VERTICAL DEVICE FOR THE STERILIZATION AND TREATMENT OF PRE-CRUSHED MEDICAL WASTE

Abstract

Utility Model Title: VERTICAL PRE-GRINDING MEDICAL WASTE STERILIZATION AND TREATMENT DEVICE. This utility model discloses a vertical pre-grinding medical waste sterilization and treatment device comprising a sterilization pressure vessel, a grinder, a lateral pressing mechanism, and a control system. The lateral pressing mechanism includes a pressing plate and a drive assembly connected to said pressing plate. Both the grinder and the pressing plate are disposed within the sterilization pressure vessel, with the pressing plate located in the feed compartment between the inlet and the grinder. The control system is used to control the operating status of the drive assembly, so that this drive assembly drives the pressing plate to move toward the grinder or toward the inner wall of the sterilization pressure vessel.The present utility model allows for the removal of the material bridging above the grinder, facilitating the normal entry of materials into the grinder for grinding, and does not disrupt the flow of medical waste from the feed inlet to the feed compartment. See Figure 1 for the abbreviation.

Description

Title of the invention: VERTICAL DEVICE FOR STERILIZING AND TREATMENT OF PRE-CRUSHED MEDICAL WASTE technical field

[0001] The present utility model relates to the technical field of sterilization and treatment, and more particularly to a vertical device for sterilizing and treating pre-shredding medical waste. TECHNICAL CONTEXT

[0002] A vertical pre-grinding medical waste sterilization and treatment device is a category of sterilization and disinfection devices widely used worldwide. Its sterilization process generally employs a method comprising either superheated steam sterilization alone, microwave sterilization alone, or a combination of superheated steam and microwave sterilization. This device, due to the use of a pressure vessel as the sterilization chamber, offers the advantage of a completely closed system throughout the sterilization process (including pre-grinding), thus minimizing residual gas emissions during treatment. However, it also has the disadvantage that medical waste tends to bridge in the feed compartment, meaning it cannot always fully enter the grinder for grinding.Furthermore, when this situation occurs, since the feed compartment's quick-opening door is usually closed and the grinding process has already begun, the internal air becomes saturated with medical waste fragments and a high concentration of germs. To prevent the dispersal of germs into the air, it is impossible to directly open the feed compartment for manual intervention, meaning that in the event of material bridging, an effective solution is lacking.

[0003] Currently, the dominant emergency solution is a mechanical one, namely the installation of an agitator in the feed compartment to break material bridges. However, its effectiveness is unsatisfactory, and the agitator is easily damaged due to material entanglement. In US patent 20160318030A1, a technical solution for solving the bridging problem by pressing from above is proposed. Specifically, a pressing plate and crossed scissor rods are installed on the upper inner face of the quick-opening door. of the pressure vessel's feed compartment. When the device is not in operation, the pressing plate and scissor-like crossed rods can retract completely into the feed compartment's upper lid without affecting the door's opening or the normal feeding of the feed compartment. When the device is in operation, a drive mechanism pushes the scissor-like crossed rods. The expansion / retraction of the scissor-like crossed rods causes the pressing plate connected to their lower end to move up and down, thus pressing the medical waste toward the grinder for grinding. This patent anticipates that the fragments produced during the grinder's grinding process, once they enter the space between the pressing plate and the upper inner face of the quick-opening door, will accumulate to a certain degree and affect the operation of the scissor-like crossed rods.Therefore, the pressing plate and the inner wall of the feed compartment are designed with a sealing gasket. However, after a certain period of use, due to corrosion, wear, and the adhesion of material fragments, the resistance between the sealing component and the inner wall of the pressure vessel increases sharply, affecting normal operation. Furthermore, this pressing device also presents problems such as a relatively complex structure and difficult maintenance.

[0004] Patent CN220551917U discloses a pressing device with a multi-stage telescopic pressing assembly and proposes a method for installing a pressing mechanism on a vertical container. More specifically, a pressing mechanism is installed inside the feed compartment, passing through the top and connected to a multi-stage telescopic drive mechanism (hydraulic, pneumatic, or electric cylinder). The reciprocating motion of this drive mechanism causes the pressing plate to move up and down, in order to break up waste bridges; however, due to a large working stroke and a relatively high installation height, this imposes constraints on the workshop height. Furthermore, if the top cover is of the pivoting type, the pivoting radius of the drive mechanism is very large during pivoting, which limits the areas of application.Furthermore, multi-stage telescopic rods, after a certain period of operation, often experience an increase in their resistance to retraction due to the adhesion of material fragments, which increases the failure rate.

[0005] On the other hand, conventional and mature crusher pressing mechanisms used in other industries have structural characteristics that are generally unsuitable for installation inside a pressure vessel, particularly in a pressure vessel intended for sterilization. and to the disinfection of medical waste, where internal corrosion is high and sealing requirements are stringent. Some mechanisms, due to their excessive size, cannot be integrated into medium or small-sized pressure vessels used for medical waste treatment. Thus, in vertical medical waste treatment and sterilization devices with pre-grinding, contaminated medical waste forms bridges in the feed compartment, preventing it from entering the grinding stage and making the operational process difficult. Furthermore, there is no safe and reliable emergency method to resolve this problem. Therefore, it is necessary to find a reliable solution to the problem of medical waste bridging in the feed compartment to ensure that medical waste can enter the grinding process unimpeded. DISCLOSURE OF THE CERTIFICATE OF UTILITY

[0006] In this regard, the objective of the present invention is to provide a vertical device for sterilizing and treating pre-grinding medical waste, capable of destroying the bridging of materials above the grinder by a lateral pressing mechanism, in order to promote the normal entry of materials into the grinder for grinding, and without disturbing the feeding of medical waste from the feed inlet to the feed compartment.

[0007] One of the embodiments of the present utility model is a vertical device for sterilizing and treating pre-shredding medical waste, which includes a sterilization pressure vessel, a grinder, a lateral pressing mechanism and a control system, said lateral pressing mechanism includes a pressing plate and a drive assembly connected to the pressing plate, said grinder and the pressing plate are both located inside the sterilization pressure vessel; said control system controls the operating state of the drive assembly, so that said drive assembly drives the pressing plate to move towards said grinder or towards the inner wall of the sterilization pressure vessel.

[0008] Furthermore, said sterilization pressure vessel includes a feeding compartment located above the grinder and a sterilization compartment located below the grinder, said feeding compartment is equipped with a quick-opening feeding door, the sterilization compartment is equipped with a quick-opening discharge door, and said pressing plate is located inside the feeding compartment, between the quick-opening feeding door and the grinder.

[0009] Furthermore, said drive assembly includes a first articulation mechanism, said lower part of said pressing plate is connected, by via the said first articulation mechanism, alongside the said feeding compartment near the crusher.

[0010] Furthermore, said first articulation mechanism includes a first support bearing, a second support bearing and a rotating shaft, said first support bearing and said second support bearing are both fixed to the feed compartment, said rotating shaft is fixed to said pressing plate, and the two ends of the rotating shaft are respectively in rotation with said first support bearing and said second support bearing.

[0011] In addition, said training set also includes a first training element or a second training element;

[0012] Among these, said first drive element comprises a second articulation structure, a transmission rod and a first drive member, said first drive member is connected to the front end of the transmission rod, said transmission rod is inclined downwards from the outside inwards and extends into the feed compartment, and the rear end of the transmission rod is connected to the pressing plate by the second articulation structure, said second articulation structure comprises a guide groove disposed on the pressing plate and a sliding and rotating shaft connected to the rear end of the transmission rod, said sliding and rotating shaft is connected to the guide groove so as to be able to slide and rotate;the movement of the transmission rod driven by said first drive element allows the pressing plate to pivot towards the grinder or towards the inner wall of the sterilizing pressure vessel;

[0013] Said second drive element comprises a second drive member and a transmission structure, said second drive member is rotationally connected to the rotating shaft via the transmission structure; the movement of the rotating shaft driven by said second drive member and the transmission structure allows the pressing plate to pivot towards the grinder or towards the inner wall of the sterilization pressure vessel.

[0014] In addition, said pressing plate is equipped, on its upper part, with a guide deflector; said pressing plate can be a flat plate, an arched plate, a grid plate or a perforated plate.

[0015] The beneficial effects of the present utility model are as follows: the present utility model offers an effective solution to the problem of material arching in a vertical pre-shredding medical waste sterilization and treatment device. When materials accumulate above the shredder and form a material arch, the drive assembly moves the pressing plate towards the shredder, thereby breaking up said arch. of materials above the crusher and to promote the normal entry of materials into the crusher for grinding. After pressing, the drive assembly can automatically return the pressing plate to its initial position, close to the inner wall of the feed compartment, without affecting the flow of medical waste from the feed port to the feed compartment. DESCRIPTION OF THE FIGURES

[0016] In order to make the objective, the technical solution and the beneficial effects of the present utility model clearer, the present utility model provides the following figures for explanatory purposes:

[0017] Fig. 1 shows a schematic view of the structure of example embodiment 1;

[0018] Figure [Fig. 2] shows a schematic view of the cooperation of the pressing plate, of the transmission rod and the rotating shaft in embodiment example 1;

[0019] Fig. 3 shows a schematic view of the structure of example embodiment 2;

[0020] Figure 4 shows a schematic view of first-level cooperation support, second support bearing, rotating shaft and second drive element in embodiment example 2;

[0021] Fig. 5 shows a schematic view of the peripheral structure of the first support bearing in embodiment example 2;

[0022] Fig. 6 shows a schematic view of the peripheral structure of the second support bearing in embodiment example 2.

[0023] The references in the figures are as follows: 1 - sterilization pressure vessel, 2 - grinder, 3 - lateral pressing mechanism, 4 - control system;

[0024] 11 - feeding compartment, 12 - sterilization compartment, 13 - door quick feed opening, 14 - quick unloading opening door;

[0025] 21 - pressing plate, 22 - first support bearing, 23 - second bearing support, 24 - rotating shaft, 25 - second drive element, 26 - first drive element, 27 - transmission rod, 28 - transmission structure, 29 - guide deflector;

[0026] 31 - first driver's seat, 32 - movable axle, 33 - sealing gasket, 34 - second driver's seat, 35 - sealing sleeve, 36 - first part of mounting tube, 37 - second part of mounting tube. DETAILED DESCRIPTION OF THE CERTIFICATE OF UTILITY

[0027] The technical solution of the present utility model will be described in detail below, in combination with figures and embodiment examples.

[0028] Example of embodiment 1:

[0029] As illustrated in Figures 1 and 2, a vertical pre-crushing medical waste sterilization and treatment device according to this embodiment comprises a sterilization pressure vessel 1, a crusher 2, a lateral pressing mechanism 3 and a control system 4, said lateral pressing mechanism 3 comprising a pressing plate 21 and a drive assembly connected to said pressing plate 21, said crusher 2 and said pressing plate 21 both being disposed inside said sterilization pressure vessel 1; said control system 4 is used to control the operating state of said drive assembly, so that said drive assembly causes said pressing plate 21 to move towards the crusher 2 or towards the inner wall of said sterilization pressure vessel 1.

[0030] The initial position of the pressing plate 21 is that it is close to the inner wall of the sterilization pressure vessel 1. When material accumulates above the grinder 2 and forms a material bridge, the drive assembly moves the pressing plate 21 towards the grinder 2, thereby breaking up the material bridge above the grinder 2 and facilitating the normal entry of material into the grinder 2 for grinding. After grinding, the drive assembly can automatically return the pressing plate 21 to its initial position near the inner wall of the feed compartment 11, without affecting the flow of medical waste from the feed port to the feed compartment 11.

[0031] The lateral pressing mechanism 3 is installed on the side wall of the sterilizing pressure vessel 1. The lateral pressing mechanism 3 is not connected to the quick-opening feed door 13 and does not occupy the space above the quick-opening feed door 13. When the quick-opening feed door 13 is opened, the lateral pressing mechanism 3 does not encroach on the peripheral space of the quick-opening feed door 13, thus offering a considerable advantage in terms of installation height and layout difficulty.

[0032] The vertical pre-shredding medical waste treatment device according to this example may use a superheated steam sterilization device, a microwave sterilization device, or a device using synergistic sterilization by superheated steam and microwaves.

[0033] In this example, the sterilization pressure vessel 1 comprises a feed compartment 11 located above the grinder 2 and a sterilization compartment 12 located below the grinder 2. The feed compartment 11 is equipped with a quick-opening feed door 13, and the sterilization compartment 12 is equipped with a quick-opening discharge door 14. The Pressing plate 21 is arranged inside the feeding compartment 11, between the quick-opening feeding door 13 and the crusher 2.

[0034] The quick-opening feed door 13 is installed at the inlet of the feed compartment 11. When the quick-opening feed door 13 is open, medical waste can be introduced into the feed compartment 11 through the inlet; when the quick-opening feed door 13 is closed, it seals the feed compartment 11, transforming the sterilization pressure vessel 1 into a closed pressure vessel. The grinder 2 is placed in the middle of the sterilization pressure vessel 1.

[0035] In the present example, the drive assembly includes a first articulation mechanism, the lower part of the pressing plate 21 being connected, by the first articulation mechanism, to the side of the feed compartment 11 near the crusher 2.

[0036] In the present example, the first articulation mechanism comprises a first support bearing 22, a second support bearing 23, and a rotating shaft 24. The first support bearing 22 and the second support bearing 23 are both fixed to the feed compartment 11, while the rotating shaft 24 is fixed to the pressing plate 21. The two ends of the rotating shaft 24 are respectively mounted for rotation on the first support bearing 22 and the second support bearing 23. The first articulation mechanism allows the pressing plate 21 to pivot about the axis of the rotating shaft 24.

[0037] In the present example, the training set also includes a first training element;

[0038] The first drive element comprises a second articulation structure, a transmission rod 27 and a first drive member 26. The first drive member 26 is connected to the front end of the transmission rod 27. The transmission rod 27 is inclined downwards from the outside inwards and extends inside the feed compartment 11. The rear end of the transmission rod 27 is connected to the pressing plate 21 by the second articulation structure, the second articulation structure comprises a guide groove on the pressing plate 21 and a sliding and rotating shaft connected to the rear end of the transmission rod 27, the sliding and rotating shaft being mounted in the guide groove so as to be able to slide and pivot.When the first drive member 26 actuates the transmission rod 27, the pressing plate 21 can pivot towards the grinder 2 or towards the inner wall of the sterilizing pressure vessel 1.

[0039] The first drive element 26 can be a motor with an extendable output shaft, a pneumatic cylinder, or a hydraulic cylinder. The rotation of the plate The pressing action 21 is performed by the first drive element. When pressing is required, the output shaft of the first drive element 26 extends to drive the transmission rod 27. The rear end of the transmission rod 27 causes the pressing plate 21 to pivot. This, in turn, rotates the pressing plate 21 towards the crusher 2, allowing the pressing plate 21 to break up the stable structure of the material bridge above the crusher 2 and facilitating the normal flow of material towards the crusher 2 for grinding.

[0040] After pressing, the output shaft of the first drive element 26 retracts to drive the transmission rod 27. The rear end of the transmission rod 27 pulls the pressing plate 21 to pivot. Thus, the first drive element rotates the pressing plate 21 away from the crusher 2 until the pressing plate 21 reaches a position close to the inner wall of the sterilization pressure vessel 1. At this point, the pressing plate 21 assumes a vertical orientation in the up-down direction, preventing any interference with the introduction of waste through the inlet of the feed compartment 11.

[0041] As the point of application of the force of the transmission rod 27 of the first drive element is located near the second articulation structure, while the center of rotation of the pressing plate 21 is near the first articulation structure, the point of application of the force and the center of rotation are offset, which lengthens the lever arm and improves the transmission efficiency and energy transfer of the operating mode of the first drive element.

[0042] During the rotation of the pressing plate 21 driven by the transmission rod 27, as the axes of the transmission rod 27 and the output shaft of the first drive member 26 remain fixed, and the guide groove and the sliding and rotating axis allow relative sliding and rotation, when the pressing plate 21 is driven by the transmission rod 27 to pivot, the position of the axis of the rotating shaft 24 remains fixed, the pressing plate 21 pivots around the axis of the rotating shaft 24, and the coupling structure of the guide groove and the sliding and rotating axis can prevent the blocking of the transmission rod 27, the pressing plate 21 and the feeding compartment 11.

[0043] In the present example, the top of the pressing plate 21 is equipped with a guide deflector 29. The pressing plate 21 can be a flat plate, an arched plate, a grid plate or a perforated plate.

[0044] The guide deflector 29 is an inclined plate. When the pressing plate 21 is close to the inner wall of the sterilizing pressure vessel 1, the upper end of the guide deflector 29 presses against the inner wall. of the sterilization pressure vessel 1, and the lower end of the guide deflector 29 is connected to the pressing plate 21. The guide deflector 29 prevents materials from falling into the gap between the pressing plate 21 and the side wall of the sterilization pressure vessel 1, thus preventing the materials from affecting the return of the pressing plate 21. Furthermore, since there is a gap between the pressing plate 21 and the rotating shaft 24 on one side, and the inner wall of the feed compartment 11 on the other, and since the bottom of this gap is completely open, the debris produced during grinding falls into this gap and then falls through the lower opening into the feed compartment 11.

[0045] The grid plate and the perforated plate make it possible to reduce the weight of the pressing plate 21.

[0046] Example of embodiment 2:

[0047] As illustrated in Figures 3 to 6, the present example relates to a vertical pre-crushing medical waste treatment device, comprising a sterilization pressure vessel 1, a crusher 2, a lateral pressing mechanism 3, and a control system 4. The lateral pressing mechanism 3 comprises a pressing plate 21 and a drive assembly connected to the pressing plate 21. The crusher 2 and the pressing plate 21 are both located inside the sterilization pressure vessel 1. The control system 4 is used to control the operating state of the drive assembly, so that this drive assembly causes the pressing plate 21 to move towards the crusher 2 or towards the inner wall of the sterilization pressure vessel 1.

[0048] The vertical pre-grinding medical waste treatment device according to this example may use a superheated steam sterilization device, a microwave sterilization device, or a device using synergistic sterilization by superheated steam and microwaves.

[0049] In the present example, the sterilization pressure vessel 1 comprises a feeding compartment 11 located above the grinder 2 and a sterilization compartment 12 located below the grinder 2. The feeding compartment 11 is equipped with a quick-opening feeding door 13, and the sterilization compartment 12 is equipped with a quick-opening discharge door 14. The pressing plate 21 is disposed inside the feeding compartment 11, between the quick-opening feeding door 13 and the grinder 2.

[0050] In the present example, the drive assembly includes a first articulation mechanism, the lower part of the pressing plate 21 being connected, by the first articulation mechanism, to the side of the feed compartment 11 near the crusher 2.

[0051] In the present example, the first articulation mechanism comprises a first support bearing 22, a second support bearing 23, and a rotating shaft 24. The first support bearing 22 and the second support bearing 23 are both fixed to the feed compartment 11, while the rotating shaft 24 is fixed to the pressing plate 21. The two ends of the rotating shaft 24 are respectively mounted for rotation on the first support bearing 22 and the second support bearing 23. The first articulation mechanism allows the pressing plate 21 to pivot about the axis of the rotating shaft 24.

[0052] In the present example, the drive assembly also includes a second drive element, which comprises a second drive member 25 and a transmission structure 28. The second drive member 25 is rotationally connected to the rotating shaft 24 via the transmission structure 28. When the second drive member 25 actuates the transmission structure 28, the rotating shaft 24 rotates, allowing the pressing plate 21 to pivot towards the grinder 2 or towards the inner wall of the sterilizing pressure vessel 1.

[0053] The second drive element 25 can be a motor with a rotating output shaft, a pneumatic cylinder, or a hydraulic cylinder. The transmission structure 28 can be a belt, gear, chain, or other similar transmission. The rotation of the output shaft of the second drive element 25 is transmitted by the transmission structure 28 to rotate the rotating shaft 24 and the movable axis 32. When pressing is required, the second drive element 25, the transmission structure 28, and the rotating shaft 24 cause the pressing plate 21 to pivot towards the crusher 2, allowing the pressing plate 21 to break through the stable structure of the material bridge above the crusher 2, thus facilitating the normal flow of material towards the crusher 2 for grinding.

[0054] After pressing, the second drive member 25, the transmission structure 28 and the rotating shaft 24 cause the pressing plate 21 to pivot in the direction away from the crusher 2, until the pressing plate 21 reaches a position close to the inner wall of the sterilization pressure vessel 1. At this moment, the pressing plate 21 adopts a vertical orientation in the up-down direction, preventing any interference with the introduction of waste through the inlet of the feed compartment 11.

[0055] In this example, the feed compartment 11 is equipped with a first mounting tube section 36 for installing the first support bearing 22. The first support bearing 22 comprises a first guide seat 31, a movable shaft 32, and a sealing ring 33. The first guide seat 31 is connected to the first mounting tube section 36, the movable shaft 32 is rotatably inserted into the first guide seat 31, and the first mounting tube section 36. One end of the movable shaft 32 is fixed to the rotating shaft 24, while the other end of the movable shaft 32 protrudes from the first driving seat 31 and is connected to the transmission structure 28. The sealing joint 33 is disposed between the first driving seat 31 and the movable shaft 32.

[0056] More specifically, the first drive seat 31 is drilled in its middle and has an internal thread, while the first mounting tube portion 36 has an external thread. The internal thread of the first drive seat 31 is connected to the external thread of the first mounting tube portion 36, allowing the movable shaft 32 and the rotating shaft 24 to rotate synchronously (for example, via a key or a splined gear). The rotation of the output shaft of the second drive member 25 is transmitted by the transmission structure 28 to drive the movable shaft 32 and the rotating shaft 24 simultaneously.

[0057] In this example, the feed compartment 11 is also equipped with a second mounting tube section 37 for installing the second support bearing 23. The second support bearing 23 comprises a second guide seat 34 and a sealing sleeve 35. The second guide seat 34 is inserted into the second mounting tube section 37; one end of the second guide seat 34 is connected to the second mounting tube section 37, and the other end of the second guide seat 34 is connected to the rotating shaft 24 so as to be able to rotate relative to it. The sealing sleeve 35 is located at the end of the second mounting tube section 37 that is furthest from the inner chamber of the feed compartment 11.

[0058] More specifically, the second mounting tube portion 37 has an internal thread, while the second drive seat 34 and the sealing sleeve 35 have external threads. The internal thread of the second mounting tube portion 37 is connected to the external threads of the second drive seat 34 and the sealing sleeve 35, allowing the rotating shaft 24 to rotate relative to the second drive seat 34.

[0059] Finally, it should be noted that the descriptions of the devices and methods presented in the examples above are provided for illustrative purposes only and should not be considered limiting. Although preferred examples have been described in detail, those with technical expertise in the field will understand that it is always possible to make equivalent modifications, adaptations, or replacements to these devices and methods without such adjustments departing from the spirit or scope of the present invention.

Claims

Demands

1. A vertical pre-crushing medical waste sterilization and treatment device, characterized in that it comprises a sterilization pressure vessel (1), a crusher (2), a lateral pressing mechanism (3) and a control system (4), said lateral pressing mechanism (3) comprising a pressing plate (21) and a drive assembly connected to said pressing plate (21), said crusher (2) and said pressing plate (21) both being disposed inside the sterilization pressure vessel (1); said control system (4) serving to control the operating state of said drive assembly, so that said drive assembly causes said pressing plate (21) to move towards said crusher (2) or towards the inner wall of said sterilization pressure vessel (1).

2. Vertical device for sterilizing and treating medical waste with pre-grinding according to claim 1, characterized in that said sterilization pressure vessel (1) comprises a feed compartment (11) located above said grinder (2) and a sterilization compartment (12) located below the grinder (2), said feed compartment (11) is equipped with a quick-opening feed door (13), said sterilization compartment (12) is equipped with a quick-opening discharge door (14), said pressing plate (21) is disposed inside the feed compartment (11) between said quick-opening feed door (13) and said grinder (2).

3. Vertical device for sterilizing and treating medical waste with pre-grinding according to claim 2, characterized in that the drive assembly includes a first articulation mechanism, the lower part of said pressing plate (21) is connected, by the first articulation mechanism, to the side of said feeding compartment (11) near the grinder (2).

4. A vertical pre-crushing medical waste sterilization and treatment device according to claim 3, characterized in that said first articulation mechanism comprises a first support bearing (22), a second support bearing (23) and a rotating shaft (24), said first support bearing (22) and said second support bearing (23) are both fixed to the feeding compartment (11), said rotating shaft (24) is fixed to said pressing plate (21), the two ends of said rotating shaft (24) are respectively engaged in a rotational manner with said first support bearing (22) and said second support bearing (23).

5. Vertical device for sterilizing and treating medical waste with pre-grinding according to claim 4, characterized in that said drive assembly also includes a first drive element or a second drive element;said first drive element comprises a second articulation structure, a transmission rod (27) and a first drive member (26), said first drive member (26) is connected to the front end of the transmission rod (27), said transmission rod (27) is inclined downwards from the outside inwards and extends into the feed compartment (11), and the rear end of the transmission rod (27) is connected to the pressing plate (21) by the second articulation structure, said second articulation structure comprises a guide groove disposed on the pressing plate (21) and a sliding and rotating shaft connected to the rear end of the transmission rod (27), said sliding and rotating shaft is connected to the guide groove so as to be able to slide and rotate;the movement of the transmission rod (27) driven by said first drive member (26) allows the pressing plate (21) to pivot towards the crusher (2) or towards the inner wall of the sterilization pressure vessel (1); said second drive member comprises a second drive member (25) and a transmission structure (28), said second drive member (25) is rotationally connected to the rotating shaft (24) via the transmission structure (28); the movement of the rotating shaft (24) driven by said second drive member (25) and the transmission structure (28) allows the pressing plate (21) to pivot towards the crusher (2) or towards the inner wall of the sterilization pressure vessel (1).

6. Vertical device for sterilizing and treating medical waste with pre-grinding according to claim 1, characterized in that said pressing plate (21) is equipped, on its upper part, with a guide deflector (29); said pressing plate (21) is a flat plate, an arched plate, a grid plate or a perforated plate.

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