CN109595152A - A kind of big flow twin flue parallel connection three-apexed rotor pump - Google Patents
A kind of big flow twin flue parallel connection three-apexed rotor pump Download PDFInfo
- Publication number
- CN109595152A CN109595152A CN201910002480.8A CN201910002480A CN109595152A CN 109595152 A CN109595152 A CN 109595152A CN 201910002480 A CN201910002480 A CN 201910002480A CN 109595152 A CN109595152 A CN 109595152A
- Authority
- CN
- China
- Prior art keywords
- rotor
- pump
- big flow
- parallel connection
- twin flue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
-
- 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
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention provides a kind of big flow twin flue parallel connection three-apexed rotor pump, belongs to paste body filling pump technical field.The impeller pump includes drive end bearing bracket, rear end cap, main shaft, rotor, cylinder body, diaphragm seal, external gear and internal gear, cylinder body and drive end bearing bracket, rear end cap collectively constitute the working space of impeller pump, rotor is in the working space internal rotating, main shaft passes through rear end cap, main shaft drives rotor rotation, internal gear is in contact with rotor, and diaphragm seal is arranged on drive end bearing bracket and is sealed to the working space of impeller pump.The present invention can overcome the defects of plunger pump structure complexity, low efficiency, part is more, manufacturing process is high, expensive, operation and maintenance requirement is high, flow pulsation is big, noise is big, and meets the needs of paste body filling high-pressure high-flow pumping, big flow pumping is solved using the problems such as installation caused by large-diameter pipeline, maintenance and replacement, structure is simple, at low cost, high pressure, being capable of the pumping of small diameter pipeline big flow.
Description
Technical field
The present invention relates to paste body filling pump technical fields, particularly relate to a kind of big flow twin flue parallel connection three-apexed rotor pump.
Background technique
Paste body filling technology is at home and abroad widely used, and reasonable pipeline transportation process is filling system warp
Ji, the key of efficient operation.Lotion viscosity is high, pipe resistance is big, main using pump pressure conveying technique under normal circumstances.Due to cream
The plastic viscosity and yield stress of body are larger, and it is relatively difficult for conveying under normal circumstances by flow by gravity, especially at big times
When line long-distance sand transport, pump pressure conveying is almost the unique method of paste body filling.Pump pressure conveying is the main of lotion pipeline
Mode, and delivery pump is the key equipment of the technique, is the core for pumping filling system.The technical parameter of pumping equipment, performance
It is directly related to the success or failure of pumping paste filling technique.
The characteristics of ointment pumping, requires pump machine used to have the characteristics that high pressure, big flow.And high pressure can only be using liquid not
Compressible feature is realized by positive displacement pump.Two class of reciprocating pump and impeller pump can be classified as according to positive displacement pump movement characteristic.
And reciprocating pump can be divided into piston pump and two kinds of diaphragm pump according to the way of contact of reciprocating piston pump and pumped (conveying) medium.Impeller pump is then
It is divided into gear pump, screw pump, sliding-vane pump, flexible-impeller pump, lobe pump, rubber pipe pump, lobed rotor pump, double cam impeller pump, rotation
Turn piston pump etc., wherein gear pump and screw pump are the most common impeller pumps.In addition to this other kinds of pump machine has centrifugal
Pulp pump, water isolation pump etc..The pressure head of common impeller pump is higher, but flow is small, it is high suitable for transport viscosity, have lubricity,
But not solids-laden fluid, so not being suitable for big flow ointment pumping.And centrifugal pump etc. then due to pressure is too small cannot
Meet ointment pumping operating condition.Currently, domestic and international application is in the mainly reciprocating plunger pump of ointment pumping.
The advantages of reciprocating plunger pump is that principle is simple, main component is pressurized, and uniform, pressure is high, flow is big, major defect
It is that structure is extremely complex, number of components is very more, manufacturing process requirement is high and expensive, the high, flow to operation and maintenance requirement
Pulsation is big, noise is big, each reciprocation cycle effectively pumping is primary, plunger and cylinder body are that face contact resistance is big, hydraulic oil pair
Pollution sensibility etc..Meanwhile as pumpability constantly increases, big flow pipe transportation technology is another problem faced, cream
The working flow rate of body filling pipeline conveying guarantees that flow causes pipe diameter super in big flow mine in 1.0m/s or so
Greatly, for example, the pipeline of 200mm only mounting cost is highly detrimental to pipe just more than the summation of 150mm piping cost and mounting cost
Road installation and maintenance and replacement usually；If using lesser caliber, to guarantee that big flow conveying will lead to flow velocity again
Substantial increase causes the on-way resistance of pipeline to rise too fast acceleration pipe wear.For this reason, it is necessary to invent a kind of novel
Pump machine in conjunction with reciprocating plunger pump and the advantages of being pumped by of impeller pump, and has big flow pumping, structure simply special
Point.The technology is with small diameter pipeline parallel technology combines, overcomes plunger pump the shortcomings that, and it is real to can use lesser caliber
Existing big flow pumping.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of big flow twin flue parallel connection three-apexed rotor pumps.
The impeller pump includes drive end bearing bracket, rear end cap, main shaft, rotor, cylinder body, diaphragm seal, external gear and internal gear, cylinder body with
Drive end bearing bracket, rear end cap collectively constitute the working space of impeller pump, and rotor passes through rear end in the working space internal rotating, main shaft
Lid, main shaft drive rotor rotation, and external gear is fixed on drive end bearing bracket, and internal gear is fixed on rotor, and internal gear and external gear are nibbled
It closes, setting diaphragm seal is sealed the working space of impeller pump on drive end bearing bracket.
Wherein, rotor is triangle, and rotor will be divided into 3 different operating rooms, be respectively completed different works in cylinder body
It recycles.
Rotor rotates in cylinder body.
Drive end bearing bracket, rear end cap and rotor are fitted close, and form end face seal；Cylinder body is in contact with 3 vertex of rotor, complete
At apex seal.
The torque of external motor is converted to the pump pressure of impeller pump pump machine by main shaft.
Internal gear and external gear remain engagement, and internal gear and external gear gear ratio are 3:2.
The theory shaped wire of three-apexed rotor pump cylinder is double arc epitrochoids, and the theory shaped wire of rotor is cylinder
The interior envelope of line.
Inner surface of cylinder block molded line, that is, epicycloid equation is as follows:
Wherein, R is epicycloidal generating radius；E is the distance between cylinder axis and rotor center, i.e. bias
Away from；A is angle of eccentricity.
The molded line of three-apexed rotor is the epicycloidal interior envelope of cylinder inner wall, and curved dies parsing is as follows:
X=2ecosucos 3v+Rcos 2v
Y=2esinusin 3v+Rsin 2v
Wherein, u and v is two not independent variables, relationship are as follows:
3e sin 3v+Rsin (2v-u)=0
3 basic parameters of impeller pump are rotor generating radius R, (rotor width is rotor thickness to rotor width B, is turned
Sub- width B should be 4~5 times of eccentric distance e) and eccentric distance e.The determination of this 3 basic parameters, it can determine that big flow is double
The swept volume of a single chamber of pipeline parallel connection three-apexed rotor pump:
φ in formulamaxFor full swing angle, e is eccentricity, and B is rotor width, and R is rotor generating radius, and α is main shaft
Angle, VaoFor groove volume.
The main machine frame of big flow twin flue parallel connection three-apexed rotor pump of the present invention is by a pair of of phase internal-external gear and eccentric shaft
Composed planetary mechanism, cylinder body theory shaped wire are double arc epitrochoids, and the theory shaped wire of rotor is cylinder shaped conductor
Interior envelope.External gear is fixed on pump housing drive end bearing bracket, and big flow twin flue parallel connection three-apexed rotor pumps trunnion and passes through external tooth
It takes turns and concentric, internal gear is fixed on rotor, and the rotor journal of main shaft is through in the bearing hole of rotor.Inside and outside gear begins
Engagement is kept eventually, and input torque can be expanded three times by gear ratio 3:2.
The advantageous effects of the above technical solutions of the present invention are as follows:
In above scheme, capable of overcoming plunger pump, structure is complicated, low efficiency, part is more, manufacturing process is high, cost is high
Expensive, operation and maintenance requires the defects of high, flow pulsation is big, noise is big, and meets the need of paste body filling high-pressure high-flow pumping
Ask, solve big flow pumping using the problems such as installation caused by large-diameter pipeline, maintenance and replacement, realize structure it is simple,
The ointment pumpings technical requirements such as at low cost, high pressure, the pumping of small diameter pipeline big flow.
Detailed description of the invention
Fig. 1 is big flow twin flue parallel connection three-apexed rotor pump configuration schematic diagram of the invention；
Fig. 2 is the schematic diagram of big flow twin flue parallel connection three-apexed rotor of the present invention pump；
Fig. 3 is the process chart of big flow twin flue parallel connection three-apexed rotor of the present invention pump, wherein a is on the left of rotor angle A
Suck slurry, slurry is discharged in right side, sucking slurry, left side discharge slurry on the right side of rotor angle B；B is sucking material on the left of rotor angle B
Slurry is discharged in slurry, right side, and slurry is discharged in sucking slurry, left side on the right side of rotor angle C；C is that slurry, right side are sucked on the left of rotor angle B
Slurry is discharged, slurry is discharged in sucking slurry, left side on the right side of rotor angle A；D is sucking slurry on the left of rotor angle C, right side discharge material
Slurry is discharged in slurry, rotor angle B right side sucking slurry, left side；
Fig. 4 is big flow twin flue parallel connection three-apexed rotor pump machine sectional view of the present invention；
Fig. 5 is big flow twin flue parallel connection three-apexed rotor pump machine left view of the present invention；
Fig. 6 is big flow twin flue parallel connection three-apexed rotor pump machine rotor three dimensional design figure of the present invention；
Fig. 7 is big flow twin flue parallel connection three-apexed rotor pump machine cylinder body three dimensional design figure of the present invention；
Fig. 8 is big flow twin flue parallel connection three-apexed rotor pump machine main shaft three dimensional design figure of the present invention；
Fig. 9 is big flow twin flue parallel connection three-apexed rotor pump machine gear three dimensional design figure of the present invention；
Figure 10 is that impeller pump three-dimensional of the present invention assembles effect picture.
Wherein: 1- rear end cap；2- main shaft；3- rotor；4- cylinder body；5- diaphragm seal；6- internal gear；7- drive end bearing bracket；8- external tooth
Wheel；11-1 pipeline circulation；22-2 pipeline circulation.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of big flow twin flue parallel connection three-apexed rotor pump.
As shown in Fig. 1, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, the impeller pump include drive end bearing bracket 7, rear end cap 1,
Main shaft 2, rotor 3, cylinder body 4, diaphragm seal 5, external gear 8 and internal gear 6, cylinder body 4 and drive end bearing bracket 7, rear end cap 1 collectively constitute rotor
The working space of pump, for rotor 3 in the working space internal rotating, main shaft 2 passes through rear end cap 1, and main shaft 2 drives rotor 3 to rotate, outside
Gear 8 is fixed on drive end bearing bracket 7, and internal gear 6 is fixed on rotor 3, and internal gear 6 and external gear 8 engage, and is arranged on drive end bearing bracket 7
Diaphragm seal 5 is sealed the working space of impeller pump.
Wherein, rotor 3 is triangle, and rotor 3 will be divided into 3 different operating rooms, be respectively completed different in cylinder body 4
Working cycles.Rotor 3 rotates in cylinder body 4.For big flow twin flue parallel connection three-apexed rotor pump, rotor plays past simultaneously
The effect of piston in multiple plunger pump.
Drive end bearing bracket 7, rear end cap 1 and rotor 3 are fitted close, and form end face seal；Cylinder body 4 connects with 3 vertex of rotor 3
Apex seal is completed in touching.For big flow twin flue parallel connection three-apexed rotor pump, the sealing on end face and vertex is main logical
Diaphragm seal guarantee is crossed, big flow twin flue parallel connection three-apexed rotor pumps end face and processes groove, carries out end face to install sealing strip
Sealing, and 3 vertex then need to install link block and diaphragm seal.
The torque of external motor is converted to the pump pressure of impeller pump pump machine by main shaft 2.
The effect of internal gear and external gear mainly guarantees the rotatable phase of rotor and main shaft, itself is not subject to power
Effect, but due to mismachining tolerance etc., gear is still subject to part stress, it is therefore desirable to have certain intensity.
Internal gear 6 and external gear 8 remain engagement, and internal gear 6 and 8 gear ratio of external gear are 3:2.
The theory shaped wire of three-apexed rotor pump cylinder is double arc epitrochoids, and the theory shaped wire of rotor is cylinder
The interior envelope of line.
In a particular application, it is power source that big flow twin flue parallel connection three-apexed rotor pump, which is using external motor, by motor
Kinetic energy be converted into the mechanical energy of lotion.The motion profile on three-apexed rotor vertex is mutually be overlapped with pump machine inner wall always during the motion
It closes, cylinder interior space is divided into three autonomous working rooms by rotor, and as rotor rotates, the volume of three operating rooms constantly becomes
Change.When input service, the pump housing is stationary, and main shaft drives rotor journal drive rotor to slide along pump housing inner surface, and rotor is on one side
Around center rotation, another side is revolved around pump housing center, worked so as to complete lotion charging, the discharge course of work
Journey is as shown in Figure 3.Motor drives volume of the rotor rotation with moving chamber from large to small, and lotion is discharged the pipeline of operating room 1
The outlet (Fig. 2) of the outlet of circulation 11 and No. 2 pipeline circulations 22, during the volume of operating room changes from small to big, lotion is opened
Begin to recycle 11 import by No. 1 pipeline and the import of No. 2 pipelines circulations 22 is inhaled into until swept volume of a single chamber maximum, to complete
One cycle period.The other operating room Liang Ge is working simultaneously, and volume changing rule is same, only there is one
A time location is poor.Therefore motor shaft turns three weeks, and from circling, three operating rooms have been respectively completed and have recycled twice three-apexed rotor,
Big flow twin flue parallel connection three-apexed rotor pumps total suction discharge respectively twice.When the single swept volume of a single chamber of three-apexed rotor pump machine and back and forth
When formula plunger pump is identical, efficiency is its twice.
Big flow twin flue parallel connection three-apexed rotor pump is mainly characterized by: three-apexed rotor only makes rotating motion, and turns each time
Dynamic all to be fed discharge twice, due to not moving back and forth in vain, efficiency is very high.It has concurrently back and forth to a certain extent
Plunger pump, rubber pipe pump, all advantages of impeller pump and lobe pump, and compared with them, big flow twin flue parallel connection three-apexed rotor
The advantages that construction of pump is simplest, and also light-weight, small in size.From the point of view of course of work angle, big flow twin flue
Three-apexed rotor pump and reciprocating plunger pump in parallel belong to positive displacement pump, but they constructively differ widely.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of big flow twin flue parallel connection three-apexed rotor pump, it is characterised in that: including drive end bearing bracket (7), rear end cap (1), main shaft
(2), rotor (3), cylinder body (4), diaphragm seal (5), external gear (8) and internal gear (6), cylinder body (4) and drive end bearing bracket (7), rear end cap
(1) working space of impeller pump is collectively constituted, rotor (3) passes through rear end cap (1) in the working space internal rotating, main shaft (2),
Main shaft (2) drives rotor (3) rotation, and external gear (8) is fixed on drive end bearing bracket (7), and internal gear (6) is fixed on rotor (3), interior
Gear (6) and external gear (8) engage, and setting diaphragm seal (5) is sealed the working space of impeller pump on drive end bearing bracket (7).
2. big flow twin flue parallel connection three-apexed rotor according to claim 1 pump, it is characterised in that: the rotor (3) is
Triangle, rotor (3) will be divided into 3 different operating rooms in cylinder body (4), be respectively completed different working cycles.
3. big flow twin flue parallel connection three-apexed rotor pump according to claim 1, it is characterised in that: the rotor (3) exists
Rotation in cylinder body (4).
4. big flow twin flue parallel connection three-apexed rotor pump according to claim 2, it is characterised in that: the drive end bearing bracket (7),
Rear end cap (1) and rotor (3) are fitted close, and form end face seal；Cylinder body (4) is in contact with 3 vertex of rotor (3), completes
Apex seal.
5. big flow twin flue parallel connection three-apexed rotor pump according to claim 1, it is characterised in that: the main shaft (2) will
The torque of external motor is converted to the pump pressure of impeller pump pump machine.
6. big flow twin flue parallel connection three-apexed rotor pump according to claim 1, it is characterised in that: the internal gear (6)
Engagement is remained with external gear (8), and internal gear (6) and external gear (8) gear ratio are 3:2.
7. big flow twin flue parallel connection three-apexed rotor pump according to claim 1, it is characterised in that: the three-apexed rotor pump
The theory shaped wire of cylinder body is double arc epitrochoids, and the theory shaped wire of rotor is the interior envelope of cylinder shaped conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002480.8A CN109595152A (en) | 2019-01-02 | 2019-01-02 | A kind of big flow twin flue parallel connection three-apexed rotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002480.8A CN109595152A (en) | 2019-01-02 | 2019-01-02 | A kind of big flow twin flue parallel connection three-apexed rotor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109595152A true CN109595152A (en) | 2019-04-09 |
Family
ID=65964999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910002480.8A Pending CN109595152A (en) | 2019-01-02 | 2019-01-02 | A kind of big flow twin flue parallel connection three-apexed rotor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595152A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879283A (en) * | 2021-03-17 | 2021-06-01 | 南京奎道科技有限公司 | Triangular rotor pump |
| CN114837920A (en) * | 2022-05-24 | 2022-08-02 | 广州大学 | Peristaltic pump with triangular rotor |
| CN116378817A (en) * | 2023-04-07 | 2023-07-04 | 南京拓和机电科技有限公司 | Rotor cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517507A (en) * | 1974-07-08 | 1976-01-21 | Minoru Kagawa | KAITENDENDOSOCHI |
| DE4425429A1 (en) * | 1994-07-19 | 1996-01-25 | Juergen Walter | Hydraulic machine used as motor or pump |
| JPH0842462A (en) * | 1994-07-27 | 1996-02-13 | Sato Shinku Kikai Kogyo Kk | Rotary pump |
| US6014791A (en) * | 1998-02-09 | 2000-01-18 | Soundesign, L.L.C. | Quiet vacuum cleaner using a vacuum pump with a lobed chamber |
| JP2002130150A (en) * | 2000-10-18 | 2002-05-09 | Naka Instruments Co Ltd | Liquid drive |
| CN1851271A (en) * | 2006-05-22 | 2006-10-25 | 陕西科技大学 | Triangular rotor hydraulic pump |
-
2019
- 2019-01-02 CN CN201910002480.8A patent/CN109595152A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517507A (en) * | 1974-07-08 | 1976-01-21 | Minoru Kagawa | KAITENDENDOSOCHI |
| DE4425429A1 (en) * | 1994-07-19 | 1996-01-25 | Juergen Walter | Hydraulic machine used as motor or pump |
| JPH0842462A (en) * | 1994-07-27 | 1996-02-13 | Sato Shinku Kikai Kogyo Kk | Rotary pump |
| US6014791A (en) * | 1998-02-09 | 2000-01-18 | Soundesign, L.L.C. | Quiet vacuum cleaner using a vacuum pump with a lobed chamber |
| JP2002130150A (en) * | 2000-10-18 | 2002-05-09 | Naka Instruments Co Ltd | Liquid drive |
| CN1851271A (en) * | 2006-05-22 | 2006-10-25 | 陕西科技大学 | Triangular rotor hydraulic pump |
Non-Patent Citations (1)
| Title |
|---|
| 董景辉: "三角转子泵", 《化工与通用机械》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879283A (en) * | 2021-03-17 | 2021-06-01 | 南京奎道科技有限公司 | Triangular rotor pump |
| CN112879283B (en) * | 2021-03-17 | 2024-05-28 | 南京奎道科技有限公司 | Triangular rotor pump |
| CN114837920A (en) * | 2022-05-24 | 2022-08-02 | 广州大学 | Peristaltic pump with triangular rotor |
| CN114837920B (en) * | 2022-05-24 | 2023-05-26 | 广州大学 | Triangular rotor peristaltic pump |
| CN116378817A (en) * | 2023-04-07 | 2023-07-04 | 南京拓和机电科技有限公司 | Rotor cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11454351B2 (en) | Multiphase flow mixed delivery method employing reciprocating driving performed by liquid in two chambers and device thereof | |
| CN109595152A (en) | A kind of big flow twin flue parallel connection three-apexed rotor pump | |
| CN209490981U (en) | A kind of pump shaft oiling station | |
| CN103883520B (en) | The rotor-type submersible pump of eccentric shaft and motor direct connection | |
| CN106014971B (en) | A kind of eccentric revolution grouting pump of big flow and its application method | |
| CN105715541A (en) | Extrusion type eccentric rotary oil transfer pump, application and use method thereof | |
| WO2024093343A1 (en) | Reciprocating power assembly and pump mechanism | |
| CN103670999B (en) | A kind of piston valving double-action linear electric motor drive reciprocating pump | |
| CN208138133U (en) | A kind of double drive herringbone gear pump device | |
| CN102367799A (en) | Spiral pipe pump | |
| CN108361189A (en) | A kind of two-way radial plunger pump and its assignment method of motor-driven Flat valve | |
| CN103671087A (en) | Pumps with revolving piston structure, related products and part of embodiments | |
| CN207830113U (en) | A kind of two-way radial plunger pump of motor-driven Flat valve | |
| CN208651258U (en) | Rotor pump shaft sealing device | |
| CN208236589U (en) | A kind of convex dribbling plug emulsion pump of valve type fluid-distributing axial | |
| CN201236799Y (en) | Translational rotating compression device | |
| CN207847929U (en) | A kind of single-screw pump | |
| CN109488550B (en) | Reciprocating liquid pump driven by bevel gear and used for engineering vehicle | |
| CN110107486A (en) | A kind of bellows squeezes the hydraulic peristaltic pump of form | |
| CN213540707U (en) | But impeller pump of automatically cleaning | |
| CN219571587U (en) | Double-cylinder lubricating grease pump | |
| CN209053782U (en) | A kind of spherical spinner pump | |
| CN204553211U (en) | A kind of helical rotor displacement pump | |
| CN204283889U (en) | Micro-compressor | |
| CN220378525U (en) | Energy-saving water supply pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190409 |