CN115200319B - Vacuumizing pump set of capillary channel in medical refrigerator and control method thereof - Google Patents

Abstract

The invention discloses a vacuum pump set of a capillary channel in a medical refrigerator and a control method thereof, and the technical scheme is characterized by comprising a pump set, a control system and vacuum pump pipes connected to two ends of the capillary channel, wherein the pump set comprises a backing pump and a Roots pump, when the capillary channel is vacuumized, the two vacuum pump pipes are used for vacuuming the capillary channel at the same time, compared with a mode of directly vacuuming one end of the capillary channel, the vacuum pump set reduces the time of evacuating and prevents tail gas at one end deviating from work from being retained, in addition, a heating component heats a heat conducting strip according to humidity data, so that water in a pressure maintaining tank body cannot form water drops or ice, the pressure maintaining tank body is prevented from losing efficacy after long-time use, and the effect of nitrogen on evaporation of the water drops and ice body is also improved by heating.

Description

Vacuumizing pump set of capillary channel in medical refrigerator and control method thereof

Technical Field

The invention relates to the field of vacuum pump sets, in particular to a vacuum pump set of a capillary channel in a medical refrigerator and a control method thereof.

Background

The medical refrigerator is used for storing medicines, biological agents, vaccines and the like, and comprises a case and a refrigerating system, wherein the refrigerating system comprises a vacuum pump set, capillary tubes and the like, and the capillary tubes are vacuumized through the vacuum pump set to prevent ice blockage and the like in the capillary tubes;

in the prior art, the capillary is vacuumized, one end of the capillary is connected with a vacuum pump generally, so that the tail gas is seriously retained in one end of the capillary, which is far away from the connection of the vacuum pump, the air in the capillary is difficult to be completely pumped out, and the moisture in the capillary still exists.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a vacuum pump set of a capillary channel in a medical refrigerator and a control method thereof, which are used for effectively removing water in the capillary tube.

In order to achieve the above purpose, the present invention provides the following technical solutions: the vacuum pump set comprises a pump set, a control system and evacuation pipes connected to two ends of the capillary channel, wherein the pump set is used for vacuumizing, a nitrogen tank is communicated with the evacuation pipes, a pressure maintaining tank body is communicated between the evacuation pipes and the pump set, a deflation port is formed in the pressure maintaining tank body, a first vacuum gauge is arranged on the pressure maintaining tank body, a pneumatic butterfly valve is arranged between the pressure maintaining tank body and the pump set, and the two pressure maintaining tank bodies are mutually communicated;

the control system is electrically connected with the pneumatic butterfly valve and the pump set;

the pressure maintaining tank body is fixedly connected with a plurality of heat conducting strips, the heat conducting strips are arranged in a vertically staggered mode, the heat conducting strips extend out of the pressure maintaining tank body and are connected with a heating assembly, and the heating assembly is electrically connected with the control system;

the detection components are arranged in the vacuumizing pipes and comprise humidity detectors, and the humidity detectors are electrically connected with the control system;

the control system comprises a control module and a receiving module, wherein the receiving module receives the humidity information of the humidity detector in real time and controls the heating assembly to heat the heat conducting strip at the temperature corresponding to the humidity information.

As a further improvement of the invention, the heat conducting strip is wavy, one end of the heat conducting strip, which is positioned in the pressure maintaining tank body, is fixedly connected with a water absorbing resin ball, and a distance measuring component is arranged in the pressure maintaining tank body and is used for detecting the position height of the water absorbing resin ball in real time.

As a further improvement of the invention, a transverse plate is fixedly connected in the pressure maintaining tank body, the transverse plate is attached to the inner side surface of the pressure maintaining tank body, a diversion hole is formed in the transverse plate to form an air flow channel, the air flow channel is S-shaped, the transverse plate corresponds to the heat conducting strip and is positioned above the corresponding heat conducting strip, the water-absorbent resin ball is positioned under the corresponding diversion hole, and the distance measuring assembly comprises a plurality of infrared distance measuring devices which are fixedly connected to the transverse plate positioned under the water-absorbent resin ball.

As a further improvement of the invention, the diversion holes are arc-shaped, and the circle centers of the diversion holes are coincident with the circle centers of the transverse plates.

As a further improvement of the invention, the receiving module is internally preset with a discontinuous height, the receiving module receives the height information of the water-absorbent resin balls, and if the height information is higher than the corresponding discontinuous height, the heating assembly heats the corresponding heat conducting strips at intervals in unit interval time.

As a further improvement of the present invention, the receiving module includes a compensating unit that compensates for a missing height difference due to displacement of the water absorbent resin balls in the lateral direction caused by bending of the heat conductive strips, based on the height information.

As a further improvement of the invention, the evacuation pipes are fixedly connected with heating pipes, the heating pipes are spiral and respectively sleeved at two ends of the capillary channel, and the heating pipes are electrically connected with the heating assembly.

As a further improvement of the invention, the back of the refrigerator is provided with a sampling assembly for acquiring a bacterial sample in the refrigerator.

As a further improvement of the invention, the sampling component comprises a connecting pipe and cotton balls, wherein the two ends of the connecting pipe are respectively provided with a first valve, a disc is detachably connected to the connecting pipe, a guide pipe is fixedly connected to the disc, a liquid inlet is formed in the disc, a rubber buckle is sealed on the liquid inlet, the liquid inlet is communicated with the guide pipe, the guide pipe stretches into the connecting pipe, the cotton balls are fixedly connected with the end parts of the guide pipe, a plurality of cotton slivers are integrally formed on the outer side surfaces of the cotton balls, the cotton slivers are in a spiral shape and uniformly distributed on the outer side surfaces of the cotton balls, a fixing hole is formed in the connecting pipe, a rubber bag is fixedly connected to the fixing hole, the rubber bag corresponds to the cotton balls, a sealing bottle is placed in the rubber bag, an inner thread is formed at the top of the sealing bottle, the disc is positioned in the connecting pipe and is provided with an outer thread, and the inner thread is matched with the outer thread.

As a further improvement of the invention, the cotton sliver is internally provided with the aluminum wires, two cotton slivers are in a group to form a double spiral shape, a plurality of equally-spaced plastic pipes are arranged between the two cotton slivers in the same group, a plurality of through holes are uniformly distributed on the plastic pipes, filter paper coated with culture solution is wound on the plastic pipes, and the filter paper passes through the plurality of through holes.

The control method of the vacuum pump set of the capillary channel in the medical refrigerator comprises the vacuum pump set of the capillary channel in the medical refrigerator, wherein a second vacuum gauge is arranged between the vacuum pump and the pneumatic butterfly valve;

and (3) evacuating: starting a pump set, and opening a pneumatic butterfly valve and a heating assembly;

the circulation steps are as follows: closing the pneumatic butterfly valve and the pump group, opening a second valve on the nitrogen tank, closing the pump group and the second valve after introducing nitrogen, and executing the evacuation step;

pressure maintaining: the first vacuum gauge and the second vacuum gauge data are compared every other unit time.

The invention has the beneficial effects that: when the capillary channel is vacuumized, the capillary channel is vacuumized through the two evacuation pipes, compared with a mode of directly evacuating one end of the capillary channel, the evacuation time is reduced, tail gas at one end deviating from the work is prevented from being detained, the heating component can heat the heat conducting strip according to the humidity data, so that water in the pressure maintaining tank body cannot form water drops or freeze, the pressure maintaining tank body is prevented from losing efficacy after long-time use, and the effect of nitrogen on evaporation of the water drops and the ice body is improved by heating.

Drawings

FIG. 1 is a schematic diagram of the front view of the present invention;

FIG. 2 is a block diagram of the structure of the present invention;

FIG. 3 is a schematic diagram of a sampling assembly according to the present invention;

FIG. 4 is a schematic view of the structure of the pressure maintaining tank in the present invention;

FIG. 5 is a schematic view of the structure of the cotton sliver of the present invention;

FIG. 6 is a cross-sectional view of a sampling assembly of the present invention;

fig. 7 is a schematic view of the structure in the pressure maintaining tank body in the present invention.

Reference numerals: 1. a pump group; 11. roots pump; 12. a backing pump; 2. a control system; 3. an evacuation tube; 4. a nitrogen tank; 5. a pressure maintaining tank body; 51. a vent port; 52. a first vacuum gauge; 53. a heat conducting strip; 531. a water-absorbing resin ball; 54. a ranging assembly; 55. a cross plate; 551. a deflector aperture; 6. pneumatic butterfly valve; 7. a sampling assembly; 71. a connecting pipe; 711. a disc; 712. a conduit; 713. a rubber buckle; 72. cotton balls; 721. a cotton sliver; 722. a plastic tube; 723. a through hole; 724. a filter paper; 73. a first valve; 74. a fixing hole; 75. a rubber bag; 76. the bottle was sealed.

Detailed Description

The invention will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 7, a vacuum pump set for a capillary channel in a medical refrigerator according to this embodiment includes a pump set 1, a control system 2, and an evacuation tube 3 connected to two ends of the capillary channel, where the pump set 1 includes a roots pump 11 and a backing pump 12, the evacuation tube 3 is connected to a nitrogen tank 4, the nitrogen tank 4 is filled with nitrogen, a second valve is connected between the nitrogen tank 4 and the evacuation tube 3, a pressure-maintaining tank 5 is connected between the evacuation tube 3 and the pump set 1, a deflation port 51 is provided on the pressure-maintaining tank 5, a third valve is provided on the deflation port 51, the opening and closing of the pressure-maintaining tank 5 is controlled by opening the third valve, when the third valve is opened, the pressure-maintaining tank 5 is connected with the outside air, the second valve and the third valve are electrically connected with the control system 2, the opening and closing of the second valve and the third valve are controlled by the control system 2, a first vacuum gauge 52 is provided on the pressure-maintaining tank 5, the first vacuum gauge 52 is used for detecting the vacuum degree in the pressure-maintaining tank 5 in real time, in the pressure-maintaining operation, and by comparing the first vacuum gauge 52 with the second vacuum gauge to detect whether a leak exists between the capillary channel and the butterfly valve 5 and the butterfly valve 11, and the pressure-maintaining tank 5 is connected with the air pump 11;

the control system 2 is electrically connected with the pneumatic butterfly valve 6 and the pump set 1;

when the capillary channel is vacuumized, the two evacuation pipes 3 are used for vacuumizing the capillary channel at the same time, so that compared with a mode of directly evacuating one end of the capillary channel, the evacuation time is reduced, and the tail gas at one end deviating from the work is prevented from being detained; the process of vacuumizing the capillary channel is completed before the capillary channel is not installed, the capillary channel is installed after the vacuumizing process is completed, and bacteria detection is required to be performed on the refrigerator body after the refrigerator is assembled;

the back of the refrigerator is provided with a sampling assembly 7, and the sampling assembly 7 is used for acquiring a bacterial sample in the refrigerator; the detection personnel can be made to carry out the work such as ingredient detection to the bacterium sample, whether harmful bacteria exist in the freezer or in this freezer, what kind of bacteria exist's possibility is great, can formulate different treatment schemes through different bacteria.

Referring to fig. 3 and 6, the sampling assembly 7 comprises a connecting pipe 71 and a cotton ball 72, two sampling holes are formed in the back of the refrigerator, the sampling holes are communicated with the storage chamber, two ends of the connecting pipe 71 are respectively communicated with the corresponding sampling holes, a first valve 73 is arranged at two ends of the connecting pipe 71, during sampling, the first valve 73 is opened to enable the storage chamber of the refrigerator to be communicated with the connecting pipe 71, air in the storage chamber of the refrigerator can enter the connecting pipe 71, a disc 711 is detachably connected to the connecting pipe 71, a guide pipe 712 is fixedly connected to the disc 711, a liquid inlet is formed in the disc 711, a rubber buckle 713 is sealed on the liquid inlet, the liquid inlet is communicated with the guide pipe 712, culture liquid can be fed into the guide pipe 712 through the needle pipe and can be used for culturing bacteria, the guide pipe 712 stretches into the connecting pipe 71, the cotton ball 72 is fixedly connected with the end of the guide pipe 712, the cotton ball 72 is provided with a plurality of cotton strips 721 integrally formed on the outer side surface, the cotton strips 721 are spiral, the contact range between the cotton strips 721 and the air is increased under the condition that the distance between the cotton strips 721 and the cotton ball 72 is equal, the cotton strips 721 are uniformly distributed on the outer side surface of the cotton ball 72, after the culture solution is fed into the guide tube 712, the cotton ball 72 can absorb the culture solution and enter the cotton strips 721, the contact range between the cotton strips 721 and the air is increased, bacteria can be adsorbed on the cotton strips 721 and the cotton ball 72, and the culture solution is used for culturing, the detection is convenient, the cotton strips 721 are arranged, the detection personnel can conveniently extract samples, the connecting tube 71 is provided with a fixing hole 74, the fixing hole 74 is fixedly connected with a rubber bag 75, the rubber bag 75 corresponds to the cotton ball 72, a sealing bottle 76 is arranged in the rubber bag 75, the top of the sealing bottle 76 is provided with internal threads, the disc 711 is positioned in the connecting tube 71 and is separately provided with external threads, the internal threads are matched with the external threads, when a inspector needs to take out the cotton balls 72 and the like, the rubber bag 75 is held from the outside, so that the sealing bottle 76 is held, then the sealing bottle 76 is in threaded connection with the disc 711, at the moment, the cotton balls 72 and the like are covered by the sealing bottle 76, the disc 711 is unscrewed, the disc 711 is taken out, interference of bacteria in the outside air on the detection effect can be eliminated, in the process, the first valve 73 needs to be closed first, after the sealing bottle 76 is unscrewed by the inspector during installation, contact between the filter paper 724 and air during installation can be reduced, and when disinfection is carried out in a refrigerator, the cotton balls 72 can be taken off, the disc 711, the guide pipe 712 and the rubber buckle 713 are utilized, disinfection gas is injected into the connecting pipe 71, the refrigerator door is not required to be opened during sampling and disinfection, sampling is more accurate, and sealing and disinfection can be realized on a refrigerator refrigerating chamber.

Referring to fig. 5, an aluminum wire is embedded in a cotton sliver 721, the aluminum wire is used for shaping, the aluminum wire is disinfected, the cotton sliver 721 is formed into a group of two, a double spiral shape is formed, the double spiral shape is arranged, the fixed angles of the plastic tubes 722 are different, the possibility of contacting bacteria is higher, interference of air flow between two adjacent plastic tubes 722 can be reduced, a plurality of plastic tubes 722 distributed at equal intervals are arranged between the two cotton slivers 721 in the same group, the plastic tubes 722 can prevent the cotton sliver 721 from touching with filter paper 724, a plurality of through holes 723 are uniformly distributed on the plastic tubes 722, filter paper 724 coated with culture solution is wound on the plastic tubes 722, the filter paper 724 passes through the plurality of through holes 723, space is provided for placing the filter paper 724, positioning is also provided, dropping of the filter paper 724 can be prevented, the culture solution can be more conveniently added on the filter paper 724, the filter paper 724 can be bent and detoured, and the contact range of the filter paper 724 and the air is increased;

different culture solutions on the filter paper 724 are different from the culture solutions on the cotton sliver 721 and the cotton ball 72, different culture solutions are correspondingly configured and used for correspondingly detecting whether certain bacteria exist or not, different reagents are stored in a medical refrigerator, the requirements on the bacteria are different, the bacteria need to be detected one by one, and one culture solution can be placed on each filter paper 724;

during sampling, the culture solution is injected into the catheter 712 through a syringe; the syringe is a needle-hole syringe, and the culture solution on the filter paper 724 needs to be added in a sterile environment in advance and transferred after being sealed by the sealing bottle 76;

standing: the first valve 73 is opened and left to stand for 20 to 30 minutes; the air is sufficiently brought into contact with the cotton ball 72, the cotton sliver 721 and the filter paper 724.

Sampling: the first valve 73 is closed, the seal bottle 76 is connected to the disk 711, and the disk 711 is detached.

Referring to fig. 7, a plurality of heat conducting strips 53 are fixedly connected in the pressure maintaining tank 5, the heat conducting strips 53 are arranged in a staggered manner up and down, so that the temperature of each part in the pressure maintaining tank 5 is uniform, the heat conducting strips 53 extend out of the pressure maintaining tank 5, and are connected with a heating assembly, the heating assembly comprises an electric heater, and the heating assembly is electrically connected with the control system 2; the vacuum pump 11 is a Roots pump, when the Roots pump works, the second valve of the nitrogen tank 4 is in a closed state, at the moment, air in the capillary channel enters the pressure maintaining tank 5 through the evacuation pipe 3 and is pumped out through the pressure maintaining tank 5, when the air passes through the pressure maintaining tank 5, the heating component heats the heat conducting strip 53, whether the heating strip is heated or not is judged by detecting the humidity of the air in the evacuation pipe 3 through the humidity detector, if the humidity of the pumped air is higher, part of moisture is adsorbed on the inner side of the pressure maintaining tank 5 when the air passes through the pressure maintaining tank 5, so that the humidity in the pressure maintaining tank 5 is higher, the part of moisture is prevented from freezing in the pressure maintaining tank 5, and the failure of the pressure maintaining tank 5 after long-time use is prevented; moisture can also freeze in the capillary channels;

when the Roots pump 11 evacuates the capillary channel, the water stays on the inner wall of the pressure maintaining tank 5, and as the degree of evacuation increases, part of the water is taken away along with the air flow, and part of the water is frozen and stays on the inner wall of the pressure maintaining tank 5;

the hollow pipe 3 is internally provided with detection components, the detection components comprise a humidity detector, and the humidity detector is electrically connected with the control system 2;

the control system 2 comprises a control module and a receiving module, wherein the receiving module receives humidity information of the humidity detector in real time and controls the heating assembly to heat the heat conducting strip 53 at a temperature corresponding to the humidity information, different air humidity is used for controlling different heating temperatures of the heating strip, the larger the humidity is, the larger the heating temperature is correspondingly, but the upper limit of the heating temperature is provided, the upper limit of the temperature is between 10 and 15 ℃, if the temperature is too large, the temperature of the pressure maintaining tank body 5 is difficult to drop, and a long time is required for dropping the temperature;

and when nitrogen enters the pressure maintaining tank body 5, the proper temperature is increased, so that the capability of taking away moisture by the nitrogen can be improved, the drying in the pressure maintaining tank body 5 is ensured, the temperature in the capillary channel can be influenced by the increase of the temperature in the pressure maintaining tank body 5, and the capability of drying the nitrogen can also be improved.

Referring to fig. 7, the heat conducting strip 53 is in a wavy shape, so that the heat conducting strip 53 has a certain deformation capability, and within the same length, the contact range of the heat conducting strip 53 and air is enlarged, the air is heated more rapidly, one end of the heat conducting strip 53 in the pressure maintaining tank body 5 is fixedly connected with the water absorbing resin ball 531, on one hand, the water absorbing resin ball 531 is used for absorbing moisture in the air, the air is prevented from being absorbed by the inner wall of the pressure maintaining tank body 5, the moisture in the air can be adsorbed by the water absorbing resin ball 531, the weight of the water absorbing resin ball 531 is changed, the heat conducting strip 53 is deformed, and the temperature in the pressure maintaining tank body 5 is increased by heating the heat conducting strip 53, so that the moisture is prevented from freezing;

after the vacuumizing is completed, when the pressure maintaining operation is performed in the pressure maintaining tank body 5, the water absorbing resin balls 531 play a role in absorbing the moisture in the pressure maintaining tank body 5, and the drying in the pressure maintaining tank body 5 is ensured.

When nitrogen gas fills into the capillary channel, the atmospheric pressure in the capillary channel is greater than a standard atmospheric pressure, the water drop or the ice body vaporization evaporation in the capillary channel, along with the nitrogen gas circulation, the pneumatic butterfly valve 6 is closed at this moment, when the Roots pump vacuumizes again, the second valve is closed, the pneumatic butterfly valve 6 is opened, nitrogen gas gets into in the pressurize jar body 5, can make the moisture or the ice body circulation of partly adsorbing in the pressurize jar body 5 inner wall again, the nitrogen gas takes away the moisture in the pressurize jar body 5, if the water-absorbing resin ball 531 is unsaturated, then part moisture is adsorbed by the water-absorbing resin ball 531.

Be provided with range finding subassembly 54 in the pressurize jar body 5, range finding subassembly 54 is used for the position height of real-time detection water-absorbent resin ball 531, through detecting the position height of water-absorbent resin ball 531, can detect the content of water in the water-absorbent resin ball 531 to know whether water-absorbent resin ball 531 is saturated.

The heat conducting strip 53 is detachably connected with the pressure maintaining tank 5 in a sealing way, the water absorbing resin balls 531 can be replaced, due to the characteristics of the water absorbing resin balls 531, the water in the water absorbing resin balls 531 can be evaporated in a heating state and a vacuum state, the water absorbed by the water absorbing resin balls 531 can be subjected to evaporation treatment by the method, but the heating temperature is higher, the heating temperature can be controlled by a heating component, and the scheme needs to close a valve between the pressure maintaining tank 5 and the evacuating pipe 3.

One end of the heat conductive strip 53 located in the pressure maintaining tank 5 may be provided in a sphere shape, and the water absorbent resin is spread over the sphere shape to form a water absorbent resin sphere 531, increasing the contact range with the heat conductive strip 53.

Referring to fig. 7, a cross plate 55 is fixedly connected in the pressure maintaining tank body 5, the cross plate 55 is attached to the inner side surface of the pressure maintaining tank body 5, a diversion hole 551 is formed in the cross plate 55 to form an air flow channel, the air flow channel is in an S shape, the cross plate 55 corresponds to the heat conducting strip 53 and is located above the corresponding heat conducting strip 53, the water absorbing resin ball 531 is located right below the corresponding diversion hole 551, the contact range of flowing air and the water absorbing resin ball 531 is increased, so that moisture can be absorbed on the water absorbing resin ball 531, the distance measuring component 54 comprises a plurality of infrared distance measuring devices, the infrared distance measuring devices are fixedly connected to the cross plate 55 located below the water absorbing resin ball 531, the lowest infrared distance measuring device is fixed to the bottom of the pressure maintaining tank body 5, the position height of the water absorbing resin ball 531 is detected through the infrared distance measuring devices, the water absorbing efficiency of the water absorbing resin ball 531 can be judged through the change of the position height of the water absorbing resin ball 531, and accordingly whether the water absorbing amount in air flowing through a capillary pipeline is reduced or not is obtained.

After nitrogen is introduced, and when the Roots pump is vacuumized again, the method can be used for judging whether water still exists in the capillary channel;

referring to fig. 7, the guide hole 551 has an arc shape, the arc angle of the guide hole 551 is less than 120 degrees, the center of the guide hole 551 coincides with the center of the transverse plate 55, the air flow rate is ensured, the contact range between the air and the water-absorbent resin balls 531 is ensured, and the spherical water-absorbent resin balls 531 do not interfere with the air flow.

The receiving module is preset with intermittent height, and receives the height information of the water-absorbent resin balls 531, if the height information is higher than the corresponding intermittent height, the heating assembly heats the corresponding heat conducting strips 53 at intervals of 20 seconds, if the initial height of the water-absorbent resin balls 531 is 20 cm, the 20 cm represents the position height of the water-absorbent resin balls 531 in a non-water-absorbing state, the intermittent height is 16 cm, if the detected position height of the water-absorbent resin balls 531 is between 16 cm and 20 cm, the water in the air is not much, the heating time can be saved, the electric quantity can be saved, continuous heating is not needed, and the temperature in the pressure-maintaining tank body 5 is controlled continuously.

The receiving module includes a compensating unit compensating for a height difference value missing due to displacement of the water absorbing resin balls 531 in a lateral direction caused by bending of the heat conductive strip 53 according to the height information, since the water absorbing resin balls 531 are spherical, when the heat conductive strip 53 is deformed, the water absorbing resin balls 531 move downward in a vertical direction and also displace in a horizontal direction toward one side of the heat conductive strip 53, the displacement in the horizontal direction affects position detection data thereof in the height direction, in case that the water absorbing resin balls 531 do not absorb water, a distance from a bottom center thereof to the infrared range finder is 20 cm, if displacement occurs after water absorption, a position of the bottom center thereof deviates from the infrared range finder, and a position height detected by the infrared range finder increases, so that it is necessary to subtract the height position deviation data generated by the partial displacement;

meanwhile, considering the data deviation of the deformation of the heat conductive strip 53 caused by the downward pressure generated to the water absorbent resin balls 531 when air flows, the data can be made more accurate.

All fixedly connected with heating pipe (not shown in the figure) on the evacuation pipe 3, the heating pipe is the heliciform, overlaps respectively and locates the both ends of capillary duct for the both ends of capillary duct are heated evenly, and the heat can be through the conduction, and the conduction is to the mid portion of capillary duct, heating pipe and heating element electric connection, heating element can heat the heating pipe when heating the heat conduction strip, and heating pipe and heat conduction strip can be controlled alone.

The control method of the vacuum pump set of the capillary channel in the medical refrigerator comprises the vacuum pump set 1 of the capillary channel in the medical refrigerator, wherein a second vacuum gauge is arranged between the pump set 1 and a pneumatic butterfly valve 6, and the second vacuum gauge is arranged between the pneumatic butterfly valve 6 and a Roots pump 12;

and (3) evacuating: starting the pump group 1 and opening the pneumatic butterfly valve 6 and the heating assembly;

the circulation steps are as follows: closing the pneumatic butterfly valve 6 and the pump set 1, opening a second valve on the nitrogen tank 4, closing the pump set 1 and the second valve after introducing nitrogen, and executing the evacuation step;

pressure maintaining: the first gauge 52 is compared with the second gauge data every other unit time to confirm whether the capillary channel is leaking.

Working principle: when the vacuum pumping is performed, the first valve 73 is closed, the pneumatic butterfly valve 6 is opened, the pump set 1 works, two ends of a capillary channel are simultaneously extracted, after the extraction is completed, data of the first vacuum gauge 52 and the second vacuum gauge are observed, namely pressure maintaining is performed to observe whether leakage exists in the capillary channel, and the pressure maintaining process can be performed after nitrogen is introduced for several times and the vacuum pumping is performed;

at this time, the heating assembly heats the heat conducting strip 53 according to the humidity data, so that water in the pressure maintaining tank 5 can not form water drops or ice, part of the water can be absorbed by the water absorbing resin balls 531, part of the water can be taken away along with air flow, the heating effect can influence the elongated pipeline, the water in the elongated pipeline can be reduced to form water drops or ice, more water can be taken away, and the water absorbing resin balls 531 can ensure the drying in the pressure maintaining tank 5 during pressure maintaining;

then, vacuumizing for a plurality of times, closing the pneumatic butterfly valve 6 and the pump set 1, opening the pump set 1, enabling the second valve to be opened, enabling nitrogen to enter the slender pipeline through the vacuumizing pipe 3, enabling the nitrogen to enter the pressure maintaining tank body 5 at the moment, enabling the air pressure in the slender pipeline and the pressure maintaining tank body 5 to be larger than the standard atmospheric pressure, enabling formed water drops and ice to be re-evaporated, taking away by the nitrogen, vacuumizing again, guaranteeing drying of the capillary pipeline and the pressure maintaining tank body 5, and preventing moisture in the pressure maintaining tank body 5 from entering the capillary pipeline;

in the process of introducing nitrogen, the heating assembly still works, so that the nitrogen is heated, and the effect of the nitrogen on water drops and ice evaporation is improved.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (10)

1. The utility model provides an evacuation pump package of capillary duct in medical treatment freezer, includes pump package (1), control system (2) and connects in evacuation pipe (3) at capillary duct both ends, its characterized in that: the pump set (1) is used for vacuumizing, the vacuumizing pipe (3) is communicated with a nitrogen tank (4), a pressure maintaining tank body (5) is communicated between the vacuumizing pipe (3) and the pump set (1), a deflation port (51) is formed in the pressure maintaining tank body (5), a first vacuum gauge (52) is arranged on the pressure maintaining tank body (5), a pneumatic butterfly valve (6) is arranged between the pressure maintaining tank body (5) and the pump set (1), and the two pressure maintaining tank bodies (5) are mutually communicated;

the control system (2) is electrically connected with the pneumatic butterfly valve (6) and the pump set (1);

a plurality of heat conducting strips (53) are fixedly connected in the pressure maintaining tank body (5), the heat conducting strips (53) are arranged in a vertically staggered mode, the heat conducting strips (53) extend out of the pressure maintaining tank body (5) and are connected with a heating assembly, and the heating assembly is electrically connected with the control system (2);

the inside of the evacuating pipe (3) is provided with detection components, the detection components comprise a humidity detector, and the humidity detector is electrically connected with the control system (2);

the control system (2) comprises a control module and a receiving module, wherein the receiving module receives the humidity information of the humidity detector in real time and controls the heating assembly to heat the heat conducting strip (53) at the temperature corresponding to the humidity information.

2. The evacuation pump stack for a capillary channel in a medical refrigerator according to claim 1, wherein: the utility model discloses a pressure maintaining tank, including pressure maintaining tank body (5), heat conduction strip (53), distance measuring subassembly (54) are provided with in pressure maintaining tank body (5), heat conduction strip (53) are wavy, and heat conduction strip (53) are located one end fixedly connected with water-absorbing resin ball (531) in pressure maintaining tank body (5), distance measuring subassembly (54) are used for real-time detection water-absorbing resin ball (531) position height.

3. The evacuation pump stack for a capillary channel in a medical refrigerator according to claim 2, wherein: the utility model discloses a pressure maintaining tank body, including pressure maintaining tank body (5), pressure maintaining tank body (5) internal fixedly connected with diaphragm (55), diaphragm (55) with pressure maintaining tank body (5) medial surface laminating, water conservancy diversion hole (551) have been seted up on diaphragm (55) to form air current passageway, air current passageway is the S type, diaphragm (55) with heat conduction strip (53) correspond, and be located the top of corresponding heat conduction strip (53), water absorption resin ball (531) are located under water conservancy diversion hole (551) that corresponds, range finding subassembly (54) include a plurality of infrared range finder, infrared range finder fixed connection in be located on diaphragm (55) of water absorption resin ball (531) below.

4. A vacuum pump set for a capillary channel in a medical refrigerator according to claim 3, wherein: the receiving module is internally preset with intermittent heights, receives the height information of the water-absorbent resin balls (531), and if the height information is higher than the corresponding intermittent heights, the heating assembly heats the corresponding heat conducting strips (53) at intervals in unit interval time.

5. The evacuation pump stack for a capillary channel in a medical refrigerator according to claim 4, wherein: the receiving module includes a compensating unit compensating for a height difference missing due to displacement of the water absorbent resin balls (531) in a lateral direction caused by bending of the heat conductive strips (53) according to the height information.

6. A vacuum pump set for capillary channels in a medical refrigerator according to any one of claims 1 to 5, wherein: the evacuation pipe (3) is fixedly connected with heating pipes, the heating pipes are spiral and respectively sleeved at two ends of the capillary channel, and the heating pipes are electrically connected with the heating assembly.

7. The evacuation pump stack for a capillary channel in a medical refrigerator according to claim 1, wherein: the freezer back is provided with sampling assembly (7), sampling assembly (7) are used for obtaining the bacterium sample in the freezer.

8. The evacuation pump stack for a capillary channel in a medical refrigerator according to claim 7, wherein: the sampling component (7) comprises a connecting pipe (71) and a cotton ball (72), wherein a first valve (73) is arranged at two ends of the connecting pipe (71), a disc (711) is detachably connected to the connecting pipe (71), a guide pipe (712) is fixedly connected to the disc (711), a liquid inlet is formed in the disc (711), a rubber buckle (713) is sealed on the liquid inlet, the liquid inlet is communicated with the guide pipe (712), the guide pipe (712) stretches into the connecting pipe (71), the cotton ball (72) is fixedly connected with the end part of the guide pipe (712), cotton ball (72) lateral surface integrated into one piece has a plurality of silver (721), silver (721) are the heliciform, silver (721) evenly distributed in cotton ball (72) lateral surface, fixed orifices (74) have been seted up on connecting pipe (71), fixedly connected with rubber bag (75) on fixed orifices (74), rubber bag (75) with cotton ball (72) are corresponding, sealed bottle (76) have been placed in rubber bag (75), the internal thread has been seted up at sealed bottle (76) top, disc (711) are located the inside external screw thread that is equipped with of separation of connecting pipe (71), the internal screw thread with external screw thread looks adaptation.

9. The evacuation pump stack for a capillary channel in a medical refrigerator according to claim 8, wherein: the cotton sliver (721) is internally provided with aluminum wires, the cotton sliver (721) is formed into a double spiral shape by taking two cotton slivers as a group, a plurality of plastic pipes (722) which are distributed at equal intervals are arranged between the two cotton slivers (721) in the same group, a plurality of through holes (723) are uniformly distributed on the plastic pipes (722), filter paper (724) coated with culture solution is wound on the plastic pipes (722), and the filter paper (724) penetrates through the plurality of through holes (723).

10. A method for controlling a vacuum pump set of a capillary channel in a medical refrigerator, comprising the vacuum pump set of a capillary channel in a medical refrigerator according to claim 8, characterized in that: a second vacuum gauge is arranged between the pump set (1) and the pneumatic butterfly valve (6);

comprises the steps of evacuating: starting the pump group (1) and opening the pneumatic butterfly valve (6) and the heating assembly;

the circulation steps are as follows: closing the pneumatic butterfly valve (6) and the pump set (1), opening a second valve on the nitrogen tank (4), closing the pump set (1) and the second valve after introducing nitrogen, and executing the evacuation step;

pressure maintaining: the first gauge (52) is compared with the second gauge data every other unit time.

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