CN111207073A - Screw pump for non-vortex homogeneous conveying - Google Patents
Screw pump for non-vortex homogeneous conveying Download PDFInfo
- Publication number
- CN111207073A CN111207073A CN201811390131.XA CN201811390131A CN111207073A CN 111207073 A CN111207073 A CN 111207073A CN 201811390131 A CN201811390131 A CN 201811390131A CN 111207073 A CN111207073 A CN 111207073A
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- China
- Prior art keywords
- screw
- pump
- cavity
- sealing
- screw pump
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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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of screw pumps, and particularly relates to a non-vortex homogeneous conveying screw pump, wherein an accommodating cavity is communicated with a pressure outlet pipe through a sealing cavity formed by sealing and matching a screw rod and a lining on the outer circumferential surface of the accommodating cavity, one end of the screw rod extends into the pressure outlet pipe, the other end of the screw rod extending into one port of the accommodating cavity is axially connected to one end of a connecting device, and the other end of the connecting device is connected to a transmission device through a mechanical sealing device outside the other port of the accommodating cavity.
Description
Technical Field
The invention belongs to the technical field of screw pumps, and particularly relates to a screw pump for non-vortex homogeneous delivery.
Background
A screw pump is a positive displacement rotary pump which sucks and discharges a liquid by a change in the volume of a sealed chamber formed by a screw and a liner. The screw pump is divided into a screw pump for non-vortex homogeneous conveying, a double-screw pump, a triple-screw pump and a five-screw pump according to the number of screws, and the screw pump has the characteristics of stable flow, small pressure pulsation, self-absorption capacity, low noise, high efficiency, long service life and reliable work.
Disclosure of Invention
The invention provides a screw pump for non-vortex homogeneous delivery, which aims to solve the problems that in the prior art, vortex is easy to form when a medium is delivered, the sensitivity to the viscosity of the medium is too high, and the high-viscosity medium is difficult to deliver.
The technical problem solved by the invention is realized by adopting the following technical scheme: a screw pump for uniform delivery without vortex is composed of a cavity communicated with the sucking tube, a pressure tube communicated with said cavity via a sealing cavity formed by screw and the sleeve on external circumference surface, a pressure tube with one end extended into said pressure tube and another end axially connected to one end of a linking unit, and a drive unit connected to said linking unit via a mechanical sealing unit.
Further, the accommodating cavity is axially provided with a coupling device.
Furthermore, the coupling device comprises a universal joint, one end of the universal joint is axially connected to the other end of the screw rod, the other end of the universal joint is axially connected to one end of the connecting shaft, and the other end of the connecting shaft is axially connected to a transmission shaft of the transmission device extending into the accommodating cavity.
Further, the mechanical sealing device comprises a stuffing box filled with stuffing, one end of the stuffing box is connected outside the other port of the accommodating cavity in a sealing mode, and the inner diameter of the stuffing is connected to the outer circumferential surface of the transmission device extending out of the accommodating cavity in a mechanical sealing mode through a sealing body.
Furthermore, transmission device includes the transmission shaft, transmission shaft one end stretches into in holding the intracavity, and its other end supports through the transmission bearing that cup joints in it and connects in the bracket.
The beneficial technical effects are as follows:
1. the screw pump is a rotary pump which conveys liquid or pressurizes the liquid by means of volume change and movement of meshing space formed by a pump body and a screw, when a driving screw rotates, the driving screw is driven to rotate together with a driven screw meshed with the driving screw, the volume of the meshing space of the screw at one end of a suction cavity is gradually increased, the pressure is reduced, the liquid enters the volume of the meshing space under the action of pressure difference, when the volume is increased to the maximum to form a sealed cavity, the liquid continuously moves in the sealed cavities along the axial direction, the single screw type transport pump has the main working components of a screw rod of an eccentric spiral body, namely a rotor, a screw rod bushing with a double-line spiral surface on the inner surface and a stator, and has the working principle that when a motor drives a pump shaft to rotate, the screw rod rotates around the axis of the screw rod on one hand, and rolls along the inner surface of the bushing on the other hand, so that a sealed chamber of the pump is formed. The liquid in the sealing cavity advances by a screw pitch in each rotation of the screw, and the liquid is pressed from one sealing cavity to the other sealing cavity in a spiral mode along with the continuous rotation of the screw, and finally the pump body is extruded. The screw pump is a new type of machine for conveying liquid, because of the special geometric shapes of the two parts, separate sealed cavities are respectively formed, the medium is axially and uniformly pushed to flow, the internal flow rate is low, the volume is kept unchanged, the pressure is stable, so that no vortex and stirring are generated, and because the stator is made of various elastic materials, the pump has the characteristics that the pump cannot be competent by common pumps for conveying high-viscosity fluid and hard suspended particle-containing medium or fiber-containing medium, so that the pump has the characteristics of no vortex, no sensitivity to the viscosity of the medium and capability of conveying high-viscosity medium.
2. The novel liquid discharging device has the advantages of simple structure, safety and reliability in work, convenience in use and maintenance, continuous and uniform liquid discharging, stable pressure and the like.
3. This patent adopts hold intracavity axial assembly coupling device, coupling device includes the universal joint, universal joint one end axial connection is in the other end of screw rod, and its other end axial connection is in the one end of connecting axle, the other end axial connection of connecting axle is in stretching into the transmission shaft in the transmission who holds the transmission in chamber, because the transmission can adopt shaft coupling direct drive, or adopts the buncher, the V-belt, device variable speeds such as gearbox, this kind of pump part is few, compact structure, and is small, and it is simple and convenient to maintain, and rotor and stator are the vulnerable part of this pump, simple structure, are convenient for install and remove.
4. This patent simple structure, practicality are most suitable for the suction and discharge of glutinous thick liquid.
Drawings
Fig. 1 is a schematic structural view of a screw pump for uniform delivery without vortex according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
in the figure: 1-suction pipe, 2-containing cavity, 3-screw, 4-bushing, 5-sealing cavity, 6-extrusion pipe, 7-connecting device, 8-mechanical sealing device, 9-transmission device, 10-universal joint, 11-connecting shaft, 12-filler, 13-filler box, 14-sealing body, 15-transmission shaft, 16-transmission bearing and 17-bracket.
Example (b):
in this embodiment: as shown in fig. 1, a single screw 3 pump includes an accommodating cavity 2 penetrating through a suction pipe 1, the accommodating cavity 2 penetrates through a pressure-discharge pipe 6 through a sealing cavity 5 formed by sealing and matching a screw 3 and a bushing 4 on the outer circumferential surface of the accommodating cavity, one end of the screw 3 extends into the pressure-discharge pipe 6, the other end of the screw extending into one port of the accommodating cavity 2 is axially connected to one end of a coupling device 7, and the other end of the coupling device 7 is connected to a transmission device 9 through a mechanical sealing device 8 outside the other port of the accommodating cavity 2.
Because the screw pump is a rotary pump which conveys liquid or pressurizes the liquid by means of volume change and movement of an engaging space formed by a pump body and the screw, when the driving screw rotates, the driven screw engaged with the driving screw is driven to rotate together, the volume of the engaging space of the screw at one end of the suction cavity is gradually increased, the pressure is reduced, the liquid enters the volume of the engaging space under the action of differential pressure, and when the volume is increased to the maximum to form a sealed cavity, the liquid continuously moves axially in the sealed cavities, the single screw type transport pump has the main working components of a screw rod of an eccentric spiral body, namely a rotor, a screw rod bushing with a double-line spiral surface on the inner surface and a stator, and has the working principle that when a motor drives a pump shaft to rotate, the screw rod rotates around the axis of the screw rod on one hand, and rolls along the inner surface of the bushing on the other hand, so that a sealed chamber of the pump is formed. The liquid in the sealing cavity advances by a screw pitch in each rotation of the screw, and the liquid is pressed from one sealing cavity to the other sealing cavity in a spiral mode along with the continuous rotation of the screw, and finally the pump body is extruded. The screw pump is a new type of machine for conveying liquid, because of the special geometric shapes of the two parts, separate sealed cavities are respectively formed, the medium is axially and uniformly pushed to flow, the internal flow rate is low, the volume is kept unchanged, the pressure is stable, so that no vortex and stirring are generated, and because the stator is made of various elastic materials, the pump has the characteristics that the pump cannot be competent by common pumps for conveying high-viscosity fluid and hard suspended particle-containing medium or fiber-containing medium, so that the pump has the characteristics of no vortex, no sensitivity to the viscosity of the medium and capability of conveying high-viscosity medium.
The coupling means 7 are axially fitted inside said housing 2.
The coupling device 7 comprises a universal joint 10, one end of the universal joint 10 is axially connected to the other end of the screw rod 3, the other end of the universal joint is axially connected to one end of a connecting shaft 11, and the other end of the connecting shaft 11 is axially connected to a transmission shaft 15 of a transmission device 9 extending into the accommodating cavity 2.
Because hold intracavity axial assembly coupling device, coupling device includes the universal joint, universal joint one end axial connection is in the other end of screw rod, and its other end axial connection is in the one end of connecting axle, the other end axial connection of connecting axle is in stretching into the transmission shaft in the transmission who holds the chamber, because the transmission can adopt shaft coupling direct drive, or adopts devices such as buncher, V-belt, gearbox to change speed, this kind of pump part is few, compact structure, and is small, and the maintenance is simple and convenient, and rotor and stator are the vulnerable part of this pump, simple structure, are convenient for install and remove.
The mechanical sealing device 8 comprises a stuffing box 13 which is filled with stuffing 12, one end of the stuffing box 13 is connected outside the other port of the accommodating cavity 2 in a sealing mode, and the inner diameter of the stuffing 12 is connected with the outer circumferential surface of the transmission device 9 which extends out of the accommodating cavity 2 in a mechanical sealing mode through a sealing body 14.
The transmission device 9 comprises a transmission shaft 15, one end of the transmission shaft 15 extends into the accommodating cavity 2, and the other end of the transmission shaft is supported and connected to a bracket 17 through a transmission bearing 16 sleeved on the transmission shaft.
The screw pump has the advantages of safe and reliable operation, convenient use and maintenance, continuous and uniform liquid outlet, stable pressure and the like due to simple structure adjustment and installation of the screw pump for non-vortex homogeneous delivery.
The screw pump without vortex homogeneous conveying has high practicability and is suitable for sucking and discharging viscous liquid.
The working principle is as follows:
the screw pump is a rotary pump which conveys liquid or pressurizes the liquid by means of volume change and movement of meshing space formed by a pump body and a screw, when a driving screw rotates, the driving screw is driven to rotate together with a driven screw meshed with the driving screw, the volume of the meshing space of the screw at one end of a suction cavity is gradually increased, the pressure is reduced, the liquid enters the volume of the meshing space under the action of pressure difference, when the volume is increased to the maximum to form a sealed cavity, the liquid continuously moves in the sealed cavities along the axial direction, the single screw type transport pump has the main working components of a screw rod of an eccentric spiral body, namely a rotor, a screw rod bushing with a double-line spiral surface on the inner surface and a stator, and has the working principle that when a motor drives a pump shaft to rotate, the screw rod rotates around the axis of the screw rod on one hand, and rolls along the inner surface of the bushing on the other hand, so that a sealed chamber of the pump is formed. The liquid in the sealing cavity advances by a screw pitch in each rotation of the screw, and the liquid is pressed from one sealing cavity to the other sealing cavity in a spiral mode along with the continuous rotation of the screw, and finally the pump body is extruded. The screw pump is a novel liquid conveying machine, because the special geometric shapes of the two parts form independent sealed cavities respectively, media flow uniformly in an axial direction, the internal flow rate is low, the volume is kept unchanged, and the pressure is stable, so that the screw pump can not generate vortex and stirring.
Claims (3)
1. A screw pump for uniform conveying without vortex is composed of a cavity communicated with the sucking tube, a pressure tube communicated with said cavity via a sealing cavity formed by screw and the sleeve on external circumference of said cavity, a pressure tube with one end extended into said pressure tube and another end axially connected to one end of a linking unit, and a drive unit connected to said linking unit via a mechanical sealing unit.
2. A swirl-free homogeneous delivery screw pump according to claim 1, in which the housing chamber is fitted axially with coupling means.
3. A screw pump according to claim 1, wherein the coupling means comprises a universal joint having one end axially connected to the other end of the screw and the other end axially connected to one end of a connecting shaft, the other end of the connecting shaft being axially connected to a drive shaft of a drive extending into the receiving chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390131.XA CN111207073A (en) | 2018-11-21 | 2018-11-21 | Screw pump for non-vortex homogeneous conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390131.XA CN111207073A (en) | 2018-11-21 | 2018-11-21 | Screw pump for non-vortex homogeneous conveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111207073A true CN111207073A (en) | 2020-05-29 |
Family
ID=70785240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811390131.XA Pending CN111207073A (en) | 2018-11-21 | 2018-11-21 | Screw pump for non-vortex homogeneous conveying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111207073A (en) |
-
2018
- 2018-11-21 CN CN201811390131.XA patent/CN111207073A/en active Pending
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Application publication date: 20200529 |
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| WD01 | Invention patent application deemed withdrawn after publication |