CN109611330B - Bidirectional rotary spherical pump cooling mechanism - Google Patents
Bidirectional rotary spherical pump cooling mechanism Download PDFInfo
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- CN109611330B CN109611330B CN201910064851.5A CN201910064851A CN109611330B CN 109611330 B CN109611330 B CN 109611330B CN 201910064851 A CN201910064851 A CN 201910064851A CN 109611330 B CN109611330 B CN 109611330B
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- 238000001816 cooling Methods 0.000 title claims abstract description 79
- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 90
- 238000010992 reflux Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 11
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 10
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 10
- 229920002530 polyetherether ketone Polymers 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C9/00—Oscillating-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0096—Heating; Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/262—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a transverse bore in the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/12—Polyetheretherketones, e.g. PEEK
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/14—Self lubricating materials; Solid lubricants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a bidirectional rotary spherical pump cooling mechanism, which comprises a feed hole (101), a cylinder cover split flow channel (1005), a cylinder body split flow channel (1007) and a cylinder body guide flow channel (1008), wherein the feed hole is sequentially communicated with the split flow part to form a cooling channel, a main shaft support guide flow channel (1004), a cylinder body lower end return flow channel (1011), a cylinder body upper end return flow channel (1002), the cylinder cover return flow channel (1001) and the feed hole (101) are sequentially communicated with each other to form a return flow part of the cooling channel, a switch valve is arranged on a cylinder body (3), and the switch valve controls the conduction of the cylinder body guide flow channel (1008) and controls the conduction between the cylinder body lower end return flow channel (1011) and the cylinder body upper end return flow channel (1002); can be used for cooling and lubricating under the condition of forward and backward rotation of the spherical pump, and meanwhile, the volumetric efficiency of the spherical pump is not reduced.
Description
Technical Field
The invention relates to the technical field of hydraulic pumps, in particular to a bidirectional rotary spherical pump cooling mechanism.
Background
The spherical pump is a variable capacity mechanism with a brand new structure, which is newly invented in recent years, and in the running process of the spherical pump, as main moving parts such as a piston, a rotary table, a central shaft and the like are all in flowing liquid, heat generated in the running process is taken away by the continuously flowing liquid, and the temperature of friction pairs at the matched parts of the piston, the rotary table and the central shaft is not increased much, so that special cooling is not needed; however, only part of liquid leaking from the spherical cavity is accumulated at the lower part of the cylinder body, at the upper end moving part of the main shaft and between the main shaft and the main shaft bracket, and the corresponding friction pair cannot be effectively cooled, so that the temperatures of the main shaft sleeve, the bearing and the upper moving part of the main shaft which are used as main shaft rotating radial friction pairs are too high, the corresponding technical solutions are provided for the cooling of the spherical pump in Chinese patent No. CN201610266963.5, no. CN201610594749.2 and No. CN201610594749.2, and the cooling of the spherical pump in the form of a clearance cooling function, and certain technical effects are achieved, but the cooling can only be realized for the spherical pump rotating in one direction, and the cooling cannot be realized when the spherical pump is reversed; the biggest disadvantage of the latter is that cooling is achieved while sacrificing the volumetric efficiency of the pump.
With the continuous expansion of the application field of the spherical pump, the occasions of the positive and negative rotation function are more and more required, and particularly for the miniature spherical pump, the heating problem in the running process of the spherical pump is more and more remarkable due to the limitation of the volume and the structure.
Disclosure of Invention
The invention aims to design a bidirectional rotary spherical pump cooling mechanism which is used for cooling and lubricating a spherical pump main shaft sleeve and a main shaft upper end moving part so as to remove heat generated by a friction pair in the running process of the spherical pump.
The technical scheme of the invention is that the bidirectional rotary spherical pump cooling mechanism is characterized in that: the cylinder cover is provided with a cylinder cover diversion channel and a cylinder cover backflow channel, the cylinder body is provided with a cylinder body diversion channel, a cylinder body upper end backflow channel and a cylinder body lower end backflow channel, and the main shaft support is provided with a main shaft support diversion trench; the air inlet and outlet holes, the cylinder cover diversion channel, the cylinder body diversion channel and the cylinder body diversion channel are sequentially communicated to form a diversion part of the cooling channel, and liquid diverted from the air inlet and outlet holes is collected in cavities formed in the lower parts of the cylinder body and the turntable and in the upper parts of the main shaft and the main shaft bracket to form a liquid collecting tank; the main shaft support diversion trench, the reflux channel at the lower end of the cylinder body, the reflux channel at the upper end of the cylinder body, the cylinder cover reflux channel and the inlet and outlet holes are sequentially communicated to form a reflux part of the cooling channel, and liquid in the liquid collecting tank is refluxed into the inlet and outlet holes through the reflux part of the cooling channel;
the cylinder body is provided with a switch valve, and the switch valve is used for controlling the conduction of the flow guide channel of the cylinder body and controlling the connection or disconnection between the return channel at the lower end of the cylinder body and the return channel at the upper end of the cylinder body;
the cylinder head cooling device comprises a cylinder head, a cylinder body, a cylinder inlet, a cylinder outlet, a cylinder head split flow channel, a cylinder body guide channel, a switching valve, a cylinder head return flow channel, a cylinder body upper end return flow channel, a cylinder body lower end return flow channel and a main shaft bracket guide groove, wherein the two groups of cooling channels are symmetrically arranged; when the spherical pump rotates positively, the switch valve of the cooling channel where the liquid inlet and outlet holes are positioned is opened, the cooling channel on the liquid inlet side realizes cooling circulation, the switch valve in the cooling channel where the liquid outlet holes are positioned is closed, and the cooling channel on the liquid outlet side is disconnected; when the spherical pump reverses, the cooling channel where the inlet and outlet holes of the liquid inlet and outlet holes of the reversing liquid outlet are positioned realizes circulation cooling, and the cooling channel where the inlet and outlet holes of the reversing liquid outlet are positioned is disconnected;
the switch valve comprises a cylindrical valve core and a valve core guide rod, wherein a through valve core pin hole and a valve core diversion channel are arranged on the cylindrical surface of the valve core in the radial direction, a valve core seat hole is arranged on the cylinder body, two valve core guide grooves are arranged on the inner hole wall of the valve core seat hole in the axial direction, a spring is arranged at the bottom of the valve core seat hole, the valve core is arranged in the valve core seat hole, the lower end surface of the valve core is pressed on the spring, the upper end surface of the valve core is propped against the lower end surface of the cylinder cover, and the valve core guide rod is inserted into the valve core pin hole; the valve core is also provided with a valve core backflow channel, and one end opening of the valve core backflow channel is arranged on the upper end surface of the valve core and is always communicated with the backflow channel at the upper end of the cylinder body; the other end opening of the valve core backflow channel is arranged on the cylindrical surface of the valve core, when the switching valve in the cooling channel is opened, the valve core moves upwards under the action of the spring, the cylinder body diversion channel is communicated with the valve core diversion channel, and the valve core backflow channel is communicated with the lower end backflow channel of the cylinder body;
the cylinder cover flow dividing channel is communicated with the upstream channel of the throttling surface of the inlet and outlet holes on the cylinder cover, and the cylinder cover return channel is communicated with the downstream channel of the throttling surface of the inlet and outlet holes on the cylinder cover;
a sealing ring is arranged at the position of the shaft neck matched with the main shaft bracket at the lower end of the main shaft;
a main shaft sleeve is arranged at the matching position of the main shaft journal and the cylinder body of the spherical pump, the main shaft sleeve is made of PEEK, a plurality of axial cooling grooves are arranged on the main shaft sleeve, and the cooling grooves are distributed on the inner cylinder and the outer cylinder surface of the main shaft sleeve;
a main shaft overflow hole is formed in the bottom of the sliding groove at the upper end of the main shaft, and liquid at the upper end of the main shaft can enter a part above a sealing ring between the main shaft and the main shaft bracket through the main shaft overflow hole;
the piston of the spherical pump and the basal body of the turntable are made of metal materials, and the PEEK wear-resistant layer is coated on the surface of the basal body made of the metal materials.
The invention has the advantages that: the method is simple, the cooling efficiency is high, the volume of the original spherical pump is not increased, the processing cost is low, the production and processing manufacturability is good, the method is used for cooling and lubricating the spherical pump under the condition of forward and reverse rotation, and meanwhile, the volumetric efficiency of the spherical pump is not reduced, so that the method is applicable to oil media and aqueous media.
Drawings
FIG. 1 is a schematic diagram of a spherical pump configuration;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3: FIG. 1 is a sectional view B-B;
fig. 4: FIG. 1 is a cross-sectional view C-C;
fig. 5: FIG. 1 is a sectional view of D-D;
fig. 6: a spherical pump cylinder cover structure schematic diagram;
fig. 7: FIG. 6 is a sectional view of E-E;
fig. 8: a spherical pump cylinder structure schematic diagram;
fig. 9: FIG. 8 is a cross-sectional view of F-F;
fig. 10: the valve core structure of the switch valve is schematically shown;
fig. 11: FIG. 10 is a sectional view of G-G;
fig. 12: a piston structure schematic diagram;
fig. 13: a turntable structure schematic diagram;
fig. 14: a main shaft sleeve structure schematic diagram;
fig. 15: a schematic structure of the slipper;
fig. 16: a main shaft structure schematic diagram;
fig. 17: FIG. 16 is a section H-H;
fig. 18: a main shaft bracket structure schematic diagram;
fig. 19: FIG. 18 is a cross-sectional view I-I;
in the figure: 1-a cylinder cover; 2-a central axis; 3-cylinder; 4-valve core; 5-a spring; 6-a spindle bracket; 7-a piston sleeve; 8-a piston; 9-a turntable; 10-skid shoes; 11-a spindle sleeve; 12-sealing rings; 13-bearing; 14-a main shaft; 15-a valve core guide rod; 16-plugs;
101-feeding and discharging holes; 102-a waist-shaped hole; 103-cylinder cover screw holes; 104-locating pin holes; 105-piston shaft hole; 106, a cylinder threaded hole; 107-valve core seat holes; 108-a valve core guide groove; 110-valve core pin holes; 111-a chute;
1001-cylinder cover return channel; 1002-a reflux passage at the upper end of the cylinder body; 1003-valve core return passage; 1004-a main shaft bracket diversion trench; 1005-cylinder head split flow channel; 1006—working chamber; 1007-cylinder split flow channel; 1008-cylinder guide channel; 1009—spool split passage; 1010-spindle overflow aperture; 1011-the lower end of the cylinder body.
Detailed Description
As shown in fig. 1 to 3, 6 to 9, the spherical pump includes a cylinder head 1, a cylinder block 3, a piston 8, a rotary disk 9, a central shaft 2, a main shaft 14, a main shaft bracket 6, etc., as in the conventional spherical compressor structure; the cylinder cover 1 is provided with 5 cylinder cover screw holes 103 and 2 positioning pin holes 104, the cylinder body 3 is provided with 5 corresponding cylinder body screw holes 106 and 2 positioning pin holes 104, the cylinder cover 1 and the cylinder body 3 are provided with hemispherical inner spherical surfaces, the cylinder cover 1 and the cylinder body 3 are connected through screws to form a spherical inner cavity, a through hole which is suitable for the working process of a turntable shaft is arranged in the center below the inner spherical surface of the cylinder body 3, the lower end surface of the cylinder body 3 is also provided with a main shaft sleeve hole matched with the outer diameter of a main shaft sleeve 11 and used as a rotary upper support of a main shaft 14; the spindle bracket 6 is provided with 5 screw through holes, and the spindle bracket 6 is connected with the lower end of the cylinder body 3 through screws.
As shown in fig. 12, the piston 8 has a spherical top surface, a piston shaft extending from the center of the spherical top surface, two side surfaces forming a certain angle, and piston pin bosses formed at the lower parts of the two side surfaces of the piston 8, the piston pin bosses have a semi-cylindrical structure, and a through piston pin hole is formed in the axial direction of the piston pin bosses; an opening gear is arranged on a piston pin seat at the lower part of the piston 8, so that a fan-shaped cavity is formed on the piston pin seat of the piston 8, the opening gear of the piston 8 is positioned in the middle of the piston pin seat and is perpendicular to the axis of a piston pin hole of the piston pin seat, and the opening gear width of the piston 8 is matched with the width of a semicircular column of the turntable pin seat. The cylinder cover 1 is provided with a piston shaft hole 105, the shaft diameter of the piston shaft is matched with the piston shaft hole 105, the piston shaft is inserted into the piston shaft hole 105 to form running fit, the piston 8 can freely rotate in the spherical inner cavity around the axis of the piston shaft, and the spherical top surface of the piston has the same sphere center with the spherical inner cavity and forms sealing running fit.
As shown in fig. 13, the turntable 9 has a turntable shaft, a turntable spherical surface, and a turntable pin socket; the spherical inner cavity formed by the cylinder body 3 and the cylinder cover 1 has the same sphere center as the sphere of the turntable, and the sphere of the turntable is tightly clung to the spherical inner cavity to form sealing movable fit; the two ends of the turntable pin boss of the turntable 9 are semi-cylindrical grooves, the middle part of the turntable pin boss is a convex semi-cylinder, and a through turntable pin hole is formed in the axis direction of the semi-cylinder; the convex semi-cylinder in the middle of the turntable pin seat is matched with the opening gear in the middle of the piston pin seat, the semi-cylinder grooves at two ends of the turntable pin seat are matched with the semi-cylinder structures formed at two ends of the piston pin seat, the central shaft 2 is inserted into the piston pin hole of the piston 8 and the turntable pin hole of the turntable 9 to form a cylindrical hinge, the piston 8 and the turntable 9 are in sealed movable connection through the cylindrical hinge, the piston 8 and the turntable 9 can swing relatively around the cylindrical hinge, and the spherical inner cavity is divided into two symmetrical working chambers 1006.
As shown in fig. 14 to 17, one end (upper end) of the main shaft 14 is a rectangular chute 111, the main shaft 14 is connected to the lower end of the cylinder 3 through the main shaft bracket 6, the lower end of the turntable shaft of the turntable 9 is fixedly connected with a sliding shoe 10 (the sliding shoe 10 is fixedly riveted to the lower end of the turntable shaft through a pin), and the sliding shoe 10 is matched with the chute 111 at the upper end of the main shaft 14. The rotary disc shaft extends out of the rotary disc shaft hole at the lower part of the cylinder body 3 and is inserted into a sliding groove 111 at the upper end of the main shaft 14 to be connected with the main shaft 14, and the other end (lower end) of the main shaft 14 is connected with a power mechanism; the axes of the piston shaft, the turntable shaft and the main shaft 14 pass through the sphere center of the spherical cavity formed by the cylinder body 3 and the cylinder cover 1, and the axes of the piston shaft and the turntable shaft and the axis of the main shaft 14 form the same included angle alpha, wherein alpha is 15 degrees in the embodiment; the main shaft bracket 6 provides support for the rotation of the main shaft 14, a main shaft sleeve 11 is arranged at the part where the upper end journal of the main shaft 14 is matched with the lower end of the cylinder body 3, a bearing 13 is arranged at the part where the lower end journal of the main shaft 14 is matched with the main shaft bracket 6, and the bearing 13 and the main shaft sleeve 11 serve as a main shaft 14 rotating pair. A sealing ring 12 is arranged at the matching position of the shaft neck and the main shaft bracket 6 in the middle part of the main shaft 14, so that the cooling liquid cannot leak from the bearing end part.
When the main shaft 14 rotates, the turntable 9 is driven, and the turntable 9 drives the piston 8 to move; the movement of the piston 8 is the only rotation about the axis of the piston shaft, and the movement of the turntable 9 is a combination of two movements: the rotation around the axis of the rotary table is realized, and the axis of the rotary table always passes through the spherical center of the spherical cavity and moves circumferentially on the surface of a virtual cone which takes the spherical center of the spherical cavity as an apex and the axis of the rotary table is coincident with the axis of the main shaft 14 (namely, the axis of the rotary table 9 sweeps the conical surface of the cone); the above spatial mechanism movements are all rotational movements, so there is no high vibration moving part, and the result of the spatial movements is: the piston 8 and the rotary table 9 have periodic relative swinging; the sliding shoes 10 connected with the turntable shaft reciprocate in the sliding grooves 111 in the upper end face of the main shaft 14, and a pair of working chambers 1006 with alternating pressure are formed in the spherical inner cavity by using the relative oscillation as a basic motion element of volume change; during operation of the ball pump, the volume of the working chamber 1006 varies continuously.
As shown in fig. 2 and 3, in order to increase the wear resistance and lubricity of the piston 8 and the turntable 9, a PEEK wear-resistant layer is coated on the piston 8 and the turntable 9 of a steel matrix, the steel skeleton ensures the basic strength of the piston 8 and the turntable 9, the PEEK coating improves the wear resistance of the piston 8 and the turntable 9, and the PEEK coating has self-lubricating performance, oil resistance and water resistance; in this embodiment, considering the working conditions of the piston shaft and the turntable shaft, the piston shaft hole 105 on the cylinder cover 1 is provided with the piston shaft sleeve 7 made of PEEK material, and the slipper 10 at the end of the turntable 9 is made of PEEK material. As shown in fig. 14, the main shaft sleeve 11 is used as a rotary support, and is made of PEEK material with low wear resistance and low friction coefficient, and a plurality of axial cooling grooves are formed in the main shaft sleeve 11 and distributed on the inner and outer cylindrical surfaces of the main shaft sleeve 11.
As shown in fig. 6 to 9, two intake and exhaust holes 101 and two kidney-shaped holes 102 are formed in the cylinder cover 1, the two intake and exhaust holes 101 are formed in the outer surface of the cylinder cover 1, the two kidney-shaped holes 102 are formed in the inner spherical surface of the cylinder cover 1, a throttling step is formed in each intake and exhaust hole 101, the step surface is used as a throttling surface, the part, downstream of the throttling surface, of which the diameter is smaller than the opening diameter of the intake and exhaust holes 101 is used as a working chamber intake and exhaust channel, negative pressure is formed in the working chamber intake and exhaust channel, and the intake effect of the working chamber is increased; meanwhile, the opening of the connecting part of the cylinder cover backflow channel 1001 and the air inlet and outlet hole 101 is arranged on the throttle surface, or the upstream of the throttle surface, the drift diameter of the air inlet and outlet channel is smaller than that of the air inlet and outlet hole 101 and that of the working chamber, so that negative pressure is formed in the cylinder cover backflow channel, and the diversion effect is improved; the intake and exhaust holes 101 are connected with the kidney-shaped holes 102 through the intake and exhaust channels of the working chambers, and the rotation of the piston 8 and the matching of the spherical surface of the piston 8 and the hemispherical inner surface of the cylinder cover 1 are used as basic movement elements for respectively communicating or closing the two intake and exhaust holes 101 and the two working chambers 1006, so that the intake and exhaust control is realized. When the working chamber needs to absorb liquid, the working chamber is communicated with the liquid inlet and outlet holes 101 through the kidney-shaped holes 102, and liquid is sucked from the liquid inlet pipe through the liquid inlet and outlet holes 101; when the working chamber needs to drain, the working chamber is communicated with a drain inlet hole 101, the drain inlet hole 101 discharges high-pressure liquid into a high-pressure drain pipe through a kidney-shaped hole 102, and the piston 8 and the rotary table 9 rotate 360 degrees around the axis of the main shaft respectively every 360 degrees; since the two working chambers 1006 are symmetrically distributed, the ball pump performs a liquid feeding and discharging cycle every time the spindle 14 makes one revolution.
Since the sliding shoe 10 at the lower end of the turntable 9 slides back and forth in the sliding groove at the upper end of the spindle 14 during the rotation process, the spindle sleeve 11 of the spindle 14 rotates in the spindle sleeve hole 109 at the lower end of the cylinder body, and a great amount of heat is generated due to the rotation friction between the spindle 14 and the spindle bracket 6, the parts generate heat and deform, the power consumption becomes large, the flow rate is reduced, and the like, therefore, the parts above the spherical pump are required to be cooled during the operation process of the spherical pump.
As shown in fig. 1 to 5, two intake and exhaust holes 101 are provided on the cylinder head 1, one intake and exhaust hole 101 is used for intake and exhaust when the spherical pump rotates forward, and the other intake and exhaust hole 101 is used for exhaust; the liquid is discharged from the liquid inlet and outlet holes 101 in the forward rotation when the liquid is reversely rotated, and the liquid is discharged from the liquid inlet and outlet holes 101 in the forward rotation; each inlet and outlet hole 101 can be respectively communicated with a working chamber 1006 of the spherical pump through a kidney-shaped hole 102 arranged on the inner spherical surface of the cylinder cover 1 to realize liquid inlet and liquid outlet in the working process, and a throttling step is arranged in each inlet and outlet hole 101. The cooling mechanism comprises two cooling channels, namely two groups of inlet and outlet holes 101, a cylinder cover flow dividing channel 1005, a cylinder body flow dividing channel 1007, a cylinder body flow dividing channel 1008, a switching valve, a cylinder cover flow returning channel 1001, a cylinder body upper end flow returning channel 1002, a cylinder body lower end flow returning channel 1011 and a main shaft bracket flow guiding groove 1004, which are symmetrically arranged to form two groups of cooling channels, namely a liquid inlet side cooling channel and a liquid outlet side cooling channel; the cooling channel where the inlet and outlet holes 101 of the liquid inlet are located is a liquid inlet side cooling channel, and the cooling channel where the liquid outlet inlet and outlet holes 101 of the liquid outlet are located is a liquid outlet side cooling channel.
The liquid inlet of each cooling channel sequentially enters the cavities of the lower parts of the cylinder body 3 and the rotary table 9 and the upper parts of the main shaft 14 and the main shaft bracket 6 through a cylinder cover diversion channel 1005, a cylinder body diversion channel 1007 and a valve core diversion channel 1009 on the switching valve on the same side (a liquid inlet side or a liquid outlet side of a spherical pump), a liquid collecting tank is formed, the liquid which is shunted from the same side discharge hole 101 is collected in the liquid collecting tank, a main shaft overflow hole 1010 is formed at the bottom of a chute 111 at the upper end of the main shaft 14, the liquid at the upper end of the main shaft 14 conveniently enters a part above a sealing ring between the main shaft 14 and the main shaft bracket 6, the matching part of the main shaft bracket 6 and the main shaft 14 is cooled, and a sealing ring 12 is arranged at the matching shaft neck of the lower end of the main shaft 14 and the main shaft bracket 6. As shown in fig. 18-19, the number of the main shaft support diversion trenches 1004 is two, the upper end of the main shaft support diversion trench 1004 is communicated with the reflux channel at the lower end of the cylinder body, the lateral opening of the main shaft support diversion trench is communicated with the liquid collecting tank, and meanwhile, the lateral opening of the main shaft support diversion trench 1004 is also communicated with more than the sealing ring 12 on the journal of the main shaft 14; the liquid in the liquid collecting tank enters a return channel 1011 at the lower end of the cylinder body at the same side through a main shaft overflow hole 1010 and a main shaft bracket flow guide groove 1004, enters a return channel 1002 at the upper end of the cylinder body at the same side through a valve core return channel 1003 on the same side switching valve, enters a return channel 1001 of the cylinder cover at the same side from the return channel 1002 at the upper end of the cylinder body at the same side, and the return channel 1001 of the cylinder cover at the same side is communicated with a downstream channel (namely a liquid inlet and outlet channel of a working chamber of liquid inlet and outlet hole 101) of the throttling surface of the cylinder cover at the same side; the upper end of the same-side head split passage 1005 is provided on the throttle surface of the same-side intake port 101.
A switch valve is also arranged in the middle of the cylinder guide channel 1008, and is used for controlling the on-off of the cylinder guide channel 1008 and controlling the connection or disconnection of a channel between the return channel 1011 at the lower end of the cylinder and the return channel 1002 at the upper end of the cylinder; as shown in fig. 2 to 5 and 8 to 11, the switch valve comprises a cylindrical valve core 4 and a valve core guide rod 15, a through valve core pin hole 110 and a valve core diversion channel 1009 are radially arranged on the cylindrical surface of the valve core 4, a valve core seat hole 107 is arranged on the cylinder body 3, two valve core guide grooves 108 are axially arranged on the inner hole wall of the valve core seat hole 107, a spring 5 is arranged at the bottom of the valve core seat hole 107, and the valve core 4 is arranged in the valve core seat hole 107; the lower end face of the valve core 4 is pressed on the spring 5, the upper end face is propped against the lower end face of the cylinder cover 1, the valve core guide rod 15 is inserted into the valve core pin hole 110, two ends of the valve core guide rod 15 are guided in the valve core guide groove 108 by the valve core guide groove 108, and the valve core 4 can move up and down in the valve core seat hole 107 by the valve core guide rod 15 along the valve core guide groove 108; a valve core backflow channel 1003 is also arranged on the valve core 4, and one end opening of the valve core backflow channel 1003 is arranged on the upper end surface of the valve core 4 and is always communicated with a backflow channel 1002 at the upper end of the cylinder body; the switch valve is arranged on the section of the cylinder diversion channel 1008 and between the reflux channel 1002 at the upper end of the cylinder and the reflux channel 1011 at the lower end of the cylinder, and the valve core 4 of the switch valve divides the cylinder diversion channel 1008 into the front end of the cylinder diversion channel and the rear end of the cylinder diversion channel for controlling the opening or the closing of the cylinder diversion channel 1008; for convenience in processing, the cylinder guide channels 1008 in the process are communicated in the diameter direction of the cylinder 3, and plugs 16 are arranged at one ends of the two cylinder guide channels 1008, which are close to the outer cylindrical surface, so that liquid leakage is prevented; in the cooling channel at the liquid inlet side, as the liquid in the valve core backflow channel 1003 is low-pressure liquid, the valve core 4 is pushed to move upwards under the action of the spring 5, the valve core 4 moves upwards, the cylinder body flow guide channel 1008 is communicated with the valve core flow guide channel 1009, and the liquid separated from the water inlet and outlet hole 101 enters a liquid collecting pool through the cylinder cover flow guide channel 1005, the cylinder body flow guide channel 1007, the front end of the cylinder body flow guide channel 1008, the valve core flow guide channel 1009 and the rear end of the cylinder body flow guide channel 1008 to cool the connection part of the main shaft 14 and the sliding shoe 10 and the main shaft sleeve 11; the other end opening of the valve core backflow channel 1003 is arranged on the cylindrical surface of the valve core 4, when the valve core 4 of the switching valve in the cooling channel is opened (the valve core moves upwards), the valve core backflow channel 1003 is communicated with the backflow channel 1011 at the lower end of the cylinder body, and liquid at the lower part of the liquid collecting tank flows back into the inlet and outlet hole 101 at the liquid inlet side through the main shaft bracket diversion trench 1004, the backflow channel 1011 at the lower end of the cylinder body, the valve core backflow channel 1003, the backflow channel 1002 at the upper end of the cylinder body and the backflow channel 1001 of the cylinder cover in sequence and is sucked into the working chamber 1006 of the liquid inlet; in the drain side cooling channel, since the liquid in the valve core return channel 1003 is high pressure liquid, the high pressure liquid pushes the spring 5 to compress, the valve core 4 moves down in the valve core seat hole 107, the valve core 4 is closed, so that the cylinder guide channel 1008 is closed (the valve core shunt channel 1009 is not connected with the cylinder guide channel 1008), the valve core return channel 1003 is disconnected from the return channel 1011 at the lower end of the cylinder, and the drain side cooling channel is blocked.
The working process of the cooling mechanism is as follows:
the main shaft 14 rotates to drive the turntable 9 and the piston 8 to rotate, the main shaft 14 rotates for 360 degrees, and the two working chambers 1006 respectively perform once complete liquid feeding and discharging processes; as the spindle continues to rotate, the two working chambers 1006 alternate the advance and discharge processes.
When the ball pump rotates positively, a spring 5 below a switch valve in a cooling channel where a liquid inlet and outlet hole 101 is positioned jacks up a valve core 4 of the switch valve, a valve core diversion channel 1009 on the valve core 4 is communicated with a cylinder diversion channel 1008 on a cylinder 3, a valve core backflow channel 1003 on the valve core 4 is communicated with a cylinder lower end backflow channel 1011, cooling liquid is shunted from the liquid inlet and outlet hole 101, and enters a liquid collection tank after passing through a cylinder cover diversion channel 1005, a cylinder body diversion channel 1007, a cylinder diversion channel 1008 and the valve core diversion channel 1009 which are arranged on a cylinder cover 1 in sequence; liquid in the liquid collecting tank sequentially passes through a main shaft bracket guide groove 1004, a cylinder body lower end return channel 1011, a valve core return channel 1003, a cylinder body upper end return channel 1002 and a cylinder cover return channel 1001 which are arranged on the main shaft bracket 6, and then enters a downstream channel throttled in the side discharge hole 101, and is sucked into a working chamber 1006 along with liquid in the liquid inlet and outlet channel, so that cooling circulation is formed in a liquid inlet side cooling channel; at this time, since the high-pressure liquid is in the liquid discharge inlet and outlet hole 101, the valve element 4 compresses the spring 5 to move downward to close the valve element 4, the cylinder guide passage 1008 is closed, and the cylinder lower end return passage 1011 is not communicated with the valve element return passage 1003, so that the liquid discharge side cooling passage communicated with the liquid discharge inlet and outlet hole 101 is closed;
similarly, when the ball pump is reversed, the on-off valve in the cooling passage communicating with the inlet/outlet hole 101 for the reversed liquid feed is opened to form a cooling cycle, and at this time, since the liquid communicating with the inlet/outlet hole 101 for the liquid discharge is at high pressure, the valve element 4 in the cooling passage on the liquid discharge side compresses the spring 5 to move down to close the valve element 4, the valve element split passage 1009 on the valve element 4 is not communicated with the cylinder guide passage 1008, and the valve element return passage 1003 is not communicated with the cylinder lower end return passage 1011, so the cooling passage communicating with the inlet/outlet hole 101 for the liquid discharge is closed.
Claims (6)
1. A bidirectional rotary spherical pump cooling mechanism is characterized in that: a cylinder cover diverting channel (1005) and a cylinder cover backflow channel (1001) are arranged on the cylinder cover (1), a cylinder body diverting channel (1007), a cylinder body diversion channel (1008), a cylinder body upper end backflow channel (1002) and a cylinder body lower end backflow channel (1011) are arranged on the cylinder body (3), and a main shaft bracket diversion trench (1004) is arranged on the main shaft bracket (6); the inlet and outlet hole (101), the cylinder cover diverting channel (1005), the cylinder body diverting channel (1007) and the cylinder body diversion channel (1008) are sequentially communicated to form a diverting part of the cooling channel, and liquid diverted from the inlet and outlet hole (101) is collected in cavities formed by the lower parts of the cylinder body (3) and the turntable (9), the main shaft (14) and the upper parts of the main shaft bracket (6) to form a liquid collecting pool; the main shaft support diversion trench (1004), the reflux channel (1011) at the lower end of the cylinder body, the reflux channel (1002) at the upper end of the cylinder body, the cylinder cover reflux channel (1001) and the inlet and outlet hole (101) are sequentially communicated to form a reflux part of the cooling channel, and liquid in the liquid collecting tank is refluxed into the inlet and outlet hole through the reflux part of the cooling channel;
wherein, a switch valve is arranged on the cylinder body (3), and the switch valve is used for controlling the conduction of the cylinder body flow guide channel (1008) and controlling the connection or disconnection between the reflux channel (1011) at the lower end of the cylinder body and the reflux channel (1002) at the upper end of the cylinder body;
wherein, the inlet and outlet holes (101), the cylinder cover flow dividing channel (1005), the cylinder body flow dividing channel (1007), the cylinder body flow guiding channel (1008), the switch valve, the cylinder cover flow returning channel (1001), the cylinder body upper end flow returning channel (1002), the cylinder body lower end flow returning channel (1011) and the main shaft bracket flow guiding groove (1004) are all two groups, symmetrically arranged to form two groups of cooling channels; when the spherical pump rotates positively, the switch valve of the cooling channel where the liquid inlet and outlet hole (101) is positioned is opened, the cooling channel at the liquid inlet side realizes cooling circulation, the switch valve in the cooling channel where the liquid outlet inlet and outlet hole (101) is positioned is closed, and the cooling channel at the liquid outlet side is disconnected; when the spherical pump is reversed, the cooling channel where the inlet and outlet holes (101) of the liquid inlet and outlet are positioned is circularly cooled, and the cooling channel where the inlet and outlet holes (101) of the liquid outlet are positioned is disconnected; the switching valve comprises a cylindrical valve core (4) and a valve core guide rod (15), wherein a through valve core pin hole (110) and a valve core diversion channel (1009) are formed in the cylindrical surface of the valve core (4) in the radial direction, a valve core seat hole (107) is formed in the cylinder body (3), two valve core guide grooves (108) are formed in the inner hole wall of the valve core seat hole (107) in the axial direction, a spring (5) is arranged at the bottom of the valve core seat hole (107), the valve core (4) is arranged in the valve core seat hole (107), the lower end surface of the valve core (4) is pressed on the spring (5), the upper end surface is propped against the lower end surface of the cylinder cover (1), and the valve core guide rod (15) is inserted into the valve core pin hole (110); a valve core backflow channel (1003) is further arranged on the valve core (4), and one end opening of the valve core backflow channel (1003) is arranged on the upper end surface of the valve core (4) and is always communicated with the backflow channel (1002) at the upper end of the cylinder body; the other end opening of the valve core backflow channel (1003) is arranged on the cylindrical surface of the valve core (4), when a switching valve in the cooling channel is opened, the valve core (4) moves upwards under the action of a spring (5), the cylinder body diversion channel (1008) is communicated with the valve core diversion channel (1009), and the valve core backflow channel (1003) is communicated with the backflow channel (1011) at the lower end of the cylinder body.
2. The bi-directional rotary spherical pump cooling mechanism of claim 1, wherein: the cylinder cover split flow channel (1005) is communicated with an upstream channel of a throttling surface of the inlet and outlet hole (101) in the cylinder cover (1), and the cylinder cover return flow channel (1001) is communicated with a downstream channel of the throttling surface of the inlet and outlet hole (101) in the cylinder cover (1).
3. The bi-directional rotary spherical pump cooling mechanism of claim 1, wherein: a sealing ring (12) is arranged at the shaft neck of the lower end of the main shaft (14) matched with the main shaft bracket (6).
4. The bi-directional rotary spherical pump cooling mechanism of claim 1, wherein: a spindle sleeve (11) is arranged at the matching position of a spindle (14) journal and a cylinder body (3) of the spherical pump, the spindle sleeve (11) is made of PEEK, a plurality of axial cooling grooves are formed in the spindle sleeve (11), and the cooling grooves are distributed on an inner cylinder and an outer cylinder surface of the spindle sleeve (11).
5. The bi-directional rotary spherical pump cooling mechanism of claim 1, wherein: the bottom of the chute at the upper end of the main shaft (14) is provided with a main shaft overflow hole (1010), and liquid at the upper end of the main shaft (14) can enter a part above a sealing ring (12) between the main shaft (14) and a main shaft bracket (6) through the main shaft overflow hole (1010).
6. The bi-directional rotary spherical pump cooling mechanism of claim 1, wherein: the base bodies of the piston (8) and the rotary table (9) of the spherical pump are made of metal materials, and the surface of the base body made of the metal materials is coated with a PEEK wear-resistant layer.
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| CN110701040B (en) * | 2019-11-01 | 2023-12-01 | 深圳市球形动力科技有限公司 | Static pressure support for spherical pump rotor |
| EP4053411A4 (en) * | 2019-11-01 | 2023-11-15 | Shenzhen Spherical Fluid Power Technology Co., Ltd | Spherical pump rotor static pressure support and spherical pump provided with static pressure support |
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Effective date of registration: 20230829 Address after: A706, Block A, TCL Building, No. 6 Gaoxinyuan 1st Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province, 518000 Applicant after: Shenzhen Spherical Power Technology Co.,Ltd. Address before: No. 1604, building 1, Kaiyuan commercial and residential building, Beilin Industrial Park, Beilin District, Xi'an City, Shaanxi Province, 710043 Applicant before: XI'AN ZHENGAN ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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