Dry-type feeding production line for powdered activated carbon

Abstract

The invention discloses a dry-type feeding production line for powdered activated carbon, which relates to the technical field of water source purification and comprises a storage powder storage bin and a mounting frame arranged on one side of the storage powder storage bin. And the adding mechanism is arranged on the storage powder storage bin, and the adding mechanism is used for adding activated carbon to realize water quality pretreatment of the raw water. Automatic continuous feeding is achieved by arranging the feeding mechanism, meanwhile, the observation window is additionally arranged at the humidifying tank, the process condition in the humidifying tank can be conveniently treated, activated carbon accumulated in the humidifying tank can be conveniently maintained and swept in the later period, and when equipment runs, related personnel can observe the running condition in the tank in real time, so that the working efficiency of the equipment is improved. Controlling the water level to a proper position in real time; meanwhile, the observation window can be opened, so that maintenance personnel can knock off and remove hardened activated carbon in the observation window under the condition that the machine is not stopped. And the stable operation of the equipment is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of water source purification, in particular to a powdered activated carbon dry-type dosing production line. Background Art

[0002] The Chinese patent with publication number CN205820928U discloses a dry dosing device for powdered activated carbon, which mainly includes a belt conveyor, an automatic unpacking machine, a vacuum feeder, a silo, a pre-impregnation box, a pressurized water pump, a pre-impregnation pipe and a water ejector. The bagged powdered activated carbon is unpacked by the automatic unpacking machine, and the unpacked powdered activated carbon is transported to the silo under the action of the vacuum feeding unit. The vacuum feeder is located at the upper part of the silo, and the lower part of the silo is equipped with an anti-cavitation vibrator and an automatic gate valve. The powdered activated carbon first enters the star feeder from the silo, then enters the spiral feeder and finally falls into the pre-impregnation box. In the pre-impregnation box, the powdered activated carbon and the pressurized water are strongly sheared, stirred and diffused. The pre-impregnated powdered activated carbon enters the water ejector and is forcibly mixed and diluted with the pressurized water, and then transported to the corresponding dosing point. This utility model overcomes the defects of the prior art such as low utilization rate, easy clogging, large floor space and high investment cost. However, the device has defects when in use. The powdered activated carbon in the pre-impregnation box becomes compacted. The existing device is not convenient for handling the compacted powdered activated carbon. As time goes by, the compaction will gradually expand, eventually causing the screw conveyor to be blocked and damaging the equipment. At the same time, if the process water level is too high, the process water will also flow into the pre-impregnation box, eventually leading to serious production accidents. Summary of the invention

[0003] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a powdered activated carbon dry-type dosing production line.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A powdered activated carbon dry-type dosing production line comprises a powder storage silo and a mounting frame arranged on one side of the powder storage silo.

[0006] The dosing mechanism is arranged on the storage powder storage silo, and is used for adding activated carbon to realize the pretreatment of raw water quality.

[0007] As a further solution of the present invention: the dosing mechanism includes a screw conveyor installed on the powder storage silo, the screw conveyor is installed with a humidifying tank, the humidifying tank is installed with a Venturi water ejector, and the humidifying tank is provided with an observation window.

[0008] As a further solution of the present invention: a water pipe is installed on the Venturi water ejector, and an additional pump is arranged on the water pipe.

[0009] As a further solution of the present invention: the outside of the humidification tank is connected to a lifting ring through a limiting mechanism, the outside of the humidification tank is fixedly connected to a fixed arm, the fixed arm is rotatably connected to a connecting column, the connecting column is fixedly connected to a ball, a spring is fixedly connected between the connecting column and the humidification tank, and the outside of the humidification tank is provided with a driving mechanism for driving the lifting ring to move.

[0010] As a further solution of the present invention: the limiting mechanism includes a vertical rod fixedly connected to the outside of the humidification tank, two vertical rods are provided, the outside of the vertical rod is slidably connected to a connecting seat, the connecting seat is fixedly connected to the lifting ring, and the bottom end of the vertical rod is fixedly connected to a connecting block.

[0011] As a further solution of the present invention: the driving mechanism includes a mounting plate fixedly connected to the outside of the humidification tank, a motor is fixedly connected to the mounting plate, a connector is fixedly connected to the motor, an elliptical annular groove is provided on the outer surface of the connector, a convex rod is provided in the annular groove, and the convex rod is fixedly connected to the lifting ring.

[0012] As a further solution of the present invention: a horizontal plate is fixedly connected inside the humidifying tank, a rotating plate is rotatably connected to the bottom of the horizontal plate, and a baffle is fixedly connected to the rotating plate.

[0013] As a further solution of the present invention: a funnel is fixedly connected to the interior of the humidifying tank, and the baffle is attached to the bottom of the funnel.

[0014] As a further solution of the present invention: the Venturi water ejector is respectively provided with a first valve and a second valve.

[0015] As a further solution of the present invention: a plurality of the fixing arms are provided, and the connecting block is fitted with the lifting ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) This application realizes automatic continuous dosing by setting up a dosing mechanism, and at the same time, an observation window is added at the humidification tank, which is convenient for handling the process conditions in the humidification tank and for cleaning the activated carbon accumulated in the humidification tank in the later stage. When the equipment is running, relevant personnel can observe the operation conditions in the tank in real time and control the water level to a suitable position in real time; at the same time, the observation window can also be opened, allowing maintenance personnel to knock down and remove the compacted activated carbon in the observation window without stopping the machine. Stable operation of the equipment is ensured.

[0018] (2) The present application utilizes a driving mechanism to drive the lifting ring to reciprocate up and down, thereby driving the ball to reciprocately strike the humidification tank, thereby alleviating the compaction of the activated carbon in the humidification tank.

[0019] (3) The present application uses a baffle and a funnel in combination, and uses the baffle to change the aperture of the funnel outlet, so as to control the amount of powdered activated carbon added according to the pollution level of the sewage being transported. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 It is a first perspective stereogram of the dosing mechanism of the present invention;

[0022] Figure 3 A second perspective stereogram of the dosing mechanism of the present invention;

[0023] Figure 4 It is a three-dimensional cross-sectional view of the humidification tank of the present invention.

[0024] In the figure: 1. storage powder storage silo; 2. mounting frame; 3. dosing mechanism; 31. screw conveyor; 32. humidifying tank; 33. venturi water ejector; 34. observation window; 4. water pipe; 5. additional pump; 6. first valve; 7. second valve; 8. limit mechanism; 81. vertical rod; 82. connecting seat; 83. connecting block; 9. lifting ring; 10. fixed arm; 11. connecting column; 12. sphere; 13. spring; 14. driving mechanism; 141. mounting plate; 142. motor; 143. connector; 144. annular groove; 145. convex rod; 15. horizontal plate; 16. rotating plate; 17. baffle; 18. funnel. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] See also Figure 1-3 As shown, the present application provides a powdered activated carbon dry dosing production line, including a powder storage silo 1 and a mounting frame 2 arranged on one side of the powder storage silo 1;

[0028] The dosing mechanism 3 is arranged on the storage powder storage silo 1, and the dosing mechanism 3 is used for adding activated carbon to realize the pretreatment of raw water quality.

[0029] The dosing mechanism 3 includes a screw conveyor 31 installed on the powder storage silo 1, a humidification tank 32 is installed on the screw conveyor 31, a venturi water ejector 33 is installed on the humidification tank 32, and an observation window 34 is provided on the humidification tank 32. The observation window 34 is made of glass. After on-site research, it can be determined that the water hammer problem is caused by the instantaneous closure of the inlet valve of the venturi water ejector after the equipment is shut down, but the outlet valve of the venturi water ejector is closed after a delay of 5 seconds. At this time, the one-way valve at the rear end of the water ejection outlet and the outlet valve have a 3-4 meter pipeline. After the equipment is shut down, the pipeline between the inlet valve of the venturi water ejector and the outlet one-way valve still has extremely high water pressure. This part of the pressure will flow back to the humidification tank, causing the humidification tank to be temporarily flooded. In order to deal with this part of the problem, the outlet one-way valve position is moved to the outlet position to shorten the length of the pipeline that produces water hammer. The water hammer problem is basically solved.

[0030] Since the valves before and after the Venturi water ejector use double-coil self-retaining valves, if there is an emergency situation of sudden power outage during the operation of the equipment, the equipment will be directly powered off and the valve will not move, causing the back-end process water to directly flow into the silo through the water ejector and humidification tank, causing an accident. In order to solve the problem of water backflow caused by the self-retaining valve due to sudden power outage, we changed the water inlet valve at the front end of the booster pump to a single-coil power-off self-resetting pneumatic valve, and added UPS to the control equipment to prevent serious failures caused by power outages in the control equipment.

[0031] Since the control valves before and after the Venturi water ejector are pneumatic valves, the air compressor and the air tank are required to provide power to start and stop the valves. If there is a leak in the air circuit, the valve will not be able to move. When the equipment is started, the pressurized water of the booster pump will directly impact the pipeline, and the pipeline may be damaged due to excessive pressure; when the equipment stops, the booster pump will stop directly, the one-way valve behind the Venturi water ejector will be closed due to pressure, and the raw water in front of the Venturi water ejector will be directly poured into the storage pipe through the Venturi water ejector and the humidification tank, causing the material to compact. At the same time, the air compressor with air leakage in the air circuit will continue to work for a long time, which may cause damage to the air compressor. In order to solve the problem that the valve failure cannot be started and stopped due to air leakage in the air circuit, we set a pressure gauge for detecting air pressure at the outlet of the air tank to continuously detect the air pressure in the air circuit. When the pressure in the air circuit is lower than the limit, an alarm will be immediately issued, and the maintenance personnel will be stopped to handle it immediately. At the same time, the operation signal of the air compressor is detected. When the running time of the air compressor exceeds the allowable value, an alarm will be issued immediately to notify the maintenance personnel to handle it. After the improvement, production accidents caused by insufficient pressure due to damaged gas line were effectively prevented.

[0032] The venturi water ejector 33 is installed with a water pipe 4, and a boosting pump 5 is provided on the water pipe 4. A boosting pump outlet pressure gauge is added at the boosting pump 5. By detecting the difference between the boosting pump outlet pressure and the main pipe pressure, it is judged whether the pressure difference is sufficient for the venturi water ejector to generate negative pressure. When the pressure is insufficient, the system stops suddenly. At the same time, an alarm is immediately issued when the pressure difference drops to a dangerous area to remind the maintenance personnel to perform corresponding maintenance work on the equipment.

[0033] The venturi water ejector 33 is provided with a first valve 6 and a second valve 7, respectively. The operation mode of the pneumatic valves before and after the jet device was originally designed to be opened or closed simultaneously with the booster pump. Due to the difference in the start-stop smoothness of the valve, the outlet valve or the inlet valve cannot be opened in time, resulting in the backflow of pressurized water into the humidification tank, which eventually causes the process water to enter the silo and cause the material to compact. In order to solve this problem, we optimized the program design. When starting, the outlet valve of the venturi water ejector is opened first. When the outlet is detected to be fully open, the inlet valve is opened. When the inlet valve is fully open, the booster pump and the valve before the pump are opened at the same time; when shutting down, the inlet valve, the booster pump and the valve before the pump are closed at the same time. After optimization, there will basically be no backflow failure caused by the venturi water ejector valve.

[0034] Embodiment 2

[0035] Based on Example 1, see Figure 2 and Figure 3 shown.

[0036] The outside of the humidification tank 32 is connected to a lifting ring 9 through a limiting mechanism 8, and the outside of the humidification tank 32 is fixedly connected to a fixed arm 10, and a connecting column 11 is rotatably connected to the fixed arm 10, and a ball 12 is fixedly connected to the connecting column 11, and a spring 13 is fixedly connected between the connecting column 11 and the humidification tank 32. The outside of the humidification tank 32 is provided with a driving mechanism 14 for driving the lifting ring 9 to move.

[0037] The limiting mechanism 8 includes a vertical rod 81 fixedly connected to the outside of the humidifying tank 32. Two vertical rods 81 are provided. The outside of the vertical rod 81 is slidably connected to a connecting seat 82. The connecting seat 82 is fixedly connected to the lifting ring 9. The bottom end of the vertical rod 81 is fixedly connected to a connecting block 83.

[0038] The driving mechanism 14 includes a mounting plate 141 fixedly connected to the outside of the humidifying tank 32, a motor 142 is fixedly connected to the mounting plate 141, a connecting body 143 is fixedly connected to the motor 142, an elliptical annular groove 144 is provided on the outer surface of the connecting body 143, a convex rod 145 is provided in the annular groove 144, and the convex rod 145 is fixedly connected to the lifting ring 9.

[0039] The fixing arms 10 are provided in plurality, and the connecting blocks 83 and the lifting rings 9 are fitted together.

[0040] Embodiment 3

[0041] Based on Example 1, see Figure 4 shown.

[0042] A transverse plate 15 is fixedly connected inside the humidifying tank 32 , a rotating plate 16 is rotatably connected to the bottom of the transverse plate 15 , and a baffle 17 is fixedly connected to the rotating plate 16 .

[0043] The interior of the humidifying tank 32 is fixedly connected with a funnel 18 , and the baffle 17 is attached to the bottom of the funnel 18 .

[0044] Embodiment 4

[0045] In combination with Embodiment 1, Embodiment 2 and Embodiment 3, see Figure 1-4 shown.

[0046] Automatic continuous dosing is achieved by setting up the dosing mechanism 3, and an observation window 34 is added at the humidification tank 32, which is convenient for handling the process conditions in the humidification tank 32 and for cleaning the activated carbon accumulated in the humidification tank 32 in the later maintenance. When the equipment is running, relevant personnel can observe the operation conditions in the tank in real time and control the water level to a suitable position in real time; at the same time, the observation window 34 can also be opened, allowing maintenance personnel to knock down and remove the compacted activated carbon in the observation window 34 without stopping the machine, thus ensuring the stable operation of the equipment.

[0047] The working principle of the present invention is as follows: powdered activated carbon is transported to the powder storage silo 1 through a cyclone separator, and the first valve 6 and the second valve 7 (i.e., the front and rear valves) on the Venturi water ejector 33 are opened. When negative pressure is formed in the Venturi water ejector 33 and the set time is reached, the screw conveyor 31 automatically starts to work and adds the powdered activated carbon to the Venturi water ejector 33 (the screw conveyor 31 adopts quantitative screw metering, and automatically adjusts the speed of the screw conveyor variable frequency motor as the amount of water changes, accurately controls the amount of powdered activated carbon added, and ensures that the amount of powdered activated carbon added changes with the amount of water, keeping the ratio constant). After that, the Venturi water ejector 33 mixes the powdered activated carbon with water and puts it into the addition point. At the same time, the motor 142 is controlled by the controller to work (the motor 142 is not always in working state), so that the motor 142 drives the connecting body 143 to rotate, and then, the annular groove 144 and the protruding rod 145 are used in combination to drive the lifting ring 9 to move up and down on the vertical rod 81, and then the lifting ring 9 and the spring 13 are used in combination to drive the connecting column 11 to move back and forth, thereby driving the ball 12 to knock the humidification tank 32 back and forth, which can alleviate the hardening of the activated carbon in the humidification tank 32. In addition, by using the baffle 17 and the funnel 18 in combination, the aperture of the outlet of the funnel 18 is changed by the baffle 17, and the amount of powdered activated carbon can be controlled according to the pollution degree of the sewage transported.

[0048] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A powdered activated carbon dry dosing production line, characterized by: It comprises a powder storage silo (1) and a mounting frame (2) arranged on one side of the powder storage silo (1); The dosing mechanism (3) is arranged on the storage powder storage silo (1), and the dosing mechanism (3) is used to add activated carbon to achieve pretreatment of raw water quality.

2. A powdered activated carbon dry dosing production line according to claim 1, characterized in that: The dosing mechanism (3) comprises a screw conveyor (31) mounted on a powder storage silo (1), a humidifying tank (32) mounted on the screw conveyor (31), a venturi water ejector (33) mounted on the humidifying tank (32), and an observation window (34) arranged on the humidifying tank (32).

3. A powdered activated carbon dry dosing production line according to claim 2, characterized in that: A water pipe (4) is installed on the Venturi water ejector (33), and an additional pump (5) is arranged on the water pipe (4).

4. A powdered activated carbon dry dosing production line according to claim 2, characterized in that: The outside of the humidifying tank (32) is connected to a lifting ring (9) via a limiting mechanism (8); the outside of the humidifying tank (32) is fixedly connected to a fixing arm (10); a connecting column (11) is rotatably connected to the fixing arm (10); a sphere (12) is fixedly connected to the connecting column (11); a spring (13) is fixedly connected between the connecting column (11) and the humidifying tank (32); and a driving mechanism (14) for driving the lifting ring (9) to move is provided on the outside of the humidifying tank (32).

5. A powdered activated carbon dry dosing production line according to claim 4, characterized in that: The limiting mechanism (8) comprises a vertical rod (81) fixedly connected to the outside of the humidifying tank (32), two vertical rods (81) are provided, the outside of the vertical rod (81) is slidably connected to a connecting seat (82), the connecting seat (82) is fixedly connected to the lifting ring (9), and the bottom end of the vertical rod (81) is fixedly connected to a connecting block (83).

6. A powdered activated carbon dry dosing production line according to claim 4, characterized in that: The driving mechanism (14) comprises a mounting plate (141) fixedly connected to the outside of the humidifying tank (32), a motor (142) fixedly connected to the mounting plate (141), a connecting body (143) fixedly connected to the motor (142), an elliptical annular groove (144) is provided on the outer surface of the connecting body (143), a convex rod (145) is provided in the annular groove (144), and the convex rod (145) is fixedly connected to the lifting ring (9).

7. A powdered activated carbon dry dosing production line according to claim 2, characterized in that: A transverse plate (15) is fixedly connected to the interior of the humidifying tank (32), a rotating plate (16) is rotatably connected to the bottom of the transverse plate (15), and a baffle (17) is fixedly connected to the rotating plate (16).

8. A powdered activated carbon dry dosing production line according to claim 7, characterized in that: A funnel (18) is fixedly connected to the interior of the humidifying tank (32), and the baffle (17) is attached to the bottom of the funnel (18).

9. A powdered activated carbon dry dosing production line according to claim 2, characterized in that: The Venturi water ejector (33) is respectively provided with a first valve (6) and a second valve (7).

10. A powdered activated carbon dry dosing production line according to claim 5, characterized in that: The fixed arms (10) are provided in plurality, and the connecting blocks (83) and the lifting rings (9) are fitted together.

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