Ventilated moist heat sterilization cabinet

Abstract

The invention relates to the technical field of sterilization equipment, and provides a ventilated moist heat sterilization cabinet, which comprises a sterilization cabinet body, a transport vehicle device and a material placing frame, a sterilization cavity is formed in the sterilization cabinet body, a feeding port and a discharging port are formed in the front side and the rear side of the sterilization cabinet body respectively and communicate with the sterilization cavity, a first locking rod is fixedly arranged at the bottom of the feeding port, a second locking rod is fixedly arranged at the bottom of the discharging port, and a steam nozzle and a cooling air opening are formed in the top face of the sterilization cavity. A sterilization guide rail is fixedly arranged on the bottom surface of the sterilization cavity; the transport vehicle device comprises a vehicle body, a transport guide rail, a locking plate, a locking block, a locking driving assembly, a blocking frame, a blocking support, a blocking block and a blocking driving assembly. Rolling wheels and limiting beams are arranged at the bottom of the material containing frame. The sterilization cabinet has the advantages that the material placing frame is pushed into the sterilization cabinet body from the vehicle body along the transportation guide rail and the sterilization guide rail, so that the feeding and discharging efficiency of the sterilization cabinet is improved; and the vehicle body stably transports the material placing frame, so that the manual labor is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sterilization equipment, and in particular to a ventilated moist heat sterilization cabinet. Background Art

[0002] The principle of moist heat sterilization is to use the physical property of saturated steam releasing a large amount of latent heat when condensing, so that the material to be sterilized is in a high temperature and humid state, and after a period of heat preservation, the purpose of sterilization is achieved. It uses the strong penetrating power of high-temperature saturated steam. Saturated steam is pure water put into a container and heated under certain pressure conditions. When it reaches a certain temperature, the temperature stops rising and pure steam begins to be generated. This pure steam is called saturated steam.

[0003] Sterilizers are commonly used in the pharmaceutical industry to sterilize liquids in glass bottles, ampoules, etc. at high temperatures. They are also suitable for the food industry to sterilize various sealed packages, drinking liquids, canned foods, etc. at high temperatures. In order to sterilize more materials at a time and improve sterilization efficiency, the current sterilizers are designed to be larger. Before sterilization, the materials to be sterilized are placed on a tray, and then multiple trays are placed on the material loading frame. The staff manually moves the material loading frame close to the sterilizer, and then places the material loading frame in the sterilization chamber of the sterilizer, and then closes the cabinet door; after sterilization is completed, the cabinet door is opened, and the staff manually moves the material loading frame out of the sterilization chamber. Manually moving the material loading frame for feeding and unloading the sterilizer is relatively cumbersome and inconvenient, inefficient, and labor-intensive. The material loading frame is easy to shake during transportation and placement, causing the materials to be sterilized to fall and cause damage.

[0004] Therefore, how to improve the efficiency of feeding and discharging materials in the sterilization cabinet, stably transport the material placement frame, and reduce manual labor is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a ventilated moist heat sterilizer, improve the material loading and unloading efficiency of the sterilizer, stably transport the material placement frame, and reduce manual labor.

[0006] The present invention is implemented as follows: a ventilated moist heat sterilizing cabinet, comprising:

[0007] Sterilization cabinet, transport trolley device and material rack;

[0008] The sterilization cabinet has a sterilization cavity inside, and the front and rear sides of the sterilization cabinet are respectively provided with an inlet and an outlet, and the inlet and the outlet are both communicated with the sterilization cavity, a first locking rod is fixedly provided at the bottom of the inlet, and a second locking rod is fixedly provided at the bottom of the outlet, a steam nozzle and a cooling air outlet are provided on the top surface of the sterilization cavity, and a sterilization guide rail is fixedly provided on the bottom surface of the sterilization cavity, and both ends of the sterilization guide rail are respectively provided with a first positioning groove and a second positioning groove;

[0009] The transport vehicle device comprises a vehicle body, a transport guide rail, a locking plate, a locking block, a locking drive assembly, a blocking frame, a blocking support, a blocking block and a blocking drive assembly, wherein the transport guide rail is fixedly arranged on the vehicle frame, the front end of the transport guide rail has a positioning pin, the locking plate is fixedly arranged on the front end of the vehicle body, the locking plate has a locking opening, the locking block is connected to the locking plate, the locking drive assembly is used to drive the locking block, the blocking frame and the blocking support are both fixedly arranged on the rear end of the vehicle body, the blocking block is connected to the blocking support, and the blocking drive assembly is used to drive the blocking block;

[0010] The bottom of the material placing frame is provided with rollers and a limiting beam;

[0011] When the transport vehicle device is used to transfer the material loading frame to the sterilization cabinet, the material loading frame is first located on the vehicle body, the roller is rollingly connected to the transport guide rail, the blocking frame is located behind the material loading frame, the blocking block rises and blocks the front of the limiting beam, and then the vehicle body approaches the feeding port, the positioning pin is inserted into the first positioning groove, the sterilization guide rail is spliced ​​with the transport guide rail, the first locking rod enters the locking port, the locking block enters the locking port again and clamps the first locking rod, then the blocking block descends to avoid the limiting beam, the material loading frame moves from the transport guide rail to the sterilization guide rail, the roller is rollingly connected to the sterilization guide rail, the material loading frame is located in the sterilization chamber, and finally the locking block withdraws from the locking port, the vehicle body leaves the feeding port, the first locking rod is disengaged from the locking port, and the positioning pin is pulled out of the first positioning groove;

[0012] When the transport vehicle device is used to receive the loading frame from the sterilization cabinet, the loading frame is first located in the sterilization chamber, the roller is rollingly connected to the sterilization guide rail, and then the vehicle body approaches the discharge port, the positioning pin is inserted into the second positioning groove, the sterilization guide rail is spliced ​​with the transport guide rail, the second locking rod enters the locking port, the locking block then enters the locking port and clamps the second locking rod, the loading frame moves from the sterilization guide rail to the transport guide rail, the roller is rollingly connected to the transport guide rail, the loading frame is located on the vehicle body, the blocking block rises and blocks in front of the limiting beam, the blocking frame is located behind the loading frame, and finally the locking block withdraws from the locking port, the vehicle body leaves the discharge port, the second locking rod is disengaged from the locking port, and the positioning pin is pulled out of the second positioning groove.

[0013] Furthermore, the locking drive assembly includes a locking support, a push rod, a compression spring, a limit plate and a connecting rod, the locking support is fixedly connected to the front end of the vehicle body, the locking support is provided with a sliding hole, the push rod passes through the sliding hole, the locking block is hinged to the locking plate, the locking block is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to the front end of the push rod, the rear end of the push rod is fixedly connected to the limit plate, and the compression spring is sleeved on the push rod and is located between the limit plate and the locking support.

[0014] Furthermore, the blocking drive assembly includes a remote control rod, a rotating shaft, a left limit rod and a right limit rod, the blocking support is provided with a rotating hole, the rotating shaft passes through the rotating hole, the front end of the rotating shaft is fixedly connected to the blocking block, the rear end of the rotating shaft is fixedly connected to the rocker, the left limit rod and the right limit rod are both fixedly arranged on the blocking support, and the rocker is located between the left limit rod and the right limit rod.

[0015] Furthermore, the transport vehicle device further comprises a push-pull drive assembly, a position sensor and an MCU, wherein the push-pull drive assembly is used to grasp and push-pull the material placement frame;

[0016] The positioning pin is telescopically arranged at the front end of the transport rail, a micro switch is installed between the positioning pin and the transport rail, and the position sensor is installed on the vehicle body;

[0017] The MCU is electrically connected to the push-pull drive assembly, the locking drive assembly, the blocking drive assembly, the position sensor, and the micro switch;

[0018] When the transport vehicle device is used to transfer the material loading frame to the sterilization cabinet, the position sensor detects the material loading frame, and the position sensor feeds back a first position signal to the MCU. After the positioning pin is inserted into the first positioning groove, the positioning pin triggers the micro switch, and the MCU receives the signal of the micro switch. The MCU first controls the locking drive component to make the locking block enter the locking port and clamp the first locking rod, and then controls the blocking drive component to make the blocking block descend to avoid the limiting beam, and then controls the push-pull drive component to push the material loading frame from the vehicle body to the sterilization chamber, and finally controls the locking drive component to make the locking block withdraw from the locking port;

[0019] When the transport vehicle device is used to receive the material loading frame from the sterilization cabinet, the position sensor does not detect the material loading frame, and the position sensor feeds back a second position signal to the MCU. After the positioning pin is inserted into the second positioning groove, the positioning pin triggers the micro switch, and the MCU receives the signal of the micro switch. The MCU first controls the locking drive assembly to make the locking block enter the locking port and jam the second locking rod, and then controls the push-pull drive assembly to pull the material loading frame from the sterilization chamber to the vehicle body, and then controls the blocking drive assembly to make the blocking block rise and block in front of the limiting beam, and finally controls the locking drive assembly to make the locking block exit the locking port.

[0020] Furthermore, the push-pull drive assembly includes an electric telescopic rod and an electromagnet, the electric telescopic rod is installed on the vehicle body, the electromagnet is installed at the telescopic end of the electric telescopic rod, the material loading frame is fixedly provided with an iron block, and the electromagnet is used to absorb the iron block.

[0021] Furthermore, the material placement frame has a multi-layer grid plate, and a plurality of trays arranged at intervals are placed on the grid plate, and the bottom surface of the tray is a mesh structure, and the tray is used to store materials waiting for sterilization;

[0022] The sterilization cabinet also has a temperature probe, a probe telescopic assembly and a PLC control system, and the temperature probe is connected to the sterilization chamber through the probe telescopic assembly;

[0023] The feed inlet is hinged with a first cabinet door, the feed inlet has a first lock buckle, and the first cabinet door has a first lock hole and a first door lock sensor;

[0024] The discharge port is hinged with a second cabinet door, the discharge port has a second lock catch, and the second cabinet door has a second lock hole and a second door lock sensor;

[0025] The PLC control system is electrically connected to the probe telescopic assembly, the first door lock sensor, and the second door lock sensor;

[0026] When the first cabinet door is in a closed state, the first lock buckle enters the first lock hole, and the first door lock sensor detects the first lock buckle and feeds back a signal to the PLC control system;

[0027] When the second cabinet door is in a closed state, the second lock buckle enters the second lock hole, and the second door lock sensor detects the second lock buckle and feeds back a signal to the PLC control system;

[0028] When the PLC control system recognizes that both the first cabinet door and the second cabinet door are in a closed state, the PLC control system controls the probe telescopic assembly to move the temperature probe from the inner wall of the sterilization chamber to the position of the loading frame, and then makes the temperature probe contact with the tray.

[0029] When the PLC control system recognizes that the first cabinet door or the second cabinet door is in an open state, the PLC control system controls the probe telescopic assembly to move the temperature probe back to the inner wall of the sterilization chamber;

[0030] The PLC control system puts the first cabinet door and the second cabinet door into an interlocked state.

[0031] Furthermore, the sterilization cabinet also has a spiral nozzle, an electric three-way reversing valve, a steam source device and a cooling water source device. The spiral nozzle is installed at the steam nozzle, the first inlet of the electric three-way reversing valve is connected to the steam source device through a first pipe, the second inlet of the electric three-way reversing valve is connected to the cooling water source device through a second pipe, the outlet of the electric three-way reversing valve is connected to the spiral nozzle through a third pipe, and the first pipe is installed with a pressure sensor, and the pressure sensor is electrically connected to the pressure display.

[0032] Furthermore, the material placement frame is provided with biological indicators and chemical indicators.

[0033] Further, the interior of the sterilizing cabinet is also provided with a cooling cavity, the top of the cooling cavity is communicated with the cooling air outlet, the cooling air outlet is equipped with a fan, the bottom of the sterilizing cavity and the bottom of the cooling cavity are provided with a communicating channel, the cooling cavity is equipped with a heat exchange tube, the inlet of the heat exchange tube is equipped with a solenoid valve, the bottom of the cooling cavity is provided with a discharge port, and the discharge port is equipped with a discharge valve;

[0034] The sterilization cabinet also includes a compressed air source device, and the sterilization chamber also has an air supply port, the air supply port is connected to the compressed air source device through an air pipe, and the air pipe is equipped with an air supply valve;

[0035] The solenoid valve and the air supply valve are opened and closed at the same time.

[0036] Compared with the background technology, the advantages of the present invention are: 1. The transport guide rail of the transport vehicle device matches the sterilization guide rail of the sterilization cabinet. The material placement frame is pushed from the vehicle body into the feeding port of the sterilization cabinet along the transport guide rail and the sterilization guide rail, or pulled from the feeding port of the sterilization chamber to the vehicle body. The guiding property of the mobile material placement frame is high, which improves the feeding and unloading efficiency of the sterilization cabinet; the vehicle body is firmly connected to the locking rod of the sterilization cabinet through the locking plate and the locking block to prevent the vehicle body from slipping during the transfer of the material placement frame; when the material placement frame is located on the vehicle body, the blocking frame and the blocking block limit the forward and backward movement of the material placement frame, and the connection between the roller and the transport guide rail limits the left and right movement of the material placement frame, so that the vehicle body stably transports the material placement frame to prevent the material placement frame from detaching from the vehicle body during transportation; there is no need to manually carry the material placement frame and place it in the sterilization chamber, which reduces manual labor.

[0037] 2. MCU controls the push-pull drive component, the locking drive component, and the blocking drive component to work in an orderly manner, automatically completes the locking and unlocking of the vehicle body and the sterilization cabinet body, automatically completes the restriction and release of the blocking block on the material placement frame, and automatically completes the push-pull operation of the material placement frame between the vehicle body and the sterilization chamber, which helps to improve the feeding and unloading efficiency of the sterilization cabinet.

[0038] 3. After the loading frame is located in the sterilization chamber, when the cabinet door is closed, the temperature probe is automatically placed on the loading frame to contact the tray. The temperature probe accurately detects the temperature change of the tray during the sterilization process. When the cabinet door is opened, the temperature probe is automatically retracted to prevent the temperature probe from interfering with the position transfer of the loading frame, which helps to reduce manual labor; the first cabinet door and the second cabinet door are in an interlocked state, which effectively prevents air convection in the sterilization chamber and reduces contamination.

[0039] 4. Steam is sprayed from the spiral nozzle to the surroundings and spreads densely throughout the sterilization chamber, thereby improving the heating rate and temperature uniformity of the materials on the material rack. The spiral nozzle can also spray cooling water, which is sprayed in the form of annular mist and densely spread throughout the sterilization chamber, so that the materials on the material rack are evenly cooled.

[0040] 5. The fan of the cooling air outlet makes the air circulate between the sterilization chamber and the cooling chamber. The flowing air takes away the heat and moisture of the sterilized materials in the tray of the material placement frame, and then exchanges heat and cools down in the heat exchange tube, so that the sterilized materials are quickly cooled to room temperature. The condensed water generated during the cooling process is discharged from the cabinet through the discharge port. During the cooling process, compressed air is automatically added to the sterilization chamber to maintain the pressure of the sterilization chamber stable, effectively eliminating unsafe factors such as bag and bottle explosion of sterilized materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0042] Figure 1 It is a structural schematic diagram of the ventilated moist heat sterilizing cabinet of the present invention.

[0043] Figure 2 Schematic diagram of a material placement frame placed on a transport vehicle device in an embodiment of the present invention.

[0044] Figure 3 It is a schematic diagram of the distribution of the transport rail, the locking plate, the blocking block, the blocking frame and the position sensor on the vehicle body in an embodiment of the present invention.

[0045] Figure 4 It is a schematic diagram of the locking block exiting the locking opening in an embodiment of the present invention.

[0046] Figure 5 It is a schematic diagram of the positions of the first cabinet door and the second cabinet door in the sterilization cabinet body in an embodiment of the present invention.

[0047] Figure 6 It is a schematic diagram of the positions of the first positioning groove and the second positioning groove on the sterilization guide rail in an embodiment of the present invention.

[0048] Figure 7 Schematic diagram of the first locking rod entering the locking opening of the locking plate in an embodiment of the present invention.

[0049] Figure 8 It is a schematic diagram of the locking block clamping the first locking rod in an embodiment of the present invention.

[0050] Fig. 9 It is a schematic diagram of the blocking block avoiding the limiting beam in an embodiment of the present invention.

[0051] Fig.10 The blocking block in the embodiment of the present invention is a schematic diagram of the blocking block in front of the limiting beam. Figure 1 .

[0052] Fig.11 The blocking block in the embodiment of the present invention is a schematic diagram of the blocking block in front of the limiting beam. Figure 2 .

[0053] Fig.12 It is a schematic diagram of the positions of the blocking block and the limiting beam in an embodiment of the present invention.

[0054] Fig.13 It is a schematic diagram of the positions of the electromagnet of the push-pull drive assembly and the iron block of the material placing frame in an embodiment of the present invention.

[0055] Fig.14 It is a schematic diagram of the push-pull drive assembly pushing the material placement frame into the sterilization chamber in an embodiment of the present invention.

[0056] Fig.15Schematic diagram of the positions of the transport rail, the positioning pin and the micro switch in the embodiment of the present invention.

[0057] Fig.16 It is a connection diagram of the MCU, the position sensor, the micro switch, the locking drive component, the blocking drive component, and the push-pull drive component in the embodiment of the present invention.

[0058] Fig.17 It is a schematic diagram of the positions of the temperature probe, the probe telescopic assembly, the material placement frame, and the tray in an embodiment of the present invention.

[0059] Fig.18 It is a connection diagram of a PLC control system, a first door lock sensor, a second door lock sensor, and a probe telescopic assembly in an embodiment of the present invention.

[0060] Fig.19 It is a connection diagram of a spiral nozzle, an electric three-way reversing valve, a steam source device, and a cooling water source device in an embodiment of the present invention.

[0061] Fig. 20 It is a schematic diagram of the positions of the cooling chamber, the sterilization chamber, and the air supply port in an embodiment of the present invention.

[0062] Figure numerals: sterilization cabinet 1; sterilization chamber 11; feed port 12; first locking rod 121; first cabinet door 122; first lock buckle 123; first lock hole 124; first door lock sensor 125; discharge port 13; second locking rod 131; second cabinet door 132; second lock buckle 133; second lock hole 134; second door lock sensor 135; steam nozzle 14; cooling air outlet 15; fan 151; sterilization guide rail 16; first positioning groove 161; second positioning groove 162; temperature probe 17; probe telescopic assembly 18; PLC control system 19; cooling chamber 110; channel 1101; heat exchange tube 1102; solenoid valve 1103; discharge valve 1104; air supply port 120; air supply valve 1201;

[0063] Transport vehicle device 2; vehicle body 21; position sensor 211; MCU 212; transport guide rail 22; positioning pin 221; micro switch 222; locking plate 23; locking port 231; locking block 24; locking drive assembly 25; locking support 251; push rod 252; compression spring 253; limit plate 254; connecting rod 255; blocking frame 26; blocking support 27; blocking block 28; blocking drive assembly 29; remote rod 291; rotating shaft 292; left limit rod 293; right limit rod 294; push-pull drive assembly 210; electric telescopic rod 2101; electromagnet 2102;

[0064] Material placing frame 3; roller 31; limiting beam 32; iron block 33; grid plate 34; tray 35;

[0065] Spiral nozzle 4; electric three-way reversing valve 41; steam source device 42; cooling water source device 43; pressure sensor 44. DETAILED DESCRIPTION

[0066] The embodiment of the present invention provides a ventilated moist heat sterilizer, which overcomes the shortcomings of the background technology that manual handling of a loading and unloading frame for loading and unloading the sterilizer is cumbersome and inconvenient, inefficient, and labor-intensive; it achieves the technical effect of improving the loading and unloading efficiency of the sterilizer, stably transporting the loading frame, and reducing manual labor.

[0067] The overall idea of ​​the technical solution of the embodiment of the present invention is as follows:

[0068] The loading frame is placed on the body of the transport vehicle in advance. The blocking frame and blocking block of the body limit the forward and backward movement of the loading frame. The rollers of the loading frame are connected to the transport guide rails to limit the left and right movement of the loading frame. The body transports the loading frame stably. The staff places the materials to be sterilized, such as glass bottles, ampoules, etc., on the tray, and then places multiple trays on the loading frame.

[0069] The transport vehicle device moves toward the feeding port of the sterilization cabinet, the transport guide rail is aligned and spliced ​​with the sterilization guide rail, the locking block and the locking block cooperate to lock the first locking rod located at the feeding port, so that the vehicle body and the sterilization cabinet body are firmly connected, and the blocking drive component causes the blocking block to descend to avoid the limit beam, and the material placement frame can move forward and be pushed from the transport guide rail to the sterilization guide rail. After the material placement frame enters the sterilization chamber, the locking drive component causes the locking block to avoid the first locking rod, and the vehicle body can leave the feeding port of the sterilization cabinet.

[0070] After completing the sterilization work, another transport vehicle device moves toward the discharge port of the sterilization cabinet, the transport guide rail is aligned and spliced ​​with the sterilization guide rail, the locking block and the locking block cooperate to lock the second locking rod located at the discharge port, so that the vehicle body and the sterilization cabinet are firmly connected, and the material placement frame is pulled from the sterilization guide rail to the transport guide rail. After the material placement frame enters the vehicle body, the blocking drive assembly makes the blocking block rise and block in front of the limit beam. The locking drive assembly makes the locking block avoid the second locking rod, and the vehicle body can leave the discharge port of the sterilization cabinet, and the transport vehicle device will transport the sterilized materials to the next process.

[0071] A push-pull drive assembly, a position sensor and an MCU are added to the vehicle body, and a micro switch is installed between the positioning pin and the transport guide rail, so as to realize the automatic transfer of the material placement frame between the vehicle body and the sterilization chamber.

[0072] The sterilization cabinet has the function of automatically placing the temperature probe on the material placement frame, and also has the function of spraying steam from the spiral nozzle to increase the material heating rate and temperature uniformity, and can selectively spray cooling water from the spiral nozzle to cool the material evenly.

[0073] The sterilization cabinet has the function of automatically replenishing compressed air during the ventilation and cooling process, maintaining the stable pressure of the sterilization chamber and effectively eliminating unsafe factors such as bursting bags and bottles of sterilized materials.

[0074] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0075] See also Figures 1 to 20 , a preferred embodiment of the present invention.

[0076] A ventilated moist heat sterilization cabinet, comprising:

[0077] Sterilization cabinet 1, transport vehicle device 2 and material placement frame 3;

[0078] The sterilization cabinet 1 has a sterilization chamber 11 inside, and the front and rear sides of the sterilization cabinet 1 are respectively provided with an inlet 12 and an outlet 13, and the inlet 12 and the outlet 13 are both communicated with the sterilization chamber 11, and a first locking rod 121 is fixedly provided at the bottom of the inlet 12, and a second locking rod 131 is fixedly provided at the bottom of the outlet 13, and a steam nozzle 14 and a cooling air outlet 15 are provided on the top surface of the sterilization chamber 11, and a sterilization guide rail 16 is fixedly provided on the bottom surface of the sterilization chamber 11, and both ends of the sterilization guide rail 16 are respectively provided with a first positioning groove 161 and a second positioning groove 162;

[0079] The transport vehicle device 2 includes a vehicle body 21, a transport guide rail 22, a locking plate 23, a locking block 24, a locking drive assembly 25, a blocking frame 26, a blocking support 27, a blocking block 28 and a blocking drive assembly 29, wherein the transport guide rail 22 is fixedly arranged on the vehicle frame, the front end of the transport guide rail 22 has a positioning pin 221, the locking plate 23 is fixedly arranged on the front end of the vehicle body 21, the locking plate 23 is provided with a locking opening 231, the locking block 24 is connected to the locking plate 23, the locking drive assembly 25 is used to drive the locking block 24, the blocking frame 26 and the blocking support 27 are fixedly arranged on the rear end of the vehicle body 21, the blocking block 28 is connected to the blocking support 27, and the blocking drive assembly 29 is used to drive the blocking block 28;

[0080] The bottom of the material placing frame 3 is provided with a roller 31 and a limiting beam 32;

[0081] When the transport vehicle device 2 is used to transfer the material loading frame 3 to the sterilization cabinet 1, the material loading frame 3 is first located on the vehicle body 21, the roller 31 is rollingly connected with the transport guide rail 22, the blocking frame 26 is located behind the material loading frame 3, the blocking block 28 rises and blocks in front of the limiting beam 32, and then the vehicle body 21 approaches the feed port 12, the positioning pin 221 is inserted into the first positioning groove 161, the sterilization guide rail 16 is spliced ​​with the transport guide rail 22, the first locking rod 121 enters the locking port 231, and the locking rod 231 is locked. The fixed block 24 then enters the locking port 231 and clamps the first locking rod 121, then the blocking block 28 descends to avoid the limiting beam 32, the material loading frame 3 moves from the transport guide rail 22 to the sterilization guide rail 16, the roller 31 is rollingly connected with the sterilization guide rail 16, the material loading frame 3 is located in the sterilization chamber 11, and finally the locking block 24 withdraws from the locking port 231, the vehicle body 21 leaves the feed port 12, the first locking rod 121 is disengaged from the locking port 231, and the positioning pin 221 is pulled out of the first positioning groove 161;

[0082] When the transport vehicle device 2 is used to receive the loading frame 3 from the sterilization cabinet 1, the loading frame 3 is first located in the sterilization chamber 11, the roller 31 is rollingly connected with the sterilization guide rail 16, and then the vehicle body 21 approaches the discharge port 13, the positioning pin 221 is inserted into the second positioning groove 162, the sterilization guide rail 16 is spliced ​​with the transport guide rail 22, the second locking rod 131 enters the locking port 231, and the locking block 24 enters the locking port 231 and clamps the second locking rod 131. The loading frame 3 moves from the sterilization guide rail 16 to the transport guide rail 22, the roller 31 is rollingly connected to the transport guide rail 22, the loading frame 3 is located at the vehicle body 21, the blocking block 28 rises to block the front of the limiting beam 32, the blocking frame 26 is located at the rear of the loading frame 3, and finally the locking block 24 withdraws from the locking port 231, the vehicle body 21 leaves the discharge port 13, the second locking rod 131 is disengaged from the locking port 231, and the positioning pin 221 is pulled out of the second positioning groove 162.

[0083] The advantages of the present invention are as follows: the transport rail 22 of the transport vehicle device 2 matches the sterilization rail 16 of the sterilization cabinet 1, the material placement frame 3 is pushed from the vehicle body 21 into the inlet 12 of the sterilization cabinet 1 along the transport rail 22 and the sterilization rail 16, or is pulled from the outlet 13 of the sterilization chamber 11 to the vehicle body 21, the guiding performance of the mobile material placement frame 3 is high, and the feeding and discharging efficiency of the sterilization cabinet is improved; the vehicle body 21 is firmly connected to the locking rod of the sterilization cabinet 1 through the locking plate 23 and the locking block 24, avoiding The vehicle body 21 is prevented from slipping during the transfer of the loading frame 3; when the loading frame 3 is located on the vehicle body 21, the blocking frame 26 and the blocking block 28 limit the forward and backward movement of the loading frame 3, and the connection between the roller 31 and the transport guide rail 22 limits the left and right movement of the loading frame 3, so that the vehicle body 21 can stably transport the loading frame 3 and prevent the loading frame 3 from detaching from the vehicle body 21 during transportation; there is no need to manually carry the loading frame 3 and place it in the sterilization chamber 11, which reduces manual labor.

[0084] In this embodiment, the roller 31 can be replaced with a slider, and the groove of the slider contacts the transport rail 22 or the sterilization rail 16, which can not only limit the left and right movement of the material loading frame 3, but also roll between the transport rail 22. The body 21 can be the body 21 of a trolley or the body 21 of a motor vehicle. The material loading frame 3 can be pushed manually to move from the transport rail 22 to the sterilization rail 16, and can be pulled manually to move from the sterilization rail 16 to the transport rail 22. There are two sterilization rails 16, which are fixedly arranged on the left and right sides of the bottom surface of the sterilization chamber 11 respectively; there are two transport rails 22, which are fixedly arranged on the left and right sides of the body 21 respectively. The bottom of the material loading frame 3 is surrounded by four limiting beams 32.

[0085] The locking drive assembly 25 includes a locking support 251, a push rod 252, a compression spring 253, a limit plate 254 and a connecting rod 255. The locking support 251 is fixedly connected to the front end of the vehicle body 21. The locking support 251 is provided with a sliding hole, and the push rod 252 passes through the sliding hole. The locking block 24 is hinged to the locking plate 23. The locking block 24 is hinged to one end of the connecting rod 255, and the other end of the connecting rod 255 is hinged to the front end of the push rod 252. The rear end of the push rod 252 is fixedly connected to the limit plate 254. The compression spring 253 is sleeved on the push rod 252 and is located between the limit plate 254 and the locking support 251. The beneficial effect of this technical solution is that the locking drive assembly 25 can be in manual mode. The staff manually operates the push rod 252, the push rod 252 moves forward, the compression spring 253 is in a compressed state, and the push rod 252 causes the locking block 24 to withdraw from the locking port 231 through the connecting rod 255, so that the first locking rod 121 or the second locking rod 131 can enter the locking port 231; the staff releases the push rod 252, the compression spring 253 resets, the push rod 252 moves backward, and the push rod 252 causes the locking block 24 to enter the locking port 231 through the connecting rod 255.

[0086] The blocking drive assembly 29 includes a rocker 291, a rotating shaft 292, a left limit rod 293 and a right limit rod 294. The blocking support 27 is provided with a rotating hole, and the rotating shaft 292 passes through the rotating hole. The front end of the rotating shaft 292 is fixedly connected to the blocking block 28, and the rear end of the rotating shaft 292 is fixedly connected to the rocker. The left limit rod 293 and the right limit rod 294 are both fixedly arranged on the blocking support 27, and the rocker is located between the left limit rod 293 and the right limit rod 294. The beneficial effect of this technical solution is that the blocking drive assembly 29 can be in manual mode, and the staff operates the rocker. When the rocker abuts against the left limit rod 293, the rocker makes the blocking block 28 rise to block the front of the limit beam 32 of the material placing frame 3 through the rotating shaft 292; when the rocker abuts against the right limit rod 294, the rocker makes the blocking block 28 fall to avoid the limit beam 32 of the material placing frame 3 through the rotating shaft 292.

[0087] The transport vehicle device 2 further includes a push-pull drive component 210, a position sensor 211 and an MCU 212. The push-pull drive component 210 is used to grasp and push-pull the material placement frame 3.

[0088] The positioning pin 221 is telescopically arranged at the front end of the transport rail 22, a micro switch 222 is installed between the positioning pin 221 and the transport rail 22, and the position sensor 211 is installed on the vehicle body 21;

[0089] The MCU 212 is electrically connected to the push-pull drive assembly 210 , the locking drive assembly 25 , the blocking drive assembly 29 , the position sensor 211 , and the micro switch 222 ;

[0090] When the transport vehicle device 2 is used to transfer the material loading frame 3 to the sterilization cabinet 1, the position sensor 211 detects the material loading frame 3, and the position sensor 211 feeds back a first position signal to the MCU 212. After the positioning pin 221 is inserted into the first positioning groove 161, the positioning pin 221 triggers the micro switch 222, and the MCU 212 receives the signal of the micro switch 222. The MCU 212 first controls the locking drive component 25 to make the locking block 24 enter the locking port 231 and clamp the first locking rod 121, and then controls the blocking drive component 29 to make the blocking block 28 descend to avoid the limiting beam 32, and then controls the push-pull drive component 210 to push the material loading frame 3 from the vehicle body 21 to the sterilization chamber 11, and finally controls the locking drive component 25 to make the locking block 24 withdraw from the locking port 231;

[0091] When the transport vehicle device 2 is used to receive the material storage frame 3 from the sterilization cabinet 1, the position sensor 211 does not detect the material storage frame, and the position sensor 211 feeds back the second position signal to the MCU212. After the positioning pin 221 is inserted into the second positioning groove 162, the positioning pin 221 triggers the micro switch 222, and the MCU212 receives the signal of the micro switch 222. The MCU212 first controls the locking drive component 25 to make the locking block 24 enter the locking port 231 and jam the second locking rod 131, and then controls the push-pull drive component 210 to pull the material storage frame 3 from the sterilization chamber 11 to the vehicle body 21, and then controls the blocking drive component 29 to make the blocking block 28 rise and block in front of the limiting beam 32, and finally controls the locking drive component 25 to make the locking block 24 exit the locking port 231. The beneficial effect of this technical solution is that MCU212 controls the push-pull drive assembly 210, the locking drive assembly 25, and the blocking drive assembly 29 to work in an orderly manner, automatically completes the locking and unlocking of the vehicle body 21 and the sterilization cabinet body 1, automatically completes the restriction and release of the material loading frame 3 by the blocking block 28, and automatically completes the push-pull operation of the material loading frame 3 between the vehicle body 21 and the sterilization chamber 11, which helps to improve the feeding and unloading efficiency of the sterilization cabinet. The position sensor 211 is a photoelectric sensor. A spring is installed between the positioning pin 221 and the transport guide rail 22. When the positioning pin 221 is out of the first positioning groove 161 or the second positioning groove 162, the spring is reset so that the positioning pin 221 does not contact the micro switch 222.

[0092] The locking drive assembly 25 can be an electric mode, and the locking drive assembly 25 includes an electric telescopic rod 2101, which is electrically connected to the MCU 212, and the telescopic end of the electric telescopic rod 2101 is fixedly connected to the rear end of the push rod 252. The blocking drive assembly 29 can be an electric mode, and the blocking drive assembly 29 includes an angle motor, which is electrically connected to the MCU 212, and the output end of the angle motor is in transmission connection with the rotating shaft 292, and the angle motor drives the rotating shaft 292 to rotate clockwise or counterclockwise at a specified angle.

[0093] The push-pull drive assembly 210 includes an electric telescopic rod 2101 and an electromagnet 2102. The electric telescopic rod 2101 is installed on the vehicle body 21, and the electromagnet 2102 is installed at the telescopic end of the electric telescopic rod 2101. The material loading frame 3 is fixedly provided with an iron block 33, and the electromagnet 2102 is used to absorb the iron block 33. The beneficial effect of this technical solution is that the push drive assembly replaces manual labor and automatically pushes and pulls the material loading frame 3, which helps to reduce manual labor. The electric telescopic rod 2101 with the electromagnet 2102 abuts against the iron block 33 of the material loading frame 3, and the electromagnet 2102 is energized to absorb the iron block 33, so that the telescopic movement of the electric telescopic rod 2101 causes the material loading frame 3 to move back and forth; when the material loading frame 3 reaches the sterilization chamber 11, the electromagnet 2102 is powered off to release the iron block 33, and the electric telescopic rod 2101 returns to the vehicle body 21 with the electromagnet 2102.

[0094] The material placement frame 3 has a multi-layer mesh plate 34, and a plurality of trays 35 arranged at intervals are placed on the mesh plate 34. The bottom surface of the tray 35 is a mesh structure, and the tray 35 is used to store materials waiting for sterilization;

[0095] The sterilization cabinet 1 also has a temperature probe 17, a probe telescopic assembly 18 and a PLC control system 19, and the temperature probe 17 is connected to the sterilization chamber 11 through the probe telescopic assembly 18;

[0096] The feed inlet 12 is hinged with a first cabinet door 122, the feed inlet 12 has a first lock buckle 123, and the first cabinet door 122 has a first lock hole 124 and a first door lock sensor 125;

[0097] The discharge port 13 is hinged with a second cabinet door 132 , the discharge port 13 has a second lock buckle 133 , and the second cabinet door 132 has a second lock hole 134 and a second door lock sensor 135 ;

[0098] The PLC control system 19 is electrically connected to the probe telescopic assembly 18 , the first door lock sensor 125 , and the second door lock sensor 135 ;

[0099] When the first cabinet door 122 is in a closed state, the first lock buckle 123 enters the first lock hole 124, and the first door lock sensor 125 detects the first lock buckle 123 and feeds back a signal to the PLC control system 19;

[0100] When the second cabinet door 132 is in a closed state, the second lock buckle 133 enters the second lock hole 134, and the second door lock sensor 135 detects the second lock buckle 133 and feeds back a signal to the PLC control system 19;

[0101] When the PLC control system 19 recognizes that both the first cabinet door 122 and the second cabinet door 132 are in the closed state, the PLC control system 19 controls the probe telescopic assembly 18 to move the temperature probe 17 from the inner wall of the sterilization chamber 11 to the position of the material loading frame 3, and then makes the temperature probe 17 contact with the tray 35;

[0102] When the PLC control system 19 recognizes that the first cabinet door 122 or the second cabinet door 132 is in an open state, the PLC control system 19 controls the probe telescopic assembly 18 to move the temperature probe 17 back to the inner wall of the sterilization chamber 11;

[0103] The PLC control system 19 puts the first cabinet door 122 and the second cabinet door 132 in an interlocked state. The beneficial effect of this technical solution is that after the material loading frame 3 is located in the sterilization chamber 11, when the cabinet door is closed, the temperature probe 17 is automatically placed on the material loading frame 3 to contact the tray 35, and the temperature probe 17 accurately detects the temperature change of the tray 35 during the sterilization process. When the cabinet door is opened, the temperature probe 17 is automatically retracted to prevent the temperature probe 17 from interfering with the position transfer of the material loading frame 3, which helps to reduce manual labor; the first cabinet door 122 and the second cabinet door 132 in an interlocked state effectively prevent air convection from occurring in the sterilization chamber 11, reducing contamination.

[0104] The mesh structure of the grid plate 34 and the tray 35 of the material loading frame 3 helps steam to heat the materials in the tray 35 during the sterilization process, and helps the materials in the tray 35 to dissipate heat and dry during ventilation and cooling. The PLC control system 19 is a product of the prior art. The probe telescopic assembly 18 is an electric telescopic rod of the prior art. The specifications of the material loading frame 3 are predetermined, and the positions of the temperature probe 17 and the probe telescopic assembly 18 in the sterilization chamber 11 are set accordingly, so that the temperature probe 17 is smoothly placed on the material loading frame 3 to contact the tray 35, and the temperature probe 17 feeds back the detected temperature signal to the PLC control system 19 and displays it on the display screen. The first cabinet door 122 and the second cabinet door 132 are in an interlocked state, that is, the second cabinet door 132 can be opened only when the first cabinet door 122 is closed; the first cabinet door 122 can be opened only when the second cabinet door 132 is closed; the first cabinet door 122 and the second cabinet door 132 cannot both be opened, and the first cabinet door 122 and the second cabinet door 132 can both be closed, and the PLC control system 19 identifies the states of the first cabinet door 122 and the second cabinet door 132. Sterilization is performed only when the first cabinet door 122 and the second cabinet door 132 are both closed.

[0105] The sterilizing cabinet 1 also has a spiral nozzle 4, an electric three-way reversing valve 41, a steam source device 42 and a cooling water source device 43. The spiral nozzle 4 is installed at the steam nozzle 14. The first inlet of the electric three-way reversing valve 41 is connected to the steam source device 42 through a first pipe, the second inlet of the electric three-way reversing valve 41 is connected to the cooling water source device 43 through a second pipe, and the outlet of the electric three-way reversing valve 41 is connected to the spiral nozzle 4 through a third pipe. The first pipe is equipped with a pressure sensor 44, and the pressure sensor 44 is electrically connected to the pressure display. The beneficial effect of this technical solution is that the steam sprayed from the spiral nozzle 4 is dispersed to the surroundings and densely distributed in the entire sterilization chamber 11, thereby improving the material heating speed and temperature uniformity of the material loading frame 3; the spiral nozzle 4 can also choose to spray cooling water, which is in an annular mist shape after being sprayed, densely distributed in the entire sterilization chamber 11, so that the material of the loading frame 3 is evenly cooled.

[0106] The electric three-way reversing valve 41 is electrically connected to the PLC control system 19, and the electric three-way reversing valve 41 is used to select whether to deliver steam to the spiral nozzle 4 or to deliver cooling water to the spiral nozzle 4. The pressure sensor 44 detects the steam pressure and feeds it back to the pressure display to display the steam pressure value, which is convenient for the staff to understand the steam situation, find out the steam pipeline blockage in time and repair it, which helps to increase the temperature rise rate during the steam sterilization process.

[0107] The material loading frame 3 is provided with a biological indicator (not shown) and a chemical indicator (not shown). The beneficial effect of this technical solution is that it is easy to understand the sterilization results and sterilization temperature. The biological indicator is a microorganism with high resistance to sterilization treatment inoculated on a test paper and then packaged as an indicator for judging the sterilization effect. The chemical indicator is a special ink that changes its color with the change of temperature during sterilization, which is applied on paper as an indicator of sterilization conditions.

[0108] The sterilizing cabinet 1 further has a cooling chamber 110 inside, the top of the cooling chamber 110 is communicated with the cooling air outlet 15, the cooling air outlet 15 is equipped with a fan 151, the bottom of the sterilizing chamber 11 is provided with a communicating channel 1101 with the bottom of the cooling chamber 110, the cooling chamber 110 is equipped with a heat exchange tube 1102, the inlet of the heat exchange tube 1102 is equipped with a solenoid valve 1103, the bottom of the cooling chamber 110 has a discharge port, the discharge port is equipped with a discharge valve 1104;

[0109] The sterilizing cabinet 1 further comprises a compressed air source device, and the sterilizing chamber 11 further comprises an air supply port 120, wherein the air supply port 120 is connected to the compressed air source device via an air pipe, and the air pipe is provided with an air supply valve 1201;

[0110] The electromagnetic valve 1103 and the air supply valve 1201 are opened and closed at the same time. The beneficial effect of this technical solution is that the fan 151 of the cooling air outlet 15 allows air to circulate between the sterilization chamber 11 and the cooling chamber 110, and the flowing air takes away the heat and moisture of the sterilized material in the tray 35 of the material placement frame 3, and then heat exchange and cool down in the heat exchange tube 1102, so that the sterilized material is quickly cooled to room temperature, and the condensed water generated during the cooling process is discharged from the cabinet through the discharge port. During the cooling process, compressed air is automatically added to the sterilization chamber 11 to maintain the pressure of the sterilization chamber 11 stable, effectively eliminating unsafe factors such as bag and bottle explosion of the sterilized material.

[0111] The inlet of the heat exchange tube 1102 is connected to the cooling water source device 43 of the prior art, and the outlet of the heat exchange tube 1102 is connected to the heat dissipation device of the prior art; an air pressure sensor is installed in the sterilization chamber 11 to detect the air pressure of the sterilization chamber 11 and feed it back to the PLC control system 19; the PLC control system 19 adjusts the air supply valve 1201 to maintain the sterilization chamber 11 at a specified air pressure during the process of adding compressed air to the sterilization chamber 11. The compressed air source device is a prior art product.

[0112] The working method of the ventilated moist heat sterilizer of the present invention is as follows: the loading frame 3 is pre-placed on the body 21 of the transport vehicle device 2, the staff places the materials to be sterilized on the tray 35, and then places multiple trays 35 on the loading frame 3; the transport vehicle device 2 moves toward the inlet 12 of the sterilization cabinet 1, opens the first cabinet door 122, and the second cabinet door 132 is in a closed state at this time, the transport guide rail 22 is aligned and spliced ​​with the sterilization guide rail 16, the locking plate 23 and the locking block 24 cooperate to lock the first locking rod 121 located at the inlet 12, the blocking block 28 descends to avoid the limiting beam 32 of the loading frame 3, and the push-pull drive assembly 210 pushes the loading frame 3 from the transport guide rail 22 to the sterilization guide rail 16. After the loading frame 3 arrives in the sterilization chamber 11, the locking block 24 unlocks the first locking rod 121, the transport vehicle device 2 leaves the inlet 12 of the sterilization cabinet 1, closes the first cabinet door 122, and the temperature probe 17 is placed on the loading frame 3 and contacts the tray 35.

[0113] Steam is input into the sterilization chamber 11, and the steam sterilizes the materials in the tray 35 with wet heat. After the sterilization work is completed, the spiral nozzle 4 sprays cooling water, or ventilation cooling is adopted, and the fan 151 circulates air between the sterilization chamber 11 and the cooling chamber 110, and the air takes away the heat and moisture of the materials in the tray 35. The heat exchange tube 1102 exchanges heat and cools the flowing air, so that the sterilized materials are cooled to room temperature. The condensed water generated during the cooling process is discharged from the sterilization cabinet 1 through the discharge port, and compressed air is supplemented during the cooling process.

[0114] After cooling is completed, the second cabinet door 132 is opened, and the temperature probe 17 is transported from the loading frame 3 to the inner wall of the sterilization chamber 11. At this time, the first cabinet door 122 is in a closed state, and the other transport vehicle device 2 moves toward the discharge port 13 of the sterilization cabinet 1. The transport guide rail 22 is aligned and spliced ​​with the sterilization guide rail 16. The locking plate 23 and the locking block 24 cooperate to lock the second locking rod 131 located at the discharge port 13. The push-pull drive assembly 210 pulls the loading frame 3 from the sterilization guide rail 16 to the transport guide rail 22. After the loading frame 3 reaches the vehicle body 21, the blocking block 28 rises and blocks in front of the limiting beam 32 of the loading frame 3. Then the locking block 24 unlocks the second locking rod 131, and the transport vehicle device 2 leaves the discharge port 13 of the sterilization cabinet 1 to transport the sterilized materials to the next process.

[0115] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A ventilated moist heat sterilizer, characterized in that: include: Sterilization cabinet, transport trolley device and material rack; The sterilization cabinet has a sterilization cavity inside, and the front and rear sides of the sterilization cabinet are respectively provided with an inlet and an outlet, and the inlet and the outlet are both communicated with the sterilization cavity, a first locking rod is fixedly provided at the bottom of the inlet, and a second locking rod is fixedly provided at the bottom of the outlet, a steam nozzle and a cooling air outlet are provided on the top surface of the sterilization cavity, and a sterilization guide rail is fixedly provided on the bottom surface of the sterilization cavity, and both ends of the sterilization guide rail are respectively provided with a first positioning groove and a second positioning groove; The transport vehicle device comprises a vehicle body, a transport guide rail, a locking plate, a locking block, a locking drive assembly, a blocking frame, a blocking support, a blocking block and a blocking drive assembly, wherein the transport guide rail is fixedly arranged on the vehicle frame, the front end of the transport guide rail has a positioning pin, the locking plate is fixedly arranged on the front end of the vehicle body, the locking plate has a locking opening, the locking block is connected to the locking plate, the locking drive assembly is used to drive the locking block, the blocking frame and the blocking support are both fixedly arranged on the rear end of the vehicle body, the blocking block is connected to the blocking support, and the blocking drive assembly is used to drive the blocking block; The bottom of the material placing frame is provided with rollers and a limiting beam; When the transport vehicle device is used to transfer the material loading frame to the sterilization cabinet, the material loading frame is first located on the vehicle body, the roller is rollingly connected to the transport guide rail, the blocking frame is located behind the material loading frame, the blocking block rises and blocks the front of the limiting beam, and then the vehicle body approaches the feeding port, the positioning pin is inserted into the first positioning groove, the sterilization guide rail is spliced ​​with the transport guide rail, the first locking rod enters the locking port, the locking block enters the locking port again and clamps the first locking rod, then the blocking block descends to avoid the limiting beam, the material loading frame moves from the transport guide rail to the sterilization guide rail, the roller is rollingly connected to the sterilization guide rail, the material loading frame is located in the sterilization chamber, and finally the locking block withdraws from the locking port, the vehicle body leaves the feeding port, the first locking rod is disengaged from the locking port, and the positioning pin is pulled out of the first positioning groove; When the transport vehicle device is used to receive the loading frame from the sterilization cabinet, the loading frame is first located in the sterilization chamber, the roller is rollingly connected to the sterilization guide rail, and then the vehicle body approaches the discharge port, the positioning pin is inserted into the second positioning groove, the sterilization guide rail is spliced ​​with the transport guide rail, the second locking rod enters the locking port, the locking block then enters the locking port and clamps the second locking rod, the loading frame moves from the sterilization guide rail to the transport guide rail, the roller is rollingly connected to the transport guide rail, the loading frame is located on the vehicle body, the blocking block rises and blocks in front of the limiting beam, the blocking frame is located behind the loading frame, and finally the locking block withdraws from the locking port, the vehicle body leaves the discharge port, the second locking rod is disengaged from the locking port, and the positioning pin is pulled out of the second positioning groove.

2. A ventilated moist heat sterilizer according to claim 1, characterized in that: The locking drive assembly includes a locking support, a push rod, a compression spring, a limit plate and a connecting rod. The locking support is fixedly connected to the front end of the vehicle body. The locking support is provided with a sliding hole. The push rod passes through the sliding hole. The locking block is hinged to the locking plate. The locking block is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the front end of the push rod. The rear end of the push rod is fixedly connected to the limit plate. The compression spring is sleeved on the push rod and is located between the limit plate and the locking support.

3. A ventilated moist heat sterilizer according to claim 1, characterized in that: The blocking drive assembly includes a remote control rod, a rotating shaft, a left limit rod and a right limit rod. The blocking support is provided with a rotating hole, the rotating shaft passes through the rotating hole, the front end of the rotating shaft is fixedly connected to the blocking block, and the rear end of the rotating shaft is fixedly connected to the rocker. The left limit rod and the right limit rod are both fixedly arranged on the blocking support, and the rocker is located between the left limit rod and the right limit rod.

4. A ventilated moist heat sterilizer according to claim 1, characterized in that: The transport vehicle device further includes a push-pull drive assembly, a position sensor and an MCU, wherein the push-pull drive assembly is used to grasp and push-pull the material placement frame; The positioning pin is telescopically arranged at the front end of the transport rail, a micro switch is installed between the positioning pin and the transport rail, and the position sensor is installed on the vehicle body; The MCU is electrically connected to the push-pull drive assembly, the locking drive assembly, the blocking drive assembly, the position sensor, and the micro switch; When the transport vehicle device is used to transfer the material loading frame to the sterilization cabinet, the position sensor detects the material loading frame, and the position sensor feeds back a first position signal to the MCU. After the positioning pin is inserted into the first positioning groove, the positioning pin triggers the micro switch, and the MCU receives the signal of the micro switch. The MCU first controls the locking drive component to make the locking block enter the locking port and clamp the first locking rod, and then controls the blocking drive component to make the blocking block descend to avoid the limiting beam, and then controls the push-pull drive component to push the material loading frame from the vehicle body to the sterilization chamber, and finally controls the locking drive component to make the locking block withdraw from the locking port; When the transport vehicle device is used to receive the material loading frame from the sterilization cabinet, the position sensor does not detect the material loading frame, and the position sensor feeds back a second position signal to the MCU. After the positioning pin is inserted into the second positioning groove, the positioning pin triggers the micro switch, and the MCU receives the signal of the micro switch. The MCU first controls the locking drive assembly to make the locking block enter the locking port and jam the second locking rod, and then controls the push-pull drive assembly to pull the material loading frame from the sterilization chamber to the vehicle body, and then controls the blocking drive assembly to make the blocking block rise and block in front of the limiting beam, and finally controls the locking drive assembly to make the locking block exit the locking port.

5. A ventilated moist heat sterilizer according to claim 1, characterized in that: The push-pull drive assembly includes an electric telescopic rod and an electromagnet. The electric telescopic rod is installed on the vehicle body, and the electromagnet is installed on the telescopic end of the electric telescopic rod. An iron block is fixedly provided on the material placement frame, and the electromagnet is used to absorb the iron block.

6. A ventilated moist heat sterilizer according to claim 1, characterized in that: The material placement frame has a multi-layer grid plate, and a plurality of trays arranged at intervals are placed on the grid plate. The bottom surface of the tray is a mesh structure, and the tray is used to store materials waiting for sterilization; The sterilization cabinet also has a temperature probe, a probe telescopic assembly and a PLC control system, and the temperature probe is connected to the sterilization chamber through the probe telescopic assembly; The feed inlet is hinged with a first cabinet door, the feed inlet has a first lock buckle, and the first cabinet door has a first lock hole and a first door lock sensor; The discharge port is hinged with a second cabinet door, the discharge port has a second lock catch, and the second cabinet door has a second lock hole and a second door lock sensor; The PLC control system is electrically connected to the probe telescopic assembly, the first door lock sensor, and the second door lock sensor; When the first cabinet door is in a closed state, the first lock buckle enters the first lock hole, and the first door lock sensor detects the first lock buckle and feeds back a signal to the PLC control system; When the second cabinet door is in a closed state, the second lock buckle enters the second lock hole, and the second door lock sensor detects the second lock buckle and feeds back a signal to the PLC control system; When the PLC control system recognizes that both the first cabinet door and the second cabinet door are in a closed state, the PLC control system controls the probe telescopic assembly to move the temperature probe from the inner wall of the sterilization chamber to the position of the material loading frame, and then makes the temperature probe contact with the tray; When the PLC control system recognizes that the first cabinet door or the second cabinet door is in an open state, the PLC control system controls the probe telescopic assembly to move the temperature probe back to the inner wall of the sterilization chamber; The PLC control system puts the first cabinet door and the second cabinet door into an interlocked state.

7. A ventilated moist heat sterilizer according to claim 1, characterized in that: The sterilization cabinet also has a spiral nozzle, an electric three-way reversing valve, a steam source device and a cooling water source device. The spiral nozzle is installed at the steam nozzle. The first inlet of the electric three-way reversing valve is connected to the steam source device through a first pipe, the second inlet of the electric three-way reversing valve is connected to the cooling water source device through a second pipe, and the outlet of the electric three-way reversing valve is connected to the spiral nozzle through a third pipe. A pressure sensor is installed on the first pipe, and the pressure sensor is electrically connected to the pressure display.

8. The ventilated moist heat sterilizer according to claim 1, characterized in that: The material placing frame is provided with biological indicators and chemical indicators.

9. A ventilated moist heat sterilizer according to claim 1, characterized in that: The sterilizing cabinet also has a cooling cavity inside, the top of the cooling cavity is communicated with the cooling air outlet, the cooling air outlet is equipped with a fan, the bottom of the sterilizing cavity and the bottom of the cooling cavity are provided with a communicating channel, the cooling cavity is equipped with a heat exchange tube, the inlet of the heat exchange tube is equipped with a solenoid valve, the bottom of the cooling cavity has a discharge port, and the discharge port is equipped with a discharge valve; The sterilization cabinet also includes a compressed air source device, and the sterilization chamber also has an air supply port, the air supply port is connected to the compressed air source device through an air pipe, and the air pipe is equipped with an air supply valve; The solenoid valve and the air supply valve are opened and closed at the same time.

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