阅读说明：本技术 一种环氧乙烷灭菌装置传感器用气缸隔离装置 (Cylinder isolating device for sensor of ethylene oxide sterilizing device ) 是由 郑诗财 屈红波 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种环氧乙烷灭菌装置传感器用气缸隔离装置,包括外壳、数量为两个的缸体及数量为两个的固定法兰,所述缸体通过所述固定法兰固定连接于所述外壳的顶端,所述外壳的内顶壁设置有与所述缸体相对应的密封环,所述缸体内设置有气缸活塞杆,所述气缸活塞杆的顶端贯穿所述缸体并设置有传感器结构,所述气缸活塞杆的底端依次贯穿所述缸体、所述外壳及所述密封环并固定连接有底板,所述密封环和所述底板之间设置有第一密封结构。该发明利用气缸原理特性,直接在气缸两端进行改造,形成隔离仓和密封功能,避免了监测仪器与环氧乙烷的直接接触,保证了监测仪器测量精度不受环氧乙烷腐蚀影响,延长了监测仪器寿命,同时极大的简化了隔离装置机构,降低隔离装置制造成本。(The invention discloses an air cylinder isolating device for an ethylene oxide sterilizing device sensor, which comprises a shell, two cylinder bodies and two fixing flanges, wherein the cylinder bodies are fixedly connected to the top end of the shell through the fixing flanges, a sealing ring corresponding to the cylinder bodies is arranged on the inner top wall of the shell, an air cylinder piston rod is arranged in each cylinder body, the top end of each air cylinder piston rod penetrates through the corresponding cylinder body and is provided with a sensor structure, the bottom end of each air cylinder piston rod penetrates through the corresponding cylinder body, the shell and the corresponding sealing ring in sequence and is fixedly connected with a bottom plate, and a first sealing structure is arranged between each sealing ring and the corresponding bottom plate. The invention utilizes the principle characteristic of the cylinder, directly transforms two ends of the cylinder to form an isolation bin and a sealing function, avoids the direct contact between a monitoring instrument and ethylene oxide, ensures that the measurement precision of the monitoring instrument is not influenced by the corrosion of the ethylene oxide, prolongs the service life of the monitoring instrument, greatly simplifies the mechanism of an isolation device and reduces the manufacturing cost of the isolation device.)

1. The utility model provides an ethylene oxide is cylinder isolating device for sterilization apparatus sensor, includes that shell (1), quantity are cylinder body (2) and quantity are mounting flange (3) of two, its characterized in that: the cylinder body (2) is fixedly connected to the top end of the shell (1) through the fixed flange (3), the inner top wall of the shell (1) is provided with a sealing ring (7) corresponding to the cylinder body (2), a cylinder piston rod (4) is arranged in the cylinder body (2), the top end of the cylinder piston rod (4) penetrates through the cylinder body (2) and is provided with a sensor structure (6), the bottom end of the cylinder piston rod (4) penetrates through the cylinder body (2), the shell (1) and the sealing ring (7) in sequence and is fixedly connected with a bottom plate (8), a first sealing structure (9) is arranged between the sealing ring (7) and the bottom plate (8), the bottom of sealing ring (7) is provided with second seal structure (10), the inner wall of sealing ring (7) is provided with third seal structure (11), the inner wall of cylinder body (2) is provided with switch structure (12).

2. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 1, wherein: the sensor structure (6) comprises a sensor connecting part (601) and a sensor probe (602), the sensor connecting part (601) is arranged at the top end of the cylinder piston rod (4), the lower end of the surface of the cylinder piston rod (4) is provided with a through ventilation groove (5), and the sensor probe (602) is arranged in the through ventilation groove (5).

3. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 1, wherein: the first sealing structure (9) comprises a sealing plate (901), the sealing plate (901) is fixedly mounted on the top end of the bottom plate (8), a circular ring (902) is arranged on the top end of the sealing plate (901), a first sealing gasket (903) is arranged on the top end of the circular ring (902), a sealing groove (704) is formed in the bottom end of the sealing ring (7), a mounting groove (701) communicated with the sealing groove (704) is formed in the sealing ring (7), a first spring (905) is fixedly connected to the inner top wall of the mounting groove (701), and a moving ring (904) is fixedly connected to the bottom end of the first spring (905).

4. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 3, wherein: the second sealing structure (10) comprises a piston plate (1004) and two first air bags (1001) in number, the first air bags (1001) are arranged on the inner top wall of the mounting groove (701), a bottom groove (702) is formed in the bottom end of the sealing ring (7), the piston plate (1004) is arranged in the bottom groove (702), second springs (1003) which are uniformly distributed are arranged between the inner top wall of the bottom groove (702) and the piston plate (1004), and a first air bag (1001) and a first air pipe (1002) are arranged between the bottom groove (702).

5. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 4, wherein: the third sealing structure (11) comprises a second air bag (1101), an annular groove (703) is formed in the inner wall of the sealing ring (7), the second air bag (1101) is arranged in the annular groove (703), and a second air conveying pipe (1102) is arranged between the second air bag (1101) and the other first air bag (1001).

6. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 1, wherein: the switch structure (12) comprises an uplink magnetic travel switch (1201) and a downlink magnetic travel switch (1202), and the uplink magnetic travel switch (1201) and the downlink magnetic travel switch (1202) are vertically distributed on one side of the inner wall of the cylinder body (2).

7. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 3, wherein: the sealing plate (901) is in a hollow circular truncated cone shape, and the sealing plate (901) is matched with the sealing groove (704).

8. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 4, wherein: the bottom end of the piston plate (1004) is provided with a second sealing gasket (1005), the second sealing gasket (1005) is annular, and the second sealing gasket (1005) is a rubber material component.

9. The cylinder isolation device for the sensor of the ethylene oxide sterilization device according to claim 1, wherein: the heat-insulating layer (101) is arranged on the periphery of the shell (1), and the fixing flange (3) is fixedly arranged on the surface of the heat-insulating layer (101).

Technical Field

The invention belongs to the technical field of sterilizer equipment, and particularly relates to a cylinder isolation device for a sensor of an ethylene oxide sterilization device.

Background

The ethylene oxide sterilizing device is a key device of a disposable sterile medical instrument manufacturing enterprise, has special requirements on installation operation, use and management, uses ethylene oxide as a sterilizing agent, and is a broad-spectrum sterilizing agent which can kill various microorganisms including spores, tubercle bacillus, bacteria, viruses, fungi and the like at normal temperature.

In the sterilization process of an ethylene oxide sterilizer, part of monitoring instruments (such as a temperature sensor and a humidity sensor) directly contact with ethylene oxide to cause that the measured value of the sensor loses the truth, meanwhile, the ethylene oxide can corrode a measuring chip (particularly humidity sensing) of the sensor to cause that the sensor is damaged, and aiming at the phenomenon, the monitoring instruments (such as the temperature sensor and the humidity sensor) are required to be prevented from contacting with the ethylene oxide, so that the monitoring instruments are isolated from the wall body of the sterilizer at necessary stages.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the cylinder isolation device for the sensor of the ethylene oxide sterilization device, which utilizes the principle characteristics of a cylinder and directly transforms two ends of the cylinder to form an isolation bin and a sealing function, thereby avoiding the direct contact between a monitoring instrument and ethylene oxide, ensuring that the measurement precision of the monitoring instrument is not influenced by the corrosion of ethylene oxide, prolonging the service life of the monitoring instrument, greatly simplifying the mechanism of the isolation device and reducing the manufacturing cost of the isolation device.

In order to achieve the purpose, the invention provides the following technical scheme:

an air cylinder isolating device for an ethylene oxide sterilizing device sensor comprises a shell, two cylinder bodies and two fixing flanges, wherein the cylinder bodies are fixedly connected to the top end of the shell through the fixing flanges, a sealing ring corresponding to the cylinder bodies is arranged on the inner top wall of the shell, an air cylinder piston rod is arranged in each cylinder body, the top end of each air cylinder piston rod penetrates through the corresponding cylinder body and is provided with a sensor structure, the bottom end of each air cylinder piston rod sequentially penetrates through the corresponding cylinder body, the shell and the corresponding sealing ring and is fixedly connected with a bottom plate, a first sealing structure is arranged between the corresponding sealing ring and the corresponding bottom plate, a second sealing structure is arranged at the bottom end of the corresponding sealing ring, a third sealing structure is arranged on the inner wall of the corresponding sealing ring, and a switch structure is arranged on the inner wall of the corresponding cylinder body;

through above-mentioned technical scheme, during the test condition, the cylinder body passes through mounting flange to be fixed on the shell, and the sensor structure sets up on cylinder piston rod, ventilates on cylinder body upper portion, and cylinder piston rod is down, and bottom plate and sealing ring separation, switch structure carry out induction control, remove to suitable position after, expose in equipment to wearing air channel and sensor probe. The sensor probe is communicated with the inside of the equipment through the opposite ventilation groove and is in the same environment, and the test related to the requirement can be carried out; during isolation state, the cylinder body bottom is ventilated, the cylinder piston rod goes upward, the laminating is accomplished to first seal structure, can drive second seal structure and third seal structure synchronous operation simultaneously, and when sealing ring and bottom plate closely laminated, sealed operation also can be accomplished to three seal structure, will rise to keeping apart in wearing air channel and the sensor probe slave unit.

Further, the sensor structure comprises a sensor connecting part and a sensor probe, the sensor connecting part is arranged at the top end of the cylinder piston rod, the lower end of the surface of the cylinder piston rod is provided with a through ventilation groove, and the sensor probe is arranged in the through ventilation groove;

through above-mentioned technical scheme, the sensor probe with to wearing the air duct and mutually supporting, can accomplish isolation and test condition through the cooperation between cylinder body and the cylinder piston rod for it is more convenient to test, plays the effect of protection to the sensor structure simultaneously, prolongs the life of sensor structure when improving the detection precision.

Further, the first sealing structure comprises a sealing plate, the sealing plate is fixedly mounted at the top end of the bottom plate, a circular ring is arranged at the top end of the sealing plate, a first sealing gasket is arranged at the top end of the circular ring, a sealing groove is formed in the bottom end of the sealing ring, a mounting groove communicated with the sealing groove is formed in the sealing ring, a first spring is fixedly connected to the inner top wall of the mounting groove, and a moving ring is fixedly connected to the bottom end of the first spring;

through above-mentioned technical scheme, when the piston rod of the cylinder upwards removed, the bottom plate can drive the synchronous upward movement of closing plate, and the ring passes and enters into to the mounting groove behind the seal groove in, first sealed pad can earlier with remove the ring contact, first spring can the atress take place crooked, piston rod of the cylinder continuously rises, the closing plate can accomplish with the laminating of seal groove, accomplish the first sealed operation of sealing ring and bottom plate, avoid ethylene oxide to cause the damage to the sensor structure.

Further, the second sealing structure comprises a piston plate and two first air bags, the two first air bags are arranged on the inner top wall of the mounting groove, a bottom groove is formed in the bottom end of the sealing ring, the piston plate is arranged in the bottom groove, second springs are uniformly distributed between the inner top wall of the bottom groove and the piston plate, and a first air pipe is arranged between one first air bag and the bottom groove;

through above-mentioned technical scheme, when the shift ring rose, can extrude first gasbag, the inside gas of one of them first gasbag can enter into the upper end to the kerve through first gas-supply pipe, and gas promotes piston plate downstream, and the second spring atress is tensile, accomplishes the secondary sealing operation between sealing ring and the bottom plate, avoids ethylene oxide, and gas gets into to the sealing ring in from accomplishing sealing ring and bottom plate junction.

Further, the third sealing structure comprises a second air bag, an annular groove is formed in the inner wall of the sealing ring, the second air bag is arranged in the annular groove, and a second air conveying pipe is arranged between the second air bag and the other first air bag;

through above-mentioned technical scheme, at the in-process that the shift ring rises, two first gasbags all can receive the extrusion, and in another first gasbag can be through second gas-supply pipe with gas transport to the second gasbag, the inside atmospheric pressure grow of second gasbag bumps, can wrap up at cylinder piston rod surface lower extreme voluntarily, accomplishes the sealed operation of third time, further improves the effect of keeping apart.

Furthermore, the switch structure comprises an uplink magnetic travel switch and a downlink magnetic travel switch, and the uplink magnetic travel switch and the downlink magnetic travel switch are vertically distributed on one side of the inner wall of the cylinder body;

through the technical scheme, the uplink magnetic travel switch is used during isolation operation and limits the moving position of the upper end of the cylinder piston rod, and the downlink magnetic travel switch is used during test operation and limits the descending position of the cylinder piston rod.

Furthermore, the sealing plate is in a hollow round table shape, and the sealing plate is matched with the sealing groove;

through above-mentioned technical scheme, the closing plate and the seal groove cooperation of cavity round platform form are used, further strengthen the performance between bottom plate and the seal ring to improve sealed effect.

Further, a second sealing gasket is arranged at the bottom end of the piston plate, is in a circular ring shape, and is a rubber material component;

through above-mentioned technical scheme, when the piston plate moved down, the second sealed pad can contact with the top of bottom plate, strengthens the sealing performance between piston plate and the bottom plate.

Furthermore, heat insulation layers are arranged on the periphery of the shell, and the fixing flanges are fixedly arranged on the surfaces of the heat insulation layers;

through above-mentioned technical scheme, the heat preservation plays heat retaining effect to the shell, reduces the loss of energy, reduction in production cost.

In conclusion, the invention has the following beneficial effects:

1. during the test state, the cylinder body passes through mounting flange to be fixed on the shell, and the sensor structure sets up on cylinder piston rod, ventilates when cylinder body upper portion, and cylinder piston rod is down, and bottom plate and sealing ring separation, switch structure carry out induction control, remove to suitable position after, expose in equipment to wearing air channel and sensor probe. The sensor probe is communicated with the inside of the equipment through the opposite ventilation groove and is in the same environment, and the test related to the requirement can be carried out; when the isolation state is realized, the bottom of the cylinder body is ventilated, the piston rod of the air cylinder moves upwards, the ventilation groove and the sensor probe are penetrated and isolated from the interior of the equipment in an ascending mode, the principle characteristic of the air cylinder is utilized in the mode, the two ends of the air cylinder are directly transformed, the isolation bin and the sealing function are formed, the direct contact between the monitoring instrument and ethylene oxide is avoided, the measuring precision of the monitoring instrument is not affected by the corrosion of the ethylene oxide, the service life of the monitoring instrument is prolonged, meanwhile, the isolation device mechanism is greatly simplified, and the manufacturing cost of the isolation device is reduced.

2. By arranging the first sealing structure, the second sealing structure and the third sealing structure, when the piston rod of the air cylinder moves upwards, the bottom plate can drive the sealing plate to move upwards synchronously, the circular ring penetrates through the sealing groove and then enters into the mounting groove, the first sealing gasket can be firstly contacted with the moving ring, the first spring can be stressed and bent, the piston rod of the air cylinder continuously rises, the sealing plate can be attached to the sealing groove, the first sealing operation of the sealing ring and the bottom plate is completed, the sensor structure is prevented from being damaged by ethylene oxide, meanwhile, when the moving ring rises, the first air bag can be extruded, the gas in the first air bag can enter the upper end of the bottom groove through the first air pipe, the gas pushes the piston plate to move downwards, the second spring is stressed and stretched, the second sealing operation between the sealing ring and the bottom plate is completed, the ethylene oxide is avoided, and the gas enters into the sealing ring from the joint of the sealing ring and the bottom plate, in this in-process, two first gasbags all can receive the extrusion, and in another first gasbag can pass through the second gas-supply pipe with gas transport to the second gasbag, the inside atmospheric pressure grow of second gasbag bumps, can wrap up at cylinder piston rod surface lower extreme automatically, accomplishes the sealed operation of third time, further improves the effect of keeping apart.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is a schematic diagram of the structure of the device according to the present embodiment in an isolated state;

FIG. 3 is a structural diagram illustrating a test state of the apparatus according to the present embodiment;

FIG. 4 is a schematic view showing the connection of the seal ring and the seal plate of the present embodiment;

fig. 5 is a schematic connection diagram of the first seal structure, the second seal structure, and the third seal structure of the present embodiment;

FIG. 6 is a schematic view showing the connection of the seal ring and the first seal structure of the present embodiment;

fig. 7 is a schematic view of the connection of the cylinder and the switch structure of the present embodiment.

Description of reference numerals: 1. a housing; 101. a heat-insulating layer; 2. a cylinder body; 3. a fixed flange; 4. a cylinder piston rod; 5. opposite-penetrating vent grooves; 6. a sensor structure; 601. a sensor connecting portion; 602. a sensor probe; 7. a seal ring; 701. mounting grooves; 702. a bottom groove; 703. a circular groove; 704. a sealing groove; 8. a base plate; 9. a first seal structure; 901. a sealing plate; 902. a circular ring; 903. a first gasket; 904. a moving ring; 905. a first spring; 10. a second seal structure; 1001. a first air bag; 1002. a first gas delivery pipe; 1003. a second spring; 1004. a piston plate; 1005. a second gasket; 11. a third seal structure; 1101. a second air bag; 1102. a second gas delivery pipe; 12. a switch structure; 1201. an upward magnetic travel switch; 1202. a down magnetic travel switch.

Detailed Description

Example (b):

the present invention is described in further detail below with reference to figures 1-7.

An air cylinder isolating device for an ethylene oxide sterilizing device sensor comprises a shell 1, two cylinder bodies 2 and two fixing flanges 3, wherein the cylinder bodies 2 are fixedly connected to the top end of the shell 1 through the fixing flanges 3, a sealing ring 7 corresponding to the cylinder bodies 2 is arranged on the inner top wall of the shell 1, an air cylinder piston rod 4 is arranged in each cylinder body 2, the top end of each air cylinder piston rod 4 penetrates through the corresponding cylinder body 2 and is provided with a sensor structure 6, the bottom end of each air cylinder piston rod 4 sequentially penetrates through the corresponding cylinder body 2, the shell 1 and the corresponding sealing ring 7 and is fixedly connected with a bottom plate 8, a first sealing structure 9 is arranged between the corresponding sealing ring 7 and the corresponding bottom plate 8, a second sealing structure 10 is arranged at the bottom end of the corresponding sealing ring 7, a third sealing structure 11 is arranged on the inner wall of the corresponding sealing ring 7, a switch structure 12 is arranged on the inner wall of the corresponding cylinder body 2, and the cylinder bodies 2 are fixed on the shell 1 through the fixing flanges 3 in a test state, the sensor structure 6 is arranged on the cylinder piston rod 4, when the upper part of the cylinder body 2 is ventilated, the cylinder piston rod 4 moves downwards, the bottom plate 8 is separated from the sealing ring 7, the switch structure 12 is controlled in a sensing way, and after the switch structure is moved to a proper position, the through ventilation groove 5 and the sensor probe 602 are exposed in the equipment. The sensor probe 602 is communicated with the inside of the equipment through the ventilation through groove 5 and is in the same environment, and the test related to the requirement can be carried out; during isolation state, the bottom of the cylinder body 2 is ventilated, the cylinder piston rod 4 moves upwards, the first sealing structure 9 completes the fitting, and simultaneously can drive the second sealing structure 10 and the third sealing structure 11 to synchronously operate, when the sealing ring 7 and the bottom plate 8 are tightly fitted, the three sealing structures can also complete the sealing operation, and the ventilation groove 5 and the sensor probe 602 are penetrated and isolated from the interior of the equipment in a rising mode. (two detection devices are arranged on the top end of the shell 1 and are distributed diagonally to improve the accuracy of detection results) the sensor structure 6 comprises a sensor connecting part 601 and a sensor probe 602, the sensor connecting part 601 is arranged on the top end of the cylinder piston rod 4, the lower end of the surface of the cylinder piston rod 4 is provided with a through ventilation groove 5, the sensor probe 602 is arranged in the through ventilation groove 5, the sensor probe 602 and the through ventilation groove 5 are mutually matched, the isolation and test states can be completed through the matching between the cylinder body 2 and the cylinder piston rod 4, so that the test is more convenient, meanwhile, the sensor structure 6 is protected, the detection accuracy is improved, and meanwhile the service life of the sensor structure 6 is prolonged (meanwhile, the selection of the sensor structure 6 can be freely selected according to the detection aspect of specific needs, such as a pressure sensor, a temperature sensor and the like).

The first sealing structure 9 comprises a sealing plate 901, the sealing plate 901 is fixedly installed at the top end of a bottom plate 8, a circular ring 902 is arranged at the top end of the sealing plate 901, a first sealing gasket 903 is arranged at the top end of the circular ring 902, a sealing groove 704 is arranged at the bottom end of the sealing ring 7, a mounting groove 701 communicated with the sealing groove 704 is arranged inside the sealing ring 7, a first spring 905 is fixedly connected to the inner top wall of the mounting groove 701, a moving ring 904 is fixedly connected to the bottom end of the first spring 905, when the cylinder piston rod 4 moves upwards, the bottom plate 8 can drive the sealing plate 901 to move upwards synchronously, the circular ring 902 enters the mounting groove 701 after passing through the sealing groove 704, the first sealing gasket 903 can be firstly contacted with the moving ring 904, the first spring 905 can be bent under stress, the cylinder piston rod 4 continuously rises, the sealing plate 901 can be attached to the sealing groove 704, and the first sealing operation of the sealing ring 7 and the bottom plate 8 is completed, damage to the sensor structure 6 by ethylene oxide is avoided. The second sealing structure 10 includes a piston plate 1004 and two first air bags 1001, the two first air bags 1001 are all disposed on the inner top wall of the mounting groove 701, a bottom groove 702 is disposed at the bottom end of the sealing ring 7, the piston plate 1004 is disposed in the bottom groove 702, second springs 1003 which are uniformly distributed are disposed between the inner top wall of the bottom groove 702 and the piston plate 1004, a first air pipe 1002 is disposed between one first air bag 1001 and the bottom groove 702, when the moving ring 904 rises, the first air bag can be extruded, the gas inside one first air bag 1001 can enter the upper end of the bottom groove 702 through the first air pipe 1002, the piston plate 1004 is pushed by the gas to move downwards, the second springs are stressed and stretched, the second sealing operation between the sealing ring 1003 and the bottom plate 8 is completed, ethylene oxide is avoided, and the gas enters the sealing ring 7 from the joint of the sealing ring 7 and the bottom plate 8. Third seal structure 11 includes second gasbag 1101, the inner wall of sealing ring 7 is provided with ring groove 703, second gasbag 1101 is provided with in the ring groove 703, be provided with second gas-supply pipe 1102 between second gasbag 1101 and another first gasbag 1001, in the in-process that shift ring 904 rises, two first gasbags 1001 all can receive the extrusion, another first gasbag 1001 can be through second gas-supply pipe 1102 with gas transmission to second gasbag 1101 in, the inside atmospheric pressure grow of second gasbag 1101, collide, can wrap up at cylinder piston rod 4 surface lower extreme automatically, accomplish the sealed operation of third time, further improve the effect of isolation.

The switch structure 12 includes an uplink magnetic travel switch 1201 and a downlink magnetic travel switch 1202, the uplink magnetic travel switch 1201 and the downlink magnetic travel switch 1202 are vertically distributed on one side of the inner wall of the cylinder body 2, the uplink magnetic travel switch 1201 is used during isolation operation to limit the upper end moving position of the cylinder piston rod 4, and the downlink magnetic travel switch 1202 is used during test operation to limit the descending position of the cylinder piston rod 4. The sealing plate 901 is in a hollow truncated cone shape, the sealing plate 901 is matched with the sealing groove 704, and the sealing plate 901 in the hollow truncated cone shape is matched with the sealing groove 704 for use, so that the performance between the bottom plate 8 and the sealing ring 7 is further enhanced, and the sealing effect is improved. A second gasket 1005 is provided at the bottom end of the piston plate 1004, the second gasket 1005 has an annular shape, and the second gasket 1005 is made of a rubber material member, thereby enhancing the sealing performance between the piston plate 1004 and the bottom plate 8. All be provided with heat preservation 101 around shell 1, mounting flange 3 fixed mounting is in the surface of heat preservation 101.

The working principle is as follows: during the test state, cylinder body 2 passes through mounting flange 3 to be fixed on shell 1, and sensor structure 6 sets up on cylinder piston rod 4, ventilates when cylinder body 2 upper portion, and cylinder piston rod 4 descends, and bottom plate 8 and sealing ring 7 separate, and switch structure 12 carries out induction control, removes to suitable position after, exposes in the equipment to wearing air channel 5 and sensor probe 602. The sensor probe 602 is communicated with the inside of the equipment through the ventilation through groove 5 and is in the same environment, and the test related to the requirement can be carried out; in an isolation state, the bottom of the cylinder body 2 is ventilated, the cylinder piston rod 4 moves upwards, the bottom plate 8 drives the sealing plate 901 to move upwards synchronously, the ring 902 enters the mounting groove 701 after penetrating through the sealing groove 704, the first sealing gasket 903 is firstly contacted with the moving ring 904, the first spring 905 is stressed to bend, the cylinder piston rod 4 continuously rises, the sealing plate 901 can complete the joint with the sealing groove 704, the first sealing operation of the sealing ring 7 and the bottom plate 8 is completed, the sensor structure 6 is prevented from being damaged by ethylene oxide, meanwhile, when the moving ring 904 rises, the first air bag 1001 can be extruded, the gas in the first air bag 1001 can enter the upper end of the bottom groove 702 through the first air pipe 1002, the gas pushes the piston plate 1004 to move downwards, the second spring 1003 is stressed and stretched, the second sealing operation between the sealing ring 7 and the bottom plate 8 is completed, and the ethylene oxide is avoided, gaseous from accomplishing sealing ring 7 and bottom plate 8 junction entering to sealing ring 7 in, in this process, two first gasbags 1001 all can receive the extrusion, another first gasbag 1001 can be through second gas-supply pipe 1102 with gaseous transport to the second gasbag 1101 in, the inside atmospheric pressure grow of second gasbag 1101, collide, can wrap up at 4 surperficial lower extremes of cylinder piston rod automatically, accomplish the sealed operation of third time, further improve the effect of keeping apart, will rise to passing in vent groove 5 and the sensor probe 602 slave unit and keep apart.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.