CN216439661U

CN216439661U - Biological safety type clamping type steam sterilizer

Info

Publication number: CN216439661U
Application number: CN202122930773.8U
Authority: CN
Inventors: 郑迎春
Original assignee: Deep Sea Technology Shandong Co ltd
Current assignee: Deep Sea Technology Shandong Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-06
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a biosafety type clamping steam sterilizer in the technical field of sterilization in the sensing and controlling industry of medical systems, which comprises a saturated steam generating system, a sterilizing box, an air supply and exhaust and temperature sensor assembly, a water and exhaust filtering system, a hot air drying system, a pressure safety control assembly and a water and exhaust pipeline system, wherein the utility model designs and adds the water and exhaust filtering system and redesigns an upper cover, a lower box and a sealing structure of a sealing ring of the sterilizing box, thereby meeting the requirement of quickly sterilizing instruments polluted by infectious substances, trapping aerosol formed by the infectious substances in sterilization in a sterilization area through a PTFE biological filter and sterilizing on line, avoiding possible aerosol infection, solving the dilemma that the prior clamping sterilizer is non-biosafety, protecting related sterilization supply professional technicians, medical workers and mobile personnel in corresponding environments, greatly improves the use safety and the application range of the card type sterilizer.

Description

Biological safety type clamping type steam sterilizer

Technical Field

The utility model relates to the technical field of sterilization in the sensing and controlling industry of medical systems, in particular to a biological safety type clamping steam sterilizer.

Background

The cassette steam sterilizer is a small-sized steam sterilizer which uses saturated steam generated by electric heating as a sterilization medium, a sterilization chamber is of a cassette structure, the volume of the small-sized steam sterilizer is not more than 10L, and the cassette can be taken out integrally after sterilization.

Card formula steam sterilizer card casket is small and exquisite convenient, can wholly take out and insert, the operation of taking and the balance of the article of conveniently treating the sterilization, simultaneously because the improvement of people's living standard, the high diversified demand of diet and diet is taken in to the height of eating energy, each intelligent display device's high frequency time uses and environmental pollution noise pollution etc. resident department of stomatology, ophthalmology and otolaryngology disease increase suddenly, department of stomatology, the use characteristics of medical instrument such as department of stomatology, ophthalmology and otorhinolaryngology are miniaturized, the suit ization, the circulation is fast, this needs a quick effectual sterilization mode, card formula sterilizer malleation multiple pulse exhaust mode, the fastest flow only needs 6 ~ 7 minutes, can adopt other sterilizers to disinfect, but the swift advantage of card formula steam sterilizer can's speed can't be replaced.

Although the advantages of the cassette steam sterilizer are obvious, no biosafety cassette steam sterilizer is found at present, particularly, new crown viruses are abused, various infectious events are frequent, and higher requirements on sterilization safety are provided, under the background, a biosafety cassette steam sterilizer is urgently needed, the biosafety cassette steam sterilizer is ensured to be fast and efficient, simultaneously, the requirement on biosafety is met, aerosol pollution caused by exhausted water vapor is prevented in a sterilization process, particularly in a sterilization pretreatment period, if substances in the sterilizer have serious pathogenicity and infectivity, other people are possibly infected, even venereal diseases are possibly spread, great threats are caused to the life safety of people, if epidemic situation is expanded, certain social panic can be caused, normal life production order is influenced, and a large amount of financial resources are consumed for control and elimination, in severe cases, the economic development of a country can be influenced.

Based on the above, the utility model designs a biosafety card type steam sterilizer to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a biological safety type clamping steam sterilizer to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a biological safety type card formula steam sterilizer, includes saturated steam generation system, sterilization box, gives exhaust and temperature sensor subassembly, drainage exhaust filtration system, hot-air drying system, pressure safety control subassembly and drainage exhaust pipe-line system, the sterilization box includes sterilization box upper cover and sterilization box lower box, be provided with the steam passageway in sterilization box upper cover and the sterilization box lower box, be provided with the sealing washer between sterilization box upper cover and the sterilization box lower box, sterilization box bottom is provided with steam and admits air the joint, one side that steam admits air the joint is provided with temperature sensor, one side of temperature sensor is provided with the installation fixed plate, the top of installation fixed plate is provided with ends loose gasket and fixes through the nut.

As a further scheme of the utility model, the saturated steam generation system comprises a water tank with a water injection filter, an electromagnetic pump and a rapid evaporator, wherein medical pure water is additionally arranged in the water tank with the water injection filter and is injected into the rapid evaporator which is heated to a specified temperature range through the action of the electromagnetic pump to generate saturated steam with required temperature.

As a further scheme of the utility model, the water tank with the water injection filter comprises a water injection port, a water outlet, a water level detection switch and a water quality detection device, wherein the filter which can be conveniently detached is additionally arranged at the water injection port.

As a further scheme of the utility model, the sterilization box comprises a sterilization box upper cover, a sterilization box lower box and a sealing ring, wherein the sealing ring is arranged in a sealing groove of the sterilization box upper cover, the sterilization box upper cover and the sterilization box lower box are in limit connection through a detachable hinge at the tail part, the front part of the sterilization box upper cover and the sterilization box lower box are buckled through a limit on an injection molding handle, and the sealing ring elastically compresses and seals a gap between the sterilization box upper cover and the sterilization box lower box.

As a further scheme of the utility model, the sealing ring and the sealing groove position of the upper cover of the sterilization box are tightly assembled, the matching precision is ensured by mould processing, particularly, four corners, a sealing ring air inlet, a sealing ring PT100 port and a sealing ring exhaust port belong to important sealing parts, and the air inlet of the upper cover of the sterilization box, the PT100 port of the upper cover of the sterilization box and the exhaust port of the upper cover of the sterilization box on the sealing groove position corresponding to the sterilization box have limiting structures, so that the stability and the reliability of the important sealing structure position of the sealing ring are ensured.

As a further scheme of the utility model, the sealing ring is made of silica gel, sealing ring air inlets, sealing ring PT100 openings and sealing ring exhaust opening sealing positions are arranged on the right side of the short edge close to the round angle at equal intervals, the sealing structures at the three positions are the same and are respectively in a stepped cylindrical shape, the edges and the corners are rounded, the sealing fitting degree is improved, two small square bulges are horizontally arranged on the outer side of each sealing position to serve as limiting structures, the positioning and the installation are convenient, the cleaning and the replacement are facilitated, the installation precision is ensured, and the sealing effect is ensured.

As a further scheme of the utility model, air inlets of the upper cover of the sterilization box, PT100 ports of the upper cover of the sterilization box and air outlets of the upper cover of the sterilization box are arranged on the right side of the short edge of the sealing groove of the upper cover of the sterilization box at equal intervals close to the round angle, the three openings have the same pattern and are circular and rectangular superposed patterns with the geometric centers, the sizes of the long and wide sides of the rectangle are matched with the sizes of the bulges of the two small blocks of the sealing ring, the quick and accurate installation is ensured, the circular size of the center avoids the corresponding steam inlet joint, PT100 temperature sensor and steam exhaust joint, meanwhile, the area of the exposed leakage of the sealing ring is reduced, and the sealing effect is ensured.

As a further scheme of the utility model, two hole sites of a PT100 port of the lower sterilizing box and an exhaust port of the lower sterilizing box are arranged at the upper part of the right side of the short side of the lower sterilizing box, and a stainless steel welding screw is firmly welded at a position right below the exhaust port of the lower sterilizing box at the inner side of the lower sterilizing box.

As a further scheme of the utility model, the air supply, exhaust and temperature sensor assembly comprises a steam air inlet joint, a PT100 temperature sensor, a steam exhaust joint, a limit control switch and a mounting fixing plate.

As a further scheme of the utility model, the steam inlet joint, the PT100 temperature sensor and the steam exhaust joint adopt the same truncated cone-shaped sealing position structure and the same shaft shoulder positioning structure for positioning size, the mounting and fixing plate is precisely processed into three round holes, the mounting and positioning precision is ensured, and finally the mounting and positioning precision is fixed by the anti-loosening gasket and the nut. The limit control switch is fixed on the mounting fixing plate and used for detecting and determining the position of the sealing box.

As a further scheme of the utility model, the drainage, exhaust and filtration system comprises a water guide plate, a manually screwed nut and a PTFE (polytetrafluoroethylene) biological filter, wherein the PTFE biological filter is arranged in a water guide plate cavity and is fixed on an exhaust port of a lower box of the sterilization box by the manually screwed nut.

As a further scheme of the utility model, the water guide plate is made of stainless steel, three sides of the periphery of the back surface of the water guide plate are planes, the middle part of the water guide plate is provided with a water guide plate cavity, the water guide plate cavity is a convex cavity, the whole cavity is in a skirt pendulum shape, the middle upper part of the cavity is provided with a necking down, the top of the cavity is in a semi-surrounding cavity structure, the middle part of the water guide plate is provided with a water guide plate fixing hole, the bottom of the water guide plate is in a zigzag shape, and the water guide plate water guide sawtooth hole is formed in the bottom of the water guide plate.

As a further scheme of the utility model, the manual screwing nut is made of stainless steel, a knurled nut or a butterfly nut is not limited, and a stainless steel flat gasket is additionally arranged in the middle, so that the aim of manually and quickly screwing and disassembling is fulfilled.

As a further scheme of the utility model, the PTFE biological filter is matched with a water guide plate cavity structure for use, the appearance is matched and changed therewith, and a soft silica gel sealing layer is required to be arranged on one side of the PTFE biological filter.

As a further scheme of the utility model, the hot air drying system comprises a medical air filter, an air pump and an electromagnetic valve, and related parts are connected in sequence and then are connected to a corresponding interface of the rapid evaporator.

As a further scheme of the utility model, the pressure safety control assembly and the exhaust and drainage pipeline system comprise a pressure transmitter, a safety valve, a solenoid valve and an external wastewater tank, wherein the exhaust and drainage of the sterilization cavity respectively point to the pressure transmitter, the safety valve and the solenoid valve after passing through a steam exhaust joint, and the fluid flowing through the solenoid valve is collected in the external wastewater tank through a silicone tube.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the drainage, exhaust and filtration system is additionally designed, and the sealing structures of the upper cover, the lower box and the sealing ring of the sterilization box are redesigned, so that instruments polluted by infectious substances are sterilized quickly, aerosol formed by the infectious substances in sterilization is retained in a sterilization area through the PTFE biological filter and sterilized on line, possible aerosol infection is avoided, the dilemma that the conventional cassette sterilizer is non-biosafety is solved, professional technicians, medical workers and mobile personnel in corresponding environments for related sterilization and supply are protected, and the use safety and the application range of the cassette sterilizer are greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a drain vent according to the present invention;

FIG. 3 is a schematic view of a water deflector according to the present invention;

FIG. 4 is a schematic structural view of an end face of the sterilization case of the present invention;

FIG. 5 is a schematic structural diagram of an end face of a seal ring according to the present invention;

FIG. 6 is a schematic view of the end face structure of the sterilization box of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the upper cover of the sterilization box; 2. a seal ring; 3. a steam channel; 4. the sterilization box is put down; 5. a vapor inlet fitting; 6. a temperature sensor; 7. manually screwing the nut; 8. a PTFE biological filter; 9. a water guide plate; 10. a steam exhaust joint; 11. a nut; 12. a loosening prevention gasket; 13. mounting a fixed plate; 101. the sterilization box is covered with a sealing groove; 102. the sterilization box is provided with an air outlet; 103. the upper cover PT100 of the sterilization box is provided with a port; 104. the air inlet is arranged on the upper cover of the sterilization box; 202. a sealing ring exhaust port; 203. a seal ring PT100 port; 204. a seal ring air inlet; 401. welding screws; 402. the lower box exhaust port of the sterilization box; 403. a sterilizing box lower box PT100 port; 901. a water guide plate cavity; 902. a water guide plate fixing hole; 903 water guide plates guide the water saw-tooth holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment;

referring to fig. 1-6, the present invention provides a technical solution: a biological safety card type steam sterilizer comprises a saturated steam generation system, a sterilization box, an air supply and exhaust and temperature sensor assembly, a water discharge and exhaust filtering system, a hot air drying system, a pressure safety control assembly, a water discharge and exhaust pipeline system, a sterilizer sheet metal base sheet metal shell and the like.

Saturated steam generation system, including water tank, electromagnetic pump, the flash evaporator who takes the water injection filter, medical pure water installs additional in the water tank of taking the water injection filter, injects through the electromagnetic pump effect and has risen to the flash evaporator of appointed temperature range in, generates the saturated vapor of required temperature.

The water tank with the water injection filter comprises a water injection port, a water outlet, a water level detection switch and a water quality detection device, wherein the water injection port is additionally provided with the filter which can be conveniently detached, and the water tank is convenient for cleaning work in daily maintenance.

The sterilization box comprises a sterilization box upper cover 1, a sterilization box lower box 4 and a sealing ring 2, wherein the sealing ring 2 is arranged in a sterilization box upper cover sealing groove 101, the sterilization box upper cover 1 and the sterilization box lower box 4 are connected in a limiting mode through a detachable hinge at the tail part, the front part is buckled on a handle through injection molding, and the sealing ring 2 is elastically compressed to seal a gap between the sterilization box upper cover 1 and the sterilization box lower box 4.

The sealing ring 2 and the sealing groove position 101 of the upper cover of the sterilization box are assembled tightly, the matching precision is ensured through mould processing, particularly, four corners, a sealing ring air inlet 204, a sealing ring PT100 port 203 and a sealing ring air outlet 202 belong to important sealing parts, and the sealing ring 2 and the sealing groove position 101 of the upper cover of the sterilization box correspond to the air inlet 104 of the upper cover of the sterilization box, the PT100 port 103 of the upper cover of the sterilization box and the air outlet 102 of the upper cover of the sterilization box and have limiting structures, so that the stability and the reliability of the position of the important sealing structure of the sealing ring 2 are ensured.

Sealing washer 2 is the silica gel material, and the minor face right side is close to equidistant sealing washer air inlet 204, sealing washer PT100 mouth 203, the sealed position of sealing washer gas vent 202 of arranging of position department, and three seal structure are the same, all adopts the ladder cylindricly, and the radius is handled to the edges and corners, improves sealed laminating degree, and each sealed position outside is equal to be leveled has two small square archs as limit structure, makes things convenient for the location installation, guarantees the installation accuracy when doing benefit to the washing change, ensures sealed effect.

The sealed trench of minor face right side of sterilization box upper cover 101 is close to the equidistant sterilization box upper cover air inlet 104 of arranging of fillet department, sterilization box upper cover PT100 mouth 103, sterilization box upper cover gas vent 102, three opening styles are the same, be the circular and rectangular stack style of geometric center coincidence, the protruding size design of two small square blocks of rectangular long and wide limit size cooperation sealing washer 2, guarantee the swift accuracy of installation, the circular size at center dodges the steam admission joint 5 that corresponds, PT100 temperature sensor 6, steam exhaust connects 10, reduce the naked area of leaking of sealing washer 2 simultaneously, ensure sealed effect.

The upper portion of the right side of the short side of the lower box 4 of the sterilization box is provided with two hole sites of a PT100 hole 403 of the lower box of the sterilization box and an exhaust port 402 of the lower box of the sterilization box, and a stainless steel welding screw 401 is firmly welded at the position right below the exhaust port 402 of the lower box of the inner side of the lower box of the sterilization box.

The air supply, exhaust and temperature sensor assembly comprises a steam air inlet joint 5, a PT100 temperature sensor 6, a steam exhaust joint 10, a limit control switch and a mounting fixing plate 13.

The steam inlet joint 5, the PT100 temperature sensor 6 and the steam exhaust joint 10 adopt the same truncated cone-shaped sealing position structure and the same shaft shoulder positioning structure positioning size, three circular holes are precisely machined on the mounting fixing plate 13, the mounting and positioning precision is ensured, and finally the mounting fixing plate is fixed by the anti-loosening gasket 12 and the nut 11. The limit control switch is fixed on the mounting fixing plate 13 and used for detecting and determining the position of the sealing box.

Saturated vapor with the required temperature is generated, enters the front end inside the sterilization box through a sealing opening formed by the steam inlet joint 5 and the sealing ring air inlet 204 and a steam channel 3 formed by the sealing ring 2, the sterilization box upper cover 1 and the sterilization box lower box 4, is discharged from the front to the back and flows into the drainage, exhaust and filtration system.

The drainage, exhaust and filtration system comprises a water guide plate 9, a manually screwed nut 7 and a PTFE biological filter 8, wherein the PTFE biological filter 8 is arranged in a water guide plate cavity 901 and is fixed on an exhaust port 402 of a lower box of the sterilization box through the manually screwed nut 7.

The water guide plate 9 is made of stainless steel materials, a plate is formed by stamping, three sides of the periphery of the back face are planes, a protruding cavity is arranged in the middle of the back face, the cavity is integrally skirt-shaped, and a necking neck is arranged at the middle upper part of the back face, so that the top of the cavity is of a semi-surrounding cavity structure which is not limited to circular, oval, square and the like, and is a water guide plate cavity 901, the middle of the water guide plate is provided with a round hole which is a water guide plate fixing hole 902, and the bottom of the water guide plate is of a sawtooth shape and is a water guide sawteeth hole 903 of the water guide plate.

The manual nut 7 of screwing is stainless steel material, does not limit annular knurl nut or butterfly nut form, installs the flat gasket of stainless steel additional in the middle, satisfies the manual purpose that can screw the dismantlement fast.

The PTFE biological filter 8 is matched with the water guide plate cavity 901 structure for use, the appearance is matched and changed therewith, and a soft silica gel sealing layer is required on one surface of the PTFE biological filter 8.

The air in the sterilization box is discharged from the front to the back and downwards, enters the water guide plate cavity 901 through the water guide plate water guide sawtooth hole 903, is filtered by the PTFE biological filter 8, is discharged through an exhaust passage formed by the sealing ring exhaust port 202 and the steam exhaust joint 10, and flows into the pressure safety control assembly and the exhaust water and exhaust pipeline system.

The hot air drying system comprises medical air filtering, an air pump and an electromagnetic valve, wherein related parts are connected in sequence and then connected into the corresponding interface of the rapid evaporator, outside air is pressurized by the air pump after passing through the air filtering, enters the rapid evaporator through the opened electromagnetic valve, is heated and then enters the sterilization box through the steam inlet connector 5 and the steam channel 3, hot air drying is carried out on articles according to a steam circulating path, and water vapor in the articles is taken away after sterilization.

The pressure safety control assembly and the drainage and exhaust pipeline system comprise a pressure transmitter, a safety valve, a solenoid valve and an external wastewater water tank, the drainage and exhaust of the sterilization cavity respectively point to the pressure transmitter, the safety valve and the solenoid valve after passing through the steam exhaust joint 10, and the fluid flowing through the solenoid valve is collected in the external wastewater water tank through a silicone tube.

The working principle is as follows: the utility model relates to a biological safety card type steam sterilizer which comprises a saturated steam generating system, a sterilizing box, an air supply, exhaust and temperature sensor assembly, a water and exhaust filtering system, a hot air drying system, a pressure safety control assembly and a water and exhaust pipeline system, wherein the water and exhaust filtering system is additionally arranged by design, the sealing structures of an upper cover, a lower box and a sealing ring of the sterilizing box are redesigned, therefore, instruments polluted by infectious substances are sterilized quickly, aerosol formed by the infectious substances in sterilization is retained in a sterilization area through a PTFE biological filter and is sterilized on line, possible aerosol infection is avoided, the dilemma that the existing card type sterilizer is non-biosafety is solved, related disinfection supply professionals, medical workers and mobile personnel in corresponding environments are protected, and the use safety and the application range of the card type sterilizer are greatly improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a biological safety formula card steam sterilizer which characterized in that: including saturated steam generation system, sterilization box, give exhaust and temperature sensor subassembly, drainage exhaust filtration system, hot-air drying system, pressure safety control subassembly and drainage exhaust pipe way system, sterilization box includes sterilization box upper cover (1) and sterilization box lower box (4), be provided with steam channel (3) in sterilization box upper cover (1) and sterilization box lower box (4), be provided with between sterilization box upper cover (1) and the sterilization box lower box (4) sealing washer (2), sterilization box bottom is provided with steam air inlet joint (5), one side of steam air inlet joint (5) is provided with temperature sensor (6), one side of temperature sensor (6) is provided with installation fixed plate (13), the top of installation fixed plate (13) is provided with only loose gasket (12) and fixes through nut (11).

2. The biosafety cassette steam sterilizer of claim 1, wherein: saturated steam generation system, including water tank, electromagnetic pump and rapid evaporator, be provided with water filling port, delivery port, water level detection switch and water quality testing device on the water tank, be provided with the water injection filter on the water filling port.

3. The biosafety cassette steam sterilizer of claim 1, wherein: the sterilization box upper cover is characterized in that a sterilization box upper cover sealing groove (101), a sterilization box upper cover exhaust port (102), a sterilization box upper cover PT100 port (103) and a sterilization box upper cover air inlet (104) are sequentially arranged on the sterilization box upper cover (1) from right to left, a sealing ring (2) is arranged in the sterilization box upper cover sealing groove (101) position, and the sterilization box upper cover (1) and the sterilization box lower cover (4) are connected in a limiting mode through a detachable hinge at the tail portion.

4. A biosafety cassette steam sterilizer as claimed in claim 3, wherein: sealing washer (2) with sterilization box upper cover seal groove (101) assembly is inseparable, sealing washer (2) are the silica gel material, the minor face right side of sealing washer (2) is close to the equidistant sealing washer air inlet (204), sealing washer PT100 mouth (203) and sealing washer gas vent (202) of arranging of corner department, and three seal structure are the same, all adopt the ladder cylindricly, and the radius is done to the edges and corners and handles, and each seal structure outside is equal level has two square archs as limit structure.

5. The biosafety cassette steam sterilizer of claim 4, wherein: the three opening patterns of the sterilization box upper cover exhaust port (102), the sterilization box upper cover PT100 port (103) and the sterilization box upper cover air inlet (104) are the same, are the superposition patterns of a circle and a rectangle with coincident geometric centers, and the sizes of the three openings are matched with those of the two square bulges of the sealing ring (2).

6. The biosafety cassette steam sterilizer of claim 1, wherein: the upper portion of the right side of the short side of the lower box (4) of the sterilizing box is provided with a PT100 port (403) of the lower box of the sterilizing box and an exhaust port (402) of the lower box of the sterilizing box, and a welding screw (401) is welded under the exhaust port (402) of the lower box of the sterilizing box.

7. The biosafety cassette steam sterilizer of claim 1, wherein: drainage exhaust filtration system, including water deflector (9), manual nut (7) of screwing, PTFE material biofilter (8) set up in the die cavity of water deflector, through manual nut (7) of screwing on fixed and sterilization box lower box gas vent (402).

8. The biosafety cassette steam sterilizer of claim 7, wherein: the steam inlet connector (5), the temperature sensor (6) and the steam exhaust connector (10) adopt the same round platform-shaped sealing position structure and the same shaft shoulder positioning structure to position, and three round holes and a limit control switch are arranged on the installation fixing plate (13).

9. The biosafety cassette steam sterilizer of claim 7, wherein: the water guide plate is characterized in that the water guide plate (9) is made of stainless steel, three sides of the periphery of the back of the water guide plate (9) are planes, a water guide plate cavity (901) is arranged in the middle, the water guide plate cavity (901) is a convex cavity, the whole cavity is in a skirt pendulum shape, a necking down is arranged at the middle upper part, the top of the cavity is in a semi-surrounding cavity structure, a water guide plate fixing hole (902) is formed in the middle of the water guide plate (9), the bottom of the water guide plate (9) is in a zigzag shape, and a water guide plate water guide sawtooth hole (903) is formed in the bottom of the water guide plate.

10. The biosafety cassette steam sterilizer of claim 7, wherein: the manual nut (7) of screwing is stainless steel material, installs the flat gasket of stainless steel additional in the middle, the one side of PTFE material biofilter (8) is provided with soft silica gel sealing layer.

11. The biosafety cassette steam sterilizer of claim 1, wherein: the hot air drying system comprises a medical air filter, an air pump and an electromagnetic valve, and related parts are connected in sequence and then connected to corresponding interfaces of the rapid evaporator.

12. The biosafety cassette steam sterilizer of claim 1, wherein: the pressure safety control assembly and the water and gas exhaust pipeline system comprise a pressure transmitter, a safety valve, a solenoid valve and a water tank, water and gas exhausted by the sterilization cavity respectively point to the pressure transmitter, the safety valve and the solenoid valve after passing through a steam exhaust joint (10), and fluid flowing through the solenoid valve is collected in the water tank through a silicone tube.