CN109176890B - Concrete mixing plant - Google Patents
Concrete mixing plant Download PDFInfo
- Publication number
- CN109176890B CN109176890B CN201811051054.5A CN201811051054A CN109176890B CN 109176890 B CN109176890 B CN 109176890B CN 201811051054 A CN201811051054 A CN 201811051054A CN 109176890 B CN109176890 B CN 109176890B
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- waiting
- stirring
- bin
- control system
- sand
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- 238000003756 stirring Methods 0.000 claims abstract description 110
- 239000000428 dust Substances 0.000 claims abstract description 73
- 239000004576 sand Substances 0.000 claims abstract description 54
- 239000004575 stone Substances 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
- B28C7/0069—Storage containers, e.g. hoppers, silos, bins having compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
- B28C7/0076—Parts or details thereof, e.g. opening, closing or unloading means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
- B28C7/044—Weighing mechanisms specially adapted therefor; Weighing containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0481—Plant for proportioning, supplying or batching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
Abstract
The invention discloses a concrete mixing plant, which comprises a sand and stone input station, a conveyor belt, a waiting bin, a mixing device, a steel structure frame and a control system box, wherein the sand and stone input station is connected with the conveyor belt; the sand and stone input station is arranged at the top of the conveyor belt; the conveying belt is connected to the side edge of the storage bin; a stirring device is arranged below the waiting bin; the control system box is arranged at the side of the stirring device; the storage bin is internally provided with an arc plate, a secondary storage hopper and a primary storage hopper from top to bottom in sequence; the bottoms of the first-stage waiting hopper and the second-stage waiting hopper are respectively provided with a first discharger and a second discharger; the outer side of the waiting bin is provided with a dust removing device; a PLC control system is arranged in the control system box; the PLC control system is electrically connected with the sand and stone input station, the conveyor belt, the stirring device, the first discharger and the second discharger respectively. The invention provides a concrete mixing station which is uniform in mixing, reduces dust, is high in working efficiency and meets environmental protection requirements.
Description
Technical Field
The invention belongs to the field of construction machinery equipment, and particularly relates to a concrete mixing plant.
Background
With the development of commercial concrete industry, commercial concrete enterprises are continuously increased, and the market competition is vigorous, so that the production efficiency can be improved only stably. In addition, in the aspect of environmental protection, the requirements of society on environmental protection are also higher and higher, and enterprises also need to correspondingly improve the environmental performance of production equipment.
The prior art discloses the application number: the utility model provides a novel numerical control concrete mixing plant of CN201620281475.7, includes grit input station, water supply system, mixer, control system case, the conveyer belt is being connected to grit input station, the funnel is being connected to the conveyer belt, install the funnel below the mixer, the mixer is installed on the steel structure frame, install concrete output pipe on the steel structure frame, install the water tower on the steel structure frame, install the stair on the steel structure frame, install steel structure frame one side control system case, install steel structure frame one side water supply system, the water supply system below is provided with the basin, the cement jar is installed to steel structure frame one side top. The beneficial effects are that: the design can control the mixing of the raw materials more accurately, improves the mixing quality of concrete, and improves the mixing efficiency.
The prior art scheme has the problems that:
1. in terms of efficiency: the mixer generally needs 2 to 4 discs for producing one-car concrete, and the time for each disc of concrete to be stirred is about 25 seconds. Because the aggregate bin of the stirring station is far away from the stirring machine, the aggregate batching and metering generally needs at least 15 seconds, the aggregate is completely conveyed to the intermediate material waiting hopper through the conveying belt, at least 20 seconds are needed, the metering and conveying time influences the production efficiency of the stirring machine, and the aggregate batching and metering can be performed after the intermediate material waiting hopper is completely charged during the second metering and conveying.
2. When the intermediate material waiting hopper instantly feeds materials to the stirring main machine, the intermediate material waiting hopper is in a completely opened state, and a large amount of aggregate instantly enters the stirring main machine to instantly generate a large reverse airflow to carry dust outwards.
Disclosure of Invention
Aiming at the problems and the defects of the prior art, the invention provides the concrete mixing station which is uniform in mixing, reduces dust emission, is high in working efficiency and meets the environmental protection requirement.
In order to achieve the above object, the technical scheme of the present invention is as follows: a concrete mixing plant comprises a sand and stone input station, a conveyor belt, a waiting bin, a mixing device, a steel structure frame and a control system box; the sand and stone input station is arranged at the top of the conveyor belt; the conveying belt is connected to the side edge of the storage bin; a stirring device is arranged below the waiting bin; the stirring device is arranged on the steel structure frame; the control system box is arranged at the side of the stirring device; the storage bin is internally provided with an arc plate, a secondary storage hopper and a primary storage hopper from top to bottom in sequence; the bottoms of the first-stage waiting hopper and the second-stage waiting hopper are respectively provided with a first discharger and a second discharger; the outer side of the waiting bin is provided with a dust removing device; the first-stage waiting hoppers and the second-stage waiting hoppers are equidistantly arranged on the inner wall of the waiting bin, and the bottoms of the first-stage waiting hoppers are connected with the top of the stirring device; buffer mechanisms are respectively arranged in the first-stage waiting hopper and the second-stage waiting hopper; a PLC control system is arranged in the control system box; the PLC control system is electrically connected with the sand and stone input station, the conveyor belt, the stirring device, the first discharger and the second discharger respectively.
The invention is further optimized, and the buffer mechanism comprises a buffer plate, a spring and a fixing plate; the fixed plate is connected to the inner wall of the storage bin; one end of the buffer plate is connected through a hinge, and the other end of the buffer plate is suspended in the air in a downward inclined manner, so that a discharging channel is formed between the buffer plate and the inner wall of the storage bin; one end of the spring is connected to the buffer plate, and the other end of the spring is connected to the fixing plate. Through the mode, the sand and stone raw materials fall onto the buffer plate, drainage is carried out through the buffer plate inclined downwards, so that the sand and stone raw materials can be prevented from being collided with a mechanism in the storage bin to play a role in protection, and dust emission can be reduced.
The invention is further optimized, and the arc plates are arranged obliquely downwards; one end of the arc plate is connected to the inner wall of the storage bin to be stored; the other end is suspended and is close to the inner wall of the other side of the storage bin to form a dust passage. Through the mode, one end of the arc plate is connected to the inner wall of the storage bin, the other end of the arc plate is suspended, the arc plate and the inner wall of the storage bin form a dust raising channel, the dust collector at the top of the storage bin works, dust raising is more favorable for being absorbed by the dust collector through the narrow dust raising channel, and dust which is not absorbed by the dust collector can slide to the belt scale for recycling through the arc plate in inclined arrangement, so that resources are prevented from being wasted and the environment is polluted.
The invention is further optimized, and the tail end of the conveyor belt is also provided with a belt scale; the belt scale is horizontally connected with the conveyor belt and extends into the waiting bin; the belt scale is electrically connected with a PLC control system in the control system box. Through the mode, the belt scale is horizontally connected with the tail end of the conveying belt, and the belt scale respectively conveys sand and stone raw materials to the secondary waiting hopper and the primary waiting hopper for storage according to the numerical value set by the PLC control system, so that the stored weights are consistent, and statistics and management are facilitated.
The invention is further optimized, and the dust removing device comprises a dust collector and a pulse bag type dust collector; the dust collector is arranged at the top of the storage bin; the pulse bag type dust collector is arranged at the top of the stirring device.
The invention is further optimized, and the sand and stone input station comprises a sand and stone steel frame, a feeding bin and a metering scale; the feeding bin is arranged above the metering scale; the feeding bin and the metering scale are respectively arranged on the sand steel frame; the metering scale is electrically connected with a PLC control system in the control system box.
The stirring device comprises a stirring motor and a rotating shaft; the stirring motor is connected with the rotating shaft; a left speed reducer box, a left stirring hoop, a spacing ring, a middle stirring hoop, a spacing ring, a right stirring hoop and a right speed reducer box are sequentially arranged on the rotating shaft from left to right; the left stirring hoop, the middle stirring hoop and the right stirring hoop are respectively provided with a stirring arm and a scraper; the scraper is connected to the tail end of the stirring arm.
The invention is further optimized, and the inclination angle of the arc plate is 50-55 degrees.
The invention is further optimized, and the number of the middle stirring hoops is at least three; the scraper is in an inverted convex shape or square or triangle shape.
The invention is further optimized, and the thicknesses of the primary material waiting hopper and the secondary material waiting hopper are 2cm-4cm.
The working principle of the invention is as follows: the PLC control system of control system case controls respectively and starts grit input station, the conveyer belt, agitating unit, first tripper and second tripper work, grit raw materials gets into from the grit input station, the grit raw materials falls to the conveyer belt and conveys to wait in the feed bin, the grit raw materials falls to the second grade and waits that the hopper will grit raw materials shift to the one-level through the second tripper and wait the hopper and circulate the storage, the grit raw materials on the one-level waits that the hopper will grit raw materials pours into agitating unit through first tripper and stir, the agitating unit is repeated work, improve work efficiency, wait the dust collector in feed bin outside and retrieve cement raise dust.
The invention has the following advantages and beneficial effects:
1. according to the invention, the first-stage waiting hoppers and the second-stage waiting hoppers are equidistantly arranged in the waiting bin, so that two-stage storage and alternate storage are realized, the stirring station continuously works, the automation degree is high, the working efficiency is improved, the sand and stone raw materials stored in the first-stage waiting hoppers and the second-stage waiting hoppers are the same, and statistics is convenient.
2. According to the invention, dust caused when sand and stone raw materials on the conveyor belt fall to the belt scale is isolated by the circular arc plate, so that the dust is spread in a small range in the storage bin, the dust is prevented from being spread outwards, one end of the circular arc plate is connected to the inner wall of the storage bin, and the other end of the circular arc plate is suspended, so that a dust channel is formed between the circular arc plate and the inner wall of the storage bin, a dust collector at the top of the storage bin works, the dust is more favorably absorbed by the dust collector through the narrow dust channel, and the dust is repeatedly utilized, so that the waste of resources and the pollution to the environment are avoided.
3. The dust collector mainly absorbs dust caused by a storage bin, the pulse bag type dust collector mainly absorbs dust caused by a stirring device, dust is removed at different positions for two times, the dust removal effect is good, and dust is effectively prevented from being blown out.
4. According to the invention, the sand and stone raw materials fall onto the buffer plate, and flow is conducted through the buffer plate which is inclined downwards, so that the sand and stone raw materials can be prevented from being collided with a mechanism in the storage bin to play a role in protection, and the generation of dust can be reduced.
5. The invention has reasonable and compact structural arrangement and is convenient for maintenance.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the structure of the waiting bin of the invention.
FIG. 3 is a schematic view of a stirring device according to the present invention.
In the figure, the serial numbers and corresponding names:
1-grit input station, 2-conveyer belt, 3-agitating unit, 4-wait feed bin, 5-dust collector, 6-pulse bag dust remover, 7-steel structure frame, 8-control system case, 9-go feed bin, 10-measure, 11-grit steelframe, 41-belt scale, 42-circular arc board, 43-buffer mechanism, 44-second wait hopper, 45-second tripper, 46-first wait hopper, 47-first tripper, 31-agitator motor, 32-pivot, 33-left reduction gear case, 34-left stirring band, 35-well stirring band, 36-spacer, 37-right stirring band, 38-right reduction gear case.
Description of the embodiments
The invention is described in further detail below with reference to the attached drawings and detailed description:
example 1: as shown in fig. 1 to 3, a concrete mixing plant comprises a sand input station 1, a conveyor belt 2, a waiting bin 4, a mixing device 3, a steel structure frame 7 and a control system box 8; the sand and stone input station 1 is arranged at the top of the conveyor belt 2; the conveyor belt 2 is connected to the side edge of the storage bin 4; a stirring device 3 is arranged below the waiting bin 4; the stirring device 3 is arranged on the steel structure frame 7; the control system box 8 is arranged at the side edge of the stirring device 3; the storage bin 4 is internally provided with an arc plate 42, a secondary storage hopper 44 and a primary storage hopper 46 in sequence from top to bottom; the bottoms of the first-stage waiting hopper 46 and the second-stage waiting hopper 44 are respectively provided with a first discharger 47 and a second discharger 45; the outer side of the waiting bin 4 is provided with a dust removing device; the primary waiting hopper 46 and the secondary waiting hopper 44 are equidistantly arranged on the inner wall of the waiting bin 4, and the bottom of the primary waiting hopper 46 is connected with the top of the stirring device 3; buffer mechanisms 43 are respectively arranged in the first-stage waiting hopper 46 and the second-stage waiting hopper 44; a PLC control system is arranged in the control system box 8; the PLC control system is electrically connected with the sand input station 1, the conveyor belt 2, the stirring device 3, the first discharger 47 and the second discharger 45 respectively.
The buffer mechanism 43 comprises a buffer plate, a spring and a fixed plate; the fixed plate is connected to the inner wall of the storage bin 4; one end of the buffer plate is connected through a hinge, and the other end of the buffer plate is suspended in the air in a downward inclined manner, so that a discharging channel is formed between the buffer plate and the inner wall of the storage bin 4; one end of the spring is connected to the buffer plate, and the other end of the spring is connected to the fixing plate. Through the mode, the sand and stone raw materials fall onto the buffer plate, drainage is carried out through the buffer plate inclined downwards, so that the sand and stone raw materials can be prevented from being collided with a mechanism in the storage bin to play a role in protection, and dust emission can be reduced.
The arc plate 42 is arranged obliquely downwards; one end of the arc plate 42 is connected to the inner wall of the storage bin 4; the other end is suspended and is close to the inner wall of the other side of the storage bin 4 to form a dust passage.
The tail end of the conveyor belt 2 is also provided with a belt scale 41; the belt scale 41 is horizontally connected with the conveyor belt 2, and the belt scale 41 extends into the waiting bin 4; the belt scale 41 is electrically connected with a PLC control system in the control system box 8.
The dust removing device comprises a dust collector 5 and a pulse bag type dust collector 6; the dust collector 5 is arranged at the top of the waiting bin 4; the pulse bag type dust collector 6 is arranged at the top of the stirring device 3.
The sand and stone input station 1 comprises a sand and stone steel frame 11, a feeding bin 9 and a metering scale 10; the feeding bin 9 is arranged above the metering scale 10; the feeding bin 9 and the metering scale 10 are respectively arranged on a sand steel frame 11; the metering scale 10 is electrically connected with a PLC control system in the control system box 8.
The stirring device 3 comprises a stirring motor 31 and a rotating shaft 32; the stirring motor 31 is connected with the rotating shaft 32; the rotating shaft 32 is provided with a left speed reducer box 33, a left stirring hoop 34, a spacing ring 36, a middle stirring hoop 35, a spacing ring 36, a right stirring hoop 37 and a right speed reducer box 38 in sequence from left to right; the left stirring hoop 34, the middle stirring hoop 35 and the right stirring hoop 37 are respectively provided with a stirring arm and a scraper; the scraper is connected to the tail end of the stirring arm.
The arc plate 42 is inclined at an angle of 50 degrees.
The number of the middle stirring hoops 35 is three; the scraper is in an inverted convex shape.
The thickness of the primary and secondary holding hoppers 46, 44 is 2cm.
The working principle of the invention is as follows: the PLC control system of the control system box 8 respectively controls and starts the sand and stone input station 1, the conveyor belt 2, the stirring device 3, the first discharger 47 and the second discharger 45 to work, sand and stone raw materials enter from the sand and stone input station 1, the sand and stone raw materials fall into the conveyor belt 2 and are conveyed into the waiting bin 4, the sand and stone raw materials fall into the second waiting bin 44 to transfer the sand and stone raw materials to the first waiting bin 46 for circulation storage through the second discharger 45, the sand and stone raw materials on the first waiting bin 46 are injected into the stirring device 3 through the first discharger 47 for stirring, the stirring station repeatedly works, the working efficiency is improved, and the dust removing device outside the waiting bin 4 recycles cement dust.
Example 2: as shown in fig. 1 to 3, a concrete mixing plant comprises a sand input station 1, a conveyor belt 2, a waiting bin 4, a mixing device 3, a steel structure frame 7 and a control system box 8; the sand and stone input station 1 is arranged at the top of the conveyor belt 2; the conveyor belt 2 is connected to the side edge of the storage bin 4; a stirring device 3 is arranged below the waiting bin 4; the stirring device 3 is arranged on the steel structure frame 7; the control system box 8 is arranged at the side edge of the stirring device 3; the storage bin 4 is internally provided with an arc plate 42, a secondary storage hopper 44 and a primary storage hopper 46 in sequence from top to bottom; the bottoms of the first-stage waiting hopper 46 and the second-stage waiting hopper 44 are respectively provided with a first discharger 47 and a second discharger 45; the outer side of the waiting bin 4 is provided with a dust removing device; the primary waiting hopper 46 and the secondary waiting hopper 44 are equidistantly arranged on the inner wall of the waiting bin 4, and the bottom of the primary waiting hopper 46 is connected with the top of the stirring device 3; buffer mechanisms 43 are respectively arranged in the first-stage waiting hopper 46 and the second-stage waiting hopper 44; a PLC control system is arranged in the control system box 8; the PLC control system is electrically connected with the sand input station 1, the conveyor belt 2, the stirring device 3, the first discharger 47 and the second discharger 45 respectively.
The buffer mechanism 43 comprises a buffer plate, a spring and a fixed plate; the fixed plate is connected to the inner wall of the storage bin 4; one end of the buffer plate is connected through a hinge, and the other end of the buffer plate is suspended in the air in a downward inclined manner, so that a discharging channel is formed between the buffer plate and the inner wall of the storage bin 4; one end of the spring is connected to the buffer plate, and the other end of the spring is connected to the fixing plate. Through the mode, the sand and stone raw materials fall onto the buffer plate, drainage is carried out through the buffer plate inclined downwards, so that the sand and stone raw materials can be prevented from being collided with a mechanism in the storage bin to play a role in protection, and dust emission can be reduced.
The arc plate 42 is arranged obliquely downwards; one end of the arc plate 42 is connected to the inner wall of the storage bin 4; the other end is suspended and is close to the inner wall of the other side of the storage bin 4 to form a dust passage.
The tail end of the conveyor belt 2 is also provided with a belt scale 41; the belt scale 41 is horizontally connected with the conveyor belt 2, and the belt scale 41 extends into the waiting bin 4; the belt scale 41 is electrically connected with a PLC control system in the control system box 8.
The dust removing device comprises a dust collector 5 and a pulse bag type dust collector 6; the dust collector 5 is arranged at the top of the waiting bin 4; the pulse bag type dust collector 6 is arranged at the top of the stirring device 3.
The sand and stone input station 1 comprises a sand and stone steel frame 11, a feeding bin 9 and a metering scale 10; the feeding bin 9 is arranged above the metering scale 10; the feeding bin 9 and the metering scale 10 are respectively arranged on a sand steel frame 11; the metering scale 10 is electrically connected with a PLC control system in the control system box 8.
The stirring device 3 comprises a stirring motor 31 and a rotating shaft 32; the stirring motor 31 is connected with the rotating shaft 32; the rotating shaft 32 is provided with a left speed reducer box 33, a left stirring hoop 34, a spacing ring 36, a middle stirring hoop 35, a spacing ring 36, a right stirring hoop 37 and a right speed reducer box 38 in sequence from left to right; the left stirring hoop 34, the middle stirring hoop 35 and the right stirring hoop 37 are respectively provided with a stirring arm and a scraper; the scraper is connected to the tail end of the stirring arm.
The inclination angle of the arc plate 42 is 55 degrees.
Five middle stirring hoops 35 are provided; the scraper is in an inverted convex shape.
The thickness of the primary and secondary holding hoppers 46, 44 is 4cm.
Example 2 works on the same principle as example 1.
Example 3: as shown in fig. 1 to 3, a concrete mixing plant comprises a sand input station 1, a conveyor belt 2, a waiting bin 4, a mixing device 3, a steel structure frame 7 and a control system box 8; the sand and stone input station 1 is arranged at the top of the conveyor belt 2; the conveyor belt 2 is connected to the side edge of the storage bin 4; a stirring device 3 is arranged below the waiting bin 4; the stirring device 3 is arranged on the steel structure frame 7; the control system box 8 is arranged at the side edge of the stirring device 3; the storage bin 4 is internally provided with an arc plate 42, a secondary storage hopper 44 and a primary storage hopper 46 in sequence from top to bottom; the bottoms of the first-stage waiting hopper 46 and the second-stage waiting hopper 44 are respectively provided with a first discharger 47 and a second discharger 45; the outer side of the waiting bin 4 is provided with a dust removing device; the primary waiting hopper 46 and the secondary waiting hopper 44 are equidistantly arranged on the inner wall of the waiting bin 4, and the bottom of the primary waiting hopper 46 is connected with the top of the stirring device 3; buffer mechanisms 43 are respectively arranged in the first-stage waiting hopper 46 and the second-stage waiting hopper 44; a PLC control system is arranged in the control system box 8; the PLC control system is electrically connected with the sand input station 1, the conveyor belt 2, the stirring device 3, the first discharger 47 and the second discharger 45 respectively.
The buffer mechanism 43 comprises a buffer plate, a spring and a fixed plate; the fixed plate is connected to the inner wall of the storage bin 4; one end of the buffer plate is connected through a hinge, and the other end of the buffer plate is suspended in the air in a downward inclined manner, so that a discharging channel is formed between the buffer plate and the inner wall of the storage bin 4; one end of the spring is connected to the buffer plate, and the other end of the spring is connected to the fixing plate. Through the mode, the sand and stone raw materials fall onto the buffer plate, drainage is carried out through the buffer plate inclined downwards, so that the sand and stone raw materials can be prevented from being collided with a mechanism in the storage bin to play a role in protection, and dust emission can be reduced.
The arc plate 42 is arranged obliquely downwards; one end of the arc plate 42 is connected to the inner wall of the storage bin 4; the other end is suspended and is close to the inner wall of the other side of the storage bin 4 to form a dust passage.
The tail end of the conveyor belt 2 is also provided with a belt scale 41; the belt scale 41 is horizontally connected with the conveyor belt 2, and the belt scale 41 extends into the waiting bin 4; the belt scale 41 is electrically connected with a PLC control system in the control system box 8.
The dust removing device comprises a dust collector 5 and a pulse bag type dust collector 6; the dust collector 5 is arranged at the top of the waiting bin 4; the pulse bag type dust collector 6 is arranged at the top of the stirring device 3.
The sand and stone input station 1 comprises a sand and stone steel frame 11, a feeding bin 9 and a metering scale 10; the feeding bin 9 is arranged above the metering scale 10; the feeding bin 9 and the metering scale 10 are respectively arranged on a sand steel frame 11; the metering scale 10 is electrically connected with a PLC control system in the control system box 8.
The stirring device 3 comprises a stirring motor 31 and a rotating shaft 32; the stirring motor 31 is connected with the rotating shaft 32; the rotating shaft 32 is provided with a left speed reducer box 33, a left stirring hoop 34, a spacing ring 36, a middle stirring hoop 35, a spacing ring 36, a right stirring hoop 37 and a right speed reducer box 38 in sequence from left to right; the left stirring hoop 34, the middle stirring hoop 35 and the right stirring hoop 37 are respectively provided with a stirring arm and a scraper; the scraper is connected to the tail end of the stirring arm.
The inclination angle of the arc plate 42 is 53 degrees.
Six middle stirring hoops 35 are provided; the scraper is in an inverted convex shape.
The thickness of the primary and secondary holding hoppers 46, 44 is 3cm.
Example 4: example 4 differs from example 1 in that: the scraper is square or triangular, and can achieve the effect of uniform stirring.
It is to be understood that the above-described embodiments are merely illustrative of the present invention and are not intended to be limiting. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary or exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (7)
1. A concrete mixing plant, which comprises a sand and stone input station (1), a conveyor belt (2), a waiting bin (4), a mixing device (3), a steel structure frame (7) and a control system box (8); the sand and stone input station (1) is arranged at the top of the conveyor belt (2); the conveying belt (2) is connected to the side edge of the storage bin (4); a stirring device (3) is arranged below the waiting bin (4); the stirring device (3) is arranged on the steel structure frame (7); the control system box (8) is arranged at the side edge of the stirring device (3); the method is characterized in that: an arc plate (42), a secondary material waiting hopper (44) and a primary material waiting hopper (46) are sequentially arranged in the material waiting bin (4) from top to bottom; the bottoms of the primary waiting hopper (46) and the secondary waiting hopper (44) are respectively provided with a first discharger (47) and a second discharger (45); the outer side of the waiting bin (4) is provided with a dust removing device; the primary waiting hopper (46) and the secondary waiting hopper (44) are equidistantly arranged on the inner wall of the waiting bin (4), and the bottom of the primary waiting hopper (46) is connected with the top of the stirring device (3); buffer mechanisms (43) are respectively arranged in the first-stage waiting hopper (46) and the second-stage waiting hopper (44); a PLC control system is arranged in the control system box (8); the PLC control system is electrically connected with the sand and stone input station (1), the conveyor belt (2), the stirring device (3), the first discharger (47) and the second discharger (45) respectively;
the buffer mechanism (43) comprises a buffer plate, a spring and a fixed plate; the fixed plate is connected to the inner wall of the storage bin (4); one end of the buffer plate is connected through a hinge, and the other end of the buffer plate is suspended in the air in a downward inclined manner, so that a discharging channel is formed between the buffer plate and the inner wall of the storage bin (4); one end of the spring is connected to the buffer plate, and the other end of the spring is connected to the fixed plate;
the arc plates (42) are obliquely arranged downwards; one end of the arc plate (42) is connected to the inner wall of the storage bin (4); the other end is suspended and is close to the inner wall of the other side of the storage bin (4) to form a dust passage;
the inclination angle of the arc plate (42) is 50-55 degrees.
2. A concrete mixing plant according to claim 1, characterized in that: the tail end of the conveyor belt (2) is also provided with a belt scale (41); the belt scale (41) is horizontally connected with the conveyor belt (2), and the belt scale (41) extends into the waiting bin (4); the belt scale (41) is electrically connected with a PLC control system in the control system box (8).
3. A concrete mixing plant according to claim 1, characterized in that: the dust removing device comprises a dust collector (5) and a pulse bag type dust collector (6); the dust collector (5) is arranged at the top of the storage bin (4); the pulse bag type dust collector (6) is arranged at the top of the stirring device (3).
4. A concrete mixing plant according to claim 1, characterized in that: the sand and stone input station (1) comprises a sand and stone steel frame (11), a feeding bin (9) and a metering scale (10); the feeding bin (9) is arranged above the metering scale (10); the feeding bin (9) and the metering scale (10) are respectively arranged on the sand steel frame (11); the metering scale (10) is electrically connected with a PLC control system in the control system box (8).
5. A concrete mixing plant according to claim 1, characterized in that: the stirring device (3) comprises a stirring motor (31) and a rotating shaft (32); the stirring motor (31) is connected with the rotating shaft (32); a left speed reducer box (33), a left stirring hoop (34), a spacing ring (36), a middle stirring hoop (35), a spacing ring (36), a right stirring hoop (37) and a right speed reducer box (38) are sequentially arranged on the rotating shaft (32) from left to right; the left stirring hoop (34), the middle stirring hoop (35) and the right stirring hoop (37) are respectively provided with a stirring arm and a scraper; the scraper is connected to the tail end of the stirring arm.
6. A concrete mixing plant according to claim 5, characterized in that: the number of the middle stirring hoops (35) is at least three; the scraper is in an inverted convex shape or square or triangle shape.
7. A concrete mixing plant according to claim 1, characterized in that: the thickness of the first-stage waiting hopper (46) and the second-stage waiting hopper (44) is 2cm-4cm.
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| CN201811051054.5A CN109176890B (en) | 2018-09-10 | 2018-09-10 | Concrete mixing plant |
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| CN201811051054.5A CN109176890B (en) | 2018-09-10 | 2018-09-10 | Concrete mixing plant |
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| CN112936605B (en) * | 2021-04-12 | 2022-12-16 | 广西大都混凝土集团有限公司 | Energy-concerving and environment-protective type's aggregate feeding system that concentrates |
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