CN113280435B

CN113280435B - Local pollution-free positive pressure isolation system

Info

Publication number: CN113280435B
Application number: CN202110619378.XA
Authority: CN
Inventors: 李光琴
Original assignee: Shandong Bosi Biotechnology Co ltd
Current assignee: Shandong Bosi Biotechnology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-07-29
Anticipated expiration: 2041-06-03
Also published as: CN113280435A

Abstract

The invention discloses a local pollution-free positive pressure isolation system, which comprises a positive pressure ward, wherein a positive pressure adjusting device is arranged on the positive pressure ward, the positive pressure adjusting device comprises an intelligent disinfection device, an exhaust fan, a drug-resistant bacteria sterilization device, an isolation container, an automatic exhaust valve, an air exchange device and a control device, the intelligent disinfection device is fixed on the positive pressure ward and is used for automatically spraying and disinfecting the positive pressure ward, the exhaust fan is respectively connected with the positive pressure ward and the inside of the drug-resistant bacteria sterilization device through an air collection pipeline, the local pollution-free positive pressure isolation system can realize the sterile state of the isolation container before use and can not be polluted by environmental microorganisms during isolation, thereby achieving pollution-proof isolation and always maintaining the positive pressure state in the ward, and meanwhile, the intelligent disinfection device can automatically and periodically disinfect the positive pressure ward, the whole course adopts an intelligent process, so that the working efficiency is improved, and the human input is not needed.

Description

Local pollution-free positive pressure isolation system

Technical Field

The invention relates to the technical field of isolation wards, in particular to a local pollution-free positive pressure isolation system.

Background

Isolation wards are the physical measures taken to isolate other patients, thereby preventing the diffusion of pathogenic microorganisms through the air, or protecting the patient from the threat from contaminated air. Most positive pressure isolation wards use medical pipeline compressed air with adjustable pressure, cause the positive pressure of a local isolation container, avoid the backflow of external gas, avoid the pollution of external harmful microorganisms, and prevent the infection of harmful environmental microorganisms to patients.

The positive pressure ward is a ward in which the air pressure inside the ward is higher than the air pressure outside the ward under a special device, so that fresh air outside cannot flow into the ward from the air circulation, and air polluted by patients in the ward is timely discharged to a fixed place through a special passage. Thus, the places outside the ward are not polluted, thereby reducing the chance of a large amount of infection of medical staff.

The ward is kept apart to current malleation, and the cost is high, and secondary use can't guarantee itself pollution-free, can not really realize pollution-free isolation, is in ICU ward infectious disease patient like this, through the regular treatment after, because the state of an illness is critical, factors such as low immunity of itself, can often be by resistant medicine bacterium secondary infection in the ward environment for treatment success rate greatly reduced, current malleation ward need regularly carry out disinfection processing moreover, adopts the mode of manual disinfection, and is inefficient, wastes time and energy. To this end, we propose a local non-polluting positive pressure isolation system.

Disclosure of Invention

The present invention is directed to a local non-pollution positive pressure isolation system to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a local pollution-free malleation isolated system, includes the malleation ward, be provided with malleation adjusting device on the malleation ward, malleation adjusting device includes intelligent degassing unit, air exhauster, resistant medicine fungus sterilizing equipment, isolation container, air exhaust valve, breather, controlling means, intelligent degassing unit fixes on the malleation ward, and intelligent degassing unit is used for carrying out the automatic spray disinfection to the malleation ward, the air exhauster passes through the gas collecting pipeline and connects the inside of malleation ward and resistant medicine fungus sterilizing equipment respectively, resistant medicine fungus sterilizing equipment passes through gas collecting pipeline connection isolation container, automatic exhaust valve sets up on the pipeline between isolation container and breather, breather is linked together through the inside of pipeline with the malleation ward, controlling means sets up in the inside of malleation ward, and controlling means respectively with air exhauster, automatic exhaust valve, air and malleation ward's inside is linked together, controlling means sets up in the inside in the malleation ward, and controlling means respectively with air exhauster, Resistant fungus sterilizing equipment, air relief valve and breather electric connection, the bottom in malleation ward is fixed with the bottom plate, the outside of bottom plate is provided with a supporting bench, and a supporting bench and ground contact, the inside of a supporting bench is four groups of rectangle array distribution and is used for falling the buffer gear of making an uproar bradyseism to malleation adjusting device and intelligent degassing unit during operation.

Preferably, the control device comprises an air pressure sensor, and the air pressure sensor is electrically connected with the control device through a lead.

Preferably, intelligence degassing unit includes disinfectant box, feed liquor pipe, booster pump, drain pipe and drain pan, the disinfectant box sets up the inside edge department in malleation ward, the disinfectant box is linked together through the input of feed liquor pipe with the booster pump, the both ends of drain pipe communicate the output of booster pump and the top of drain pan respectively, the drain pan is fixed on the inner wall in malleation ward, the bottom of drain pan is fixed with a plurality of sprinkling mechanisms that are used for carrying out evenly spraying to the disinfectant.

Preferably, the positions where the liquid inlet pipe and the liquid outlet pipe penetrate through the positive pressure disease room are provided with rubber sealing rings.

Preferably, spraying mechanism includes spray tube and fixed cover, spray tube threaded connection is in the bottom of drain dish, fixed cover cup joints the outer wall at the spray tube, and one side integrated into one piece of fixed cover has the arc frame, the one end fixedly connected with link of fixed cover is kept away from to the arc frame, the bottom threaded connection of spray tube has the nozzle, just the top fixedly connected with shape that is located the link under the nozzle is hemispherical and sputters the piece.

Preferably, buffer gear includes fixed block, first spout, first slider and spring, the bottom at the bottom plate is fixed to the fixed block, first spout is seted up in the bottom of fixed block, and first slider sliding connection is in inside one side of first spout, a lateral wall of first slider and first spout is connected respectively at the both ends of spring, the bottom fixedly connected with holding down plate of first slider, the holding down plate is right trapezoid, and the butt has the fixed pulley on the inclined plane of one side of holding down plate, be connected with the support frame on the fixed pulley, the interior bottom fixed connection of support frame and brace table, four edge fixedly connected with telescopic links in the bottom of bottom plate, and the bottom of telescopic link and the interior bottom fixed connection of brace table.

Preferably, the bottom of the lower pressing plate is fixedly provided with a limiting block, and the vertical distance between the bottom of the limiting block and the inner bottom wall of the supporting table is ten centimeters.

Preferably, the front end fixed surface of brace table has moving mechanism, moving mechanism includes fixing base, riser, movable plate and second spout, the fixing base is fixed on the brace table, the riser sets up to two, and two riser symmetries fix in the top both sides of fixing base, two the second spout has been seted up to the relative one side of riser, the both ends fixedly connected with second slider of movable plate, second slider sliding connection is in the second spout, the top central point of movable plate puts the fixedly connected with support column, the joint has a threaded section of thick bamboo on the support column, threaded section of thick bamboo female connection has the threaded rod, the threaded rod is vertical setting, the bottom transmission of threaded rod is connected with and is used for driving its drive arrangement who carries out just reversal.

Preferably, drive arrangement includes driving motor, driving gear and motor frame, driving motor passes through the motor frame to be fixed at the top of fixing base, the driving gear is fixed on driving motor's output shaft, and one side meshing of driving gear is connected with driven gear, driven gear's centre bore internal fixation has the pivot, the one end welding of pivot has the worm, and the other end of pivot passes through the bearing and is connected with one side rotation of riser, one side meshing of worm is connected with the worm wheel, and the other end axostylus axostyle of worm wheel passes through the bearing and is connected with one side rotation of another riser, the threaded rod is fixed in the centre bore of worm wheel.

Preferably, a base plate is fixed to the top of the standing plate, and anti-skid grains which are uniformly distributed are formed in the top surface of the base plate.

Compared with the prior art, the invention has the beneficial effects that:

the invention arranges a positive pressure adjusting device in a closed positive pressure ward, circularly pumps air in the ward into a drug-resistant bacteria sterilizing device through an exhaust fan, processes the air containing drug-resistant bacteria in the ward by the drug-resistant bacteria sterilizing device to obtain medical fresh pollution-free compressed air, then guides the medical fresh pollution-free compressed air into an isolation container with an automatic exhaust valve through an adjustable pressure reducing device, the isolation container is provided with an air interchanger communicated with the positive pressure ward, when an air pressure sensor detects that the ward pressure is higher than the external pressure, the air interchanger can be controlled by a control device to guide the medical fresh pollution-free compressed air in the isolation container into the positive pressure ward again, and the original air in the ward can be pumped into the drug-resistant bacteria sterilizing device through the air circulation and then enter the isolation container again, the system can realize the sterile state of the isolation container before use, can not polluted by environmental microorganism during isolation to reach anti-pollution isolation, and can maintain the malleation state in the ward all the time, can make the patient have the resistant fungus in the pollution-free isolation environment, avoid harmful environment microorganism's secondary infection, improve the treatment success rate, the intelligent degassing unit who sets up simultaneously can be automatic regularly to carrying out disinfection treatment in the malleation ward, whole intelligent process that adopts has improved work efficiency, need not the human input.

Drawings

FIG. 1 is a schematic diagram of the isolation system of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the intelligent disinfection device and the buffer mechanism of the present invention;

FIG. 4 is a schematic structural diagram of a moving mechanism according to the present invention;

FIG. 5 is a schematic view of a spraying mechanism according to the present invention;

FIG. 6 is an enlarged view of the area A in FIG. 3

FIG. 7 is an enlarged view of area B of FIG. 4;

FIG. 8 is a schematic structural view of a positive pressure adjusting device and an intelligent disinfection device according to the present invention

In the figure: 1-a positive pressure ward; 2-a positive pressure regulating device; 3-intelligent disinfection device; 4-a bottom plate; 5, supporting the table; 6-a buffer mechanism; 7-a moving mechanism; 8-an exhaust fan; 9-a drug-resistant bacteria sterilization device; 10-an isolation container; 11-automatic exhaust valve; 12-a ventilation device; 13-a control device; 14-a barometric pressure sensor; 15-disinfectant tank; 16-a liquid inlet pipe; 17-a booster pump; 18-a liquid outlet pipe; 19-a liquid guide disc; 20-a spraying mechanism; 21-fixing block; 22-a first runner; 23-a first slider; 24-a spring; 25-a lower press plate; 26-a support frame; 27-a fixed pulley; 28-a limiting block; 29-a telescopic rod; 30-a fixed seat; 31-a riser; 32-moving the plate; 33-a second runner; 34-a second slide; 35-a support column; 36-standing board; 37-a backing plate; 38-a threaded barrel; 39-threaded rod; 40-a drive device; 41-a spray pipe; 42-fixing the sleeve; 43-arc frame; 44-a connecting frame; 45-a nozzle; 46-sputtering block; 47-a drive motor; 48-a drive gear; 49-motor frame; 50-a driven gear; 51-a worm; 52-worm wheel.

Detailed Description

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

Referring to fig. 1-8, the present invention provides a technical solution: a local pollution-free positive pressure isolation system comprises a positive pressure ward 1, wherein a positive pressure adjusting device 2 is arranged on the positive pressure ward 1, the positive pressure adjusting device 2 comprises an intelligent disinfection device 3, an exhaust fan 8, a drug-resistant bacterium sterilization device 9, an isolation container 10, an automatic exhaust valve 11, an air interchanger 12 and a control device 13, the intelligent disinfection device 3 is fixed on the positive pressure ward 1, the intelligent disinfection device 3 is used for automatically spraying and disinfecting the positive pressure ward 1, the exhaust fan 8 is respectively connected with the interiors of the positive pressure ward 1 and the drug-resistant bacterium sterilization device 9 through a gas collection pipeline, the drug-resistant bacterium sterilization device 9 is connected with the isolation container 10 through the gas collection pipeline, the automatic exhaust valve 11 is arranged on the pipeline between the isolation container 10 and the air interchanger 12, the air interchanger 12 is communicated with the interior of the positive pressure ward 1 through a pipeline, the control device 13 is arranged in the interior of the positive pressure ward 1, and controlling means 13 respectively with air exhauster 8, resistant medicine fungus sterilizing equipment 9, air relief valve 11 and breather 12 electric connection, the bottom in malleation ward 1 is fixed with bottom plate 4, the outside of bottom plate 4 is provided with brace table 5, and brace table 5 and ground contact, the inside of brace table 5 is four groups of being used for falling the buffer gear 6 of the bradyseism of making an uproar to malleation adjusting device 2 and the during operation of intelligent degassing unit 3 in rectangular array distribution.

A positive pressure adjusting device 2 is arranged in a closed positive pressure ward 1, air in the ward is circularly pumped into a drug-resistant bacterium sterilizing device 9 through an exhaust fan 8, the drug-resistant bacterium sterilizing device 9 treats the air containing drug-resistant bacteria in the ward to obtain medical fresh pollution-free compressed air, and the medical fresh pollution-free compressed air is introduced into an isolation container 10 with an automatic exhaust valve 11 through an adjustable pressure reducing device, and the isolation container 10 is provided with an air interchanger 12 communicated with the positive pressure ward 1;

control device 13 includes air pressure sensor 14, and air pressure sensor 14 passes through wire and control device 13 electric connection, when air pressure sensor 14 detects the ward pressure and is greater than ambient pressure, can control breather 12 through control device 13 and reintroduce into malleation ward 1 with the medical fresh pollution-free compressed air in isolation container 10, at this moment original air in the ward can be taken into in resistant bacteria sterilizing equipment 9 through air cycle, the recirculation enters into isolation container 10 again, this system can realize isolation container 10 aseptic condition before using, can not be polluted by environmental microorganism during the isolation, thereby reach anti-pollution isolation, and can maintain the malleation condition in the ward all the time, can make the resistant bacteria in the patient's pollution-free isolation environment, avoid the secondary infection of harmful environmental microorganism, improve the treatment success rate.

Intelligent degassing unit 3 includes disinfectant box 15, feed liquor pipe 16, booster pump 17, drain pipe 18 and drain pan 19, disinfectant box 15 sets up the inside edge department in malleation ward 1, disinfectant box 15 is linked together through feed liquor pipe 16 and booster pump 17's input, the both ends of drain pipe 18 communicate booster pump 17's output and the top of drain pan 19 respectively, the drain pan 19 of leading is fixed on malleation ward 1's inner wall, the bottom of drain pan 19 is fixed with a plurality of sprinkler mechanisms 20 that are used for carrying out the even spraying to the disinfectant, and intelligent degassing unit 3 that sets up simultaneously can be automatic regularly to carrying out disinfection processing in the malleation ward 1, whole intelligent process that adopts has improved work efficiency, need not the human input.

Rubber sealing rings are arranged at the positions where the liquid inlet pipe 16 and the liquid outlet pipe 18 penetrate through the positive ward 1, so that the sealing effect can be realized, and gas leakage can be prevented.

Spraying mechanism 20 includes spray tube 41 and fixed

cover

42, 41 threaded connection of spray tube is in the bottom of drain pan 19, fixed cover 42 cup joints the outer wall at spray tube 41, and one side integrated into one piece of fixed cover 42 has arc frame 43, the one end fixedly connected with link 44 of fixed cover 42 is kept away from to arc frame 43, the bottom threaded connection of spray tube 41 has nozzle 45, the top fixedly connected with shape that just is located link 44 under nozzle 45 is hemispherical sputtering piece 46, has guaranteed that nozzle 45 spun antiseptic solution can be effectual through the collision of sputtering piece 46 to form vaporific spraying, improved water spraying and sprinkled evenly.

The buffer mechanism 6 comprises a fixed block 21, a first chute 22, a first slider 23 and a spring 24, the fixed block 21 is fixed at the bottom of the bottom plate 4, the first chute 22 is arranged at the bottom of the fixed block 21, the first slider 23 is connected to one side of the inside of the first chute 22 in a sliding manner, two ends of the spring 24 are respectively connected with one side wall of the first slider 23 and the first chute 22, the bottom of the first slider 23 is fixedly connected with a lower pressing plate 25, the lower pressing plate 25 is in a right trapezoid shape, a fixed pulley 27 is connected to one side inclined surface of the lower pressing plate 25 in a butt manner, a support frame 26 is connected to the fixed pulley 27, the support frame 26 is fixedly connected with the inner bottom of the support table 5, four corners at the bottom of the bottom plate 4 are fixedly connected with telescopic rods 29, the bottom of the telescopic rods 29 is fixedly connected with the inner bottom of the support table 5, and vibration generated during the work of the positive pressure adjusting device 2 and the intelligent disinfection device 3 can cause the bottom plate 4 to shake, at this moment, the fixing block 21 moves downwards, the pressing plate 25 is extruded to slide on the fixed pulley 27, the first sliding block 23 can slide in the first sliding groove 22 and extrude the spring 24, and the vibration is effectively slowed down, so that the noise generated when the positive pressure adjusting device 2 and the intelligent disinfection device 3 work is reduced.

The bottom of holding down plate 25 is fixed with stopper 28, and the vertical distance size between the bottom of stopper 28 and the interior diapire of brace table 5 is ten centimetres, blocks when can moving down holding down plate 25 through stopper 28, lets holding down plate 25 have the clearance that reciprocates.

The outer surface of the front end of the supporting table 5 is fixed with a moving mechanism 7, the moving mechanism 7 comprises a fixed seat 30, vertical plates 31, a moving plate 32 and second sliding grooves 33, the fixed seat 30 is fixed on the supporting table 5, the number of the vertical plates 31 is two, the two vertical plates 31 are symmetrically fixed on two sides of the top of the fixed seat 30, the second sliding grooves 33 are formed in one opposite sides of the two vertical plates 31, second sliding blocks 34 are fixedly connected to two ends of the moving plate 32, the second sliding blocks 34 are slidably connected in the second sliding grooves 33, a supporting column 35 is fixedly connected to the center of the top of the moving plate 32, a threaded cylinder 38 is clamped on the supporting column 35, a threaded rod 39 is in threaded connection with the threaded cylinder 38, the threaded rod 39 is vertically arranged, a driving device 40 for driving the threaded rod 39 to rotate forward and backward is in transmission connection with the bottom of the threaded rod 39, the height of the station plate 36 can be adjusted according to the height of an isolated patient through the arranged moving mechanism 7, the patient can enter the ward more easily, physical consumption during crossing is saved, and on the other hand, when the system is maintained, height adjustment can be conveniently carried out on the standing plate 36 by workers, so that the working efficiency can be effectively improved.

The driving device 40 comprises a driving motor 47, a driving gear 48 and a motor frame 49, the driving motor 47 is fixed on the top of the fixed seat 30 through the motor frame 49, the driving gear 48 is fixed on an output shaft of the driving motor 47, one side of the driving gear 48 is engaged and connected with a driven gear 50, a rotating shaft is fixed in a central hole of the driven gear 50, one end of the rotating shaft is welded with a worm 51, the other end of the rotating shaft is rotatably connected with one side of a vertical plate 31 through a bearing, one side of the worm 51 is engaged and connected with a worm gear 52, a shaft rod at the other end of the worm gear 52 is rotatably connected with one side of another vertical plate 31 through a bearing, the threaded rod 39 is fixed in the central hole of the worm gear 52, the driving gear 48 is driven to rotate through the driving motor 47, the driven gear 50 is driven to rotate when the driving gear 48 rotates, the driven gear 50 drives the worm 51 to rotate, the worm 51 drives the worm wheel 52 to rotate, and finally the worm wheel 52 drives the threaded rod 39 to rotate, so as to drive the moving plate 32 to move up and down, thereby facilitating the height adjustment of the standing plate 36.

The top of the standing plate 36 is fixed with a backing plate 37, and the top surface of the backing plate 37 is provided with anti-skidding lines which are uniformly distributed, so that the friction force during standing is improved, and the phenomenon of skidding is prevented.

The circuit control systems applied in the technical scheme are all in conventional arrangement, and are not described redundantly.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A local non-pollution positive pressure isolation system comprises a positive pressure ward (1), and is characterized in that: the positive pressure ward (1) is provided with a positive pressure adjusting device (2), the positive pressure adjusting device (2) comprises an intelligent disinfection device (3), an exhaust fan (8), a drug-resistant bacterium sterilization device (9), an isolation container (10), an automatic exhaust valve (11), an air interchanger (12) and a control device (13), the intelligent disinfection device (3) is fixed on the positive pressure ward (1), the intelligent disinfection device (3) is used for automatically spraying and disinfecting the positive pressure ward (1), the exhaust fan (8) is respectively connected with the insides of the positive pressure ward (1) and the drug-resistant bacterium sterilization device (9) through a gas collection pipeline, the drug-resistant bacterium sterilization device (9) is connected with the isolation container (10) through the gas collection pipeline, the automatic exhaust valve (11) is arranged on the pipeline between the isolation container (10) and the air interchanger (12), the air interchanger (12) is communicated with the inside of the positive pressure ward (1) through a pipeline, the control device (13) is arranged inside the positive pressure ward (1), the control device (13) is electrically connected with the exhaust fan (8), the drug-resistant bacteria sterilization device (9), the automatic exhaust valve (11) and the ventilation device (12) respectively, a bottom plate (4) is fixed at the bottom of the positive pressure ward (1), a support table (5) is arranged outside the bottom plate (4), the support table (5) is in contact with the ground, and four groups of buffer mechanisms (6) for noise reduction and shock absorption are distributed in the rectangular array inside the support table (5) when the positive pressure adjusting device (2) and the intelligent disinfection device (3) work;

The intelligent disinfection device (3) comprises a disinfection liquid box (15), a liquid inlet pipe (16), a booster pump (17), a liquid outlet pipe (18) and a liquid guide disc (19), wherein the disinfection liquid box (15) is arranged at one edge of the interior of the positive-pressure ward (1), the disinfection liquid box (15) is communicated with the input end of the booster pump (17) through the liquid inlet pipe (16), the two ends of the liquid outlet pipe (18) are respectively communicated with the output end of the booster pump (17) and the top end of the liquid guide disc (19), the liquid guide disc (19) is fixed on the inner wall of the positive-pressure ward (1), and a plurality of spraying mechanisms (20) used for uniformly spraying disinfection liquid are fixed at the bottom of the liquid guide disc (19);

spray mechanism (20) are including spray tube (41) and fixed cover (42), spray tube (41) threaded connection is in the bottom of drain dish (19), fixed cover (42) cup joint the outer wall at spray tube (41), and one side integrated into one piece of fixed cover (42) has arc frame (43), one end fixedly connected with link (44) of fixed cover (42) are kept away from to arc frame (43), the bottom threaded connection of spray tube (41) has nozzle (45), just the top fixedly connected with shape that is located link (44) under nozzle (45) is hemispherical sputtering piece (46).

2. The local non-polluting positive pressure isolation system as claimed in claim 1 wherein: the control device (13) comprises an air pressure sensor (14), and the air pressure sensor (14) is electrically connected with the control device (13) through a lead.

3. The local non-contaminating positive pressure isolation system of claim 1, wherein: rubber sealing rings are arranged at the positions where the liquid inlet pipe (16) and the liquid outlet pipe (18) penetrate through the positive pressure ward (1).

4. The local non-contaminating positive pressure isolation system of claim 1, wherein: the buffer mechanism (6) comprises a fixed block (21), a first sliding groove (22), a first sliding block (23) and a spring (24), the fixed block (21) is fixed at the bottom of the bottom plate (4), the first sliding groove (22) is arranged at the bottom of the fixed block (21), the first sliding block (23) is connected to one side of the inner part of the first sliding groove (22) in a sliding manner, two ends of the spring (24) are respectively connected with one side wall of the first sliding block (23) and one side wall of the first sliding groove (22), the bottom of the first sliding block (23) is fixedly connected with a lower pressing plate (25), the lower pressing plate (25) is in a right trapezoid shape, a fixed pulley (27) is abutted against one side inclined plane of the lower pressing plate (25), a supporting frame (26) is connected onto the fixed pulley (27), the supporting frame (26) is fixedly connected with the bottom of the supporting table (5), and telescopic rods (29) are fixedly connected with four corners at the bottom of the bottom plate (4), and the bottom of the telescopic rod (29) is fixedly connected with the inner bottom of the support table (5).

5. The local non-polluting positive pressure isolation system as claimed in claim 4 wherein: the bottom of holding down plate (25) fixed mounting has stopper (28), and the vertical distance size between the bottom of stopper (28) and the interior diapire of brace table (5) is ten centimetres.

6. The local non-contaminating positive pressure isolation system of claim 1, wherein: the front end outer surface of the supporting table (5) is fixed with a moving mechanism (7), the moving mechanism (7) comprises a fixing seat (30), vertical plates (31), a moving plate (32) and second sliding grooves (33), the fixing seat (30) is fixed on the supporting table (5), the vertical plates (31) are arranged in two numbers, the two vertical plates (31) are symmetrically fixed on two sides of the top of the fixing seat (30), the second sliding grooves (33) are formed in one opposite sides of the two vertical plates (31), a standing plate (36) is arranged at the top end of each vertical plate (31), second sliding blocks (34) are fixedly connected to two ends of each moving plate (32), the second sliding blocks (34) are slidably connected into the second sliding grooves (33), a supporting column (35) is fixedly connected to the center position of the top of each moving plate (32), and threaded cylinders (38) are clamped on the supporting columns (35), threaded cylinder (38) female connection has threaded rod (39), threaded rod (39) are vertical setting, the bottom transmission of threaded rod (39) is connected with and is used for driving its drive arrangement (40) that carries out just reversing.

7. The local non-polluting positive pressure isolation system as claimed in claim 6 wherein: drive arrangement (40) include driving motor (47), driving gear (48) and motor frame (49), driving motor (47) are fixed at the top of fixing base (30) through motor frame (49), driving gear (48) are fixed on the output shaft of driving motor (47), and one side meshing of driving gear (48) is connected with driven gear (50), the centre bore internal fixation of driven gear (50) has the pivot, the one end welding of pivot has worm (51), and the other end of pivot passes through the bearing and is connected with one side rotation of riser (31), one side meshing of worm (51) is connected with worm wheel (52), and the other end axostylus axostyle of worm wheel (52) passes through the bearing and is connected with one side rotation of another riser (31), threaded rod (39) are fixed in the centre bore of worm wheel (52).

8. The local non-contaminating positive pressure isolation system of claim 6, wherein: the top of the standing plate (36) is fixed with a backing plate (37), and the top surface of the backing plate (37) is provided with anti-skid grains which are uniformly distributed.