CN205135986U - Backward flow formula material feeding unit - Google Patents
Backward flow formula material feeding unit Download PDFInfo
- Publication number
- CN205135986U CN205135986U CN201520942678.1U CN201520942678U CN205135986U CN 205135986 U CN205135986 U CN 205135986U CN 201520942678 U CN201520942678 U CN 201520942678U CN 205135986 U CN205135986 U CN 205135986U
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- CN
- China
- Prior art keywords
- screw pump
- pipe
- way pipe
- charging
- flow type
- 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.)
- Expired - Fee Related
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses a backward flow formula material feeding unit, including screw pump, feeding three -way pipe and back flow, the feeding three -way pipe is fixed in the feed end of the stator of screw pump and communicates with each other with the inner chamber of stator, the back flow is connected the material that makes the screw pump discharge end between the discharge end of screw pump and feeding three -way pipe and can be followed in the back flow inflow feeding three -way pipe, the utility model discloses a backward flow formula material feeding unit is equipped with the back flow, when the discharge end pressure of screw pump surpasss the settlement scope, can automatic pressure release, and realize self -protection, avoid the screw pump because of too big damages of internal pressure, prolong the life of the pump body, ensuring safety production.
Description
Technical field
The utility model relates to a kind of return flow type feeder.
Background technique
Screw pump is widely used as feeder, screw pump is volume type rotor pump, it relies on the volume-variation of the Seal cage of rotor and stator formation suck and discharge material, have flow trim, pressure pulsation little, have the advantages such as suction capacity, noise are low, efficiency is high, the life-span is long, reliable operation, and do not form eddy current during fed sheet of a media, insensitive to the viscosity of medium, can transfer of highly viscous medium, existingly in the conveying of the materials such as emulsion to apply.
The safety measure imperfection of current screw pump, easily damages when output end pressure is excessive, even causes security incident.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of return flow type feeder, when the discharge end pressure of screw pump exceeds setting range; energy releasing pressure automatically, teaching display stand is protected, and avoids screw pump to damage because internal pressure is excessive; extend the working life of the pump housing, guarantee safe production.
Return flow type feeder of the present utility model, comprises screw pump, charging three-way pipe and reflow pipe; Described charging three-way pipe is fixed on the feed end of the stator of screw pump and communicates with the inner chamber of stator; The material that described reflow pipe is connected to the discharge end of screw pump and the chien shih screw pump discharge end of charging three-way pipe can flow in charging three-way pipe along reflow pipe.
Further, described reflow pipe is provided with pressure controlled valve.
Further, the discharge end being fixed on stator is also comprised and the outlet pipe nipple communicated with the inner chamber of stator.
Further, described reflow pipe is connected to the discharge end of screw pump by outlet pipe nipple.
Further, also comprise and being located in charging three-way pipe and the transmission device be in transmission connection with the rotor of screw pump.
Further, described transmission device is universal joint.
Further, described universal joint comprises driving axle housing, driven shaft sleeve and transmission shaft; The two ends of described transmission shaft are by radial setting and orthogonal two bearing pins are rotationally connected with driving axle housing and driven shaft sleeve; The rotor of described screw pump is coaxially fixedly connected with driven shaft sleeve.
Further, bracket and drive unit is also comprised; The corresponding driving axle housing of described bracket is fixed on a mouth of pipe place of charging three-way pipe; Described drive unit is fixed on bracket, and the pto＝power take-off of drive unit is coaxially fixedly connected with driving axle housing and and adopts mechanical seal between charging three-way pipe.
Further, outlet legs and base is also comprised; Described outlet legs and bracket are all fixed on base; The discharge end of the stator of described screw pump is fixed on outlet legs.
The beneficial effects of the utility model are: return flow type feeder of the present utility model; be provided with reflow pipe; when the discharge end pressure of screw pump exceeds setting range; energy releasing pressure automatically; teaching display stand is protected; avoid screw pump to damage because internal pressure is excessive, extend the working life of the pump housing, guarantee safe production.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, as shown in the figure: the return flow type feeder of the present embodiment, comprises screw pump 1, charging three-way pipe 2 and reflow pipe 3; Described charging three-way pipe 2 is fixed on the feed end of the stator 4 of screw pump 1 and communicates with the inner chamber of stator 4; The material that described reflow pipe 3 is connected to the discharge end of screw pump 1 and chien shih screw pump 1 discharge end of charging three-way pipe 2 can flow in charging three-way pipe 2 along reflow pipe 3; when the discharge end pressure of screw pump 1 exceeds setting range; energy releasing pressure automatically; teaching display stand is protected; screw pump 1 is avoided to damage because internal pressure is excessive; extend the working life of the pump housing, guarantee safe production.
In the present embodiment, described reflow pipe 3 is provided with pressure controlled valve 6; Controlled the break-make of reflow pipe 3 by pressure controlled valve 6, when the discharge end pressure of screw pump 1 exceeds setting range, pressure controlled valve 6 is opened automatically, and energy releasing pressure automatically, teaching display stand is protected.
In the present embodiment, also comprise the discharge end being fixed on stator 4 and the outlet pipe nipple 7 communicated with the inner chamber of stator 4; Outlet pipe nipple 7 is tapered tube configuration, namely exports pipe nipple 7 internal diameter and diminishes gradually along Flow of Goods and Materials direction, can increase the flow velocity of outlet pipe nipple 7 outlet port material, be beneficial to the conveying of material.
In the present embodiment, described reflow pipe 3 is connected to the discharge end of screw pump 1 by outlet pipe nipple 7; Being convenient to reflow pipe 3 and the connection of screw pump 1, without the need to offering linkage structure on screw pump 1 stator 4, not damaging screw pump 1.
In the present embodiment, also comprise and being located in charging three-way pipe 2 and the transmission device be in transmission connection with the rotor 5 of screw pump 1, space utilization is reasonable, compact structure, also charging three-way pipe 2 pairs of transmission devices can be utilized effectively to protect simultaneously, reduce the rate of fault of transmission device, increase the service life.
In the present embodiment, described transmission device is universal joint; Applicability is good, less demanding to assembly precision, is beneficial to cost-saving, transmission of power stable performance, is beneficial to pump housing long-term stability and runs.
In the present embodiment, described universal joint comprises driving axle housing 8, driven shaft sleeve 9 and transmission shaft 10; The two ends of described transmission shaft 10 are by radial setting and orthogonal two bearing pins are rotationally connected with driving axle housing 8 and driven shaft sleeve 9; The rotor 5 of described screw pump 1 is coaxially fixedly connected with driven shaft sleeve 9; The non-bearing surface in the hole of the corresponding bearing pin of transmission shaft 10 extends out gradually from the middle two ends to hole, transmission shaft 10 can be swung by a small margin along in the plane at itself and bearing pin place, can better adapt to not to the operating mode of the heart, reduce internal intervention, improve transmission effect, reduce rate of fault and noise, ensure universal joint safe operation; Driving axle housing 8 and driven shaft sleeve 9 are all set with the setting sleeve for positioning corresponding bearing pin; Two end faces of bearing pin are the arc shaped surface matched with the cylindrical of corresponding driving axle housing 8 or driven shaft sleeve 9, axially locating can not only be carried out to bearing pin after setting sleeve is installed, also can utilize and coordinate the location realized bearing pin sense of rotation between pin roll end face with setting sleeve inwall, improve bearing pin positioning precision, reduce wearing and tearing and noise.
In the present embodiment, also comprise bracket 11 and drive unit; The corresponding driving axle housing 8 of described bracket 11 is fixed on a mouth of pipe place of charging three-way pipe 2; Described drive unit is fixed on bracket 11, the pto＝power take-off of drive unit be coaxially fixedly connected with driving axle housing 8 and and adopt mechanical seal between charging three-way pipe 2; Drive unit comprises motor and speed reducer, and using the output shaft of speed reducer as the pto＝power take-off of drive unit, speed reducer is fixed on bracket 11, and motor and speed reducer are fixed as one.
In the present embodiment, also comprise outlet legs 12 and base 13; Described outlet legs 12 and bracket 11 are all fixed on base 13; The discharge end of the stator 4 of described screw pump 1 is fixed on outlet legs 12, good integrity, structural stability.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. a return flow type feeder, is characterized in that: comprise screw pump, charging three-way pipe and reflow pipe; Described charging three-way pipe is fixed on the feed end of the stator of screw pump and communicates with the inner chamber of stator; The material that described reflow pipe is connected to the discharge end of screw pump and the chien shih screw pump discharge end of charging three-way pipe can flow in charging three-way pipe along reflow pipe.
2. return flow type feeder according to claim 1, is characterized in that: described reflow pipe is provided with pressure controlled valve.
3. return flow type feeder according to claim 1, is characterized in that: also comprise the discharge end being fixed on stator and the outlet pipe nipple communicated with the inner chamber of stator.
4. return flow type feeder according to claim 3, is characterized in that: described reflow pipe is connected to the discharge end of screw pump by outlet pipe nipple.
5. return flow type feeder according to claim 1, is characterized in that: also comprise and being located in charging three-way pipe and the transmission device be in transmission connection with the rotor of screw pump.
6. return flow type feeder according to claim 5, is characterized in that: described transmission device is universal joint.
7. return flow type feeder according to claim 6, is characterized in that: described universal joint comprises driving axle housing, driven shaft sleeve and transmission shaft; The two ends of described transmission shaft are by radial setting and orthogonal two bearing pins are rotationally connected with driving axle housing and driven shaft sleeve; The rotor of described screw pump is coaxially fixedly connected with driven shaft sleeve.
8. return flow type feeder according to claim 7, is characterized in that: also comprise bracket and drive unit; The corresponding driving axle housing of described bracket is fixed on a mouth of pipe place of charging three-way pipe; Described drive unit is fixed on bracket, and the pto＝power take-off of drive unit is coaxially fixedly connected with driving axle housing and and adopts mechanical seal between charging three-way pipe.
9. return flow type feeder according to claim 8, is characterized in that: also comprise outlet legs and base; Described outlet legs and bracket are all fixed on base; The discharge end of the stator of described screw pump is fixed on outlet legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520942678.1U CN205135986U (en) | 2015-11-23 | 2015-11-23 | Backward flow formula material feeding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520942678.1U CN205135986U (en) | 2015-11-23 | 2015-11-23 | Backward flow formula material feeding unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205135986U true CN205135986U (en) | 2016-04-06 |
Family
ID=55621785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520942678.1U Expired - Fee Related CN205135986U (en) | 2015-11-23 | 2015-11-23 | Backward flow formula material feeding unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205135986U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139471A (en) * | 2018-09-03 | 2019-01-04 | 东北大学 | A kind of horizontal rotors for dry double-screw vacuum pump having over-voltage degassing function |
| CN113007090A (en) * | 2021-02-22 | 2021-06-22 | 义乌市水处理有限责任公司 | Sludge screw pump protection device |
-
2015
- 2015-11-23 CN CN201520942678.1U patent/CN205135986U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139471A (en) * | 2018-09-03 | 2019-01-04 | 东北大学 | A kind of horizontal rotors for dry double-screw vacuum pump having over-voltage degassing function |
| CN109139471B (en) * | 2018-09-03 | 2019-07-02 | 东北大学 | A kind of horizontal rotors for dry double-screw vacuum pump having over-voltage degassing function |
| CN113007090A (en) * | 2021-02-22 | 2021-06-22 | 义乌市水处理有限责任公司 | Sludge screw pump protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20171123 |