Metering type gate feeder

Abstract

The invention provides a metering type gate feeder, which belongs to the technical field of bulk material metering and comprises a material box and a driving mechanism for driving the material box to rotate. The material box comprises end plates, a hollow rotating shaft and blades, the two end plates are oppositely arranged, the single hollow rotating shaft penetrates through the two end plates, the multiple blades are arranged around the hollow rotating shaft and fixedly connected with the end plates and the hollow rotating shaft, and the end plates, the hollow rotating shaft and every two adjacent blades define a material chamber. A pressure sensor, a speed sensor, an anti-explosion variable-frequency outer rotor motor or an electric roller and an external connecting line are arranged in the precise metering device. The metering type gate feeder has the advantages of being high in metering precision (the small-dose material box can be manufactured according to the precision size), multifunctional in application (metering, gate closing, feeding, pressure bearing, material activating, air locking and dust collecting), small in whole machine body size, low in height, easy to manufacture and low in manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bulk material metering, and specifically discloses a metering gate feeder. BACKGROUND

[0002] The feeder device for the bulk material under the bin, tank and hopper is used for continuously and uniformly feeding the belt conveyor and the scraper machine, and the current feeder device includes an electromagnetic vibration feeder, a motor vibration feeder and a belt feeder, and the metering device used in cooperation with the feeder device includes an electronic belt scale, an electronic truck scale, a hopper scale and a belt-type weighing feeder (as shown in Figure 1 , Figure 2 ).

[0003] The current metering device has the following shortcomings: 1. Single function: the gate, the feeder device, the metering device and the chute are independently used; 2. Large machine size: which means large weight, high cost and large power consumption; 3. Large height size: the height of the combination of the gate, the feeder device and the chute is large, and the large height size means large space occupation and large lifting energy consumption; 4. Complex mechanism: which means large manufacturing difficulty and high cost. SUMMARY

[0004] The present application provides a metering gate feeder to solve the above technical problems.

[0005] The metering gate feeder provided by the present application includes a hopper, a driving mechanism for driving the hopper to rotate, a pressure sensor, a speed sensor and an industrial computer. The hopper includes end plates, a hollow shaft and blades. The two end plates are oppositely arranged, the hollow shaft penetrates through the two end plates, and the multiple blades are arranged around the hollow shaft and fixedly connected with the end plates and the hollow shaft. The end plates, the hollow shaft and the adjacent two blades enclose a material chamber. The driving mechanism includes an outer rotor motor (or an electric roller or a direct-connected motor) and a frequency converter. The outer rotor motor stator is stationary, and the casing (rotor) drives the hopper to rotate. The hopper is loaded from the upward opening and unloaded and cleaned (ultrasonic technology is used for cleaning) from the downward opening. The pressure sensor weighs each batch, the speed sensor calculates the number of revolutions, the industrial computer accumulates the material weight, the material quantity is accurately metered, the transmission line is transmitted to the control room, and the bill is printed for record. If there is a dust explosion environment, explosion-proof electrical equipment is used.

[0006] The hollow shaft has two functions: (1) as the shell of the outer rotor motor, which rotates with the hopper; (2) protects the sealed electrical equipment and signal cables, so that they are not polluted and impacted by the material; The hollow shaft can be arranged in single-shaft or double-shaft form, which can be selected according to the needs.

[0007] The above metering gate feeder is single-shaft metering, and the hollow shafts of the multiple boxes are arranged coaxially.

[0008] The above metering gate feeder is double-shaft metering, and the multiple boxes are evenly divided into two groups; the hollow shafts of all the boxes in the same group are arranged coaxially; and the hollow shafts of the boxes in different groups are arranged in parallel.

[0009] The above metering gate feeder is single-shaft coarse metering or single-shaft precise metering, and the hollow shafts of the multiple boxes are arranged coaxially, the boxes including two types of large-dose boxes and small-dose boxes; the large-dose boxes are used for integer metering of the material, and the small-dose boxes are used for zero metering of the material; the large-dose boxes and the small-dose boxes form a group, and the precision can be adjusted according to the volume of the small-dose boxes as required; the large-dose boxes and the small-dose boxes can rotate respectively and do not interfere with each other; the hollow shafts are arranged in parallel and repeatedly perform opening-rotation-filling-unloading-cleaning-closing; Coarse metering, the boxes are not provided with pressure sensors: the filling amount is basically the same, multiplied by the number of rotations (this way is mostly used in enterprise internal); Precise metering, the boxes are provided with pressure sensors: to ensure that each box is weighed, the precise number of filling amount (pressure sensor) multiplied by the number of rotations (this way is mostly used in trade settlement).

[0010] The above metering gate feeder is double-shaft coarse metering or double-shaft precise metering, and the multiple boxes are evenly divided into two groups; the hollow shafts of all the boxes in the same group are arranged coaxially, and the boxes include two types of large-dose boxes and small-dose boxes; the hollow shafts of the boxes in different groups are arranged in parallel; The hollow shafts in the two groups can be the same speed, different speed, or one stop and one rotation, upward for filling, downward for unloading, cleaning, and reciprocating; Coarse metering, the boxes are not provided with pressure sensors; Precise metering, the boxes are provided with pressure sensors; First, the integer is metered by the large-dose box, and then the remainder is supplemented by the small-dose box, volume x specific gravity x number of rotations = amount of discharged material, to achieve the purpose of precise metering.

[0011] Metering process: (1) The large-dose box and the small-dose box rotate together to give most of the material; (2) The large-dose box stops rotating after obtaining the integer; (3) The remainder is supplemented by the small-dose box; (4) The precise amount of discharged material is obtained.

[0012] Example: For example, the amount of discharged material is 95 kg, the large-dose box is 9 kg, and the small-dose box is 1 kg; (1) Large and small dose boxes are rotated together (9+1=10), giving most of the material; (2) When the discharge reaches 90 kg (10x9=90), 9 is the number of turns, the large dose box stops rotating; (3) The small dose box rotates for another 5 turns, giving the remaining 5 kg, reaching 95 kg; (4) The large and small boxes stop rotating, and the gate is closed; (5) The pressure sensor accumulates the weight of the material, and the speed sensor accumulates the number of turns of the box, which is transmitted to the industrial computer through the data line, and the industrial computer obtains the accurate discharge amount; (6) The computer records and saves each time the out-of-stock record, and the printer issues a ticket.

[0013] The above-mentioned metering gate feeder is an internal electric type, and the driving mechanism is an internal explosion-proof variable frequency outer rotor motor; the internal explosion-proof variable frequency outer rotor motor comprises a rotor and a stator, and the rotor is connected with the hollow rotating shaft. The internal electric type is used for accurate measurement, and the pressure sensor is added to add the weight of each bucket, and then the integer is measured, and then the decimal is measured.

[0014] The above-mentioned metering gate feeder is an internal electric type, and the driving mechanism is an internal explosion-proof variable frequency electric roller; the internal explosion-proof variable frequency electric roller comprises a shell, a core shaft penetrating through the shell and a motor assembly driving the shell to rotate around the core shaft, and the shell is connected with the hollow rotating shaft. The number of turns of the internal explosion-proof variable frequency electric roller is adjustable, the number of turns is fast, the discharge amount is large, the number of turns is slow, and the discharge amount is small. When the internal explosion-proof variable frequency electric roller is powered on, the shell drives the box to rotate. The internal electric type is used for accurate measurement, and the pressure sensor is added to add the weight of each bucket, and then the integer is measured, and then the decimal is measured.

[0015] The above-mentioned metering gate feeder is an external electric type, and the driving mechanism is an external direct connection explosion-proof variable frequency motor; the end of the hollow rotating shaft is located outside the end plate and connected with the external direct connection explosion-proof variable frequency motor. The external electric type is used for rough measurement, and then the integer is measured, and then the decimal is measured.

[0016] In the above-mentioned metering gate feeder, reinforcing rib plates are arranged between adjacent two blades, and the reinforcing rib plates separate the material chamber into multiple sections.

[0017] The above-mentioned metering gate feeder further comprises an activation cone installed below the discharge port and a dust collecting hood installed outside the box.

[0018] The above-mentioned metering gate feeder further comprises a telescopic electric cylinder and an ultrasonic cleaner; the cylinder body of the telescopic electric cylinder is installed outside the discharge port; the ultrasonic cleaner is installed on the piston rod of the telescopic electric cylinder, and is used for ultrasonic cleaning of the box.

[0019] The metering gate feeder further comprises a micro-arc pressure sensor; the end of the hollow rotating shaft is located outside the end plate and connected with the bearing; the micro-arc pressure sensor comprises a pressure-sensitive element, a lead wire and a signal processing unit; the pressure-sensitive element is made of an artificial dihydrogen phosphate crystal, arranged between the hollow rotating shaft and the bearing, and has an upper surface provided with an arc surface adhering to the hollow rotating shaft and connected with the signal processing unit through the lead wire; and the signal processing unit is used for converting the pressure stress into an electric signal.

[0020] Compared with the prior art, the metering gate feeder has the following beneficial effects.

[0021] 1. Multi-functional application: the metering gate feeder is a series product, has modular and intelligent design, and has various performances, such as single-shaft and double-shaft forms, built-in and external motor forms, bin-under type and side type arrangement forms, and can meet the requirements of all bulk material bin, tank and hopper discharge and feeding; (1) gate function: the metering gate feeder is used under the bin, tank and hopper, and has the same opening and closing functions as the gate, and can rotate to discharge and stop to stop; (2) metering function: the metering gate feeder has coarse metering and accurate metering functions, and can replace electronic belt scale, electronic truck scale, metering hopper and weighing feeder and other devices, especially in places requiring batching (such as underground filling concrete mixing station, ground concrete mixing station, bulk material logistics center, coal blending center and other places) (as shown in Figure 15 , Figure 16 ); (3) feeding function: the metering gate feeder has the function of a feeder, and has large or small feeding capacity (large discharge capacity at high rotating speed and small discharge capacity at low rotating speed), and can continuously and uniformly feed the belt conveyor, scraper and other transportation equipment, and can load the automobile, train and ship, can meet all feeding requirements, can meet the application of new bin, tank and hopper, and can also meet the transformation of old bin, tank and hopper, and has low body height, light weight and small size (built-in anti-explosion variable frequency electric drum or built-in anti-explosion variable frequency outer rotor motor) compared with the feeder, greatly saving the lifting energy of the silo material and the self energy consumption; (4) activation and pressure bearing function: the metering gate feeder has an activation cone component, the activation cone has the functions of unloading the pressure of the material and activating the material, and can completely eliminate the accidents of silo collapse, material accumulation, supply stop, silo blockage and mouse hole (mostly used under the conical hopper); (5) air locking function: some bins, tanks and hoppers need to prevent fire, explosion and air locking, the metering gate feeder is installed on the discharge port, has good sealing performance, and can prevent nitrogen or dust leakage (as shown in Figure 17 , Figure 18 , Figure 19 ); (6) Dust removal function: When bulk materials are discharged, dust will be raised, which may easily cause explosion. The above-mentioned metering gate feeder has a dust collection cover component, which has good dust collection, dust removal and discharge functions.

[0022] 2. The metering gate feeder has a small body size, low cost and low power consumption.

[0023] 3. The above-mentioned metering gate feeder has a small height, which can reduce the overall layout height of the warehouse, tank and bucket, saving energy consumption for material lifting; saving energy and electricity in the long run; improving the hazards of warehouse, tank and bucket storage such as warehouse collapse, arching, material blockage, and warehouse shed; saving the overall investment in warehouse, tank and bucket facilities (such as: air cannon system, belt scale system, electronic truck scale system and foundation, metering room and other facilities).

[0024] 4. The metering gate feeder has a simple structure, is easy to manufacture and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the belt discharging of a cylindrical silo in the prior art; Figure 2 This is a schematic diagram of silo car loading in the prior art; Figure 3 It is a structural diagram of a single-axis metering gate feeder; Figure 4 It is a structural diagram of a double-axis metering gate feeder; Figure 5 This is a schematic diagram of the installation of large and small dose cartridges; Figure 6 It is a structural diagram of a micro arc surface pressure sensor; Figure 7 This is a schematic diagram of the structure of a metering gate feeder driven by a built-in explosion-proof variable frequency electric drum (only large-dose material box is included); Figure 8 This is a schematic diagram of the structure of a metering gate feeder driven by a built-in explosion-proof variable frequency electric drum (including large and small dose boxes); Figure 9 This is a structural diagram of a metering gate feeder driven by a built-in explosion-proof variable frequency external rotor motor; Figure 10 for Figure 9Cross-sectional view in the direction of B-B; Figure 11 As Figure 9 Cross-sectional view in the direction of C-C; Figure 12 Structure diagram of the metering gate feeder driven by the external direct connection anti-explosion variable frequency motor (only containing the large dose box); Figure 13 Structure diagram of the metering gate feeder driven by the external direct connection anti-explosion variable frequency motor (containing the large and small dose boxes); Figure 14 Structure diagram of the economic metering gate feeder; Figure 15 Structure diagram of the reinforced metering gate feeder; Figure 16 Structure diagram of the single shaft metering gate feeder with ultrasonic cleaning function; Figure 17 Structure diagram of the double shaft metering gate feeder with ultrasonic cleaning function; Figure 18 Layout diagram of the metering gate feeder in the cylindrical silo (under-silo type); Figure 19 Side view of Figure 18 ; Figure 20 Layout diagram of the metering gate feeder in the cylindrical silo (side type); Figure 21 Side view of Figure 20 ; Figure 22 Partial enlarged view of Figure 20 ; Figure 23 Layout diagram of the metering gate feeder for downhole return well dosing and filling; Figure 24 Cross-sectional view in the direction of A-A of Figure 23 ; Figure 25 Function diagram of the metering gate feeder.

[0027] In the figure: 1 - material box; 1a - large dose material box; 1b - small dose material box; 1.1 - end plate; 1.2 - hollow rotating shaft; 1.3 - blade; 1.4 - reinforcing plate; 2 - built-in explosion-proof variable frequency electric roller; 3 - external direct connection explosion-proof variable frequency motor; 4 - activation cone; 5 - bearing; 6.1 - pressure sensitive element; 6.2 - signal processing unit; 7 - dust collecting cover; 8 - telescopic electric cylinder; 9 - ultrasonic sweeper; 10 - bearing seat; 11 - built-in explosion-proof variable frequency outer rotor motor; 11.1 - magnet; 11.2 - coil; 11.3 - control line and power line; 12 - pressure sensor; 13 - brake; 14 - flange; 101 - straight section of cylindrical silo; 102 - conical section of cylindrical silo; 103 - conical discharge port; 104 - weighing feeder; 105 - belt conveyor; 106 - floor; 107 - loading gate; 108 - metering chamber; 109 - loading truck; 110 - electronic truck scale; 111 - silo wall; 112 - filling material; 113 - discharge port; 114 - discharge belt conveyor; 115 - belt conveyor loading corridor; 116 - drive chamber; 117 - central chain wheel drive; 118 - guide chute; 119 - dust removal falling pipe; 120 - upper belt of belt conveyor; 121 - underground belt conveyor; 122 - dust removal fan; 123 - bag-type dust collector; 124 - rain shelter; 125 - dust removal pipeline; 126 - vertical elevator; 127 - joint building; 128 - scraper; 129 - trench discharge port; 130 - scraper-type cleaning machine; 131 - flat-bottomed cylindrical silo; 132 - telescopic dust removal falling pipe; 133 - flat-plate steel grid roof; 134 - underground transportation chamber; 135 - tail of box-type scraper; 136 - reinforcing column; 137 - box-type scraper; 138 - transfer belt conveyor; 139 - movable belt conveyor above silo; 140 - coal gangue counterwell two-way transportation belt conveyor; 141 - assembled gangue silo; 142 - movable belt conveyor; 143 - bendable scraper below silo; 144 - filling and transfer station; 145 - coal gangue concrete mixer truck; 146 - mounting beam; 147 - movable radar laser instrument; 148 - square steel column; 149 - reinforcing plate of square steel column; 150 - reinforcing beam; 151 - reinforcing column. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application are clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0030] Example 1 1. This embodiment provides a metering gate feeder, comprising a material box 1, a drive mechanism, a pressure sensor, a speed sensor, and an industrial control computer. The material box 1 comprises an end plate 1.1, a hollow rotating shaft 1.2, and blades 1.3. The two end plates 1.1 are arranged opposite each other, and the hollow rotating shaft 1.2 passes through the two end plates 1.1. A plurality of blades 1.3 are arranged around the hollow rotating shaft 1.2 and are fixedly connected to the end plates 1.1 and the hollow rotating shaft 1.2. The end plates 1.1, the hollow rotating shaft 1.2, and two adjacent blades 1.3 enclose a material chamber. The material box 1 is driven to rotate by the drive mechanism, and the hollow rotating shaft 1.2 is connected to the discharge port 113 via a bearing 5 and a bearing seat 10. The pressure sensor is used to measure the pressure of the material in the material box 1, and the industrial control computer calculates the material weight based on the pressure. The speed sensor is used to count the number of revolutions of the material box 1. The industrial control computer is used to control the drive mechanism and calculate the material weight based on the pressure sensor and the speed sensor.

[0031] 2. Working principle of metering gate feeder: Coarse metering: The metering gate feeder works physically. During metering, the material box 1 rotates. When a single material chamber rotates upward, the material is fed into the chamber by gravity, and the scraper scrapes the material flat. When the single material chamber rotates downward, the material is discharged by gravity. The speed sensor counts the number of rotations of the material box 1, and the industrial control computer calculates the material weight. When the drive mechanism receives the feedback signal, it stops rotating and stops feeding. Precise metering: Add a small-dose material box and adopt the principle of coaxial, concentric and different speeds to perform precise feeding and metering on the basis of completing rough metering; Box volume: V=π×(Rr) 2 × L (m 3 ); R—material box radius (m); r—radius of hollow shaft (m); L—material box length (m); V—Volume of the material box (m 3 ); Q = V x g (kg); Q - material weight in the hopper; g - material specific gravity, (kg / m 3 ); Material weight per revolution x number of revolutions = discharge weight of heavy material calculated by industrial computer.

[0032] 3. The product is designed in series, with the following parameters: (1) Blade 1.3 diameter: 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, and non-standard; (2) Hollow shaft 1.2 number of revolutions: 0-70 rpm (variable frequency adjustable); (3) Hollow shaft 1.2 length: 0.3-6 meters and non-standard; (4) Drive form: built-in explosion-proof variable frequency electric roller 2, externally connected explosion-proof variable frequency motor 3, built-in explosion-proof variable frequency external rotor motor 11; (5) Suitable materials and occasions: grains, sand, plastics, food, cement, fly ash, coal, chemical raw materials, building materials; can be used in power, metallurgy, building materials, chemical industry, food, port, logistics and other places; (6) Drive mode: built-in explosion-proof variable frequency electric roller 2, externally connected explosion-proof variable frequency motor 3 (explosion-proof frequency conversion), built-in explosion-proof variable frequency external rotor motor 11, middle drive, two-side drive, etc; (7) Hollow shaft 1.2 rotation mode: a. Discharge mode (the direction of material gravity is consistent with the direction of rotation, showing a scooping mode, characterized by fast discharge, energy saving, and no need for metering); b. Metering mode (the direction of material gravity is opposite to the direction of rotation, showing a scooping mode), which is divided into rough metering (used for internal cost accounting or production process monitoring) and accurate metering (used for trade settlement); (8) Accuracy level: different hopper and number of revolutions can be used according to accuracy requirements; The main components of the metering gate feeder are: built-in explosion-proof variable frequency electric roller 2 (with brake) or externally connected explosion-proof variable frequency motor 3 (explosion-proof frequency conversion) or built-in explosion-proof variable frequency external rotor motor 11, hopper 1, activation cone 4, iron grate, machine shell, etc. The auxiliary components of the metering gate feeder are (electrical explosion-proof): speed sensor, industrial computer, calculation software, transition chute, etc.

[0033] 4. The metering gate feeder has universality: The metering gate feeder has various combinations: single shaft, double shaft, under-bin type, side type, gate function, metering function, activation function, air locking, dust removal function, and can meet the requirements of bin opening of all new or reconstruction infrastructure projects.

[0034] Examples of combinations are as follows: (1) For example, for old cylinder bin, tank reconstruction projects: transition section + activation cone section metering feeding section + auxiliary software system; (2) For example, for new projects: side type feeding section + auxiliary software system; (3) For example, for precise metering projects: add a precise metering part to the feeding section.

[0035] Embodiment 2 The metering gate feeder provided in the embodiment is single shaft metering or double shaft metering.

[0036] In single shaft metering, the hollow shafts of the plurality of boxes 1 are arranged coaxially.

[0037] In double shaft metering, the plurality of boxes 1 are evenly divided into two groups; the hollow shafts of all boxes 1 in the same group are arranged coaxially; and the hollow shafts of the boxes 1 in different groups are arranged in parallel.

[0038] Embodiment 3 The metering gate feeder provided in the embodiment is single shaft coarse metering or single shaft precise metering.

[0039] The hollow shafts 1.2 of the plurality of boxes 1 are arranged coaxially, and the boxes 1 include two types of boxes: large-dose boxes 1a and small-dose boxes 1b.

[0040] In the figure, it is a two-shaft four-bearing, first metering integer, large-dose boxes 1a stop rotating, and then metering zero, and when enough, two shafts stop rotating together. The gate function is realized.

[0041] The precise metering is provided with a micro-arc surface pressure sensor; the end of the hollow shaft 1.2 is located outside the end plate and connected with the bearing 5; the micro-arc surface pressure sensor includes a pressure-sensitive element 6.1, a lead wire and a signal processing unit 6.2; the pressure-sensitive element 6.1 is made of artificial dihydrogen phosphate crystal, arranged between the hollow shaft 1.2 and the bearing 5, and the upper surface is provided with an arc surface adhering to the hollow shaft 1.2, and connected with the signal processing unit 6.2 through the lead wire; the signal processing unit 6.2 is used to convert the pressure stress into an electric signal.

[0042] Embodiment 4 The metering gate feeder provided in the embodiment is double shaft coarse metering or double shaft precise metering.

[0043] The plurality of material boxes 1 are evenly divided into two groups; the hollow rotating shafts 1.2 of all the material boxes 1 in the same group are coaxially arranged, and the material boxes 1 include two types of material boxes: a large-dose material box 1a and a small-dose material box 1b; the hollow rotating shafts 1.2 of the material boxes 1 in different groups are arranged in parallel.

[0044] The diagram shows four shafts and eight bearings. Two sets of cartridges 1 rotate in opposite directions. First, the whole amount is metered. The large-dose cartridge 1a stops rotating, and then the fractional amount is metered. When the full amount is reached, both shafts stop rotating together. This demonstrates the gate function.

[0045] Precisely measure and set the micro-cambered pressure sensor.

[0046] Example 5 The metering gate feeder provided in this embodiment is a built-in electric type or an external electric type.

[0047] In the built-in electric type, the driving mechanism is a built-in explosion-proof variable frequency electric drum 2; the built-in explosion-proof variable frequency electric drum 2 includes a casing, a core shaft passing through the casing, and a motor assembly that drives the casing to rotate around the core shaft, and the casing is connected to the hollow rotating shaft 1.2.

[0048] In the built-in electric feeder, the drive mechanism is a built-in explosion-proof variable-frequency external rotor motor 11. This motor 11 consists of a rotor and a stator, connected to a hollow shaft 1.2. The rotor is a magnet 11.1, and the stator is a coil 11.2. A pressure sensor 12 is installed between the hollow shaft 1.2 and the bearing 5 to accurately measure each bucket and transmit the metering signal to an industrial computer for accumulation. A brake 13 is installed on the hollow shaft 1.2. When the brake 13 is energized, the electric push rod actuates, the brake pads clamp around the hollow shaft 1.2, and the metering gate feeder stops. When power is lost, the spring force clamps the brake pads around the steel pipe shaft, stopping the feeder. Flanges 14 are installed at both ends of the hollow shaft 1.2, through which the control and power cables 11.3 of the built-in explosion-proof variable-frequency external rotor motor 11 pass.

[0049] In the external electric type, the driving mechanism is an external directly connected explosion-proof variable frequency motor 3; the end of the hollow shaft 1.2 is located outside the end plate and is connected to the external directly connected explosion-proof variable frequency motor 3.

[0050] Example 6 The metering gate feeder provided in this embodiment is an economical or enhanced type.

[0051] In the economical type, a reinforcing rib plate 1.4 is provided between two adjacent blades 1.3.

[0052] In the reinforced type, a plurality of reinforcing ribs 1.4 are provided between two adjacent blades 1.3, and the reinforcing ribs 1.4 divide the material chamber into multiple sections.

[0053] Example 7 The metering gate feeder provided by the embodiment also integrates an activation technology, which is realized by an activation cone 4 installed below the discharge port 113.

[0054] The metering gate feeder provided by the embodiment also integrates a dustproof technology, which is realized by a dust collection cover 7 installed outside the material box 1 and a dust removal system matched with the dust collection cover 7.

[0055] The metering gate feeder provided by the embodiment also integrates an ultrasonic cleaning technology, which is used for viscous materials. The technology is realized by a telescopic electric cylinder 8 and an ultrasonic cleaner 9. The cylinder body of the telescopic electric cylinder 8 is installed outside the discharge port 113. The ultrasonic cleaner 9 is installed on the piston rod of the telescopic electric cylinder 8 and used for ultrasonic cleaning of the material box 1.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A metering gate feeder, characterized in that: It includes a material box and a driving mechanism for driving the material box to rotate; The material box includes an end plate, a hollow rotating shaft and blades. The two end plates are arranged opposite to each other, and the hollow rotating shaft passes through the two end plates. Multiple blades are arranged around the hollow rotating shaft and fixedly connected to the end plates and the hollow rotating shaft. The end plates, the hollow rotating shaft and the two adjacent blades enclose a material chamber.

2. The metering gate feeder according to claim 1, characterized in that: The hollow rotating shafts of the multiple material boxes are coaxially arranged.

3. The metering gate feeder according to claim 1, characterized in that: Multiple material boxes are evenly divided into two groups; The hollow rotating shafts of all the magazines in the same group are coaxially arranged; The hollow rotating shafts of the material boxes in different groups are arranged in parallel.

4. The metering gate feeder according to claim 1, characterized in that: The hollow rotating shafts of the plurality of material boxes are coaxially arranged, and the material boxes include two types of material boxes: a large-dose material box and a small-dose material box.

5. The metering gate feeder according to claim 1, characterized in that: Multiple material boxes are evenly divided into two groups; The hollow rotating shafts of all the material boxes in the same group are coaxially arranged, and the material boxes include two types of material boxes: large-dose material boxes and small-dose material boxes; The hollow rotating shafts of the material boxes in different groups are arranged in parallel.

6. The metering gate feeder according to any one of claims 1 to 5, characterized in that: The driving mechanism is a built-in explosion-proof variable frequency outer rotor motor; The built-in explosion-proof variable frequency outer rotor motor includes a rotor and a stator, and the rotor is connected to the hollow shaft; Or, the driving mechanism is a built-in explosion-proof variable frequency electric roller; The built-in explosion-proof variable frequency electric drum includes a casing, a core shaft passing through the casing, and a motor assembly driving the casing to rotate around the core shaft, and the casing is connected to the hollow rotating shaft; Or, the driving mechanism is an external directly connected explosion-proof variable frequency motor; The end of the hollow rotating shaft is located outside the end plate and is connected to an external direct-connected explosion-proof variable frequency motor.

7. The metering gate feeder according to any one of claims 1 to 5, characterized in that: A reinforcing rib is provided between two adjacent blades, which divides the material chamber into multiple sections; The and / or metering gate feeder further comprises an activation cone installed below the discharge port and a dust collecting hood installed outside the material box.

8. The metering gate feeder according to any one of claims 1 to 5, characterized in that: Also includes telescopic electric cylinder and ultrasonic cleaner; The cylinder body of the telescopic electric cylinder is installed outside the discharge port; The ultrasonic cleaner is mounted on the piston rod of the telescopic electric cylinder and is used for ultrasonically cleaning the material box.

9. The metering gate feeder according to any one of claims 1 to 5, characterized in that: It also includes pressure sensors, speed sensors and industrial computers; The pressure sensor is used to measure the pressure of the material in the material box; The speed sensor is used to count the number of rotations of the material box; The industrial control computer is used to control the driving mechanism and calculate the material weight according to the pressure sensor and the speed sensor.

10. The metering gate feeder according to claim 4 or 5, characterized in that: Also included is a miniature arc-shaped pressure sensor; The end of the hollow rotating shaft is located outside the end plate and is connected to the bearing; The micro arc surface pressure sensor includes a pressure sensitive element, a lead and a signal processing unit; The pressure-sensitive element is made of artificial diammonium phosphate crystals, is arranged between the hollow shaft and the bearing, has an arc surface on its upper surface that fits the hollow shaft, and is connected to the signal processing unit via a lead wire; The signal processing unit is used to convert the compressive stress into an electrical signal.

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