Lifting switch device for sealing door of horizontal double-leaf pulsation vacuum high-pressure steam sterilizer

Abstract

The utility model relates to a lifting switch device for a sealing door of a horizontal double-leaf pulse vacuum high-pressure steam sterilizer, which comprises a hinge plate rotationally connected with a pot body of the sterilizer through a vertical shaft, and a transmission nut fixedly arranged on the hinge plate, a door body of the sealing door is fixedly provided with a driving motor for driving the transmission screw rod to rotate; a plurality of baffles distributed at intervals in the vertical direction are fixedly arranged on the side wall, away from the hinge plate, of the pot body, tooth blocks corresponding to the baffles are fixedly arranged on the door body, the distance between every two adjacent baffles is matched with the length of the tooth blocks in the vertical direction, and the distance between every two adjacent tooth blocks is matched with the length of the baffles in the vertical direction. The device solves the problems that a traditional transverse transmission mechanism arranged in the width direction of the sterilizer is limited in installation space and not suitable for manufacturing equipment with narrow width, and the traditional transverse transmission mechanism is too complex, high in manufacturing cost and not suitable for later maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to hospital infection control equipment technical field especially the sealing door field of horizontal double-leaf pulsating vacuum high pressure steam sterilizer relates to a sealing door lifting switch device of horizontal double-leaf pulsating vacuum high pressure steam sterilizer. BACKGROUND

[0002] The double-leaf pulsating vacuum high pressure steam sterilizer is used for the high temperature sterilization treatment of glassware, instruments, dressings, rubber products and other temperature-resistant and humidity-resistant articles in the hospital infection control center and various laboratories.

[0003] The double-leaf pulsating vacuum high pressure steam sterilizer usually adopts a horizontal structure and mainly comprises a pot body and a sealing door. SUMMARY

[0004] The utility model discloses a sealing door lifting switch device of horizontal double-leaf pulsating vacuum high pressure steam sterilizer, realizes the locking after the vertical movement of the sealing door body, and low manufacturing cost is convenient to maintain.

[0005] The utility model discloses a sealing door lifting switch device of horizontal double-leaf pulsating vacuum high pressure steam sterilizer, realizes the locking after the vertical movement of the sealing door body, and low manufacturing cost is convenient to maintain.

[0006] The hinged plate supports the door body of the sealing door, and when the hinged plate rotates around the vertical shaft, the sealing door is opened and closed, when the sealing door is in the open state, the gap between the tooth block and the two baffles corresponds, after the door body of the sealing door is closed, the driving motor drives the transmission screw to rotate, the thread action between the transmission screw and the transmission nut is utilized, the screw and the driving motor are lifted as a whole, so that the door body is lifted, each tooth block is moved to the rear of the corresponding baffle, the tooth block is blocked by the baffle, the door body is prevented from being opened, and locking is realized.

[0007] As an optimization, a guide shaft is further fixed on the door body and arranged vertically, a guide ring is sleeved on the guide shaft and fixedly connected with the hinged plate, and the guide ring is in vertical sliding connection with the guide shaft. Through the setting of the guide shaft and the guide ring, the movement of the door body is guided during the lifting of the door body, the stability of the movement of the door body is improved, and the inclination of the door body is avoided.

[0008] As an optimization, an upper limit position switch and a lower limit position switch are fixed on the door body, an upper limit plate that is adapted to the upper limit position switch and located above the upper limit position switch is fixed on the hinged plate, and a lower limit plate that is adapted to the lower limit position switch and located below the lower limit position switch is fixed on the hinged plate. Through the optimization, when the upper limit position switch touches the upper limit plate or the lower limit position switch touches the lower limit plate during the vertical movement of the door body, the driving motor stops working, so that the accuracy of the movement position of the door body is ensured, and the automation level is improved.

[0009] As an optimization, the hinged plate comprises a main plate body, an upper plate body and a lower plate body that extend to the same side from the upper end and the lower end of the main plate body respectively, a sleeve that is sleeved on the vertical shaft is fixed on the main plate body, the upper limit plate and the guide ring are fixedly connected with the upper plate body, the lower limit plate and the transmission nut are fixedly connected with the lower plate body, and the upper limit position switch and the lower limit position switch are located between the upper plate body and the lower plate body. The hinged plate of the optimization is provided with a structure, the distance between the guide ring and the transmission nut is increased, so that the acting length on the door body is increased, the stability of the door body is improved, the weight of the hinged plate is reduced, the installation of the limit position switches and the limit plates is facilitated, the structure is more compact and reasonable, the horizontal length of the upper plate body and the lower plate body is utilized to make the transmission nut and the guide ring closer to the middle position of the door body, and the stability of the door body is further improved.

[0010] As an optimization, a trigger plate is fixed on the side of the door body away from the vertical shaft, and a side limit position switch that is adapted to the trigger plate is installed on the pot body. Through the optimization, after the trigger plate triggers the side limit position switch during the closing of the door body of the sealing door, the driving motor is started, and the lifting of the door body due to the incomplete closing of the sealing door is avoided.

[0011] As optimization, the support seat is arranged on the door body and located at the side of the transmission nut away from the driving motor, and the screw rod extends to the support seat and is rotationally connected with the support seat. The optimization scheme increases the support range of the transmission screw rod by arranging the support seat, and further improves the stability of the transmission screw rod.

[0012] As optimization, the mounting ring is arranged on the hinge plate, the inner hole of the mounting ring is matched with the outer contour of the transmission nut, and the set screw is connected on the side wall of the mounting ring by screwing and is radially pressed to the transmission nut. The optimization scheme fixes the transmission nut through the set screw and the mounting ring, which is simple in structure and convenient to disassemble and assemble.

[0013] The utility model discloses the beneficial effects are: through the setting of hinge plate, transmission screw rod, transmission nut and driving motor, realize through the lifting of sealed door door body and open and shut door, solve the installation space limited of traditional sterilizer width direction arrangement horizontal transmission mechanism The technical problem of existing, through the setting of upper and lower limit travel switch, guarantee the accuracy of door body lifting position. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is structure schematic diagram of the utility model;

[0015] Figure 2 It is side view of the utility model;

[0016] Figure 3 It is top view of the utility model;

[0017] Figure 4 It is hinge plate structure schematic diagram of the utility model;

[0018] In the drawing:

[0019] 1, door handle, 2, side limit travel switch, 3, driving motor, 4, motor support, 5, door body, 6, transmission screw rod, 7, transmission nut, 8, hinge plate, 9, upper limit plate, 10, upper limit travel switch, 11, lower limit travel switch, 12, lower limit plate, 13, baffle, 14, sealing rubber strip, 15, pot body, 16, guide device, 17, vertical shaft, 18, tooth block, 19, mounting ring, 20, guide shaft, 21, guide ring, 22, sleeve, 23, support seat, 24, clamping block. DETAILED DESCRIPTION

[0020] To clearly illustrate the technical features of the scheme, the following through specific embodiment, the scheme is described.

[0021] The horizontal double-door pulsed vacuum high-pressure steam sterilizer includes a pot body 15 and a sealing door mounted on the pot body. The inner cavity of the pot body is a space for high-pressure steam sterilization. The sealing door includes a door body 5 and a door handle 1 fixed to the outer side of the door body. The sealing door is opened or closed by gripping the door handle. The door body serves as a device to seal the end of the pot body and form a sealed pressure-bearing space. It is installed at the front end of the pot body and connected to the pot body by a rotating hinge. This embodiment improves upon the existing lateral transmission mechanism for opening the sealing door.

[0022] Specifically, such as Figures 1-3 The diagram illustrates a lifting and lowering switch device for the sealing door of a horizontal double-door pulsed vacuum high-pressure steam sterilizer. It includes a hinge plate 8 rotatably connected to the sterilizer's pot body 15 via a vertical shaft 17, and a transmission nut 7 fixed to the hinge plate 8. The transmission nut 7 is threadedly connected to a vertically arranged transmission screw 6, and both the transmission nut and the transmission screw have trapezoidal threads. A drive motor 3, which drives the transmission screw 6, is fixedly mounted on the door body 5. The transmission screw is located in the middle of the door body in the left-right direction to ensure the door's stability. The drive motor provides power for the door to lift and lower, thus locking the door. The motor shaft of the drive motor is connected to the transmission screw via a key. For easy installation of the drive motor, a motor bracket 4 is bolted to the door body, and the top flange of the drive motor is bolted to the motor bracket.

[0023] To facilitate the installation of the transmission nut, this embodiment has a mounting ring 19 fixed on the hinge plate. The inner hole of the mounting ring is adapted to the outer contour of the transmission nut, and a set screw is threaded onto the side wall of the mounting ring, which pushes radially towards the transmission nut. The transmission nut is fixed by the set screw. After loosening the set screw, the transmission nut can be disassembled, which improves the convenience of maintenance.

[0024] A plurality of vertically spaced baffles 13 are fixedly installed on the side wall of the pot body 15 away from the hinge plate. A toothed block 18 corresponding to the baffles 13 is fixedly installed on the door body 5. The distance between two adjacent baffles is adapted to the vertical length of the toothed block, and the distance between two adjacent toothed blocks is adapted to the vertical length of the baffle. When the door is closed, the toothed block is located on the side of the baffle closest to the pot body. The baffle blocks the toothed block, preventing the door from rotating and opening, thus locking the door.

[0025] A vertically oriented guide shaft 20 is also fixed to the door body 5. A guide ring 21, which is fixed to the hinge plate 8, is sleeved on the guide shaft 20. The guide ring 21 and the guide shaft 20 are slidably connected vertically. To facilitate the installation of the guide shaft, a first mounting plate is bolted to the door body in this embodiment. Two fixed seats distributed vertically are fixed on the first mounting plate. The two ends of the guide shaft are respectively fixed to the two fixed seats. The fixed seats and the guide shaft form a guide device 16. The guide device provides guidance for the lifting and lowering of the door body and prevents the door body from tilting.

[0026] An upper limit switch 10 and a lower limit switch 11 are fixedly mounted on the door body 5. An upper limit plate 9, adapted to and located above the upper limit switch 10, and a lower limit plate 12, adapted to and located below the lower limit switch 11, are fixedly mounted on the hinge plate 8. Both the upper and lower limit switches are electrically connected to the drive motor, with the upper limit switch located above the lower limit switch.

[0027] like Figure 4 As shown, the hinge plate includes a main body, and an upper plate and a lower plate extending to the same side from the upper and lower ends of the main body, respectively. A sleeve 22 is fixedly mounted on the main body and sleeved on the vertical shaft. The upper limit plate 9 and the guide ring 21 are both fixedly connected to the upper plate, and the lower limit plate 12 and the transmission nut 7 are both fixedly connected to the lower plate. The upper limit limit switch and the lower limit limit switch are located between the upper plate and the lower plate.

[0028] A locking block 24 is bolted to the door body. The locking block 24 has a groove that matches the thickness of one vertical section of the hinge plate. One vertical section of the hinge plate extends into the groove and slides vertically with it. In this embodiment, the groove matches the vertical section of the main body located between the upper and lower plates. The locking block further improves the stability of the door body.

[0029] In this embodiment, there are two sleeves 22, distributed vertically. Each sleeve has a support cylinder fixed to the pot body at its lower end. A vertical shaft passes through both the sleeve and the support cylinder. A support nut, threaded onto the vertical shaft and resting on the upper surface of the support cylinder, is connected to the vertical shaft. Limiting nuts, located on the upper and lower sides of the hinge plate, are also threaded onto the vertical shaft. The support cylinder supports the vertical shaft, and the support nuts on the vertical shaft support the hinge plate.

[0030] To better determine whether the door is in a height-adjustable state, in this embodiment, a trigger plate is fixedly installed on the side of the door away from the vertical axis. A side limit switch 2 adapted to the trigger plate is installed on the pot body. When the door is closed and the side limit switch 2 is triggered by the trigger plate, it indicates that the door is closed in place, the toothed block is located inside the baffle, and the door can be raised or lowered. The side limit switch serves as a position detection device for the sealed door being closed in place. In this embodiment, the side limit switch is installed on the right side of the door.

[0031] A support seat 23 is fixedly mounted on the door body, located on the side of the transmission nut away from the drive motor. The transmission screw 6 extends to the support seat 23 and is rotatably connected to the support seat. By providing the support seat, the support range for the transmission screw is increased, preventing the transmission screw from jumping and further improving the stability of the door's lifting and lowering.

[0032] The method of using the lifting switch device in this embodiment is as follows:

[0033] When it is necessary to open the locked sealed door 5: After clicking the open button, the sealing strip 14 installed inside the sealing groove of the pot body 15 is depressurized and retracts. The drive motor 3 is energized and starts to rotate, thereby driving the transmission screw 6 to rotate synchronously. Because the transmission screw 6 cooperates with the transmission nut 7 and the hinge plate 8 is fixed in the vertical direction, the door body 5 is raised by the action of the thread. When the door is about to be fully opened, the upper limit limit switch 10 touches the upper limit limit switch baffle 9, the drive motor 3 is de-energized and stops rotating, and the toothed block of the door body 5 is misaligned with the baffle 13 on the pot body. At this time, the door body 5 can be opened by pulling the door handle 1 to take out the sterilized items.

[0034] When it is necessary to close the locked and sealed door 5: Push the door handle 1 to push the door 5 to the position as follows: Figure 3 When the door is in the closed state, the side limit switch 2 is activated (if this switch is not activated, clicking the close button should have no effect). After clicking the close button, the drive motor 3 is energized and starts to rotate in the opposite direction to the opening direction, thereby driving the transmission screw 6 to rotate synchronously. Because the transmission screw 6 cooperates with the transmission nut 7 and the hinge plate 8 is fixed vertically, the door 5 descends. When the door is about to close completely, the lower limit switch 11 touches the lower limit switch baffle 12, the drive motor 3 is de-energized and stops rotating, and the toothed block of the door 5 coincides with the baffle 13 on the pot body. At this time, the sealing strip 14 installed in the sealing groove of the pot body 15 is compressed with compressed air and pressed against the inner side of the sealing door 5, thus sealing the pressure space inside the pot body 15. The above process ends and the equipment enters the sterilization stage. The sealing structure of the sealing strip adopts existing technology and will not be described in detail here.

[0035] The automatic lifting and lowering switch device for the sealing door of the horizontal double-door pulsed vacuum high-pressure steam sterilizer of this utility model can realize the automatic lifting and lowering of the sealing door of the sterilizer to open and close the door. This device solves the problems of limited installation space of the traditional horizontal transmission mechanism in the width direction of the sterilizer, which is not suitable for manufacturing narrow equipment, and the traditional horizontal transmission mechanism is too complicated, has high manufacturing cost, and is not easy to maintain later.

[0036] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A lifting and lowering switch device for the sealing door of a horizontal double-door pulsed vacuum high-pressure steam sterilizer, characterized in that: It includes a hinge plate (8) rotatably connected to the pot body (15) of the sterilizer via a vertical shaft (17), and a transmission nut (7) fixed on the hinge plate (8). The transmission nut (7) is connected to a transmission screw (6) arranged vertically by a thread. A drive motor (3) for driving the transmission screw (6) to rotate is fixed on the door body (5) of the sealing door. The pot body (15) has several vertically spaced baffles (13) fixed on the side wall away from the hinge plate. The door body (5) has toothed blocks (18) corresponding to the baffles (13) fixed on it. The distance between two adjacent baffles is adapted to the vertical length of the toothed blocks, and the distance between two adjacent toothed blocks is adapted to the vertical length of the baffles.

2. The horizontal double-door pulsating vacuum high-pressure steam sterilizer sealing door lifting switch device according to claim 1, characterized in that: The door body (5) is also fixed with a guide shaft (20) arranged vertically. A guide ring (21) is sleeved on the guide shaft (20) and fixed to the hinge plate (8). The guide ring (21) and the guide shaft (20) are slidably connected vertically.

3. The horizontal double-door pulsating vacuum high-pressure steam sterilizer sealing door lifting switch device according to claim 2, characterized in that: The door body (5) is fixedly equipped with an upper limit limit switch (10) and a lower limit limit switch (11). The hinge plate (8) is fixedly equipped with an upper limit plate (9) that is adapted to the upper limit limit switch (10) and located above the upper limit limit switch, and a lower limit plate (12) that is adapted to the lower limit limit switch (11) and located below the lower limit limit switch.

4. The horizontal double-door pulsating vacuum high-pressure steam sterilizer sealing door lifting switch device according to claim 3, characterized in that: The hinge plate includes a main body, and an upper plate and a lower plate extending to the same side from the upper and lower ends of the main body, respectively. A sleeve (22) is fixedly mounted on the main body and sleeved on the vertical shaft. The upper limit plate (9) and the guide ring (21) are both fixedly connected to the upper plate. The lower limit plate (12) and the transmission nut (7) are both fixedly connected to the lower plate. The upper limit travel switch and the lower limit travel switch are located between the upper plate and the lower plate.

5. The lifting and lowering switch device for the sealing door of the horizontal double-door pulsed vacuum high-pressure steam sterilizer according to claim 1, characterized in that: A trigger plate is fixedly installed on the side of the door away from the vertical axis, and a side limit switch (2) adapted to the trigger plate is installed on the pot body.

6. The lifting and lowering switch device for the sealing door of the horizontal double-door pulsed vacuum high-pressure steam sterilizer according to claim 1, characterized in that: The door body is fixedly provided with a support seat (23) located on the side of the transmission nut away from the drive motor, and the transmission screw (6) extends to the support seat (23) and is rotatably connected to the support seat.

7. The horizontal double-door pulsating vacuum high-pressure steam sterilizer sealing door lifting switch device according to claim 1, characterized in that: A mounting ring (19) is fixedly provided on the hinge plate. The inner hole of the mounting ring is adapted to the outer contour of the transmission nut, and a set screw that extends radially to the transmission nut is threadedly connected to the side wall of the mounting ring.

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