Metering device for salt cake packaging

Abstract

The metering device comprises a hopper, a resonance unit, a first motor, a volume metering disc and a plurality of volume metering cavities, the volume metering cavities are formed in the volume metering disc at equal intervals, the hopper deviates from the circle center position of the volume metering disc, and a discharging opening in the bottom end of the hopper right faces the volume metering cavities; a first motor is installed in the middle of the volume metering disc through a rack, and the output end of the first motor perpendicularly penetrates through the volume metering disc and then is connected with the center of a second rack connected with the volume metering cavities so as to drive the volume metering cavities to rotate. The first motor drives the volume metering disc to rotate by a certain angle, so that one volume metering cavity in the volume metering disc faces the discharge port at the bottom end of the hopper, materials fall into the volume metering cavity from the hopper, and the stacking density of the materials tends to be stable by means of exciting force of the first motor; whether the material level reaches the packaging volume or not is detected by detecting the rotating speed and time of the first motor through the ultrasonic sensor, and then the next volume metering cavity is turned to continue blanking metering.

Description

Technical Field

[0001] The utility model relates to a metering device for salt packaging, belonging to the field of edible salt production equipment. Background Art

[0002] The production process of sea salt includes the steps of absorbing tide, brine, collecting salt, washing salt, and drying until it can be quantitatively packaged into bags. When quantitatively packaging, an iodized salt automatic packaging machine is generally used for quantitative packaging. The metering structure of the iodized salt automatic packaging machine is installed under the hopper. The stepper motor drives the rotating disk to rotate a certain angle so that one of the metering cavities is aligned with the lower hopper. The material falls from the hopper into the metering cavity. The ultrasonic sensor next to the hopper detects the material level to reach the volume required for packaging, and then earns the next metering cavity to continue the material metering. In this process, since the particle size of edible salt is 20-40 mesh, and the particle size of edible salt is relatively small, the hopper will hang on the inner wall of the hopper during continuous material discharge, and the material cannot be discharged cleanly.

[0003] The utility model provides a metering device for salt packaging which does not require an additional power source and knocks resonance. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a metering device for salt packaging that does not require an additional power source or knocking resonance.

[0005] The utility model is achieved in this way:

[0006] A metering device for salt packaging, comprising a hopper, a resonance unit, a first motor, a metering disk and a plurality of metering cavities, wherein the metering disk has a plurality of metering cavities arranged at equal distances therein, the hopper is offset from the center of the metering disk, and a discharge port at the bottom end of the hopper faces the metering cavity;

[0007] A first motor is installed in the middle of the meter capacity plate through a frame, and an output end of the first motor vertically penetrates the meter capacity plate and is connected to the center of a second frame connected to a plurality of meter capacity cavities to drive the meter capacity cavities to rotate;

[0008] The resonance unit is located between the first motor and the upper surface of the meter disk, and comprises an eccentric wheel, a synchronous wheel, a movable rod, and a guide block. The eccentric wheel has an axial hole that deviates from the center of the circle and is penetrated and fixed by the output shaft of the first motor;

[0009] The eccentric wheel drives the synchronous wheel on the same horizontal plane to move horizontally. A movable rod is also fixed on the side of the synchronous wheel away from the eccentric wheel. The movable rod is driven by the synchronous wheel to move back and forth in the middle of the guide block, intermittently touching the outer surface of the hopper. The guide block is fixed on the outer surface of the hopper.

[0010] As a further improvement, a spring is sleeved on the movable rod between the synchronous wheel and the guide block.

[0011] As a further improvement, an annular groove is provided on the arc-shaped side surface of the eccentric wheel, and the groove cooperates with the synchronous wheel.

[0012] As a further improvement, the movable rod comprises a U-shaped head, a fixed shaft and a free rod, a synchronous wheel is accommodated in the middle of the U-shaped head, and the fixed shaft runs through one side of the U-shaped head to the other side and limits the synchronous wheel at the same time;

[0013] A free rod is vertically fixed on the other side surface of the fixed shaft opposite to the synchronous wheel.

[0014] As a further improvement, a silicone sleeve is provided on the free end of the free rod that contacts the outer surface of the hopper.

[0015] As a further improvement, the guide block includes a main body and a limiting groove. The main body is rectangular, and a limiting groove is opened in the middle of the main body. The limiting groove extends to the surface of the main body, and the limiting groove is used for the movable rod to move.

[0016] As a further improvement, the four corners of the main body are fixed to the outer surface of the hopper by screws or bolts.

[0017] As a further improvement, the silicone sleeve is made of silicone material.

[0018] As a further improvement, a turntable is provided on the output shaft of the first motor directly below the resonance unit, and an ultrasonic sensor is fixed to the frame via a bracket, and the ultrasonic sensor is vertically facing the turntable.

[0019] As a further improvement, the rotating disk is provided with strip-shaped gaps at equal intervals.

[0020] The beneficial effects of the utility model are:

[0021] ① The first motor of the utility model drives the metering disk to rotate a certain angle, so that a metering cavity in the middle metering disk is aligned with the discharge port at the bottom of the hopper, and the material falls into the metering cavity from the hopper. With the help of the exciting force of the first motor, the stacking density of the material tends to be stable, and the ultrasonic sensor detects the speed and time of the first motor to detect whether the material level reaches the packaging volume, and then turns to the next metering cavity to continue the material metering.

[0022] ② The utility model can synchronously drive the resonance unit to intermittently knock the hopper when the output shaft of the first motor rotates, thereby preventing the material from hanging on the wall.

[0023] ③ The free end of the free rod of the utility model that contacts the outer surface of the hopper is covered with a silicone sleeve. The hopper is generally made of stainless steel or alloy materials. Indirect knocking on the hopper is likely to produce knocking sounds. The silicone sleeve wrapped around the outer surface of the free rod can reduce the knocking noise and make the device run more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of a metering device for salt packaging provided by an embodiment of the utility model.

[0026] Figure 2 It is a partial structural schematic diagram of a metering device for salt packaging provided by an embodiment of the utility model.

[0027] Figure 3 It is a schematic diagram of the structure of a resonance unit of a metering device for salt packaging provided by an embodiment of the utility model.

[0028] Figure 4 The present invention provides a schematic diagram of the structure of a resonance unit of a metering device for salt packaging. Figure 1 .

[0029] Figure 5 The present invention provides a schematic diagram of the structure of a resonance unit of a metering device for salt packaging. Figure 2 .

[0030] Figure 6 The utility model is a schematic diagram of the structure of an eccentric wheel of a metering device for salt packaging provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0032] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] Reference Figure 1-Figure 6 As shown, this embodiment provides a specific implementation method for a metering device for salt packaging, including a hopper 10, a resonance unit 20, a first motor 30, a metering disk 40 and a plurality of metering cavities 50, wherein a plurality of metering cavities 50 are arranged at equal distances inside the metering disk 40, the hopper 10 deviates from the center of the metering disk 40, and the discharge port at the bottom end of the hopper 10 faces the metering cavity 50;

[0034] A first motor 30 is installed in the middle of the meter capacity disk 40 through a frame 60. The output end of the first motor 30 vertically penetrates the meter capacity disk 40 and is connected to the center of a second frame connected to a plurality of meter capacity cavities 50 to drive the meter capacity cavities 50 to rotate.

[0035] The first motor 30 of the utility model drives the metering disk 40 to rotate a certain angle, so that a metering cavity 50 in the middle metering disk 40 is aligned with the discharge port at the bottom of the hopper, and the material falls from the hopper 10 into the metering cavity 50. With the help of the exciting force of the first motor 10, the stacking density of the material tends to be stable. The ultrasonic sensor 11 detects the rotation speed and time of the first motor 10 to detect whether the material level reaches the packaging volume, and then turns to the next metering cavity 50 to continue the material metering. In order to ensure that the material in the hopper does not hang on the wall, a synchronous resonance unit is designed to knock and resonate the hopper 10 in combination with the exciting force of the first motor 10, so that the material discharge is more concentrated. The material described above and below refers to refined salt with a particle size of 20 mesh-40 mesh.

[0036] Among them, the resonance unit 20 is located between the first motor 30 and the upper surface of the volumetric disk 40; when the output shaft of the first motor 30 rotates, it can synchronously drive the resonance unit 20 to intermittently knock on the hopper 10 to avoid the occurrence of material hanging on the wall.

[0037] The resonance unit 20 comprises an eccentric wheel 201, a synchronous wheel 202, a movable rod 203, and a guide block 204. The eccentric wheel 201 has an axial hole that deviates from the center of the circle and is penetrated and fixed by the output shaft of the first motor 30.

[0038] The eccentric wheel 201 drives the synchronous wheel 202 on the same horizontal plane to move horizontally. A movable rod 203 is also fixed on the side of the synchronous wheel 202 away from the eccentric wheel 201. The movable rod 203 is driven by the synchronous wheel 202 to move back and forth in the middle of the guide block 204, intermittently touching the outer surface of the hopper 10. The guide block 204 is fixed on the outer surface of the hopper 10.

[0039] Furthermore, a spring 205 is sleeved on the movable rod 203 between the synchronous wheel 202 and the guide block 204 to ensure that during the rotation of the eccentric wheel 201, the synchronous wheel 202 can always maintain contact with the eccentric wheel 201 under the elastic pressure of the spring 205, thereby ensuring the normal center of the resonance unit.

[0040] In one specific embodiment, an annular groove 211 is opened on the arc-shaped side of the eccentric wheel 201, and the groove 211 cooperates with the synchronous wheel 202. The side of the synchronous wheel 202 is embedded in the groove 211 and moves along the groove 211. The horizontal movement trajectory is limited and will not move up and down, so as to improve the stability of the operation of the device.

[0041] Furthermore, the movable rod 203 includes a U-shaped head 231, a fixed shaft 232 and a free rod 233. The middle position of the U-shaped head 231 accommodates the synchronous wheel 202. The fixed shaft 232 passes through one side of the U-shaped head 231 to the other side, and at the same time limits the synchronous wheel 202, while allowing the synchronous wheel 202 to rotate, and will not be fixed and cannot be rotated.

[0042] A free rod 233 is vertically fixed on the other side of the fixed shaft 232 opposite to the synchronous wheel 202 .

[0043] Furthermore, a silicone sleeve 234 is provided on the free end of the free rod 233 that contacts the outer surface of the hopper 10. The hopper 10 is generally made of stainless steel or alloy materials. Indirect knocking on the hopper 10 is likely to produce knocking sounds. The outer surface of the free rod 233 wrapped with the silicone sleeve 234 can reduce the knocking noise and make the device run more stably.

[0044] In one specific embodiment, the guide block 204 includes a main body 241 and a limiting groove 242. The main body 241 is rectangular, and a limiting groove 242 is opened in the middle of the main body 241. The limiting groove 242 extends to the surface of the main body 241, and the limiting groove 242 is provided for the movable rod 203 to move. The movement of the movable rod 203 can be observed intuitively, which is convenient for maintenance.

[0045] In one specific embodiment, the four corners of the main body 241 are fixed to the outer surface of the hopper 10 by screws or bolts to improve the stability of the device.

[0046] Furthermore, the silicone sleeve 234 is made of silicone material. Silica gel, also known as silica gel, is a highly active adsorption material and an amorphous substance. Its main component is silicon dioxide. Silica gel is soft, has good stability, and is not easy to burn.

[0047] As a possible specific implementation of the utility model, a turntable 80 is provided on the output shaft of the first motor 30 directly below the resonance unit 20 , and an ultrasonic sensor 11 is fixed to the frame 60 via a bracket 90 , and the ultrasonic sensor 11 is vertically facing the turntable 80 .

[0048] Furthermore, the rotating disk 80 has strip-shaped gaps at equal distances.

[0049] Ultrasonic speed measurement is achieved by using the high-frequency vibration characteristics of ultrasonic waves. When the ultrasonic sensor 11 is fixed to one side of the rotating shaft, the ultrasonic wave will continuously change its propagation direction as the shaft rotates. This will cause the transmission time of the ultrasonic wave to change, thereby generating a reflected signal. By calculating the transmission time of the ultrasonic wave from the sensor to the object, the speed of the rotating object can be determined.

[0050] The rotation speed of the first motor 10 is measured and detected in combination with the measured time to detect whether the material level reaches the volume of the package.

[0051] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A metering device for salt packaging, characterized in that: The invention comprises a hopper (10), a resonance unit (20), a first motor (30), a volume counting plate (40) and a plurality of volume counting chambers (50), wherein the volume counting plate (40) is provided with a plurality of volume counting chambers (50) at equal distances therefrom, the hopper (10) is offset from the center of the volume counting plate (40), and a discharge port at the bottom end of the hopper (10) faces the volume counting chamber (50); A first motor (30) is installed in the middle of the measuring volume disk (40) through a frame (60); an output end of the first motor (30) vertically penetrates the measuring volume disk (40) and is connected to the center of a second frame connected to a plurality of measuring volume cavities (50) to drive the measuring volume cavities (50) to rotate; The resonance unit (20) is located between the first motor (30) and the upper surface of the capacitance meter disk (40), and the resonance unit (20) comprises an eccentric wheel (201), a synchronous wheel (202), a movable rod (203), and a guide block (204); the eccentric wheel (201) has an axial hole that deviates from the center of the circle and is penetrated and fixed by the output shaft of the first motor (30); The eccentric wheel (201) drives the synchronous wheel (202) on the same horizontal plane to move horizontally. A movable rod (203) is also fixed on the side of the synchronous wheel (202) away from the eccentric wheel (201). The movable rod (203) is driven by the synchronous wheel (202) to move forward and backward in the middle of the guide block (204), intermittently touching the outer surface of the hopper (10). The guide block (204) is fixed on the outer surface of the hopper (10).

2. The metering device for salt packaging according to claim 1, characterized in that: A spring (205) is sleeved on the movable rod (203) between the synchronous wheel (202) and the guide block (204).

3. The metering device for salt packaging according to claim 1, characterized in that: An annular groove (211) is formed on the arc-shaped side surface of the eccentric wheel (201), and the groove (211) cooperates with the synchronous wheel (202).

4. The metering device for salt packaging according to claim 1, characterized in that: The movable rod (203) comprises a U-shaped head (231), a fixed shaft (232) and a free rod (233); a synchronous wheel (202) is accommodated in the middle of the U-shaped head (231); the fixed shaft (232) penetrates from one side of the U-shaped head (231) to the other side, and limits the synchronous wheel (202); A free rod (233) is vertically fixed on the other side surface opposite to the fixed shaft (232) and the synchronous wheel (202).

5. The metering device for salt packaging according to claim 4, characterized in that: The free end of the free rod (233) in contact with the outer surface of the hopper (10) is covered with a silicone sleeve (234).

6. The metering device for salt packaging according to claim 1, characterized in that: The guide block (204) comprises a main body (241) and a limiting groove (242); the main body (241) is rectangular, and a limiting groove (242) is provided in the middle of the main body (241); the limiting groove (242) extends to the surface of the main body (241), and the limiting groove (242) is provided for the movable rod (203) to move.

7. The metering device for salt packaging according to claim 6, characterized in that: The four corners of the main body (241) are fixed to the outer surface of the hopper (10) by screws or bolts.

8. The metering device for salt packaging according to claim 5, characterized in that: The silicone sleeve (234) is made of silicone material.

9. The metering device for salt packaging according to claim 5, characterized in that: A turntable (80) is disposed on the output shaft of the first motor (30) directly below the resonance unit (20), and an ultrasonic sensor (11) is fixed to the frame (60) via a bracket (90), wherein the ultrasonic sensor (11) is vertically facing the turntable (80).

10. The metering device for salt packaging according to claim 9, characterized in that: The rotating disk (80) is provided with strip-shaped notches at equal intervals.

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