CN206414551U - A kind of blood recovery system - Google Patents
A kind of blood recovery system Download PDFInfo
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- CN206414551U CN206414551U CN201621060358.4U CN201621060358U CN206414551U CN 206414551 U CN206414551 U CN 206414551U CN 201621060358 U CN201621060358 U CN 201621060358U CN 206414551 U CN206414551 U CN 206414551U
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Abstract
The utility model discloses a kind of blood recovery system, including：Suction tube, Negative pressure machine, blood reservior, hemofiltration device, concentration blood bag and waste fluid bag, suction tube are connected with blood reservior, and blood reservior is connected with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connected 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 provided with the annular seal space for installing sealing device, dry gas sealing device is installed between the annular seal space of shell and rotor part, for the sealing function to shell and rotor part.Technical purpose of the present utility model be to provide one kind can continuous firing, reliability is higher, higher with operating efficiency, can continuous firing, can accurately control the size of negative pressure, the blood recovery system of the more preferable Negative pressure machine of sealing effectiveness.
Description
Technical field
The utility model is related 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, and haemocyte is cleaned with physiological saline, purified and concentrated,
Pure, concentration haemocyte is stored in blood bag, fed back to patient.
Existing blood recovery system after a long time use, because the reliability of Negative pressure machine is relatively low, therefore easily causes negative
There is efficiency decline in press, and Negative pressure machine takes out slowing for negative pressure, it is also possible to cause the sealing function of Negative pressure machine to fail so that
Negative pressure machine can not normal work, it is impossible to produce negative pressure, thus cause whole blood recovery system can not normal work, delay
The recovery of blood.
Utility model content
For above-mentioned problem, technical purpose of the present utility model be provide one kind can continuous firing, reliably
Property is higher, higher with operating efficiency, can continuous firing, can accurately control the size of negative pressure, sealing effectiveness is preferably born
The blood recovery system of press, this blood recovery system when being rescued to urgent patient, can relatively reliable work, so as to keep away
Exempt from because blood recovery system goes wrong and rescue or failure in treatment situation occur.
The utility model is achieved through the following technical solutions：
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 connected with blood reservior, and blood reservior is connected with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is respectively with concentrating blood bag
And waste fluid bag connection；
Negative pressure machine includes rotor part, shell and the dry gas sealing device with single action ring and double stationary rings, and shell is provided with
The annular seal space of sealing device is installed, dry gas sealing device is installed between the annular seal space of shell and rotor part, for shell
With the sealing function of rotor part.
In above-mentioned technical proposal, by provided with single action ring, double stationary rings dry gas sealing device, enable in rotating ring
Two ends form seal clearance, the both ends of the surface formation air film that sealing gas passes through rotating ring, it is to avoid contact of the stationary ring with rotating ring so that rub
Wipe power small, sealing device loss is low, sealing reliability is high.
Further, dry gas sealing device includes rotating ring and the first stationary ring and the second stationary ring located at rotating ring both sides, rotating ring
In the rotating shaft of rotor part, the both sides of rotating ring are separately installed with the fixed cover being sheathed in rotating shaft, close to negative pressure secret
The end face of the fixed cover of envelope intracavitary side is provided with the inner split ring in rotating shaft, and the end face of inner split ring is provided with inner baffle ring, three groups
Inner split ring is alternate with inner baffle ring to be installed, and is formed between inner split ring and inner baffle ring in groove, groove close to the base angle of rotating ring provided with wedge
Shape ring；
From the annular seal space innermost end of shell be sequentially provided with outward the first spacing ring for contacting installation two-by-two, spring, it is outer 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 spacing interannular are provided 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 formation runner one between one stationary ring and rotating ring, the second spacing ring is provided with the first stationary ring, the first stationary ring by spring
Sealing surface and a sealing surface of rotating ring coordinate and install, another sealing surface of rotating ring, which coordinates, is provided with the second stationary ring, the second stationary ring
Coordinated by spring and the 3rd spacing ring is installed, the 3rd spacing ring is fixedly mounted on the inwall of annular seal space；It is communicated with shell
The sealing gas port of sealing surface between first stationary ring and the second stationary ring and rotating ring.Fixed cover on the outside of Negative pressure machine annular seal space
End face is provided with the bearing in rotating shaft, and the outer face of bearing is provided with some heat emission holes for leading to housing exterior, and heat emission hole connects
Logical sealing surface formation runner two between second stationary ring and rotating ring.
In above-mentioned technical proposal, sealing gas is entered in annular seal space by sealing gas port, is rotated by the high speed of rotating ring,
Form 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, by runner one, is entered 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 too high, promote outer baffle ring that the gap at sealing is increased, increase the flow of gas,
So as to reduce the gap between rotating ring and the first stationary ring, it is to avoid the destruction of air film；And formed between the second stationary ring and rotating ring
Runner two, by the air-flow of runner two by the heat emission hole at bearing, can reduce the temperature of bearing with the radiating at bearing running
Degree, improves the reliability of Negative pressure machine；, 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 the pressure in Negative pressure machine it is excessive when, pressure is extruded outer baffle ring, so that outer gear
Gap between ring and groove diminishes, and prevents the flowing of air-flow, prevents from flowing backwards.
Further, the both ends of the surface of rotating ring are provided with equally distributed screw type dynamic pressure groove, and the depth of dynamic pressure groove outer end is 6-9
Micron, the depth of 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 provided with the outer end depth screw type dynamic pressure groove shallower compared with deep, inner end depth, dynamic pressure
The depth of groove 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 causes dynamic pressure groove to have longer length for 15-18 °, and fully sealing gas can be pressurized, from
And form sealing air film.
Further, in each dynamic pressure groove provided with a supercharging blade, the inlet incidence angle △ β of the supercharging blade=3-7 °,
It is dynamic pressure slot length to be pressurized the length of blade~.
In above-mentioned technical proposal, the supercharging blade being provided with dynamic pressure groove, supercharging 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 to the sealing gas flowed into so that gas stream
When entering the innermost end of dynamic pressure groove, with bigger pressure, so as in the presence of the seals dam formed around dynamic pressure groove, be formed close
Air film is sealed, sealed performance is improved, enables to sealing air film to be more difficult to be destroyed.
Further, one in front and one in back provided with two supercharging blades in each dynamic pressure groove, the head of second supercharging blade is set
In first inner arc surface side for being pressurized trailing edge, and distance between the two for L=（w-r）, w is second supercharging blade
The width of dynamic pressure groove at the position of head, r is the leading-edge radius of second supercharging leaf head.
In above-mentioned technical proposal, by the way that provided with two supercharging blades one in front and one in back, first blade is to just entering dynamic pressure
The porch of groove is pressurized, and second blade can be further pressurized to the gas after first blade supercharging, and may be used also
To be pressurized to the gas flowed into from the intrados side from first blade, the efficiency of supercharging is substantially increased, so as 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 can sealing gas the timing of air pressure one, improve sealed reliability, be pressurized sealed stability.
Further, the first stationary ring and the second stationary ring seal face are uniformly provided with some high pressures for being connected with gases at high pressure respectively
Hole, pressure hole is set 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
Calm the anger the high-pressure air pipe of body.
In above-mentioned technical proposal, by provided with the pressure hole for being connected with high-pressure air pipe, can when starting or closing Negative pressure machine,
Because rotating speed is not enough and easily make it that air film can not be formed between rotating ring and stationary ring and produces friction, dry gas seals are reduced
Service life；By the way that provided with when starting Negative pressure machine, preceding 3s clocks, are passed through 2-2.5Mpa gas on startup, so as to reduce by two
The abrasion of individual seal face, equally, when closing Negative pressure machine, is passed through the gas that pressure is gradually reduced, so that two sealings
End face reduces abrasion.
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 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, binding agent：13-18 parts；The binding agent 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 parts, vanadium：2.2 parts, chromium carbide：2.3, binding agent：14 parts；The binding agent 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 comprises the following steps：
Step one：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, binding agent：13-18 parts of material powder, wherein every kind of material powder
Diameter be less than 2 microns, grind 30-40 minutes, then material powder stirred 20-30 minutes in mixer in ball mill；
Step 2：Mixed 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 material powder, 1310-1340 DEG C is heated in inert gas, is sintered 1.5-2 hours
Afterwards, then by the near 500 DEG C of insulations of temperature 30 minutes, then room temperature is naturally cooled to.
Wherein, the pressure for material powder being pressed into idiosome is 1350-1450kg/cm2。
The beneficial effects of the utility model are:
1st, sealing effectiveness is enabled to more preferably by the double seals being provided with rotating ring, and in sealed gas energy
Enough bearing is cooled by runner two so that the service life of bearing is longer；Pass through the supercharging leaf being provided with dynamic pressure groove
Piece, enables to dry gas sealing device can be in lower rotating speed there is provided reliable sealing, by being pressurized blade so that close
The air-flow of envelope is influenceed smaller by the atmospheric pressure fluctuation of sealing gas so that the air film of dry gas seals is more stablized so that close
Seal effect more preferably, improve the reliability of Negative pressure machine, the floating type labyrinth seal being provided with can adjust the thickness of air film in time,
So that the thickness of air film is maintained at optimal scope；
2nd, have by tungsten carbide and titanium carbide that the material of rotating ring is set in compound carbonizing tungsten, this double carbide
Enough hardness can be used so that rotating ring is difficult to be worn for a long time, and titanium can increase the intensity of rotating ring and tough
Degree so that rotating ring improves more than 13% compared with the impact strength of prior art, and can improve its corrosion resistance, cobalt, the vanadium of addition
And titanium can reduce modulus of elasticity, the binding agent 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 more than 15% 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 is significantly improved.
Brief description of the drawings
Fig. 1 is the structural representation of dry gas sealing device；
Fig. 2 is the structural representation of the rotating ring with a supercharging blade；
Fig. 3 is the structural representation of the rotating ring with two supercharging blades；
Fig. 4 is the structural representation of Negative pressure machine.
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.
Embodiment
The utility model 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
19th, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connected with blood reservior,
Blood reservior is connected with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connected with concentration blood bag and waste fluid bag respectively；
Negative pressure machine is included on rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, shell 2
Provided with the annular seal space for installing sealing device, dry gas sealing device 3 is installed between the annular seal space of shell 2 and rotor part 1, is used for
To shell 2 and the sealing function of rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 located at rotating ring both sides, rotating ring 13
In the rotating shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixed cover being sheathed in rotating shaft, close to Negative pressure machine
The end face of fixed cover on the inside of annular seal space is provided with the inner split ring 18 in rotating shaft, and the end face of inner split ring 18 is provided with inner baffle ring
17, three groups of inner split rings 18 are alternate with inner baffle ring 17 to be installed, and is formed between inner split ring 18 and inner baffle ring 17 in groove, groove close to dynamic
The base angle of ring 13 is provided with cambridge ring 19；
Be sequentially provided with the first spacing ring for contacting installation two-by-two outward from the annular seal space innermost end of shell 2, it is spring 14, outer
Spacer ring 16, the spacing ring of outer baffle ring 15 and second, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second is limited
Position interannular is provided 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 connects the sealing surface formation runner 1 between the first stationary ring 11 and rotating ring 13, and the second spacing ring passes through bullet
Spring 14 is provided with the first stationary ring 11, and the sealing surface of the first stationary ring 11 coordinates with a sealing surface of rotating ring 13 to be installed, rotating ring 13 it is another
One sealing surface, which coordinates, is provided with the second stationary ring 12, and the second stationary ring 12 is coordinated by spring 14 is provided with the 3rd spacing ring, the 3rd limit
Position ring is fixedly mounted on the inwall of annular seal space；It is communicated with shell 2 between first stationary ring 11 and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixed cover on the outside of nearly Negative pressure machine annular seal space is provided with the bearing 20 in rotating shaft, the outer end of bearing 20
Face is provided with some heat emission holes 21 led to outside shell 2, and heat emission hole 21 connects 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 provided with equally distributed screw type dynamic pressure groove 30, and the depth of the outer end of dynamic pressure groove 30 is micro- for 6-9
Rice, preferably 7 microns, the depth of the inner end of dynamic pressure groove 30 is 2-5 microns, preferably 3 microns, the outer end of dynamic pressure groove 30 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 °, by increasing capacitance it is possible to increase
Into the pressure of the gas in dynamic pressure groove.
Provided with a supercharging blade 31 in each dynamic pressure groove 30, the inlet incidence angle △ β of the supercharging blade 31=3-7 °, 3-
7 ° of the angle of attack can increase acting of the blade to fluid, can be set to 4 °, the length of supercharging blade 31 is the length of dynamic pressure groove 30,
The afterbody and dynamic pressure groove inner end for being pressurized blade 31 are provided with a certain distance, so that must reach the gas of dynamic pressure groove innermost end can have
There is larger area to stationary ring formation gas pressure.
First stationary ring 11 and the seal face of the second stationary ring 12 are uniformly provided with some pressure holes for being connected with gases at high pressure respectively, high
Hole is pressed to be set 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 is connected with -2.5Mpa gas, so as to reduce the abrasion of two seal faces, equally, is closing
During Negative pressure machine, the gas that pressure is gradually reduced is passed through, so that two seal faces reduce abrasion, high-pressure air pipe is provided 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, binding agent：13 parts；The binding agent 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 comprises the following steps：
Step one：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, binding agent：13 parts, wherein the diameter of every kind of material powder is less than 2 microns, 30-40 is ground in ball mill
Minute, can be 35 minutes, then material powder is stirred 20-30 minutes in mixer, can be 25 minutes；
Step 2：Mixed material powder is dried in 60-75 DEG C of vacuum environment, can be by mixed original
Feed powder end is dried in 65 DEG C of vacuum environment, dry after in vacuum environment near room temperature；
Step 3：Idiosome is made in material powder, 1310-1340 DEG C is heated in inert gas, 1320 are can be heated to
DEG C, sintering is after 1.5-2 hours, sinterable 1.8 hours, then by the near 500 DEG C of insulations of temperature 30 minutes, then naturally cool to room
Temperature.
Wherein, the pressure for 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
19th, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connected with blood reservior,
Blood reservior is connected with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connected with concentration blood bag and waste fluid bag respectively；
Negative pressure machine is included on rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, shell 2
Provided with the annular seal space for installing sealing device, dry gas sealing device 3 is installed between the annular seal space of shell 2 and rotor part 1, is used for
To shell 2 and the sealing function of rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 located at rotating ring both sides, rotating ring 13
In the rotating shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixed cover being sheathed in rotating shaft, close to Negative pressure machine
The end face of fixed cover on the inside of annular seal space is provided with the inner split ring 18 in rotating shaft, and the end face of inner split ring 18 is provided with inner baffle ring
17, three groups of inner split rings 18 are alternate with inner baffle ring 17 to be installed, and is formed between inner split ring 18 and inner baffle ring 17 in groove, groove close to dynamic
The base angle of ring 13 is provided with cambridge ring 19；
Be sequentially provided with the first spacing ring for contacting installation two-by-two outward from the annular seal space innermost end of shell 2, it is spring 14, outer
Spacer ring 16, the spacing ring of outer baffle ring 15 and second, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second is limited
Position interannular is provided 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 connects the sealing surface formation runner 1 between the first stationary ring 11 and rotating ring 13, and the second spacing ring passes through bullet
Spring 14 is provided with the first stationary ring 11, and the sealing surface of the first stationary ring 11 coordinates with a sealing surface of rotating ring 13 to be installed, rotating ring 13 it is another
One sealing surface, which coordinates, is provided with the second stationary ring 12, and the second stationary ring 12 is coordinated by spring 14 is provided with the 3rd spacing ring, the 3rd limit
Position ring is fixedly mounted on the inwall of annular seal space；It is communicated with shell 2 between first stationary ring 11 and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixed cover on the outside of nearly Negative pressure machine annular seal space is provided with the bearing 20 in rotating shaft, the outer end of bearing 20
Face is provided with some heat emission holes 21 led to outside shell 2, and heat emission hole 21 connects 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 provided with equally distributed screw type dynamic pressure groove 30, and the depth of the outer end of dynamic pressure groove 30 is micro- for 6-9
Rice, preferably 8 microns, the depth of the inner end of dynamic pressure groove 30 is 2-5 microns, preferably 4 microns, the outer end of dynamic pressure groove 30 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 °, by increasing capacitance it is possible to increase
Into the pressure of the gas in dynamic pressure groove.
Provided with a supercharging blade 31 in each dynamic pressure groove 30, the inlet incidence angle △ β of the supercharging blade 31=3-7 °, 3-
7 ° of the angle of attack can increase acting of the blade to fluid, can be set to 4 °, the length of supercharging blade 31 is the length of dynamic pressure groove 30,
The afterbody and dynamic pressure groove inner end for being pressurized blade 31 are provided with a certain distance, so that must reach the gas of dynamic pressure groove innermost end can have
There is larger area to stationary ring formation gas pressure.
First stationary ring 11 and the seal face of the second stationary ring 12 are uniformly provided with some pressure holes for being connected with gases at high pressure respectively, high
Hole is pressed to be set 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 is connected with 2.5Mpa gas, so as to reduce the abrasion of two seal faces, equally, is closing
During Negative pressure machine, the gas that pressure is gradually reduced is passed through, so that two seal faces reduce abrasion, high-pressure air pipe is provided 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, binding agent：18 parts；The binding agent 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 comprises the following steps：
Step one：Weighing components by weight percent is：Tungsten carbide：58 parts, titanium carbide：18 parts, titanium：22 parts, cobalt：6 parts, vanadium：3.5
Part, binding agent：18 parts, chromium carbide：4.5, binding agent：13 parts, wherein the diameter of every kind of material powder is less than 2 microns, in ball milling
Ground 37 minutes in machine, then material powder is stirred 28 minutes in mixer；
Step 2：Mixed 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 material powder, 1310-1340 DEG C is heated in inert gas, is sintered 1.5-2 hours
Afterwards, then by the near 500 DEG C of insulations of temperature 30 minutes, then room temperature is naturally cooled to.
Wherein, the pressure for material powder being pressed into idiosome is 1350-1450kg/cm2。
Embodiment three：
Blood recovery system as shown in Fig. 1, Fig. 3 and 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
19th, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connected with blood reservior,
Blood reservior is connected with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connected with concentration blood bag and waste fluid bag respectively；
Negative pressure machine is included on rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, shell 2
Provided with the annular seal space for installing sealing device, dry gas sealing device 3 is installed between the annular seal space of shell 2 and rotor part 1, is used for
To shell 2 and the sealing function of rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 located at rotating ring both sides, rotating ring 13
In the rotating shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixed cover being sheathed in rotating shaft, close to Negative pressure machine
The end face of fixed cover on the inside of annular seal space is provided with the inner split ring 18 in rotating shaft, and the end face of inner split ring 18 is provided with inner baffle ring
17, three groups of inner split rings 18 are alternate with inner baffle ring 17 to be installed, and is formed between inner split ring 18 and inner baffle ring 17 in groove, groove close to dynamic
The base angle of ring 13 is provided with cambridge ring 19；
Be sequentially provided with the first spacing ring for contacting installation two-by-two outward from the annular seal space innermost end of shell 2, it is spring 14, outer
Spacer ring 16, the spacing ring of outer baffle ring 15 and second, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second is limited
Position interannular is provided 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 connects the sealing surface formation runner 1 between the first stationary ring 11 and rotating ring 13, and the second spacing ring passes through bullet
Spring 14 is provided with the first stationary ring 11, and the sealing surface of the first stationary ring 11 coordinates with a sealing surface of rotating ring 13 to be installed, rotating ring 13 it is another
One sealing surface, which coordinates, is provided with the second stationary ring 12, and the second stationary ring 12 is coordinated by spring 14 is provided with the 3rd spacing ring, the 3rd limit
Position ring is fixedly mounted on the inwall of annular seal space；It is communicated with shell 2 between first stationary ring 11 and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixed cover on the outside of nearly Negative pressure machine annular seal space is provided with the bearing 20 in rotating shaft, the outer end of bearing 20
Face is provided with some heat emission holes 21 led to outside shell 2, and heat emission hole 21 connects 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 provided with equally distributed screw type dynamic pressure groove 30, and the depth of the outer end of dynamic pressure groove 30 is micro- for 6-9
Rice, preferably 6 microns, the depth of the inner end of dynamic pressure groove 30 is 2-5 microns, preferably 2 microns, the outer end of dynamic pressure groove 30 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 °, by increasing capacitance it is possible to increase
Into the pressure of the gas in dynamic pressure groove.
One in front and one in back provided with two supercharging blades 31 in each dynamic pressure groove 30, the head of second supercharging blade 31 is located at the
The inner arc surface side of one supercharging trailing edge, and distance between the two for L=（w-r）, w is the head of second supercharging blade 31
The width of dynamic pressure groove 30 at portion position, r is the leading-edge radius on second supercharging blade 31 head, can greatly improve increasing
Mechanical efficiency of the pressure blade to gas so that faster, gas atmosphere is more steady for gas boosting.
First stationary ring 11 and the seal face of the second stationary ring 12 are uniformly provided with some pressure holes for being connected with gases at high pressure respectively, high
Hole is pressed to be set 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 is connected with 2Mpa gas, so that the abrasion of two seal faces is reduced, it is equally, negative closing
During press, the gas that pressure is gradually reduced is passed through, so that two seal faces reduce abrasion, high-pressure air pipe is provided 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, binding agent：14 parts；The binding agent 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 comprises the following steps：
Step one：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, binding agent：14 parts, wherein the diameter of every kind of material powder is less than 2 microns, 33 are ground in ball mill
Minute, then material powder is stirred 30 minutes in mixer；
Step 2：Mixed 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 material powder, 1330 DEG C are heated in inert gas, sintering is after 2 hours, then by temperature
Spend near 500 DEG C and be incubated 30 minutes, then naturally cool to room temperature.
Wherein, the pressure for material powder being pressed into idiosome is 1350-1450kg/cm2。
Example IV：
Blood recovery system as shown in Fig. 1, Fig. 3 and 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
19th, bearing 20, heat emission hole 21, runner 1, runner 2 23, dynamic pressure groove 30 and supercharging blade 31, suction tube is connected with blood reservior,
Blood reservior is connected with Negative pressure machine, and blood reservior is connected with hemofiltration device, and hemofiltration device is connected with concentration blood bag and waste fluid bag respectively；
Negative pressure machine is included on rotor part 1, shell 2 and the dry gas sealing device 3 with single action ring and double stationary rings, shell 2
Provided with the annular seal space for installing sealing device, dry gas sealing device 3 is installed between the annular seal space of shell 2 and rotor part 1, is used for
To shell 2 and the sealing function of rotor part 1.
Dry gas sealing device 3 includes rotating ring 13 and the first stationary ring 11 and the second stationary ring 12 located at rotating ring both sides, rotating ring 13
In the rotating shaft of rotor part 1, the both sides of rotating ring 13 are separately installed with the fixed cover being sheathed in rotating shaft, close to Negative pressure machine
The end face of fixed cover on the inside of annular seal space is provided with the inner split ring 18 in rotating shaft, and the end face of inner split ring 18 is provided with inner baffle ring
17, three groups of inner split rings 18 are alternate with inner baffle ring 17 to be installed, and is formed between inner split ring 18 and inner baffle ring 17 in groove, groove close to dynamic
The base angle of ring 13 is provided with cambridge ring 19；
Be sequentially provided with the first spacing ring for contacting installation two-by-two outward from the annular seal space innermost end of shell 2, it is spring 14, outer
Spacer ring 16, the spacing ring of outer baffle ring 15 and second, outer spacer ring 16 are mounted alternately with three groups with outer baffle ring 15, and outer baffle ring 15 and second is limited
Position interannular is provided 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 connects the sealing surface formation runner 1 between the first stationary ring 11 and rotating ring 13, and the second spacing ring passes through bullet
Spring 14 is provided with the first stationary ring 11, and the sealing surface of the first stationary ring 11 coordinates with a sealing surface of rotating ring 13 to be installed, rotating ring 13 it is another
One sealing surface, which coordinates, is provided with the second stationary ring 12, and the second stationary ring 12 is coordinated by spring 14 is provided with the 3rd spacing ring, the 3rd limit
Position ring is fixedly mounted on the inwall of annular seal space；It is communicated with shell 2 between first stationary ring 11 and the second stationary ring 12 and rotating ring 13
Sealing surface sealing gas port 10.
The end face of fixed cover on the outside of nearly Negative pressure machine annular seal space is provided with the bearing 20 in rotating shaft, the outer end of bearing 20
Face is provided with some heat emission holes 21 led to outside shell 2, and heat emission hole 21 connects 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 provided with equally distributed screw type dynamic pressure groove 30, and the depth of the outer end of dynamic pressure groove 30 is micro- for 6-9
Rice, preferably 6 microns, the depth of the inner end of dynamic pressure groove 30 is 2-5 microns, preferably 2 microns, the outer end of dynamic pressure groove 30 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 °, by increasing capacitance it is possible to increase
Into the pressure of the gas in dynamic pressure groove.
One in front and one in back provided with two supercharging blades 31 in each dynamic pressure groove 30, the head of second supercharging blade 31 is located at the
The inner arc surface side of one supercharging trailing edge, and distance between the two for L=（w-r）, w is the head of second supercharging blade 31
The width of dynamic pressure groove 30 at portion position, r is the leading-edge radius on second supercharging blade 31 head, can greatly improve increasing
Mechanical efficiency of the pressure blade to gas so that faster, gas atmosphere is more steady for gas boosting.
First stationary ring 11 and the seal face of the second stationary ring 12 are uniformly provided with some pressure holes for being connected with gases at high pressure respectively, high
Hole is pressed to be set 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 is connected with 2Mpa gas, so that the abrasion of two seal faces is reduced, it is equally, negative closing
During press, the gas that pressure is gradually reduced is passed through, so that two seal faces reduce abrasion, high-pressure air pipe is provided 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, binding agent：16 parts；The binding agent 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 comprises the following steps：
Step one：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 part, binding agent：16 parts, wherein the diameter of every kind of material powder is less than 2 microns, 35 are ground in ball mill
Minute, then material powder is stirred 30 minutes in mixer；
Step 2：Mixed 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 material powder, 1320 DEG C are heated in inert gas, sintering is after 2 hours, then by temperature
Spend near 500 DEG C and be incubated 30 minutes, then naturally cool to room temperature.
Wherein, the pressure for material powder being pressed into idiosome is 1350-1450kg/cm2。
Claims (7)
1. a kind of blood recovery system, it is characterised in that including：Suction tube, Negative pressure machine, blood reservior, hemofiltration device, concentration blood bag and
Waste fluid bag, suction tube is connected with blood reservior, and blood reservior is connected with Negative pressure machine, and blood reservior is connected with hemofiltration device, hemofiltration device difference
It is connected with concentration blood bag and waste fluid bag；
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）Provided with the annular seal space for installing sealing device, dry gas sealing device（3）It is installed on shell（2）Annular seal space and rotor part
（1）Between, for shell（2）With rotor part（1）Sealing function.
2. blood recovery system according to claim 1, it is characterised in that dry gas sealing device（3）Including rotating ring（13）And
The first stationary ring located at rotating ring both sides（11）And second stationary ring（12）, rotating ring（13）Installed in rotor part（1）Rotating shaft on, move
Ring（13）Both sides be separately installed with the fixed cover being sheathed in rotating shaft, the end face of the fixed cover on the inside of Negative pressure machine annular seal space
Inner split ring in rotating shaft is installed（18）, inner split ring（18）End face inner baffle ring is installed（17）, three groups of inner split rings（18）
With inner baffle ring（17）It is alternate to install, inner split ring（18）With inner baffle ring（17）Between formed in groove, groove close to rotating ring（13）'s
Base angle is provided with cambridge ring（19）；
From shell（2）Annular seal space innermost end be sequentially provided with the first spacing ring, the spring for contacting 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）It is mounted alternately with three groups, outer baffle ring
（15）Gap, three outer baffle rings are provided with the second spacing interannular（15）It is separately mounted to inner split ring（18）With inner baffle ring（17）Between
Groove in, formed labyrinth seal, labyrinth seal connect the first stationary ring（11）With rotating ring（13）Between sealing surface formation 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 coordinate install, rotating ring（13）Another sealing surface coordinate the second stationary ring is installed（12）, the second stationary ring
（12）Pass through spring（14）Cooperation is provided with the 3rd spacing ring, and the 3rd spacing ring is fixedly mounted on the inwall of annular seal space；Shell（2）
On be communicated with the first stationary ring（11）And second stationary ring（12）With rotating ring（13）Between sealing surface sealing gas port（10）.
3. blood recovery system according to claim 2, it is characterised in that fixed cover on the outside of Negative pressure machine annular seal space
End face is provided with the bearing in rotating shaft（20）, bearing（20）Outer face lead to shell provided with some（2）Outside radiating
Hole（21）, heat emission hole（21）Connect the second stationary ring（12）With rotating ring（13）Between sealing surface formation runner two（23）.
4. blood recovery system according to claim 2, it is characterised in that rotating ring（13）Both ends of the surface provided with equally distributed
Screw type dynamic pressure groove（30）, dynamic pressure groove（30）The depth of outer end is 6-9 microns, dynamic pressure groove（30）The depth of inner end is 2-5 microns,
Dynamic pressure groove（30）Outer end is to dynamic pressure groove（30）The depth of inner end is linear distribution；Dynamic pressure groove（30）Spiral angle be 15-18 °.
5. blood recovery system according to claim 4, it is characterised in that each dynamic pressure groove（30）Inside it is provided with a supercharging leaf
Piece（31）, the supercharging blade（31）Inlet incidence angle △ β=3-7 °, be pressurized blade（31）Length be dynamic pressure groove（30）Length
's~。
6. blood recovery system according to claim 4, it is characterised in that each dynamic pressure groove（30）Inside one in front and one in back it is provided with two
Individual supercharging blade（31）, second supercharging blade（31）Head located at the inner arc surface side of first supercharging trailing edge, and two
The distance between person be L=（w-r）, w is second supercharging blade（31）Head position at dynamic pressure groove（30）Width
Degree, r is second supercharging blade（31）The leading-edge radius on head.
7. blood recovery system according to claim 2, it is characterised in that the first stationary ring（11）And second stationary ring（12）Sealing
End face is uniformly provided with some pressure holes for being connected with gases at high pressure respectively, and pressure hole is close to dynamic pressure groove（30）Inner end set；First
Pressure hole on stationary ring and the second stationary ring seal face is connected with the high-pressure air pipe for being connected with gases at high pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621060358.4U CN206414551U (en) | 2016-09-19 | 2016-09-19 | A kind of blood recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621060358.4U CN206414551U (en) | 2016-09-19 | 2016-09-19 | A kind of blood recovery system |
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| CN206414551U true CN206414551U (en) | 2017-08-18 |
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ID=59578535
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310416A (en) * | 2016-09-19 | 2017-01-11 | 成都测迪森生物科技有限公司 | Blood recycling machine |
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2016
- 2016-09-19 CN CN201621060358.4U patent/CN206414551U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310416A (en) * | 2016-09-19 | 2017-01-11 | 成都测迪森生物科技有限公司 | Blood recycling machine |
| CN106310416B (en) * | 2016-09-19 | 2018-10-26 | 成都测迪森生物科技有限公司 | A kind of blood recovery system |
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