CN106310416B - A kind of blood recovery system - Google Patents
A kind of blood recovery system Download PDFInfo
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- CN106310416B CN106310416B CN201610828492.2A CN201610828492A CN106310416B CN 106310416 B CN106310416 B CN 106310416B CN 201610828492 A CN201610828492 A CN 201610828492A CN 106310416 B CN106310416 B CN 106310416B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/38—Removing constituents from donor blood and storing or returning remainder to body, e.g. for transfusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/79—Filters for solid matter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/80—Suction pumps
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
Abstract
The invention discloses a kind of blood recovery systems, including：Suction tube, Negative pressure machine, blood reservior, hemofiltration device, concentration blood bag and waste fluid bag, suction tube are connect with blood reservior, and blood reservior is connect with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connect with concentration blood bag and waste fluid bag respectively；Negative pressure machine includes rotor part, shell and the dry gas sealing device with single action ring and double stationary rings, shell is equipped with the seal chamber of installation sealing device, dry gas sealing device is installed between the seal chamber of shell and rotor part, for the sealing function to shell and rotor part.The technical purpose of the present invention be to provide one kind can continue working, reliability higher carries working efficiency higher, can continue working, the size of negative pressure, the blood recovery system of the better Negative pressure machine of sealing effect can be accurately controlled.
Description
Technical field
The present invention relates to field of medical devices, more particularly to a kind of blood recovery system.
Background technology
Blood calldack can reduce the loss of patient blood, reduce the use to blood bank blood, reduce the payment for medical care of patient
With.Traumatic bleeding or intraoperative hemorrhage are collected into blood reservior by blood recovery system by Negative pressure machine, after multiple filtration,
Waste liquid, smudge cells and harmful components are diverted in waste liquid loan, are cleaned, purified and are concentrated to haemocyte with physiological saline,
Pure, concentration haemocyte is stored in blood bag, is fed back to patient.
Existing blood recovery system after prolonged use, since the reliability of Negative pressure machine is relatively low, is easy so that negative
There is efficiency decline in press, and the pumping negative pressure of Negative pressure machine slows, it is also possible to the sealing function of Negative pressure machine be caused to fail so that
Negative pressure machine can not work normally, and can not generate negative pressure, can not work normally, delay so as to cause entire blood recovery system
The recycling of blood.
Invention content
In view of the above problems, technical purpose of the invention be to provide one kind can continue working, reliability is more
Height, carry working efficiency higher, can continue working, the size of negative pressure, the better Negative pressure machine of sealing effect can be accurately controlled
Blood recovery system, this blood recovery system when being rescued to urgent patient, can relatively reliable work, to avoid because
It goes wrong and rescues or the case where failure in treatment occurs for blood recovery system.
The invention is realized by the following technical scheme：
A kind of blood recovery system, including：Suction tube, Negative pressure machine, blood reservior, hemofiltration device, concentration blood bag and waste fluid bag, inhale
Skirt is connect with blood reservior, and blood reservior is connect with Negative pressure machine, and blood reservior is connected with hemofiltration device, hemofiltration device respectively with concentration blood bag
And waste fluid bag connection；
Negative pressure machine includes that rotor part, shell and the dry gas sealing device with single action ring and double stationary rings, shell are equipped with
The seal chamber of sealing device is installed, dry gas sealing device is installed between the seal chamber of shell and rotor part, for shell
With the sealing function of rotor part.
In above-mentioned technical proposal, by equipped with single action ring, double stationary rings dry gas sealing device, enable in rotating ring
Both ends form seal clearance, and sealing gas forms air film by the both ends of the surface of rotating ring, avoids contact of the stationary ring with rotating ring so that rub
It is small to wipe power, sealing device loss is low, and sealing reliability is high.
Further, dry gas sealing device includes rotating ring and the first stationary ring and the second stationary ring set on rotating ring both sides, rotating ring
In the shaft of rotor part, the both sides of rotating ring are separately installed with the fixing sleeve being sheathed in shaft, close to negative pressure secret
The end face of the fixing sleeve of envelope intracavitary side is equipped with the inner split ring in shaft, and the end face of inner split ring is equipped with inner baffle ring, three groups
Inner split ring installation alternate with inner baffle ring, forms groove between inner split ring and inner baffle ring, wedge is equipped with close to the base angle of rotating ring in groove
Shape ring；
From the seal chamber innermost end of shell be equipped with successively outward the first spacing ring for contacting installation two-by-two, spring, outside every
Ring, outer baffle ring and the second spacing ring, outer spacer ring are mounted alternately with three groups, between outer baffle ring and the second limit interannular are equipped with outer baffle ring
Gap, three outer baffle rings are separately mounted in the groove between inner split ring and inner baffle ring, form labyrinth seal, labyrinth seal connection the
Sealing surface between one stationary ring and rotating ring forms runner one, and the second spacing ring is equipped with the first stationary ring, the first stationary ring by spring
Sealing surface and the sealing surface cooperation of rotating ring install, the cooperation of another sealing surface of rotating ring is equipped with the second stationary ring, the second stationary ring
Third spacing ring is installed by spring cooperation, third spacing ring is fixedly mounted on the inner wall of seal chamber；Shell is equipped with connection
The sealing gas port of sealing surface between first stationary ring and the second stationary ring and rotating ring.Fixing sleeve on the outside of Negative pressure machine seal chamber
End face is equipped with the bearing in shaft, and the outer end face of bearing is equipped with several heat emission holes for leading to shell exterior, and heat emission hole connects
Logical sealing surface between second stationary ring and rotating ring forms runner two.
In above-mentioned technical proposal, sealing gas is entered by sealing gas port in seal chamber, by the high speed rotation of rotating ring,
It forms air film between rotating ring and the first stationary ring and the second stationary ring to be sealed, gas is quiet by rotating ring and the first stationary ring and second
Gap between ring is entered by runner one in Negative pressure machine, and labyrinth seal can reduce sealing gas and enter Negative pressure machine
It is interior, and when the air pressure in runner one is excessively high, pushes outer baffle ring that the gap at sealing is increased, increase the flow of gas,
To reduce the gap between rotating ring and the first stationary ring, the destruction of air film is avoided；And it is formed between the second stationary ring and rotating ring
Runner two can reduce the temperature of bearing by the air-flow of runner two by the heat emission hole at bearing with the heat dissipation at bearing running
Degree, improves the reliability of Negative pressure machine；It, can be between the first stationary ring, the second stationary ring and rotating ring when the pressure in Negative pressure machine is excessive
Sealing surface can avoid medium from flowing out, and when the pressure in Negative pressure machine is excessive, and pressure squeezes outer baffle ring, so that outer gear
Gap between ring and groove becomes smaller, and prevents the flowing of air-flow, prevents from flowing backwards.
Further, the both ends of the surface of rotating ring are equipped with equally distributed screw type dynamic pressure groove, and the depth of dynamic pressure groove outer end is 6-9
The depth of micron, dynamic pressure groove inner end is 2-5 microns, and the depth of dynamic pressure groove outer end to dynamic pressure groove inner end is linear distribution；Dynamic pressure groove
Spiral angle be 15-18 °.
In above-mentioned technical proposal, by equipped with the outer end depth screw type dynamic pressure groove shallower compared with deep, inner end depth, dynamic pressure
The depth of slot outer end to dynamic pressure groove inner end is linear distribution, can increase air inflow so that be easily formed gas in the slow-speed of revolution
Film, the spiral angle of dynamic pressure groove is 15-18 ° and dynamic pressure groove is made to have longer length, can be fully pressurized to sealing gas, from
And form sealing air film.
Further, it is set in each dynamic pressure groove there are one supercharging blade, inlet incidence angle △ β=3-7 ° of the supercharging blade,
The length for being pressurized blade is dynamic pressure slot length~。
In above-mentioned technical proposal, the supercharging blade being equipped in dynamic pressure groove is pressurized vane inlet angle of attack △ β=3-7 °, can
So that in rotating ring rotation process, the supercharging blade in rotating ring can be pressurized the sealing gas flowed into so that gas stream
Into dynamic pressure groove innermost end when, with bigger pressure, to formed around dynamic pressure groove seals dam under the action of, formed it is close
Air film is sealed, the performance of sealing is improved, sealing air film is enabled to be more difficult to be destroyed.
Further, it is one in front and one in back set in each dynamic pressure groove there are two blade is pressurized, the head of second supercharging blade is set
In first be pressurized trailing edge inner arc surface side, and distance between the two be L=（w-r）, w is second supercharging blade
The width of the dynamic pressure groove of head position, r are the leading-edge radius of second supercharging leaf head.
In above-mentioned technical proposal, by the way that equipped with two supercharging blades one in front and one in back, first blade is to just entering dynamic pressure
The inlet of slot is pressurized, and second blade can further be pressurized first blade gas after supercharged, and may be used also
To being pressurized from the gas flowed into from the intrados side of first blade, the efficiency of supercharging is substantially increased, to improve
It can be more prone to form air film in the slow-speed of revolution, reduce rotating ring and stationary ring time of contact, reduce the wear extent of rotating ring and stationary ring,
And it can improve the reliability of sealing in one timing of air pressure of sealing gas, be pressurized the stability of sealing.
Further, the first stationary ring and the second stationary ring seal face are uniformly provided with several high pressures for being connected with high pressure gas respectively
Hole, pressure hole are arranged close to the inner end of dynamic pressure groove；Pressure hole on first stationary ring and the second stationary ring seal face, which is connected with, is connected with height
It calms the anger the high-pressure air pipe of body.
In above-mentioned technical proposal, by equipped with the pressure hole for being connected with high-pressure air pipe, can when starting or closing Negative pressure machine,
It is easy so that can not form air film between rotating ring and stationary ring and generate friction, to reduce dry gas seals since rotating speed is insufficient
Service life；By being equipped with when starting Negative pressure machine, preceding 3s clocks, are passed through the gas of 2-2.5Mpa on startup, to reduce by two
The abrasion of a seal face equally when closing Negative pressure machine, is passed through the gas that pressure continuously decreases, so that two sealings
Reduce abrasion in end face.
Further, the material of the first stationary ring and the second stationary ring is impregnating metal graphite, and the material of rotating ring is compound carbonizing
Tungsten, the compound carbonizing tungsten include following components by weight percent：Tungsten carbide：50-58 parts, titanium carbide：12-18 parts, titanium：13-22 parts,
Cobalt：3.5-6 part, vanadium：1.5-3.5 part, chromium carbide：1.8-4.5, binder：13-18 parts；The binder includes following weight
Component：Aluminium：3-6 parts, iron：25-30 parts, molybdenum：0.8-1.5 parts, boron：1.3-2.2 part.
Further, the compound carbonizing tungsten includes following components by weight percent：Tungsten carbide：55 parts, titanium carbide：16 parts, titanium：20
Part, cobalt：4.2 part, vanadium：2.2 parts, chromium carbide：2.3, binder：14 parts；The binder includes following components by weight percent：Aluminium：4.5
Part, iron：27 parts, molybdenum：1.2 parts, boron：1.8 part.
Further, the preparation method of compound carbonizing tungsten includes the following steps：
Step 1：Weighing components by weight percent is：Tungsten carbide：50-58 parts, titanium carbide：12-18 parts, titanium：13-22 parts, cobalt：
3.5-6 part, vanadium：1.5-3.5 part, chromium carbide：1.8-4.5, binder：13-18 parts of raw material powder, wherein each raw material powder
Diameter be less than 2 microns, grind 30-40 minutes, then raw material powder stirred 20-30 minutes in blender in the ball mill；
Step 2：Mixed raw material powder is dried in 60-75 DEG C of vacuum environment, in vacuum ring after drying
Near room temperature in border；
Step 3：Idiosome is made in raw material powder, 1310-1340 DEG C is heated in inert gas, is sintered 1.5-2 hours
Afterwards, 30 minutes are kept the temperature near 500 DEG C then by temperature, then cooled to room temperature.
Wherein, the pressure for raw material powder being pressed into idiosome is 1350-1450kg/cm2。
The beneficial effects of the invention are as follows:
1, enable to sealing effect more preferable by the double seals being equipped on rotating ring, and in the gas energy of sealing
Enough cooled down to bearing by runner two so that the service life is longer for bearing；Pass through the supercharging leaf being equipped in dynamic pressure groove
Piece enables to dry gas sealing device that can provide reliable sealing in lower rotating speed, by being pressurized blade so that close
The air-flow of envelope is influenced smaller by the atmospheric pressure fluctuation of sealing gas so that the air film of dry gas seals is more stablized so that close
It is more preferable to seal effect, improves the reliability of Negative pressure machine, the floating type labyrinth seal being equipped with can adjust the thickness of air film in time,
So that the thickness of air film is maintained at optimum range；
2, by the way that the material of rotating ring is set as compound carbonizing tungsten, the tungsten carbide and titanium carbide in this double carbide have
Enough hardness can be used for a long time so that rotating ring is not easy to be worn, and titanium can increase the intensity of rotating ring and tough
Degree so that rotating ring improves 13% or more compared with the impact strength of the prior art, and can improve its corrosion resistance, cobalt, the vanadium of addition
And titanium can reduce elasticity modulus, the binder of addition can increase the compactness extent of compound carbonizing tungsten, and after sintering can
Its internal stress is enough greatly reduced, the chromium carbide of addition can improve 15% or more wearability so that between rotating ring and stationary ring
Wear intensity is very small, meanwhile, the iron in bonding agent can also increase the toughness of compound carbonizing tungsten so that the surrender of compound carbonizing tungsten
Intensity is more than 1220Mpa, and tensile strength is not less than 1170MPa, and heat resistanceheat resistant performance significantly improves.
Description of the drawings
Fig. 1 is the structural schematic diagram of dry gas sealing device；
Fig. 2 is that there are one the structural schematic diagrams of the rotating ring of supercharging blade for band；
Fig. 3 is that there are two the structural schematic diagrams of the rotating ring of supercharging blade for band；
Fig. 4 is the structural schematic diagram of Negative pressure machine.
It is marked in figure：1 it is rotor part, 2 be shell, 3 be dry gas sealing device, 11 be the first stationary ring, 12 is second quiet
Ring, 13 be rotating ring, 14 be spring, 15 be outer baffle ring, 16 be outer spacer ring, 17 be inner baffle ring, 18 be inner split ring, 19 be cambridge ring,
20 be bearing, 21 be heat emission hole, 22 be runner one, 23 be runner two, 30 be dynamic pressure groove, 31 be supercharging blade.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment one：
Blood recovery system as shown in Figure 1, Figure 2 and shown in Fig. 4, including：Rotor part 1, shell 2, dry gas sealing device 3,
One stationary ring 11, the second stationary ring 12, rotating ring 13, spring 14, outer baffle ring 15, outer spacer ring 16, inner baffle ring 17, inner split ring 18, cambridge ring
19, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connect with blood reservior,
Blood reservior is connect with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connect with concentration blood bag and waste fluid bag respectively；
Negative pressure machine includes rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, on shell 2
Seal chamber equipped with installation sealing device, dry gas sealing device 3 are installed between the seal chamber of shell 2 and rotor part 1, are used for
To the sealing function of shell 2 and rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 set on rotating ring both sides, rotating ring 13
In the shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixing sleeve being sheathed in shaft, close to Negative pressure machine
The end face of fixing sleeve on the inside of seal chamber is equipped with the inner split ring 18 in shaft, and the end face of inner split ring 18 is equipped with inner baffle ring
17, the installation alternate with inner baffle ring 17 of three groups of inner split rings 18 forms groove between inner split ring 18 and inner baffle ring 17, close to dynamic in groove
The base angle of ring 13 is equipped with cambridge ring 19；
It is equipped with the first spacing ring for contacting installation two-by-two, spring 14, outer successively outward from the seal chamber innermost end of shell 2
Spacer ring 16, outer baffle ring 15 and the second spacing ring, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second limits
Position interannular is equipped with gap, and three outer baffle rings 15 are separately mounted in the groove between inner split ring 18 and inner baffle ring 17, forms labyrinth
Sealing, labyrinth seal are connected to the sealing surface between the first stationary ring 11 and rotating ring 13 and form runner 1, and the second spacing ring passes through bullet
Spring 14 is equipped with the first stationary ring 11, and the sealing surface of the first stationary ring 11 is installed with the sealing surface cooperation of rotating ring 13, rotating ring 13 it is another
The cooperation of one sealing surface is equipped with the second stationary ring 12, and the second stationary ring 12 is equipped with third spacing ring, third limit by the cooperation of spring 14
Position ring is fixedly mounted on the inner wall of seal chamber；Shell 2 is equipped between the first stationary ring 11 of connection and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixing sleeve on the outside of nearly Negative pressure machine seal chamber is equipped with the bearing 20 in shaft, the outer end of bearing 20
Face is equipped with several heat emission holes 21 led to outside shell 2, and heat emission hole 21 is connected to the sealing surface between the second stationary ring 12 and rotating ring 13
Form runner 2 23.
The both ends of the surface of rotating ring 13 are equipped with equally distributed screw type dynamic pressure groove 30, and the depth of 30 outer end of dynamic pressure groove is that 6-9 is micro-
Rice, preferably 7 microns, the depth of 30 inner end of dynamic pressure groove is 2-5 microns, preferably 3 microns, 30 outer end of dynamic pressure groove to dynamic pressure groove 30
The depth of inner end is linear distribution；The spiral angle of dynamic pressure groove 30 is 15-18 °, and the angle of helical angle can be 16 °, can increase
Into the pressure of the gas in dynamic pressure groove.
Blade 31, inlet incidence angle the △ β=3-7 °, 3- of the supercharging blade 31 are pressurized there are one being set in each dynamic pressure groove 30
7 ° of the angle of attack can increase acting of the blade to fluid, can be set as 4 °, the length of supercharging blade 31 is 30 length of dynamic pressure groove,
The tail portion and dynamic pressure groove inner end for being pressurized blade 31 are equipped with a certain distance, so that the gas for reaching dynamic pressure groove innermost end can have
There is larger area to form gas pressure to stationary ring.
First stationary ring 11 and 12 seal face of the second stationary ring are uniformly provided with several pressure holes for being connected with high pressure gas respectively, high
Hole is pressed to be arranged close to the inner end of dynamic pressure groove 30；Pressure hole on first stationary ring and the second stationary ring seal face, which is connected with, is connected with high pressure gas
The high-pressure air pipe of body, high-pressure air pipe are connected with the gas of -2.5Mpa, and the abrasion to reduce by two seal faces is equally being closed
When Negative pressure machine, it is passed through the gas that pressure continuously decreases, so that two seal faces reduce abrasion, high-pressure air pipe is equipped with control
The valve of air-flow processed.
The material of first stationary ring 11 and the second stationary ring 12 is impregnating metal graphite, and the material of rotating ring 13 is compound carbonizing tungsten,
The compound carbonizing tungsten includes following components by weight percent：Tungsten carbide：50 parts, titanium carbide：12 parts, titanium：13 parts, cobalt：3.5 parts, vanadium：
1.5 parts, chromium carbide：1.8, binder：13 parts；The binder includes following components by weight percent：Aluminium：3 parts, iron：25 parts, molybdenum：0.8
Part, boron：1.3 part.
The preparation method of compound carbonizing tungsten includes the following steps：
Step 1：Weighing components by weight percent is：Tungsten carbide：50 parts, titanium carbide：12 parts, titanium：13 parts, cobalt：3.5 parts, vanadium：1.5
Part, chromium carbide：1.8, binder：13 parts, the wherein diameter of each raw material powder is less than 2 microns, grinds 30-40 in the ball mill
Minute, it can be 35 minutes, then raw material powder is stirred 20-30 minutes in blender, can be 25 minutes；
Step 2：Mixed raw material powder is dried in 60-75 DEG C of vacuum environment, it can be by mixed original
Feed powder end is dried in 65 DEG C of vacuum environment, it is dry after in vacuum environment near room temperature；
Step 3：Idiosome is made in raw material powder, 1310-1340 DEG C is heated in inert gas, can be heated to 1320
DEG C, after being sintered 1.5-2 hours, sinterable 1.8 hours, then by the near 500 DEG C of heat preservations of temperature 30 minutes, then naturally cool to room
Temperature.
Wherein, the pressure for raw material powder being pressed into idiosome is 1350-1450kg/cm2。
Embodiment two：
Blood recovery system as shown in Figure 1, Figure 2 and shown in Fig. 4, including：Rotor part 1, shell 2, dry gas sealing device 3,
One stationary ring 11, the second stationary ring 12, rotating ring 13, spring 14, outer baffle ring 15, outer spacer ring 16, inner baffle ring 17, inner split ring 18, cambridge ring
19, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connect with blood reservior,
Blood reservior is connect with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connect with concentration blood bag and waste fluid bag respectively；
Negative pressure machine includes rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, on shell 2
Seal chamber equipped with installation sealing device, dry gas sealing device 3 are installed between the seal chamber of shell 2 and rotor part 1, are used for
To the sealing function of shell 2 and rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 set on rotating ring both sides, rotating ring 13
In the shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixing sleeve being sheathed in shaft, close to Negative pressure machine
The end face of fixing sleeve on the inside of seal chamber is equipped with the inner split ring 18 in shaft, and the end face of inner split ring 18 is equipped with inner baffle ring
17, the installation alternate with inner baffle ring 17 of three groups of inner split rings 18 forms groove between inner split ring 18 and inner baffle ring 17, close to dynamic in groove
The base angle of ring 13 is equipped with cambridge ring 19；
It is equipped with the first spacing ring for contacting installation two-by-two, spring 14, outer successively outward from the seal chamber innermost end of shell 2
Spacer ring 16, outer baffle ring 15 and the second spacing ring, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second limits
Position interannular is equipped with gap, and three outer baffle rings 15 are separately mounted in the groove between inner split ring 18 and inner baffle ring 17, forms labyrinth
Sealing, labyrinth seal are connected to the sealing surface between the first stationary ring 11 and rotating ring 13 and form runner 1, and the second spacing ring passes through bullet
Spring 14 is equipped with the first stationary ring 11, and the sealing surface of the first stationary ring 11 is installed with the sealing surface cooperation of rotating ring 13, rotating ring 13 it is another
The cooperation of one sealing surface is equipped with the second stationary ring 12, and the second stationary ring 12 is equipped with third spacing ring, third limit by the cooperation of spring 14
Position ring is fixedly mounted on the inner wall of seal chamber；Shell 2 is equipped between the first stationary ring 11 of connection and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixing sleeve on the outside of nearly Negative pressure machine seal chamber is equipped with the bearing 20 in shaft, the outer end of bearing 20
Face is equipped with several heat emission holes 21 led to outside shell 2, and heat emission hole 21 is connected to the sealing surface between the second stationary ring 12 and rotating ring 13
Form runner 2 23.
The both ends of the surface of rotating ring 13 are equipped with equally distributed screw type dynamic pressure groove 30, and the depth of 30 outer end of dynamic pressure groove is that 6-9 is micro-
Rice, preferably 8 microns, the depth of 30 inner end of dynamic pressure groove is 2-5 microns, preferably 4 microns, 30 outer end of dynamic pressure groove to dynamic pressure groove 30
The depth of inner end is linear distribution；The spiral angle of dynamic pressure groove 30 is 15-18 °, and the angle of helical angle can be 16 °, can increase
Into the pressure of the gas in dynamic pressure groove.
Blade 31, inlet incidence angle the △ β=3-7 °, 3- of the supercharging blade 31 are pressurized there are one being set in each dynamic pressure groove 30
7 ° of the angle of attack can increase acting of the blade to fluid, can be set as 4 °, the length of supercharging blade 31 is 30 length of dynamic pressure groove,
The tail portion and dynamic pressure groove inner end for being pressurized blade 31 are equipped with a certain distance, so that the gas for reaching dynamic pressure groove innermost end can have
There is larger area to form gas pressure to stationary ring.
First stationary ring 11 and 12 seal face of the second stationary ring are uniformly provided with several pressure holes for being connected with high pressure gas respectively, high
Hole is pressed to be arranged close to the inner end of dynamic pressure groove 30；Pressure hole on first stationary ring and the second stationary ring seal face, which is connected with, is connected with high pressure gas
The high-pressure air pipe of body, high-pressure air pipe are connected with the gas of 2.5Mpa, and the abrasion to reduce by two seal faces is equally being closed
When Negative pressure machine, it is passed through the gas that pressure continuously decreases, so that two seal faces reduce abrasion, high-pressure air pipe is equipped with control
The valve of air-flow processed.
The material of first stationary ring 11 and the second stationary ring 12 is impregnating metal graphite, and the material of rotating ring 13 is compound carbonizing tungsten,
The compound carbonizing tungsten includes following components by weight percent：Tungsten carbide：58 parts, titanium carbide：18 parts, titanium：22 parts, cobalt：6 parts, vanadium：3.5
Part, chromium carbide：4.5, binder：18 parts；The binder includes following components by weight percent：Aluminium：6 parts, iron：30 parts, molybdenum：1.5 parts,
Boron：2.2 part.
The preparation method of compound carbonizing tungsten includes the following steps：
Step 1：Weighing components by weight percent is：Tungsten carbide：58 parts, titanium carbide：18 parts, titanium：22 parts, cobalt：6 parts, vanadium：3.5
Part, binder：18 parts, chromium carbide：4.5, binder：13 parts, the wherein diameter of each raw material powder is less than 2 microns, in ball milling
It is ground 37 minutes in machine, then raw material powder is stirred 28 minutes in blender；
Step 2：Mixed raw material powder is dried in 75 DEG C of vacuum environment, in vacuum environment after drying
In near room temperature；
Step 3：Idiosome is made in raw material powder, 1310-1340 DEG C is heated in inert gas, is sintered 1.5-2 hours
Afterwards, 30 minutes are kept the temperature near 500 DEG C then by temperature, then cooled to room temperature.
Wherein, the pressure for raw material powder being pressed into idiosome is 1350-1450kg/cm2。
Embodiment three：
Such as Fig. 1, Fig. 3 and blood recovery system shown in Fig. 4, including：Rotor part 1, shell 2, dry gas sealing device 3,
One stationary ring 11, the second stationary ring 12, rotating ring 13, spring 14, outer baffle ring 15, outer spacer ring 16, inner baffle ring 17, inner split ring 18, cambridge ring
19, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connect with blood reservior,
Blood reservior is connect with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connect with concentration blood bag and waste fluid bag respectively；
Negative pressure machine includes rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, on shell 2
Seal chamber equipped with installation sealing device, dry gas sealing device 3 are installed between the seal chamber of shell 2 and rotor part 1, are used for
To the sealing function of shell 2 and rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 set on rotating ring both sides, rotating ring 13
In the shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixing sleeve being sheathed in shaft, close to Negative pressure machine
The end face of fixing sleeve on the inside of seal chamber is equipped with the inner split ring 18 in shaft, and the end face of inner split ring 18 is equipped with inner baffle ring
17, the installation alternate with inner baffle ring 17 of three groups of inner split rings 18 forms groove between inner split ring 18 and inner baffle ring 17, close to dynamic in groove
The base angle of ring 13 is equipped with cambridge ring 19；
It is equipped with the first spacing ring for contacting installation two-by-two, spring 14, outer successively outward from the seal chamber innermost end of shell 2
Spacer ring 16, outer baffle ring 15 and the second spacing ring, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second limits
Position interannular is equipped with gap, and three outer baffle rings 15 are separately mounted in the groove between inner split ring 18 and inner baffle ring 17, forms labyrinth
Sealing, labyrinth seal are connected to the sealing surface between the first stationary ring 11 and rotating ring 13 and form runner 1, and the second spacing ring passes through bullet
Spring 14 is equipped with the first stationary ring 11, and the sealing surface of the first stationary ring 11 is installed with the sealing surface cooperation of rotating ring 13, rotating ring 13 it is another
The cooperation of one sealing surface is equipped with the second stationary ring 12, and the second stationary ring 12 is equipped with third spacing ring, third limit by the cooperation of spring 14
Position ring is fixedly mounted on the inner wall of seal chamber；Shell 2 is equipped between the first stationary ring 11 of connection and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixing sleeve on the outside of nearly Negative pressure machine seal chamber is equipped with the bearing 20 in shaft, the outer end of bearing 20
Face is equipped with several heat emission holes 21 led to outside shell 2, and heat emission hole 21 is connected to the sealing surface between the second stationary ring 12 and rotating ring 13
Form runner 2 23.
The both ends of the surface of rotating ring 13 are equipped with equally distributed screw type dynamic pressure groove 30, and the depth of 30 outer end of dynamic pressure groove is that 6-9 is micro-
Rice, preferably 6 microns, the depth of 30 inner end of dynamic pressure groove is 2-5 microns, preferably 2 microns, 30 outer end of dynamic pressure groove to dynamic pressure groove 30
The depth of inner end is linear distribution；The spiral angle of dynamic pressure groove 30 is 15-18 °, and the angle of helical angle can be 16 °, can increase
Into the pressure of the gas in dynamic pressure groove.
It is one in front and one in back set in each dynamic pressure groove 30 there are two being pressurized blade 31, the head of second supercharging blade 31 is set to the
One supercharging trailing edge inner arc surface side, and distance between the two be L=（w-r）, w is the head of second supercharging blade 31
The width of the dynamic pressure groove 30 of portion's position, r are the leading-edge radius on second 31 head of supercharging blade, can greatly improve increasing
Press mechanical efficiency of the blade to gas so that faster, gas atmosphere is more steady for gas boosting.
First stationary ring 11 and 12 seal face of the second stationary ring are uniformly provided with several pressure holes for being connected with high pressure gas respectively, high
Hole is pressed to be arranged close to the inner end of dynamic pressure groove 30；Pressure hole on first stationary ring and the second stationary ring seal face, which is connected with, is connected with high pressure gas
The high-pressure air pipe of body, high-pressure air pipe are connected with the gas of 2Mpa, equally, negative closing to reduce the abrasion of two seal faces
When press, it is passed through the gas that pressure continuously decreases, so that two seal faces reduce abrasion, high-pressure air pipe is equipped with control
The valve of air-flow.
The material of first stationary ring 11 and the second stationary ring 12 is impregnating metal graphite, and the material of rotating ring 13 is compound carbonizing tungsten,
The compound carbonizing tungsten includes following components by weight percent：Tungsten carbide：55 parts, titanium carbide：16 parts, titanium：20 parts, cobalt：4.2 parts, vanadium：
2.2 parts, chromium carbide：3.2 parts, binder：14 parts；The binder includes following components by weight percent：Aluminium：4.5 parts, iron：27 parts,
Molybdenum：1.2 parts, boron：1.8 part.
The preparation method of compound carbonizing tungsten includes the following steps：
Step 1：Weighing components by weight percent is：Tungsten carbide：55 parts, titanium carbide：16 parts, titanium：20 parts, cobalt：4.2 parts, vanadium：2.2
Part, chromium carbide：3.2 parts, binder：14 parts, the wherein diameter of each raw material powder is less than 2 microns, grinds 33 in the ball mill
Minute, then raw material powder is stirred 30 minutes in blender；
Step 2：Mixed raw material powder is dried in 75 DEG C of vacuum environment, in vacuum environment after drying
In near room temperature；
Step 3：Idiosome is made in raw material powder, 1330 DEG C are heated in inert gas, after being sintered 2 hours, then will be warm
It spends near 500 DEG C and keeps the temperature 30 minutes, then cooled to room temperature.
Wherein, the pressure for raw material powder being pressed into idiosome is 1350-1450kg/cm2。
Example IV：
Such as Fig. 1, Fig. 3 and blood recovery system shown in Fig. 4, including：Rotor part 1, shell 2, dry gas sealing device 3,
One stationary ring 11, the second stationary ring 12, rotating ring 13, spring 14, outer baffle ring 15, outer spacer ring 16, inner baffle ring 17, inner split ring 18, cambridge ring
19, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connect with blood reservior,
Blood reservior is connect with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connect with concentration blood bag and waste fluid bag respectively；
Negative pressure machine includes rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, on shell 2
Seal chamber equipped with installation sealing device, dry gas sealing device 3 are installed between the seal chamber of shell 2 and rotor part 1, are used for
To the sealing function of shell 2 and rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 set on rotating ring both sides, rotating ring 13
In the shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixing sleeve being sheathed in shaft, close to Negative pressure machine
The end face of fixing sleeve on the inside of seal chamber is equipped with the inner split ring 18 in shaft, and the end face of inner split ring 18 is equipped with inner baffle ring
17, the installation alternate with inner baffle ring 17 of three groups of inner split rings 18 forms groove between inner split ring 18 and inner baffle ring 17, close to dynamic in groove
The base angle of ring 13 is equipped with cambridge ring 19；
It is equipped with the first spacing ring for contacting installation two-by-two, spring 14, outer successively outward from the seal chamber innermost end of shell 2
Spacer ring 16, outer baffle ring 15 and the second spacing ring, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second limits
Position interannular is equipped with gap, and three outer baffle rings 15 are separately mounted in the groove between inner split ring 18 and inner baffle ring 17, forms labyrinth
Sealing, labyrinth seal are connected to the sealing surface between the first stationary ring 11 and rotating ring 13 and form runner 1, and the second spacing ring passes through bullet
Spring 14 is equipped with the first stationary ring 11, and the sealing surface of the first stationary ring 11 is installed with the sealing surface cooperation of rotating ring 13, rotating ring 13 it is another
The cooperation of one sealing surface is equipped with the second stationary ring 12, and the second stationary ring 12 is equipped with third spacing ring, third limit by the cooperation of spring 14
Position ring is fixedly mounted on the inner wall of seal chamber；Shell 2 is equipped between the first stationary ring 11 of connection and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixing sleeve on the outside of nearly Negative pressure machine seal chamber is equipped with the bearing 20 in shaft, the outer end of bearing 20
Face is equipped with several heat emission holes 21 led to outside shell 2, and heat emission hole 21 is connected to the sealing surface between the second stationary ring 12 and rotating ring 13
Form runner 2 23.
The both ends of the surface of rotating ring 13 are equipped with equally distributed screw type dynamic pressure groove 30, and the depth of 30 outer end of dynamic pressure groove is that 6-9 is micro-
Rice, preferably 6 microns, the depth of 30 inner end of dynamic pressure groove is 2-5 microns, preferably 2 microns, 30 outer end of dynamic pressure groove to dynamic pressure groove 30
The depth of inner end is linear distribution；The spiral angle of dynamic pressure groove 30 is 15-18 °, and the angle of helical angle can be 16 °, can increase
Into the pressure of the gas in dynamic pressure groove.
It is one in front and one in back set in each dynamic pressure groove 30 there are two being pressurized blade 31, the head of second supercharging blade 31 is set to the
One supercharging trailing edge inner arc surface side, and distance between the two be L=（w-r）, w is the head of second supercharging blade 31
The width of the dynamic pressure groove 30 of portion's position, r are the leading-edge radius on second 31 head of supercharging blade, can greatly improve increasing
Press mechanical efficiency of the blade to gas so that faster, gas atmosphere is more steady for gas boosting.
First stationary ring 11 and 12 seal face of the second stationary ring are uniformly provided with several pressure holes for being connected with high pressure gas respectively, high
Hole is pressed to be arranged close to the inner end of dynamic pressure groove 30；Pressure hole on first stationary ring and the second stationary ring seal face, which is connected with, is connected with high pressure gas
The high-pressure air pipe of body, high-pressure air pipe are connected with the gas of 2Mpa, equally, negative closing to reduce the abrasion of two seal faces
When press, it is passed through the gas that pressure continuously decreases, so that two seal faces reduce abrasion, high-pressure air pipe is equipped with control
The valve of air-flow.
The material of first stationary ring 11 and the second stationary ring 12 is impregnating metal graphite, and the material of rotating ring 13 is compound carbonizing tungsten,
The compound carbonizing tungsten includes following components by weight percent：Tungsten carbide：52 parts, titanium carbide：13 parts, titanium：16 parts, cobalt：3.7 parts, vanadium：
1.8 parts, chromium carbide：2.3 parts, binder：16 parts；The binder includes following components by weight percent：Aluminium：5.5 parts, iron：26 parts,
Molybdenum：1.3 parts, boron：1.6 part.
The preparation method of compound carbonizing tungsten includes the following steps：
Step 1：Weighing components by weight percent is：Tungsten carbide：52 parts, titanium carbide：13 parts, titanium：16 parts, cobalt：3.7 parts, vanadium：1.8
Part, chromium carbide：2.3 parts, binder：16 parts, the wherein diameter of each raw material powder is less than 2 microns, grinds 35 in the ball mill
Minute, then raw material powder is stirred 30 minutes in blender；
Step 2：Mixed raw material powder is dried in 75 DEG C of vacuum environment, in vacuum environment after drying
In near room temperature；
Step 3：Idiosome is made in raw material powder, 1320 DEG C are heated in inert gas, after being sintered 2 hours, then will be warm
It spends near 500 DEG C and keeps the temperature 30 minutes, then cooled to room temperature.
Wherein, the pressure for raw material powder being pressed into idiosome is 1350-1450kg/cm2。
Claims (2)
1. a kind of blood recovery system, including：Suction tube, Negative pressure machine, blood reservior, hemofiltration device, concentration blood bag and waste fluid bag, attract
Pipe is connect with blood reservior, and blood reservior is connect with Negative pressure machine, and blood reservior is connected with hemofiltration device, hemofiltration device respectively with concentrate blood bag and
Waste fluid bag connects；Negative pressure machine includes rotor part（1）, shell（2）And the dry gas sealing device with single action ring and double stationary rings
（3）, shell（2）It is equipped with the seal chamber of installation sealing device, dry gas sealing device（3）It is installed on shell（2）Seal chamber with
Rotor part（1）Between, for shell（2）With rotor part（1）Sealing function；
Dry gas sealing device（3）Including rotating ring（13）And the first stationary ring set on rotating ring both sides（11）And second stationary ring（12）, move
Ring（13）Mounted on rotor part（1）Shaft on, rotating ring（13）Both sides be separately installed with the fixing sleeve being sheathed in shaft,
The end face of fixing sleeve on the inside of Negative pressure machine seal chamber is equipped with the inner split ring in shaft（18）, inner split ring（18）End
Face is equipped with inner baffle ring（17）, three groups of inner split rings（18）With inner baffle ring（17）Alternate installation, inner split ring（18）With inner baffle ring（17）
Between form groove, close to rotating ring in groove（13）Base angle be equipped with cambridge ring（19）；
From shell（2）Seal chamber innermost end be equipped with successively contact the first spacing ring, the spring of installation two-by-two outward（14）, it is outer
Spacer ring（16）, outer baffle ring（15）And second spacing ring, outer spacer ring（16）With outer baffle ring（15）Three groups are mounted alternately with, outer baffle ring
（15）It is equipped with gap, three outer baffle rings with the second limit interannular（15）It is separately mounted to inner split ring（18）With inner baffle ring（17）Between
Groove in, formed labyrinth seal, labyrinth seal be connected to the first stationary ring（11）With rotating ring（13）Between sealing surface formed runner
One（22）, the second spacing ring passes through spring（14）First stationary ring is installed（11）, the first stationary ring（11）Sealing surface and rotating ring
（13）A sealing surface cooperation installation, rotating ring（13）Another sealing surface cooperation the second stationary ring is installed（12）, the second stationary ring
（12）Pass through spring（14）Cooperation is equipped with third spacing ring, and third spacing ring is fixedly mounted on the inner wall of seal chamber；Shell（2）
It is equipped with the first stationary ring of connection（11）And second stationary ring（12）With rotating ring（13）Between sealing surface sealing gas port（10）；
It is characterized in that, the first stationary ring（11）And second stationary ring（12）Material be impregnating metal graphite, rotating ring（13）Material
For compound carbonizing tungsten, the compound carbonizing tungsten includes following components by weight percent：Tungsten carbide：50-58 parts, titanium carbide：12-18 parts, titanium：
13-22 parts, cobalt：3.5-6 part, vanadium：1.5-3.5 part, chromium carbide：1.8- 4.5, binder：13-18 parts；The binder includes
Following components by weight percent：Aluminium：3-6 parts, iron：25-30 parts, molybdenum：0.8-1.5 parts, boron：1.3-2.2 part.
2. blood recovery system according to claim 1, which is characterized in that the compound carbonizing tungsten includes following weight group
Point：Tungsten carbide：55 parts, titanium carbide：16 parts, titanium：20 parts, cobalt：4.2 parts, vanadium：2.2 parts, chromium carbide：2.3, binder：14 parts；
The binder includes following components by weight percent：Aluminium：4.5 parts, iron：27 parts, molybdenum：1.2 parts, boron：1.8 part.
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| CN201610828492.2A CN106310416B (en) | 2016-09-19 | 2016-09-19 | A kind of blood recovery system |
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| CN201610828492.2A CN106310416B (en) | 2016-09-19 | 2016-09-19 | A kind of blood recovery system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5458566A (en) * | 1993-03-24 | 1995-10-17 | Haemonetics, Inc. | Reservoir volume sensing systems for autologous blood recovery |
| CN1200040A (en) * | 1995-10-20 | 1998-11-25 | 丰收技术股份有限公司 | System for collection of blood without damage |
| CN203263894U (en) * | 2013-05-13 | 2013-11-06 | 王伟敏 | Medical blood recoverer |
| CN103768672A (en) * | 2014-01-27 | 2014-05-07 | 北京万东康源科技开发有限公司 | Recycling method, device and system for erythrocytes in autoblood |
| CN206414551U (en) * | 2016-09-19 | 2017-08-18 | 齐建军 | A kind of blood recovery system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01288236A (en) * | 1988-05-17 | 1989-11-20 | Terumo Corp | Vacuum blood collector equipped with negative pressure level adjusting function |
-
2016
- 2016-09-19 CN CN201610828492.2A patent/CN106310416B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5458566A (en) * | 1993-03-24 | 1995-10-17 | Haemonetics, Inc. | Reservoir volume sensing systems for autologous blood recovery |
| CN1200040A (en) * | 1995-10-20 | 1998-11-25 | 丰收技术股份有限公司 | System for collection of blood without damage |
| CN203263894U (en) * | 2013-05-13 | 2013-11-06 | 王伟敏 | Medical blood recoverer |
| CN103768672A (en) * | 2014-01-27 | 2014-05-07 | 北京万东康源科技开发有限公司 | Recycling method, device and system for erythrocytes in autoblood |
| CN206414551U (en) * | 2016-09-19 | 2017-08-18 | 齐建军 | A kind of blood recovery system |
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