave.

8. The autoclave door structure according to claim 7, characterized in that, The fixing member (14), the first limiting member (15) and the second limiting member (16) are all magnets, and the fixing member (14) and the first limiting member (15) and the second limiting member (16) have opposite magnetic poles and attract each other.

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