A metering device for activated carbon injection

Abstract

The utility model relates to a kind of metering device for active carbon injection, including weighing frame, tank, controller, be equipped with multiple first weighing device on weighing frame, the circumference of tank is equipped with lug corresponding with first weighing device, the bottom of tank is equipped with discharge port, discharge port is connected with distribution device by bellows pipe, the bottom of distribution device is equipped with two feeding device, feeding device is connected with distribution device by hose, the bottom of weighing frame located feeding device is equipped with second weighing device, pneumatic plug valve is equipped between hose and distribution device, first weighing device, distribution device, feeding device, pneumatic plug valve are electrically connected with controller, by first weighing device to tank and active carbon total weight real-time monitoring, second weighing device is accurately metered to single feeding device, the linkage control of controller to distribution device, feeding device and pneumatic plug valve is combined, form double measurement verification mechanism, effectively improve the active carbon measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology for waste incineration power generation, specifically to a metering and feeding device for activated carbon injection. Background Technology

[0002] In waste-to-energy plants, the core function of activated carbon injection is to remove toxic and harmful pollutants from incineration flue gas that are difficult to treat using conventional processes. By precisely injecting powdered activated carbon into the desulfurized flue, its large specific surface area and strong adsorption properties efficiently capture dioxins and gaseous mercury in the flue gas, forming an "activated carbon-pollutant" complex. This complex is then intercepted along with the flue gas in a bag filter, ultimately ensuring that the emission concentrations of pollutants such as dioxins and mercury meet national standards, preventing them from entering the atmosphere and causing environmental harm and human health risks. With increasingly stringent environmental regulations, the environmental emission requirements for waste-to-energy plants are also becoming more stringent. The accuracy of activated carbon metering in the activated carbon injection system is directly related to the exhaust gas treatment effect and environmental compliance. Generally, metering relies on a feeder and a solid flow meter. However, due to the complex characteristics of the medium, the measurement deviation of the solid flow meter is relatively large, resulting in a significant deviation between the activated carbon usage and the actual inventory. The large fluctuations in activated carbon supply during injection not only increase environmental risks but also affect overall operational efficiency. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a metering and feeding device for activated carbon injection.

[0004] The objective of this utility model can be achieved through the following technical solution: A metering and feeding device for activated carbon injection includes a weighing rack, a material tank, and a controller. The weighing rack is provided with multiple first weighing devices. The material tank is provided with lugs corresponding to the first weighing devices on its circumference. The bottom of the material tank is provided with a discharge port. The discharge port is connected to a distributing device through a corrugated pipe. The bottom of the distributing device is provided with two feeding devices. The feeding devices are connected to the distributing devices through hoses. A second weighing device is provided on the weighing rack at the bottom of the feeding devices. A pneumatic slide valve is provided between the hose and the distributing device. The first weighing devices, the distributing devices, the feeding devices, and the pneumatic slide valve are all electrically connected to the controller.

[0005] Preferably, the first weighing device includes a mounting base and a first weighing sensor. The two ends of the first weighing sensor are hinged to the mounting base, and a weighing seat connected to a lug is installed in the middle of the first weighing sensor.

[0006] Preferably, the material distribution device includes a material tray and a first geared motor. A cover is installed on the material tray, and a first inlet connected to a corrugated pipe is provided on the cover. A scraper is rotatably provided inside the material tray, and the scraper is drivenly connected to the first geared motor. A first outlet connected to a hose is symmetrically opened at the bottom of the material tray, and a pneumatic slide valve is installed between the first outlet and the hose.

[0007] Preferably, a conical top cover is provided on the scraper at the position corresponding to the first feed inlet.

[0008] Preferably, the feeding device includes a base and a hopper. The top of the hopper is provided with a cover plate, and the cover plate is provided with a second feed inlet connected to a hose. The bottom of the hopper is provided with a connected feed pipe, and one end of the feed pipe is provided with a second discharge port. A screw is rotatably provided inside the feed pipe. A gearbox is provided on the base. The output end of the gearbox is connected to the screw drive, and the input end of the gearbox is connected to a second reduction motor drive.

[0009] Preferably, the weighing rack is provided with a support, the support has a first waist hole, and the side of the base has a second waist hole corresponding to the first waist hole. Bolts are movably installed in the first waist hole and the second waist hole.

[0010] Preferably, the second weighing device includes a base plate and a weighing plate, with elastic sheets provided on the sides of the base plate and the weighing plate, and a second weighing sensor fixedly provided between the base plate and the weighing plate.

[0011] Preferably, the bottom of the weighing plate is provided with a limiting frame, the limiting frame is provided with a guide hole, the bottom plate is provided with a guide post that slides with the guide hole, a lower limiting nut is threadedly connected to the guide post below the guide hole, and an upper limiting nut is threadedly connected to the guide post above the guide hole.

[0012] Preferably, a vibrator is installed on the outside of the tank.

[0013] Preferably, a manual slide gate valve is provided between the discharge port and the bellows.

[0014] The beneficial effects of this utility model are as follows: the first weighing device monitors the total weight of the material tank and activated carbon in real time, the second weighing device accurately measures the weight of each individual feeding device, and the flexible connection of the corrugated pipe and hose avoids interference from rigidity that affects the weighing accuracy. Combined with the controller's linkage control of the dispensing device, feeding device and pneumatic slide valve, a dual metering verification mechanism is formed, which effectively improves the accuracy of activated carbon metering, reduces measurement deviations caused by the characteristics of the medium, can stably control the supply of activated carbon, reduce environmental risks, improve operational efficiency, and meet the high precision requirements of waste incineration power plants for activated carbon injection systems. Attached Figure Description

[0015] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a metering and feeding device for activated carbon injection according to the present invention.

[0017] Figure 2 This is a schematic diagram of the first weighing device of a metering and feeding device for activated carbon injection according to the present invention.

[0018] Figure 3 This is a schematic diagram of the material distribution device of a metering and feeding device for activated carbon injection according to the present invention.

[0019] Figure 4 This is a schematic diagram of the feeding device structure of a metering and feeding device for activated carbon injection according to the present invention.

[0020] Figure 5 This is a schematic diagram of the second weighing device of a metering and feeding device for activated carbon injection according to the present invention.

[0021] Figure 6 for Figure 1 A partial schematic diagram of point A in the middle.

[0022] The labels in the diagram represent: 1. Weighing rack; 2. Material tank; 3. First weighing device; 4. Lug; 5. Discharge port; 6. Corrugated pipe; 7. Distributor; 8. Feeding device; 9. Hose; 10. Second weighing device; 11. Pneumatic slide gate valve; 12. Mounting base; 13. First weighing sensor; 14. Weighing base; 15. Material tray; 16. First geared motor; 17. Cover; 18. First feed inlet; 19. Scraper; 20. First discharge outlet; 21. Conical top cover; 22. Base; 23. Hopper; 24. Cover plate; 25. Second feed inlet; 26. Material pipe; 27. Second discharge outlet; 28. Screw; 29. ​​Gearbox; 30. Second geared motor; 31. Bracket; 32. First waist hole; 33. Second waist hole; 34. Bolt; 35. Base plate; 36. Weighing plate; 37. Elastic sheet; 38. Second weighing sensor; 39. Limiting frame; 40. Guide hole; 41. Guide post; 42. Lower limit nut; 43. Upper limit nut; 44. Vibrator; 45. Manual slide valve. Detailed Implementation

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See Figures 1 to 6As shown, the structure of this utility model is as follows: a metering and feeding device for activated carbon injection, including a weighing rack 1, a material tank 2, and a controller. The weighing rack 1 is provided with multiple first weighing devices 3. The material tank 2 is provided with lugs 4 corresponding to the first weighing devices 3 on its circumference. The bottom of the material tank 2 is provided with a discharge port 5. The discharge port 5 is connected to a distributing device 7 through a corrugated pipe 6. The bottom of the distributing device 7 is provided with two feeding devices 8. The feeding devices 8 are connected to the distributing device 7 through a hose 9. The weighing rack 1 is provided with a second weighing device 10 located at the bottom of the feeding devices 8. A pneumatic slide valve 11 is provided between the hose 9 and the distributing device 7. The first weighing devices 3, the distributing device 7, the feeding device 8, and the pneumatic slide valve 11 are all electrically connected to the controller. Specifically, the multiple first weighing devices 3 on the weighing rack 1 are connected to the lugs 4 on the circumference of the material tank 2, which can monitor the total weight of the material tank 2 and the activated carbon inside in real time, providing basic data for overall material quantity monitoring. The discharge port 5 at the bottom of the material tank 2 is connected to the distribution device 7 via a corrugated pipe 6. The corrugated pipe 6 is a flexible connection, preventing rigid force transmission between the material tank 2 and the distribution device 7 from interfering with the weighing accuracy of the first weighing device 3. It also allows the material tank 2 to float slightly relative to the weighing rack 1, ensuring the first weighing device 3 can accurately detect the weight. The distribution device 7 is responsible for evenly distributing the concentrated activated carbon to two feeding devices 8. The feeding devices 8 and the distribution device 7 are connected by a flexible hose 9. The flexibility of the hose 9 prevents the rigid force between the distribution device 7 and the feeding device 8 from affecting the detection accuracy of the second weighing device 10, and allows the feeding device 8 to float slightly relative to the weighing rack 1, ensuring the metering accuracy of the second weighing device 10. A pneumatic slide valve 11 is installed between each hose 9 and the distribution device 7, which can independently control the material flow and flow rate of the corresponding branch. The second weighing device 10 at the bottom of the feeding device 8 can perform secondary weighing and metering of the material conveyed by a single feeding device 8, forming a dual metering verification with the first weighing device 3, further improving the feeding accuracy. As the core of the system, the controller receives weight signals from the first weighing device 3 and the second weighing device 10. At the same time, it performs real-time control on the operating status of the distributing device 7, the conveying rate of the feeding device 8, and the opening and closing status of the pneumatic slide valve 11. Through a preset algorithm, it coordinates the linkage of various components to achieve precise control of the entire process from activated carbon storage, distribution to conveying, ensuring that the amount of activated carbon entering the injection device is precisely matched with the flue gas treatment requirements.

[0027] like Figure 2As shown, the first weighing device 3 includes a mounting base 12 and a first weighing sensor 13. Both ends of the first weighing sensor 13 are hinged to the mounting base 12. A weighing seat 14, connected to a lug 4, is mounted in the middle of the first weighing sensor 13. Specifically, the mounting base 12 is fixed to the weighing frame 1 to provide stable support. The two ends of the first weighing sensor 13 are hinged to the mounting base 12. This connection structure effectively eliminates lateral force interference to the sensor, ensuring that the sensor only bears the vertical weight load, thus improving weighing accuracy. The weighing seat 14 in the middle of the first weighing sensor 13 is rigidly connected to the lug 4 of the material tank 2. When the material tank 2 is loaded with activated carbon, its weight is transferred to the weighing seat 14 through the lug 4, and then acts on the first weighing sensor 13. The sensor converts the weight signal into an electrical signal and transmits it to the controller. The controller calculates the real-time remaining amount of activated carbon in the material tank 2 and the feeding rate based on the signal changes, providing a basis for adjusting the operating parameters of the dispensing device 7 and the feeding device 8.

[0028] like Figure 3 As shown, the material distribution device 7 includes a material tray 15 and a first reduction motor 16. A cover 17 is installed on the material tray 15, and a first inlet 18 connected to the corrugated pipe 6 is provided on the cover 17. A scraper 19 is rotatably installed inside the material tray 15. The scraper 19 is connected to the first reduction motor 16 for transmission. A first outlet 20 connected to the hose 9 is symmetrically opened at the bottom of the material tray 15. A pneumatic slide valve 11 is installed between the first outlet 20 and the hose 9. Specifically, activated carbon enters the material tray 15 from the discharge port 5 of the material tank 2 through the corrugated pipe 6 and the first inlet 18 on the cover 17. The first reduction motor 16 drives the scraper 19 to rotate at a uniform speed inside the material tray 15. The scraper 19 is in close contact with the inner wall of the material tray 15, which can evenly scrape the activated carbon accumulated in the center of the material tray 15 to the two first outlets symmetrically arranged at the bottom. The pneumatic slide valve 11 installed between each first discharge port 20 and the hose 9 can adjust the opening under the control of the controller to precisely control the amount of activated carbon entering the corresponding feeding device 8, realize the on-demand distribution of the two materials, and ensure the feeding balance of the two downstream feeding devices 8.

[0029] like Figure 3 As shown, a conical top cover 21 is provided on the scraper 19 at the position corresponding to the first feed port 18. Specifically, the conical top cover 21 on the scraper 19 is directly facing the first feed port 18 of the sealing 17 of the distributing device 7. When the activated carbon falls from the first feed port 18, it will first contact the inclined conical surface of the conical top cover 21 and slide down in all directions along the conical surface under the action of gravity, avoiding the material from directly accumulating in a local position on the scraper 19. This allows the scraper 19 to push the activated carbon to the two first discharge ports 20 more evenly during the rotation process, reducing the material distribution deviation caused by uneven material accumulation and improving the distribution accuracy and stability of the distributing device 7.

[0030] like Figure 4As shown, the feeding device 8 includes a base 22 and a hopper 23. The top of the hopper 23 is provided with a cover plate 24, and the cover plate 24 is provided with a second inlet 25 connected to the hose 9. The bottom of the hopper 23 is provided with a connected feed pipe 26, and one end of the feed pipe 26 is provided with a second outlet 27. A screw 28 is rotatably installed inside the feed pipe 26. A gearbox 29 is provided on the base 22. The output end of the gearbox 29 is connected to the screw 28, and the input end of the gearbox 29 is connected to a second reduction motor 30. Specifically, after the activated carbon enters the hopper 23 through the second inlet 25 on the cover plate 24, it falls into the feed pipe 26 connected to the bottom. The second reduction motor 30 on the base 22 drives the screw 28 inside the feed pipe 26 to rotate after being reduced in speed by the gearbox 29. The spiral blades of the screw 28 cooperate with the inner wall of the feed pipe 26, and continuously and stably push the activated carbon forward during the rotation process, and finally discharge it from the second outlet 27 at one end of the feed pipe 26. By adjusting the speed of the second reduction motor 30, the rotation speed of the screw 28 can be precisely controlled, thereby adjusting the amount of activated carbon conveyed per unit time, realizing the quantitative feeding function, and meeting the injection volume requirements under different working conditions.

[0031] like Figure 6 As shown, the weighing rack 1 is provided with a bracket 31, and the bracket 31 is provided with a first waist hole 32. The side of the base 22 is provided with a second waist hole 33 corresponding to the first waist hole 32. Bolts 34 are movably installed in the first waist hole 32 and the second waist hole 33. Specifically, the base 22 can float freely up and down along the length direction of the first waist hole 32 and the second waist hole 33 to ensure that the weight of the feeding device 8 can be fully applied to the second weighing device 10 below, ensuring the accuracy of the weighing detection; at the same time, it restricts the horizontal movement of the base 22 to prevent the feeding device 8 from shifting laterally due to vibration or other external forces, thereby preventing horizontal displacement from interfering with the sensor of the second weighing device and further ensuring its detection accuracy.

[0032] like Figure 5 As shown, the second weighing device 10 includes a base plate 35 and a weighing plate 36. Elastic sheets 37 are provided on the sides of the base plate 35 and the weighing plate 36. A second weighing sensor 38 is fixed between the base plate 35 and the weighing plate 36. Specifically, the base plate 35 is fixed to the weighing rack 1, and the weighing plate 36 supports the feeding device 8. The elastic sheets 37 on the sides of the base plate 35 and the weighing plate 36 ensure the relative position of the two are stable and provide flexible support for the weighing plate 36, allowing it to move slightly up and down with the feeding device 8. The second weighing sensor 38 fixed between the base plate 35 and the weighing plate 36 can directly sense the weight changes of the feeding device 8 and the material inside, converting the weight signal into an electrical signal and transmitting it to the controller. This enables real-time monitoring of the conveying capacity of a single feeding device 8, forming a complementary verification with the measurement data of the first weighing device 3, and improving the system's measurement accuracy.

[0033] like Figure 5As shown, the weighing plate 36 has a limiting frame 39 at its bottom, with a guide hole 40 on the limiting frame 39. The base plate 35 has a guide post 41 that slides with the guide hole 40. A lower limiting nut 42 is threaded onto the guide post 41 below the guide hole 40, and an upper limiting nut 43 is threaded onto the guide post 41 above the guide hole 40. Specifically, the limiting frame 39 is fixed to the bottom of the weighing plate 36, and its guide hole 40 slides with the guide post 41 on the base plate 35, forming a vertical guiding structure. This ensures that the weighing plate 36 moves only vertically when the load changes, avoiding horizontal deviation that could affect the measurement accuracy of the second weighing sensor 38. The lower limiting nut 42 and upper limiting nut 43 on the guide post 41 are located below and above the guide hole 40, respectively. Adjusting the nut positions limits the vertical movement range of the weighing plate 36, preventing damage to the second weighing sensor 38 due to excessive impact from material overload or equipment vibration, thus protecting the sensor.

[0034] like Figure 1 As shown, a vibrator 44 is installed on the outside of the material tank 2. Specifically, the vibrator 44 is usually pneumatic or electric. When the activated carbon in the material tank 2 clumps or bridging materials form an arch-shaped structure in the tank due to moisture, compression, etc., which hinders the falling, the periodic vibration generated by the vibrator 44 is transmitted to the wall of the material tank 2 and the internal material. This can break the adsorption and friction between the materials, loosen the clumps, and collapse the bridging structure, ensuring that the activated carbon can fall smoothly from the discharge port 5 at the bottom of the material tank 2. This ensures the continuous and stable operation of the feeding system and avoids feeding interruption due to material blockage.

[0035] like Figure 1 As shown, a manual slide gate valve 45 is provided between the discharge port 5 and the bellows 6. Specifically, during normal operation, the manual slide gate valve 45 is fully open and does not affect material conveying. When it is necessary to inspect and maintain downstream equipment such as the material distribution device 7 and the feeding device 8, closing the manual slide gate valve 45 can cut off the material channel between the material tank 2 and the downstream, preventing the activated carbon from falling continuously. In addition, when the pneumatic slide gate valve 11 fails, the manual slide gate valve 45 can be used as a backup control method to improve the reliability and safety of the system operation.

[0036] In practical use, during operation, the material tank 2 is mounted on the first weighing device 3 of the weighing rack 1 via circumferential lugs 4. The first weighing device 3 monitors the total weight of the material tank 2 and the activated carbon inside in real time and transmits the data to the controller. When feeding is required, the discharge port 5 at the bottom of the material tank 2 opens, and the activated carbon enters the distribution device 7 through the corrugated pipe 6. The flexible connection of the corrugated pipe 6 avoids interference from rigid transmission to the first weighing device 3, while allowing the material tank 2 to float slightly to ensure accurate weighing. After the distribution device 7 is started, it evenly distributes the activated carbon to two outlets. The pneumatic slide valve 11 at each outlet adjusts its opening according to the controller command, controlling the activated carbon to enter the corresponding feeding device 8 through the hose 9. The flexibility of component 9 prevents the rigid force between the dispensing device 7 and the feeding device 8 from affecting the second weighing device 10 at the bottom of the feeding device 8, and allows the feeding device 8 to float slightly to ensure that the second weighing device 10 accurately measures the material weight of a single feeding device 8. Under the control of the controller, the feeding device 8 quantitatively delivers activated carbon to the downstream injection device. During this process, the second weighing device 10 feeds back real-time weight data to the controller, forming a double verification with the first weighing device 3. The controller processes all weight signals through a preset algorithm, dynamically adjusts the operation of the dispensing device 7, the conveying rate of the feeding device 8, and the opening of the pneumatic slide valve 11, and realizes the linkage of various components to ensure that activated carbon is supplied accurately as needed.

[0037] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A metering and feeding device for activated carbon injection, characterized in that: The device includes a weighing rack (1), a material tank (2), and a controller. The weighing rack (1) is equipped with multiple first weighing devices (3). The material tank (2) is provided with lugs (4) corresponding to the first weighing devices (3) in the circumferential direction. The bottom of the material tank (2) is provided with a discharge port (5). The discharge port (5) is connected to a distributing device (7) through a corrugated pipe (6). The bottom of the distributing device (7) is provided with two feeding devices (8). The feeding devices (8) are connected to the distributing device (7) through a hose (9). The weighing rack (1) is provided with a second weighing device (10) located at the bottom of the feeding device (8). A pneumatic slide valve (11) is provided between the hose (9) and the distributing device (7). The first weighing devices (3), the distributing device (7), the feeding device (8), and the pneumatic slide valve (11) are all electrically connected to the controller.

2. The metering and feeding device for activated carbon injection according to claim 1, characterized in that: The first weighing device (3) includes a mounting base (12) and a first weighing sensor (13). The two ends of the first weighing sensor (13) are hinged to the mounting base (12), and a weighing seat (14) connected to the lug (4) is installed in the middle of the first weighing sensor (13).

3. The metering and feeding device for activated carbon injection according to claim 1, characterized in that: The material distribution device (7) includes a material tray (15) and a first reduction motor (16). A cover (17) is installed on the material tray (15). A first inlet (18) connected to the corrugated pipe (6) is provided on the cover (17). A scraper (19) is rotatably provided inside the material tray (15). The scraper (19) is connected to the first reduction motor (16) in a transmission. A first outlet (20) communicating with the hose (9) is symmetrically opened at the bottom of the material tray (15). A pneumatic slide valve (11) is installed between the first outlet (20) and the hose (9).

4. The metering and feeding device for activated carbon injection according to claim 3, characterized in that: The scraper (19) is provided with a conical top cover (21) at the position corresponding to the first feed inlet (18).

5. The metering and feeding device for activated carbon injection according to claim 1, characterized in that: The feeding device (8) includes a base (22) and a hopper (23). The top of the hopper (23) is provided with a cover plate (24). The cover plate (24) is provided with a second inlet (25) connected to the hose (9). The bottom of the hopper (23) is provided with a connected material pipe (26). One end of the material pipe (26) is provided with a second outlet (27). A screw (28) is rotatably provided inside the material pipe (26). A gearbox (29) is provided on the base (22). The output end of the gearbox (29) is connected to the screw (28) in a transmission. The input end of the gearbox (29) is connected to a second reduction motor (30).

6. The metering and feeding device for activated carbon injection according to claim 5, characterized in that: The weighing rack (1) is provided with a bracket (31), the bracket (31) is provided with a first waist hole (32), and the side of the base (22) is provided with a second waist hole (33) corresponding to the first waist hole (32). Bolts (34) are movably provided in the first waist hole (32) and the second waist hole (33).

7. The metering and feeding device for activated carbon injection according to claim 1, characterized in that: The second weighing device (10) includes a base plate (35) and a weighing plate (36). Elastic sheets (37) are provided on the sides of the base plate (35) and the weighing plate (36). A second weighing sensor (38) is fixedly provided between the base plate (35) and the weighing plate (36).

8. The metering and feeding device for activated carbon injection according to claim 7, characterized in that: The weighing plate (36) is provided with a limiting frame (39) at the bottom. The limiting frame (39) is provided with a guide hole (40). The base plate (35) is provided with a guide post (41) that slides with the guide hole (40). A lower limiting nut (42) is threadedly connected to the guide post (41) below the guide hole (40), and an upper limiting nut (43) is threadedly connected to the guide post (41) above the guide hole (40).

9. The metering and feeding device for activated carbon injection according to claim 1, characterized in that: A vibrator (44) is installed on the outside of the material tank (2).

10. The metering and feeding device for activated carbon injection according to claim 1, characterized in that: A manual slide valve (45) is provided between the discharge port (5) and the bellows (6).

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