CN104912811A - Screw pump - Google Patents
Screw pump Download PDFInfo
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- CN104912811A CN104912811A CN201510332738.2A CN201510332738A CN104912811A CN 104912811 A CN104912811 A CN 104912811A CN 201510332738 A CN201510332738 A CN 201510332738A CN 104912811 A CN104912811 A CN 104912811A
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- screw
- stator
- screw pump
- main shaft
- universal joint
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Abstract
The invention discloses a screw pump. The screw pump comprises a stator, a screw, a pump body and a bearing seat, wherein the screw is arranged in the stator, a pull rod is arranged on the outer side of the stator, an outlet short pipe is arranged on one side of the stator, an auxiliary supporting frame and a middle supporting frame are arranged under the stator, the outlet short pipe is fixedly connected with the pull rod, the stator, the pump body and the bearing seat are sequentially and fixedly connected, a bearing and a main shaft are arranged in the bearing seat, a connecting rod is arranged in the pump body, a universal joint I and a universal joint II are arranged at the two ends of the connecting rod respectively, the connecting rod is connected with the screw through the universal joint I and connected with the main shaft through the universal joint II, a coupler and a motor are arranged on one side of the main shaft, the motor is connected with the main shaft through the coupler, and a ceramic heating coil is arranged under the pump body. The screw pump is stable in flow, small in pressure pulse, low in noise, high in efficiency and long in service life, has a self-suction capacity, and can work normally for highly viscous fluid.
Description
Technical field
The present invention relates to a kind of pump housing technical field, particularly relate to a kind of screw pump.
Background technique
Screw pump is that the spatial volume that engages relying on the pump housing and screw rod to be formed changes and the mobile rotary pump carried liquid or make it supercharging.Screw pump is divided into helical rotor pump, two screw pump and three screw pump etc. by screw rod number.When active bolt rotary, drive and rotate together with the driven screw of its engagement, the screw rod engagement spatial volume of suction chamber one end increases gradually, and pressure reduces.Liquid enters engagement spatial volume under differential pressure action.When volume increase to maximum and form a Seal cage time, liquid just moves vertically continuously, until discharge side one end in Seal cage one by one.At this moment the screw rod engagement spatial volume of discharge side one end reduces gradually, and is discharged by liquid.The working principle of screw pump is similar to gear pump, just structurally instead of gear with screw rod.Table is the features and application scope of various screw pump.The flow of screw pump and pressure pulse are very little, and noise and vibration is little, have suction capacity, but screw rod processing is more difficult.Pump has single-suction and double-sucking type two kinds of structures, but helical rotor pump only has single-suction.Pump must wear safety valve (helical rotor pump need not be worn), damages pump or prime mover to prevent from making delivery side of pump pressure exceed admissible value as discharge tube blocking for a certain reason.That a kind of single screw type transports pump, the screw rod lining (weighed son) in its main working parts to be the screw rod of eccentric screw body (title rotor) and internal surface be bifilar helix face.Its working principle is that when motor drives pump shaft to rotate, screw rod rotates around the axis of itself on the one hand, and it rolls along sleeve inner surface again on the other hand, so form the sealed chamber of pump.Screw rod often circles, and the liquid in Seal cage pushes ahead a pitch, and along with the continuous rotation of screw rod, liquid spiral fashion presses to another Seal cage from a Seal cage, finally extrudes the pump housing.Screw pump is a kind of machinery of novel conveying liquid, has the advantages such as structure is simple, safe and reliable, easy maintenance, fluid continuous uniform, pressure stability.
Often kind of plastics, have the processing temperature scope of a desirable plasticizing, should control barrel processing temperature, make it close to this temperature range.Granulated plastic enters barrel from hopper, first can arrive feeding section, will inevitably occur that dryness rubs at feeding section, when these plastics are heated deficiency, when melting is uneven, very easily causes material tube inner wall and screw surface wearing and tearing to increase.Equally, at compressing section and homogenizing zone, if the molten state of plastics is disorderly uneven, wearing and tearing also can be caused to speed.Rotating speed answers adjustment proper.Because partly plastic is added with hardening agent, as glass fibre, mineral substance or other stuffing.These materials are often more much bigger than molten plastic to the friction of metal material.When these plastics of injection moulding, if become with high rotating speed, then while improving the shearing force to plastics, also military order hardening constituent should produce more by the fiber torn up in ground, is contained sharp distal tip, make abrasive forces greatly increase by the fiber torn up.Inorganic mineral is when metal surface high speed slide, and its scraping action is not little yet.So rotating speed should not adjust get Tai Gao.Screw rod rotates in machine barrel, material and the friction of the two, and the working surface of screw rod and machine barrel is worn and torn gradually: screw diameter reduces gradually, the diameter of bore of machine barrel strengthens gradually.Like this, the fit diameter gap of screw rod and machine barrel, little by little strengthens along with the wearing and tearing gradually of the two., because the resistance of head before machine barrel and flow distribution plate does not change, this adds increased leakage current amount when being advanced by extrusion molding material, namely material increases from diametric clearance to feedstock direction amount of flow.Result makes plastic machine yielding capacity decline.This phenomenon makes again material waiting time in machine barrel increase, and causes material to decompose.If polyethylene, the hydrogen chloride gas that decomposition produces strengthens the corrosion to screw rod and machine barrel.
Current existing screw pump load when the fluid higher for viscosity is higher, easily causes bent screws, causes work not normal.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of flow trim, pressure pulsation little, have that suction capacity, noise are low, efficiency is high, the life-span is long, for the screw pump that the fluid that viscosity is higher also can normally work.
For solving the problem, the present invention adopts following technological scheme:
A kind of screw pump, comprise stator, screw rod, the pump housing and bearing support, described screw rod is located in stator, described stator arranged outside has pull bar, described stator side is provided with outlet stubs, auxiliary stand and intermediate support is provided with below described stator, described outlet stubs is fixedly connected with pull bar, described stator, the pump housing and bearing support are fixedly connected sequentially, coupling can keep main shaft operating steadily when rotating, keep flow trim, screw rod rotates in stator, form sealed chamber, pressure pulsation can be kept little, there is suction capacity, noise is low, efficiency is high, bearing and main shaft is provided with in described bearing support, described main shaft and bearing are rotationally connected, connecting rod is provided with in the described pump housing, described connecting rod two ends are respectively arranged with universal joint one and universal joint two, universal joint one on connecting rod and universal joint two can keep transmission efficiency high, reduce the loss of energy, can be effectively energy-conservation, tee union can filter effectively can filter impurity in fluid, prevent choking phenomenon to occur, described connecting rod is connected with screw rod by universal joint one, described connecting rod is connected with main shaft by universal joint two, described main shaft side is provided with coupling and motor, described motor is connected with main shaft by coupling, ceramic heat circle is provided with below the described pump housing, the heat transfer of ceramic heat circle is fast, heating evenly, working stability, effectively can reduce the viscosity of fluid, alleviate the working load of screw rod, extend the working life of screw rod.
Further, below described ceramic heat circle, be provided with frame, reduce the duty in space.
Further, described frame is fixedly connected with intermediate support with auxiliary stand respectively, keeps stator operationally structural stability.
Further, the described pump housing is provided with tee union, many pipelines can be connected.
Further, the described pump housing and bearing support joint are provided with shaft seal, can effectively seal.
Further, be provided with filter in described tee union, filter can impurity screening.
Further, described ceramic heat circle is provided with three, promotes the efficiency of heating surface.
Another technical problem that the present invention will solve is to provide a kind of using method of screw pump.
For solving the problems of the technologies described above, the present invention adopts following technological scheme: comprise the following steps:
1) when screw pump stops, first should close outlet stubs, after the complete stall of motor by the time, close tee union;
2) screw pump starts when tee union standard-sized sheet, very low in oil temperature or viscosity is very high, opens the heating of ceramic heat circle;
3), when screw pump runs, shaft sealing leakage amount, within 30 seconds/, exceedes and needs, change shaft seal.
The invention has the beneficial effects as follows: the coupling of the setting of setting can keep main shaft operating steadily when rotating, keep flow trim, screw rod rotates in stator, form sealed chamber, pressure pulsation can be kept little, there is suction capacity, noise is low, efficiency is high, the heat transfer of ceramic heat circle is fast, heating evenly, working stability, effectively can reduce the viscosity of fluid, alleviate the working load of screw rod, extend the working life of screw rod, universal joint one on connecting rod and universal joint two can keep transmission efficiency high, reduce the loss of energy, can be effectively energy-conservation, tee union can filter effectively can filter impurity in fluid, prevent choking phenomenon to occur.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural drawing of a kind of screw pump of the present invention.
Embodiment
Consult shown in Fig. 1, a kind of screw pump, comprise stator 1, screw rod 2, the pump housing 3 and bearing support 4, described screw rod 2 is located in stator 1, described stator 1 arranged outside has pull bar 5, described stator 1 side is provided with outlet stubs 6, auxiliary stand 7 and intermediate support 8 is provided with below described stator 1, described outlet stubs 6 is fixedly connected with pull bar 5, described stator 1, the pump housing 3 and bearing support 4 are fixedly connected sequentially, bearing 9 and main shaft 10 is provided with in described bearing support 4, described main shaft 10 is rotationally connected with bearing 9, connecting rod 11 is provided with in the described pump housing 3, described connecting rod 11 two ends are respectively arranged with universal joint 1 and universal joint 2 13, described connecting rod 11 is connected with screw rod 2 by universal joint 1, described connecting rod 11 is connected with main shaft 10 by universal joint 2 13, described main shaft 10 side is provided with coupling 14 and motor 15, described motor 15 is connected with main shaft 10 by coupling 14, ceramic heat circle 16 is provided with below the described pump housing 3.
Frame 17 is provided with below described ceramic heat circle 16.
Described frame 17 is fixedly connected with intermediate support 8 with auxiliary stand 7 respectively.
The described pump housing 3 is provided with tee union 18.
The described pump housing 3 is provided with shaft seal 19 with bearing support 4 joint.
Filter 20 is provided with in described tee union 18.
Described ceramic heat circle 16 is provided with three.
Another technical problem that the present invention will solve is to provide a kind of using method of screw pump.
For solving the problems of the technologies described above, the present invention adopts following technological scheme: comprise the following steps:
1) when screw pump stops, first should close outlet stubs, after the complete stall of motor 15 by the time, close tee union 18;
2) screw pump starts when tee union 18 standard-sized sheet, very low in oil temperature or viscosity is very high, opens ceramic heat circle heating 16;
3), when screw pump runs, shaft seal 19 leakage rate, within 30 seconds/, exceedes and needs, change shaft seal.
In use, starting electrical machinery 15 drives main shaft 10 to rotate by coupling 14, connecting rod 11 in the pump housing 3 drives screw rod 2 to rotate, and screw rod 2 rotates around the axis of itself, rolls again along stator inner surface simultaneously, so form sealed chamber, screw rod 2 often circles, and the liquid in Seal cage pushes ahead a pitch, along with the continuous rotation of screw rod 2, liquid spiral fashion presses to another Seal cage from a Seal cage, finally extrudes the pump housing 3
The invention has the beneficial effects as follows: the coupling of the setting of setting can keep main shaft operating steadily when rotating, keep flow trim, screw rod rotates in stator, form sealed chamber, pressure pulsation can be kept little, there is suction capacity, noise is low, efficiency is high, the heat transfer of ceramic heat circle is fast, heating evenly, working stability, effectively can reduce the viscosity of fluid, alleviate the working load of screw rod, extend the working life of screw rod, universal joint one on connecting rod and universal joint two can keep transmission efficiency high, reduce the loss of energy, can be effectively energy-conservation, tee union can filter effectively can filter impurity in fluid, prevent choking phenomenon to occur.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any change of expecting without creative work or replacement; all should be encompassed within protection scope of the present invention; therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (8)
1. a screw pump, it is characterized in that: comprise stator, screw rod, the pump housing and bearing support, described screw rod is located in stator, described stator arranged outside has pull bar, described stator side is provided with outlet stubs, auxiliary stand and intermediate support is provided with below described stator, described outlet stubs is fixedly connected with pull bar, described stator, the pump housing and bearing support are fixedly connected sequentially, bearing and main shaft is provided with in described bearing support, described main shaft and bearing are rotationally connected, connecting rod is provided with in the described pump housing, described connecting rod two ends are respectively arranged with universal joint one and universal joint two, described connecting rod is connected with screw rod by universal joint one, described connecting rod is connected with main shaft by universal joint two, described main shaft side is provided with coupling and motor, described motor is connected with main shaft by coupling, ceramic heat circle is provided with below the described pump housing.
2. screw pump according to claim 1, is characterized in that: be provided with frame below described ceramic heat circle.
3. screw pump according to claim 2, is characterized in that: described frame is fixedly connected with intermediate support with auxiliary stand respectively.
4. screw pump according to claim 3, is characterized in that: the described pump housing is provided with tee union.
5. screw pump according to claim 4, is characterized in that: the described pump housing and bearing support joint are provided with shaft seal.
6. screw pump according to claim 5, is characterized in that: be provided with filter in described tee union.
7. screw pump according to claim 6, is characterized in that: described ceramic heat circle is provided with three.
8. a using method for screw pump, is characterized in that: comprise the following steps:
1) when screw pump stops, first should close outlet stubs, after the complete stall of motor by the time, close tee union;
2) screw pump starts when tee union standard-sized sheet, very low in oil temperature or viscosity is very high, opens the heating of ceramic heat circle;
3), when screw pump runs, shaft sealing leakage amount, within 30 seconds/, exceedes and needs, change shaft seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510332738.2A CN104912811A (en) | 2015-06-16 | 2015-06-16 | Screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510332738.2A CN104912811A (en) | 2015-06-16 | 2015-06-16 | Screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104912811A true CN104912811A (en) | 2015-09-16 |
Family
ID=54082175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510332738.2A Pending CN104912811A (en) | 2015-06-16 | 2015-06-16 | Screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104912811A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570122A (en) * | 2016-02-22 | 2016-05-11 | 太仓液压元件有限公司 | High-rotation-speed screw pump |
| CN108547772A (en) * | 2018-05-29 | 2018-09-18 | 北京恒信卓元科技有限公司 | More casings with High-Field journey splice helicoidal pump |
| CN111659539A (en) * | 2020-07-03 | 2020-09-15 | 苏州寰宇新博环保设备工程有限公司 | Three-phase centrifuge oil extraction device for kitchen waste treatment system |
-
2015
- 2015-06-16 CN CN201510332738.2A patent/CN104912811A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570122A (en) * | 2016-02-22 | 2016-05-11 | 太仓液压元件有限公司 | High-rotation-speed screw pump |
| CN108547772A (en) * | 2018-05-29 | 2018-09-18 | 北京恒信卓元科技有限公司 | More casings with High-Field journey splice helicoidal pump |
| CN108547772B (en) * | 2018-05-29 | 2020-06-19 | 宋海波 | Multi-sleeve spliced screw pump with high lift |
| CN111659539A (en) * | 2020-07-03 | 2020-09-15 | 苏州寰宇新博环保设备工程有限公司 | Three-phase centrifuge oil extraction device for kitchen waste treatment system |
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Application publication date: 20150916 |
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| RJ01 | Rejection of invention patent application after publication |