Quantitative conveying device for dried fruits

Abstract

The invention discloses a dry fruit quantitative conveying device which comprises a rack and a material level controller, an electromagnetic vibration feeding mechanism and a storage hopper are arranged on the rack, and the material level controller comprises a control unit and a material level detection unit; the material level detection unit is arranged on the storage hopper and / or the rack and can detect the accumulation amount of dried fruits (raisins) in the storage hopper in real time. The control unit controls a feeding mechanism for conveying the dried fruits into the storage hopper to start and stop according to the collected current dried fruit accumulation amount in the storage hopper, and then indirectly controls the accumulation amount of the dried fruits entering the raisin rough machining unit; the electromagnetic vibration feeding mechanism conveys the dried fruits to the raisin rough machining unit according to the electromagnetic vibration principle. Compared with an existing mechanical conveying mechanism, the dried fruits can be conveyed in a continuous and uniform mode, limited adjustment of the output amount / supply amount of the dried fruits (raisins) in unit time can be achieved, and the actual market requirement of existing raisin rough machining is met.

Description

Technical Field

[0001] The invention belongs to the dry fruit rough processing technology, and in particular relates to a dry fruit quantitative conveying device. Background Art

[0002] In the Turpan Basin of Xinjiang, generally speaking, the processing procedures of raisins produced in Turpan mainly include rough processing (vibration screening, impurity removal (primary dust removal), etc.) and fine processing (water washing (secondary dust removal / mud removal), drying, etc.). Especially in the rough processing stage of raisins, the existing raisin rough processing units will be used to process the raisins (including vibration screening, impurity removal, etc.) to reduce the amount of dried fruit accumulation.

[0003] At present, raisins are often poured into the existing raisin vibrating screening conveyor in batches, and then screened and conveyed to the elevator by the existing vibrating screening conveyor (the existing raisin vibrating screening conveyor plays the role of pre-screening and conveying. In the process of vibrating and conveying raisins, the raisins that are clumped together and the larger and branched raisin stems (i.e. dry grape stems, commonly known as grape stems in Xinjiang) are screened out, and the remaining raisins are conveyed to the elevator), and then conveyed to the rough processing unit by the elevator (because the raisin feeding side of the rough processing unit is located at a higher position, it is necessary to use the elevator to convey the raisins to the raisin feeding side of the rough processing unit located at a higher position). However, in the actual situation, the raisin feeding amount / supply of the raisins delivered to the raisin feeding side of the rough processing unit per unit time by the elevator is The amount is obviously greater than the effective qualified processing amount of raisins per unit time of the rough processing unit. Since the raisin rough processing unit rough processes the raisins in the process of driving the excess raisins forward by vibrating and throwing, the raisin rough processing unit is forced to be unable to timely carry out relatively sufficient and thorough rough processing (screening and removing impurities) on the excess raisins moving forward, resulting in the deterioration of the rough processing quality of the raisins, which is equivalent to the raisin rough processing unit overloading the raisins, so that the accumulated raisins processed out of the rough processing are mixed with a large number of raisin stems and dust. This is because the raisin rough processing unit has its own maximum rough processing amount per unit time. In order to basically guarantee the rough processing quality of raisins, it is necessary to ensure that the raisin supply on the raisin feed side of the rough processing unit is not greater than its own maximum rough processing amount per unit time.

[0004] It can be seen that an excessive amount of raisin feeding amount per unit time (the raisin conveying amount / supply amount on the raisin feeding side of the rough processing unit is greater than its maximum rough processing amount per unit time) will affect the screening and impurity removal (dust removal) effect of the raisin rough processing unit. It is also not easy to manually quantitatively adjust and control the amount of dried fruits (raisins) conveyed by the elevator to the rough processing unit per unit time, that is, it is not easy to manually limit and control the amount of dried fruits (raisins) conveyed by the elevator to the rough processing unit per unit time. Therefore, it is necessary to control the raisin feeding amount conveyed / supplied to the raisin rough processing unit, so that the raisin conveying amount / supply amount on the raisin feeding side conveyed by the elevator to the rough processing unit per unit time is close to the effective qualified processing amount of raisins per unit time of the rough processing unit, in order to achieve the purpose of making the rough processing unit process raisins qualified and effectively.

[0005] Based on the above analysis of the existing background technology problems, the present invention specifically proposes this dried fruit quantitative conveying device in combination with the actual situation of raisin rough processing in Turpan. Summary of the Invention

[0006] The present invention provides a dried fruit quantitative conveying device to solve the technical problem that it is not easy to manually limit and control the amount of dried fruits (raisins) conveyed by the elevator to the dried fruit rough processing unit per unit time, and achieve the technical purpose of quantitatively conveying or feeding raisins to the raisin rough processing unit.

[0007] The present invention provides a dried fruit quantitative conveying device: including a frame and a level controller. An electromagnetic vibration feeding mechanism and a storage hopper are provided on the frame. The storage hopper is erected above the electromagnetic vibration feeding mechanism to provide dried fruits to the electromagnetic vibration feeding mechanism. The level controller includes a control unit and a level detection unit. The level detection unit is arranged on the storage hopper and / or the frame, and is used to detect the accumulated amount of dried fruits in the storage hopper. The control unit can control the start and stop of the feeding mechanism for conveying dried fruits into the storage hopper according to the accumulated amount signal of dried fruits obtained by the level detection unit.

[0008] As a preferred solution of the present invention: the level detection unit includes a photoelectric sensor and / or a gravity sensor; when it is a photoelectric sensor, the photoelectric sensor includes at least two groups, which are respectively arranged on the side walls inside the storage hopper to detect the high and low levels in the storage hopper respectively; when it is a gravity sensor, the gravity sensor includes multiple groups, which are respectively arranged at each bearing point at the bottom of the frame.

[0009] As a preferred solution of the present invention: the frame includes a base and a bracket. The bracket is located above the base, and the gravity sensor is arranged between the base and the bracket to collect the gravity from the bracket.

[0010] As a preferred embodiment of the present invention: The electromagnetic vibration feeding mechanism includes an electromagnetic vibration unit and a vibration trough. The electromagnetic vibration unit is arranged on one side of the vibration trough to drive the vibration trough to periodically throw the dried fruits forward; the bottom of the vibration trough is fixedly arranged on the frame through a vibration bracket.

[0011] As a preferred embodiment of the present invention: The vibration bracket includes multiple groups of support plates arranged along the axial direction of the vibration trough and inclined. The inclination direction of the support plate is opposite to the throwing direction of the dried fruits.

[0012] As a preferred embodiment of the present invention: The support plate is a fiberglass board.

[0013] As a preferred embodiment of the present invention: A guide trough is arranged at the discharge end of the vibration trough. The guide trough is fixed to one side of the frame through a support rod.

[0014] As a preferred embodiment of the present invention: The storage hopper is erected above the vibration trough through a support frame. Among them, the distance between the feeding port of the storage hopper and the bottom of the vibration trough is 1 - 2 cm.

[0015] As a preferred embodiment of the present invention: Blocking blocks are arranged in the gaps on both sides of the feeding port of the vibration trough and the storage hopper. The blocking blocks are used to guide the dried fruits from the feeding port to move along the throwing direction.

[0016] As a preferred embodiment of the present invention: The feeding mechanism for conveying dried fruits into the storage hopper includes a hoist and a vibrating screen. The control unit is connected to the drive motor of the vibrating screen to control the start and stop of the drive motor according to the dried fruit accumulation amount signal obtained by the material level detection unit.

[0017] To solve the actual problem of "the conveying amount / supply amount of raisins on the feeding side of the raisin roughing unit per unit time by the hoist is significantly greater than the effective qualified processing amount of raisins of the raisin roughing unit per unit time", the present invention must be installed between the hoist and the raisin roughing unit. The hoist specifically adopts a chain plate hoist suitable for lifting and conveying dried fruits such as raisins. The feeding port opened at the uppermost end of the storage hopper of the present invention is arranged directly below the discharge side of the hoist, so that the raisins output from the discharge side of the hoist fall into the storage hopper entirely by gravity through the feeding port opened at the uppermost end of the storage hopper. The raisin feeding side of the raisin roughing unit is arranged directly below the discharge end (guide trough) of the vibration trough of the present invention, so that the raisins output from the discharge end of the vibration trough fall entirely by gravity onto the feeding side of the raisin roughing unit.

[0018] The overall working principle of the present invention is as follows: The raisins input from the elevator to the vibrating screening conveyor (vibrating screen) and output from its discharge side are added to the storage hopper of the present invention. During the process of the raisins being added to the storage hopper by the elevator that cooperates to convey dried fruits to the present invention, the control unit of the present invention controls the electromagnetic coil to stop applying alternating current, and the vibrating trough of the present invention will naturally not vibrate to convey raisins. The vibrating screening conveyor that cooperates with the elevator to convey dried fruits is in a working state (the eccentric vibrating motor keeps running). When the accumulated amount of raisins in the storage hopper approaches or reaches the maximum rated carrying capacity / accumulated amount of the storage hopper, the control unit of the present invention will automatically control the eccentric vibrating motor (vibrator) of the vibrating screening conveyor to stop running (when the vibrating screening conveyor stops working (the eccentric vibrating motor stops running), it is normal that usually a part of the raisins stay in the vibrating screening conveyor, which will not affect the working performance of the vibrating screening conveyor itself), so as to stop adding raisins to the storage hopper of the present invention through the elevator. Keep the elevator running continuously, and the elevator will lift and add all the little raisins conveyed to it by the vibrating screening conveyor before the last shutdown to the storage hopper (the accumulated amount of the little raisins added to the storage hopper accounts for a very small proportion of the maximum rated carrying capacity / accumulated amount of the storage hopper. Therefore, the sum of the accumulated amount of the last remaining little raisins added to the storage hopper by the elevator and the accumulated amount of the vast majority of raisins added to the storage hopper by the elevator before will not exceed the maximum rated carrying capacity / accumulated amount of the storage hopper), and the control unit immediately controls the electromagnetic coil to apply alternating current, driving the vibrating trough to drive the raisins that fall and accumulate in the vibrating trough through the feeding port opened at the bottommost end of the storage hopper to move forward and successively add them to the raisin feeding side of the rough processing unit. The rough processing unit starts to continuously and effectively rough process the raisins added to its feeding side. When the vibrating trough adds almost all the raisins in the storage hopper to the raisin feeding side of the rough processing unit through vibration, the storage hopper is emptied and there is basically no raisin accumulation. The control unit will automatically control the eccentric vibrating motor of the vibrating screening conveyor to be powered on and run, and at the same time control the electromagnetic coil to stop applying alternating current. The vibrating screening conveyor continues to screen and convey the raisins temporarily left in it before the last stop and the raisins continuously poured in by workers subsequently to the feeding side at the lower end of the elevator, and then the elevator will convey the raisins it holds through its discharge side at the upper end to the storage hopper. When the raisins in the storage hopper accumulate to the maximum rated carrying capacity / accumulated amount of the storage hopper again, the control unit will control the eccentric vibrating motor of the vibrating screening conveyor to stop running again, and immediately control the electromagnetic coil to apply alternating current, and so on, thus keeping the present invention working in a cyclic and periodic manner. To sum up, the maximum rated carrying capacity / accumulated amount of raisins of the present invention (storage hopper) is roughly quantitatively matched and equal to the effective qualified processing amount of raisins per unit time of the raisin rough processing unit. For a more specific working principle of the present invention, please refer to the following detailed implementation manners.

[0019] Compared with the prior art, the advantages of the dried fruit quantitative conveying device are as follows: the device is a quantitative feeder that can adjust the output / supply amount of dried fruit per unit time in real time. This device is arranged on the feeding side of the existing raisin rough processing unit (vibrating screening + impurity removal (raisin stalks, dust)), and it includes a frame and a material level controller. The frame is provided with an electromagnetic vibration feeding mechanism and a storage hopper. The material level controller includes a control unit and a material level detection unit; the material level detection unit is arranged on the storage hopper and / or the frame, and can detect the accumulation amount of dried fruit (raisins) in the storage hopper in real time. The control unit controls the start and stop of the feeding mechanism for conveying dried fruit into the storage hopper according to the currently collected accumulation amount of dried fruit in the storage hopper, and indirectly controls the accumulation amount of raisins entering the raisin rough processing unit to ensure that the accumulation amount of dried fruit entering the raisin rough processing unit meets the actual requirements, and avoids the problem that the impurity removal effect of the raisin rough processing unit is poor due to adding excessive dried fruit; the electromagnetic vibration feeding mechanism uses the principle of electromagnetic vibration to convey dried fruit to the raisin rough processing unit. Compared with the existing mechanical conveying mechanism, it can not only convey dried fruit (raisins) in an intermittent and equal amount manner, but also is convenient for quantitative control. By adjusting the current magnitude, the amplitude or frequency of the permanent magnet core / vibration trough 22 can be adjusted to achieve precise control of the dried fruit feeding amount, and it can flexibly adapt to different raisin rough processing output requirements; the dried fruit quantitative conveying device realizes the matching and transitional connection between the raisin conveying amount / supply amount per unit time conveyed by the bucket elevator to the feeding side of the rough processing unit and the effective qualified processing amount of raisins per unit time of the rough processing unit through mechatronic automation. While keeping the dried fruit output amount per unit time of the dried fruit elevator and the maximum dried fruit output amount per unit time of the present invention (storage hopper) both less than or approximately equal to the maximum dried fruit rough processing amount per unit time of the raisin rough processing unit itself, the present invention can adjust the raisin conveying amount / supply amount per unit time conveyed by the bucket elevator to the feeding side of the rough processing unit to the effective qualified processing amount of raisins per unit time of the rough processing unit through the method of metering and delaying storage, realizing the limited adjustment of the output / supply amount of dried fruit (raisins) per unit time to meet the actual market demand of the existing raisin rough processing today. Description of the Drawings

[0020] Figure 1 It is the front view structural schematic diagram of the dried fruit quantitative conveying device provided by the embodiment of the present invention.

[0021] Figure 2 It is the position relationship diagram between the electromagnetic vibration feeding mechanism and the storage hopper provided by the embodiment of the present invention.

[0022] Figure 3 It is the control principle diagram of the material level controller provided by the embodiment of the present invention. Reference Signs

[0023] 1. Frame; 11. Base; 12. Support; 2. Electromagnetic vibration feeding mechanism; 21. Electromagnetic vibration unit; 22. Vibration trough; 3. Storage hopper; 31. Support frame; 4. Vibration support; 51. Photoelectric sensor; 52. Gravity sensor; 6. Feeding mechanism; 7. Loading mechanism; 8. Vibration sieve; 9. Guide chute; 91. Support rod; 01. Blocking block; 02. Support plate. Detailed implementation mode

[0024] The present invention will be further described in detail below in combination with the specific implementation mode and with reference to the attached drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0025] As Figure 1 shown, a dried fruit quantitative conveying device provided in this embodiment includes a frame 1 and a material level controller. The frame 1 is a support frame structure, on which an electromagnetic vibration feeding mechanism 2 and a storage hopper 3 are provided. A support frame 31 is also fixedly installed on the frame 1. The storage hopper 3 is installed above the electromagnetic vibration feeding mechanism 2 through the support frame 31 to supply / transport dried fruits to the electromagnetic vibration feeding mechanism 2; the material level controller includes a control unit and a material level detection unit. The material level detection unit is arranged on the storage hopper 3 and / or the frame 1 and is used to detect the accumulation amount of dried fruits in the storage hopper 3. The control unit can control the start and stop of the feeding mechanism 6 for transporting dried fruits into the storage hopper 3 according to the dried fruit accumulation amount signal obtained by the material level detection unit.

[0026] The electromagnetic vibration feeding mechanism 2 generally belongs to the prior art, which includes an electromagnetic vibration unit 21 composed of an electromagnetic coil, a permanent magnet core, etc. customized based on the prior art, and a vibrating trough 22. The electromagnetic coil (winding) is composed of enameled copper wire and is generally fixedly wound into a tubular shape on a rigid tubular body. The rigid tubular body serves to fixedly carry the electromagnetic coil and keep the electromagnetic coil fixedly wound into a tubular shape. The main body of the permanent magnet core is suspended inside the electromagnetic coil (the tubular body formed by winding the electromagnetic coil or the rigid tubular body), that is, the electromagnetic coil is fixedly arranged in a manner of surrounding the permanent magnet core, and the permanent magnet core and the electromagnetic coil (rigid tubular body) do not contact each other. However, in the present invention, the permanent magnet core must be directly or indirectly fixed on the vibrating trough 22, and the rigid tubular body is directly or indirectly fixed on the support frame 31, or the support plate 02, or the machine frame 1 (the support 12 or the base 11). The electromagnetic coil is correspondingly directly or indirectly fixed on the support frame 31 or the support plate 02 through the rigid tubular body, and of course, it can also be directly or indirectly fixed on the machine frame 1 (the support 12 or the base 11). The support plate 02 is fixedly arranged at the lower part of the machine frame 1;Tests show that: If the permanent magnet core is directly or indirectly fixedly installed on the support frame 31, or the pallet 02, or the machine frame 1, and the electromagnetic coil is directly or indirectly fixed on the vibrating trough 22, then the electromagnetic coil will be significantly close to the vibrating trough 22, and the main body of the alternating magnetic field generated by the alternating current loaded in the electromagnetic coil can significantly act on the vibrating trough 22. Since the vibrating trough 22 is usually made of steel or other alloys, and steel or other ordinary alloys are electrically conductive objects, in this way, the alternating magnetic field generated by the alternating current loaded in the electromagnetic coil and the bottom plate of the vibrating trough 22 can easily interact with each other through the alternating magnetic field, so that an electromagnetic eddy current with a periodic forward or reverse flow of current appears in the bottom plate of the vibrating trough 22. Because the steel or other ordinary alloys that make up the vibrating trough 22 have a relatively large resistance, and the alternating current loaded in the electromagnetic coil has a relatively large current (due to the total weight of the raisins piled up in the vibrating trough 22 and the storage hopper 3 being very large, in order to make the vibrating trough have sufficient vibration force through the alternating magnetic field without contact, the alternating current loaded in the electromagnetic coil is relatively large), the intensity of the alternating magnetic field generated by the alternating current is correspondingly stronger, and the electromagnetic eddy current will heat the bottom plate of the vibrating trough 22. As long as the electromagnetic coil keeps loading a large alternating current and the raisins fall from the discharge opening at the bottom end of the storage hopper 3 onto the bottom surface of the vibrating trough 22, the bottom plate of the vibrating trough 22 will continuously heat up and easily heat the raisins that are moving towards the discharge end of the vibrating trough 22 under the vibration and throwing action of the vibrating trough 22 on the bottom surface of the vibrating trough 22 at this time, resulting in the overheating of the raisins that directly fall and contact the bottom plate surface of the vibrating trough 22 in real time. If a part of the raisins that contact the bottom plate surface of the vibrating trough 22 deteriorate due to the high heat during the process of being vibrated and conveyed by the vibrating trough 22 to the discharge end of the vibrating trough 22, the high heat will damage the raisin body, causing the raisins to be over-caramelized or burned, resulting in the raisins becoming relatively sticky and sticking together in a group, so that the raisins overheated by the electromagnetic eddy current lose their original edible quality, processing significance and selling value and can only be discarded. Therefore, the permanent magnet core must be directly or indirectly fixedly installed on the vibrating trough 22, and the rigid tubular body on which the electromagnetic coil is fixedly wound is directly or indirectly fixed on the support frame 31, or the pallet 02, or the machine frame 1. As long as the rigid tubular body is directly or indirectly fixed on the support frame 31, or the pallet 02, or the machine frame 1, the position of the electromagnetic coil is generally relatively far from the vibrating trough 22, and the main body of the alternating magnetic field generated by the alternating current loaded in the electromagnetic coil cannot significantly act on the vibrating trough 22. The eddy current heating effect in the bottom plate of the vibrating trough 22 is very small and can be ignored. The vibrating trough 22 will not be significantly heated and its temperature will not rise, so as to prevent the alternating magnetic field generated by the alternating current loaded in the electromagnetic coil from generating an electromagnetic eddy current that overheats the vibrating trough 22 in the vibrating trough 22, and ensure that the raisins vibrated and conveyed by the vibrating trough 22 will not be heated by the heat-releasing moving trough 21 and lose their due selling quality.;

[0027] The electromagnetic vibrating feeding mechanism 2 is powered and controlled by an existing electromagnetic controller, which is produced and marketed by Haian Yongheng Vibration Machinery Co., Ltd. and has a model or specification of KC. When the electromagnetic controller loads municipal alternating current (220V, 50Hz) to the electromagnetic coil, the municipal alternating current passes through the electromagnetic coil in a periodic commutation manner, thereby generating an alternating magnetic field with a frequency of 50Hz and an electromagnetic force of interaction between the permanent magnet core and the electromagnetic coil. The alternating magnetic field causes the permanent magnet core to be subjected to periodic attraction or repulsion forces and maintain periodic vibration, thereby driving the vibration trough 22 to vibrate at a frequency of 50Hz, thereby achieving the purpose of conveying dried fruits (raisins) in the vibration trough 22 (because the electromagnetic coil that interacts with the permanent magnet core through the alternating electromagnetic vibration force is finally rigidly fixed on the frame 1 through a rigid tubular body, and the permanent magnet core is supported by a support plate and a support plate 02 with good elastic supporting performance It is indirectly fixed on the frame 1, so the electromagnetic coil vibrates less, the permanent magnet core and the vibration groove 22 vibrate more and vibrate synchronously, and by operating the electromagnetic controller), the current on the electromagnetic coil can be adjusted to adjust the electromagnetic field strength / electromagnetic force to achieve the adjustment of the vibration amplitude of the permanent magnet core. The adjustment of the vibration amplitude of the permanent magnet core correspondingly realizes the adjustment of the vibration amplitude of the vibration groove 22, and then the feed / discharge per unit time of the present invention can be adjusted in real time; of course, the existing commercially available frequency converter (based on the thyristor frequency conversion principle that can adjust the frequency of alternating current) can also replace the above-mentioned electromagnetic controller. When the vibration amplitude of the permanent magnet core remains unchanged, by operating the frequency converter, the alternating frequency of the current on the electromagnetic coil is adjusted, and then the vibration frequency of the permanent magnet core is adjusted through the electromagnetic force, and then the feed / discharge per unit time of the present invention can also be adjusted in real time.

[0028] The electromagnetic vibration unit 21 is arranged on one side of the vibration trough 22 to drive the vibration trough 22 to periodically throw the dried fruits (raisins) forward. Preferably, a material guide trough 9 is provided at the discharge end of the vibration trough 22. The material guide trough 9 is tilted and fixed to one side of the frame 1 through a support rod 91. The dried fruits from the vibration trough 22 can be transported to the rough processing unit through the material guide trough 9; the bottom of the vibration trough 22 is fixed on the frame 1 through a vibration bracket 4 and a support plate 02. The support plate 02 is arranged between the vibration bracket 4 and the frame 1. The vibration bracket 4 includes a plurality of groups of support plates arranged axially along the vibration trough 22 and in an inclined shape. Preferably, but not limited to, the support plate is a glass fiber board. The support plate made of glass fiber material has appropriate support rigidity and elasticity. The tilt direction of the support plate is opposite to the throwing direction of the dried fruits, such as Figure 1As shown, the support plate is inclined backward from the lower end of the storage hopper 3. The inclined and fixed setting of the support plate can convert the reciprocating electromagnetic vibration force generated by the horizontal electromagnetic interaction between the electromagnetic coil and the permanent magnet core into a reciprocating vibration force along an inclined plane relative to the horizontal plane. This reciprocating vibration force along the inclined plane correspondingly causes the vibrating trough 22 to vibrate reciprocally along the inclined plane. Under the action of this reciprocating vibration force along the inclined plane, the raisins on the bottom surface of the vibrating trough 22, which fall from the discharge opening at the lowest end of the storage hopper 3 into the vibrating trough 22, can be thrown forward towards the front of the discharge opening / the discharge end of the vibrating trough 22. The raisin particles on the bottom surface of the vibrating trough 22 move forward in a continuously jumping state towards the front of the discharge opening / the discharge end of the vibrating trough 22; The support plate made of fiberglass material and with a set / tilted direction is fixedly installed on the support plate 02. In addition to being able to support the electromagnetic vibrating feeding mechanism 2, it also plays a certain damping (buffering, vibration reduction) role, ensuring the normal vibration of the vibrating trough 22 while reducing the transmission of vibration to the frame 1 and other components or devices constituting the present invention (dried fruit quantitative conveying device), and attenuating the vibration amplitude and vibration frequency of the frame 1 driven by the vibrating trough 22 to the lowest level, effectively preventing the ordinary threaded fasteners installed on the dried fruit quantitative conveying device from gradually loosening or falling off within a short period of time (preventing the present invention (dried fruit quantitative conveying device) from falling apart). Therefore, to prevent production accidents caused by the loosening or falling off of the components constituting the present invention, the threaded fasteners installed on the present invention need to be tightened manually regularly to ensure that the present invention is firmly fastened together and will not eventually fall apart due to the overall vibration effect.

[0029] The storage hopper 3 is installed above the vibrating trough 22 through the bracket 12. The storage hopper 3 can store a certain amount of dried fruits (raisins) and supply them to the vibrating trough 22. The storage hopper 3 is preferably but not limited to a conical structure, and a discharge opening is provided at the conical top (the lowest end of the storage hopper 3). The discharge opening of the storage hopper 3 is placed inside the vibrating trough 22 and does not contact the vibrating trough 22, ensuring that the vibration force of the vibrating trough 22 will not be directly transmitted to the storage hopper 3 in large quantities. The distance between the discharge opening and the bottom surface of the vibrating trough 22 must be sufficient, generally selected as 1 - 5 cm, so that the dried fruits can pass through; It has been proven by practice that when the vibrating trough 22 is vibrating, the dried fruits falling from the discharge opening are likely to accumulate and stay at the two side edges of the inner bottom surface of the vibrating trough 22. Therefore, to avoid the accumulation and retention of dried fruits at the two side edge parts of the inner bottom surface of the vibrating trough 22 during the vibration process, it is preferred to be provided with blocking blocks 01 or blocking curtains in the gaps on both sides between the vibrating trough 22 and the discharge opening of the storage hopper 3, such as Figure 2As shown, the blocking block 01 is used to limit and guide the dried fruits (raisins) from the feeding port to move forward along the throwing direction towards the front of the feeding port, and prevent some dried fruit particles that fall on the dried fruit pile that has previously contacted the inner bottom surface of the vibrating trough 22 from rolling down onto the two side edge parts of the inner bottom surface of the vibrating trough 22 on the previously piled dried fruit pile, so as to prevent the dried fruit particles that roll onto the two side edge parts of the inner bottom surface of the vibrating trough 22 from accumulating and staying in the gaps on both sides between the vibrating trough 22 and the feeding port of the storage hopper 3. The blocking block 01 or the blocking curtain can be made of fiberglass material, latex material, PVC (polyvinyl chloride) material, PU (polyurethane) material, etc., as long as it can be fixed in the gaps on both sides between the vibrating trough 22 and the feeding port of the storage hopper 3 to achieve gap blocking.

[0030] The material level detection unit is connected to the control unit through a wired connection. The control unit is a commercially available microcontroller / micro control unit / microcontroller (MCU) or programmable logic controller (PLC). The material level detection unit includes a photoelectric sensor 51 and / or a gravity sensor 52. In this embodiment, it is preferred that the photoelectric sensor 51 and the gravity sensor 52 can be selectively used according to needs. When the material level detection unit is the photoelectric sensor 51, the photoelectric sensor 51 includes at least two groups, which are respectively arranged on the side wall of the storage hopper 3 to detect the high and low material levels in the storage hopper 3 respectively. When the material level is higher than the preset upper limit, the photoelectric sensor 51 arranged at the high position is triggered. When the material level is lower than the preset lower limit, the photoelectric sensor 51 arranged at the low position is triggered. In this embodiment, the photoelectric sensor 51 is preferably but not limited to an infrared sensor or a laser sensor; the photoelectric sensor 51 actually specifically refers to a commercially available diffuse reflection photoelectric switch sensor, produced and sold by Hugong Group Co., Ltd., and its model is E3F-DS30Y1 (output form: AC two-wire normally open); when the material level detection unit is the gravity sensor 52, the gravity sensor 52 includes several groups, which are respectively arranged at each load-bearing point at the bottom of the frame 1. Generally, it is preferably arranged at the four feet at the bottom of the frame 1 (a total of four gravity sensors) to detect the accumulated weight of the dried fruits (raisins) in the storage hopper 3. According to the accumulated weight of the dried fruits, the height and accumulated amount of the dried fruits in the storage hopper 3 are indirectly reflected. Each piezoresistive sensor senses the weight borne by each foot. The microcontroller (MCU) or programmable logic controller (PLC) receives and collects the weight numerical signals sensed by each gravity sensor and sums up the weight numerical values sensed by all the gravity sensors 52 (since the weight numerical value of the present invention (dried fruit quantitative conveying device) is constant and can be measured in advance by the gravity sensor 52, so the total weight numerical value measured by the four piezoresistive sensors - the total weight numerical value of the present invention (dried fruit quantitative conveying device, excluding the gravity sensor 52) = the total accumulated weight of the dried fruits in the storage hopper 3 and the vibrating trough 22) to obtain the total accumulated weight of the dried fruits currently located in the storage hopper 3 and the vibrating trough 22 at the same time or the accumulated volume or accumulated material level of the dried fruits in the vibrating trough 22 and the storage hopper 3 corresponding to the current total accumulated weight of the dried fruits; each piezoresistive sensor (weighing sensor) is produced and sold by Anhui Keliy Electrical Manufacturing Co., Ltd., and its model is SQB type, with a measuring range of 150KG and an accuracy class of C3;In this embodiment, the preferred material level detection unit is the gravity sensor 52. In this embodiment, the gravity sensor 52 is preferably but not limited to a weighing sensor commercially available from Anhui Kelai Electric Manufacturing Co., Ltd. Of course, in other embodiments of the present invention, the material level detection unit can also be a combination of the gravity sensor 52 and the photoelectric sensor 51. These two sensors are respectively arranged at corresponding positions, and the microcontroller (MCU) or programmable logic controller (PLC) can detect and compare the respective detection values according to the collected signals. Since the measurement accuracy of the gravity sensor 52 is higher than that of the photoelectric sensor 51, the error of the raisin stacking weight value collected by the photoelectric sensor 51 or the equivalent error of the raisin stacking volume / material level should be calibrated according to the gravity value measured by the gravity sensor 52 to reduce its measurement error, so as to further improve the measurement accuracy of the photoelectric sensor 51 for the raisin stacking volume / material level. However, the method of using the combination of the gravity sensor 52 and the photoelectric sensor 51 to ensure the accuracy of the collected total weight of the dried fruit stack will slightly increase the production and processing cost of the present invention.;

[0031] The rack 1 includes a base 11 and a bracket 12. The bracket 12 is located above the base 11. The gravity sensor 52 is arranged between the base 11 and the bracket 12 to collect the gravity of itself it bears, that is, the gravity sensor 52 can collect the weight of the entire rack 1 and other components it bears (the remaining components constituting the dried fruit quantitative conveying device, including the storage hopper 3, the vibrating trough 22, etc.). By subtracting the weight of the present invention (the dried fruit quantitative conveying device, excluding the gravity sensor 52) itself, the total weight of the dried fruit jointly borne by the storage hopper 3 and the vibrating trough 22 (which can be converted into the dried fruit stacking volume) can be obtained.

[0032] The control unit includes an existing microcontroller / micro control unit / microcontroller (MCU) and a relay switch. The microcontroller (MCU) can also be replaced by a programmable logic controller (PLC). It can control the start and stop of the feeding mechanism 6 for conveying dried fruit into the storage hopper 3 according to the dried fruit stacking amount signal obtained by the material level detection unit, such as Figure 3As shown, in this embodiment, the dry fruit quantitative conveying device is arranged between the dry fruit rough processing unit and the feeding mechanism 6, wherein the feeding mechanism 6 includes an elevator and a vibrating screen 8 (vibrating screening conveyor), and the single chip microcomputer (MCU) can control the start and stop of the driving motor that drives the elevator to operate or drives the vibrating screen 8 to vibrate according to the dry fruit accumulation amount signal collected by the material level detection unit. The driving motor that drives the elevator to operate specifically refers to the power motor that the elevator has and can drive it to operate, and the driving motor that drives the vibrating screen 8 to vibrate specifically refers to the eccentric vibration motor / vibrator that is fixed to the vibrating screen 8 body. In this embodiment, the driving motor that drives the vibrating screen 8 to vibrate preferably controls the start and stop of the driving motor that drives the vibrating screen 8 to vibrate. The driving motor starts and stops, and the elevator can also remain in the running state without being controlled by the single-chip microcomputer (MCU). In this way, it can at least be ensured that after the vibration screen 8 is stopped in time, the elevator can no longer continue to transport dried fruits to the storage hopper 3 regardless of whether it is running or not. If the power motor used by the elevator cannot be started and stopped frequently or cannot be stopped immediately when running, then the elevator can be kept running continuously. Even if the power motor can be stopped frequently, frequent short-term shutdowns cannot save considerable electrical energy, so as to avoid damage to the power motor due to frequent starts and stops or sudden power failures. Keeping the power motor powered on will not significantly increase the electricity cost.

[0033] The control unit only needs to include a commercially available controller and several relay switches. Among them, the controller can be a microcontroller / microcontroller unit / single-chip microcomputer (MCU). The relay switch is specifically a commercially available solid-state relay. The load ends of the solid-state relays are respectively connected to the power supply circuit of the drive motor and the power supply circuit of the electromagnetic coil. The single-chip microcomputer (MCU) receives the material level signal collected by the material level detection unit, and after logical operation based on the corresponding material level signal, sends the trigger signal for controlling the action of the relay switch to the control end of the corresponding relay switch. After the control ends of the corresponding relay switches receive the trigger signals respectively, they act and control the on / off of the corresponding power supply circuit through their load ends, thereby controlling whether the drive motor operates or whether the electromagnetic coil is energized with alternating current. When the present invention at least uses the photoelectric sensor 51 to sense and measure the accumulated amount / level of raisins contained in the storage hopper 3, if the photoelectric sensors 51 for high and low levels use the above-mentioned diffuse reflection photoelectric switch sensor of model E3F-DS30Y1 (output form: AC two-wire normally open), this diffuse reflection photoelectric switch sensor itself has a built-in relay switch. Therefore, the relay switch built in the diffuse reflection photoelectric switch sensor is directly connected in parallel to the power supply circuit to control the drive motor, which can completely replace the two solid-state relays for controlling the drive motor through the power supply circuit, and there is no need for the control unit to additionally control the start and stop of the drive motor. At this time, the control unit only needs to control one solid-state relay to control whether the electromagnetic coil is energized with alternating current through the power supply circuit. When the present invention only uses the load cell to sense and measure the accumulated weight of raisins contained in the storage hopper 3, it is necessary to control whether the drive motor and the electromagnetic coil are powered on through the control unit (including a controller (single-chip microcomputer (MCU) / or programmable logic controller (PLC)), three solid-state relays). The single-chip microcomputer (MCU) / or programmable logic controller (PLC) controls the first two solid-state relays to control whether the drive motor is powered on through the power supply circuit in a parallel manner, and controls the latter solid-state relay to control whether the electromagnetic coil is powered on through the power supply circuit. This embodiment specifically illustrates the working principle of the present invention when the material level detection unit is the gravity sensor 52: In this embodiment, the metering device is installed between the raisin rough processing unit and the feeding mechanism 6.

[0034] During operation, start the raisin rough processing unit, the feeding mechanism 6 and the level controller. Feed the dried fruits into the storage hopper 3 through the vibrating screen 8 and the elevator at the maximum unit time conveying capacity of the elevator. Sense the accumulated amount of dried fruits in the storage hopper 3 through the gravity sensor 52 in the level controller. When the accumulated amount of dried fruits reaches the preset upper limit, control the driving motor that drives the vibrating screen 8 to vibrate to stop working through the control unit and control the electromagnetic coil to be energized with alternating current. At this time, since the vibrating screen 8 stops working, no subsequent dried fruits will be conveyed to the elevator, and thus no more dried fruits will be conveyed into the storage hopper 3. At this time, the accumulated amount of dried fruits in the storage hopper 3 will no longer increase. As the rough processing unit operates, the accumulated amount of dried fruits in the storage hopper 3 will gradually decrease and reach the preset lower limit after a set period of time. This set period of time is the time when the maximum rated accumulated amount of raisins temporarily stored in the storage hopper 3 is completely vibrated and conveyed into the rough processing unit. This set period of time should be less than or equal to the time when the raisin rough processing unit can process the maximum rated accumulated amount of raisins temporarily stored in the storage hopper. When the accumulated amount of dried fruits reaches the preset lower limit, the control unit controls the motor that drives the vibrating screen 8 to vibrate to start and controls the electromagnetic coil to stop being energized (no current is applied). Then, the dried fruits enter the elevator through the vibrating screen 8 and are conveyed into the storage hopper 3 until the accumulated amount of dried fruits in the storage hopper 3 reaches the upper limit again, and this process repeats in a cycle.

[0035] In summary, in this embodiment, the level detection unit on the device can detect the accumulated amount of dried fruits in the storage hopper 3 in real time. The control unit controls the start and stop of the feeding mechanism 6 (vibrating screen 8 and elevator) that conveys dried fruits into the storage hopper 3 according to the currently collected accumulated amount of dried fruits in the storage hopper 3, thereby indirectly controlling the accumulated amount of dried fruits entering the raisin rough processing unit to ensure that the accumulated amount of dried fruits entering the raisin rough processing unit meets the actual requirements and avoid the problem of poor impurity removal effect of the raisin rough processing unit caused by adding excessive dried fruits. The electromagnetic vibration feeding mechanism uses the principle of electromagnetic vibration to convey dried fruits to the raisin rough processing unit. Compared with the existing mechanical conveying mechanism, it can not only convey dried fruits in an intermittent and equal amount manner, but also is easy to control. By adjusting the current magnitude, the amplitude of the vibrating trough 22 can be adjusted to achieve precise control of the feeding amount, adapting to the output requirements of different raisin rough processing. In addition, this dried fruit quantitative conveying device has the technical advantage of limiting and adjusting the unit time output / supply amount of dried fruits (raisins), which can fully meet the needs of the existing market.

[0036] In this embodiment, the dried fruits are preferably raisins. Of course, they can also be dried goji berries, dried apricots, dried blueberries, other dried fruits, etc.

[0037] In this embodiment, in addition to being able to be used in the rough processing process of dried fruits, when necessary, this metering device can also be applied to the metering and conveying processes of other materials such as grains according to needs.

[0038] In the description of the present invention, it should be understood that the terms "upper end", "bottom", "upper", "lower", "outer side", "inner side", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or mechanism referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on the present invention; at the same time, in the description of the present invention, the meaning of "at least" includes one, two, and more than two.

[0039] In the present invention, unless otherwise clearly defined and limited, the terms "fixed", "connected", "installed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a relatively rotatable connection; or it can be an integral connection, a direct connection, or an indirect connection through an intermediate medium; for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solutions is not described in detail here. It should be noted that for those skilled in the art, several improvements can be made without departing from the present invention, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by the present invention should be based on the content of the claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A dry fruit quantitative conveying device, characterized in that: It includes a frame and a level controller. An electromagnetic vibration feeding mechanism and a storage hopper are provided on the frame. The storage hopper is mounted above the electromagnetic vibration feeding mechanism to supply dried fruits to the electromagnetic vibration feeding mechanism. The level controller includes a control unit and a level detection unit. The level detection unit is arranged on the storage hopper and / or the frame and is used to detect the accumulated amount of dried fruits in the storage hopper. The control unit can control the start and stop of the feeding mechanism for conveying dried fruits into the storage hopper according to the dried fruit accumulated amount signal obtained by the level detection unit.

2. The dried fruit quantitative conveying device according to claim 1, wherein: The level detection unit includes a photoelectric sensor and / or a gravity sensor. When it is a photoelectric sensor, the photoelectric sensor includes at least two groups, which are respectively arranged on the inner side walls of the storage hopper to detect the high and low levels in the storage hopper respectively. When it is a gravity sensor, the gravity sensor includes multiple groups, which are respectively arranged at each load-bearing point at the bottom of the frame.

3. The dry fruit quantitative conveying device according to claim 2, characterized in that: The frame includes a base and a support. The support is located above the base. The gravity sensor is arranged between the base and the support to collect the gravity from the support.

4. The dried fruit quantitative conveying device according to claim 1, characterized in that: The electromagnetic vibration feeding mechanism includes an electromagnetic vibration unit and a vibration trough. The electromagnetic vibration unit is arranged on one side of the vibration trough to drive the vibration trough to periodically throw dried fruits forward. The bottom of the vibration trough is fixedly arranged on the frame through a vibration support.

5. The dried fruit quantitative conveying device according to claim 2, characterized in that: The vibration support includes multiple groups of support plates arranged along the axial direction of the vibration trough and inclined. The inclined direction of the support plate is opposite to the throwing direction of the dried fruits.

6. The dry fruit quantitative conveying device according to claim 3, wherein: The support plate is a fiberglass board.

7. The dry fruit quantitative conveying device according to claim 4, characterized in that: A guide trough is provided at the discharge end of the vibration trough. The guide trough is fixed to one side of the frame through a support rod.

8. The dried fruit quantitative conveying device according to claim 4, wherein: The storage hopper is mounted directly above the vibration trough through a support frame. Among them, the distance between the discharging opening of the storage hopper and the bottom of the vibration trough is 1 - 2 cm.

9. The dry fruit quantitative conveying device according to claim 8, wherein: Blocking blocks are arranged in the gaps on both sides of the discharging opening of the vibration trough and the storage hopper. The blocking blocks are used to guide the dried fruits from the discharging opening to move along the throwing direction.

10. The dry fruit quantitative conveying device according to claim 1, wherein: The feeding mechanism for conveying dried fruits into the storage hopper includes a hoist and a vibrating screen. The control unit is connected to the drive motor of the vibrating screen to control the start and stop of the drive motor according to the dried fruit accumulated amount signal obtained by the level detection unit.

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