Vibrating screen sampling device for activated carbon desulfurization and denitrification system

Abstract

The utility model provides a vibrating screen sampling device for an activated carbon desulfurization and denitrification system, which belongs to the technical field of activated carbon sampling and comprises a blanking pipe and a sampling structure. The sampling structure comprises a sampling opening, an inserting seam and an inserting plate, the sampling opening is formed in the side wall of the discharging pipe, and the opening and closing states of the sampling opening can be switched; the inserting seam is formed in the side wall of the discharging pipe and is positioned below the sampling opening; the inserting plate is movably inserted into the inserting seam and used for sealing the discharging pipe. The vibrating screen sampling device for the activated carbon desulfurization and denitrification system, provided by the utility model, is simple in structure and convenient to use, and can be used for independently sampling, detecting and overhauling each vibrating screen, so that stable operation of the system is prevented from being influenced due to the fact that the problems such as screen damage and blockage cannot be found in time, and the influence on the service life of equipment due to excessive overhauling is reduced; the long-term stable operation of the system is ensured, and meanwhile, the sampling safety environment of staff is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the active carbon sampling technical field, more specifically, relate to a kind of vibration screen sampling device for active carbon desulfurization and denitrification system. BACKGROUND

[0002] In active carbon desulfurization and denitrification system, active carbon is used as adsorbent to remove SO2, dust, dioxin and other pollutants in sintering flue gas, and using the catalytic performance of active carbon, NO x Reaction with ammonia as reducing agent to generate harmless substances. The adsorbed saturated active carbon is transported to the vibrating screen by the chain bucket machine, and the large particle active carbon on the screen is transported to the desorption tower by the chain bucket machine for desorption. The desorbed active carbon is screened again by the vibrating screen, and the large particles after screening are transported to the adsorption system by the chain bucket machine for recycling.

[0003] The particle size of active carbon in the desulfurization and denitrification system is a direct influencing factor of adsorption efficiency and desorption efficiency. The vibrating screen is the core equipment for screening out small particles of active carbon that cannot be recycled in the entire active carbon recycling process. During the screening process of the vibrating screen, if the screen mesh is damaged, the qualified particle size active carbon will be screened out, causing waste of active carbon, lack of material in the system, and increase of cost. If the screen mesh is blocked, small particle active carbon cannot be screened out, and the small particle active carbon entering the adsorption system will reduce the adsorption area, thereby reducing the adsorption efficiency, and even blocking the feeding pipe, causing the adsorption tower to overheat.

[0004] Therefore, it is necessary to periodically check and analyze the undersize of the vibrating screen to ensure stable operation of the entire system. Currently, workers often take samples at the plug valve at the bottom of the pneumatic ash conveying tank under the vibrating screen, which is difficult and dangerous for employees to sample. When there are multiple vibrating screens, the undersize samples obtained at the plug valve are a mixture of undersize from multiple vibrating screens, and it is impossible to accurately determine which vibrating screen needs to be repaired. Once the repair needs to stop the entire active carbon conveying system, it will affect the sintering yield and equipment life. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a vibrating screen sampling device for active carbon desulfurization and denitrification system, to solve the problem of difficult sampling of undersize of vibrating screen in active carbon desulfurization and denitrification system.

[0006] In order to achieve the above object, the utility model provides a technical scheme is: provide a kind of for active carbon desulfurization and denitrification system's vibrating screen sampling device, including downcomer and sampling structure, the downcomer is connected in the bottom of the vibrating screen with downward inclination;The sampling structure includes sampling port, plug joint seam and plug plate, the sampling port is opened on the lateral wall of the downcomer, the sampling port can switch on-off state;The plug joint seam is opened on the lateral wall of the downcomer, and it is located below the sampling port;The plug plate is moved and plugged in the plug joint seam, for closing the downcomer.

[0007] As another embodiment of the application, the plane where the plug joint seam is located is perpendicular to the axial direction of the downcomer.

[0008] As another embodiment of the application, the plug joint seam has two cutting end faces and two cutting side faces, the two cutting end faces are located in the same plane and flush with the central axis of the downcomer, and the two cutting side faces are spaced apart along the axial direction of the downcomer. The plug plate is located in the plug joint seam, and the two sides of the plug plate are respectively fitted to the two cutting side faces and are in sliding fit with the cutting side faces.

[0009] As another embodiment of the application, the plug plate includes a plug body and a first arc-shaped portion, the first arc-shaped portion is semicircular, and the first arc-shaped portion and the plug body are located in the same plane. When the plug plate closes the downcomer, the plug body is located in the plug joint seam, the outer diameter of the first arc-shaped portion is consistent with the inner diameter of the downcomer, and the edge of the first arc-shaped portion is fitted to the inner lateral wall of the downcomer.

[0010] As another embodiment of the application, the plug body is semicircular, the diameter of the plug body is greater than or equal to the outer diameter of the downcomer, the plug body forms a limiting surface outwardly protruding on both sides of the first arc-shaped portion, and the two limiting surfaces are respectively fitted to the two cutting end faces of the plug joint seam.

[0011] As another embodiment of the application, the plug plate further includes a handle connected to the plug body, and the handle is located on the side of the plug body away from the first arc-shaped portion.

[0012] As another embodiment of the application, the sampling port further has a protective baffle above, and the protective baffle is perpendicular to the axial direction of the downcomer.

[0013] As another embodiment of the application, the protective baffle is annular, and the protective baffle is sleeved on the outer periphery of the downcomer.

[0014] The vibration sieve sampling device for the activated carbon desulfurization and denitration system has the advantages that compared with the prior art, the vibration sieve sampling device for the activated carbon desulfurization and denitration system is simple in structure, convenient to use, can separately sample, detect and maintain each vibration sieve, avoids affecting the stable operation of the system due to the problems of screen damage and blockage and the like, reduces the influence of excessive maintenance on the service life of equipment, ensures long-term stable operation of the system, and greatly improves the safety environment of sampling of employees. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0016] Figure 1 The structure diagram of the sampling structure of the vibration sieve provided by the embodiments of the present application is shown in the figure.

[0017] Figure 2 The structure diagram of the plug plate provided by the embodiments of the present application is shown in the figure.

[0018] In the figure: 1, blanking pipe; 2, protective baffle; 3, plug plate; 4, sampling port; 5, plug body; 6, handle; 7, first arc-shaped part. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0020] Please refer to Figure 1 and Figure 2 The vibration sieve sampling device for the activated carbon desulfurization and denitration system provided by the present application will be described. The vibration sieve sampling device for the activated carbon desulfurization and denitration system comprises a blanking pipe 1 and a sampling structure, the blanking pipe 1 is connected to the bottom of the vibration sieve in a downward inclination; the sampling structure comprises a sampling port 4, a plug joint and a plug plate 3, the sampling port 4 is arranged on the side wall of the blanking pipe 1, and the sampling port 4 can switch between open and closed states; the plug joint is arranged on the side wall of the blanking pipe 1 and located below the sampling port 4; the plug plate 3 is movably plugged into the plug joint and used to close the blanking pipe 1.

[0021] The blanking pipe 1 is connected at the bottom of the vibrating screen, and the blanking pipe 1 is inclined downward to convey materials; when sampling is needed, the plug plate 3 is first inserted into the insertion joint to close the blanking pipe 1, and then the sampling port 4 is opened, so that the undersize is moved out of the sampling port 4 by the gravity to a container for containing the sample; after the sampling is completed, the sampling port 4 is closed, and the plug plate 3 is pulled out, so that the blanking pipe 1 can convey materials smoothly. If large-particle activated carbon appears in the sampling, it can be judged that the screen of the corresponding vibrating screen is damaged; if the activated carbon in the sampling is small particles, it can be judged that the corresponding vibrating screen is running normally; if no activated carbon particles fall, it is judged that the gap interval of the screen is blocked by activated carbon particles or other sundries.

[0022] Compared with the prior art, the vibrating screen sampling device for the activated carbon desulfurization and denitrification system has the advantages of simple structure, convenient use, and the ability to individually sample, detect and maintain each vibrating screen, avoids affecting the stable operation of the system due to the problems of screen damage and blockage, reduces the influence on the service life of the equipment due to excessive maintenance, ensures the long-term stable operation of the system, and greatly improves the safety environment of the staff sampling.

[0023] Optionally, an openable sealing plate is arranged at the sampling port 4, and the sealing plate is located outside the sampling port 4 and used for closing the sampling port 4. The sealing plate is not shown in the figure. The sealing plate is an arc-shaped plate, the sealing plate is attached to the outer side wall of the blanking pipe 1, and the sealing plate is clamped or bolted with the pipe wall of the blanking pipe 1. The inner side of the sealing plate has a central protrusion, the central protrusion is embedded in the sampling port 4, and the end face of the central protrusion is smoothly connected with the inner side wall of the blanking pipe 1.

[0024] In some possible embodiments, referring to Figure 1 , the blanking pipe 1 is an inclined downward extending structure, so the sampling port 4 is located on the side closer to the vibrating screen body of the insertion joint. The opening direction of the sampling port 4 is downward or inclined downward, and the depth direction of the insertion joint can be longitudinal or horizontal. When sampling is needed, the plug plate 3 is inserted into the blanking pipe 1, and the plug plate 3 cannot be automatically removed from the insertion joint.

[0025] The side wall of the blanking pipe 1 is cut to form an insertion joint with an opening direction upward of the blanking pipe 1, and the plane where the insertion joint is located is perpendicular to the axial direction of the blanking pipe 1. The plug plate 3 is installed in the insertion joint, and the plug plate 3 is attached in the insertion joint and moves along the plane where the insertion joint is located. When the blanking pipe 1 is closed, the end of the plug plate 3 abuts against the inner side wall of the blanking pipe 1.

[0026] The insertion joint has two cutting end faces and two cutting side faces, the two cutting end faces are located in the same plane and flush with the central axis of the blanking pipe 1, and the two cutting side faces are distributed in the axial direction of the blanking pipe 1. The plug plate 3 is located in the insertion joint, and the two side faces of the plug plate 3 are respectively attached to the two cutting side faces and are in sliding cooperation with the cutting side faces.

[0027] Specifically, as shown in Figure 2 The plug-in plate 3 includes a plug-in body 5 and a first arc-shaped part 7, which are in the same plane. When the plug-in plate 3 closes the blanking pipe 1, the plug-in body 5 is located in the plug-in joint, the outer diameter of the first arc-shaped part 7 is consistent with the inner diameter of the blanking pipe 1, and the edge of the first arc-shaped part 7 is attached to the inner side wall of the blanking pipe 1.

[0028] The plug-in body 5 and the first arc-shaped part 7 are welded or integrally provided, so as to ensure that the plug-in body 5 and the first arc-shaped part 7 are in the same plane and form a flat plate structure. The outer side edge of the first arc-shaped plate is arc-shaped, and the inner diameter of the arc-shaped edge is consistent with the inner diameter of the blanking pipe 1. When the plug-in plate 3 closes the blanking pipe 1, the first arc-shaped plate extends to the inner side of the blanking pipe 1 until the outer side edge abuts against the inner side wall of the blanking pipe 1. At this time, the first arc-shaped plate and the plug-in body 5 completely cut off the internal space of the blanking pipe 1.

[0029] The plug-in body 5 can be semi-circular or rectangular. When the plug-in body 5 is semi-circular, the diameter of the plug-in body 5 is greater than or equal to the outer diameter of the blanking pipe 1, and the plug-in body 5 forms two limiting surfaces protruding outward on both sides of the first arc-shaped part 7, which are respectively attached to the two cut end surfaces of the plug-in joint.

[0030] The length of the plug-in body 5 in the transverse direction is greater than the inner diameter of the blanking pipe 1, so that there is a protruding area between the edge of the plug-in body 5 and the edge of the first arc-shaped plate, which forms a limiting surface.

[0031] When the plug-in body 5 is rectangular, the length direction is greater than the length of the diameter of the blanking pipe 1, and the width direction is greater than the length of the radius of the blanking pipe 1. When the plug-in plate 3 is plugged into the blanking pipe 1, the edge of the plug-in body 5 remains on the outside of the blanking pipe 1.

[0032] The plug-in plate 3 further includes a handle 6 connected to the plug-in body 5, which is located on the side of the plug-in body 5 away from the first arc-shaped part 7. The handle 6 can be plate-shaped or rod-shaped structure, and the handle 6 is welded or bolted or integrally provided with the edge of the plug-in body 5.

[0033] Optionally, a limiting structure is provided on the upper end of the outer side arc-shaped edge of the first arc-shaped part 7, which can be made of silica gel material, etc. The width of the limiting structure in the axial direction of the blanking pipe 1 is greater than the width of the plug-in joint, which is used for limiting and avoiding the first arc-shaped part 7 from being pulled out of the plug-in joint.

[0034] In some possible embodiments, the plug-in plate 3 can also be made into an arc-shaped plug-in plate and a half-circular shielding plate, one end of which is half-circular and faces the inside of the blanking pipe. The shielding plate is attached to one side of the plug-in plate and is in sliding fit with the plug-in plate. The plug-in plate is always located in the plug-in joint, and the shielding plate is telescopic along the depth direction of the plug-in joint to close the blanking pipe 1. The inner side of the plug-in plate is arc-shaped and is smoothly connected with the inner side wall of the blanking pipe. A handle is connected to the shielding plate, which facilitates the sliding of the shielding plate.

[0035] In some possible embodiments, referring to Figure 1 , the sampling port 4 is also provided with a protective baffle 2 which is perpendicular to the axial direction of the blanking pipe 1. The protective baffle 2 is annular and is sleeved on the outer periphery of the blanking pipe 1.

[0036] The protective baffle 2 is sleeved on the outside of the blanking pipe 1 and is in welded fit with the blanking pipe 1. The protective baffle 2 is located above the sampling port 4 and can shield the sampling port 4 below to prevent rainwater and other foreign matters from entering the plug-in joint and the sampling port 4.

[0037] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vibrating screen sampling device for an activated carbon desulfurization and denitrification system, characterized in that, The sampling structure comprises a sampling port (4), a plug joint and a plug plate (3), the sampling port (4) is arranged on the side wall of the downcomer (1), and the sampling port (4) can be switched between an open state and a closed state; the plug joint is arranged on the side wall of the downcomer (1) and is located below the sampling port (4); and the plug plate (3) is movably plugged into the plug joint to close the downcomer (1).

2. The vibrating screen sampling device for an activated carbon desulfurization and denitrification system according to claim 1, characterized in that, The plane where the plug joint is located is perpendicular to the axial direction of the downcomer (1).

3. The vibrating screen sampling device for the activated carbon desulfurization and denitrification system according to claim 2, characterized in that, The plug joint has two cutting end faces and two cutting side faces, the two cutting end faces are located in the same plane and are flush with the central axis of the downcomer (1); the two cutting side faces are distributed along the axial direction of the downcomer (1); and the plug plate (3) is located in the plug joint, and the two side faces of the plug plate (3) are respectively attached to the two cutting side faces and are in sliding fit with the cutting side faces.

4. The vibrating screen sampling device for the activated carbon desulfurization and denitrification system according to claim 3, characterized in that, The plug plate (3) comprises a plug body (5) and a first arc-shaped part (7), the first arc-shaped part (7) is semicircular, and the first arc-shaped part (7) is located in the same plane as the plug body (5); when the plug plate (3) closes the downcomer (1), the plug body (5) is located in the plug joint, the outer diameter of the first arc-shaped part (7) is consistent with the inner diameter of the downcomer (1), and the edge of the first arc-shaped part (7) is attached to the inner side wall of the downcomer (1).

5. The vibrating screen sampling device for the activated carbon desulfurization and denitrification system according to claim 4, characterized in that, The plug body (5) is semicircular, the diameter of the plug body (5) is greater than or equal to the outer diameter of the downcomer (1), the plug body (5) forms a limiting surface protruding outward on both sides of the first arc-shaped part (7), and the two limiting surfaces are respectively used to attach to the two cutting end faces of the plug joint.

6. The vibrating screen sampling device for an activated carbon desulfurization and denitrification system according to claim 5, characterized in that, The plug plate (3) further comprises a handle (6) connected to the plug body (5), and the handle (6) is located on the side of the plug body (5) away from the first arc-shaped part (7).

7. The vibrating screen sampling device for an activated carbon desulfurization and denitrification system according to claim 1, characterized in that, The sampling port (4) is further provided with a protective baffle (2) above the sampling port (4), and the protective baffle (2) is perpendicular to the axial direction of the downcomer (1).

8. The vibrating screen sampling device for the activated carbon desulfurization and denitrification system according to claim 7, characterized in that, The protective baffle (2) is annular, and the protective baffle (2) is sleeved on the outer periphery of the downcomer (1).

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