CN201917502U - Device for automatically detecting stacking density of powder material - Google Patents

Abstract

The utility model provides a device for automatically detecting the stacking density of powder material, which relates to a detecting device for the stacking density of powder (particle) material. The utility model comprises an original screw conveyer and a material-feeding pipe, and is characterized in that a material-separating hopper with a cylinder single-gate plate valve is arranged on a bypass pipe at the bottom of the original screw conveyer; a material-pushing scraper blade device with an air cylinder is mounted below the material-separating hopper; a material-weighting bucket is arranged below a rectangular frame and is fixedly provided with a material-discharging valve; four supporting seats on the front and the rear outer walls of the rectangular frame are placed on a front and a rear trays of a weighing sensor; two valve plate sealing covers of the material-discharging valve are arranged on the end surface of an opening at the lower end of the material-weighting bucket; two rotating shafts on the outer ends of the two valve plates are hinged with two ends of a material-discharging air cylinder; the lower part of the material-weighting bucket is communicated with a material inlet of an inclined secondary screw conveyer; the middle part of the secondary screw conveyer is communicated with the material-feeding pipe of the original screw conveyer; and the weighting sensor is connected with a signal input terminal of a PLC control system. The utility model has the advantages of high weighting adjustment accuracy, high speed and high efficiency.

Description

A kind of automatic detection granular material is piled up the device of density

Technical field:

The utility model relates to the pick-up unit of powder (grain) shape solid accumulation density, particularly a kind of device and method of semi-manufacture expanded ammonium nitrate bulk density of automatic detection bulking ammonium nitrate explosive.

Background technology:

Bulking ammonium nitrate explosive is a kind of powder industrial explosive of function admirable, the puffing and modifying of ammonium nitrate is the critical process in its production run, the index of reflection expanded ammonium nitrate quality has outward appearance, moisture, natural bulk density, oil absorbency etc., and wherein natural bulk density is the index that can directly reflect the expanded ammonium nitrate quality.Expanded ammonium nitrate enters in the worm conveyor after the crystallizing tank discharging, is sent to next procedure by worm conveyor, tremie pipe.The xsect Lower Half of screw conveyor housing is square for semicircle, the first half, and cover plate is arranged at the top.The detection of nature bulk density detects before generally entering next procedure after the crystallizing tank discharge, can also can take a sample in worm conveyor in the sampling of crystallizing tank discharging opening.

Detecting expanded ammonium nitrate at present all is to adopt the hand sampling detection method.Prepare the container (standard drink) of a fixed volume earlier, the expanded ammonium nitrate that on production process needs is detected is taken a sample, to fall into standard drink naturally by the bulking ammonium nitrate explosive powder of 40 mesh sieves, carry out weighing, obtain the ratio of quality and volume in the container, can calculate the bulk density of this expanded ammonium nitrate sample.The bulk density numerical value and the standard value that calculate are compared, and whether qualified judge.

The hand sampling detection method is long detection time, and a sample does not also detect and finishes often, and other expanded ammonium nitrate of this jar has flowed into next procedure; If the testing result of wait sample enters next procedure after coming out again, can influence production efficiency again; Because hand sampling testing amount is big, can only take sampling Detection, extract part jar other product and detect, account for total 20% of jar number of producing, cause the risk of quality control bigger; Hand sampling in addition, dust is big when sieving, workman's severe operational environment.

Summary of the invention:

The purpose of this utility model is to overcome above-mentioned defective, provides a kind of automatic detection granular material to pile up the device of density.

Device of the present utility model is: comprise former worm conveyor, tremie pipe, it is characterized in that: branch hopper of the fixing connection of former helical feed motor spindle bypass duct, divide hopper lower port capping the tabular valve of sub-material simple gate, the tabular valve rotating shaft of simple gate is linked in the bearing saddle bore of a top of the trellis movingly, rotating shaft one axle head is fixed a connecting rod, and connecting rod is implemented radial type with the piston club head of the sub-material cylinder that is fixed on a top of the trellis and is connected; Branch hopper below on the support is equipped with the pusher screeding device, this device is that a circular shaft shape charging ram right part fit is fixed in the center pit of tabular translatory plate middle part, the charging ram left end is enclosed within the interior circle of slip trepanning seat of support left side wall setting movingly, charging ram right-hand member head is fixedlyed connected with the pusher cylinder piston rod boom end on being fixed on support, the bucket width that the translatory plate width is provided with greater than the below, the translatory plate lower surface is higher than the bucket upper surface; Bucket is that the rectangle frame below is fixed with discharge gate, be fixed with two supporting bases respectively on the outer wall before and after the rectangle frame, four supporting bases are placed on the front and back pallet of LOAD CELLS, and pallet is fixed on the front and back crossbeam of support correspondence position setting before and after the LOAD CELLS; Discharge gate is a symmetric double family of power and influence plate valve, two valve plates are sealed on the bucket lower ending opening end face, two outer distolateral fixing rotating shafts of valve plate are linked in respectively in the fixing bearing saddle bore of bucket left and right sides outer wall movingly, two roller end are fixed an oscillating deck respectively, and two oscillating deck upper end center pits are implemented radial type by bearing pin with cylinder seat bottom, the piston rod top of discharging cylinder respectively and are connected; The bucket below is provided with the cavity frustum receiving hopper that is fixed in the support, and receiving hopper upper end cavity is greater than bucket bottom gabarit, and the receiving hopper below is communicated with the tilting secondary helical feed machine inlet capable that the bottom is provided with by pipeline; Secondary worm conveyor middle part is implemented pipeline with the tremie pipe lower port of former worm conveyor and is communicated with, and the discharging opening of secondary worm conveyor docks with the next procedure device; Wall and top are provided with the dust cover cover plate around the frame support; The air inlet/outlet of sub-material cylinder, pusher cylinder, discharging cylinder passes through sub-material gauge tap, pusher gauge tap, discharging gauge tap and source of the gas pipe pipeline connection respectively by pipeline; The LOAD CELLS information output is connected with PLC control system signal input part by circuit.

Advantage of the present utility model is:

1, this device has online automatic detection, automatic discrimination function, and the accuracy rate height, speed is fast, efficient is high;

2, can realize full inspection,, effectively control product quality the product sampling detection of each jar;

3, reduce fixing testing staff, improve essential safety;

4, density is counted airtight design, does not have the dust from flying phenomenon, improves the worker-house environment.

Description of drawings:

Fig. 1 is the utility model structural representation.

Fig. 2 is for dividing hopper, the tabular valve of simple gate, sub-material air cylinder structure enlarged diagram.

Fig. 3 is discharge hopper, discharge gate, blade structure enlarged diagram.

Embodiment:

Structure of the present utility model comprises former worm conveyor 1, tremie pipe 13, it is characterized in that: branch hopper 8 of the fixing connection of former worm conveyor 1 bottom bypass duct, divide sub-material simple gate of hopper 8 lower port cappings tabular valve 10, tabular valve 10 rotating shafts of simple gate are linked in the bearing saddle bore of a top of the trellis movingly, rotating shaft one axle head is fixed a connecting rod, and connecting rod is implemented radial type with the piston club head of the sub-material cylinder 9 that is fixed on a top of the trellis and is connected; Branch hopper 8 belows on the support are equipped with the pusher screeding device, this device is that circular shaft shape charging ram 7 right part fits are fixed in the tabular translatory plate 12 middle part center pits, charging ram 7 left ends are enclosed within the interior circle of slip trepanning seat of support left side wall setting movingly, charging ram 7 right-hand member heads are fixedlyed connected with the pusher cylinder 11 piston rod boom ends on being fixed on support, bucket 4 width that translatory plate 12 width are provided with greater than the below, translatory plate 12 lower surfaces are higher than bucket 4 upper surfaces; Bucket 4 is fixed with discharge gate 3 for the rectangle frame below, be fixed with two supporting bases 6 respectively on the outer wall before and after the rectangle frame, four supporting bases 6 are placed on the front and back pallet of LOAD CELLS, and pallet is fixed on the front and back crossbeam 5 of support correspondence position setting before and after the LOAD CELLS; Discharge gate 3 is a symmetric double family of power and influence plate valve, two valve plates are sealed on the bucket 4 lower ending opening end faces, two outer distolateral fixing rotating shafts of valve plate are linked in respectively in the fixing bearing saddle bore of bucket 4 left and right sides outer walls movingly, two roller end are fixed an oscillating deck respectively, and two oscillating deck upper end center pits are implemented radial type by bearing pin with cylinder seat bottom, the piston rod top of discharging cylinder respectively and are connected; Bucket 4 belows are provided with the cavity frustum receiving hopper 2 that is fixed in the support, and receiving hopper 2 upper end cavitys are greater than bucket 4 bottom gabarits, and receiving hopper 2 belows are communicated with tilting secondary worm conveyor 14 charging apertures that the bottom is provided with by pipeline; Secondary worm conveyor 14 middle parts are implemented pipeline with tremie pipe 13 lower port of former worm conveyor 1 and are communicated with, and the discharging opening of secondary worm conveyor 14 docks with the next procedure device; Wall and top are provided with the dust cover cover plate around the frame support; The air inlet/outlet of sub-material cylinder 9, pusher cylinder 11, discharging cylinder passes through sub-material gauge tap, pusher gauge tap, discharging gauge tap and source of the gas pipe pipeline connection respectively by pipeline; The LOAD CELLS information output is connected with PLC control system signal input part by circuit.

Device is that expanded ammonium nitrate is packed in the bucket 4 of fixed volume, and LOAD CELLS weighs the Different Weight of filling it up with expanded ammonium nitrate, and the PLC control system calculates bulk density, and carries out whether qualified judgement and processing.

Divide hopper 8 to be square, rack-mount.The hopper top is a feeding-passage, fixedlys connected with former worm conveyor 1 in top.Divide sub-material simple gate of hopper 8 lower port cappings tabular valve 10, control it by the outer sub-material cylinder 9 of feeding-passage by hinge and open sub-material valve closing when the piston rod of sub-material cylinder 9 is released, sub-material valve open during the piston rod return.The below of bucket 4 is equipped with discharge gate 3, and discharge gate 3 is designed to two-door structure, controls two-door unlatching by the discharging cylinder that hopper is outer by hinge, two-door the closing when piston rod of discharging cylinder is released, two-door opening during the piston rod return.Bucket 4 tops are equipped with the pusher scraper plate, the translatory plate 12 of pusher screeding device is very little with the end face gap of bucket 4, the pusher scraper plate promotes by a pusher cylinder 11, the material that has more the hopper end face can be struck off, and guarantees the height unanimity of material in the hopper.Bucket 4 outside front and back positions, a LOAD CELLS is installed at 1/3 place respectively apart from the top, is fixed on the crossbeam 5, and crossbeam 5 is connected on the support, and the weight of the discharge gate of installing on bucket 4, the bucket 43 all can be passed through the LOAD CELLS weighing like this.The tapered receiving hopper 2 of the bottom design of support, fixedly connected with support in top, and separate with bucket 4 and discharge gate 3 bottom and 14 closed connections of secondary worm conveyor, and leave the space that discharge gate 3 is opened; The dust cover of the peripheral installation activity of support, the tracheae of cylinder, the power lead of LOAD CELLS and signal wire all pass dust cover by sealing-plug.The power supply of LOAD CELLS, signal wire are connected with the PLC control system, and the calculating and the judgement of the switch of the workflow of device, the switch that divides bin gate, Dump gate, the action of pusher scraper plate, weighing, density are finished by the PLC control system.

During work, device is closed discharge gate 3 earlier, and weight signal is made zero.Open the tabular valve 10 of sub-material simple gate by cylinder, material falls into bucket 4 from former worm conveyor 1 through dividing hopper 8.During to setting weight, the tabular valve 10 of sub-material simple gate cuts out, and stops charging.The translatory plate 12 of pusher screeding device is done a straight line motion back and forth under the promotion of pusher cylinder 11, the material that has more bucket 4 end faces is struck off.Through the time of 2～3s, treat that bucket 4 weight are stable after, LOAD CELLS weighs the weight of materials in the bucket 4.The PLC control system is carried out computing with this weight numerical value and the numerical value of importing bucket 4 volumes in advance, calculate the bulk density of material, and with in advance the input the standard density value compare to determine, qualified then green light shows, defective then red light shows and sounds the alarm, and reminds the operator that defective material is handled.After LOAD CELLS weighed the weight of material in the bucket 4, discharge gate 3 was opened immediately, and the material in the bucket 4 is entered secondary worm conveyor 14 by receiving hopper 2.Like this, device is finished a testing process, waits for entering testing process next time.

The front end of former worm conveyor 1 has a tremie pipe 13, is connected with the secondary worm conveyor 14 of device below.When device was not worked, material all was the secondary worm conveyor 14 that falls into the below by this tremie pipe 13.

Claims (1)

1. one kind is detected the device that granular material is piled up density automatically, comprise former worm conveyor (1), tremie pipe (13), it is characterized in that: the fixing branch hopper (8) that is communicated with of former worm conveyor (1) bottom bypass duct, divide hopper (a 8) tabular valve of sub-material simple gate of lower port capping (10), the tabular valve of simple gate (10) rotating shaft is linked in the bearing saddle bore of a top of the trellis movingly, rotating shaft one axle head is fixed a connecting rod, and connecting rod is implemented radial type with the piston club head of the sub-material cylinder (9) that is fixed on a top of the trellis and is connected; Branch hopper (8) below on the support is equipped with the pusher screeding device, this device is that a circular shaft shape charging ram (7) right part fit is fixed in the center pit of tabular translatory plate (12) middle part, charging ram (7) left end is enclosed within the interior circle of slip trepanning seat of support left side wall setting movingly, charging ram (7) right-hand member head is fixedlyed connected with pusher cylinder (11) the piston rod boom end on being fixed on support, bucket (4) width that translatory plate (12) width is provided with greater than the below, translatory plate (12) lower surface is higher than bucket (4) upper surface; Bucket (4) is fixed with discharge gate (3) for the rectangle frame below, be fixed with two supporting bases (6) respectively on the outer wall before and after the rectangle frame, four supporting bases (6) are placed on the front and back pallet of LOAD CELLS, and pallet is fixed on the front and back crossbeam (5) of support correspondence position setting before and after the LOAD CELLS; Discharge gate (3) is a symmetric double family of power and influence plate valve, two valve plates are sealed on bucket (4) the lower ending opening end face, two outer distolateral fixing rotating shafts of valve plate are linked in respectively in the fixing bearing saddle bore of bucket (4) left and right sides outer wall movingly, two roller end are fixed an oscillating deck respectively, and two oscillating deck upper end center pits are implemented radial type by bearing pin with cylinder seat bottom, the piston rod top of discharging cylinder respectively and are connected; Bucket (4) below is provided with the cavity frustum receiving hopper (2) that is fixed in the support, receiving hopper (2) upper end cavity is greater than bucket (4) bottom gabarit, and receiving hopper (2) below is communicated with tilting secondary worm conveyor (14) charging aperture that the bottom is provided with by pipeline; Secondary worm conveyor (14) middle part is implemented pipeline with tremie pipe (13) lower port of former worm conveyor (1) and is communicated with, and the discharging opening of secondary worm conveyor (14) docks with the next procedure device; Wall and top are provided with the dust cover cover plate around the frame support; The air inlet/outlet of sub-material cylinder (9), pusher cylinder (11), discharging cylinder passes through sub-material gauge tap, pusher gauge tap, discharging gauge tap and source of the gas pipe pipeline connection respectively by pipeline; The LOAD CELLS information output is connected with PLC control system signal input part by circuit.

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