CN112224805A - A accurate flow control unit for tealeaves production line - Google Patents
A accurate flow control unit for tealeaves production line Download PDFInfo
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- CN112224805A CN112224805A CN202011056148.9A CN202011056148A CN112224805A CN 112224805 A CN112224805 A CN 112224805A CN 202011056148 A CN202011056148 A CN 202011056148A CN 112224805 A CN112224805 A CN 112224805A
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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
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
- B65G47/18—Arrangements or applications of hoppers or chutes
- B65G47/19—Arrangements or applications of hoppers or chutes having means for controlling material flow, e.g. to prevent overloading
Abstract
An accurate flow control unit for a tea production line comprises a feed hopper, a power mechanism, an elastic push rod mechanism, a conveying belt and an adjusting mechanism; the feed hopper is provided with a discharge port, and the conveying belt is arranged on the lower side of the discharge port; the adjusting end of the end part of the elastic push rod mechanism is inserted into the discharge hole, the push rod of the elastic push rod mechanism reciprocates under the action of self elasticity and a power mechanism, and the adjusting end reciprocates along with the push rod to adjust the opening of the discharge hole; the adjusting mechanism is used for adjusting the thrust of the power mechanism to the elastic push rod mechanism according to the bearing of the conveying belt so as to change the expansion range of the adjusting end in the discharging hole. In the invention, the bearing of the conveying belt changes along with the blanking speed of the discharge port. Through adjustment mechanism and power unit, realized the aperture of discharge gate is along with the change of the bearing of conveyer belt and synchronous adjustment, is favorable to realizing the stability of the bearing of conveyer belt to guarantee the steady unloading of discharge gate.
Description
Technical Field
The invention relates to the field of tea processing equipment, in particular to an accurate flow control unit for a tea production line.
Background
The tea processing quality is directly influenced by the feeding uniformity and feeding accuracy of key equipment in a tea production line, the feeding on a conveying belt is not uniform due to the fact that a flow control unit is not designed in the existing tea production line, for example, a waiting state that too many incoming materials are accumulated or no materials are temporarily generated in related equipment due to uncertain feeding in the processes of enzyme deactivation, shaping and baking is often generated, and when the number of the incoming materials is increased suddenly, the defects of insufficient enzyme deactivation, uneven shaping, insufficient baking and the like are caused; when the incoming material is suddenly reduced, the coke, broken tea, scorch and the like are caused. The above processes are all caused by that the feeding is controlled only by the belt speed of the conveyer belt in the current production line, and the discharging is caused by non-uniform discharging in the production link, that is, the current tea production line is not equipped with an accurate flow control unit and is caused only by the feeding of the conveyer (vertical or horizontal conveying). Therefore, an automatic flow control unit is arranged between a discharge port of a conveyor (vertical or horizontal conveying) and key equipment to realize uniform flow control of the whole production line so as to adapt to the tea making requirements of different tea types and improve the quality of finished tea of machine-made tea.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an accurate flow control unit for a tea production line.
The invention adopts the following technical scheme:
an accurate flow control unit for a tea production line comprises a feed hopper, a power mechanism, an elastic push rod mechanism, a conveying belt and an adjusting mechanism;
the feed hopper is provided with a discharge port, and the conveying belt is arranged on the lower side of the discharge port;
the adjusting end of the end part of the elastic push rod mechanism is inserted into the discharge hole, the push rod of the elastic push rod mechanism reciprocates under the action of self elasticity and a power mechanism, and the adjusting end reciprocates along with the push rod to adjust the opening of the discharge hole;
the adjusting mechanism is used for adjusting the thrust of the power mechanism to the elastic push rod mechanism according to the bearing of the conveying belt so as to change the expansion range of the adjusting end in the discharging hole.
Preferably, the adjusting mechanism comprises a lever, a weight unit and a linkage unit;
the lever is hinged with the feed hopper, the end parts of the lever, which are positioned at the two sides of the feed hopper, are respectively a first end and a second end, the weight unit is arranged at the first end of the lever, and the conveying belt is hinged with the second end of the lever; the lever rotates along with the moment difference between the weight unit and the conveyer belt;
the linkage unit and the weight unit are arranged on the same side of the lever, and the linkage unit adjusts the thrust of the power mechanism to the elastic push rod mechanism according to the rotation of the lever.
Preferably, the linkage unit comprises a hanging rod and an adjusting block which are connected with each other, the adjusting block is hinged with the lever through the hanging rod, the adjusting block is inserted between the power mechanism and the elastic push rod mechanism, and the shape structure of the adjusting block enables the thrust applied to the elastic push rod mechanism by the power mechanism through the adjusting block to be changed when the position of the adjusting block between the power mechanism and the elastic push rod mechanism is changed.
Preferably, the power mechanism comprises: a drive motor and a slide bar; the sliding rod is connected with the feed hopper in a sliding manner, and the driving motor is used for driving the sliding rod to slide;
the spring lever mechanism includes: the spring rod mechanism comprises a pressure spring support, a pressure spring and a valve slide block serving as an adjusting end of the spring rod mechanism; the valve sliding block is connected with the feed hopper in a sliding manner; the compression spring is sleeved on the compression spring support, a first end of the compression spring is used as a free end, and a second end of the compression spring is fixedly connected with the feed hopper; the first end of the pressure spring support is fixedly connected with the first end of the pressure spring, and the second end of the pressure spring support is connected with the valve slide block;
the sliding direction of the sliding rod, the telescopic direction of the pressure spring and the sliding direction of the valve sliding block are all positioned on the same straight line;
the adjusting block is a wedge-shaped block; the adjusting block is positioned between the slide rod and the pressure spring; the lever drives the adjusting block to move up and down in the rotating process, and the vibration amplitude of the pressure spring changes along with the change of the up-down position of the adjusting block in the sliding process of the sliding rod.
Preferably, the power mechanism further comprises: the first conjunction piece is connected with one end of the sliding rod facing the adjusting block; the spring rod mechanism also comprises a second conjunction piece arranged at the first end of the pressure spring; the end face of the first conjunction piece connected with the sliding rod is perpendicular to the sliding direction of the sliding rod, and the end face of the first conjunction piece facing the adjusting block is parallel to the end face of the adjusting block facing the first conjunction piece; the end face of the second conjunction piece connected with the pressure spring is perpendicular to the telescopic direction of the pressure spring, and the end face of the second conjunction piece facing the regulating block is parallel to the end face of the regulating block facing the second conjunction piece.
Preferably, the weight unit includes: weights and weight support rods; the weight passes through the weight bracing piece and is connected with the first end of lever, and the weight removes along lever moment direction at the weight bracing piece.
Preferably, the weight unit further includes: the weight support, the positioning polished rod and the weight motor; the weight support is arranged on the lever, the weight support rod is rotatably arranged on the weight support by adopting a threaded lead screw, the weight is in threaded connection with the weight support rod, and the positioning polished rod penetrates through the weight and is arranged on the weight support in parallel with the weight support rod; the weight motor is installed on the weight support and is used for driving the weight bracing piece to rotate.
Preferably, the device also comprises a controller, and a tension sensor for detecting the stress condition is further arranged at the second end of the lever; the controller is connected with the tension sensor and the weight motor respectively, and the controller is used for controlling the weight motor to adjust the weight position according to the detection value of the tension sensor.
Preferably, the bottom of the feed hopper is provided with a discharge inclined plate, and a gap between the discharge inclined plate and the valve forms the discharge hole; the feeding hopper is positioned on two sides of the discharging inclined plate and is respectively provided with an arc-shaped groove plate on two side plates which are vertical to the discharging inclined plate, the arc-shaped groove plates are provided with arc-shaped groove holes and positioning holes, and the arc-shaped groove holes are positioned on a circle which takes the positioning holes as a circle; one end of the discharge sloping plate is provided with a sloping plate rotating shaft and a sloping plate adjusting shaft which are parallel to the connecting direction of the two arc-shaped groove plates; two ends of the inclined plate adjusting shaft are matched with the arc-shaped slotted holes, and two ends of the inclined plate rotating shaft are matched with the positioning holes; the discharging inclined plate is arranged on the feed hopper through the cooperation of the inclined plate rotating shaft, the inclined plate adjusting shaft and the shaft holes of the two arc-shaped groove plates.
Preferably, the feed hopper is also provided with a second sliding chute, and the valve sliding block is slidably arranged in the second sliding chute; and one side of the valve sliding block facing the discharging inclined plate forms an inclined plane which is matched with the discharging inclined plate to form an inverted V-shaped structure.
The invention has the advantages that:
(1) according to the tea leaf feeding device, the conveying belt bears tea leaf materials output by the feeding hopper through the discharge hole, and the bearing capacity of the conveying belt changes along with the blanking speed of the discharge hole. Through adjustment mechanism and power unit, realized the aperture of discharge gate is along with the change of the bearing of conveyer belt and synchronous adjustment, is favorable to realizing the stability of the bearing of conveyer belt to guarantee the steady unloading of discharge gate.
(2) According to the invention, the elastic push rod mechanism drives the adjusting end to move so as to adjust the opening degree of the discharge port, so that the opening degree of the discharge port is periodically adjusted along with the elastic vibration of the elastic push rod mechanism, and the opening degree of the discharge port is small and large in one vibration period of the elastic push rod mechanism, thereby being beneficial to avoiding the blockage of the discharge port.
(3) The invention designs the weight motor, the threaded screw rod and other components to automatically control the position of the weight, and combines the installation of the tension sensor and the controller, so that the actual flow of the conveying belt can be accurately detected, the automatic control of the flow is realized, the control of single flow can be completed, and the variable flow control can be realized according to the requirements of the tea making process.
(4) The inclination angle of the discharging inclined plate is adjustable so as to adapt to tea with different flowing properties.
(5) The material level sensor above the hopper can ensure the stable material level of tea materials in the hopper and the stable feeding of the conveyer belt by the hopper.
(6) The invention is provided with the vibrating motor, so that even the relatively sticky tea products (such as enzyme-deactivating leaves, twisting leaves and the like) can smoothly flow out of the valve without blockage.
Drawings
FIG. 1 is an isometric view of a precision flow control unit for a tea production line according to the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a schematic view of a partial connection between the lever and the weight unit in FIG. 1;
FIG. 4 is a structural diagram of a weight unit in FIG. 1;
FIG. 5 is a schematic view of the feed hopper of FIG. 1;
fig. 6 is a structural view of a shutter slider and a vibration unit in fig. 1.
FIG. 7 is a view showing the connection structure of the shutter and the supporting post of the compression spring in FIG. 1;
fig. 8 is a schematic view of the installation of the discharge sloping plate in fig. 1.
Fig. 9 is a view showing the discharge chute plate of fig. 8.
The figure is as follows: the device comprises a feed hopper 1, a lever bracket 11, a discharge inclined plate 12, an inclined plate rotating shaft 121, an arc-shaped slotted hole 141, an inclined plate adjusting shaft 122, a second chute 13, an arc-shaped chute plate 14, a lever 2, a weight bracket 21, a weight 22, a weight support rod 23, a weight motor 24, a positioning polished rod 25, a suspender 26, an adjusting block 27, a conveying belt 30, a first lifting lug 31, a second lifting lug 32, a first tension sensor 33, a second tension sensor 34, a first inverted T-shaped web 35, a second inverted T-shaped web 36 and a driving belt pulley 37; a driven pulley 38; the device comprises a servo motor 39, a motor bracket 4, a first sliding chute 40, a valve sliding block 41, a first conjunction member 42, a pressure spring support 43, a pressure spring 44, a sliding rod 45, a crank 46, a connecting rod 47, a driving motor 48, a second conjunction member 49, a vibrating motor 5 and a material level sensor 6.
Detailed Description
Referring to fig. 1 and 2, the present embodiment provides an accurate flow control unit for a tea production line, including: feed hopper (1), power unit, elasticity push rod mechanism, conveyer belt (30) and adjustment mechanism.
A discharge port is arranged on the feed hopper 1, and the conveying belt 30 is arranged below the discharge port. The conveyor belt 30 is used to convey the tea material to a designated position.
The adjusting end of the end part of the elastic push rod mechanism is inserted into the discharge hole, the push rod of the elastic push rod mechanism reciprocates under the action of self elasticity and the power mechanism, and the adjusting end reciprocates along with the push rod to adjust the opening degree of the discharge hole.
The adjusting mechanism is used for adjusting the thrust of the power mechanism to the elastic push rod mechanism according to the bearing of the conveying belt (30) so as to change the expansion range of the adjusting end in the discharging hole.
In the embodiment, the conveying belt (30) bears the tea materials output by the feed hopper (1) through the discharge port, and the bearing of the conveying belt (30) changes along with the blanking speed of the discharge port. Through the adjusting mechanism and the power mechanism, the opening degree of the discharge port is synchronously adjusted along with the change of the bearing of the conveying belt (30), the stability of the bearing of the conveying belt (30) is favorably realized, and the stable discharging of the discharge port is ensured.
Drive through elasticity push rod mechanism in this embodiment adjust the end motion, in order to adjust the aperture of discharge gate has realized the aperture of discharge gate is along with elasticity push rod mechanism's elastic vibration and periodic adjustment make the aperture of discharge gate is big-hour when in a vibration cycle of elasticity push rod mechanism, thereby is favorable to avoiding the discharge gate blocks up.
Referring to fig. 1 to 4, the adjusting mechanism includes a lever (2), a weight unit, and a linkage unit. The lever (2) is hinged to the feed hopper (1), and the end parts of the lever (2) located on two sides of the feed hopper (1) are respectively a first end and a second end. The weight unit is arranged at the first end of the lever 2, and the conveyer belt 30 is hinged at the second end of the lever 2; the lever 2 rotates with the difference in moment between the weight unit and the conveyor belt 30. Namely, the weight unit, the lever 2 and the conveyer belt 30 cooperate to form a seesaw structure.
Referring to fig. 5, in the present embodiment, a lever bracket 11 is disposed on the feeding hopper 1, the lever 2 is in a fork structure, a forked end of the lever is sleeved outside the feeding inlet and is pin-connected with the lever bracket 11 to provide a rotation fulcrum for the lever 2, and a handle end of the lever is connected with a weight unit. The conveyer belt 30 is installed between a first inverted T-shaped web 35 and a second inverted T-shaped web 36 which are oppositely arranged, and the top ends of the first inverted T-shaped web 35 and the second inverted T-shaped web 36 are respectively connected with two ends of the forked end of the lever 2, namely the second end of the lever 2. The provision of the first inverted T web 35 and the second inverted T web 36 is beneficial to preventing the tea material from falling off the two sides of the conveyor belt 30.
In this embodiment, a driving pulley 37 and a driven pulley 38 for driving the conveyor belt 30 to rotate are installed in parallel between the first inverted T-shaped web 35 and the second inverted T-shaped web 36, and a servo motor 39 for driving the driving pulley 37 to rotate is installed on the first inverted T-shaped web 35 or the second inverted T-shaped web 36.
In the embodiment, the linkage unit and the weight unit are arranged on the same side of the lever (2), and the linkage unit adjusts the thrust of the power mechanism to the elastic push rod mechanism according to the rotation of the lever (2).
Specifically, the linkage unit comprises a suspension rod (26) and an adjusting block (27) which are connected with each other, and the adjusting block (27) is hinged with the lever (2) through the suspension rod (26). During specific implementation, one end of a suspender (26) can be fixedly connected with the lever (2), and the other end of the suspender is hinged with the adjusting block (27); or one end of the suspender (26) is hinged with the lever (2), and the other end is fixedly connected with the adjusting block (27). Therefore, the axis of the adjusting block (27) is always positioned in the vertical direction in the rotating process of the lever (2).
The adjusting block (27) is inserted between the power mechanism and the elastic push rod mechanism, and the shape structure of the adjusting block (27) enables the thrust applied to the elastic push rod mechanism by the power mechanism through the adjusting block (27) to be changed when the position of the adjusting block (27) between the power mechanism and the elastic push rod mechanism is changed, so that the deformation stroke of the elastic push rod mechanism is adjusted, and the opening degree of the discharge port is further adjusted.
In this embodiment, the power mechanism includes: a drive motor (48) and a slide bar (45); the spring lever mechanism includes: a compression spring support (43), a compression spring (44) and a shutter slider (41) as an adjusting end of the spring lever mechanism.
The shutter slider 41 is slidably installed on the hopper 1, and the opening degree of the feed port is changed according to the position of the shutter slider 41. Namely, the opening of the discharge port can be controlled by the sliding of the valve slide block 41, and the conveying speed of the feed hopper 1 to the conveying belt 30 is controlled.
The compression spring (44) is sleeved on the compression spring support column (43), a first end of the compression spring (44) is used as a free end, and a second end of the compression spring (44) is fixedly connected with the feed hopper (1); the first end of the pressure spring support column (43) is fixedly connected with the first end of the pressure spring (44), and the second end of the pressure spring support column (43) is connected with the valve sliding block (41). The expansion direction of the compression spring 44 is consistent with the sliding direction of the shutter slider 41, and the shutter slider 41 is pushed to slide by the displacement of the compression spring support 43 in the expansion process of the compression spring 44.
The slide rod 45 is connected with the feed hopper 1 in a sliding way, and the sliding direction of the slide rod is consistent with that of the shutter slide block 41. The driving motor 48 is installed on the feeding hopper 1 for driving the slide rod 45 to slide. Specifically, in the present embodiment, the first chute 40 is mounted on the hopper 1, and the slide rod 45 is slidably mounted in the first chute 40. In specific implementation, the driving motor 48 may be connected to the sliding rod 45 through an electric push rod, and the driving motor 48 drives the electric push rod to extend and retract to control the sliding rod 45 to slide.
Referring to fig. 6, the present embodiment further provides another power mechanism, where the power mechanism further includes: motor bracket 4, crank 46 and connecting rod 47. The motor bracket 4 is arranged on the feed hopper 1, the crank 46 is rotationally arranged on the motor bracket 4, and the driving motor 48 is arranged on the motor bracket 4 and is used for driving the crank 46 to rotate. One end of the connecting rod 47 is hinged with the crank 46, and the other end is hinged with the slide rod 45. Thus, when the driving motor 48 drives the crank 46 to rotate, the crank 46 drives the slide rod 45 to reciprocate through the connecting rod 47.
Specifically, in the embodiment, the adjusting block (27) is positioned between the slide rod (45) and the pressure spring (44), and the adjusting block (27) is a wedge-shaped block. The adjusting block 27 has a gradual width in a direction perpendicular to the sliding direction of the slide rod 45, and the redundant gap between the slide rod 45 and the compression spring 44 can be adjusted by adjusting the height of the adjusting block 27 relative to the slide rod 45 and the compression spring 44. Thus, during the reciprocating movement of the slide rod 45, intermittent striking of the adjusting block 27 is achieved. The lever 2 drives the adjusting block 27 to move up and down in the rotating process, and the vibration amplitude and the frequency of the pressure spring (44) change along with the change of the up-down position of the adjusting block 27 in the sliding process of the sliding rod 45.
In this embodiment, a first engagement member 42 is provided at one end of the slide rod 45 facing the adjustment block 27, and a second engagement member 49 is provided at a first end of the pressure spring 44. The adjusting block 27 is located between the first conjunction member 42 and the second conjunction member 49, and the force-bearing area of the adjusting block 27 is increased by cooperation of the three members, which is beneficial to further guarantee the stable sliding of the valve sliding block 41. Specifically, in the present embodiment, the adjusting block 27 has an inverted trapezoidal structure, and the first engaging member 42 and the second engaging member 49 are both of a right-angled triangle structure with an inclined surface matching with an inclined surface of one side of the adjusting block 27. Namely, the end surface of the first conjunction piece (42) connected with the slide rod (45) is vertical to the sliding direction of the slide rod (45), and the end surface of the first conjunction piece (42) facing the adjusting block (27) is parallel to the end surface of the adjusting block (27) facing the first conjunction piece (42); the end face of the second conjunction piece (49) connected with the pressure spring (44) is perpendicular to the expansion direction of the pressure spring (44), and the end face of the second conjunction piece (49) facing the adjusting block (27) is parallel to the end face of the adjusting block (27) facing the second conjunction piece (49). Therefore, the stability of the stress directions of the first conjunction member 42, the adjusting block 27 and the second conjunction member 49 is ensured, so that the stability of the stress direction of the pressure spring 44 is ensured, and the stable movement of the valve sliding block 41 is ensured.
Referring to fig. 3 and 4, in the present embodiment, the weight unit includes: a weight 22 and a weight support bar 23. Weight bracing piece 23 is installed in lever 2 first end, and weight 22 slidable mounting is on weight bracing piece 23 to weight (22) move along lever (2) moment direction at weight bracing piece (23). Therefore, the lever 2 can be kept in a balanced state under the condition of different tea flow by adjusting the position of the weight 22 on the weight supporting rod 23.
In this embodiment, the weight unit further includes: weight support 21, positioning polished rod 25 and weight motor 24. Weight support 21 installs on lever 2, and weight bracing piece 23 adopts the screw lead screw and rotates to install on weight support 21, and weight 22 and 23 threaded connection of weight bracing piece, location polished rod 25 pass weight 22 and be on weight support 21 with being on a parallel with weight bracing piece 23 ground. The weight motor 24 is installed on the weight support 21 and is used for driving the weight support rod 23 to rotate, and the position of the weight 22 can be automatically adjusted according to the tea production demand process.
In this embodiment, the device further comprises a controller, and a tension sensor for detecting a stress condition is further installed at the second end of the lever 2. The controller is connected with the tension sensor and the weight motor 24 respectively, and the controller is used for controlling the weight motor 24 to adjust the position of the weight 22 according to the detection value of the tension sensor. In this embodiment, the controller can further control the position of weight 22 according to tealeaves weight control weight motor 24 on conveyer belt 30 to the realization is to the upper and lower displacement control of adjusting 27, thereby controls the maximum aperture of discharge gate, carries out accurate control according to tealeaves flow demand.
Specifically, in the present embodiment, one tension sensor, i.e., the first tension sensor 33 and the second tension sensor 34, is provided at each of the two ends of the bifurcated end of the lever 2. A first lifting lug 31 and a second lifting lug 32 are respectively arranged at two end parts of the forked end of the lever 2, the first lifting lug 31 and the second lifting lug 32 are respectively connected with a first inverted T-shaped web 35 and a second inverted T-shaped web 36, a first tension sensor 33 is arranged between the first lifting lug 31 and the first inverted T-shaped web 35, and a second tension sensor 34 is arranged between the second lifting lug 32 and the second inverted T-shaped web 36.
In this embodiment, a level sensor 6 is further installed on the feed hopper 1. In the embodiment, the material level sensor is a CKSR-80 rotation resistance type motor material level sensor. When the tea material level reaches 60mm below the upper edge of the feed hopper 1, the shaft head blade of the material level sensor 6 is subjected to resistance, and the resistance moment of the motor is increased, so that a normally closed contact of a power supply circuit of the motor connected in series with the tea conveying device (vertical conveying or horizontal conveying) is opened through a mechanical device, the motor of the tea conveying device (vertical conveying or horizontal conveying) is de-energized, the feeding is stopped, and the material level is ensured; when the material level is reduced, the resistance of the shaft head blade of the material level sensor 6 is reduced, so that the normal rotation is recovered, the normally closed contact of the power supply circuit of the motor of the tea conveying device (vertical conveying or horizontal conveying) is reset in series, the motor of the tea conveying device (vertical conveying or horizontal conveying) is electrified, and the feeding is recovered. So relapse, guarantee this the control unit normal during operation, the material level in the feeder hopper 1 remains throughout for feeder hopper 1 goes up along below 60mm, guarantees to stabilize the normal material level in the feeder hopper 1 and to the stable feed of conveyer belt 30.
This the control unit during operation in the system, at first with weight motor 24 resets, makes weight 22 be located initial position and is the rightmost end of weight bracing piece, sets for the tealeaves flow according to tealeaves production technology demand: the design can be manually carried out on a PLC touch screen, different flow rates in each process time interval can be set by programming according to process requirements, and after a controller, namely a PLC program, reads current flow rate requirement data, the actual weight of the conveying belt 30 is monitored in real time according to the tension sensors (namely the first tension sensor 33 and the second tension sensor 34); meanwhile, the controller, namely a PLC program, also acquires the rotating speed data of the servo motor 39 and the balance condition of the lever 2 in real time, and calculates the length of the driven end, namely the first end weight force arm, of the lever 2, so that the turning (forward rotation or reverse rotation) and the number of rotating turns of the weight motor 24 are calculated, and the weight 22 reaches the correct position. The weight unit is kept unchanged after setting the moment and adjusting the weight 22 to the corresponding position; meanwhile, an external conveyor supplies materials to the feeding hopper 1, the material level is kept under the control of the motor material level sensor 6, the materials are supplied to the conveying belt 30 through the vibration of the valve sliding block 41, at the moment, the materials on the conveying belt 30 are less, the first end of the lever 2 is heavier, the adjusting block 27 is pressed down along with the hanging rod 26, at the moment, the first conjunction piece 42 and the second conjunction piece 49 are attached to the adjusting block 27 from two opposite sides, and as no gap exists, the valve sliding block 41 is driven by the crank 46, the connecting rod 47, the sliding block 45, the first conjunction piece 42, the second conjunction piece 49, the adjusting block 27 and other components to push and rebound by the pressure spring 44 during return stroke to perform reciprocating vibration with the maximum amplitude of 60mm, so that the material is quickly supplied to the discharge port of the feeding hopper 1 at the maximum average opening degree, and the servo; along with the increase of the weight of tea leaves on the conveying belt 30, the second end of the lever 2 descends, the first end rises, the adjusting block 27 is pulled up and rises by the hanging rod 26 at the moment, gaps are formed between the first conjunction piece 42 and the second conjunction piece 49 and the adjusting block 27 and gradually increase, the valve sliding block 41 is pushed by the crank 46, the connecting rod 47, the sliding block 45, the first conjunction piece 42, the second conjunction piece 49, the wedge block 27 and other components and rebounds by the compression spring 44 during return stroke, the amplitude is gradually reduced, the opening degree of a discharge port of the feeding hopper 1 is gradually reduced, and the weight of the tea leaves falling from the feeding hopper 1 is reduced; when tealeaves on conveyer belt 30 reached design weight, then lever 2 is in horizontal balance state, and then the discharge gate of feeder hopper 1 stabilizes the feed with average aperture to guarantee the stable flow of conveyer belt.
The control unit also has the function of automatically controlling the flow of tea, because the volume weight and the firmness of tea materials in a tea production line are changed, the instability of a feeding system can be caused, when the weight of the tea materials on the tea conveying belt 30 exceeds the set weight, the horizontal state of the lever 2 can be changed into a state that the first end is higher and the second end is lower, the average opening degree of a discharge hole of the feed hopper 1 is reduced, the weight of the tea falling from the feed hopper 1 is reduced until the flow returns to the normal value, and the lever 2 returns to the horizontal state; when the weight of the tea material on the tea conveying belt 30 is smaller than the set weight at a certain moment, the horizontal state of the lever 2 is changed to be that the first end is lower than the second end, the average opening degree of the discharge hole of the feed hopper 1 is increased, the weight of the tea falling from the feed hopper 1 is increased until the flow rate returns to a normal value, and the lever returns to the horizontal state; thereby completing the function of automatically controlling the flow of the tea leaves.
The adjusting block 27 adopts an inverted trapezoidal structure. Thus, in a balanced state of the lever 2, when tea materials on the conveying belt 30 increase, the second end of the lever 2 descends and the first end ascends, so that the adjusting block 27 is driven to ascend, the residual gap between the slide rod 45 and the pressure spring 44 is enlarged, the impact force of the slide rod 45 on the adjusting block 27 is reduced, the amplitude of the pressure spring 44 is reduced, the reciprocating displacement amplitude of the valve slide block 41 is reduced, the maximum opening of the discharge port is reduced, and the flow of the discharge port is reduced; when tea materials on the conveying belt 30 are reduced, the second end of the lever 2 rises and the first end of the lever 2 descends, so that the adjusting block 27 is driven to descend, the residual gap between the slide rod 45 and the pressure spring 44 is reduced, the impact force of the slide rod 45 on the adjusting block 27 is increased, the amplitude of the pressure spring 44 is increased, the reciprocating displacement amplitude of the valve slide block 41 is increased, the maximum opening degree of the discharge port is increased, and the flow of the discharge port is increased.
Referring to fig. 9 and 9, in the present embodiment, a discharge sloping plate 12 is disposed at the bottom of the feed hopper 1, and a gap between the discharge sloping plate 12 and the shutter forms the discharge port. The feed hopper 1 is positioned at two sides of the discharge sloping plate 12 and is respectively provided with an arc-shaped groove plate 14 on two side plates vertical to the discharge sloping plate 12, and the arc-shaped groove plate 14 is provided with an arc-shaped groove hole 141 and a positioning hole. Specifically, the two arc-shaped groove plates 14 have the same structure and are perpendicular to the plane of the inclined discharge plate 12. One end of the discharge sloping plate 12 is provided with a sloping plate rotating shaft 121 and a sloping plate adjusting shaft 122 which are parallel to the connecting direction of the two arc-shaped groove plates 14. The inclined plate rotating shaft 121 is matched with the shaft holes of the arc-shaped groove plates 14 at two ends. Specifically, both ends of the swash plate adjustment shaft 122 are fitted to the arc-shaped slots 141. The discharge sloping plate 12 is installed on the feed hopper 1 through the sloping plate rotating shaft 121 and the sloping plate adjusting shaft 122 in cooperation with the shaft holes of the two arc-shaped groove plates 14. In this embodiment, the position of the swash plate adjustment shaft 122 in the arc-shaped slot 141 is determined and locked by nuts at both ends, and the swash plate 12 is installed by matching both ends of the swash plate rotation shaft 121 with the positioning holes. In this embodiment, the discharge sloping plate 12 can rotate a certain angle around the sloping plate rotating shaft 121, so that the inclination angle of the discharge sloping plate 12 reaches a set angle to adapt to the discharge requirement of tea leaves with different flowability.
Referring to fig. 8, in the present embodiment, the hopper 1 is further provided with a second chute 13, and the shutter slider 41 is slidably mounted in the second chute 13. Specifically, the second sliding groove 13 is of a U-shaped structure, and the second end of the pressure spring 44 is mounted on the rear plate of the second sliding groove 13, so that the pressure spring 44 can rebound based on the second sliding groove 13 after being impacted and compressed.
Referring to fig. 7, the valve slider 41 forms an inclined plane towards one side of the discharge sloping plate 12, the inclined plane cooperates with the discharge sloping plate 12 to form an inverted-splayed structure, that is, the inclined plane cooperates with the discharge sloping plate 12 to form a funnel structure, so as to facilitate the blanking of the feeding hopper 1.
In this embodiment, still install vibrating motor 5 on feeder hopper 1 to drive feeder hopper 1 vibration prevents that the discharge gate from blockking up.
The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An accurate flow control unit for a tea production line is characterized by comprising a feed hopper (1), a power mechanism, an elastic push rod mechanism, a conveying belt (30) and an adjusting mechanism;
a discharge port is formed in the feed hopper (1), and the conveying belt (30) is arranged on the lower side of the discharge port;
the adjusting end of the end part of the elastic push rod mechanism is inserted into the discharge hole, the push rod of the elastic push rod mechanism reciprocates under the action of self elasticity and a power mechanism, and the adjusting end reciprocates along with the push rod to adjust the opening of the discharge hole;
the adjusting mechanism is used for adjusting the thrust of the power mechanism to the elastic push rod mechanism according to the bearing of the conveying belt (30) so as to change the expansion range of the adjusting end in the discharging hole.
2. The accurate flow control unit for tea production line according to claim 1, wherein the adjusting mechanism comprises a lever (2), a weight unit and a linkage unit;
the lever (2) is hinged with the feed hopper (1), the end parts of the lever (2) positioned at the two sides of the feed hopper (1) are respectively a first end and a second end, the weight unit is arranged at the first end of the lever (2), and the conveying belt (30) is hinged with the second end of the lever (2); the lever (2) rotates along with the moment difference between the weight unit and the conveyer belt (30);
the linkage unit and the weight unit are arranged on the same side of the lever (2), and the linkage unit adjusts the thrust of the power mechanism to the elastic push rod mechanism according to the rotation of the lever (2).
3. The precise flow control unit for a tea production line according to claim 2, characterized in that the linkage unit comprises a suspension rod (26) and an adjusting block (27) connected to each other, the adjusting block (27) is hinged to the lever (2) through the suspension rod (26), the adjusting block (27) is inserted between the power mechanism and the elastic push rod mechanism, and the shape of the adjusting block (27) is configured such that when the position of the adjusting block (27) between the power mechanism and the elastic push rod mechanism is changed, the thrust force applied by the power mechanism to the elastic push rod mechanism through the adjusting block (27) is also changed.
4. The accurate flow control unit for a tea production line as set forth in claim 2, wherein the power mechanism comprises: a drive motor (48) and a slide bar (45); the sliding rod (45) is connected with the feed hopper (1) in a sliding manner, and the driving motor (48) is used for driving the sliding rod (45) to slide;
the spring lever mechanism includes: a pressure spring support (43), a pressure spring (44) and a valve slide block (41) which is used as an adjusting end of the spring rod mechanism; the valve sliding block (41) is in sliding connection with the feed hopper (1); the compression spring (44) is sleeved on the compression spring support column (43), a first end of the compression spring (44) is used as a free end, and a second end of the compression spring (44) is fixedly connected with the feed hopper (1); a first end of a pressure spring support post (43) is fixedly connected with a first end of a pressure spring (44), and a second end of the pressure spring support post (43) is connected with a valve sliding block (41);
the sliding direction of the sliding rod (45), the expansion direction of the pressure spring (44) and the sliding direction of the valve sliding block (41) are all positioned on the same straight line;
the adjusting block (27) is a wedge-shaped block; the adjusting block (27) is positioned between the slide rod (45) and the pressure spring (44); the lever (2) drives the adjusting block (27) to move up and down in the rotating process, and the vibration amplitude of the pressure spring (44) changes along with the change of the up-down position of the adjusting block (27) in the sliding process of the sliding rod (45).
5. The accurate flow control unit for a tea production line as set forth in claim 4, wherein the power mechanism further comprises: a first engaging member (42) connected to an end of the slide rod (45) facing the adjustment block (27); the spring rod mechanism also comprises a second conjunction piece (49) arranged at the first end of the pressure spring (44); the end face of the first conjunction piece (42) connected with the sliding rod (45) is vertical to the sliding direction of the sliding rod (45), and the end face of the first conjunction piece (42) facing the adjusting block (27) is parallel to the end face of the adjusting block (27) facing the first conjunction piece (42); the end face of the second conjunction piece (49) connected with the pressure spring (44) is perpendicular to the expansion direction of the pressure spring (44), and the end face of the second conjunction piece (49) facing the adjusting block (27) is parallel to the end face of the adjusting block (27) facing the second conjunction piece (49).
6. The accurate flow control unit for a tea production line as set forth in claim 2, wherein the weight unit comprises: a weight (22) and a weight support rod (23); the weight (22) is connected with the first end of the lever (2) through the weight support rod (23), and the weight (22) moves along the moment direction of the lever (2) on the weight support rod (23).
7. The accurate flow control unit for a tea production line as set forth in claim 6, wherein the weight unit further comprises: the weight support (21), the positioning polished rod (25) and the weight motor (24); the weight support (21) is arranged on the lever (2), the weight support rod (23) is rotatably arranged on the weight support (21) by adopting a threaded lead screw, the weight (22) is in threaded connection with the weight support rod (23), and the positioning polish rod (25) penetrates through the weight (22) and is arranged on the weight support (21) in parallel with the weight support rod (23); the weight motor (24) is arranged on the weight bracket (21) and is used for driving the weight support rod (23) to rotate.
8. The accurate flow control unit for the tea production line according to claim 7, further comprising a controller, wherein the second end of the lever (2) is further provided with a tension sensor for detecting a stress condition; the controller is connected with the tension sensor and the weight motor (24) respectively, and the controller is used for controlling the weight motor (24) to adjust the position of the weight (22) according to the detection value of the tension sensor.
9. The accurate flow control unit for the tea production line according to claim 1, wherein the bottom of the feed hopper (1) is provided with a discharge sloping plate (12), and a gap between the discharge sloping plate (12) and the valve forms the discharge port; the feeding hopper (1) is positioned on two sides of the discharging inclined plate (12) and is vertical to two side plates of the discharging inclined plate (12), an arc-shaped groove plate (14) is respectively arranged on the two side plates, an arc-shaped groove hole (141) and a positioning hole are formed in the arc-shaped groove plate (14), and the arc-shaped groove hole (141) is positioned on a circle with the positioning hole as a circle; one end of the discharge sloping plate (12) is provided with a sloping plate rotating shaft (121) and a sloping plate adjusting shaft (122) which are parallel to the connecting line direction of the two arc-shaped groove plates (14); two ends of the inclined plate adjusting shaft (122) are matched with the arc-shaped slotted holes (141), and two ends of the inclined plate rotating shaft (121) are matched with the positioning holes; the discharging inclined plate (12) is arranged on the feed hopper (1) through the cooperation of an inclined plate rotating shaft (121), an inclined plate adjusting shaft (121) and the shaft holes of the two arc-shaped groove plates (14).
10. The precise flow control unit for the tea production line according to claim 9, wherein the feed hopper (1) is further provided with a second chute (13), and the shutter slider (41) is slidably mounted in the second chute (13); and one side of the valve sliding block (41) facing the discharge sloping plate (12) forms an inclined plane which is matched with the discharge sloping plate (12) to form an inverted V-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011056148.9A CN112224805A (en) | 2020-09-30 | 2020-09-30 | A accurate flow control unit for tealeaves production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011056148.9A CN112224805A (en) | 2020-09-30 | 2020-09-30 | A accurate flow control unit for tealeaves production line |
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| CN112224805A true CN112224805A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011056148.9A Pending CN112224805A (en) | 2020-09-30 | 2020-09-30 | A accurate flow control unit for tealeaves production line |
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| CN107600985A (en) * | 2017-09-18 | 2018-01-19 | 董雪霞 | It is a kind of to adjust the feed device of feeding amount by vibrating |
| CN209166606U (en) * | 2018-11-14 | 2019-07-26 | 南通奥拓自控设备有限公司 | A kind of pre- feeding belt scale of high-precision |
| CN111717683A (en) * | 2020-06-30 | 2020-09-29 | 南京工程学院 | Feeding device capable of quickly adjusting feeding amount |
| CN111717682A (en) * | 2020-06-30 | 2020-09-29 | 南京工程学院 | Feeding device capable of quickly adjusting feeding amount by using stepless speed change mechanism |
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- 2020-09-30 CN CN202011056148.9A patent/CN112224805A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB740844A (en) * | 1952-06-23 | 1955-11-23 | Skip Compagnie G M B H | Material weighing bins for skip conveyor devices |
| CN104724480A (en) * | 2015-02-04 | 2015-06-24 | 张有科 | Conveying device capable of automatically adjusting feeding amount and control method thereof |
| CN205518625U (en) * | 2016-03-11 | 2016-08-31 | 正安县金林茶业有限责任公司 | Tea winnower |
| CN206336734U (en) * | 2016-12-23 | 2017-07-18 | 安徽六国化工股份有限公司 | A kind of gate for being used to adjust belt conveyor feed hopper flow |
| CN107600985A (en) * | 2017-09-18 | 2018-01-19 | 董雪霞 | It is a kind of to adjust the feed device of feeding amount by vibrating |
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