Active carbon feeding blowout preventer
By designing the activated carbon feeding preventive device and using the combination of buffer cylinder and breathable components, the overflow and spraying problems caused by air pressure fluctuations during the transportation process are solved, and the normal feeding and flue gas purification system of activated carbon is achieved. Stablize.
Patent Information
- Application Number
- CN202421170109.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the existing flue gas purification system, the negative pressure is unstable due to air pressure fluctuations during the transportation process, which causes activated carbon to be unable to spray into the flue on time, and may overflow or dissipate everywhere, pollute the air on the site, endanger the health of the personnel, and explode. risk.
An activated carbon feed spray prevention device is designed, including a buffer cylinder and a breathable assembly. The buffer cylinder is provided outside the first breathable port to limit the overflow of activated carbon; the breathable component includes a spring rod and a sealing plug. The elastic force of the spring rod makes the sealing plug automatically open and close the second breathable port under different air pressure conditions to ensure the normality of activated carbon. Feed.
It effectively avoids the overflow and dispersion of activated carbon, prevents pollution and harm, reduces the risk of explosion, and ensures the normal feeding of activated carbon, improving the safety and stability of the flue gas purification system.
Smart Images
Figure CN222427568U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of environmental protection equipment, in particular to an activated carbon feeding anti-blowout device. Background Art
[0002] Dioxins and heavy metals produced in the flue gas after the incineration of domestic waste are highly toxic and highly cumulative carcinogens, which are extremely harmful to human health. Therefore, many large-scale waste incineration power plants are equipped with flue gas purification systems.
[0003] Many flue gas purification systems in the prior art are equipped with activated carbon injection devices, which often mix powdered activated carbon in an activated carbon storage tank into compressed air through a metering feeder, so that the activated carbon is sprayed into the flue with the compressed air, fully mixed with the flue gas, and adsorbs harmful substances such as dioxins and heavy metals in the flue gas, thereby purifying the flue gas and making the flue gas meet national emission standards.
[0004] Since the compressed air pressure used to transport activated carbon in pipelines is relatively high, in order to prevent the compressed air from "blowing back" into the activated carbon storage tank, a Venturi mixer is usually installed at the location where the compressed air delivery pipeline enters the activated carbon. The airflow cross-section in the Venturi tube is suddenly reduced, the airflow velocity is accelerated, and a local negative pressure is generated to suck the activated carbon into the compressed air.
[0005] In the actual production process, sometimes an air vent is set at a position opposite to the feed port on the metering feeder to facilitate the activated carbon to enter the compressed air delivery pipeline from the feed port on the metering feeder. However, due to different working conditions, the air pressure in the flue may be unstable, which may cause the air pressure of the compressed air connected to it to fluctuate, and then make the negative pressure formed in the venturi tube unstable. Sometimes the speed at which the activated carbon is sucked in cannot keep up with the feeding speed of the metering feeder, but instead cause the activated carbon to overflow from the air vent and even spray everywhere, polluting the air on the site, endangering the health of personnel, and even posing a risk of explosion. Utility Model Content
[0006] The purpose of the utility model is to overcome the problems in the prior art and to provide an activated carbon feeding blowout prevention device which can prevent activated carbon from polluting the air of the site, endangering the health of personnel, and avoiding the risk of explosion.
[0007] The activated carbon feed spray prevention device provided by the utility model is used to prevent the activated carbon from spraying out from the first air permeable port, and comprises:
[0008] A buffer cylinder is arranged outside the first air vent, one end of the buffer cylinder is connected to the first air vent, and the other end of the buffer cylinder is provided with a second air vent;
[0009] A ventilation component is arranged at the second ventilation port, and the ventilation component includes a spring rod and a sealing plug. One end of the spring rod is connected to the buffer cylinder, and the sealing plug is connected to the other end of the spring rod. The spring rod is arranged along the direction of the axis of the second ventilation port so that the sealing plug blocks the second ventilation port through the elastic force of the spring rod, and when the air pressure on the side of the sealing plug away from the buffer cylinder is greater than the sum of the air pressures in the spring rod and the buffer cylinder, the sealing plug moves into the buffer cylinder to open the second ventilation port.
[0010] Preferably, the breathable component also includes an adjustment component, which includes a support frame, an adjustment nut and an adjustment bolt. The support frame is fixedly connected to the buffer tube and is located outside the buffer tube. The adjustment nut is rotatably connected to the support frame. The rotation center of the adjustment nut is colinear with the axis of the spring rod. The adjustment bolt is sleeved in the adjustment nut. The adjustment bolt is threadedly connected to the adjustment nut, and one end of the adjustment bolt is fixedly connected to an end of the spring rod away from the sealing plug.
[0011] Preferably, the radial dimension of the second air vent on one side close to the buffer cylinder is larger than that of the other end, and the shape of the sealing plug is adapted to the shape of the second air vent.
[0012] Preferably, the spring rod has a tensile force when not subjected to the negative pressure in the buffer cylinder.
[0013] Preferably, a baffle is obliquely provided inside the buffer tube, one end of the baffle is fixedly connected to the inner wall of the buffer tube, and the position of the end of the baffle fixedly connected to the buffer tube is higher than the other end.
[0014] Preferably, there are multiple baffles, each baffle is arranged at intervals along the length direction of the buffer tube, each baffle is arranged on two opposite sides of the side wall of the buffer tube, the baffles on the same side are arranged at intervals along the length direction of the buffer tube, the baffles located on the opposite sides are staggered, and one end of the baffle away from the other side is fixedly connected to the inner wall of the buffer tube.
[0015] Preferably, at least the top surface of the baffle is a smooth surface.
[0016] Preferably, the inner wall of the buffer cylinder is a smooth surface.
[0017] Preferably, a blowout prevention net is provided in the buffer tube, and the blowout prevention net is arranged on a side of the buffer tube close to the second air permeable port.
[0018] Preferably, it also includes a pressure sensor, which is used to detect the negative pressure in the venturi mixer, and the pressure sensor is also connected to the metering feeder signal.
[0019] Compared with the prior art, the utility model has the following advantages:
[0020] The activated carbon feeding blowout prevention device of the utility model can use the buffer cylinder to limit the activated carbon that may overflow or spray from the first air port to the buffer cylinder by setting a buffer cylinder at the first air port, so as to prevent the activated carbon from overflowing or spraying everywhere. At the same time, a second air port and a breathable assembly are set at the end of the buffer cylinder away from the first air port. When the negative pressure in the Venturi tube of the Venturi mixer 5 is relatively large, the air pressure on the side of the sealing plug away from the buffer cylinder can be made greater than the sum of the air pressures in the spring rod and the buffer cylinder, so that the second air port is opened, which is conducive to the normal feeding of the activated carbon. When the negative pressure in the Venturi tube is relatively small, the sealing plug can be moved into the second air port by the spring rod, and the second air port is closed to prevent the activated carbon from spraying out from the second air port, thereby preventing the activated carbon from polluting the air on the site, endangering the health of personnel, and avoiding the risk of explosion. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 It is a partial structural schematic diagram A of the utility model.
[0023] Description of reference numerals:
[0024] 1. First air vent; 2. Buffer cylinder; 21. Second air vent; 22. Baffle; 23. Blowout screen; 3. Air vent assembly; 31. Spring rod; 32. Sealing plug; 41. Support frame; 42. Adjusting nut; 43. Adjusting bolt; 5. Venturi mixer; 6. Feeding channel; 61. Conveying auger; 62. Feeding port; 63. Feeding port. DETAILED DESCRIPTION
[0025] The following is combined with Figure 1-2 , the specific implementation of the utility model is described in detail, but it should be understood that the protection scope of the utility model is not limited by the specific implementation. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0026] The activated carbon feeding anti-spraying device provided by the utility model includes a device for preventing the activated carbon from being sprayed out from the first air permeable port 1, including a buffer cylinder 2 and an air permeable component 3, the metering feeder includes a feeding channel 6 and a conveying auger 61, the conveying auger 61 is arranged in the feeding channel 6, the conveying auger 61 is driven to rotate by a driving motor connected to a power supply, a feeding port 62 and a feeding port 63 are arranged on the feeding channel 6, the feeding port 62 and the feeding port 63 are respectively located at the two ends of the conveying auger 61, so that the activated carbon is transported from the feeding port 62 to the feeding port 63 through the conveying auger 61, the first air permeable port 1 is arranged on the feeding channel 6, and the feeding port 63 are located at the same end, and the first air vent 1 is arranged opposite to the feed port 63, the first air vent 1 is arranged upward, the feed port 63 is located above the venturi mixer 5, the buffer cylinder 2 is arranged outside the first air vent 1, one end of the buffer cylinder 2 is communicated with the first air vent 1, and the other end is provided with a second air vent 21, the air permeable component 3 is arranged at the second air permeable port 21, the air permeable component 3 includes a spring rod 31 and a sealing plug 32, one end of the spring rod 31 is connected to the buffer cylinder 2, the sealing plug 32 is connected to the other end of the spring rod 31, the spring rod 31 is arranged in a direction parallel to the axis of the second air vent 21, and the spring rod 31 has There is a force that moves the sealing plug 32 into the second air vent 21 to close the second air vent 21, and when the air pressure on the side of the sealing plug 32 away from the buffer tube 2 is greater than the sum of the air pressures in the spring rod 31 and the buffer tube 2, the sealing plug 32 moves into the buffer tube 2 to open the second air vent 21. By adopting the above technical solution, by arranging the buffer tube 2 at the first air vent 1, the buffer tube 2 can be used to limit the activated carbon that may overflow or spray from the first air vent 1 into the buffer tube 2, so as to prevent the activated carbon from overflowing or spraying everywhere. At the same time, the second air vent is arranged at the end of the buffer tube 2 away from the first air vent 1. The air port 21 and the air permeable component 32, when the negative pressure in the Venturi tube of the Venturi mixer 5 is large, can make the air pressure on the side of the sealing plug 32 away from the buffer cylinder 2 greater than the sum of the air pressures in the spring rod 31 and the buffer cylinder 2, and open the second air port 21, which is conducive to the normal feeding of activated carbon. When the negative pressure in the Venturi tube is small, the sealing plug 32 can be moved to the second air port 21 through the spring rod 31 to close the second air port 21, thereby preventing the activated carbon from spraying out from the second air port 21, thereby preventing the activated carbon from polluting the site air, endangering the health of personnel, and avoiding the risk of explosion.
[0027] As a preferred embodiment, the ventilation component 3 also includes an adjustment component, which includes a support frame 41, an adjustment nut 42 and an adjustment bolt 43. The support frame 41 is fixedly connected to the buffer tube 2 and is located outside the buffer tube 2. The adjustment nut 42 is rotatably connected to the support frame 41. The rotation center of the adjusting nut 42 is colinear with the axis of the spring rod 31. The adjusting bolt 43 is sleeved in the adjusting nut 42. The adjusting bolt 43 is threadedly connected to the adjusting nut 42. One end of the adjusting bolt 43 is fixedly connected to the end of the spring rod 31 away from the sealing plug 32. The adjusting bolt 43 can be displaced axially by rotating the adjusting nut 42. By adopting the above technical solution, the elastic force of the spring rod 31 can be changed by adjusting the length of the spring rod 31, thereby changing the negative pressure that can open the sealing plug 32, and then the patency or closure of the second ventilation port 21 can be adjusted according to actual working conditions.
[0028] As a preferred embodiment, the radial dimension of the side of the second air vent 21 close to the buffer tube 2 is larger than that of the other end, and the shape of the sealing plug 32 is adapted to the shape of the second air vent 21. By adopting the above technical solution, the sealing plug 32 can be limited to prevent the sealing plug 32 from rushing out of the buffer tube 2 from the second air vent 21.
[0029] As a preferred manner, the spring rod 31 has a pulling force when it is not subjected to the negative pressure in the buffer tube 2. By adopting the above technical solution, the second air vent 21 can be better blocked when the negative pressure in the buffer tube 2 is relatively small.
[0030] As a preferred embodiment, a baffle 22 is obliquely provided inside the buffer tube 2, one end of the baffle 22 is fixedly connected to the inner wall of the buffer tube 2, and the end of the baffle 22 fixedly connected to the buffer tube 2 is higher than the other end. By adopting the above technical solution, the flying activated carbon can be better blocked by setting the baffle 22, and at the same time, the end of the baffle 22 fixedly connected to the buffer tube 2 is higher than the other end, thereby preventing the activated carbon from falling back to the first air vent 1.
[0031] As a preferred embodiment, a plurality of baffles 22 are provided, each baffle 22 is spaced apart along the length direction of the buffer tube 2, each baffle 22 is respectively arranged on two opposite sides of the side wall of the buffer tube 2, each baffle 22 on the same side is spaced apart along the length direction of the buffer tube 2, each baffle 22 located on two opposite sides is staggered, and one end of the baffle 22 away from the other side is fixedly connected to the inner wall of the buffer tube 2. The above technical scheme can further improve the blocking ability of flying activated carbon.
[0032] As a preferred embodiment, at least the top surface of the baffle 22 is a smooth surface. By adopting the above technical solution, the activated carbon can be better allowed to fall back to the first air permeability port 1.
[0033] As a preferred embodiment, the inner wall of the buffer cylinder 2 is a smooth surface. By adopting the above technical solution, the activated carbon can be further and better allowed to fall back to the first air permeable port 1.
[0034] As a preferred embodiment, a blowout prevention net 23 is provided in the buffer tube 2, and the blowout prevention net 23 is arranged on the side of the buffer tube 2 close to the second air port 21. By adopting the above technical scheme, the blowout prevention net 23 can better block the flying activated carbon at the lower side of the blowout prevention net 23, thereby preventing the flying activated carbon from flying out from the second air port 21.
[0035] As a preferred method, it also includes a pressure sensor, which is used to detect the negative pressure in the venturi tube. The pressure sensor and the drive motor are both connected to the controller signal. The negative pressure in the venturi tube is measured by the pressure sensor. The pressure sensor feeds back the signal to the controller. The controller controls the output shaft speed of the drive motor, and then adjusts the delivery speed of the activated carbon to adapt to the suction speed of the activated carbon by the venturi mixer 5. The above technical solution can better avoid the dispersion of activated carbon.
[0036] In the description of the utility model, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An activated carbon feed blowout prevention device, used to prevent activated carbon from being blown out from a first air permeable port (1), characterized in that: include: A buffer cylinder (2) is arranged outside the first air vent (1), one end of the buffer cylinder (2) is connected to the first air vent (1), and the other end is provided with a second air vent (21); A vent assembly (3) is arranged at the second vent opening (21), the vent assembly (3) comprising a spring rod (31) and a sealing plug (32), one end of the spring rod (31) is connected to the buffer cylinder (2), the sealing plug (32) is connected to the other end of the spring rod (31), the spring rod (31) is arranged along the axis of the second vent opening (21), so that the sealing plug (32) blocks the second vent opening (21) through the elastic force of the spring rod (31), and when the air pressure on the side of the sealing plug (32) away from the buffer cylinder (2) is greater than the sum of the air pressures of the spring rod (31) and the buffer cylinder (2), the sealing plug (32) moves into the buffer cylinder (2) to open the second vent opening (21).
2. The activated carbon feed blowout prevention device according to claim 1, characterized in that: The ventilation component (3) also includes an adjustment component, which includes a support frame (41), an adjustment nut (42) and an adjustment bolt (43). The support frame (41) is fixedly connected to the buffer cylinder (2) and is located outside the buffer cylinder (2). The adjustment nut (42) is rotatably connected to the support frame (41). The rotation center of the adjustment nut (42) is colinear with the axis of the spring rod (31). The adjustment bolt (43) is sleeved in the adjustment nut (42). The adjustment bolt (43) is threadedly connected to the adjustment nut (42). One end of the adjustment bolt (43) is fixedly connected to an end of the spring rod (31) away from the sealing plug (32).
3. The activated carbon feed blowout prevention device according to claim 2, characterized in that: The radial dimension of the second air vent (21) on one side close to the buffer cylinder (2) is larger than that of the other end, and the shape of the sealing plug (32) is adapted to the shape of the second air vent (21).
4. The activated carbon feed blowout prevention device according to claim 3, characterized in that: The spring rod (31) has a pulling force when not subjected to the negative pressure in the buffer cylinder (2).
5. The activated carbon feed blowout prevention device according to claim 1, characterized in that: A baffle (22) is obliquely provided inside the buffer cylinder (2), one end of the baffle (22) is fixedly connected to the inner wall of the buffer cylinder (2), and the position of the end of the baffle (22) fixedly connected to the buffer cylinder (2) is higher than the other end.
6. The activated carbon feed blowout prevention device according to claim 5, characterized in that: A plurality of baffles (22) are provided, each baffle (22) is arranged at intervals along the length direction of the buffer tube (2), each baffle (22) is arranged on two opposite sides of the side wall of the buffer tube (2), each baffle (22) on the same side is arranged at intervals along the length direction of the buffer tube (2), each baffle (22) located on two opposite sides is staggered, and one end of the baffle (22) away from the other side is fixedly connected to the inner wall of the buffer tube (2).
7. The activated carbon feed blowout prevention device according to claim 5, characterized in that: At least the top surface of the baffle (22) is a smooth surface.
8. The activated carbon feed blowout prevention device according to claim 1, characterized in that: The inner wall of the buffer cylinder (2) is a smooth surface.
9. The activated carbon feed blowout prevention device according to claim 1, characterized in that: A blowout prevention net (23) is arranged inside the buffer cylinder (2), and the blowout prevention net (23) is arranged on a side of the buffer cylinder (2) close to the second air permeability (21).
10. The activated carbon feed blowout prevention device according to claim 1, characterized in that: It also comprises a pressure sensor, which is used to detect the negative pressure in the venturi mixer (5), and the pressure sensor is also connected to the metering feeder signal.