CN207242988U - A kind of Pneumatic conveyer of granular material - Google Patents

Abstract

The utility model discloses a kind of Pneumatic conveyer of granular material, aim to solve the problem that dust blocking easily occurs in traditional conveying device, the problem of blowback, a kind of its key points of the technical solution are that Pneumatic conveyer of granular material, including storage bin, feed arrangement is provided with above the storage bin, the agitating device for preventing powder from luming is provided with the storage bin, the storage bin bottom is provided with discharging mechanism, the discharging mechanism includes the Pneumatic Conveying Mechanism for being communicated in the discharging bin of storage bin bottom and being connected with discharging bin, the dust discharge component for the airborne dust in storage bin to be extracted out is provided between the storage bin and discharging bin.A kind of Pneumatic conveyer of granular material of the utility model, the path of continuous conveying free of discontinuities cause feeding efficiency higher, and the stirring to powder evenly, and reduces the airborne dust in storage bin, it can be achieved that dustlessization operates while blanking.

Description

A kind of Pneumatic conveyer of granular material

Technical field

Granular material transportation art is the utility model is related to, more specifically, it relates to a kind of pneumatic transporting of granular material Send device.

Background technology

Present granular material mode of movement includes suction and conveying formula, pressure sending type, hybrid and four kinds of forms of fluid delivery type, works as conveying During gas in pipelines pressure subatmospheric power, become suction and conveying formula Geldart-D particle, after wind turbine starts, reach certain in pipeline During vacuum, air in air is portable to enter pipeline with material by suction nozzle, and material is transported to point of delivery end along pipeline From device, in the separator, material and air separation, the material isolated is drawn off by separator bottom, and air passes through deduster It is discharged into after dedusting through wind turbine in air, for general conveying device there are complicated, transfer efficiency is low, dust easily occurs and blocks up Plug, blowback, feed the problem of not smooth and leakage.

In view of the above-mentioned problems, a kind of powder conveying apparatus disclosed in the Chinese patent of Publication No. CN105752689, By the way that discharge nozzle is arranged in barrel, and hydraulic device is additionally provided with for depressing powder in barrel, improve conveying Efficiency, solves and the problems such as dust blocking, blowback easily occurs.The utility model provides a kind of new technical solution to solve The above problem.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of Geldart-D particle of granular material Device, has the advantages of blanking is smooth, reduction dust pollution.

The above-mentioned technical purpose of the utility model technical scheme is that：A kind of gas of granular material Power conveying device, including storage bin, the storage bin top are provided with feed arrangement, are provided with the storage bin for preventing The agitating device of powder caking, the storage bin bottom are provided with discharging mechanism, and the discharging mechanism includes being communicated in storage bin The discharging bin of bottom and the Pneumatic Conveying Mechanism connected with discharging bin, are provided between the storage bin and discharging bin for inciting somebody to action The dust discharge component of airborne dust extraction in storage bin.

By using above-mentioned technical proposal, powder delivers into storage bin by feed arrangement, passes through the stirring in storage bin Device is while be stirred, while the powder for stirring completion is sent to downwards discharging mechanism, discharging mechanism is in Pneumatic Conveying Mechanism Under the action of powder is transmitted, negative pressure is formed in discharging mechanism, so that by the downward suction and conveying of powder, simultaneously because blanking machine Negative pressure is formed in structure, dust discharge component is communicated in above storage bin, therefore can be by the dust raised in storage bin together inspiration discharging machine Structure, so that the airborne dust in storage bin be reduced, has reached the technique effect for reducing dust pollution, while ensure the smooth of blanking.

The utility model is further arranged to：Shaft of the agitating device including being rotatably dispose in storage bin, described turn Axis side wall is by setting connecting rod to be connected with outer ribbon, and the rotation direction of the outer ribbon is symmetrical arranged with shaft midpoint, and the connecting rod is set Rotation direction opposite interior ribbon corresponding with outer ribbon is equipped with, and the interior ribbon is arranged between outer ribbon and shaft.

By using above-mentioned technical proposal, after powder is placed in storage bin, ribbon and outer ribbon are same in shaft drive When rotate, when ribbon rotates in shaft drive, interior ribbon can push the powder in the middle part of storage bin to both sides, and due to outer Ribbon and interior ribbon it is oppositely oriented, while interior ribbon pushes middle part powder to both sides, outer ribbon is by the powder of both sides Pushed to middle part, so as to fulfill balance of the powder in storage bin, while can realize being sufficiently stirred for powder, prevent powder from sending out Raw caking phenomenon, easy to blanking.

The utility model is further arranged to：The material-level detecting device for detecting material position is provided with the storage bin, The material-level detecting device includes being arranged at the upper material position detection components of storage bin side wall and is arranged at connecting rod and storage bin bottom The lower material position detection components in portion, the upper material position detection components are connected with control module, the control module connection by circuit There is alarm.

By using above-mentioned technical proposal, the upper material position of material position and lower material position on can detecting is provided with storage bin and is examined Survey component and lower material position detection components, when powder reaches upper material position detection components, upper material position detection components sense and to Control module sends signal, and control module controls feed arrangement out of service after being judged to signal, while is sent out to alarm Go out signal so that alarm sends sound-light alarm, when the powder in storage bin reaches low material position, lower material position detection components can be with Detect that powder is located at low material position, and signal is sent to control module, control module control alarm sends sound-light alarm, is used for Remind the timely feed supplement of worker.

The utility model is further arranged to：The discharging mechanism includes being opened in the discharge port in the middle part of storage bin bottom surface, Rotate in the discharging bin and be provided with that discharging is spiral, and described discharging bin one end lower surface is provided with out funnel, the discharging leakage Bucket is connected to Pneumatic Conveying Mechanism.

By using above-mentioned technical proposal, discharge port is opened in the middle part of storage bin bottom surface, and rabbling mechanism carries out powder The backward middle part of stirring pushes and causes powder to enter discharging bin by discharge port, the discharging helical rotation in discharging bin and by powder to Go out the push of funnel side, be provided with Pneumatic Conveying Mechanism due to going out below funnel, Pneumatic Conveying Mechanism can go out when working Funnel negative pressure formed below, forms the powder in funnel downward suction, improves blanking speed, while can pass through row Airborne dust in storage bin is drawn down into discharging mechanism and discharged together by dirt component, reduces dust pollution.

The utility model is further arranged to：The discharging bin offers observation panel, the sight close to funnel one end is gone out Cha Kou is rotated and is provided with access panel.

By using above-mentioned technical proposal, observation panel is offered close to the one end for going out funnel in discharging bin, in observation panel Inner wall on be also hinged with access panel, access panel is closed observation panel by rotating, and discharging bin can be seen by opening access panel Discharging situation, putting material situation is monitored in real time easy to worker, ensures being smoothed out for blanking.

The utility model is further arranged to：The Pneumatic Conveying Mechanism includes roots blower and is connected to roots blower Air inlet pipe, the air inlet pipe is connected with Venturi tube, it is described go out funnel discharge end be communicated in the charging of Venturi tube side wall Mouthful, the air inlet pipe is provided with the detection table for detecting manifold pressure.

By using above-mentioned technical proposal, roots blower produces wind-force and enters Venturi tube, venturi via air inlet pipe Pipe side wall connects out funnel, can will be blown out by the powder for going out funnel into Venturi tube, inspection is provided with air inlet pipe Table is surveyed, detection table is used to detect the wind pressure in Pneumatic Conveying Mechanism, if being blocked in Venturi tube, detection table can detect Air inlet overpressure is excessive, when roots blower breaks down wind pressure can be caused too small, detection table can detect air inlet at this time Wind pressure in pipe is too high or too low, and controls charging to stop by control module and alarm, and reminds worker to be overhauled in time.

The utility model is further arranged to：The dust discharge component includes being opened in the dust exhausting hole of storage bin side wall and opens Above discharging bin into dirt hole, be connected with dust flue between the dust exhausting hole and the hole into dirt.

By using above-mentioned technical proposal, it will be connected by dust flue above storage bin with cutting agency, so work as blanking When negative pressure is formed in mechanism, the airborne dust in storage bin can be entered in cutting agency by dust flue, reach the technology of depositing dust Effect.

The utility model is further arranged to：The feed arrangement includes being arranged at the feed pipe above storage bin, described Feed pipe side wall is provided with removes iron component for remove the iron filings in powder, and helical feed is connected with above the feed pipe Device, the auger conveyor top are provided with feed hopper.

By using above-mentioned technical proposal, powder is introduced into feed hopper, afterwards will into auger conveyor, auger conveyor Powder is sent into feed pipe, and powder, can be by carrying out if there is the metal impurities such as iron filings in powder when by feed pipe except iron component Absorption, so as to achieve the purpose that removal of impurities.

The utility model is further arranged to：The upper material position detection components include being arranged at the storage bin lateral wall First tongue tube, the first detection plate for being rotatably dispose in the storage bin inner wall, first detection plate are provided with magnet, when One detection plate turns to when being contacted with storage bin inner wall, and the magnet is contour and closest with the first tongue tube, and described first Tongue tube is connected with control module by circuit.

By using above-mentioned technical proposal, when powder is enough, under the drive of rabbling mechanism, powder rotates from bottom to top And contact, and the first detection plate can be lifted up with the outer convex globoidal of the first detection plate so that the first detection plate around Hinge joint is lifted up and causes magnet away from the first tongue tube, to show the powder height in storage bin in predetermined highest at this time Material position point.

The utility model is further arranged to：Vibrating spring is provided with below the feed hopper, the feed hopper is provided with Vibrator.

By using above-mentioned technical proposal, vibrator starts during charging, and drives feed hopper to shake, due to setting Vibrating spring, adds the vibrating effect of feed hopper, easy to feeding.

In conclusion the utility model has the advantages that：

First, by setting dust discharge component, the airborne dust in storage bin can be extracted out in the lump while blanking, reduce powder Dustiness contaminates；

Second, by the way that rabbling mechanism is arranged to inside and outside oppositely oriented structure so that the powder stirring in storage bin is more Uniformly, prevent from luming.

Brief description of the drawings

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the schematic top plan view of the utility model entirety；

Fig. 3 is the partial structural diagram of discharging mechanism；

Fig. 4 is the detailed construction schematic diagram of discharging mechanism；

Fig. 5 is the structure diagram of discharging mechanism and dust discharge component；

Fig. 6 is the structure diagram of agitating device；

Fig. 7 is except the structure diagram of iron component.

In figure：1st, storage bin；2nd, feed arrangement；3rd, agitating device；4th, discharging mechanism；5th, dust discharge component；6th, material-level measure Device；7th, discharge port；8th, discharging bin；9th, discharge spiral；10th, discharging machine；11st, torque limiter coupling；12nd, funnel is gone out；13、 Pneumatic Conveying Mechanism；14th, observation panel；15th, boss；16th, access panel；17th, dust exhausting hole；18th, into dirt hole；19th, dust flue；20th, sieve Thatch wind turbine；21st, air inlet pipe；22nd, Venturi tube；23rd, table is detected；24th, shaft；25th, stirring motor；26th, end cap；27th, connecting rod； 28th, outer ribbon；29th, interior ribbon；30th, upper material position detection components；31st, lower material position detection components；32nd, the first tongue tube；33rd, first Detection plate；34th, magnet；35th, the second tongue tube；36th, cross bar；37th, the second detection plate；38th, alarm；39th, feed pipe；40th, spiral shell Revolve conveyer；41st, feed hopper；42nd, stent；43rd, vibrating spring；44th, vibrator；45th, sieve plate；46th, except iron component；47th, it is open； 48th, sealing cover；49th, cover board；50th, lamp；51st, peep hole；52nd, control module.

Embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

A kind of Pneumatic conveyer of granular material, as shown in Figure 1, including storage bin 1, the top of storage bin 1 be provided with into Expect device 2, for granular material to be sent in storage bin 1, be additionally provided with storage bin 1 for preventing stirring for powder caking Mix device 3（It is shown in Fig. 2）, powder stirring is uniform while, powder can store up at the middle part of storage bin 1 to bottom discharge The lower section of feed bin 1 is provided with discharging mechanism 4, dust discharge component 5 is provided between 1 side wall of storage bin and discharging mechanism 4, after stirring Powder is directly entered discharging mechanism 4 in 1 bottom of storage bin and discharges, and the airborne dust raised in storage bin 1 passes through dust discharge group Part 5 is drawn into discharging mechanism 4 and discharges in the lump, and upper material position and the lower material position for detecting powder are additionally provided with storage bin 1 Material-level detecting device 6.

As shown in figure 4, discharging mechanism 4 includes the discharge port 7 for being opened in 1 bottom of storage bin, set in the lower section of discharge port 7 Have discharging bin 8, rotate in the discharging bin 8 and be provided with discharging spiral 9, the powder after being stirred by storage bin 1 enter discharging bin 8 and by Discharge spiral 9 to 8 one end of discharging bin convey；Spiral 9 end that discharges is connected with discharging machine 10, and discharging machine 10 drives discharging spiral shell Rotation 9 rotates and is fed forward powder, and torque limiter coupling 11, limited torque shaft coupling are provided with the output shaft of discharging machine 10 Device 11 is connected to discharging spiral 9 by link chain mechanism and drives discharging spiral 9 to rotate, and causes when the generation in discharging bin 8 blocks When spiral 9 moments of torsion born that discharge are excessive, torque limiter coupling 11 can skid so as to play the role of protecting discharging machine 10； The discharge end of discharging bin 8 is connected with out funnel 12, and the lower section for going out funnel 12 is connected with Pneumatic Conveying Mechanism 13, Geldart-D particle Mechanism 13 can blow the powder fallen by going out funnel 12 forward, as shown in figure 5, discharging bin 8 close to go out funnel 12 One end offer observation panel 14, boss 15 is provided with the inner wall of observation panel 14, it is also hinged on the inner wall of observation panel 14 There is access panel 16（It is shown in Fig. 3）, access panel 16 can contradict on boss 15 by rotating and close observation panel 14, open Access panel 16 can see the discharging situation of discharging bin 8.

As shown in Figure 3 and Figure 4, dust discharge component 5 includes the dust exhausting hole 17 for being opened in 1 side wall upper position of storage bin, also wraps Include be opened in 8 discharge end of discharging bin into dirt hole 18, in dust exhausting hole 17 and into dust flue 19 is connected between dirt hole 18, herein Dust flue 19 can be wired hose, when Pneumatic Conveying Mechanism 13 blows away the powder to be leaked down by going out funnel 12, into dirt The lower section of hole 18 can form negative pressure, so that sent out the airborne dust suction discharging bin 8 in storage bin 1 and by Pneumatic Conveying Mechanism 13, this Sample just reduces the airborne dust in storage bin 1, reduces dust pollution.

As shown in figure 4, Pneumatic Conveying Mechanism 13 includes roots blower 20, air inlet is connected with the air outlet of roots blower 20 Pipe 21, air inlet pipe 21 are connected with Venturi tube 22, and the feed opening for going out funnel 12 is communicated in 22 side wall of Venturi tube, roots blower Negative pressure is formed in Venturi tube 22 after 20 startups, powder can be directly entered Venturi tube 22 and in wind-force band by going out funnel 12 It is sent under dynamic, realizes blanking, simultaneously because the wind in Venturi tube 22 flows backward always, can be formed below into dirt hole 18 Negative pressure, and by the airborne dust suction Venturi tube 22 in storage bin 1, realize that airborne dust is discharged；Connected on 21 side wall of air inlet pipe The detection table 23 of pressure in detection air inlet pipe 21 is useful for, detection table 23 herein can be electro connecting pressure gauge, due to literary mound In pipe 22 need to work normally under pressure, when Venturi tube 22 blocks, electro connecting pressure gauge detection It is higher than particular value to the pressure in air inlet pipe 21, roots blower 20 is stopped and is overhauled at this time, when roots blower 20 is sent out During raw failure, electro connecting pressure gauge can detect that wind pressure is too low in air inlet pipe 21, so as to send signal to control module 52, control Molding block 52 controls feed arrangement 2 to stop charging, while control module is connected with alarm 38 and produces sound-light alarm, and Discharge spiral 9 start discharging before, roots blower 20 first starts, and makes to keep in Venturi tube 22 again to start after certain wind pressure Blanking, can avoid blocking to a certain extent.

As shown in fig. 6, agitating device 3 includes the shaft 24 being rotatably arranged in storage bin 1, one end connection of shaft 24 is stirred Motor 25 is mixed, and the one end of storage bin 1 away from stirring motor 25 is provided with end cap 26, as shown in figure 5, end cap 26 passes through spiral shell Tether and be connected on 1 end of storage bin, when needing maintenance, end cap 26 and shaft 24 are together pulled down, it is convenient to overhaul；In shaft 24 On be welded with some connecting rods 27, connecting rod 27 is set perpendicular to 24 axis of shaft, and is welded with connecting rod 27 and is turned round by metallic plate It is curved into outer ribbon 28 and interior ribbon 29, outer ribbon 28 close to 1 inner wall of storage bin set, the rotation direction of outer ribbon 28 is with discharge port 7 for symmetric points by two it is lateral among rotation so that close to 1 inner wall of storage bin powder by two it is lateral among push；In connecting rod 27 On be also welded with interior ribbon 29, interior ribbon 29 is between connecting rod 27 and outer ribbon 28, and the rotation direction of interior ribbon 29 and outer spiral shell With 28 it is oppositely oriented so that close to shaft 24 powder can from centre to both sides push, so into storage bin 1 powder Middle part is pushed from centre to both sides, and the powder in storage bin 1 can be sufficiently stirred, be prevented by two lateral middle push by outside While luming, and stir, pushed by outer ribbon 28 with discharge port 7 among trend, so that powder be flowed by discharge port 7 Go out；Since the total length of outer ribbon 28 is more than the total length of interior ribbon 29, in order to ensure the stress of interior ribbon 29 and outer ribbon 28 Area equation, the width that the width of interior ribbon 29 is more than to outer ribbon 28 are set.

Material-level detecting device 6 includes being used to detect the upper material position detection components 30 of material position and for detecting under lower material position Material-level measure component 31, as shown in Figures 2 and 3, upper material position detection components 30 include being fixed at the of 1 lateral wall of storage bin One tongue tube 32, and the first tongue tube 32 is arranged on the extreme higher position for allowing powder to enter, on 1 inner wall of storage bin and first 32 corresponding position of tongue tube is transversely hinged to the top the first detection plate 33, and the first detection plate 33 is convexly curved downwards by hinge joint Set, magnet 34 has been bolted in the first detection plate 33, has been connect when the first detection plate 33 is turned to 1 inner wall of storage bin When touching, magnet 34 is closest with the first tongue tube 32 and connects the first tongue tube 32, so as to send inspection to control module 52 Signal is surveyed, when powder is enough, under the drive of rabbling mechanism, powder rotates and outer with the first detection plate 33 from bottom to top Convex globoidal contacts, and can be lifted up the first detection plate 33 so that the first detection plate 33 is lifted up simultaneously around hinge joint So that magnet 34 shows the powder height in storage bin 1 in predetermined highest material position point at this time away from the first tongue tube 32；Such as figure Shown in 5 and Fig. 6, lower material position detection components 31 include being fixed on the second tongue tube 35 of 1 bottom outer wall of storage bin, at 27 end of connecting rod Portion's transverse weld has cross bar 36, is rotated on cross bar 36 and is socketed with the second detection plate 37, passes through bolt in the second detection plate 37 Magnet 34 is fixed with, when cross bar 36 turns to bottom, if powder, meeting when magnet 34 turns to bottom are arranged at 1 bottom of storage bin Upward lifting certain altitude, and more than the minimum range that can start the second tongue tube 35, so that the second tongue tube 35 It is off, shows there is powder in storage bin 1, when powder reaches low material position in storage bin 1, the second detection plate 37 rotates It can be pivotally lowered into close to vertical state under 34 self gravitation of magnet after to 1 bottom of storage bin, magnet 34 is close to second at this time Tongue tube 35 simultaneously can start the second tongue tube 35, and the second tongue tube 35 sends signal to control module 52 at this time, with reference to Fig. 2, Powder in display storage bin 1 has reached low material position；When material-level detecting device 6 detects that powder is located at high charge level or low material position When, control module 52 is connected with alarm 38, and sending signal to alarm 38 makes alarm 38 alarm, while controls charging to fill Put 2 stoppings charging or timely feed supplement, it by microcontroller is control circuit that core forms that control module 52 herein, which is,.

As shown in Figure 1, feed arrangement 2 includes the feed pipe 39 for being arranged at 1 upper surface of storage bin, it is connected with feed pipe 39 Auger conveyor 40, the discharge end of auger conveyor 40 are connected on feed pipe 39, and the other end is connected with feed hopper 41, feed hopper 41 are arranged on stent 42, and vibrating spring 43 is provided between stent 42 and feed hopper 41, pass through on 41 side wall of feed hopper Bolt is fixedly connected with vibrator 44, and the import of feed hopper 41 is provided with sieve plate 45, powder is poured into the sieve plate of feed hopper 41 On 45, vibrator 44 starts afterwards so that feed hopper 41 shake and by powder vibrations to realize in feed hopper 41 charging and Stirring motor 25 could open the vibrator 44 on feed hopper 41 after opening, and avoid 25 difficulty in starting of stirring motor after first feeding The problem of；It is provided with 39 side wall of feed pipe except iron component 46, as shown in fig. 7, except iron component 46 includes being arranged on feed pipe The magnet of 39 side walls, when powder passes through feed pipe 39, the metal impurities such as iron filings in powder can be drawn onto on magnet, from And realize the effect for removing iron impurities, the opening 47 of 39 side wall of feed pipe is opened in except iron component 46 further includes, in feed pipe The sealing cover 48 for opening 47 to be closed also is hinged with 39 side walls, sealing cover 48 is locked away from one end of hinge joint by latching Tightly on 39 side wall of feed pipe, so that opening 47 be closed, so sealing cover 48 can be opened at interval of a period of time, will fed Iron filings on 39 inner wall of pipe take out, and are cleared up.

Feed arrangement 2 can also carry out feeding by the way of feed hopper 41 to be directly positioned over to the top of storage bin 1, at this time may be used Powder is promoted to by the top of feed hopper 41 using equipment such as elevators, powder enters storage bin 1, this kind of side through feed hopper 41 afterwards Formula eliminates auger conveyor 40, suitable for the situation that upper doses is larger.

As shown in Figure 1, being provided with the cover board 49 for the opening 47 of upper end to be covered above storage bin 1, cover board 49 can To be bolted on storage bin 1, lamp 50 is provided with cover board 49, the light that lamp 50 is sent can be with direct irradiation into storage In feed bin 1, peep hole 51 is further opened with cover board 49, peep hole 51 is closed by transparent material, is so needing people intuitively When observing the working condition in storage bin 1, open lamp 50 and can be observed by peep hole 51, it is convenient in storage bin 1 Operating mode is intuitively supervised.

The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims (10)

1. a kind of Pneumatic conveyer of granular material, including storage bin (1), it is characterised in that：Set above the storage bin (1) Feed arrangement (2) is equipped with, the agitating device (3) for preventing powder from luming, the storage bin are provided with the storage bin (1) (1) bottom is provided with discharging mechanism (4), the discharging mechanism (4) include being communicated in the discharging bin (8) of storage bin (1) bottom with And the Pneumatic Conveying Mechanism (13) connected with discharging bin (8), it is provided between the storage bin (1) and discharging bin (8) for inciting somebody to action The dust discharge component (5) of airborne dust extraction in storage bin (1).

A kind of 2. Pneumatic conveyer of granular material according to claim 1, it is characterised in that：The agitating device (3) shaft (24) for being rotatably dispose in storage bin (1) is included, shaft (24) side wall is outer by setting connecting rod (27) to be connected with Ribbon (28), the rotation direction of the outer ribbon (28) are symmetrical arranged with shaft (24) midpoint, the connecting rod (27) be provided with rotation direction with The corresponding opposite interior ribbon (29) of outer ribbon (28), and the interior ribbon (29) be arranged at outer ribbon (28) and shaft (24) it Between.

A kind of 3. Pneumatic conveyer of granular material according to claim 2, it is characterised in that：The storage bin (1) The material-level detecting device (6) for detecting material position is inside provided with, the material-level detecting device (6) includes being arranged at storage bin (1) The upper material position detection components (30) of side wall and the lower material position detection components for being arranged at connecting rod (27) and storage bin (1) bottom (31), the material-level detecting device（6）Control module is connected with by circuit（52）, the control module（52）It is connected with alarm Device（38）.

A kind of 4. Pneumatic conveyer of granular material according to claim 3, it is characterised in that：The discharging mechanism (4) include being opened in the discharge port (7) in the middle part of storage bin (1) bottom surface, it is spiral that the interior rotation of the discharging bin (8) is provided with discharging (9), discharging bin (8) one end lower surface is provided with out funnel (12), it is described go out funnel (12) be connected to Geldart-D particle Mechanism (13).

A kind of 5. Pneumatic conveyer of granular material according to claim 4, it is characterised in that：The discharging bin (8) Observation panel (14) is offered close to funnel (12) one end is gone out, the observation panel (14) rotates and is provided with access panel (16).

A kind of 6. Pneumatic conveyer of granular material according to claim 4, it is characterised in that：The pneumatic conveyer Structure (13) includes roots blower (20) and the air inlet pipe (21) for being connected to roots blower (20), the air inlet pipe (21) are connected with Venturi tube (22), it is described go out funnel (12) discharge end be communicated in the feed inlet of Venturi tube (22) side wall, the air inlet pipe (21) it is provided with the detection table (23) for detecting manifold pressure.

A kind of 7. Pneumatic conveyer of granular material according to claim 5, it is characterised in that：The dust discharge component (5) include being opened in the dust exhausting hole (17) of storage bin (1) side wall and be opened in above discharging bin (8) into dirt hole (18), institute State and be connected with dust flue (19) between dust exhausting hole (17) and (18) into dirt hole.

A kind of 8. Pneumatic conveyer of granular material according to claim 1, it is characterised in that：The feed arrangement (2) include being arranged at the feed pipe (39) above storage bin (1), feed pipe (39) side wall is provided with for by powder What iron filings removed removes iron component（46）, feed pipe (39) top is connected with auger conveyor (40), the auger conveyor (40) top is provided with feed hopper（41）.

A kind of 9. Pneumatic conveyer of granular material according to claim 4, it is characterised in that：The upper material-level measure Component (30) includes being arranged at first tongue tube (32) of the storage bin (1) lateral wall, is rotatably dispose in the storage bin (1) First detection plate of inner wall（33）, first detection plate（33）Magnet (34) is provided with, when the first detection plate（33）Turn to When being contacted with storage bin (1) inner wall, the magnet (34) and the first tongue tube (32) are contour and closest, the first dry spring Pipe（32）Control module is connected with by circuit（52）.

A kind of 10. Pneumatic conveyer of granular material according to claim 8, it is characterised in that：The feed hopper (41) lower section is provided with vibrating spring (43), and the feed hopper (41) is provided with vibrator (44).