Pressure-adjustable pure steam sterilization cabinet

Abstract

The utility model relates to the technical field of sterilization cabinets, in particular to a pressure-adjustable pure steam sterilization cabinet, which comprises a cabinet body, a sealing door and a door lock assembly, the front side of the cabinet body is hinged with the sealing door, the door lock assembly is arranged on the sealing door, the door lock assembly consists of a screw rod and a rotating disc, one end of the screw rod penetrates through the sealing door and then is in threaded connection with the cabinet body, and the other end of the screw rod extends out of the sealing door and is fixedly connected with the rotating disc. According to the device, the pressure sensor and the PLC control panel are adopted to monitor and adjust the pressure in the cabinet in real time, and the PLC control panel calculates the opening degree of the electronic adjusting valve needing to be adjusted through an algorithm according to the preset temperature and pressure values, so that the electronic adjusting valve can accurately control the pressure in the cabinet, it is ensured that the pressure is always kept within the set range, and the safety of the cabinet is improved. And the stability of temperature and pressure in the cabinet is ensured, so that the energy conservation, high efficiency and reliability of the sterilization process are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sterilization cabinet, especially to a pure steam sterilization cabinet of adjustable pressure. BACKGROUND

[0002] Pure steam sterilization cabinet is a kind of high-efficiency sterilization equipment widely used in medical, pharmaceutical, food processing and other industries, using high-temperature and high-pressure pure steam to sterilize medical devices, drugs, packaging materials and the like to ensure that these items achieve a sterile state before use, and pure steam sterilization has the characteristics of high efficiency, speed and reliability, and can kill most bacteria, viruses, fungi and their spores, so it has an irreplaceable position in sterile production environment.

[0003] The patent with the patent authorization announcement number CN211272521U discloses a pure steam sterilization cabinet capable of effectively preventing steam leakage, which realizes the close cooperation of the outer cabinet door and the cabinet body through the cooperation of the lock tongue, the lock tongue groove and the hydraulic cylinder, effectively prevents steam leakage, has compact and reliable structure, low unit cost, convenient maintenance, but still has some deficiencies in actual application, the sterilization cabinet is only provided with a steam outlet for exhaust pressure relief, lacks flexible pressure regulation mechanism, in some specific application scenarios, the single exhaust mode may lead to inaccurate pressure regulation, thereby affecting the sterilization effect and the safety of the equipment, thereby limiting the application range, cannot meet the sterilization needs of different types and sizes of items, and in the case of not needing high pressure, the fixed pressure setting will cause unnecessary energy waste, increase operating cost, and does not meet the requirements of energy saving and environmental protection.

[0004] Therefore, the patent provides a pure steam sterilization cabinet capable of adjusting pressure. SUMMARY

[0005] In order to overcome the shortcomings of the existing patent that only has a single exhaust pressure relief mode, the pressure regulation is not flexible, the adaptability is poor, and the energy consumption is high, the utility model provides a pure steam sterilization cabinet capable of adjusting pressure.

[0006] To achieve the above problems, the utility model discloses the following technical scheme: A pressure-adjustable pure steam sterilization cabinet, comprising a cabinet body, a sealing door and a door lock assembly, the front side of the cabinet body is hinged with the sealing door, and the door lock assembly is installed on the sealing door, which is composed of a lead screw and a rotary disc, wherein the lead screw is screwed on the sealing door, one end is screwed with the cabinet body after penetrating through the sealing door, realizing locking function, the other end extends out of the sealing door and is fixedly connected with the rotary disc, a placing rack is arranged in the cabinet body, a key is installed on the side cabinet body, a PLC control panel is arranged beside the key, a pressure sensor is installed on the top of the cabinet body, a gas release pipe is arranged at the middle position of the top of the cabinet body, an electronic regulating valve is assembled on the gas release pipe, and the pressure sensor and the electronic regulating valve are electrically connected with the PLC control panel.

[0007] As an improvement of the above scheme, the sealing door edge is detachably provided with a first sealing strip.

[0008] As an improvement of the above scheme, a collecting frame is arranged in the lower part of the cabinet body for collecting condensed water generated after steam condensation, a clamping plate is fixedly connected to the bottom of the collecting frame, a clamping groove matched with the clamping plate is formed in the bottom of the cabinet body, a drain pipe is connected to and communicated with the bottom of the collecting frame, and a water outlet valve is installed on the drain pipe.

[0009] As an improvement of the above scheme, a ventilation groove is formed in the side of the cabinet body away from the PLC control panel, a guide plate is arranged beside the ventilation groove, a clamping ball is arranged on the guide plate, the clamping ball is connected with the guide plate through a spring, a sealing plate is slidably arranged on the guide plate for sealing the ventilation groove, a clamping hole matched with the clamping ball is formed in the surface of the sealing plate, and a handle is arranged on the surface of the sealing plate.

[0010] As an improvement of the above scheme, a second sealing strip is embedded in the ventilation groove.

[0011] As an improvement of the above scheme, a filter screen is arranged in the ventilation groove.

[0012] As an improvement of the above scheme, a prompt belt is arranged at the top end of the gas release pipe.

[0013] As an improvement of the above scheme, an anti-slip sleeve is arranged on the surface of the rotary disc.

[0014] As an improvement of the above scheme, a protective sleeve is arranged on the surface of the handle.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] 1、The device adopts pressure sensor and PLC control panel to monitor and adjust the pressure in the cabinet in real time, and the PLC control panel calculates the opening degree of the electronic regulating valve that needs to be adjusted according to the preset temperature and pressure value through algorithm, so that the electronic regulating valve can accurately control the pressure in the cabinet, ensure that the pressure always remains in the set range, ensure the stability of the temperature and pressure in the cabinet, and thus ensure the energy saving, efficiency and reliability of the sterilization process.

[0017] 2、By setting the collecting frame in the lower part of the cabinet body, the condensed water generated during the sterilization process can be effectively collected, preventing water accumulation from affecting the sterilization effect and the normal operation of the equipment, and the collecting frame is detachably installed, which not only facilitates installation and disassembly, but also facilitates taking out the collecting frame for cleaning, and ensures the stability of the collecting frame during use, preventing the collecting frame from loosening or falling off due to vibration or other factors.

[0018] 3、Through the design of the ventilation slot on the side of the cabinet body, effective ventilation and heat dissipation before and after sterilization are facilitated, the comfort and safety of the environment in the cabinet are maintained, and a sealing plate is added to the ventilation slot to realize flexible opening and closing of the ventilation slot, ensuring the sealing property of the sterilization cabinet during use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the utility model.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the utility model.

[0025] Label name in the figure: 1: cabinet body, 2: sealing door, 3: screw rod, 4: rotary disc, 5: placing rack, 6: key, 7: PLC control panel, 8: pressure sensor, 9: air release pipe, 10: electronic regulating valve, 11: first sealing strip, 12: collection frame, 13: clamping plate, 14: drain pipe, 15: water outlet valve, 16: guide plate, 17: clamping ball, 18: spring, 19: sealing plate, 20: handle, 21: second sealing strip, 22: filter screen, 23: prompt belt, 24: anti-skid sleeve, 25: protective sleeve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment 1: please refer to Figures 1-3The utility model provides a pressure -adjustable pure steam sterilization cabinet, including cabinet 1, sealing door 2 and door lock subassembly, the front side of cabinet 1 is hinged sealing door 2, and the edge of sealing door 2 is detachably provided with first sealing strip 11, which enhances the sealing property of sealing door 2, effectively prevents steam leakage, and guarantees the safety and effectiveness of the sterilization process, and the door lock subassembly is installed on sealing door 2, which is composed of lead screw 3 and rotary disc 4, wherein the lead screw 3 is screw mounted on sealing door 2, one end is screw connected with cabinet 1 after passing through sealing door 2, realizes locking function, the other end extends out sealing door 2 and is fixedly connected with rotary disc 4, and the operator rotates lead screw 3, the rotary disc 4 surface is provided with antiskid sleeve 24, the antiskid sleeve 24 increases the friction of rotary disc 4 surface, so that the operator is more labor-saving and stable when rotating rotary disc 4, the cabinet 1 is equipped with rack 5 for placing sterilized articles, the side of cabinet 1 is installed with key 6 to start or close the whole sterilization cabinet, the PLC control panel 7 is configured beside key 6, which is convenient for users to operate and parameter setting, the pressure sensor 8 is installed on the top of cabinet 1 for real-time monitoring of the pressure in the cabinet, and the pressure sensor 8 is electrically connected with PLC control panel 7, the cabinet 1 top middle position is equipped with a gas release pipe 9 that is communicated with the inside of cabinet 1, the top of gas release pipe 9 is provided with prompt belt 23 for indicating the state of gas release pipe 9, when gas release pipe 9 is opened, prompt belt 23 floats randomly, and the operator can more easily judge whether gas release pipe 9 has been opened, reduce the possibility of misjudgment, the gas release pipe 9 is equipped with electronic regulating valve 10, and the valve is electrically connected with PLC control panel 7 and is controlled by PLC control panel 7, can automatically adjust the opening degree according to the need, to reach the purpose of accurately controlling the pressure in the cabinet.

[0028] When the device is in use, the items that need to be sterilized are placed on the shelf 5 in the sterilization cabinet, the sealing door 2 is closed, and the sealing door 2 is tightly closed through the door lock assembly. Then the sterilization cabinet is started through the side key 6. The sterilization cabinet is preheated first, the temperature in the cabinet gradually rises, and the subsequent steam sterilization is prepared. When the temperature in the cabinet reaches the set value, high-temperature and high-pressure pure steam is automatically injected into the inside of the cabinet body 1. In this process, the pressure sensor 8 continuously monitors the pressure change in the cabinet and feeds back the data to the PLC control panel 7. The PLC control panel 7 calculates the valve opening degree that needs to be adjusted according to the preset pressure value and the actually detected pressure value. Then the electronic regulating valve 10 adjusts the opening and closing degree according to the instruction of the PLC control panel 7. If the pressure in the cabinet exceeds the preset value, the electronic regulating valve 10 will be appropriately opened to release part of the steam and reduce the pressure. If the pressure in the cabinet is lower than the preset value, the electronic regulating valve 10 will be closed or the opening degree will be reduced to reduce the discharge of steam and make the pressure rise. Through continuous monitoring and adjustment, the electronic regulating valve 10 can keep the pressure in the cabinet within a stable range to ensure the effectiveness and safety of the sterilization process. Under the management of the PLC control panel 7, the temperature and pressure conditions in the cabinet are maintained to ensure sufficient sterilization time to completely kill the microorganisms on the items. After sterilization is completed, the PLC control panel 7 controls the electronic regulating valve 10 to gradually open to completely release the steam in the cabinet and reduce the pressure in the cabinet to a safe level. At the same time, the temperature in the cabinet will also naturally decrease with the decrease of the pressure until the temperature reaches a level that is safe for opening the sealing door 2. When all indicators return to the safe range, the power can be turned off and the sealing door 2 can be manually opened to take out the sterilized items, and the entire sterilization process is completed.

[0029] Based on example 1, please refer to Figure 4 , the lower part of the cabinet body 1 is provided with a collection frame 12 for collecting condensed water generated after steam condensation. The bottom of the collection frame 12 is fixedly connected with a clamping plate 13, and the bottom of the cabinet body 1 is provided with a clamping groove matched with the clamping plate 13. The clamping plate 13 is clamped into the clamping groove to realize detachable installation of the collection frame 12. This way not only facilitates installation and disassembly, but also ensures the stability of the collection frame 12 during use, preventing the collection frame 12 from loosening or falling off due to vibration or other factors. The bottom of the collection frame 12 is connected and communicated with a drain pipe 14, and the drain pipe 14 is provided with a water outlet valve 15.

[0030] During the sterilization process, part of the steam will condense into water on the inner wall of the cabinet body 1 and other surfaces. The condensed water will flow along the inner wall of the cabinet body 1 to the bottom and finally flow into the collection frame 12 arranged in the lower part of the cabinet body 1 for collection, preventing accumulated water from affecting the sterilization effect and the normal operation of the equipment. After the sterilization process is completed, the condensed water in the collection frame 12 can be discharged by opening the water outlet valve 15.

[0031] And the collection frame 12 is split structure with the bottom of the whole cabinet 1, the accidental dropping stains in the sterilization process also fall into the collection frame 12, and the detachable split structure is more convenient for the user to take out the collection frame 12 for cleaning, so that the stains are prevented from dropping on the bottom of the cabinet 1, and the situation that the bottom of the cabinet 1 is difficult to clean due to the block of the placing rack 5 is avoided.

[0032] Please refer to Figure 5 and Figure 6 , the cabinet 1 is provided with a ventilation slot on the side away from the PLC control panel 7, a guide plate 16 is arranged beside the ventilation slot, two groups of clamping balls 17 are arranged on the guide plate 16, the clamping balls 17 are connected with the guide plate 16 through springs 18, the clamping ball 17 and the spring 18 form a structure similar to a ball head plunger, a sealing plate 19 is slidably arranged on the guide plate 16 and used for sealing the ventilation slot, a clamping hole matched with the clamping ball 17 is formed in the surface of the contact part of the sealing plate 19 and the guide plate 16, the two groups of clamping balls 17 are clamped into the clamping holes respectively, so that the sealing plate 19 can be fixed in the two positions of opening and closing, a handle 20 is arranged on the surface of the sealing plate 19, a protective sleeve 25 is sleeved on the surface of the handle 20, the protective sleeve 25 increases the comfort and friction of the handle 20, so that the operator is more comfortable and stable when pulling or pushing the handle 20, a second sealing strip 21 is embedded in the ventilation slot and used for enhancing the sealing effect of the sealing plate 19, and a filter screen 22 is arranged in the ventilation slot and used for filtering the air entering the ventilation slot to prevent impurities from entering the cabinet.

[0033] After the sterilization cabinet is used, the operator pulls the sealing plate 19 through the handle 20, so that the sealing plate 19 slides upward along the guide plate 16, when the clamping hole is aligned with the clamping ball 17 on the upper side of the guide plate 16, the upper clamping ball 17 is clamped into the clamping hole on the outer surface of the sealing plate 19 under the action of the spring 18, so that the sealing plate 19 is fixed in the open position, at this time, the ventilation slot is opened, the air can enter or exit the cabinet through the ventilation slot, and heat dissipation and ventilation are facilitated, when the sterilization cabinet needs to be used subsequently, the operator pushes the sealing plate 19 through the handle 20, so that the sealing plate 19 slides downward along the guide plate 16, when the clamping hole is aligned with the clamping ball 17 on the lower side of the guide plate 16, the lower clamping ball 17 is clamped into the clamping hole, so that the sealing plate 19 is fixed in the closed position, the sealing plate 19 closes the ventilation slot, and the second sealing strip 21 further enhances the sealing effect to prevent air leakage.

[0034] The above embodiment is only a preferred embodiment of the present application, and is not used to limit the application scope of the present application, so that equivalent changes made according to the content described in the present application claims should be included in the present application claim scope.

Claims

1. An adjustable pressure saturated steam sterilizer cabinet comprising a cabinet body (1), a sealing door (2) and a door lock assembly, the front side of the cabinet body (1) is hinged with the sealing door (2), and the door lock assembly is installed on the sealing door (2), which is composed of a lead screw (3) and a rotary disc (4), wherein, Screw rod (3) is installed on the sealing door (2) with a thread, one end is connected with the cabinet (1) through the sealing door (2), the other end is fixed with the rotating disc (4) and extends out of the sealing door (2), the cabinet (1) is provided with a rack (5), the side of the cabinet (1) is provided with a key (6), characterized by: the key (6) is provided with a PLC control panel (7) beside, the top of the cabinet (1) is provided with a pressure sensor (8), the middle position of the top of the cabinet (1) is provided with a bleeder pipe (9), the bleeder pipe (9) is provided with an electronic regulating valve (10), the pressure sensor (8) and the electronic regulating valve (10) are electrically connected with the PLC control panel (7).

2. A pressure adjustable pure steam sterilizing cabinet according to claim 1, characterized in that: The sealing door (2) is provided with a first sealing strip (11) beside the edge.

3. A pressure adjustable pure steam sterilizing cabinet according to claim 2, characterized in that: The lower part of the cabinet (1) is provided with a collecting frame (12) for collecting condensed water generated by steam condensation, the bottom of the collecting frame (12) is fixedly connected with a clamping plate (13), the bottom of the cabinet (1) is provided with a clamping groove matched with the clamping plate (13), the bottom of the collecting frame (12) is connected and communicated with a drain pipe (14), and the drain pipe (14) is provided with a water outlet valve (15).

4. A pressure adjustable pure steam sterilizing cabinet according to claim 3, characterized in that: The side of the cabinet (1) away from the PLC control panel (7) is provided with a ventilation groove, the side of the ventilation groove is provided with a guide plate (16), the guide plate (16) is provided with a clamping ball (17), the clamping ball (17) is connected with the guide plate (16) through a spring (18), the guide plate (16) is provided with a sealing plate (19) slidingly, which is used for sealing the ventilation groove, the surface of the sealing plate (19) is provided with a clamping hole matched with the clamping ball (17), and the surface of the sealing plate (19) is provided with a handle (20).

5. A pressure adjustable pure steam sterilizing cabinet according to claim 4, characterized in that: The ventilation groove is embedded with a second sealing strip (21).

6. A pressure adjustable pure steam sterilizing cabinet according to claim 5, characterized in that: The ventilation groove is provided with a filter screen (22).

7. A pressure adjustable pure steam sterilizer according to claim 6, characterized in that: The top end of the bleeder pipe (9) is provided with a prompt belt (23).

8. A pressure adjustable pure steam sterilizer according to claim 7, characterized in that: The surface of the handle (20) is provided with a protective sleeve (25).

9. A pressure adjustable pure steam sterilizer according to claim 8, characterized in that: The surface of the handle (20) is provided with a protective sleeve (25).

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