Precise metering dosing machine adopting weightlessness method

Abstract

The utility model relates to a weightlessness method accurate metering dosing machine which comprises a driving device, a feeding hopper body, a material storage box, a stirrer, a medicine conveying screw rod, a medicine conveying barrel assembly, a weighing system and an electric control box, the material storage box, the feeding hopper body and the medicine conveying barrel are sequentially connected, the stirrer is arranged in the feeding hopper body, the medicine conveying screw rod is arranged in the medicine conveying barrel assembly, and the weighing system is arranged in the medicine conveying barrel assembly. The driving device is respectively connected with the stirrer and the medicine conveying screw rod, the driving device, the feeding hopper body, the material storage box, the stirrer, the medicine conveying screw rod and the medicine conveying barrel assembly are all arranged on the weighing system, the electric control box and the weighing system are separately arranged, and the electric control box is respectively and electrically connected with the weighing system and the driving device. The weightlessness-method accurate-metering chemical dosing machine can realize accurate and quantitative delivery of chemical quantity and reduce blockage and jamming.

Description

Technical Field

[0001] The utility model relates to the field of feeding devices, in particular to a weight-loss method accurate metering dosing machine. Background Art

[0002] In the wastewater treatment industry, dosing machines are commonly used to add loose, easily soluble, dry solid chemicals to a preparation tank for agitation and dissolution. These machines feed the dry chemicals through a hopper into a conveyor system, where they are then programmed to be delivered directly into the water at a controlled, timed and quantitative rate. There are many common dosing machines on the market, but most suffer from issues such as inaccurate delivery, blockage, and compaction. Furthermore, they are difficult to repair and have high maintenance costs, making them difficult to achieve effective results. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a weight-loss method precise metering dosing machine, which can achieve precise quantitative delivery of medicines and reduce blockage and obstruction.

[0004] To achieve the purpose of the present invention, the present invention provides a weightless method precise metering dosing machine, including a driving device, a feeding hopper body, a storage box, a stirrer, a drug delivery screw, a drug delivery cartridge assembly, a weighing system and an electrical control box. The storage box, the feeding hopper body and the drug delivery cartridge are connected in sequence, the stirrer is arranged in the feeding hopper body, the drug delivery screw is arranged in the drug delivery cartridge assembly, the driving device is respectively connected to the stirrer and the drug delivery screw, the driving device, the feeding hopper body, the storage box, the stirrer, the drug delivery screw and the drug delivery cartridge assembly are all arranged on the weighing system, the electrical control box is separately arranged from the weighing system, and the electrical control box is respectively electrically connected to the weighing system and the driving device.

[0005] In some embodiments of the present invention, the driving device includes a motor, a reduction gearbox, a screw drive shaft and a stirring shaft, the motor is connected to the input end of the reduction gearbox, the reduction gearbox has multiple output ends, and the screw drive shaft and the stirring shaft are respectively connected to different output ends.

[0006] In some embodiments of the present invention, the motor is an AC servo motor.

[0007] In some embodiments of the present invention, the medicine delivery screw is a twin screw, and the number of the screw drive shafts is two and they are arranged in parallel.

[0008] In some embodiments of the present invention, the reduction gearbox is configured such that the rotational speed of the stirring shaft is less than the rotational speed of the screw drive shaft.

[0009] In some embodiments of the present invention, the stirring shaft is arranged above the screw transmission shaft.

[0010] In some embodiments of the present invention, the screw drive shaft and the medicine delivery screw are fixed by using a built-in bayonet.

[0011] In some embodiments of the present invention, the feed hopper body includes a hemispherical hopper body, the area of ​​the hemispherical hopper body gradually decreases from top to bottom, the upper end of the feed hopper body is connected to the storage box, and the lower end of the feed hopper body is connected to the feeding end of the drug delivery screw; the agitator includes at least two arc-shaped blades, the blades rotate around the center of the hemispherical hopper body, and the ends of the blades are adjacent to or in contact with the inner wall of the feed hopper body.

[0012] In some embodiments of the present invention, the material storage box includes a cylinder, a cone connected to the bottom end of the cylinder, and a box cover connected to the top end of the cylinder; the inner wall of the cylinder and the inner wall of the cone are both smooth walls.

[0013] In some embodiments of the present invention, the cylinder and the cone are made of stainless steel.

[0014] In some embodiments of the present invention, the bottom end of the cone is locked with the feed hopper body by a clamp, and a sealing ring is provided between the bottom end of the cone and the feed hopper body.

[0015] In some embodiments of the present invention, a moisture-proof device is provided on the inner side of the box cover.

[0016] In some embodiments of the present invention, the drug delivery screw is made of stainless steel 304, the drug delivery screw includes solid surface spiral blades, and the surface of the drug delivery screw is smooth.

[0017] In some embodiments of the present invention, the drug delivery screw is a twin screw, and the spiral blades of the twin screw are meshed with each other.

[0018] In some embodiments of the present invention, the drug delivery barrel assembly includes a screw chamber for accommodating the drug delivery screw and a drug delivery port arranged at the discharge end of the screw chamber, and the drug delivery port includes a downward opening and an observation window located at the top of the drug delivery port.

[0019] In some embodiments of the present invention, a sealing ring is provided between the feed end of the screw chamber and the feed hopper body and the two are connected by clamping bolts.

[0020] In some embodiments of the present invention, the weighing system includes a weighing sensor.

[0021] In some embodiments of the present invention, the electrical control box includes a PLC, a servo motor driver and an input receiver, the input receiver is electrically connected to the PLC, the PLC is electrically connected to the weighing sensor and the servo motor driver respectively, and the servo motor driver is electrically connected to the drive device.

[0022] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0023] The utility model adopts the weight-loss method to accurately measure the drug delivery machine. A weighing system is used to measure the total weight of the driving device, the feed hopper body, the storage box, the agitator, the drug delivery screw and the drug delivery barrel assembly, as well as the materials in the feed hopper body, the storage box and the drug delivery barrel assembly. The weight loss of the drug delivery machine during operation, i.e., the amount of medicine delivered by the drug delivery machine, is obtained to achieve accurate quantitative delivery of the medicine. At the same time, the agitator is used to avoid clogging of the material in the feed hopper body, and the drug delivery screw is used to effectively deliver the material, thereby reducing clogging and obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model of a weight-loss method accurate metering dosing machine.

[0025] Figure 2 The utility model is a side structural schematic diagram of an embodiment of a weight-loss method accurate metering dosing machine.

[0026] Figure 3 It is a schematic top view of the structure of an embodiment of the utility model of a weightlessness method accurate metering dosing machine.

[0027] Figure 4 It is a schematic diagram of the main structure of the driving device in an embodiment of the weightlessness method accurate metering dosing machine of the utility model.

[0028] Figure 5 It is a top view of the structure of the driving device in an embodiment of the weightlessness method precise metering dosing machine of the utility model.

[0029] Figure 6 It is a structural schematic diagram of one of the medicine delivery screws in the embodiment of the weightlessness method precise metering medicine feeding machine of the utility model.

[0030] Figure 7 The utility model is a schematic structural diagram of the driving device, the feeding hopper body, the medicine delivery screw and the medicine delivery barrel assembly in the embodiment of the weightlessness method accurate metering medicine delivery machine.

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0032] like Figures 1 to 7As shown, this embodiment provides a weight-loss method accurate metering dosing machine with simple structure, low cost, precise quantitative delivery of medicine, reduced blockage and resistance, meeting the requirements of granular medicines of different properties, and can be widely adapted to the field of resource and environmental technology, and can be used in conjunction with different types of medicine preparation equipment, such as sewage dosing and pharmaceutical process equipment.

[0033] Specifically, the loss-in-weight method precision metering dosing machine mainly includes a drive device 10, a feed hopper body 20, a storage box 30, an agitator 40, a drug delivery screw 50, a drug delivery cartridge assembly 60, a weighing system 70, and an electronic control box 80. Among them, the storage box 30, the feed hopper body 20, and the drug delivery cartridge assembly 60 are connected in sequence. Materials, such as medicines, can be placed in the storage box 30 and then output and put into supporting equipment such as sewage treatment equipment and drug mixing equipment through the feed hopper body 20 and the drug delivery cartridge assembly 60 in sequence. The agitator 40 is arranged in the feed hopper body 20. The agitator 40 is used to stir the materials in the feed hopper body 20 to prevent the materials from adhering to and clogging in the feed hopper body 20. The drug delivery screw 50 is arranged in the drug delivery cartridge assembly 60. The drug delivery screw 50 is used to transport materials. The drive device 10 is connected to the agitator 40 and the drug delivery screw 50, respectively, and is used to drive the agitator 40 and the drug delivery screw 50 to rotate. The drive device 10, the feed hopper body 20, the storage box 30, the agitator 40, the drug delivery screw 50, and the drug delivery cartridge assembly 60 are all mounted on a weighing system 70. The weighing system 70 is capable of measuring the weight of the drive device 10, the feed hopper body 20, the storage box 30, the agitator 40, the drug delivery screw 50, the drug delivery cartridge assembly 60, and the material within the dosing machine, thereby obtaining the weight loss of the material over a certain period of time and more accurately controlling the material output. The electrical control box 80 is provided separately from the weighing system 70 and can be placed in a location convenient for manual operation according to actual needs. The electrical control box 80 is electrically connected to the weighing system 70 and the drive device 10, respectively, and is used to receive weight signals sent by the weighing system 70 and start and stop the starting device 10 based on the received weight signal and a preset target weight. This embodiment can adjust the delivery volume by measuring the weight loss of the silo in real time, comparing it with the delivery requirements in real time, and adjusting the screw speed in time, so that the dosing machine can accurately deliver the medicine according to the set value.

[0034] In some examples, the drive device 10 includes a motor 11, a reduction gearbox 12, a screw drive shaft 13, and an agitator shaft 14. The motor 11 is connected to the input of the reduction gearbox 12, which has multiple outputs, with the screw drive shaft 13 and the agitator shaft 14 connected to different outputs. The drive device 10 is structurally stable and easy to disassemble and assemble. The motor 11's variable speed drive, coupled through the reduction gearbox 12, simultaneously drives the screw drive shaft 13 and the agitator shaft 14, simplifying the structure and control methods for agitation and screw conveying.

[0035] In some examples, the servo motor 11 is an AC servo motor. The servo motor has the advantages of low cost and a wide speed range, so that the dosing machine can deliver a wide range of drug amounts per unit time.

[0036] In some examples, the drug delivery screw 50 is a twin screw, which has a higher delivery efficiency. There are two screw drive shafts 13 arranged in parallel, and the two screw drive shafts 13 are driven to rotate by the same motor 11.

[0037] In some examples, the reduction gearbox 12 is configured such that the rotational speed of the agitator shaft 14 is lower than the rotational speed of the screw drive shaft 13, thereby meeting the different speed requirements for agitation and screw delivery. For example, the reduction gearbox 12 may include a gear set including a driving gear connected to the rotating shaft of the motor 11, a first driven gear connected to the agitator shaft 14, and a second driven gear connected to the medication delivery screw 50, with the diameter of the first driven gear being larger than the diameter of the second driven gear.

[0038] In some examples, the stirring shaft 14 is disposed above the screw drive shaft 13 and cooperates with the structure in which the feed hopper body 20 is disposed above the drug delivery barrel assembly 60 to facilitate the material to enter the drug delivery barrel assembly 60 from the feed hopper body 20 under the action of gravity.

[0039] In some examples, the screw drive shaft 13 and the drug delivery screw 50 are fixed with a built-in bayonet, which is not easy to loosen or fall off. For example, the drug delivery screw 50 is provided with a bayonet, and the screw drive shaft 13 extends into the drug delivery screw 50 and cooperates with the drug delivery screw 50, which facilitates assembly and maintenance.

[0040] In some examples, the feed hopper body 20 includes a hemispherical body, the area of ​​which gradually decreases from top to bottom. The upper end of the feed hopper body 20 is connected to the storage box 30, and the lower end of the feed hopper body 20 is connected to the feeding end of the drug delivery screw 50, so that the material is easily collected at the output port of the feed hopper body 20. The agitator 40 includes at least two arc-shaped stirring blades 41. The stirring blades 41 rotate around the center of the hemispherical body, for example, around a horizontal axis. The ends of the stirring blades 41 are adjacent to or in contact with the inner wall of the feed hopper body 20. The material is stirred and turned in a close-fitting manner by the agitator 40 rotating around the center of the sphere, which is less likely to cause arch bridges or blockages. The stirring blades 41 scrape the material in the feed hopper body 20, especially the inner wall of the feed hopper body 20, and can achieve all-round stirring of the bottom and inner wall of the feed hopper body 2 without leaving any dead corners.

[0041] In some examples, the storage bin 30 includes a cylinder 31 and a conical cylinder 32 connected to the bottom end of the cylinder 31 to store the materials. The conical cylinder 32 has a certain inclination to facilitate the collection of materials. The inner walls of the cylinder 31 and the conical cylinder 32 are both smooth, so the materials are not easily adhered to the inner surfaces.

[0042] In some examples, the storage box 30 further includes a box cover 33 connected to the top of the cylinder 31 to prevent impurities from entering the storage box 30. The inside of the box cover 33 can be provided with a moisture-proof device, such as blended moisture-absorbing cotton, to keep the box dry and free of moisture.

[0043] In some examples, the cylinder 31 and the cone 32 are made of stainless steel, which has high strength and a smooth surface.

[0044] In some examples, the bottom end of the cone 32 is locked and connected to the feed hopper body 20 by a clamp 34, and the connection between the two is firmly sealed. A sealing ring, such as a natural rubber sealing ring, is provided between the bottom end of the cone 32 and the feed hopper body 20, making the two easy to assemble and disassemble, simple to maintain, and low in maintenance cost.

[0045] In some examples, the drug delivery screw 50 is made of stainless steel 304, which has the advantage of corrosion resistance. The drug delivery screw 50 includes a solid surface spiral blade 41. The drug delivery screw 50 has a smooth surface and a tooth shape that is not easy to hide the drug, further reducing obstruction.

[0046] In some examples, the drug delivery screw 50 is a twin screw, and the spiral blades 51 of the twin screws are meshed with each other to achieve self-cleaning, thereby preventing the delivered material from adhering to the spiral blades 51 and affecting delivery.

[0047] In some examples, the drug delivery cartridge assembly 60 includes a screw chamber 61 that accommodates the drug delivery screw 50 and a drug delivery port 62 disposed at the delivery end of the screw chamber 61. The drug delivery port 62 includes a downward opening to facilitate the delivery of the material under the action of gravity. The drug delivery port 62 has an observation window 63 located at the top of the drug delivery port 62 for easy observation of the drug delivery status.

[0048] In some examples, a sealing ring, such as a rubber sealing ring, is provided between the feed end of the screw chamber 61 and the feed hopper body 20 and is connected by a clamping bolt 64 , which has good sealing performance and is easy to disassemble and assemble.

[0049] In some examples, the feed hopper body 20 and the driving device 1 are also installed using clamping bolts, which are easy to assemble and disassemble and easy to clean.

[0050] In some examples, the weighing system 70 includes a weighing sensor 71 . For example, the weighing sensor 71 can convert the net weight and gross weight of the dosing machine component with the material placed thereon into signals and transmit them to the electrical control box 8 .

[0051] In some examples, the electric control box 80 includes a PLC 81, a servo motor driver 82 and an input receiver 83, wherein the input receiver 83 is electrically connected to the PLC 81, and the PLC 81 is electrically connected to the weighing sensor 71 and the servo motor driver 82 respectively, and the servo motor driver 82 is electrically connected to the drive device 10. The PLC 81 and the servo motor driver 82 can also be electrically connected to a power supply respectively. The input receiver 83 can be a button, a touch screen, etc., and the input receiver 83 can also be provided with a display for displaying the device operation data in real time. The PLC 81 is used to receive the parameters input by the user and the weight signal obtained from the weighing sensor 71, compare the weight loss weight and the target dosage weight in real time, and control the servo motor driver 82 accordingly, so as to achieve accurate dosage.

[0052] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A weight-loss method accurate metering dosing machine, characterized in that It includes a driving device, a feeding hopper body, a storage box, an agitator, a drug delivery screw, a drug delivery cartridge assembly, a weighing system and an electric control box. The storage box, the feeding hopper body and the drug delivery cartridge assembly are connected in sequence. The agitator is arranged in the feeding hopper body, and the drug delivery screw is arranged in the drug delivery cartridge assembly. The driving device is respectively connected to the agitator and the drug delivery screw. The driving device, the feeding hopper body, the storage box, the agitator, the drug delivery screw and the drug delivery cartridge assembly are all arranged on the weighing system. The electric control box is separately arranged from the weighing system, and the electric control box is respectively electrically connected to the weighing system and the driving device.

2. A weight-loss accurate metering dosing machine according to claim 1, characterized in that The driving device includes a motor, a reduction gearbox, a screw transmission shaft and a stirring shaft. The motor is connected to the input end of the reduction gearbox. The reduction gearbox has multiple output ends. The screw transmission shaft and the stirring shaft are respectively connected to different output ends.

3. A weight-loss accurate metering dosing machine according to claim 2, characterized in that The motor is an AC servo motor; The medicine delivery screw is a twin screw, and the number of screw transmission shafts is two and they are arranged in parallel; The reduction gearbox is configured so that the rotational speed of the stirring shaft is less than the rotational speed of the screw transmission shaft; The stirring shaft is arranged above the screw transmission shaft; The screw transmission shaft and the medicine delivery screw are fixed by using a built-in bayonet.

4. A weight-loss accurate dosing machine according to any one of claims 1 to 3, characterized in that The feed hopper body includes a hemispherical hopper body, the area of ​​the hemispherical hopper body gradually decreases from top to bottom, the upper end of the feed hopper body is connected to the storage box, and the lower end of the feed hopper body is connected to the feeding end of the medicine delivery screw; The stirrer comprises at least two arc-shaped stirring blades, which rotate around the center of the hemispherical bucket body, and the ends of the stirring blades are adjacent to or in contact with the inner wall of the feed bucket body.

5. A weight-loss accurate dosing machine according to any one of claims 1 to 3, characterized in that The material storage box includes a cylinder, a cone connected to the bottom end of the cylinder, and a box cover connected to the top end of the cylinder; The inner wall of the cylinder and the inner wall of the cone are both smooth walls.

6. A weight-loss accurate metering dosing machine according to claim 5, characterized in that The cylinder and the cone are made of stainless steel; The bottom end of the cone is tightly connected to the feed hopper body by a clamp, and a sealing ring is provided between the bottom end of the cone and the feed hopper body; A moisture-proof device is provided on the inner side of the box cover.

7. A weight-loss accurate dosing machine according to any one of claims 1 to 3, characterized in that The medicine delivery screw is made of stainless steel 304, includes solid surface spiral blades, and has a smooth surface.

8. A weight-loss accurate dosing machine according to any one of claims 1 to 3, characterized in that The medicine delivery screw is a twin screw, and the spiral blades of the twin screw are meshed with each other.

9. A weight-loss accurate dosing machine according to any one of claims 1 to 3, characterized in that The drug delivery barrel assembly includes a screw chamber for accommodating the drug delivery screw and a drug delivery port provided at a discharge end of the screw chamber, wherein the drug delivery port includes a downward opening and an observation window located at the top of the drug delivery port; A sealing ring is provided between the feed end of the screw cavity and the feed hopper body and the two are connected by clamping bolts.

10. A weight-loss accurate dosing machine according to any one of claims 1 to 3, characterized in that The weighing system includes a weighing sensor; The electric control box includes a PLC, a servo motor driver and an input receiver, the input receiver is electrically connected to the PLC, the PLC is electrically connected to the weighing sensor and the servo motor driver respectively, and the servo motor driver is electrically connected to the driving device.

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