CN107288876A - Block-resistant type pumping installations - Google Patents

Abstract

The invention discloses a kind of block-resistant type pumping installations, its drip irrigation device is to include screw pump and the filter mechanism installed in screw pump arrival end, screw pump includes pump case and screw arbor assembly, the filter mechanism includes shell, fixed support inside the housing, the filter assemblies for being set on support and rotating corresponding thereto, screw arbor assembly drives filter assemblies to rotate by gear drive, with being connected inside pump case inside filter assemblies, it is provided with the side wall of shell along generatrix direction on import, shell and is located at import both sides provided with to the scraper plate to filter assemblies.The present invention solves the problem of existing screw pump in oil containing impurity because resulting in blockage.

Description

Block-resistant type pumping installations

Technical field

The present invention relates to hydraulic test, in particular, it is related to a kind of block-resistant type pumping installations.

Background technology

Screw pump is volume type rotor pump, and it is to change to suck by the volume of the annular seal space formed by screw and bushing With discharge liquid.Screw pump by screw rod number be divided into single-screw (single screw) pump, it is double, three and five-screw pump.The characteristics of screw pump is flow Steadily, pressure fluctuation is small, have low suction capacity, noise, efficiency high, long lifespan, reliable operation；And its advantage protruded is conveying Vortex is not formed during medium, to the sticky insensitive of medium, can transfer of highly viscous medium.

Intermeshing and screw rod and the tight fit of lining inwall due to each screw rod, in the suction inlet and outlet of pump Between, one or more sealing spaces will be divided into.With the rotation and engagement of screw rod, suction of these sealing spaces in pump Enter end constantly to be formed, liquid-filled in suction chamber wherein and continuously elapsed to outlet side axially along a screw from suction chamber, The liquid that would be enclosed in each space is constantly discharged, the situation constantly pushed ahead in thread-whirling just as a nut that Sample, wherein thread turns regard liquid as, and screw thread is equivalent to feelings of the liquid inside screw pump when rotating when the screw is rotated Shape, here it is the basic functional principle of screw pump.

Authorization Notice No. discloses a kind of vertical hanging type three screw pump unit for CN203686540U utility model patent, wraps Include vertical outstanding three screw pump, motor, connection component, shaft coupling, jackshaft and the blow-off pipe set, three screw pump lower end be provided with The vertical pump inlet of fuel tank oil level, upper end is connected by connection component and jackshaft, shaft coupling and motor, and three screw pump goes out Mouth is connected with bite type butt joint by blow-off pipe；Connection component is made up of frame plate and link, and shaft coupling uses cydariform Equipped with the protective cover for being provided with window thereon on gear coupling, link.The utility model can be used for petrol station system, low-tension pulse Dynamic, low noise, No leakage and safe and reliable, pump inlet immerses fluid using vertical orientations, but has the following disadvantages, and contains in oil During impurity, impurity can enter in screw pump with oil, and long-term use impurity, which can be accumulated in screw pump, to result in blockage, influence oil Conveying.

The content of the invention

In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of block-resistant type pumping installations, in pump Suction inlet is filtered to oil, it is to avoid blocked.

To achieve the above object, the invention provides following technical scheme：A kind of block-resistant type pumping installations, including screw pump With the filter mechanism installed in screw pump arrival end, screw pump include pump case and screw arbor assembly, the filter mechanism include shell, Fixed support inside the housing, the filter assemblies for being set on support and rotating corresponding thereto, screw arbor assembly are passed by gear Dynamic driving filter assemblies are rotated, and are connected inside filter assemblies with pump case inside, on the side wall of shell along generatrix direction be provided with into Mouthful, import both sides are located on shell and are provided with to the scraper plate to filter assemblies.

By using above-mentioned technical proposal, produce suction during screw rod pump work, oil by filter assemblies by screw arbor assembly from One end is transported to the other end, the impurity in oil is blocked in outside filter assemblies, it is to avoid impurity is stockpiled in screw pump causes blocking. Meanwhile, filter assemblies are rotated in the presence of screw arbor assembly, and the scraper plate on shell is moved with respect to filter assemblies and by filter assemblies The impurity on surface is scraped off, the permeability for keeping filter assemblies good, it is to avoid oily enters flow-reduction.

The present invention is further arranged to：The screw arbor assembly includes driving screw, and the end of driving screw is coaxially fixed with actively Rotated coaxially on gear, shell by power transmission shaft and be connected with driven gear, driven gear is engaged with driving gear, filter assemblies with Power transmission shaft is fixedly connected.

By using above-mentioned technical proposal, drive driving gear to rotate when driving screw is rotated, engaged with driving gear from Moving gear is rotated, and the filter assemblies being fixedly connected with driven gear by rotary shaft are rotated, and are made full use of the power of driving screw, are kept away Exempt to set drive mechanism in addition so that structure is compacter.

The present invention is further arranged to：Two retainer rings that the support includes be arrangeding in parallel, two retainer rings of connection Two dividing plates and along the axially arranged sleeve pipe of retainer ring, dividing plate is fixedly connected close to one end of screw pump with shell, and power transmission shaft is worn Cross sleeve pipe and relatively rotate.

By using above-mentioned technical proposal, when power transmission shaft drives filter assemblies rotation, support can be remained stationary as.

The present invention is further arranged to：The filter assemblies include rotating the support ring being connected with retainer ring, are fixed on branch Screen pack on pushing out ring.

By using above-mentioned technical proposal, screen pack is supported by support ring, reduce depression possibility, improve screen pack with Compactness between scraper plate, such scraper plate strikes off cleaner to the impurity for filtering net surface.

The present invention is further arranged to：The pump case is provided with outflow port, and outflow port is fixed with output precision, output precision Including the discharging tube connected with outflow port.

By using above-mentioned technical proposal, oil is discharged after screw pump from outflow port, and the oil of discharge is along discharging tube stream To precalculated position, the conveying of oil is completed.

The present invention is further arranged to：The dividing plate will be divided into suction passage and discharge runner inside screen pack, in shell Upper one end close to screw pump is provided with through hole and via, and suction passage inside pump case by through hole with connecting, and discharge runner passes through Branch pipe is connected with discharging tube, and correspondence discharge flow passage area is provided with strip mouthful along generatrix direction on shell.

By using above-mentioned technical proposal, oil is entered after filter assemblies from suction passage influent stream, is discharged from discharging tube An oily part flows to discharge runner from branch pipe, and then oil flows out through screen pack from strip mouthful, and oil will be attached to the net of screen pack Minute impurities on eye are taken out of, keep the permeability of screen pack.

The present invention is further arranged to：The driving screw is externally provided with inside by shaft coupling and motor connection, shaft coupling Empty protective cover, protective cover provided with perforation, pump case be provided with the corresponding screwed hole of perforation, pump case is with protective cover by wearing Coordinate in the bolt in perforation and screwed hole and fix.

By using above-mentioned technical proposal, shaft coupling is protected by protective cover, and pump case is saved with protective cover compared with traditional approach Flange connection has been gone, has installed more convenient.

The present invention is further arranged to：The screw arbor assembly also includes one or two sub-screw engaged with driving screw.

By using above-mentioned technical proposal, the feed flow increase of screw pump, with suction capacity is strong, suction head is strong Advantage.

The present invention is further arranged to：The opening end of the protective cover is fixed with the fixed plate of annular, and fixed plate is provided with Mounting hole, discharging tube is connected with mounting hole flange, and connecting tube is connected with another side flange of mounting hole.

By using above-mentioned technical proposal, the position of discharging tube can be fixed in advance, only need to install connecting tube when using, It is easy to onsite application.

In summary, the present invention has the advantages that compared to prior art：1. filter mechanism is to miscellaneous in fluid Matter is filtered, it is to avoid impurity results in blockage into screw pump, improves working life；2. filter assemblies keep rotary state, scrape Plate strikes off the large granular impurity for filtering net surface, and reducing impurity may in screen pack surface sediment；3. flowed out from branch pipe Oil is discharged after screen pack from strip mouthful, and screen pack is cleaned using a small amount of oil, the permeability of screen pack is improved.

Brief description of the drawings

Fig. 1 is that embodiment shows discharging tube and the axonometric drawing of pump case attachment structure；

Fig. 2 is the axonometric drawing that embodiment shows filter mechanism import and protective cover and fixed board connecting structure；

Fig. 3 is that embodiment shows filter mechanism and the sectional view of screw pump junction internal structure；

Fig. 4 is the explosive view that embodiment shows screw pump internal structure；

Fig. 5 is that embodiment shows protective cover and the explosive view of pump case attachment structure；

Fig. 6 is the axonometric drawing of filter mechanism in embodiment；

Fig. 7 is to show the explosive view of filter mechanism internal structure in embodiment；

Fig. 8 for rotating shaft and shell in display filter mechanism and filter assemblies attachment structure A portions in figure 3 enlarged drawing；

Fig. 9 for the B portions in figure 3 of filter assemblies and holder pivots attachment structure in display filter mechanism enlarged drawing；

Figure 10 for the fixation ring structure C portions in the figure 7 of display support enlarged drawing；

Figure 11 is the transverse sectional view of display filter mechanism inner flow passage distributed architecture.

In figure：1st, motor；11st, output shaft；2nd, protective cover；21st, fixed plate；22nd, axis hole；23rd, perforate；24th, mounting hole；3、 Screw pump；31st, pump case；311st, accommodating chamber；312nd, outflow port；313rd, rise as high as the banks；314th, screwed hole；32nd, screw arbor assembly；321st, main spiral shell Bar；3211st, raised line；322nd, sub-screw；3221st, groove；33rd, driving gear；34th, gear-box；4th, filter mechanism；41st, shell； 411st, import；412nd, through hole；413rd, via；414th, scraper plate；415th, strip mouthful；42nd, support；421st, retainer ring；4211st, it is sliding Groove；422nd, sleeve pipe；423rd, dividing plate；43rd, filter assemblies；431st, support ring；432nd, screen pack；4321st, suction passage；4322nd, arrange Go out runner；433rd, end plate；4331st, sliding block；44th, driven gear；441st, power transmission shaft；5th, output precision；51st, discharging tube；511st, bottom Seat；52nd, connecting tube；53rd, branch pipe；6th, shaft coupling.

Embodiment

The present invention is described in further detail below in conjunction with the accompanying drawings.

Wherein identical parts are presented with like reference characters.It should be noted that the word used below in description Language "front", "rear", "left", "right", "up" and "down" refer to the direction in accompanying drawing 1, word " bottom surface " and " top surface ", " interior " and " outer " is referred respectively to towards or away from the direction of particular elements geometric center.

Embodiment：

Block-resistant type pumping installations, as depicted in figs. 1 and 2, including is sequentially connected motor 1, protective cover 2, screw pump 3 and the mistake of setting Filter structure 4, filter mechanism 4 is arranged on the influent stream end of screw pump 3, and going out to flow end in screw pump 3 is connected with output precision 5, the work of motor 1 Screw pump 3 is driven to work when making, oil is entered in screw pump 3 by the filtering of filter mechanism 4, is then conveyed from output precision 5 To specified location.

Referring to figs. 2 and 3 protective cover 2 is inner hollow, the cylindrical housings of open at one end, in the opening one of protective cover 2 End is connected with the fixed plate 21 of annular, and motor 1 is bolted with fixed plate 21.It is remote in protective cover 2 with reference to Fig. 4 and Fig. 5 Axis hole 22 is provided with the axis of open one end, some perforation 23 is uniformly provided with around axis hole 22, is provided with the edge of fixed plate 21 Mounting hole 24.

Referring to figs. 2 and 3 screw pump 3 includes pump case 31 and the screw arbor assembly 32 inside pump case 31.In pump case 31 Portion is along its axis direction provided with the accommodating chamber 311 for installing screw arbor assembly 32, the open at both ends of accommodating chamber 311.Pump case 31 is close to anti- One end of shield 2 is provided with outflow port 312, and outflow port 312 is connected with accommodating chamber 311.With reference to Fig. 4 and Fig. 5, in the outer wall of pump case 31 position In the position of outflow port 312 provided with rising as high as the banks 313.Some screwed holes 314, screw thread are provided with the end face of protective cover 2 in pump case 31 Hole 314 is corresponded with perforation 23, and pump case 31 is bolted with protective cover 2, and bolt passes through perforation 23 from the inside of protective cover 2 It is threadedly coupled with screwed hole 314.

With reference to Fig. 3 and Fig. 4, screw arbor assembly 32 includes driving screw 321 and two sub-screws 322, and the surface of driving screw 321 is set There is spiral raised line 3211, sub-screw 322 is provided with the groove 3211 on spiral groove 3211, two sub-screws 322 The hand of spiral on the contrary, driving screw 321 is engaged respectively with two sub-screws 322.As needed, screw arbor assembly 32 can also be single Screw rod or twin-screw are set.

Driving screw 321 is connected through axis hole 22 with the output shaft 11 of motor 1 by shaft coupling 6, driving screw 321 and pump case 31 Rotated and connected by bearing, accommodating chamber 311 is sealed at bearing by seal.When so motor 1 works, output shaft 11 is rotated And power is delivered to driving screw 321 by shaft coupling 6, driving screw 321 is rotated, two sub-screws 322 engaged with driving screw 321 Rotate, oil is inhaled into accommodating chamber 311 from one end, then oil is forced into outflow port 312 in the presence of screw arbor assembly 32 Put and be discharged.

With reference to Fig. 4 and Fig. 5, discharging tube 51 that output precision 5 includes being connected with outflow port 312, it is connected with discharging tube 51 Connecting tube 52 and the branch pipe 53 for being arranged on discharging tube 51, one end of branch pipe 53 are connected with discharging tube 51, the other end and filter mechanism 4 Connection.

It has been wholely set base 511 in the bottom of discharging tube 51, base 511 313 is adapted with rising as high as the banks on pump case 31, this Sample base 511 can be brought into close contact with pump case 31.Base 511 is bolted to connection with pump case 31, and base 511 is with rising as high as the banks 313 contact surfaces are sealed by sealing gasket.

The other end of discharging tube 51 is connected with the mounting hole 24 in fixed plate 21 by flange, one end of connecting tube 52 and peace Dress hole 24 is connected by flange, and the other end is connected with external container, so from the oil of the extrusion of outflow port 312 from discharging tube 51 and even Adapter 52 is transported to precalculated position.

With reference to Fig. 3 and Fig. 4, driving gear 33 is coaxially fixed with the end of driving screw 31, pump case 31 is close to filter mechanism 4 One end be fixedly connected with annular gear-box 34.With reference to Fig. 5, filter mechanism 4 include be fixedly connected with pump case 31 shell 41, Support 42 inside shell 41, the filter assemblies 43 for being coated on the outside of support 42 and axially rotate installed in shell Driven gear 44 outside 41, driven gear 44 is engaged with driving gear 33, and the outline diameter of shell 41 is more than the straight of pump case 31 Footpath.

With reference to Fig. 6 and Fig. 7, shell 41 is in the cylinder for inner hollow, is made preferably with stainless steel.The side of shell 41 Wall is provided with the import 411 of rectangle along generatrix direction, and the radian value of import 411 is preferably not below pi/2, to provide sufficiently large influent stream Amount.Through hole 412 and via 413 are provided with close to one end of driven gear 44 in shell 41, through hole 412 and via 413 are located at diameter Two ends.With reference to Fig. 4 and Fig. 7, via 413 is connected with branch pipe 53.

Support 42 includes two retainer rings 421 be arrangeding in parallel, two dividing plates 423 for connecting two retainer rings 421 and edge The axially arranged sleeve pipe 422 of retainer ring 421.Driven gear 44 is rotated with shell 41 by power transmission shaft 441 and is connected, power transmission shaft 441 Through sleeve pipe 422 and relatively rotate.

Filter assemblies 43 include the support ring 431 and screen pack 432, the two ends of screen pack 432 and branch being connected with support 42 Pushing out ring 431 is fixedly connected.Screen pack 432 can be stainless steel cloth, and mesh number is more preferably greater than 200 mesh.In order to reduce screen pack 432 The possibility of central region sinking, screen pack 432 inwall along its generatrix direction be provided with support bar, the two ends of support bar and support ring 431 fix.

With reference to Fig. 7 and Fig. 8, the end of power transmission shaft 441 is rotated by bearing with shell 41 and is connected, screen pack 432 it is another End is fixedly connected by end plate 433 with power transmission shaft 441.With reference to Fig. 9 and Figure 10, circumferentially arranged with chute in retainer ring 421 4211, end plate 433 is provided with the sliding block 4331 being adapted with chute 4211, and sliding block 4321 is rotated with the Relative sliding of chute 4211. In order to prevent end plate 433 from being separated with retainer ring 421, the cross section of chute 4211 is in interior big outer small shape such as T-shaped.So work as biography When moving axis 441 is rotated, power transmission shaft 441 drives the end plate 4331 for being secured to connection to rotate, and is fixed on the filtering on end plate 4331 Net 432 is rotated.

With reference to Figure 11, two dividing plates 423 are fixed on shell 41 close to one end of through hole 412, and two dividing plates 423 will be filtered Cavity inside net 432 is divided into two regions：The region connected with through hole 412 is suction passage 4321, is connected with via 413 Region is discharge runner 4322.So outside oil from import 411 enter by screen pack 432 in suction passage 4321 when, Impurity is blocked in outside screen pack 432.In order to remove the impurity on screen pack 432 in time, positioned at import 411 on shell 41 Both sides are fixed with scraper plate 414, and when such screen pack 432 is rotated, scraper plate 414 can scrape off partial impurities.On the top edge of shell 1 Generatrix direction is provided with strip mouthful 415 so that discharge runner 4322 and ft connection.

The working method of the block-resistant type pumping installations is as follows：

Filter mechanism 4 is entered in fluid together with screw pump 3 when using, starts motor 1, the task driven screw rod of motor 1 Pump 3 works.The suction passage 4321 that oil is entered inside filter mechanism 4 from import 411, impurity is blocked in outside screen pack 432. Clean oily via through holes 412 enter gear-box 34, are then drawn into screw pump 3, and clean oil flows out from discharging tube 51.

The driving screw 31 of screw pump 3 drives driving gear 33 to rotate during rotation, is engaged with driving gear 33 Driven gear 44 is rotated.Rotated with the filter assemblies 43 that driven gear 44 is fixedly connected by power transmission shaft 441.Scraper plate 414 was incited somebody to action Large granular impurity on filter screen 432 is scraped off, and the mesh that short grained impurity is attached to screen pack 432 is relayed to the opposite side of shell 41, The screen pack 432 not being plugged in shell 41 is produced at import 411 simultaneously, keeps oil-feed smooth.

A part of oil enters discharge runner 4322 from branch pipe 53, and oil is by screen pack 432 from the strip mouthful of shell 41 415 outflows, the oil of outflow takes the fine impurities being attached on the mesh of screen pack 432 out of, and cleaning effect is played to screen pack 432.

Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (9)

1. a kind of block-resistant type pumping installations, including screw pump (3) and the filter mechanism (4) installed in screw pump (3) arrival end, spiral shell Bar pump (3) includes pump case (31) and screw arbor assembly (32), it is characterised in that：The filter mechanism (4) includes shell (41), fixed In the internal support (42) of shell (41), it is set in the filter assemblies (43) that rotate on support (42) and corresponding thereto, screw rod group Part (32) drives filter assemblies (43) to rotate by gear drive, and filter assemblies (43) are internal with being connected inside pump case (31), It is provided with import (411), shell (41) to be provided with positioned at import (411) both sides along generatrix direction on the side wall of shell (41) and supports to mistake Filter the scraper plate (414) of component (43).

2. block-resistant type pumping installations according to claim 1, it is characterised in that：The screw arbor assembly (32) includes driving screw (321), the end of driving screw (321) is coaxially fixed with driving gear (33), shell (41) is coaxially turned by power transmission shaft (441) Dynamic to be connected with driven gear (44), driven gear (44) is engaged with driving gear (33), filter assemblies (43) and power transmission shaft (441) It is fixedly connected.

3. block-resistant type pumping installations according to claim 2, it is characterised in that：The support (42) includes what is be arranged in parallel Two retainer rings (421), two dividing plates (423) of two retainer rings (421) of connection and along the axially arranged set of retainer ring (421) Manage (422), dividing plate (423) is fixedly connected close to one end of screw pump (3) with shell (41), power transmission shaft (441) passes through sleeve pipe (422) and relatively rotate.

4. block-resistant type pumping installations according to claim 3, it is characterised in that：The filter assemblies (43) include and fixation Ring (421) rotates the support ring (431) connected, the screen pack (432) being fixed in support ring (431).

5. block-resistant type pumping installations according to claim 4, it is characterised in that：The pump case (31) is provided with outflow port (312), outflow port (312) is fixed with output precision (5), and output precision (5) includes the discharging tube connected with outflow port (312) (51)。

6. block-resistant type pumping installations according to claim 5, it is characterised in that：The dividing plate (423) is by screen pack (432) Inside is divided into suction passage (4321) and discharge runner (4322), close to one end of screw pump (3) provided with logical on shell (41) Hole (412) and via (413), suction passage (4321) with being connected inside pump case (31), discharge runner by through hole (412) (4322) connected by branch pipe (53) with discharging tube (51), correspondence discharges runner (4322) region along generatrix direction on shell (41) Provided with strip mouthful (415).

7. block-resistant type pumping installations according to claim 6, it is characterised in that：The driving screw (321) passes through shaft coupling (6) it is connected with motor (1), shaft coupling (6) is externally provided with the protective cover (2) of inner hollow, protective cover (2) is provided with perforation (23), Pump case (31) is provided with screwed hole (314) corresponding with perforation (23), and pump case (31) is with protective cover (2) by being arranged in perforation (23) bolt on coordinates with screwed hole (314) to be fixed.

8. block-resistant type pumping installations according to claim 2, it is characterised in that：The screw arbor assembly (32) also includes one Or two sub-screws (322) engaged with driving screw (321).

9. block-resistant type pumping installations according to claim 7, it is characterised in that：The opening end of the protective cover (2) is fixed There is the fixed plate (21) of annular, fixed plate (21) is provided with mounting hole (24), and discharging tube (51) is connected with mounting hole (24) flange, Connecting tube (52) is connected with another side flange of mounting hole (24).