A precise dosing device

Abstract

This utility model discloses a precise dosing and metering device, relating to the technical field of dosing and metering devices. It includes a body and stirring rods. A top cover is bolted to the top of the body. A metering pump is installed on one side of the top of the top cover, and a delivery pump is installed at the bottom of the body. A stirring shaft is movably connected to the inside of the top cover via bearings. A drive mechanism is located at the top of the stirring shaft, and multiple sets of stirring rods are fixedly connected to the outside of the stirring shaft. A transmission mechanism is located inside the stirring shaft. This precise dosing and metering device allows a rotatable threaded rod to drive the transmission mechanism, thereby pushing multiple sets of scrapers a and b out. These scrapers contact the inner wall and bottom of the body through scraper heads on one side, thus cleaning the inside of the body when the stirring shaft rotates. Sealing blocks in the fixed rods b and a can seal the two sets of fixed rods, thus protecting the sealing blocks.

Description

Technical Field

[0001] This utility model relates to the field of drug dosing and metering devices, specifically a precise drug dosing and metering device. Background Technology

[0002] Water treatment methods include physical treatment and chemical treatment. Physical methods include using filter media with different pore sizes to remove impurities from the water through adsorption or barrier. Among adsorption methods, activated carbon is a more important one. Chemical treatment methods involve adding chemicals to the wastewater, which react with the wastewater to treat it. Dosing devices are commonly used equipment in water treatment.

[0003] For example, CN212942376U discloses a dosing metering device. A metering component is movably installed on the top of the medicine tank. A cover plate can be installed on top of the medicine tank using fastening bolts, making disassembly and assembly simple, facilitating cleaning by staff, and preventing water pollution. A diaphragm metering pump is then connected to an external pipeline for quantitative dosing. A mixing component is installed throughout the medicine tank. A motor drives a shaft to rotate, which in turn drives a mixing paddle to mix the medicine and water, improving water treatment quality. After treatment, an external pipeline is movably connected to a branch pipe. A control valve is then opened to guide the treated water into the pipe body, and multiple branch pipes are used to drain the water for use.

[0004] In the above-mentioned solution, when the dosing device mixes the agent and water, it is necessary to activate the stirring rod to stir the water inside so that it can be mixed with the agent. When it is necessary to clean the inside of the dosing device, the bolts on the top of the device need to be removed, and then the top cover needs to be separated from the device. Then, the inside of the dosing device needs to be cleaned with cleaning tools. This method of cleaning the dosing device is relatively complicated and the stirring rod has a relatively single function. Utility Model Content

[0005] The purpose of this invention is to provide a precise dosing device to solve the problem mentioned in the background art that existing dosing devices are not convenient for cleaning their inner walls.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precise dosing and metering device, comprising a body and a stirring rod. A top cover is bolted to the top of the body, a metering pump is installed on one side of the top of the top cover, and a delivery pump is installed at the bottom of the body. A stirring shaft is movably connected to the inside of the top cover via bearings. A drive mechanism is provided at the top of the stirring shaft, and multiple sets of stirring rods are fixedly connected to the outside of the stirring shaft. A transmission mechanism is provided inside the stirring shaft. A fixed rod a is fixedly connected to one end of each stirring rod, and a fixed rod b is fixedly connected to the bottom of the stirring shaft. A scraper a is slidably connected inside the fixed rod a, and a scraper b is slidably connected inside the fixed rod b. Scraper heads are fixedly connected to one side of both scraper a and scraper b, and the scraper heads are made of silicone. Four sets of scraper heads are provided, with two sets slidably connected inside the fixed rod a and the other two sets slidably connected inside the fixed rod b. A closing mechanism is provided on one side of the fixed rod b.

[0007] Furthermore, the drive mechanism includes a motor mounted on the top of the top cover, a drive gear fixed to the output end of the motor, a driven gear meshing with the outer side of the drive gear, and the inner side of the driven gear fixed to the stirring shaft.

[0008] Furthermore, the transmission mechanism includes a threaded rod internally threaded to the stirring shaft, and a rectangular rod rotatably connected to the bottom of the threaded rod via a rotating shaft. The outer side of the rectangular rod is slidably connected to the stirring shaft.

[0009] Furthermore, a connecting rod is rotatably connected to the outer side of the rectangular rod via a pivot, and a push rod a is rotatably connected to one end of the connecting rod via a pivot. One end of the push rod a is fixed to the scraper a, and the outer side of the push rod a is slidably connected to the stirring rod.

[0010] Furthermore, a push rod b is fixedly connected to the bottom of the rectangular rod, the bottom of the push rod b is fixed to the scraper b, and the outer side of the push rod b is slidably connected to the stirring shaft.

[0011] Furthermore, the sealing mechanism includes a limiting block fixedly connected to one side of the sealing block. The limiting block is made of rubber. The outer side of the limiting block is slidably connected to the fixing rod a. A spring is abutted on one side of the limiting block. One end of the spring abuts against the inner side of the fixing rod a and the fixing rod b.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the precise dosing and metering device can rotate the threaded rod to drive the transmission mechanism to move, thereby pushing multiple sets of scrapers a and b out, and through the scraper head on one side to contact the inner wall and bottom of the machine body, thereby cleaning the inside of the machine body when the stirring shaft rotates. The sealing blocks in the fixed rod b and fixed rod a can seal the two sets of fixed rods, thereby protecting the sealing blocks.

[0013] 1. This precise dosing and metering device has a drive mechanism that can rotate the stirring shaft to mix the water and chemicals in the machine body. When it is necessary to clean the inner wall of the machine body, the forward-rotating threaded rod drives multiple sets of connecting rods to rotate, thereby pushing the push rod a at one end to move and push out the scraper a and scraper head inside the fixed rod a. When the rectangular rod moves down, it will also drive the push rod b at the bottom to push the scraper b out. At this time, the stirring shaft can clean the inside of the machine body through multiple sets of scrapers b while rotating. In this way, the inner wall and bottom of the dosing and metering device can be cleaned easily through the above operation.

[0014] 2. In this precise dosing and metering device, when the threaded rod is reversed, scraper a and scraper b will move back into fixed rod a and fixed rod b. At this time, multiple sets of springs will push the two sets of sealing blocks closer to each other and finally abut against each other, thereby completing the sealing of fixed rod a and fixed rod b, reducing the contact between the scraper head and the external agent. In this way, the scraper head can be easily sealed in fixed rod a through the above operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a three-dimensional cross-sectional structural diagram of the stirring shaft of this utility model;

[0018] Figure 4 This is a three-dimensional cross-sectional view of the fixing rod b of this utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the stirring rod of this utility model;

[0020] Figure 6 This utility model Figure 5 Enlarged diagram of point A.

[0021] In the diagram: 1. Machine body; 2. Top cover; 3. Metering pump; 4. Delivery pump; 5. Motor; 6. Drive gear; 7. Driven gear; 8. Stirring shaft; 9. Stirring rod; 10. Threaded rod; 11. Rectangular rod; 12. Connecting rod; 13. Push rod a; 14. Fixed rod a; 15. Push rod b; 16. Fixed rod b; 17. Scraper a; 18. Scraper head; 19. Sealing block; 20. Limiting block; 21. Spring; 22. Scraper b. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figures 1-6 This utility model provides the following technical solution: A precise dosing and metering device, comprising a body 1 and a stirring rod 9. A top cover 2 is fixedly connected to the top of the body 1 by bolts. A metering pump 3 is installed on one side of the top of the top cover 2, and a delivery pump 4 is installed at the bottom of the body 1. A stirring shaft 8 is movably connected to the inside of the top cover 2 via bearings. A drive mechanism is provided at the top of the stirring shaft 8. Multiple sets of stirring rods 9 are fixedly connected to the outside of the stirring shaft 8. A transmission mechanism is provided inside the stirring shaft 8. A fixing rod a14 is fixedly connected to one end of the stirring rod 9, and a fixing rod b16 is fixedly connected to the bottom of the stirring shaft 8. A scraper a17 is slidably connected inside the fixing rod a14, and a scraper b22 is slidably connected inside the fixing rod b16. A scraper head 18 is fixedly connected to one side of both the scraper a17 and the scraper b22, and the scraper head 18 is made of silicone material. The drive mechanism includes a motor 5 installed on the top of the top cover 2, and the output end of the motor 5 is fixed... The transmission mechanism includes a drive gear 6, with a driven gear 7 meshing on its outer side. The inner side of the driven gear 7 is fixed to the stirring shaft 8, forming a meshing transmission structure. The transmission mechanism includes a threaded rod 10 internally threaded to the stirring shaft 8. A rectangular rod 11 is rotatably connected to the bottom of the threaded rod 10 via a rotating shaft. The outer side of the rectangular rod 11 is slidably connected to the stirring shaft 8. A connecting rod 12 is rotatably connected to the outer side of the rectangular rod 11 via a rotating shaft. One end of the connecting rod 12 is rotatably connected to a push rod a13 via a rotating shaft. One end of the push rod a13 is fixed to a scraper a17, and the outer side of the push rod a13 is slidably connected to the stirring rod 9, forming a sliding structure. A push rod b15 is fixedly connected to the bottom of the rectangular rod 11. The bottom of the push rod b15 is fixed to a scraper b22, and the outer side of the push rod b15 is slidably connected to the stirring shaft 8, forming a sliding structure.

[0024] Please see Figures 1-6This precise dosing device allows for the addition of chemicals. First, the chemicals are added to a metering pump 3, which precisely delivers them into the machine body 1. After addition, the motor 5 is activated, driving the drive gear 6 to rotate. This drives the drive gear 6 to mesh with the driven gear 7, which in turn rotates the stirring shaft 8 fixed inside the driven gear 7. The rotation of the stirring shaft 8 drives multiple stirring rods 9 to mix the water and chemicals in the machine body 1. When cleaning the inner wall of the machine body 1 is required, a forward-rotating threaded rod 10 engages with the stirring shaft 8, causing the threaded rod 10 to move downwards. The threaded rod 10 pushes the rectangular rod 11 at the bottom downwards, thereby rotating the outer connecting rod 12. The push rod a13 at one end will be moved, and the push rod a13 will push the scraper a17 and scraper head 18 inside the fixed rod a14 to move out and contact the inner wall of the machine body 1. When the rectangular rod 11 moves down, it will also drive the push rod b15 at the bottom to push the scraper b22 to move, so that the scraper b22 and scraper head 18 move to contact the bottom of the machine body 1. At this time, when the stirring shaft 8 rotates, it can contact the inner wall and bottom of the machine body 1 through multiple sets of scrapers b22. The silicone scraper b22 will remove the adhering substances on the inner wall and bottom of the machine body 1, and will not make hard contact with the machine body 1, which can prevent scratching it. In this way, the inner wall and bottom of the dosing metering device can be easily cleaned.

[0025] Example 2:

[0026] Please see Figures 4-6 Based on Embodiment 1, the following specific structure is also disclosed: The sealing mechanism includes a limiting block 20 fixedly connected to one side of the sealing block 19. The limiting block 20 is made of rubber. The outer side of the limiting block 20 is slidably connected to the fixing rod a14. A spring 21 abuts against one side of the limiting block 20. One end of the spring 21 abuts against the inner side of the fixing rod a14 and the fixing rod b16.

[0027] Please see Figures 4-6 After cleaning the inside of the machine body 1, this precise dosing device reduces the contact between the scraper head 18 and the chemical agent by installing sealing blocks 19 inside the fixed rods a14 and b16. One side of the sealing block 19 is wedge-shaped. When the threaded rod 10 is reversed, the scraper a17 and scraper b22 will move back into the fixed rods a14 and b16. At this time, multiple sets of springs 21 will push the two sets of sealing blocks 19 closer to each other and finally abut against each other, thereby completing the sealing of the fixed rods a14 and b16, reducing the contact between the scraper head 18 and the external chemical agent, and preventing the chemical agent from damaging the scraper head 18. When the scraper a17 and scraper b22 need to be moved out, they will contact the wedge-shaped surfaces of the two sets of sealing blocks 19 through the wedge-shaped surfaces on one side, thereby pushing the two to move and separate, and squeezing the springs 21 on one side. In this way, the scraper head 18 can be easily sealed in the fixed rod a14.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precise dosing metering device, comprising a body (1) and a stirring rod (9), wherein a top cover (2) is fixedly connected to the top of the body (1) by bolts, a metering pump (3) is installed on one side of the top of the top cover (2), and a delivery pump (4) is installed at the bottom of the body (1). Its features are: The top cover (2) is movably connected to a stirring shaft (8) via a bearing. A driving mechanism is provided at the top of the stirring shaft (8). Multiple stirring rods (9) are fixedly connected to the outside of the stirring shaft (8). A transmission mechanism is provided inside the stirring shaft (8). A fixed rod a (14) is fixedly connected to one end of the stirring rod (9). A fixed rod b (16) is fixedly connected to the bottom of the stirring shaft (8). A scraper a (17) is slidably connected inside the fixed rod a (14). A scraper b (22) is slidably connected inside the fixed rod b (16). A scraper head (18) is fixedly connected to one side of both the scraper a (17) and the scraper b (22). The scraper head (18) is made of silicone. The scraper head (18) is provided in four sets, two of which are slidably connected inside the fixed rod a (14), and the other two are slidably connected inside the fixed rod b (16). A closing mechanism is provided on one side of the fixed rod b (16).

2. The precise dosing device according to claim 1, characterized in that: The drive mechanism includes a motor (5) mounted on the top of the top cover (2), a drive gear (6) fixed at the output end of the motor (5), a driven gear (7) meshing with the outer side of the drive gear (6), and the inner side of the driven gear (7) fixed to the stirring shaft (8).

3. The precise dosing and metering device according to claim 1, characterized in that: The transmission mechanism includes a threaded rod (10) internally threaded to the stirring shaft (8), and a rectangular rod (11) rotatably connected to the bottom of the threaded rod (10) via a rotating shaft. The outer side of the rectangular rod (11) is slidably connected to the stirring shaft (8).

4. The precise dosing device according to claim 3, characterized in that: The outer side of the rectangular rod (11) is rotatably connected to a connecting rod (12) via a rotating shaft. One end of the connecting rod (12) is rotatably connected to a push rod a (13) via a rotating shaft. One end of the push rod a (13) is fixed to a scraper a (17), and the outer side of the push rod a (13) is slidably connected to a stirring rod (9).

5. The precise dosing and metering device according to claim 3, characterized in that: The bottom of the rectangular rod (11) is fixedly connected to a push rod b (15), and the bottom of the push rod b (15) is fixed to the scraper b (22).

6. The precise dosing and metering device according to claim 1, characterized in that: The sealing mechanism includes a limiting block (20) fixedly connected to one side of the sealing block (19). The limiting block (20) is made of rubber. The outer side of the limiting block (20) is slidably connected to the fixing rod a (14). A spring (21) abuts against one side of the limiting block (20). One end of the spring (21) abuts against the inner side of the fixing rod a (14) and the fixing rod b (16).

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