Polyaluminum chloride dosing device and dispensing device thereof

Abstract

The utility model belongs to the technical field of purified water treatment, and particularly discloses a polyaluminum chloride dosing device and a dispensing device thereof, which comprise a medicine dissolving box, the polyaluminum chloride dosing device is erected on the medicine dissolving box, a screw conveyer is arranged on the lower side of a discharge port, and the discharge port of the screw conveyer is butted with a feed port of the medicine dissolving box. A stirrer for stirring a solution in the medicine dissolving box is mounted on the medicine dissolving box; the polyaluminum chloride dosing device comprises a conical hopper, a driving motor, a speed reducer and a transmission shaft; the radial outer side of the transmission shaft is provided with an upper-layer scraping plate through an upper connecting rod and connected with a lower-layer scraping plate through a lower connecting rod; the upper-layer scraping plate and the lower-layer scraping plate are arranged at intervals up and down, are triangular or trapezoidal, and can be used for carrying out double-layer stirring on PAC materials, so that the flowability is improved; under the dual action of medicament gravity and stirring of the electric scraping plate, the PAC material can be prevented from being bonded, the phenomenon that the material position is empty and does not discharge is avoided, and the normal concentration of a dispensing solution is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of purified water treatment, and specifically relates to a polyaluminium chloride dosing device and a dispensing device thereof. Background Art

[0002] Most of the current polyaluminium chloride (PAC) dissolving devices for water treatment use manual dispensing in dissolving tanks, and some use automatic dispensing devices. Manual dispensing generally uses a semi-underground dissolving tank, with a mixer, a dosing port, a liquid level gauge and a water supply device set up on the top. The operator controls the water supply and the amount of dosing according to the cross-sectional area and the liquid level of the dissolving tank, thereby ensuring a constant dispensing concentration. However, the manual dispensing of bagged agents through the dosing port is labor-intensive and easily brings in impurities to block the inlet pipe of the dosing pump. At the same time, there is a lot of dust and dirt in the on-site environment, which is not conducive to the occupational health of employees and the management of 6S on site. In addition, the liquid level is affected by the stirring of the mixer, resulting in errors in the dispensing concentration. Due to the viscosity of PAC itself and the viscosity caused by moisture, the material fluidity inside the storage tank is poor, and it is easy to form a hollow at the discharge port, which causes the conveyor to be unable to feed normally, the dispensing concentration is reduced, and the dosing amount is reduced, thereby affecting the coagulation reaction effect of the reactor. Utility Model Content

[0003] In view of the problems in the prior art that polyaluminium chloride preparation is labor-intensive, impurities are easily introduced to block the inlet pipe of the dosing pump, and PAC is easily adhered to cause empty holes and affect the feeding, a polyaluminium chloride dosing device and its dispensing device are proposed. The utility model provides the following technical solutions:

[0004] A polyaluminium chloride dosing device comprises a conical hopper, wherein a driving motor is installed on the upper side of the conical hopper, a discharging port is arranged on the lower side of the conical hopper, and a feeding port is arranged on the outer side of the driving motor; a reducer is connected to the output end of the driving motor, and a transmission shaft is downwardly connected to the output end of the reducer; an upper scraper is installed on the radial outer side of the transmission shaft through an upper connecting rod, and a lower scraper is connected to the lower scraper through a lower connecting rod; the upper scraper and the lower scraper are both spaced apart from the inner side wall of the conical hopper; the upper scraper and the lower scraper are spaced apart from each other, are triangular or trapezoidal, and are wide at the top and narrow at the bottom.

[0005] Preferably, the upper scraper and the lower scraper are both in the shape of a right triangle, with the upper side perpendicular to the transmission shaft, the inner side parallel to the transmission shaft, and the outer side inclined.

[0006] Preferably, the slope of the outer sides of the right-angled triangles of the upper scraper and the lower scraper is smaller than the slope of the side wall of the conical hopper.

[0007] Preferably, the lower scraper is smaller than the upper scraper, and the distance between the lower scraper and the transmission shaft is smaller than the distance between the upper scraper and the transmission shaft.

[0008] Preferably, the upper connecting rod and the lower connecting rod are both perpendicular to the transmission shaft.

[0009] Preferably, the upper connecting rod and the lower connecting rod are symmetrically arranged about the transmission shaft, and the two ends of the upper connecting rod of the transmission shaft are respectively connected to an upper scraper, and the two ends of the lower connecting rod are respectively connected to a lower scraper.

[0010] Preferably, the conical hopper is covered with a cover plate, which is arranged on the upper side of the feeding port, the driving motor and the reducer.

[0011] A polyaluminium chloride dispensing device comprises a dissolving box, a polyaluminium chloride dosing device is mounted on the dissolving box, a screw conveyor is arranged at the lower side of the discharging port, the discharging port of the screw conveyor is connected with the feeding port of the dissolving box, and a stirrer for stirring the solution in the dissolving box is installed on the dissolving box.

[0012] Preferably, the mixer comprises a front-stage mixer and a rear-stage mixer, the front-stage mixer and the feed inlet of the drug-dissolving box are arranged on the same side of the drug-dissolving box, and the rear-stage mixer is arranged on the other side.

[0013] Preferably, a partition is fixedly connected to the middle of the drug dissolving box.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The PAC material can be stirred in two layers by the upper scraper and the lower scraper to improve fluidity;

[0016] 2. With the conical hopper, the material can slide down automatically under the action of gravity to prevent sticking;

[0017] 3. The upper scraper and the lower scraper are spaced apart from each other, both are triangular or trapezoidal, and both are wide at the top and narrow at the bottom. The closer to the feeding port, the stronger the stirring intensity, and the farther away from the feeding port, the finer the stirring, which effectively prevents the PAC material from sticking and avoids the material from being empty without feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a top view structural diagram of the conical hopper and the upper scraper;

[0020] In the attached figure, 1, cover plate; 2, reducer; 3, drive motor; 4, transmission shaft; 5, upper scraper; 6, PAC material; 7, conical hopper; 8, lower scraper; 9, screw conveyor; 10, rear mixer; 11, partition; 12, finished solution; 13, dissolving box; 14, front mixer; 15, feeding port; 16, upper connecting rod; 17, lower connecting rod;

[0021] a. The angle between the outer side of the upper scraper and the side wall of the conical hopper;

[0022] m, the horizontal distance between the upper end of the upper scraper side and the side wall of the conical hopper;

[0023] n. The horizontal distance between the lower end of the upper scraper side and the side wall of the conical hopper. DETAILED DESCRIPTION

[0024] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0025] like Figure 1 and Figure 2 As shown, a polyaluminium chloride dosing device comprises a conical hopper 7, a driving motor 3 is installed on the upper side of the conical hopper 7, a discharge port is arranged on the lower side of the conical hopper 7, and a feeding port 15 is arranged on the outer side of the driving motor 3 of the conical hopper 7; the output end of the driving motor 3 is connected to a reducer 2, and the output end of the reducer 2 is downwardly connected to a transmission shaft 4; an upper scraper 5 is installed on the radial outer side of the transmission shaft 4 through an upper connecting rod 16, and is connected to a lower scraper 8 through a lower connecting rod 17; the upper scraper 5 and the lower scraper 8 are both spaced apart from the inner side wall of the conical hopper 7; the upper scraper 5 and the lower scraper 8 are spaced apart from each other ... The plates 8 are arranged at intervals up and down, and are all triangular or trapezoidal, and are all set to be wide at the top and narrow at the bottom; the PAC material 6 can be stirred in a double layer to improve the fluidity of the PAC material 6; and the conical hopper 7 is adopted, the material can automatically slide down under the action of gravity, and the upper scraper 5 and the lower scraper 8 are set to be wide at the top and narrow at the bottom. The closer to the feeding port 15, the stronger the stirring intensity (coarse stirring, which can quickly stir more PAC material 6), and the farther away from the feeding port 15, the finer the stirring; under the dual action of the gravity of the medicine and the stirring of the electric scraper, the PAC material 6 can be prevented from sticking, and the material can be prevented from being left empty without being discharged.

[0026] Specifically, the upper scraper 5 and the lower scraper 8 are both in the shape of a right triangle, and the upper side is perpendicular to the transmission shaft 4, the inner side is parallel to the transmission shaft 4, and the outer side is inclined; the slope of the outer side of the right triangle of the upper scraper 5 and the lower scraper 8 is smaller than the slope of the side wall of the conical hopper 7, that is, the horizontal distance m between the upper end of the side of the upper scraper 5 and the side wall of the conical hopper 7 is smaller than the horizontal distance n between the lower end of the side of the upper scraper 5 and the side wall of the conical hopper 7. Specifically, the angle a between the outer side of the upper scraper 5 and the side wall of the conical hopper 7 is 10-20 degrees.

[0027] Specifically, the diameter of the conical hopper 7 is larger at the top and smaller at the bottom, the lower scraper 8 is smaller than the upper scraper 5 , and the distance between the lower scraper 8 and the transmission shaft 4 is smaller than the distance between the upper scraper 5 and the transmission shaft 4 .

[0028] Specifically, the upper connecting rod 16 and the lower connecting rod 17 are both perpendicular to the transmission shaft 4; the upper connecting rod 16 and the lower connecting rod 17 are both symmetrically arranged about the transmission shaft 4, and the two ends of the upper connecting rod 16 of the transmission shaft 4 are respectively connected to an upper scraper 5, and the two ends of the lower connecting rod 17 are respectively connected to a lower scraper 8, and a large gap is left between the two upper scrapers 5 and between the two lower scrapers 8 to reduce the load on the drive motor 3.

[0029] Furthermore, the conical hopper 7 is covered with a cover plate 1, which is arranged on the upper side of the feeding port 15, the driving motor 3 and the reducer 2 for dust prevention, thereby improving the purity of the finished solution 12.

[0030] A polyaluminium chloride dispensing device comprises a dissolving medicine box 13, on which a polyaluminium chloride dosing device is mounted, a screw conveyor 9 is arranged at the lower side of a discharge port, the discharge port of the screw conveyor 9 is connected to a feed port of the dissolving medicine box 13, and a stirrer for stirring the solution in the dissolving medicine box 13 is installed on the dissolving medicine box 13, so as to ensure normal feeding and normal dispensing concentration (not too low), reduce the addition of PAC material 6 (compared to when the PAC material 6 is blocked), and prevent the coagulation reaction effect of the reactor from being affected.

[0031] Specifically, the mixer includes a front-stage mixer 14 and a rear-stage mixer 10. A partition 11 is fixedly connected to the middle of the solvent box 13. The lower end of the partition 11 is spaced apart from the bottom wall of the solvent box 13. The feed inlets of the front-stage mixer 14 and the solvent box 13 are arranged on the left side of the solvent box 13, and the rear-stage mixer 10 is arranged on the right side. Double-stage mixing can be performed, and a finished solution 12 can be generated on the right side of the solvent box 13.

Claims

1. A polyaluminium chloride dosing device, characterized in that: The invention comprises a conical hopper (7), wherein a driving motor (3) is installed on the upper side of the conical hopper (7), a discharge port is arranged on the lower side of the conical hopper (7), and a feeding port (15) is arranged on the outer side of the driving motor (3); the output end of the driving motor (3) is connected to a reducer (2), and the output end of the reducer (2) is downwardly connected to a transmission shaft (4); an upper scraper (5) is installed on the radial outer side of the transmission shaft (4) through an upper connecting rod (16), and is connected to a lower scraper (8) through a lower connecting rod (17); the upper scraper (5) and the lower scraper (8) are both spaced apart from the inner side wall of the conical hopper (7); the upper scraper (5) and the lower scraper (8) are spaced apart from each other in the upper and lower parts, and are both triangular or trapezoidal, and are both wide at the top and narrow at the bottom.

2. The polyaluminium chloride dosing device according to claim 1, characterized in that: The upper scraper (5) and the lower scraper (8) are both in the shape of a right triangle, with the upper side being perpendicular to the transmission shaft (4), the inner side being parallel to the transmission shaft (4), and the outer side being inclined.

3. The polyaluminium chloride dosing device according to claim 2, characterized in that: The slope of the outer sides of the right-angled triangle of the upper scraper (5) and the lower scraper (8) is smaller than the slope of the side wall of the conical hopper (7).

4. The polyaluminium chloride dosing device according to claim 1, characterized in that: The lower scraper (8) is arranged smaller than the upper scraper (5), and the distance between the lower scraper (8) and the transmission shaft (4) is smaller than the distance between the upper scraper (5) and the transmission shaft (4).

5. The polyaluminium chloride dosing device according to claim 1, characterized in that: The upper connecting rod (16) and the lower connecting rod (17) are both perpendicular to the transmission shaft (4).

6. The polyaluminium chloride dosing device according to claim 5, characterized in that: The upper connecting rod (16) and the lower connecting rod (17) are both symmetrically arranged about the transmission shaft (4); the two ends of the upper connecting rod (16) of the transmission shaft (4) are respectively connected to an upper scraper (5), and the two ends of the lower connecting rod (17) are respectively connected to a lower scraper (8).

7. The polyaluminium chloride dosing device according to claim 1, characterized in that: The conical hopper (7) is covered with a cover plate (1), which is arranged on the upper side of the feeding port (15), the driving motor (3) and the reducer (2).

8. A polyaluminium chloride dispensing device, characterized in that: It comprises a dissolving medicine box (13), on which is mounted a polyaluminium chloride dosing device as claimed in any one of claims 1 to 7, a screw conveyor (9) is arranged at the lower side of the discharge port, the discharge port of the screw conveyor (9) is connected to the feed port of the dissolving medicine box (13), and a stirrer for stirring the solution in the dissolving medicine box (13) is installed.

9. The polyaluminium chloride dispensing device according to claim 8, characterized in that: The mixer comprises a front-stage mixer (14) and a rear-stage mixer (10), wherein the feed inlet of the front-stage mixer (14) and the drug dissolving box (13) are arranged on the same side of the drug dissolving box (13), and the rear-stage mixer (10) is arranged on the other side.

10. The polyaluminium chloride dispensing device according to claim 9, characterized in that: A partition plate (11) is fixedly connected to the middle of the drug dissolving box (13).

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