CN111071711A - Automatic double-pipe spiral feeding machine - Google Patents
Automatic double-pipe spiral feeding machine Download PDFInfo
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- CN111071711A CN111071711A CN201911336119.5A CN201911336119A CN111071711A CN 111071711 A CN111071711 A CN 111071711A CN 201911336119 A CN201911336119 A CN 201911336119A CN 111071711 A CN111071711 A CN 111071711A
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- pipeline
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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
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
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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
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
- B65G33/18—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing with multiple screws in parallel arrangements, e.g. concentric
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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
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/34—Applications of driving gear
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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
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
- B65G2203/0291—Speed of the load carrier
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
- Screw Conveyors (AREA)
Abstract
The invention relates to an automatic double-pipe screw feeder which comprises a double-pipe screw feeding mechanism and a control system, wherein the double-pipe screw feeding mechanism comprises a first feeding mechanism and a second feeding mechanism which are connected in parallel, the first feeding mechanism comprises a first pipeline and a first screw blade, and the first screw blade is arranged in the first pipeline; the first helical blade is fixedly connected with a first main shaft at the center of the first pipeline, and the left end of the first main shaft is connected with an output shaft of the first driving mechanism through a coupler; the first driving mechanism drives the first driving mechanism to rotate; the invention conveys the materials together by two duplex parallel spiral conveying mechanisms, the first conveying mechanism provides main output quantity, and the second conveying mechanism balances the fluctuation of the output quantity of the first conveying mechanism, thereby maintaining the integral output quantity and improving the feeding precision.
Description
Technical Field
The invention belongs to the technical field of double-pipe screw feeders, and particularly relates to an automatic double-pipe screw feeder.
Background
The spiral feeding is a product integrating steady flow conveying, weighing and metering and quantitative control of powder materials, is suitable for continuous metering and batching of powder materials in various industrial production environments, and is particularly suitable for continuous metering and batching of powder materials in industries such as building materials, metallurgy, electric power, chemical industry and the like.
Twin screw volumetric feeders are widely used for a variety of materials, including powdered, fibrous and flaked materials of poor flowability. All parts in contact with the materials are made of stainless steel, and the feeding machine is easy to clean and replace parts.
The conveying capacity is influenced by two variables of material filling coefficient and rotating speed, the actual material filling coefficient is continuously changed due to the influence of material feeding and various factors, and if the rotating speed is inconvenient to maintain, the actual conveying capacity is continuously changed.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide an automated double-tube screw feeder in which the feeding is more accurate.
The invention realizes the purpose through the following technical scheme:
an automatic double-pipe spiral feeding machine comprises a double-pipe spiral feeding mechanism and a control system, wherein the double-pipe spiral feeding mechanism comprises a first feeding mechanism and a second feeding mechanism which are connected in parallel, the first feeding mechanism comprises a first pipeline and a first spiral blade, and the first spiral blade is arranged inside the first pipeline; the first helical blade is fixedly connected with a first main shaft at the center of the first pipeline, and the left end of the first main shaft is connected with an output shaft of the first driving mechanism through a coupler; the first driving mechanism drives the first driving mechanism to rotate;
the second feeding mechanism comprises a second pipeline, a second main shaft and a second spiral blade, the second spiral blade is arranged inside the second pipeline and fixedly arranged on the second main shaft, the second main shaft is arranged at the center of the second pipeline, a section of empty section space is arranged between the left end of the second spiral blade and the left end of the second pipeline, a filling limiting mechanism is arranged in the empty section space, the filling limiting mechanism limits the actual material filling coefficient in the second pipeline to be smaller than the standard filling coefficient of the material, the material filling coefficient cannot fluctuate, and stable conveying capacity is obtained.
The second main shaft is connected with a second driving mechanism at the left end of the first pipeline and is driven to rotate by the second driving mechanism.
The control system comprises a first rotating speed sensor, an analog signal input module, an amplification module, an analog-to-digital converter, a microprocessor, a coupler, a first control signal output module and a second control signal output module, wherein the first rotating speed sensor is connected with a first spindle and used for monitoring the rotating speed of the first spindle, the signal output end of the first rotating speed sensor is connected with the analog signal input module, the analog signal input module is connected with the analog-to-digital converter through the amplification module, the amplification module is used for amplifying an analog signal, the analog-to-digital converter is used for converting the analog signal into a digital signal, the signal output end of the analog-to-digital converter is connected with the signal input end of the microprocessor, the signal output end of the microprocessor is respectively connected with the first control signal output module and the second control signal output module through the coupler, the signal output end of the first, and the signal output end of the second control signal output module is connected with the signal input end of the second driving mechanism.
As a further optimized scheme of the invention, the filling limiting mechanism is a limiting plate which is fixedly connected with the upper part inside the second pipeline, a gap is formed between the lower edge of the limiting plate and the second pipeline, the gap is a passage through which materials pass, and the materials pass through the passage and enter the space on the right side of the limiting plate, so as to obtain a stable material filling coefficient.
As a further optimization scheme of the invention, the starting end of the second helical blade is positioned at the right side of the filling limiting mechanism. Avoiding the conflict between the two.
As a further optimized scheme of the invention, the left end of the second main shaft is connected with an output shaft of the second driving mechanism through a coupler.
As a further optimization scheme of the invention, the top of the left end of the first pipeline is provided with a feeding hole, and the bottom of the right end of the first pipeline is provided with a discharging hole.
As a further optimized scheme of the invention, the top of the left end of the second pipeline is provided with a feeding hole, and the bottom of the right end of the second pipeline is provided with a discharging hole.
As a further optimization scheme of the invention, the control system further comprises a second speed sensor, the second speed sensor is connected with the second main shaft, the signal output end of the second rotating speed sensor is connected with an analog signal input module, the analog signal input module is connected with an analog-to-digital converter through an amplification module, and the signal output end of the analog-to-digital converter is connected with the signal input end of the microprocessor. The second speed sensor sends an actual rotating speed signal of the second main shaft to the microprocessor, and the microprocessor can carry out closed-loop control on the rotating speed of the second driving mechanism according to the comparison between the actual rotating speed of the second speed sensor and the set rotating speed.
The invention has the beneficial effects that:
1) the invention conveys the materials together by two duplex parallel spiral conveying mechanisms, the first conveying mechanism provides main output quantity, and the second conveying mechanism balances the fluctuation of the output quantity of the first conveying mechanism, thereby maintaining the integral output quantity and improving the feeding precision.
Drawings
FIG. 1 is a schematic structural diagram of the present invention in accordance with one embodiment;
FIG. 2 is a schematic diagram of the internal structure of the present invention according to the first embodiment;
FIG. 3 is a schematic structural diagram of a control system according to the present invention in accordance with one embodiment;
fig. 4 is a schematic structural diagram of a control system according to the second embodiment of the present invention.
In the figure: the device comprises a first pipeline 1, a first helical blade 2, a first main shaft 3, a first driving mechanism 4, a second pipeline 5, a second main shaft 6, a second helical blade 7, a second driving mechanism 8 and a filling limiting mechanism 9.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; in the description of the present invention, the meaning of "plurality" or "a plurality" is two or more unless otherwise specified.
Example one
As shown in fig. 1-3, an automatic double-tube screw feeder comprises a double-tube screw feeding mechanism and a control system, wherein the double-tube screw feeding mechanism comprises a first feeding mechanism and a second feeding mechanism which are connected in parallel, the first feeding mechanism comprises a first pipeline 1 and a first screw blade 2, and the first screw blade 2 is arranged in the first pipeline 1; the first helical blade 2 is fixedly connected with a first main shaft 3 in the center of the first pipeline 1, and the left end of the first main shaft 3 is connected with an output shaft of a first driving mechanism 4 through a coupler; the rotation is driven by the first drive mechanism 4.
The second feeding mechanism comprises a second pipeline 5, a second main shaft 6 and a second spiral blade 7, the second spiral blade 7 is arranged inside the second pipeline 5 and fixedly arranged on the second main shaft 6, the second main shaft 6 is arranged at the center of the second pipeline 5, a section of empty space is arranged between the left end of the second spiral blade 7 and the left end of the second pipeline 5, a filling limiting mechanism 9 is arranged in the empty space, and the filling limiting mechanism 9 limits the actual material filling coefficient in the second pipeline 5 to be smaller than or far smaller than the standard filling coefficient of the material, so that the material filling coefficient cannot fluctuate, and stable conveying capacity is obtained. For example, if the filling factor of wheat is δ equal to 0.45, then the actual filling factor is less than 0.45.
The second main shaft 6 is connected with a second driving mechanism 8 at the left end of the first pipeline 1 and is driven to rotate by the second driving mechanism 8.
Preferably, fill stop gear 9 and be a limiting plate, this limiting plate fixed connection second pipeline 5 inside upper portion, constitute a breach between the lower edge of limiting plate and the second pipeline 5, this breach is the passageway that the material passed through promptly, and the material passes through in this passageway gets into the space on limiting plate right side to obtain stable material filling coefficient.
Preferably, the starting end of the second helical blade 7 is located to the right of the filling stop 9. Avoiding the conflict between the two.
Preferably, the left end of the second main shaft 6 is connected with the output shaft of the second driving mechanism 8 through a coupler.
Preferably, the top of the left end of the first pipeline 1 is provided with a feeding hole, and the bottom of the right end is provided with a discharging hole.
Preferably, the top of the left end of the second pipeline 5 is provided with a feeding hole, and the bottom of the right end is provided with a discharging hole.
Preferably, the second pipeline 5 is also provided with a vibration mechanism for breaking the arch.
The control system comprises a first rotating speed sensor, an analog signal input module, an amplification module, an analog-to-digital converter, a microprocessor, a coupler, a first control signal output module and a second control signal output module, wherein the first rotating speed sensor is connected with the first spindle 3 and used for monitoring the rotating speed of the first spindle 3, the signal output end of the first rotating speed sensor is connected with the analog signal input module, the analog signal input module is connected with the analog-to-digital converter through the amplification module and used for amplifying an analog signal, the analog-to-digital converter is used for converting the analog signal into a digital signal, the signal output end of the analog-to-digital converter is connected with the signal input end of the microprocessor, the signal output end of the microprocessor is respectively connected with the first control signal output module and the second control signal output module through the coupler, the signal output end of the first control signal output module is, the signal output end of the second control signal output module is connected with the signal input end of the second driving mechanism 8.
The first feeding mechanism and the second feeding mechanism are both spiral feeding mechanisms, and the conveying capacity can be calculated by adopting the following formula:
Q＝47β×δ×ρ×D2×S×n；
q- - -conveying capacity (t/h), β is 1, delta- - -material filling coefficient, rho- - -material volume weight (t/m3), D- - -spiral blade diameter (m), n- - -rotating speed (r/min), S- - -screw pitch (m);
it can be seen from the above formula that the conveying capacity is influenced by two variables of the material filling coefficient and the rotating speed, the actual material filling coefficient is continuously changed due to the influence of material feeding and various factors, and if the rotating speed is inconvenient to maintain, the actual conveying capacity is continuously changed.
Now, the feeding is carried out by two parallel feeding mechanisms together, and the first feeding mechanism obtains a stable actual material filling coefficient due to the limitation of the filling limiting mechanism 9, so that the first feeding mechanism has a stable conveying amount Q2;
the second feeding mechanism does not limit material filling, and is used as a main conveying mechanism for providing main conveying amount Q1, the microprocessor receives signals of the rotating speed sensor and processes the signals, firstly, the actual rotating speed is compared with the set rotating speed to obtain a difference value, the first control signal output module is used for carrying out closed-loop control on the first driving mechanism 4 to adjust the rotating speed, on the other hand, the change of the rotating speed is changed by the change of an actual material filling coefficient and is in direct proportion, therefore, the change of the actual material filling coefficient can be calculated according to the change of the rotating speed, the difference value between the actual conveying amount and the set conveying amount can be calculated according to a formula, the difference value is a value which is required to be increased and decreased by Q2, the value which is required to be increased and decreased by the rotating speed can be calculated according to the increasing and decreasing value of Q2, and the rotating speed of the second.
The adjustment is made according to the following formula: the total delivery Q is Q1+ Q2, and it can be seen from the above formula that when Q1 is deviated, Q2 can be adjusted so that Q is constant.
Example two
As shown in fig. 4, on the basis of the first embodiment, the control system further includes a second speed sensor, the second speed sensor is connected to the second spindle 6, a signal output end of the second speed sensor is connected to the analog signal input module, the analog signal input module is connected to the analog-to-digital converter through the amplifying module, and a signal output end of the analog-to-digital converter is connected to a signal input end of the microprocessor.
The second speed sensor sends an actual rotating speed signal of the second main shaft 6 to the microprocessor, and the microprocessor can carry out closed-loop control on the rotating speed of the second driving mechanism 8 according to the comparison between the actual rotating speed of the second speed sensor and the set rotating speed.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. An automatic double-barrelled screw feeder which characterized in that: the double-pipe spiral feeding mechanism comprises a first feeding mechanism and a second feeding mechanism which are connected in parallel, the first feeding mechanism comprises a first pipeline and a first spiral blade, and the first spiral blade is arranged in the first pipeline; the first helical blade is fixedly connected with a first main shaft at the center of the first pipeline, and the left end of the first main shaft is connected with an output shaft of the first driving mechanism through a coupler; the first driving mechanism drives the first driving mechanism to rotate;
the second feeding mechanism comprises a second pipeline, a second main shaft and a second spiral blade, the second spiral blade is arranged inside the second pipeline and fixedly arranged on the second main shaft, the second main shaft is arranged in the center of the second pipeline, a section of empty space is arranged between the left end of the second spiral blade and the left end of the second pipeline, and a filling limiting mechanism is arranged in the empty space;
the second main shaft is connected with a second driving mechanism at the left end of the first pipeline and is driven to rotate by the second driving mechanism;
the control system comprises a first rotating speed sensor, an analog signal input module, an amplification module, an analog-to-digital converter, a microprocessor, a coupler, a first control signal output module and a second control signal output module, wherein the first rotating speed sensor is connected with a first spindle and used for monitoring the rotating speed of the first spindle, the signal output end of the first rotating speed sensor is connected with the analog signal input module, the analog signal input module is connected with the analog-to-digital converter through the amplification module, the amplification module is used for amplifying an analog signal, the analog-to-digital converter is used for converting the analog signal into a digital signal, the signal output end of the analog-to-digital converter is connected with the signal input end of the microprocessor, the signal output end of the microprocessor is respectively connected with the first control signal output module and the second control signal output module through the coupler, the signal output end of the first, and the signal output end of the second control signal output module is connected with the signal input end of the second driving mechanism.
2. An automated dual tube screw feeder according to claim 1, wherein: the filling limiting mechanism is a limiting plate which is fixedly connected with the upper part inside the second pipeline, and a gap is formed between the lower edge of the limiting plate and the second pipeline.
3. An automated dual tube screw feeder according to claim 1, wherein: the starting end of the second helical blade is positioned on the right side of the filling limiting mechanism.
4. An automated dual tube screw feeder according to claim 1, wherein: the left end of the second main shaft is connected with an output shaft of the second driving mechanism through a coupler.
5. An automated dual tube screw feeder according to claim 1, wherein: the top of the left end of the first pipeline is provided with a feeding hole, and the bottom of the right end of the first pipeline is provided with a discharging hole.
6. An automated dual tube screw feeder according to claim 1, wherein: the top of the left end of the second pipeline is provided with a feeding hole, and the bottom of the right end of the second pipeline is provided with a discharging hole.
7. An automated dual tube screw feeder according to claim 1, wherein: the control system further comprises a second speed sensor, the second speed sensor is connected with the second main shaft, the signal output end of the second rotating speed sensor is connected with the analog signal input module, the analog signal input module is connected with the analog-to-digital converter through the amplification module, and the signal output end of the analog-to-digital converter is connected with the signal input end of the microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911336119.5A CN111071711B (en) | 2019-12-23 | 2019-12-23 | Automatic double-pipe spiral feeding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911336119.5A CN111071711B (en) | 2019-12-23 | 2019-12-23 | Automatic double-pipe spiral feeding machine |
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| Publication Number | Publication Date |
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| CN111071711A true CN111071711A (en) | 2020-04-28 |
| CN111071711B CN111071711B (en) | 2021-10-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB182210A (en) * | 1921-03-30 | 1922-06-30 | William Henry Lieber | Conveyer |
| CN202575291U (en) * | 2012-04-10 | 2012-12-05 | 安徽省工力机械设备有限公司 | Double-pipe screw feeding machine |
| CN205662004U (en) * | 2016-05-26 | 2016-10-26 | 阳泉天隆工程材料有限公司 | Single double -barrelled feeding machine material flows adjusting device |
| CN109230303A (en) * | 2018-10-22 | 2019-01-18 | 欣好科技有限公司 | A kind of auger conveyor |
-
2019
- 2019-12-23 CN CN201911336119.5A patent/CN111071711B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB182210A (en) * | 1921-03-30 | 1922-06-30 | William Henry Lieber | Conveyer |
| CN202575291U (en) * | 2012-04-10 | 2012-12-05 | 安徽省工力机械设备有限公司 | Double-pipe screw feeding machine |
| CN205662004U (en) * | 2016-05-26 | 2016-10-26 | 阳泉天隆工程材料有限公司 | Single double -barrelled feeding machine material flows adjusting device |
| CN109230303A (en) * | 2018-10-22 | 2019-01-18 | 欣好科技有限公司 | A kind of auger conveyor |
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| CN111071711B (en) | 2021-10-12 |
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