CN110834967A - Continuous mixing station stock bin configured with online sampling device and sampling method - Google Patents
Continuous mixing station stock bin configured with online sampling device and sampling method Download PDFInfo
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- CN110834967A CN110834967A CN201911253697.2A CN201911253697A CN110834967A CN 110834967 A CN110834967 A CN 110834967A CN 201911253697 A CN201911253697 A CN 201911253697A CN 110834967 A CN110834967 A CN 110834967A
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- 238000005070 sampling Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 170
- 238000005303 weighing Methods 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 48
- 230000001186 cumulative effect Effects 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000012790 confirmation Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N2001/2007—Flow conveyors
- G01N2001/2028—Belts
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- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a continuous mixing station storage bin with an online sampling device and a sampling method. The sampling method and the steps are as follows: firstly, resetting a weighing sensor; secondly, inputting a sampling weight value, namely a preset value; and thirdly, pressing a confirmation key to automatically sample, and controlling the drawer cylinder to push back the material guide hopper when the accumulated flow reaches a preset value, so that the sampling is finished. The invention has simple structure, convenient and quick sampling and can realize on-line automatic sampling.
Description
Technical Field
The invention belongs to the field of road construction, and particularly relates to a continuous mixing station bin with an online sampling device and a sampling method.
Background
In road construction projects in China, continuous stirring equipment is adopted for producing some mixed materials, and the mixed materials need to be sampled regularly or irregularly in order to check various indexes of the mixed materials. Because sampling is very difficult in the production process of a continuous mixing station, the current main sampling mode is to manually sample on a transport vehicle or shut down a mixing device to manually intercept a certain length of mixture on a conveyor belt. The sampling in the former mode is time-consuming and labor-consuming, has potential safety hazards, and the mixture after loading has the phenomenon of material segregation with a fine upper part and a coarse lower part, so that a representative sample is difficult to obtain; the latter sampling mode equipment must be shut down, affects continuous production of the mixture and cannot realize on-line sampling.
Disclosure of Invention
The invention aims to solve the technical problem of providing a continuous mixing station stock bin with an online sampling device and a sampling method aiming at the defects of the prior method.
The technical scheme adopted by the invention is as follows:
a continuous mixing station bin configured with an online sampling device comprises a conveyor belt, a conveyor belt frame, a material guide hopper, a finished product bin and a material guide pipe, wherein one end of the material guide pipe obliquely penetrates into an inner cavity of the finished product bin from one side of the finished product bin upwards, the material guide pipe is hinged with the finished product bin, the other end of the material guide pipe is connected with the conveyor belt frame through a connecting structure, and a weighing sensor is arranged on the connecting structure;
the upper end of the material guide hopper is hinged with the tail end of the conveyor belt frame, the material guide hopper is positioned at the discharge end of the conveyor belt and can bear the discharge of the conveyor belt, and the discharge port of the material guide hopper can guide the mixed materials into the finished product bin; the lower end of the material guide hopper is connected with the conveyor belt frame through a pull hopper cylinder, and the pull hopper cylinder can adjust the direction of a discharge port of the material guide hopper so that materials in the material guide hopper enter the material guide pipe.
The conveyer belt frame is fixedly provided with a first hanging bracket, one end of the pull bucket cylinder is hinged with the first hanging bracket, and the other end of the pull bucket cylinder is hinged with the material guide bucket.
The conveyer belt frame is fixedly provided with a second hanging bracket, the upper end and the lower end of the weighing sensor are respectively connected with an upper pull rod and a lower pull rod, the upper end of the upper pull rod is hinged with the second hanging bracket, and the lower end of the lower pull rod is hinged with the material guide pipe.
The second hanger is connected with a screw rod capable of adjusting the position up and down, and the upper end of the upper pull rod is hinged with the lower end of the screw rod.
The tail end of the conveyor belt frame is connected with a hanging beam, the upper end of the material guide hopper is hinged with the hanging beam, and an avoiding notch used for avoiding the edge of the material guide hopper is formed in the hanging beam.
The upper end of the material guide hopper is provided with a material baffle plate which is positioned at a position opposite to the discharge side of the conveying belt.
The invention relates to a sampling method of a continuous mixing station storage bin, which comprises the following steps:
the discharge of the transmission belt enters a material guide hopper and enters a finished product bin from a discharge hole of the material guide hopper;
when sampling is needed, a pulling bucket cylinder is used for driving a material guide bucket, the direction of a material outlet of the material guide bucket is adjusted, the material guide bucket guides the mixture into a material guide pipe, sampling is started, and the mass of the mixture passing through the material guide pipe is measured by a weighing sensor in the sampling process;
and when the sampling amount reaches a preset value, the material guide hopper is driven by the pull hopper cylinder, so that the discharge port of the material guide hopper enters the finished product bin.
The sampling amount is the cumulative flow m of the mixture2Meter, cumulative flow m2Calculated by the following formula:
wherein m is2The unit is kg for the accumulated flow of the mixture; t is the sampling time in units of s; k is a calibration coefficient and is dimensionless; m is the instantaneous mass of the mixture in the material guide pipe, and the unit is kg; l is the length of the material guide pipe and the unit is m; v is the average speed of the pipeline mixture in the sampling process, and the unit is m/s; f is the value of the weighing sensor and has the unit of N; g is the acceleration of gravity; l2The unit is m, which is the horizontal distance from a weighing sensor to the hinged point of the material guide pipe and the finished product hopper; l1The horizontal distance from the mass center of the mixture in the material guide pipe to the hinged joint of the material guide pipe and the finished product hopper is m; q is the flow of the mixture conveyed by the conveyer belt, and the unit is t/h; rho is the density of the mixture and has the unit of g/cm3(ii) a S is the area of the cross section of the material guide pipe, and the unit is m2。
The invention has the following beneficial effects:
the upper end of the guide hopper in the continuous mixing station material bin provided with the online sampling device is hinged with the tail end of the conveyor belt frame, the guide hopper is positioned at the discharge end of the conveyor belt and can bear the discharge of the conveyor belt, the lower end of the guide hopper is connected with the conveyor belt frame through the pull hopper cylinder, and the pull hopper cylinder can adjust the direction of the discharge port of the guide hopper to enable the material in the guide hopper to enter the guide pipe. Through setting up weighing sensor, can utilize the data accuracy control volume of sampling that weighing sensor surveyed, realize quantitative sampling, and the representativeness is good.
Furthermore, a screw rod capable of adjusting the position up and down is connected to the second hanging bracket, and the included angle between the material guide pipe and the horizontal direction can be adjusted by using the screw rod, so that the material guide pipe can be stacked conveniently.
Furthermore, the hanging beam is provided with an avoiding notch for avoiding the edge of the material guide hopper, so that the hanging beam and the material guide hopper can be prevented from position interference.
Furthermore, the mixture on the conveying belt can be prevented from directly falling outside the material guide hopper through the material baffle plate, and the inaccuracy of statistics in the process of calculating the sampling amount is prevented.
According to the sampling method, when sampling is needed, the pull hopper cylinder is used for driving the material guide hopper, the direction of the material guide hopper discharge port is adjusted, the material guide hopper guides the mixture into the material guide pipe, sampling is started, the weighing sensor is used for measuring the mass of the mixture passing through the material guide pipe in the sampling process, and after the sampling amount reaches a preset value, the pull hopper cylinder is used for driving the material guide hopper to enable the material guide hopper discharge port to enter the finished product bin.
Drawings
Fig. 1 is a front view of the present invention.
FIG. 2 is a global schematic of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a partially enlarged view of a portion B in fig. 2.
Fig. 5 is a partially enlarged view of a portion E in fig. 2.
FIG. 6 is an enlarged view of a portion of FIG. 2 at D
Fig. 7 is a partially enlarged view of a portion F in fig. 2.
Fig. 8 is a global schematic diagram of fig. 8.
Fig. 9 is a partially enlarged view of a portion C in fig. 8.
Fig. 10 is a partially enlarged view of fig. 8 at G.
Fig. 11 is a weighing diagram according to the present invention.
In the figure: 1-a driving roller; 2, a conveyor belt; 3-a conveyor belt rack; 4, a material baffle plate; 5, a material guide hopper; 6, a finished product bin; 7, hanging a beam; 7-1-avoiding the notch; 8-a drawer cylinder; 9-sliding door cylinder; 10-a bin gate; 11-a material guide pipe; 12-a second hanger; 13-a load cell; 14-hanging beam fixing plate; 15-L-shaped plate; 16-bolt; 17-triangular connecting plates; 18-left fixed plate; 19-lifting lugs; 20-a pin shaft; 21-pin shaft seat; 22-right fixed plate; 23-a bearing seat; 24-bolt; 25 — a first hanger; 26-upper pin shaft seat; 27-a pin shaft; 28-lower pin shaft seat; 29-fixing plate; 30-end plate of cylinder of drawer; 31-a drawer cylinder; 32-extension rod of drawer cylinder; 34-a protruding plate; 35-a set square; 36-pin shaft seat; 37-pin shaft; 38-hanger plate; 39-fixing plate; 40-pin shaft seat; 41-pin shaft; 42-a sleeve; 43-a connecting plate; 44, fixing a plate; 45-sliding door cylinder end plate; 46-sliding door cylinder; 47-sliding door cylinder extension bar; 48, a pin shaft; 49-pin shaft seat; 50, fixing a plate; 51-a screw; 52, fixing a plate; 53-pin shaft seat; 54-a pin shaft; 55-a connecting plate; 56-upper pull rod; 57-a load cell; 58-lower pull rod; 59-connecting plate; 60-a pin shaft; 61-pin shaft seat; 62, fixing a plate; 63-a material separating plate; 64, fixing a plate; 65-pin shaft seat; 66-a pin shaft; 67-L-shaped connecting plates; 68-a triangular plate; 69, fixing a plate; 70-pin shaft seat; 71-a pin shaft; 72-pin shaft seat; 73-fixed plate.
Detailed Description
The invention is further described below with reference to the figures and examples.
Referring to fig. 1, 2 and 8, the bin of the continuous mixing station with the online sampling device of the present invention includes a conveyor belt 2, a conveyor belt frame 3, a material guide hopper 5, a finished product bin 6 and a material guide pipe 11, wherein one end of the material guide pipe 11 penetrates through an inner cavity of the finished product bin 6 from one side of the finished product bin 6 in an inclined and upward manner, the material guide pipe 11 is hinged with the finished product bin 6, the other end of the material guide pipe 11 is connected with the conveyor belt frame 3 through a connecting structure, and a weighing sensor 13 is arranged on the connecting structure; the upper end of the material guide hopper 5 is hinged with the tail end of the conveyor belt frame 3, the material guide hopper 5 is positioned at the discharge end of the conveyor belt 2 and can bear the discharge of the conveyor belt 2, and the discharge port of the material guide hopper 5 can guide the mixture into the finished product bin 6; the lower end of the material guide hopper 5 is connected with the conveyor belt frame 3 through a pull hopper cylinder 8, and the pull hopper cylinder 8 can adjust the direction of a discharge port of the material guide hopper 5, so that the material in the material guide hopper 5 enters a material guide pipe 11.
Referring to fig. 4, a first hanger 25 is fixedly installed on the conveyor belt frame 3, one end of the drawer cylinder 8 is hinged to the first hanger 25, and the other end of the drawer cylinder 8 is hinged to the material guide 5.
Referring to fig. 1 and 2, a second hanger 12 is fixedly mounted on the conveyor frame 3, an upper pull rod 56 and a lower pull rod 58 are respectively connected to the upper end and the lower end of the load cell 13, the upper end of the upper pull rod 56 is hinged to the second hanger 12, and the lower end of the lower pull rod 58 is hinged to the material guide tube 11.
Referring to fig. 7, a screw 51 capable of being moved up and down is connected to the second hanger 12, and an upper end of an upper rod 56 is hinged to a lower end of the screw 51.
Referring to fig. 1 to 3, as a preferred embodiment of the present invention, a hanging beam 7 is connected to the end of the conveyor belt frame 3, the upper end of the material guide hopper 5 is hinged to the hanging beam 7, and an avoiding notch 7-1 for avoiding the edge of the material guide hopper 5 is formed in the hanging beam 7.
Referring to fig. 1, 2 and 8, as a preferred embodiment of the present invention, a material blocking plate 4 is provided at an upper end of the material guiding hopper 5, and is located at a position opposite to a discharging side of the conveyor 2.
Referring to fig. 1 and 8, the sampling method of the continuous mixing station bunker according to the present invention includes the following processes:
the discharge of the conveyor belt 2 enters a material guide hopper 5 and enters a finished product bin 6 from a discharge hole of the material guide hopper 5;
when sampling is needed, the material guide hopper 5 is driven by the drawer cylinder 8, the direction of a discharge port of the material guide hopper 5 is adjusted, the material guide hopper 5 guides the mixture into the material guide pipe 11, sampling is started, and the mass of the mixture passing through the material guide pipe 11 is measured by the weighing sensor 13 in the sampling process;
when the sampling amount reaches a preset value, the material guide hopper 5 is driven by the pull hopper cylinder 8, so that the discharge hole of the material guide hopper 5 enters the finished product bin 6.
As a preferred embodiment of the invention, the sampling amount is calculated as the cumulative flow m of the mixture2Meter, cumulative flow m2Calculated by the following formula:
wherein m is2The unit is kg for the accumulated flow of the mixture; t is the sampling time in units of s; k is a calibration coefficient and is dimensionless; m is the instantaneous mass of the mixture in the material guide pipe, and the unit is kg; l is the length of the material guide pipe and the unit is m; v is the average speed of the pipeline mixture in the sampling process, and the unit is m/s; f is the value of the weighing sensor and has the unit of N; g is the acceleration of gravity; l2The unit is m, which is the horizontal distance from a weighing sensor to the hinged point of the material guide pipe and the finished product hopper; l1The horizontal distance from the mass center of the mixture in the material guide pipe to the hinged joint of the material guide pipe and the finished product hopper is m; q is the flow of the mixture conveyed by the conveyer belt, and the unit is t/h; rho is the density of the mixture and has the unit of g/cm3(ii) a S is the area of the cross section of the material guide pipe, and the unit is m2。
Examples
As shown in fig. 1, 2 and 8, the continuous mixing station bunker equipped with the on-line sampling apparatus of the present embodiment includes a material guide hopper 5 above a finished product bunker 6 and a material guide pipe 11 passing through a sidewall of the finished product bunker 6 and disposed obliquely, the material guide hopper 5 is hinged with the hanging beams 7, the hanging beams 7 are arranged at two sides of the tail end (discharge end) of the conveyor belt frame 3, the two hanging beams 7 are connected with the conveyor belt frame 3 through bolts, a drawer cylinder 8 is arranged on the conveyor belt frame 3, an extension rod 32 of the drawer cylinder 8 is connected with the material guide hopper 5 through a hinged piece, a finished product bin 6 is arranged under the material guide hopper 5, a material door 10 and a sliding door cylinder 9 are arranged on two sides of the finished product bin 6, an extension rod 47 of the sliding door cylinder 9 is hinged with the material door 10, the bottom of one end of the material guide pipe 11 is hinged with the finished product bin 6, and the top of one end of the material guide pipe 11 is connected with the conveyor belt frame 3F through a metering scale. In this embodiment, the conveyer frame comprises the channel-section steel steelframe that sets up around and many crossbeams of connection between two channel-sections.
As shown in fig. 1, 2 and 3, an L-shaped plate 15 is vertically fixed on the hanging beam 7, the L-shaped plate 15 is vertically fixed on a hanging beam fixing plate 14, the hanging beam fixing plate 14 is connected with the conveyor belt frame 3 through a bolt 16, the hanging beam 7 is connected with the material guide 5 through an articulated piece, the articulated piece is composed of a lifting lug 19, a pin shaft 20, a pin shaft seat 21, a left fixing plate 18, a right fixing plate 22 and a triangular connecting plate 17, the lifting lug 19 is fixed on the upper end of the material guide 5, the pin shaft seat 21 is connected with the lifting lug 19 through the pin shaft 20, the left fixing plate 18 is fixedly connected with the right fixing plate 22, the right fixing plate 22 is vertically fixed on the left end of the hanging beam 7, and the triangular connecting plate 17 is perpendicular to both the right fixing plate 22 and the hanging beam 7 and. In this embodiment, the thickness and the vertical width of the hanging beam are enough to bear the weight of the material guide hopper on the lower portion of the hanging beam, a small opening is cut in the lower portion of the hanging beam and serves as an avoidance notch 7-1, and the avoidance notch 7-1 can prevent interference between the right side of the upper end of the material guide hopper 5 and the hanging beam 7 when the material guide hopper 5 is pulled by the pull hopper cylinder 8. During specific implementation, the lifting lugs are welded on the material guide hopper, the L-shaped plates are welded on the lifting beam fixing plates, and the lifting beams are welded on the L-shaped plates.
As shown in fig. 1, 2 and 3, the bearing housing 23 of the drive roller 1 is attached to the belt frame 3 by means of bolts 24.
As shown in fig. 1, 2 and 4, the drawer cylinder 8 is connected to the conveyor belt frame 3 through an articulated element and a first hanger, the first hanger 25 is fixed to the conveyor belt frame 3, the articulated element is composed of an upper pin shaft seat 26, a pin shaft 27, a lower pin shaft seat 28 and a fixing plate 29, the upper pin shaft seat 26 is fixed to the hanger 25, the lower pin shaft seat 28 is connected to the upper pin shaft seat 26 through the pin shaft 27, the lower pin shaft seat 28 is fixed to the fixing plate 29, and the fixing plate 29 is connected to an end plate 30 of a drawer cylinder 31 through a bolt. In this embodiment, drawer cylinder and gallows all incline to place. In specific implementation, the hanging bracket is welded on the conveyor belt frame.
As shown in fig. 2, 4, 8 and 10, the extension rod 32 of the drawer cylinder 8 is connected to the material guide 5 through an articulated element, the articulated element includes a fixing plate 69, a pin shaft seat 70, a pin shaft 71, a pin shaft seat 72 and a fixing plate 73, the fixing plate 69 is fixed to the material guide 5, the pin shaft seat 70 is vertically fixed to the fixing plate 69, the fixing plate 73 is fixed to the end of the extension rod 32 of the drawer cylinder 8, the pin shaft seat 72 is vertically fixed to the fixing plate 73, and the pin shaft seat 72 is connected to the pin shaft seat 70 through a pin shaft 71.
As shown in fig. 1, 2 and 5, the material door 10 is fixed at the lower end of a material door hanging plate 38, the material door hanging plate 38 is connected with the finished product bin 6 through an articulated element, the articulated element includes an extension plate 34, a triangular plate 35, a pin shaft seat 36 and a pin shaft 37, the extension plate 34 is vertically fixed on the side wall of the finished product bin 6, the triangular plate 35 is respectively and vertically fixed with the finished product bin 6 and the extension plate 34, the pin shaft seat 36 is vertically fixed on the extension plate 34, and the material door hanging plate 38 is connected with the extension plate 34 through the pin shaft 37. In this embodiment, the bin gate hanger plate has four, and the bin gate has certain radian and has enough clearance with the finished product storehouse, can guarantee not block the material, can guarantee again that the mixture can not spill when the bin gate is closed. During specific implementation, the material door is welded on the material door hanging plate.
As shown in fig. 1, 2 and 6, the sliding door cylinder 9 is connected to the finished product bin 6 through an articulated element, the articulated element is composed of a fixing plate 39, a pin shaft seat 40, a pin shaft 41, a sleeve 42, a connecting plate 43 and a fixing plate 44, an end plate 45 of the sliding door cylinder 9 is connected to the fixing plate 44 through a bolt, the fixing plate 44 is vertically and fixedly connected to the connecting plate 43, the connecting plate 43 is fixedly connected to the sleeve 42, the sleeve 42 is connected to the pin shaft seat 40 through the pin shaft 41, the pin shaft seat 40 is fixedly connected to the upper fixing plate 39, and the upper fixing plate 39 is fixedly connected to the finished product bin 6. In this embodiment, sliding door cylinder has two, installs respectively in finished product storehouse both sides lateral wall.
As shown in fig. 1, 2 and 6, the extension rod 47 of the sliding door cylinder 9 is hinged to the material door 10, the hinged member is composed of a fixing plate 50, a pin shaft seat 49 and a pin shaft 48, the fixing plate 50 is fixed on the material door 10, and the pin shaft seat 49 is vertically fixed on the fixing plate 50 and connected with the extension rod 47 of the sliding door cylinder through the pin shaft 48.
As shown in fig. 1, 8 and 9, the material guiding pipe 11 is connected to the finished product bin 6 through an articulated piece, the articulated piece includes an L-shaped connecting plate 67, a triangular plate 68, a pin shaft seat 65, a pin shaft 66 and a fixing plate 64, the pin shaft seat 65 is vertically fixed on the fixing plate 64, the fixing plate 64 is fixedly connected to the finished product bin 6, the L-shaped connecting plate 67 is fixed on the side surface of the material guiding pipe 11, the L-shaped connecting plate 67 is vertically fixedly connected to the triangular plate 68, the triangular plate 68 is also vertically fixedly connected to the material guiding pipe 11, and the L-shaped connecting plate 67 is connected to the pin shaft seat 65 through the pin shaft 66. In this embodiment, the articulated elements are arranged on both sides of the material guide pipe and are at the same horizontal height.
As shown in fig. 1, 2 and 7, the weighing scale F comprises a second hanger 12, a screw 51, an upper hinge, an upper pull rod 56, a weighing sensor 13, a lower pull rod 58 and a lower hinge, the second hanger 12 is fixedly connected with the conveyor frame 3, the screw 51 is connected with the lower end of the second hanger 12, the screw 51 is connected with the upper pull rod 56 through the upper hinge, the upper pull rod 56 and the lower pull rod 58 are both in threaded connection with the weighing sensor 13 and respectively located at the upper end and the lower end of the weighing sensor, the lower pull rod 58 is connected with the material guiding pipe 11 through the lower hinge, the upper hinge comprises a fixing plate 52, a pin shaft seat 53, a pin shaft 54 and a connecting plate 55, the fixing plate 52 is fixedly connected with the lower end of the screw 51, the pin shaft seat 53 is vertically and fixedly connected with the fixing plate 52, the connecting plate 55 is connected with the pin shaft seat 53 through the pin shaft 54, the connecting plate 55 is fixedly connected with the upper, the lower hinged part is composed of a fixing plate 62, a pin shaft seat 61, a pin shaft 60 and a connecting plate 59, the fixing plate 62 is fixedly connected with the material guide pipe 11, the pin shaft seat 61 is fixedly connected with the fixing plate 62, the pin shaft seat 61 is connected with the connecting plate 59 through the pin shaft 60, and the connecting plate 59 is fixedly connected with the lower end of the lower pull rod 58. In this embodiment, the weigher is wholly vertically arranged. In specific implementation, the hanging bracket is welded on the conveyor belt frame.
As shown in fig. 8, a material separating plate 63 is installed below the interior of the finished product bin 6. In this embodiment, the separation flitch can effectively improve the segregation of mixture. During specific implementation, the boards surrounding each grid are vertically placed, the junction of the two grids is welded, and the junction of the grid boards and the junction of the inner side wall of the finished product bin is welded.
With reference to fig. 11, the method for on-line automatic sampling of the mixture in the continuous mixing station of the present invention comprises the following steps:
setting the display value of the sum of the weight of the material guide pipe 11 weighed by the weighing sensor 13, the weight of the lower articulated element fixing plate 62, the pin shaft seat 61, the pin shaft 60, the connecting plate 59 and the weight of the lower pull rod 58 to be zero;
step two, the material guide hopper 5 is pulled by the hopper pulling cylinder 8,the material guide hopper 5 guides the mixture into the material guide pipe 11, and sampling is started. The sampling amount is the cumulative flow m of the mixture2Meter, when the flow is accumulated m2When the preset value is reached, the material guide hopper is pushed back by the hopper pulling cylinder, and sampling is completed. Cumulative flow m2Calculated by the following formula:
wherein m is2The unit is kg for the accumulated flow of the mixture; t is time in units of s; k is a calibration coefficient and is dimensionless; m is the instantaneous mass of the mixture in the material guide pipe, and the unit is kg; l is the length of the material guide pipe and the unit is m; v is the average speed of the pipeline mixture in the sampling process, and the unit is m/s; f is the value of the weighing sensor and has the unit of N; g is the acceleration of gravity, and the value is 9.8m/s2；l2The unit is m, which is the horizontal distance from a weighing sensor to the hinged point of the material guide pipe and the finished product hopper; l1The horizontal distance from the mass center of the mixture in the material guide pipe to the hinged joint of the material guide pipe and the finished product hopper is m; q is the flow of the mixture conveyed by the conveyer belt, and the unit is t/h; rho is the density of the mixture and has the unit of g/cm3(ii) a S is the area of the cross section of the material guide pipe, and the unit is m2；
In conclusion, compared with the prior art, the invention has the following advantages:
1. need not artifical sample, convenient and fast has saved manpower and material resources.
2. Compared with the traditional manual sampling mode, the sampling method does not need to sample on the top of the mixture transport vehicle.
3. Can realize quantitative sampling and has good representativeness.
4. Can realize on-line sampling, does not need to shut down stirring equipment, and does not influence continuous production.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. A continuous mixing station bin configured with an online sampling device is characterized by comprising a conveyor belt (2), a conveyor belt frame (3), a material guide hopper (5), a finished product bin (6) and a material guide pipe (11), wherein one end of the material guide pipe (11) penetrates into an inner cavity of the finished product bin (6) from one side of the finished product bin (6) in an inclined and upward manner, the material guide pipe (11) is hinged with the finished product bin (6), the other end of the material guide pipe (11) is connected with the conveyor belt frame (3) through a connecting structure, and a weighing sensor (13) is arranged on the connecting structure;
the upper end of the material guide hopper (5) is hinged with the tail end of the conveyor belt frame (3), the material guide hopper (5) is positioned at the discharge end of the conveyor belt (2) and can bear the discharge of the conveyor belt (2), and the mixture can be guided into the finished product bin (6) through the discharge hole of the material guide hopper (5); the lower end of the material guide hopper (5) is connected with the conveyor belt frame (3) through a pull hopper cylinder (8), and the pull hopper cylinder (8) can adjust the direction of the discharge hole of the material guide hopper (5) to enable the material in the material guide hopper (5) to enter the material guide pipe (11).
2. The bunker of the continuous mixing station equipped with the on-line sampling device as claimed in claim 1, wherein the first hanger (25) is fixedly installed on the conveyor belt frame (3), one end of the drawer cylinder (8) is hinged with the first hanger (25), and the other end of the drawer cylinder (8) is hinged with the material guide hopper (5).
3. The bunker of the continuous mixing station configured with the on-line sampling device as claimed in claim 1, wherein a second hanger (12) is fixedly installed on the conveyor belt frame (3), the upper end and the lower end of the weighing sensor (13) are respectively connected with an upper pull rod (56) and a lower pull rod (58), the upper end of the upper pull rod (56) is hinged with the second hanger (12), and the lower end of the lower pull rod (58) is hinged with the guide pipe (11).
4. The bunker of continuous mixing station equipped with on-line sampling device as claimed in claim 3, wherein the second hanger (12) is connected with a screw rod (51) capable of being adjusted up and down, and the upper end of the upper pull rod (56) is hinged with the lower end of the screw rod (51).
5. The storage bin of the continuous mixing station configured with the online sampling device as claimed in claim 1, wherein the end of the conveyor belt frame (3) is connected with a hanging beam (7), the upper end of the material guide hopper (5) is hinged with the hanging beam (7), and the hanging beam (7) is provided with an avoiding notch (7-1) for avoiding the edge of the material guide hopper (5).
6. The storage bin of a continuous mixing station with an online sampling device as claimed in claim 1, wherein the guide hopper (5) is provided at its upper end with a striker plate (4) which is located opposite to the discharge side of the conveyor belt (2).
7. A method for sampling a silo of a continuous mixing station according to any one of claims 1 to 6, characterized in that it comprises the following steps:
the discharge of the conveyor belt 2 enters a material guide hopper (5) and enters a finished product bin (6) from a discharge hole of the material guide hopper (5);
when sampling is needed, a material guide hopper (5) is driven by a hopper pulling cylinder (8), the direction of a discharge hole of the material guide hopper (5) is adjusted, the material guide hopper (5) guides the mixture into a material guide pipe (11), sampling is started, and the mass of the mixture passing through the material guide pipe (11) is measured by a weighing sensor 13 in the sampling process;
when the sampling amount reaches a preset value, the material guide hopper (5) is driven by the pull hopper cylinder (8), so that the discharge hole of the material guide hopper (5) enters the finished product bin (6).
8. A method for the on-line automatic sampling of a mix in a continuous mixing plant according to claim 7, characterized in that the amount sampled is the cumulative flow m of the mix2Meter, cumulative flow m2Calculated by the following formula:
wherein m is2The unit is kg for the accumulated flow of the mixture; t is the sampling time in units of s; k is a calibration coefficient and is dimensionless; m is the instantaneous mass of the mixture in the material guide pipe, and the unit iskg; l is the length of the material guide pipe and the unit is m; v is the average speed of the pipeline mixture in the sampling process, and the unit is m/s; f is the value of the weighing sensor and has the unit of N; g is the acceleration of gravity; l2The unit is m, which is the horizontal distance from a weighing sensor to the hinged point of the material guide pipe and the finished product hopper; l1The horizontal distance from the mass center of the mixture in the material guide pipe to the hinged joint of the material guide pipe and the finished product hopper is m; q is the flow of the mixture conveyed by the conveyer belt, and the unit is t/h; rho is the density of the mixture and has the unit of g/cm3(ii) a S is the area of the cross section of the material guide pipe, and the unit is m2。
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| CN113804479A (en) * | 2021-08-31 | 2021-12-17 | 江苏沙钢集团有限公司 | Weighing and sampling method based on PLC system of automatic sampler |
| US11994423B2 (en) | 2020-08-28 | 2024-05-28 | Renovators, Llc | Weigh belt assembly with a weigh axis that intersects a rotational axis of an idler roller |
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