Automatic dosing device for sewage treatment based on PLC (Programmable Logic Controller) control

Abstract

The utility model discloses an automatic dosing device for sewage treatment based on PLC (programmable logic controller) control, which relates to the field of sewage treatment and comprises a full-automatic dosing tank and a stock bin arranged at the top in the full-automatic dosing tank, a conical blanking hopper is mounted at the lower part of the stock bin, and a stop plate is movably inserted into the conical blanking hopper. The bottom of the full-automatic dosing box is rotationally connected with a centrifugal scattering disc, and a plc (programmable logic controller) is mounted outside the full-automatic dosing box. According to the sewage treatment automatic dosing device based on PLC control, a servo motor is controlled to be started through a plc controller, so that a material stopping plate is pulled out from the interior of a conical discharging hopper, a centrifugal motor is started, the centrifugal motor drives a centrifugal material scattering disc to rotate, the rotating speed of the centrifugal motor is changed through the plc controller, the material scattering distance can be adjusted, and therefore the material scattering range is changed; and therefore, a wider spreading coverage range can be realized, the use of a dosing machine is reduced, the efficiency is high, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an automatic dosing device for sewage treatment based on PLC control. Background Art

[0002] In the process of sewage treatment, in order to purify the water quality, sodium hypochlorite is usually added to the water for sterilization and disinfection. Sodium hypochlorite is mostly solid powder or granules, which are easier to transport and store. There is also a corresponding aqueous solution, which is more convenient to use, but the transportation and storage costs are high. Different types are selected in different usage scenarios.

[0003] Now, in order to improve efficiency and ensure the timing and quantity of dosing in many sewage treatment processes, automatic dosing boxes are used, and timed dosing is achieved through PLC control machines. However, in actual use, the range of dosing is small and constant. Therefore, it is usually necessary to set up multiple automatic dosing boxes around the sewage purification tank, which leads to higher corresponding equipment cost and use and maintenance cost. For this purpose, a sewage treatment automatic dosing device based on PLC control is provided to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides an automatic dosing device for sewage treatment based on PLC control, which solves the existing automatic dosing box and realizes timed feeding through a PLC control machine. However, in actual use, the feeding range is small and constant. Therefore, it is usually necessary to set up multiple automatic dosing boxes around the sewage purification tank, which leads to higher corresponding equipment cost and use and maintenance cost.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an automatic dosing device for sewage treatment based on PLC control, comprising a fully automatic dosing box and a silo arranged at the top of the fully automatic dosing box, a conical lower hopper is installed at the lower part of the silo, a stop plate is movably inserted inside the conical lower hopper, a centrifugal spreading disc is rotatably connected to the bottom of the fully automatic dosing box, the bottom end of the conical lower hopper is movably inserted inside the centrifugal spreading disc, a PLC control machine is installed outside the fully automatic dosing box, and the PLC control machine is used to control the opening and closing of the stop plate and the rotation of the centrifugal spreading disc.

[0008] Preferably, an equipment carrier plate is installed at the inner bottom of the fully automatic medicine adding box, a centrifugal motor is installed at the top of the equipment carrier plate, and a transmission chain is installed between the centrifugal motor and the centrifugal spreading plate.

[0009] Preferably, a servo motor is installed at the bottom of the equipment carrier plate, a driving gear is installed at the output end of the servo motor, a transmission rack is installed on the side of the stop plate, and the transmission rack is meshed with the driving gear.

[0010] Preferably, an annular guide rail is fixedly welded to the bottom of the fully automatic medicine adding box, a suspension arm is welded to the top wall of the centrifugal spreading plate, and the suspension arm is slidably connected to the outer surface of the annular guide rail.

[0011] Preferably, a material discharge chute is provided inside the centrifugal spreading disc, and a plurality of the material discharge chute is arranged in a circular array.

[0012] Preferably, an inspection box door is installed on the side of the fully automatic medicine adding box, and a feed hopper is installed on the top of the back side of the fully automatic medicine adding box, and the feed hopper is connected to the inside of the silo.

[0013] Preferably, a suspension seat is provided on the top of the fully automatic medicine adding box, and linear slide rails are inserted on both sides of the interior of the suspension seat.

[0014] Preferably, a travel motor is installed on the outer wall of the suspension seat, a travel gear is installed on the output end of the travel motor, a fixed rack is arranged between the two groups of linear slide rails, and the travel gear is meshed with the fixed rack.

[0015] The utility model discloses an automatic dosing device for sewage treatment based on PLC control, which has the following beneficial effects: by suspending the full-automatic dosing box above the center of the sewage treatment pool, the feeding interval timing is set by the PLC control machine, and when the specified feeding time point is reached, the PLC control machine controls the servo motor to start, thereby driving the driving gear to rotate, so that the driving gear drives the transmission rack to move, so that the stop plate is pulled out from the inside of the conical hopper, and at this time the sodium hypochlorite inside the silo falls downward to the inside of the centrifugal spreading disk, and at this time the centrifugal motor is started by the PLC control machine, so that the centrifugal motor drives the centrifugal spreading disk to rotate, and at this time the material is spread outward from a plurality of feeding chutes to form a ring-shaped spreading area, and during the spreading process, the speed of the centrifugal motor is changed by the PLC control machine, so that the spreading distance can be adjusted, so that the spreading range can be changed, thereby achieving a wider spreading coverage range, reducing the use of dosing machines, and having high efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall front structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall back structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the inner wall structure of the fully automatic medicine adding box of the utility model;

[0020] Figure 4 This is a cross-sectional view of the bottom structure of the fully automatic medicine adding box of the utility model;

[0021] Figure 5 It is a schematic diagram of the outer surface structure of the annular guide rail of the utility model.

[0022] In the figure: 1. Fully automatic dosing box; 2. PLC control machine; 3. Centrifugal spreading plate; 4. Suspension seat; 5. Fixed rack; 6. Linear slide; 7. Travel motor; 8. Feed hopper; 9. Maintenance box door; 10. Silo; 11. Conical discharge hopper; 12. Equipment carrier plate; 13. Centrifugal motor; 14. Transmission chain; 15. Stop plate; 16. Transmission rack; 17. Servo motor; 18. Drive gear; 19. Annular guide rail; 20. Suspension arm; 21. Discharge slide; 22. Travel gear. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The embodiment of the present application solves the problem of existing automatic dosing boxes by providing an automatic dosing device for sewage treatment based on PLC control. The device realizes timed dosing through a PLC control machine. However, in actual use, the dosing range is small and constant. Therefore, it is usually necessary to set up multiple automatic dosing boxes around the sewage purification tank, which leads to higher corresponding equipment cost and use and maintenance cost.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] The utility model embodiment discloses a sewage treatment automatic dosing device based on PLC control.

[0027] According to the attached Figure 1-5As shown, it includes a full-automatic medicine adding box 1 and a silo 10 arranged at the top of the full-automatic medicine adding box 1, a conical lower hopper 11 is installed at the lower part of the silo 10, and a stop plate 15 is movably inserted inside the conical lower hopper 11, and a centrifugal spreading disc 3 is rotatably connected to the bottom of the full-automatic medicine adding box 1, and the bottom end of the conical lower hopper 11 is movably inserted inside the centrifugal spreading disc 3, and a plc control machine 2 is installed outside the full-automatic medicine adding box 1, and the plc control machine 2 is used to control the opening and closing of the stop plate 15 and the rotation of the centrifugal spreading disc 3. The plc control machine 2 is installed by bolts. When the full-automatic medicine adding box 1 is installed outdoors, the plc control machine 2 and the full-automatic medicine adding box 1 can be installed separately.

[0028] An equipment carrier plate 12 is installed at the inner bottom of the full-automatic drug adding box 1 , a centrifugal motor 13 is installed at the top of the equipment carrier plate 12 , and a transmission chain 14 is installed between the centrifugal motor 13 and the centrifugal spreading plate 3 .

[0029] A servo motor 17 is installed at the bottom of the equipment carrier plate 12 , a driving gear 18 is installed at the output end of the servo motor 17 , and a transmission rack 16 is installed on the side of the stop plate 15 , and the transmission rack 16 is meshed with the driving gear 18 .

[0030] An annular guide rail 19 is fixedly welded to the bottom of the full-automatic drug adding box 1 , and a suspension arm 20 is welded to the top wall of the centrifugal spreading plate 3 . The suspension arm 20 is slidably connected to the outer surface of the annular guide rail 19 .

[0031] A material discharge chute 21 is provided inside the centrifugal material spreading plate 3 , and a plurality of material discharge chute 21 are arranged in a ring array.

[0032] An inspection box door 9 is installed on the side of the full-automatic medicine adding box 1 , and a feed hopper 8 is installed on the top of the back side of the full-automatic medicine adding box 1 , and the feed hopper 8 is connected to the inside of the silo 10 .

[0033] A suspension seat 4 is provided on the top of the full-automatic medicine adding box 1, and linear slide rails 6 are inserted on both sides of the interior of the suspension seat 4. A travel motor 7 is installed on the outer wall of the suspension seat 4, and a travel gear 22 is installed on the output end of the travel motor 7. A fixed rack 5 is provided between the two sets of linear slide rails 6, and the travel gear 22 is meshed with the fixed rack 5. The full-automatic medicine adding box 1 is suspended above the sewage treatment tank through the linear slide rail 6, and the travel motor 7 is controlled to rotate through the PLC control machine 2, so that the full-automatic medicine adding box 1 moves to one end, and it is convenient to add materials through the feed hopper 8 at this time.

[0034] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0035] When the device is in use, the fully automatic dosing box 1 is suspended above the center of the sewage treatment pool, and the feeding interval timing is set by the PLC control machine 2. When the specified feeding time point is reached, the PLC control machine 2 controls the servo motor 17 to start, thereby driving the driving gear 18 to rotate, so that the driving gear 18 drives the transmission rack 16 to move, so that the stop plate 15 is pulled out from the inside of the conical hopper 11. At this time, the sodium hypochlorite in the silo 10 falls downward to the inside of the centrifugal spreading plate 3. At this time, the centrifugal motor 13 is started by the PLC control machine 2, so that the centrifugal motor 13 drives the centrifugal spreading plate 3 to rotate. At this time, the material is spread outward from multiple feeding chutes 21 to form a ring-shaped spreading area, and during the spreading process, the speed of the centrifugal motor 13 is changed by the PLC control machine 2 to adjust the spreading distance, so that the spreading range is changed, thereby achieving a wider spreading coverage range, reducing the use of dosing machines, high efficiency and low cost.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sewage treatment automatic dosing device based on PLC control, comprising a fully automatic dosing box (1) and a silo (10) arranged on the top of the fully automatic dosing box (1), characterized in that: A conical lower hopper (11) is installed at the lower part of the silo (10), and a stop plate (15) is movably inserted inside the conical lower hopper (11). The bottom of the fully automatic drug adding box (1) is rotatably connected to a centrifugal material spreading plate (3), and the bottom end of the conical lower hopper (11) is movably inserted inside the centrifugal material spreading plate (3). A PLC control machine (2) is installed outside the fully automatic drug adding box (1), and the PLC control machine (2) is used to control the opening and closing of the stop plate (15) and the rotation of the centrifugal material spreading plate (3).

2. The automatic dosing device for sewage treatment based on PLC control according to claim 1 is characterized in that: The inner bottom of the fully automatic drug adding box (1) is provided with a device carrier plate (12), the top of the device carrier plate (12) is provided with a centrifugal motor (13), and a transmission chain (14) is provided between the centrifugal motor (13) and the centrifugal spreading plate (3).

3. The automatic dosing device for sewage treatment based on PLC control according to claim 2 is characterized in that: A servo motor (17) is installed at the bottom of the equipment carrier plate (12), a driving gear (18) is installed at the output end of the servo motor (17), a transmission rack (16) is installed on the side of the stop plate (15), and the transmission rack (16) is meshed with the driving gear (18).

4. The automatic dosing device for sewage treatment based on PLC control according to claim 1 is characterized in that: An annular guide rail (19) is fixedly welded to the bottom of the fully automatic drug adding box (1), and a suspension arm (20) is welded to the top wall of the centrifugal spreading plate (3), and the suspension arm (20) is slidably connected to the outer surface of the annular guide rail (19).

5. The automatic dosing device for sewage treatment based on PLC control according to claim 4 is characterized in that: A material discharge chute (21) is provided inside the centrifugal material spreading plate (3), and a plurality of the material discharge chute (21) are arranged in a ring array.

6. The automatic dosing device for sewage treatment based on PLC control according to claim 1 is characterized in that: A maintenance box door (9) is installed on the side of the fully automatic medicine adding box (1), and a feed hopper (8) is installed on the top of the back of the fully automatic medicine adding box (1), and the feed hopper (8) is connected to the inside of the silo (10).

7. The automatic dosing device for sewage treatment based on PLC control according to claim 1 is characterized in that: A suspension seat (4) is arranged on the top of the fully automatic medicine adding box (1), and linear slide rails (6) are inserted into both sides of the interior of the suspension seat (4).

8. The automatic dosing device for sewage treatment based on PLC control according to claim 7 is characterized in that: A travel motor (7) is installed on the outer wall of the suspension seat (4), a travel gear (22) is installed on the output end of the travel motor (7), a fixed rack (5) is arranged between the two sets of linear slide rails (6), and the travel gear (22) is meshed with the fixed rack (5).

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