CN215308582U - High-pressure steam sterilization device for laboratory vessel - Google Patents

Abstract

The utility model relates to the technical field of sterilization devices, in particular to a high-pressure steam sterilization device for experimental utensils, which comprises an outer box body, an inner box body and a water box, wherein the inner box body and the water box are wrapped in the outer box body, the water box is fixed at the bottom of the inner box body, a spiral heating pipe is arranged in the water box, a grid plate is arranged at the bottom of the inner box body, a supporting plate is fixed at the bottom of the side wall of the inner box body, a steam pipe network is arranged on the supporting plate and communicated with the water box, a reciprocating mechanism is connected on the steam pipe network to form a structure for realizing the reciprocating motion of the steam pipe network through the reciprocating mechanism, a box cover is fixedly and detachably connected at the opening of the inner box body, an exhaust pipe is communicated on the box cover, and a pressure relief mechanism is connected at the exhaust pipe through threads, improves the sterilization efficiency and quality, and has wide application prospect in the technical field of sterilization devices.

Description

High-pressure steam sterilization device for laboratory vessel

Technical Field

The utility model relates to the technical field of sterilization devices, in particular to a high-pressure steam sterilization device for experimental utensils.

Background

Need use more consumptive material in laboratory experimentation, like glassware, microscope, disinfection pot, metal ware, plastics, rubber products, cloth class, test paper class etc. in order to guarantee the accuracy of experimental result, all need carry out strict washing and disinfection work to glassware before the experiment and after the experiment, consequently need use glassware's degassing unit. And the mode that passes through high-pressure steam is mostly to the disinfection of laboratory vessel among the prior art, but when using high-pressure steam disinfection, the eruption position of steam is mostly fixed for laboratory vessel is heated the sterilization inhomogeneous, influences sterilization efficiency and quality, consequently needs a sterilization apparatus that can solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a high-pressure steam sterilization device for laboratory vessels, which aims to solve the problems that in the prior art, the steam spraying position in the high-pressure steam sterilization device is mostly fixed, so that the laboratory vessels are not uniformly sterilized by heating, and the sterilization efficiency and quality are influenced.

The technical scheme includes that the steam box comprises an outer box body, an inner box body and a water box, wherein the inner box body and the water box are wrapped in the outer box body, the water box is fixed to the bottom of the inner box body, a spiral heating pipe is arranged in the water box, a grid plate is arranged at the bottom of the inner box body, a supporting plate is fixed to the bottom of the side wall of the inner box body, a steam pipe network is arranged on the supporting plate and communicated with the water box, a reciprocating mechanism is connected to the steam pipe network to form a structure for achieving reciprocating motion of the steam pipe network through the reciprocating mechanism, a box cover is detachably connected to an opening of the inner box body, an exhaust pipe is communicated to the box cover, and a pressure release mechanism for discharging pressure in the inner box body is in threaded connection with the exhaust pipe.

Preferably, the upper end of the side wall of the water tank is communicated with a water inlet pipe, the water inlet pipe is communicated with a water inlet electromagnetic valve, the lower end of the side wall of the water tank is communicated with a water discharge pipe, and the water discharge pipe is communicated with a water discharge electromagnetic valve.

Preferably, the bottom of the inner box body is arc-shaped, the grid plate is arranged at the diameter-variable position of the side wall of the inner box body, the middle of the arc-shaped bottom of the inner box body is communicated with a drainage pipe, the drainage pipe penetrates through the water tank and extends to the outside, and the drainage pipe is communicated with a drainage electromagnetic valve outside the outer box body.

Preferably, the steam pipe network comprises a plurality of annular pipes and vertical pipes which are communicated with each other, exhaust holes are formed in the end faces, close to the axis of the inner box body, of the annular pipes and the vertical pipes, the annular pipes at the lowest end are communicated with an upper connecting pipe, a lower connecting pipe communicated with the water tank is fixed at the bottom of the inner box body, and the upper connecting pipe is communicated with the lower connecting pipe through a connecting hose.

Preferably, the upper end face of the supporting plate is provided with a rotating groove, a ball is arranged in the rotating groove and is abutted against the lower end face of the steam pipe network, and the bottom of the rotating groove is provided with a communicating hole communicated with the outside.

Preferably, reciprocating mechanism includes connecting plate, reciprocating gear, support bearing, axis of rotation and driving motor, the connecting plate is fixed on the lower terminal surface of steam pipe network for the arc, reciprocal rotary trough has been seted up on the connecting plate, the upper end both ends in reciprocal rotary trough extend there is reciprocal pawl, reciprocating gear is incomplete gear, reciprocating gear meshes with reciprocal pawl mutually, the axle center at reciprocal pawl is fixed to the axis of rotation, the one end of axis of rotation runs through interior box and outer box and extends to the outside to be connected with driving motor rotates, on the lateral wall of box in the support bearing is fixed, axis of rotation interference is connected on support bearing, the axis of rotation runs through interior box department cover and is equipped with the sealing washer.

Preferably, a plurality of lower fixing plates are fixed on the outer side wall of the opening of the inner box body, a plurality of upper fixing plates are fixed on the side end face of the edge of the box cover, the upper fixing plates and the lower fixing plates are fixedly and detachably connected through fastening bolts, and a sealing gasket is arranged between the opening of the inner box body and the box cover.

Preferably, pressure release mechanism is including connecting cap, shutoff ball and spring, the one end threaded connection of connecting the cap is at the outer terminal surface of the opening of blast pipe, connect the cap other end and seted up the hole of losing heart, the shutoff ball passes through the spring to be fixed in connecting the cap, constitutes the structure of the opening shutoff of blast pipe through spring oppression shutoff ball.

The technical scheme of the utility model can achieve the following beneficial effects: (1) the inner box body and the water tank are wrapped by the outer box body, so that the inner box body and the water tank are protected conveniently, and meanwhile, the inner box body and the water tank can be insulated, the heat dissipation is reduced, and the heat utilization rate is improved; (2) through the water tank and the spiral heating pipe, the water in the water tank is conveniently heated by the spiral heating pipe to form high-temperature steam, and then the high-temperature steam is conveyed into the inner box body to sterilize experimental utensils in the inner box body by high-pressure steam; (3) through the steam pipe network and the reciprocating mechanism, the steam pipe network is convenient to uniformly spray high-temperature steam into the inner box body, and meanwhile, the reciprocating mechanism is used for driving the whole steam pipe network to reciprocate in the inner box body, so that the high-temperature steam is further uniformly sprayed into the inner box body, and the sterilization efficiency and quality of test utensils in the inner box body are improved; (4) through the exhaust pipe and the pressure relief mechanism, the pressure inside the inner box body is conveniently relieved, explosion caused by overlarge pressure inside the inner box body is avoided, and meanwhile, the pressure of high-temperature steam inside the inner box body can be adjusted in a small range through the pressure relief mechanism, so that better sterilization is achieved; the technical scheme of the utility model has wide application prospect in the technical field of sterilization devices.

Drawings

Fig. 1 is a sectional view of an autoclave sterilization apparatus for laboratory vessels according to the present invention.

Fig. 2 is an enlarged view of the area a in fig. 1.

Fig. 3 is an enlarged view of the region B in fig. 1.

Wherein, 1, the outer box body, 2, the inner box body, 3, the water tank, 4, the steam pipe network, 101, the annular pipe, 102, the vertical pipe, 103, the exhaust hole, 5, the lower connecting pipe, 6, the connecting hose, 7, the upper connecting pipe, 8, the grid plate, 9, the supporting plate, 10, the limit baffle, 11, the rotating groove, 12, the ball, 13, the communicating hole, 14, the connecting plate, 15, the reciprocating groove, 15.1, the reciprocating rotating tooth, 16, the reciprocating gear, 17, the rotating shaft, 18, the sealing ring, 19, the supporting bearing, 20, the driving motor, 21, the draining pipe, 22, the draining electromagnetic valve, 23, the draining pipe, 24, the draining electromagnetic valve, 25, the water inlet pipe, 26, the water inlet electromagnetic valve, 27, the box cover, 28, the sealing gasket, 29, the lower fixing plate, 30, the upper fixing plate, 31, the fastening bolt, 32, the air outlet pipe, 33, the connecting cap, 34, the air leakage hole, 35, the spring, 36, and the sealing ball, 37. a spiral heating pipe.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without any creative effort belong to the protection scope of the present invention, and in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance in the description of the present invention, it being noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A high pressure steam sterilization apparatus for laboratory vessel as shown in fig. 1-3, including outer box 1 and parcel box 2 and water tank 3 in outer box 1, outer box 1 is the heat preservation of heat preservation rock wool material, is convenient for carry out isolation protection with interior box 2 and water tank 3 through outer box 1, avoids suffering destruction, can also play certain heat preservation function simultaneously, avoids interior box 2 and 3 internal heat of water tank to distribute too fast, reduces thermal utilization ratio. 3 welded fastening of water tank has the bottom of box 2 including for water tank 3 is connected into a whole with the bottom of interior box 2, and the heat transfer in the water tank 3 of being convenient for simultaneously is to interior box 2, to the sterilization efficiency and the thermal utilization ratio of laboratory vessel in the box 2 in improving. Be provided with spiral heating pipe 37 in the water tank 3, spiral heating pipe 37 can the wire be linked together with external power supply, is convenient for form high temperature vapor to the water heating in the water tank 3 through spiral heating pipe 37, and then enters into and carries out the high temperature steam disinfection to the laboratory vessel in the interior box 2. The bottom of interior box 2 is convex, and grid plate 8 has been placed to the bottom of interior box 2, and the reducing department of box 2 lateral wall including grid plate 8 sets up, is convenient for separate the bottom of interior box 2 with upper portion through grid plate 8, and the bottom of interior box 2 is assembled to the condensate water in the box 2 in being convenient for, and avoids laboratory ware and condensate water contact to influence high temperature steam disinfection effect. The middle of the circular arc-shaped bottom of the inner box body 2 is communicated with a drain pipe 21, the drain pipe 21 penetrates through the water tank 3 and extends to the outside, the drain pipe 21 is communicated with a drain electromagnetic valve 22 outside the outer box body 1, so that condensed water gathered at the inner bottom of the inner box body 2 can be conveniently drained through the drain pipe 21, and meanwhile, the drain pipe 21 is controlled to be opened and closed through the drain electromagnetic valve 22. The bottom of the side wall of the inner box body 2 is welded or detachably connected with a supporting plate 9 through screw fixation, a steam pipe network 4 is placed on the supporting plate 9, the steam pipe network 4 is communicated with the water tank 3, the steam pipe network 4 is convenient to support through the supporting plate 9, and the steam pipe network 4 is prevented from falling to the bottom of the inner box body 2. Be connected with reciprocating mechanism on the steam pipe network 4, constitute and realize the structure of steam pipe network 4 reciprocating motion through reciprocating mechanism, be convenient for drive through reciprocating mechanism whole steam pipe network 4 and use the axle center of interior box 2 to rotate as the axle, and then realize the removal of exhaust hole 103 position on the steam pipe network 4, and then realize the all-round sterilization treatment of laboratory vessel in the interior box 2. The fixed case lid 27 that can dismantle of opening part of interior box 2 is connected with, is convenient for seal interior box 2 through case lid 27, and then increases the pressure of interior box 2 through continuously carrying high temperature vapor to in the interior box 2. Specifically, a plurality of lower fixing plates 29 are welded and fixed on the outer side wall of the opening of the inner box body 2, a plurality of upper fixing plates 30 are welded and fixed on the side end face of the edge of the box cover 27, and the upper fixing plates 30 and the lower fixing plates 29 are fixedly and detachably connected through fastening bolts 31, so that the quick assembly and disassembly of the box cover 27 and the inner box body 2 can be conveniently realized through the upper fixing plates 30 and the lower fixing plates 29. Be provided with seal ring 28 between the opening part of interior box 2 and the case lid 27, be convenient for carry out abundant shutoff through seal ring 28 with the gap between the opening case lid 27 of interior box 2, avoid vapor to escape from the contact department of the opening of interior box 2 and case lid 27, high pressure production in the interior box 2 of influence. The box cover 27 is communicated with an exhaust pipe 32, the exhaust pipe 32 is in threaded connection with a pressure relief mechanism for discharging pressure in the inner box body 2, so that vapor in the inner box body 2 can be discharged conveniently through the exhaust pipe 32, meanwhile, the vapor in the inner box body 2 can be timely discharged when the pressure in the inner box body 2 is ensured by the pressure relief mechanism, and the inner box body 2 is prevented from being exploded due to overlarge pressure.

As shown in FIGS. 1 to 3, in the high pressure steam sterilization apparatus for laboratory vessels, an inlet pipe 25 is connected to the upper end of the side wall of the water tank 3, so that water can be conveniently added into the water tank 3 through the inlet pipe 25. The water inlet pipe 25 is communicated with a water inlet electromagnetic valve 26, so that the opening and closing of the water inlet pipe 25 are controlled through the water inlet electromagnetic valve 26. The lower end of the side wall of the water tank 3 is communicated with the drain pipe 23, so that the water in the water tank 3 can be drained through the drain pipe 23, and meanwhile, impurities in the water tank 3 can be drained, and the influence on the heating efficiency of the spiral heating pipe 37 is avoided. The drain pipe 23 is communicated with a drain electromagnetic valve 24, so that the opening and closing of the drain pipe 23 can be controlled by the drain electromagnetic valve 24.

As shown in fig. 1-3, the high pressure steam sterilization device for laboratory vessel, the steam pipe network 4 includes a plurality of annular pipes 101 and standpipe 102 that are linked together, and the end surfaces of the annular pipes 101 and standpipe 102 near the axis of the inner box 2 are provided with vent holes 103, so that the vent holes 103 are uniformly distributed to the side wall of the whole inner box 2 through the plurality of annular pipes 101 and standpipe 102, thereby facilitating the discharge of steam from the vent holes 103 on the annular pipes 101 and standpipe 102 to the inner box 2, and further fully sterilizing the laboratory vessel in the inner box 2. The annular pipe 101 that is located the bottommost end communicates and has last connecting pipe 7, the sealed welded fastening in bottom of interior box 2 has lower connecting pipe 5 that is linked together with water tank 3, it is linked together through coupling hose 6 with lower connecting pipe 7 to go up connecting pipe 7, be convenient for through last connecting pipe 7, lower connecting pipe 5 and coupling hose 6 communicate water tank 3 and steam pipe network 4 together, and then the high temperature vapor that produces in the water tank 3 of being convenient for gets into steam pipe network 4, and through the even discharge of steam pipe network 4 in interior box 2. The edge of the grid plate 8 is provided with a notch which is convenient for the connecting hose 6 to pass through, so that the steam pipe network 4 does not influence and drive the connecting hose 6 to move when doing reciprocating motion.

As shown in fig. 1-3, the high-pressure steam sterilization device for laboratory ware, the upper end surface of the supporting plate 9 is provided with a rotating groove 11, the rotating groove 11 is internally provided with a ball 12, the ball 12 is in contact with the lower end surface of the steam pipe network 4, the ball 12 is convenient to rotate in the rotating groove 11, and then the friction between the steam pipe network 4 and the supporting plate 9 is reduced, and the steam pipe network 4 is convenient to reciprocate on the supporting plate 9. The bottom of the rotating groove 11 is provided with a communicating hole 13 communicated with the outside, so that condensed water gathered in the rotating groove 11 can be conveniently discharged to the bottom of the inner box body 2 through the communicating hole 13, and the condensed water is prevented from gathering in the rotating groove 11 to cause oxidation corrosion to the balls 12. The interior border welded fastening of backup pad 9 has limit baffle 10, and limit baffle 10 contacts with the inner circle of the annular pipe 101 on the steam pipe network 4, is convenient for inject the annular pipe 101 on the steam pipe network 4 through limit baffle 10, and then inject whole steam pipe network 4 for whole steam pipe network 4 can only carry out reciprocating rotation as the pivot with the axle center of interior box 2 under reciprocating mechanism's drive.

1-3, reciprocating mechanism includes connecting plate 14, reciprocating gear 16, support bearing 19, axis of rotation 17 and driving motor 20, and connecting plate 14 is arc welding or can dismantle through the bolt fastening and connect on the lower terminal surface of steam pipe network 4 for connecting plate 14 and ring pipe 101 link together and form a whole, and then is connected connecting plate 14 and steam pipe network 4 and forms a whole, is convenient for drive whole steam pipe network 4 through connecting plate 14 and removes. The connecting plate 14 is provided with a reciprocating rotary groove 15, two ends of the upper end of the reciprocating rotary groove 15 extend to form reciprocating rotary teeth 15.1, the reciprocating gear 16 is an incomplete gear, the reciprocating gear 16 is meshed with the reciprocating rotary teeth 15.1, and the incomplete gear is meshed with the reciprocating rotary teeth 15.1 in the reciprocating rotary groove 15 to drive the connecting plate 14 to reciprocate so as to drive the whole steam pipe network 4 to reciprocate. Rotation axis 17 welded fastening is in the axle center of reciprocal rotary tooth 15.1, and box 2 and outer box 1 extend to the outside in the one end of rotation axis 17 runs through to rotate with driving motor 20 and be connected, and driving motor 20 can dismantle the connection on outer box 1 and inner box 2 through the fix with screw, is convenient for drive rotation axis 17 through driving motor 20 and rotates, and rotation axis 17 drives reciprocating gear 16 and rotates, and then provides power for reciprocating motion is to whole steam pipe net 4. Support bearing 19's outer lane welding or can dismantle the connection on the lateral wall of interior box 2 through the fix with screw, axis of rotation 17 interference connection is on support bearing 19, is convenient for support through support bearing 19 to axis of rotation 17 and prescribes a limit to, does not influence axis of rotation 17 normal rotation simultaneously. The rotation axis 17 runs through interior box 2 department cover and is equipped with sealing washer 18, is convenient for carry out the shutoff through sealing washer 18 with the gap between rotation axis 17 and the interior box 2, avoids vapor to escape from the gap between rotation axis 17 and the interior box 2, highly compressed formation in the box 2 in the influence.

As shown in fig. 1-3, the high-pressure steam sterilization device for laboratory vessels, the pressure relief mechanism includes a connection cap 33, a blocking ball 36 and a spring 35, one end of the connection cap 33 is screwed on the outer end face of the opening of the exhaust pipe 32, so that the pressure relief device and the exhaust pipe 32 are fixed and detachably connected together, and meanwhile, the elasticity of the spring 35 to the blocking ball 36 is adjusted by using the screwed connection of the connection cap 33 and the exhaust pipe 32, so that the blocking ball 36 is ejected out from the opening of the exhaust pipe 32 by different pressures required in the inner box body 2, and the adjustment control of the pressure in the inner box body 2 is realized. The other end of the connecting cap 33 is provided with a release hole 34, so that the water vapor in the inner box body 2 can be conveniently discharged to the outside from the release hole 34. Blocking ball 36 passes through spring 35 welded fastening in connecting cap 33, constitute the structure of the opening shutoff of 36 with blast pipe 32 of blocking ball through spring 35 oppression blocking ball, be convenient for provide elasticity for blocking ball 36 through spring 35, and then make in the box 2 atmospheric pressure reach can promote blocking ball 36 and spring 35 after certain numerical value, with blocking ball 36 from the opening part thrust of blast pipe 32, make in the box 2 vapor from blast pipe 32 and the external world of discharging of disappointing hole 34.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. A high-pressure steam sterilization device for laboratory wares comprises an outer box body (1), an inner box body (2) and a water tank (3) which are wrapped in the outer box body (1), and is characterized in that the water tank (3) is fixed at the bottom of the inner box body (2), a spiral heating pipe (37) is arranged in the water tank (3), a grid plate (8) is placed at the bottom of the inner box body (2), a supporting plate (9) is fixed at the bottom of the side wall of the inner box body (2), a steam pipe network (4) is placed on the supporting plate (9), the steam pipe network (4) is communicated with the water tank (3), a reciprocating mechanism is connected onto the steam pipe network (4), a structure for realizing reciprocating motion of the steam pipe network (4) through the reciprocating mechanism is formed, a box cover (27) is fixedly detachably connected to an opening of the inner box body (2), and an exhaust pipe (32) is communicated onto the box cover (27), the exhaust pipe (32) is in threaded connection with a pressure relief mechanism for discharging pressure in the inner box body (2).

2. The high-pressure steam sterilization device for laboratory vessels according to claim 1, wherein the upper end of the side wall of the water tank (3) is communicated with a water inlet pipe (25), the water inlet pipe (25) is communicated with a water inlet electromagnetic valve (26), the lower end of the side wall of the water tank (3) is communicated with a water outlet pipe (23), and the water outlet pipe (23) is communicated with a water outlet electromagnetic valve (24).

3. The high-pressure steam sterilization device for laboratory vessels according to claim 1, wherein the bottom of the inner box body (2) is arc-shaped, the grid plate (8) is arranged at the diameter-variable position of the side wall of the inner box body (2), the middle of the arc-shaped bottom of the inner box body (2) is communicated with a drainage pipe (21), the drainage pipe (21) penetrates through the water tank (3) and extends to the outside, and the drainage pipe (21) is communicated with a drainage electromagnetic valve (22) outside the outer box body (1).

4. The high-pressure steam sterilization device for laboratory vessels according to claim 1, wherein the steam pipe network (4) comprises a plurality of annular pipes (101) and vertical pipes (102) which are communicated with each other, the end surfaces of the annular pipes (101) and the vertical pipes (102) close to the axis of the inner box body (2) are provided with exhaust holes (103), the annular pipe (101) at the lowest end is communicated with an upper connecting pipe (7), the bottom of the inner box body (2) is fixed with a lower connecting pipe (5) communicated with the water tank (3), and the upper connecting pipe (7) is communicated with the lower connecting pipe (5) through a connecting hose (6).

5. The high-pressure steam sterilization device for laboratory vessels according to claim 1, wherein the upper end surface of the support plate (9) is provided with a rotating groove (11), a ball (12) is arranged in the rotating groove (11), the ball (12) is abutted against the lower end surface of the steam pipe network (4), the bottom of the rotating groove (11) is provided with a communicating hole (13) communicated with the outside, and the inner edge of the support plate (9) is fixed with a limit baffle (10).

6. The high-pressure steam sterilization device for laboratory vessels according to claim 1, wherein the reciprocating mechanism comprises a connecting plate (14), a reciprocating gear (16), a support bearing (19), a rotating shaft (17) and a driving motor (20), the connecting plate (14) is fixed on the lower end surface of the steam pipe network (4) in an arc shape, a reciprocating rotating groove (15) is formed in the connecting plate (14), reciprocating rotating teeth (15.1) extend from both ends of the upper end of the reciprocating rotating groove (15), the reciprocating gear (16) is an incomplete gear, the reciprocating gear (16) is meshed with the reciprocating rotating teeth (15.1), the rotating shaft (17) is fixed on the axis of the reciprocating rotating teeth (15.1), one end of the rotating shaft (17) extends to the outside through the inner box body (2) and the outer box body (1) and is rotatably connected with the driving motor (20), on the lateral wall of box (2) in support bearing (19) is fixed, axis of rotation (17) interference connection is on support bearing (19), box (2) department cover is equipped with sealing washer (18) in axis of rotation (17) runs through.

7. The high-pressure steam sterilization device for laboratory vessels according to claim 1, wherein a plurality of lower fixing plates (29) are fixed on the outer side wall of the opening of the inner box body (2), a plurality of upper fixing plates (30) are fixed on the side end face of the edge of the box cover (27), the upper fixing plates (30) and the lower fixing plates (29) are fixedly and detachably connected through fastening bolts (31), and a sealing gasket (28) is arranged between the opening of the inner box body (2) and the box cover (27).

8. The autoclaving apparatus for laboratory vessels as set forth in claim 1, wherein the pressure relief mechanism includes a connection cap (33), a blocking ball (36) and a spring (35), one end of the connection cap (33) is screwed on the outer end face of the opening of the exhaust pipe (32), the other end of the connection cap (33) is provided with a gas release hole (34), the blocking ball (36) is fixed in the connection cap (33) through the spring (35), and a structure for blocking the opening of the exhaust pipe (32) by pressing the blocking ball (36) through the spring (35) is formed.

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