Rake type unloading mechanism and sinter flue gas purification system

Abstract

The utility model relates to sintering flue gas purification system's drive seal technical field discloses a harrow type unloading mechanism and sintering flue gas purification system. The harrow type unloading mechanism includes: unloading harrow, is movably installed in the tower along the first direction, support cover, is connected in the tower wall outside, and the space of inside accommodation communicates with the space in the tower, drive mechanism, including rotating shaft, first crank, rotating shaft penetrates the first side wall of support cover one side, is rotatably installed in the first side wall about its axis, and is sealedly connected with the first side wall, and the axis of rotating shaft is perpendicular to the first direction, and the first end of rotating shaft is fixedly connected with first crank, and the inside connecting position in rotating shaft in the space of accommodation is driven connection with unloading harrow through connecting rod mechanism. In the harrow type unloading mechanism, rotating shaft and first side wall rotary seal, and the linear velocity of sealing surface is smaller, and will not directly enter the dust environment, reduces the abrasion, prolongs the life, is favorable for reducing the risk of leakage.

Description

Technical Field

[0001] This utility model relates to the field of transmission and sealing technology of sintering flue gas purification system, and in particular to a rake-type unloading mechanism and sintering flue gas purification system. Background Technology

[0002] One current purification process for sintering machine flue gas employs countercurrent selective catalytic reduction (CCR) technology using activated carbon. Activated carbon is typically added to an adsorption tower to ensure sufficient contact with the flue gas. Once saturated, the activated carbon is transferred to a desorption tower for further adsorption. The transfer and distribution of activated carbon play a crucial role in the entire desulfurization and denitrification process. Currently, in activated carbon desulfurization and denitrification projects, countercurrent discharge typically uses a rake-type discharge method, also known as a push-pull discharge. The key equipment for the transfer and distribution of activated carbon within the adsorption or desorption tower is the discharge rake. Rake discharge involves horizontal movement, and the push rod of the rake requires a drive unit to move it forward or backward. The rake is located inside the tower, while the drive unit for the push rod is outside. Sealing devices are installed on the tower walls to prevent flue gas and dust from leaking into the air.

[0003] The existing sealing device has a linear motion sealing structure. The sealing surface of this type of seal has a high linear velocity and is constantly changing. Dust can enter the sealing surface and carry dust and impurities to the sealing surface during the movement, accelerating the wear of the sealing surface. In actual use, after a period of use, the wear becomes severe and leakage is likely to occur. Utility Model Content

[0004] The purpose of this utility model is to provide a rake-type unloading mechanism and a sintering flue gas purification system. In this rake-type unloading mechanism, the seal between the rotating shaft and the tower wall is a rotary seal. During operation, the linear velocity of the sealing surface is relatively small, and the position of the sealing surface in the direction of the axis of the rotating shaft remains unchanged. The sealing surface will not directly enter the dust environment and will not be contaminated with dust impurities, which greatly reduces the wear of the sealing surface, extends the service life of the sealing surface, and greatly reduces the risk of leakage.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rake-type unloading mechanism includes:

[0007] A discharge rake, which is movably mounted inside the tower along a first direction;

[0008] A support cover is connected to the tower wall and protrudes outward from the tower wall. The accommodating space inside the support cover is connected to the space inside the tower to form the space inside the tower.

[0009] A transmission mechanism connected to the unloading rake includes a rotating shaft, a first crank, and a connecting rod mechanism. The rotating shaft passes through a first sidewall on one side of the support cover and is rotatably mounted on the first sidewall around its own axis. The rotating shaft and the first sidewall are sealed together, and the axis of the rotating shaft is perpendicular to the first direction. The first end of the rotating shaft is fixedly connected to the first crank. Both the first end of the rotating shaft and the first crank are located outside the first sidewall. The second end of the rotating shaft extends into the receiving space. An internal connection position is formed at the part of the rotating shaft located in the receiving space. The unloading rake is drivenly connected to the internal connection position through the connecting rod mechanism. When the rotating shaft rotates, it drives the unloading rake to move along the first direction.

[0010] In the aforementioned rake-type unloading mechanism, part of the rotating shaft is outside the tower, and part is inside the tower. The rotating shaft is rotary-sealed to the first side wall of the support cover. Applying power to the first crank causes the rotating shaft to rotate. The rotation of the rotating shaft drives the unloading rake to move in a first direction via a linkage mechanism. A positive thrust can be applied to the first crank to make the rotating shaft rotate forward, or a negative thrust can be applied to the first crank to make the rotating shaft rotate backward. This allows the unloading rake to reciprocate in the first direction, enabling it to distribute material. The mechanism is simple, reliable, and easy to operate. Furthermore, the rotating shaft and the first side wall of the support cover are rotary-sealed, and the accommodating space of the support cover has an opening opposite to the tower wall. The other side walls are all closed, making the accommodating space connected to the space inside the tower. Relative to the space inside and outside the tower, the position of the sealing surface between the rotating shaft and the support cover remains unchanged, and the rotating shaft and the support cover form a rotary seal. When the unloading rake moves in a straight line, the linear velocity of the sealing surface is very small, and the sealing surface of the rotating shaft only makes rotational contact without moving in the direction of the axis of the rotating shaft. The sealing surface does not enter the tower and will not come into contact with the dust environment or be contaminated with dust and impurities, which greatly reduces the wear on the sealing surface, extends the service life of the sealing surface, ensures the sealing performance of the rotating shaft seal, and reduces the risk of leakage. At the same time, the sealing surface is not exposed outside the tower, avoiding the risk of bringing dust and impurities inside the tower to the outside.

[0011] Therefore, in the above-mentioned rake-type unloading mechanism, the seal between the rotating shaft and the tower wall is a rotary seal. During operation, the linear velocity of the sealing surface is relatively small, and the position of the sealing surface in the direction of the axis of the rotating shaft remains unchanged. The sealing surface will not directly enter the dust environment and will not be contaminated with dust impurities, which greatly reduces the wear of the sealing surface, extends the service life of the sealing surface, and greatly reduces the risk of leakage.

[0012] Optionally, the linkage mechanism includes a second crank and a push rod; one end of the second crank is fixedly connected to the internal connection position in the circumferential direction about the axis of rotation, the other end of the second crank is hinged to one end of the push rod, and the other end of the push rod is hinged to the discharge rake.

[0013] Optionally, the second crank and the push rod are rotatably connected via a first rotating shaft, the axis of the first rotating shaft being perpendicular to the axis of the second crank and the axis of the push rod, and the axis of the first rotating shaft being perpendicular to the first direction; the push rod and the unloading rake are rotatably connected via a second rotating shaft, the axis of the second rotating shaft being perpendicular to the push rod and the first direction.

[0014] Optionally, the first crank is arranged perpendicular to the rotation axis, and the motion plane of the first crank is arranged parallel to the motion plane of the second crank.

[0015] Optionally, the support cover includes a first cylindrical cover and a second cylindrical cover. One end of the first cylindrical cover is connected to the tower wall, and the tower wall has an opening opposite to one end of the first cylindrical cover. The other end of the first cylindrical wall is closed. The axis of the second cylindrical cover is perpendicular to the axis of the first cylindrical cover, and the second cylindrical cover is embedded in the top of the first cylindrical cover, with a portion of the second cylindrical cover located inside the first cylindrical cover. Both ends of the second cylindrical cover are closed. The rotating shaft is mounted on the end wall of one end of the second cylindrical cover, and the axis of the rotating shaft is parallel to the axis of the second cylindrical cover. The cylindrical wall of the second cylindrical cover located inside the first cylindrical cover has a guide groove for the second crank to pass through, and the guide groove extends circumferentially around the axis of the second cylindrical cover.

[0016] Alternatively, the support cover may include a third cylindrical cover, one end of which is connected to the tower wall, and the end of the third cylindrical cover facing the tower wall is connected to the tower wall, and the rotating shaft is mounted on the side wall of the third cylindrical cover adjacent to the tower wall.

[0017] Optionally, the rotating shaft is mounted on the first sidewall via a bearing, and a sealing ring is provided on the side of the bearing facing the inside of the support cover. The sealing ring is sleeved on the rotating shaft, and the outer ring of the sealing ring is fixed to the first sidewall and sealed to the first sidewall. The rotating shaft and the sealing ring are rotatably connected, and the rotating shaft and the sealing ring are sealed to each other.

[0018] Optionally, the rake-type unloading mechanism further includes a drive device, which is connected to the first crank drive and is used to drive the first crank to reciprocate around the axis of rotation.

[0019] Optionally, the driving device includes a cylinder, the end of the piston rod of the cylinder being drivenly connected to the first crank; and the piston rod of the cylinder and the first crank are connected by a connecting rod, one end of the connecting rod being rotatably connected to the end of the first crank away from the rotation axis, the other end of the connecting rod being rotatably connected to the piston rod of the cylinder, the rotation axis between the connecting rod and the first crank being perpendicular to the axis of the first crank, and the rotation axis between the connecting rod and the piston rod of the cylinder being perpendicular to the axis of the first crank.

[0020] Optionally, the support cover further has a second sidewall opposite to the first sidewall, and the second end of the rotating shaft opposite to the first end is mounted on the second sidewall, and the second end of the rotating shaft is rotatably connected and sealed to the second sidewall; the internal connection is located in the middle of the portion of the rotating shaft inside the support cover;

[0021] Alternatively, the other end of the rotating shaft is located within the accommodating space, and the support cover is provided with a support portion for supporting the other end of the rotating shaft, the support portion being rotatably connected to the other end of the rotating shaft.

[0022] Based on the same design concept, this solution also provides a sintering flue gas purification system, including any of the rake-type unloading mechanisms provided by the above technical solutions. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0024] Figure 1 This is a schematic diagram of a rake-type unloading mechanism provided in this embodiment;

[0025] Figure 2 for Figure 1 A schematic diagram of the cross-section along the AA direction;

[0026] Figure 3 This is a schematic diagram of a rake-type unloading mechanism provided in this embodiment.

[0027] Icons: 1-Unloading rake; 2-Tower wall; 3-Support cover; 4-Rotating shaft; 5-First crank; 6-Connecting rod mechanism; 7-Bearing; 8-Sealing ring; 9-Connecting rod; 31-First cylinder cover; 32-Second cylinder cover; 33-Third cylinder cover; 61-Second crank; 62-Push rod. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0029] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0030] This utility model provides a rake-type unloading mechanism. For ease of explanation, the first direction is defined as a direction within the horizontal plane, and the direction perpendicular to the horizontal plane is defined as the vertical direction. This rake-type unloading structure can be installed in both the adsorption tower and the desorption tower in the sintering flue gas purification process to evenly distribute the activated carbon. Specifically, each of the adsorption tower and the desorption tower includes a tower body for operation, surrounded by tower walls, and has an internal storage space.

[0031] refer to Figure 1 and Figure 2As shown, the rake-type unloading mechanism of this embodiment includes: an unloading rake 1, a support cover 3, and a transmission mechanism. The unloading rake 1 is disposed inside the tower, and a bracket for supporting the unloading rake 1 is provided inside the tower. The unloading rake 1 can be installed inside the tower via the bracket, and the unloading rake 1 is movably mounted on the bracket along a first direction. The support cover 3 is disposed outside the tower and connected to the tower wall 2, protruding outwards from the tower wall 2. The support cover 3 is a cover with an open opening. The tower wall 2 has an opening corresponding to the support cover 3, and the open opening of the support cover 3 is opposite to this opening. The periphery of the open opening of the support cover 3 is sealed to the periphery of the opening of the tower wall 2. The accommodating space inside the support cover 3 communicates with the space inside the tower to form the tower interior space, and the support cover 3 is fixed to the tower wall 2. The transmission mechanism is connected to the unloading rake 1. For example, the transmission mechanism includes: a rotating shaft 4, a first crank 5, and a connecting rod mechanism 6. The rotating shaft 4 passes through... The first sidewall of the support cover 3 is rotatably mounted on the first sidewall. The rotating shaft 4 has a first end and a second end. The first end of the rotating shaft 4 is located outside the tower, and the second end of the rotating shaft 4 is located inside the tower. The rotating shaft 4 is sealed to the first sidewall and rotates in a sealed manner. The axis of the rotating shaft 4 is perpendicular to the first direction. The first end of the rotating shaft 4 is fixedly connected to the first crank 5. The first end of the rotating shaft 4 and the first crank 5 are located outside the first sidewall. The second end of the rotating shaft 4 extends into the receiving space of the support cover. The part of the rotating shaft located in the receiving space forms an internal connection position at a certain point. The unloading rake 1 is connected to the internal connection position of the rotating shaft 4 through the linkage mechanism 6. Both the linkage mechanism 6 and the unloading rake 1 are in the space inside the tower. When the rotating shaft 4 rotates, the rotating shaft 4 drives the unloading rake 1 to move in the first direction.

[0032] In the aforementioned rake-type unloading mechanism, part of the rotating shaft is outside the tower, and part is inside the tower. The rotating shaft is rotary-sealed to the first side wall of the support cover. Applying power to the first crank causes the rotating shaft to rotate. The rotation of the rotating shaft drives the unloading rake to move in a first direction via a linkage mechanism. A positive thrust can be applied to the first crank to make the rotating shaft rotate forward, or a negative thrust can be applied to the first crank to make the rotating shaft rotate backward. This allows the unloading rake to reciprocate in the first direction, enabling it to distribute material. The mechanism is simple, reliable, and easy to operate. Furthermore, the rotating shaft and the first side wall of the support cover are rotary-sealed, and the accommodating space of the support cover has an opening opposite to the tower wall. The other side walls are all closed, making the accommodating space connected to the space inside the tower. Relative to the space inside and outside the tower, the position of the sealing surface between the rotating shaft and the support cover remains unchanged, and the rotating shaft and the support cover form a rotary seal. When the unloading rake moves in a straight line, the linear velocity of the sealing surface is very small, and the sealing surface of the rotating shaft only makes rotational contact without moving in the direction of the axis of the rotating shaft. The sealing surface does not enter the tower and will not come into contact with the dust environment or be contaminated with dust and impurities, which greatly reduces the wear on the sealing surface, extends the service life of the sealing surface, ensures the sealing performance of the rotating shaft seal, and reduces the risk of leakage. At the same time, the sealing surface is not exposed outside the tower, avoiding the risk of bringing dust and impurities inside the tower to the outside.

[0033] It should be noted that "clockwise rotation of the first crank" means that the first crank rotates in one direction around the axis of rotation, while "clockwise rotation of the first crank" means that the first crank rotates in the other direction around the axis of rotation, which is opposite to the clockwise direction.

[0034] Therefore, in the above-mentioned rake-type unloading mechanism, the seal between the rotating shaft and the tower wall is a rotary seal. During operation, the linear velocity of the sealing surface is relatively small, and the position of the sealing surface in the direction of the axis of the rotating shaft remains unchanged. The sealing surface will not directly enter the dust environment and will not be contaminated with dust impurities, which greatly reduces the wear of the sealing surface, extends the service life of the sealing surface, and greatly reduces the risk of leakage.

[0035] like Figure 1As shown, in the above-mentioned rake-type unloading mechanism, the linkage mechanism 6 includes a second crank 61 and a push rod 62; one end of the second crank 61 is fixed to the internal connection position of the rotating shaft 4 in the circumferential direction around the axis of the rotating shaft, so that one end of the second crank does not rotate with the rotating shaft. For example, one end of the second crank 61 can be directly fixedly connected to the internal connection position of the rotating shaft 4; the other end of the second crank 61 is hinged to one end of the push rod 62, and the other end of the push rod 62 is hinged to the unloading rake 1. The push rod 62 extends approximately along the first direction. Specifically, the second crank 61 and the push rod 62 are rotatably connected via a first rotating shaft. The second crank 61 and the push rod 62 can rotate relative to each other around the axis of the first rotating shaft. The axis of the first rotating shaft is perpendicular to the axis of the second crank 61 and also perpendicular to the axis of the push rod 62. The axis of the first rotating shaft is perpendicular to the first direction. The push rod 62 and the discharge rake 1 are rotatably connected via a second rotating shaft. The push rod 62 and the discharge rake 1 can rotate relative to each other around the axis of the second rotating shaft. The axis of the second rotating shaft is perpendicular to the push rod 62 and also perpendicular to the first direction. The second rotating shaft is parallel to the first rotating shaft.

[0036] Furthermore, such as Figure 2 As shown, the first crank 5 is perpendicular to the rotating shaft 4, and the plane of motion of the first crank 5 is parallel to the plane of motion of the second crank 61. Specifically, the first crank 5 and the second crank 61 can be arranged parallel to each other, and the extension directions of the first crank 5 and the second crank 61 are opposite. The first crank 5 and the second crank 61 are arranged on opposite sides of the circumference of the rotating shaft 4. Alternatively, the first crank 5 and the second crank 61 can be at a certain angle, as long as it is convenient to apply force to the first crank. This embodiment is not limited to this.

[0037] Based on the aforementioned rake-type unloading mechanism, regarding the structural configuration of the support cover, as one possible implementation method, refer to... Figure 1 and Figure 2As shown, the support cover 3 may include a first cylindrical cover 31 and a second cylindrical cover 32. The first cylindrical cover may be a cylindrical cover extending along its axis, and the second cylindrical cover may be a cylindrical cover extending along its axis. One end of the first cylindrical cover 31 is connected to the tower wall 2, and the tower wall 2 has an opening opposite to one end of the first cylindrical cover 31. The port of the first cylindrical cover 31 facing the tower wall 2 is sealed to the tower wall 2, and the other end of the first cylindrical cover is closed. In addition, the axis of the second cylindrical cover 32 is perpendicular to the axis of the first cylindrical cover 31, and the second cylindrical cover 32 is embedded in the top of the first cylindrical cover 31, with a portion of the second cylindrical cover 32 located inside the first cylindrical cover 31. Furthermore, the fitting connection between the second cylindrical cover 32 and the first cylindrical cover 31 is a sealed connection; both ends of the second cylindrical cover 32 are closed, and the rotating shaft 4 is installed on the end wall of one end of the second cylindrical cover 32. The end wall of one end of the second cylindrical cover forms the first side wall. The axis of the rotating shaft 4 is parallel to the axis of the second cylindrical cover 32. For example, the axis of the rotating shaft 4 can be set to coincide with the axis of the second cylindrical cover 32; the cylindrical wall of the second cylindrical cover 32 located inside the first cylindrical cover 31 has a guide groove for the second crank 61 to pass through. The guide groove extends circumferentially around the axis of the second cylindrical cover 32. The second crank 61 can slide in the guide groove to realize swinging.

[0038] Preferably, both the first and second cylindrical covers can be cylindrical covers, or both the first and second cylindrical covers can be square cylindrical covers.

[0039] Regarding the structural design of the support cover, as another possible implementation, such as Figure 3 As shown, the support cover can be configured as a single third cylindrical cover 33. One end of the third cylindrical cover 33 is connected to the tower wall, and the interior of the third cylindrical cover forms a closed receiving space. The end of the third cylindrical cover facing the tower wall is connected to the tower wall. The rotating shaft is installed on the side wall of the third cylindrical cover adjacent to the tower wall, and this side wall constitutes the first side wall. Preferably, the third cylindrical cover can be a cylindrical cover, or it can be a square cylindrical cover.

[0040] It should be noted that there are multiple options for the specific design of the support cover. The shape and structure of the support cover can be set according to actual needs, and this embodiment is not limited to this.

[0041] To reduce the rotational friction of the rotating shaft, refer to Figure 2 As shown, the rotating shaft 4 is mounted on the first side wall via a bearing 7. For example, the bearing can be a deep groove ball bearing. A sealing ring 8 is provided on the side of the bearing 7 facing the inside of the support cover, and the sealing ring 8 is sleeved on the outer periphery of the rotating shaft 4. The outer ring of the sealing ring 8 is fixed to the first side wall and sealed to the first side wall. The rotating shaft 4 and the sealing ring 8 are rotatably connected, and the rotating shaft 4 and the sealing ring 8 are sealed to ensure the sealing of the rotating shaft 4 at the mounting point on the first side wall, so that the inside of the tower is isolated from the outside of the tower.

[0042] On the other hand, there are multiple options for the driving method that drives the rotating shaft to rotate. One such method is the rake-type unloading mechanism, which includes a driving device connected to the first crank 5 for reciprocating oscillation around the axis of the rotating shaft 4. Specifically, refer to... Figure 1 As shown, the drive device includes a cylinder, and the end of the piston rod of the cylinder is drively connected to the first crank 5. Exemplarily, the piston rod of the cylinder and the first crank 5 are connected by a connecting rod 9. One end of the connecting rod 9 is rotatably connected to the end of the first crank 5 away from the rotation axis 4, and the other end of the connecting rod 9 is rotatably connected to the piston rod of the cylinder. The axis of rotation between the connecting rod 9 and the first crank 5 is perpendicular to the axis of rotation of the first crank 5.

[0043] Another way to drive the rotating shaft is to do so manually. Specifically, refer to... Figure 2 As shown, it can be operated manually. The first crank 5 is pushed manually to make the first crank 5 rotate, which in turn drives the rotating shaft 4 to rotate.

[0044] Based on the above-mentioned rake-type unloading mechanism, in order to increase the installation stability of the rotating shaft on the support cover and enhance the bending resistance of the rotating shaft, supports need to be provided on both sides of the internal connection position of the rotating shaft. Specifically, the support cover also has a second sidewall opposite to the first sidewall. The second end of the rotating shaft opposite to the first end is installed on the second sidewall, and the second end of the rotating shaft is rotatably connected and sealed to the second sidewall. The internal connection position (the connection point between the rotating shaft and the second crank) is located in the middle of the part of the rotating shaft inside the support cover. Rotary supports are provided on both sides of the connection point between the second crank and the rotating shaft, which makes the installation stability of the rotating shaft better. When the torque generated during unloading is large, the rotating shaft can have greater bending resistance.

[0045] Preferably, the second end of the rotating shaft can also penetrate through the second sidewall, and the rotating shaft and the second sidewall are rotatably connected and sealed. Specifically, a bearing is provided between the rotating shaft and the second sidewall to achieve rotatable connection, and a sealing ring is also provided on the side of the bearing facing the second sidewall to achieve sealed connection; or, the inner side of the second sidewall is provided with a mounting groove opposite to the second end of the rotating shaft. The mounting groove is a blind groove, and the second end of the rotating shaft can be installed in the mounting groove through the bearing to achieve rotatable connection with the mounting groove, so that the rotating shaft can rotate around its own axis.

[0046] As another way to support the second end of the rotating shaft, the other end of the rotating shaft can be located within the receiving space. A support part for supporting the other end of the rotating shaft is provided inside the support cover. This support part can be a support frame, which is rotatably connected to the other end of the rotating shaft, allowing the rotating shaft to rotate around itself and providing good support for the other end of the rotating shaft, improving the bending resistance of the rotating shaft. When the torque generated during unloading is large, it ensures that the rotating shaft has sufficient bending resistance to maintain normal operation.

[0047] Based on the same design concept, this embodiment also provides a sintering flue gas purification system, including any of the rake-type unloading mechanisms provided in the above embodiments. Specifically, the sintering flue gas purification system includes an adsorption tower and a desorption tower. The adsorption tower includes a rake-type unloading mechanism, and the desorption tower also includes a rake-type unloading mechanism.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rake-type unloading mechanism, characterized in that, include: A discharge rake, which is movably mounted inside the tower along a first direction; A support cover is connected to the tower wall and protrudes outward from the tower wall. The accommodating space inside the support cover is connected to the space inside the tower to form the space inside the tower. A transmission mechanism connected to the unloading rake includes a rotating shaft, a first crank, and a connecting rod mechanism. The rotating shaft passes through a first sidewall on one side of the support cover and is rotatably mounted on the first sidewall around its own axis. The rotating shaft and the first sidewall are sealed together, and the axis of the rotating shaft is perpendicular to the first direction. The first end of the rotating shaft is fixedly connected to the first crank. Both the first end of the rotating shaft and the first crank are located outside the first sidewall. The second end of the rotating shaft extends into the receiving space. An internal connection position is formed at the part of the rotating shaft located in the receiving space. The unloading rake is connected to the internal connection position through the connecting rod mechanism. When the rotating shaft rotates, it drives the unloading rake to move along the first direction.

2. The rake-type unloading mechanism according to claim 1, characterized in that, The linkage mechanism includes a second crank and a push rod; one end of the second crank is fixedly connected to the internal connection position in the circumferential direction around the axis of rotation, the other end of the second crank is hinged to one end of the push rod, and the other end of the push rod is hinged to the unloading rake.

3. The rake-type unloading mechanism according to claim 2, characterized in that, The second crank and the push rod are rotatably connected via a first rotating shaft. The axis of the first rotating shaft is perpendicular to the axis of the second crank and the axis of the push rod, and the axis of the first rotating shaft is perpendicular to the first direction. The push rod and the unloading rake are rotatably connected via a second rotating shaft. The axis of the second rotating shaft is perpendicular to the push rod and the first direction.

4. The rake-type unloading mechanism according to claim 2, characterized in that, The first crank is perpendicular to the rotation axis, and the motion plane of the first crank is parallel to the motion plane of the second crank.

5. The rake-type unloading mechanism according to claim 2, characterized in that, The support cover includes a first cylindrical cover and a second cylindrical cover. One end of the first cylindrical cover is connected to the tower wall, and the tower wall has an opening opposite to one end of the first cylindrical cover. The other end of the first cylindrical cover is closed. The axis of the second cylindrical cover is perpendicular to the axis of the first cylindrical cover, and the second cylindrical cover is embedded in the top of the first cylindrical cover, with a portion of the second cylindrical cover located inside the first cylindrical cover. Both ends of the second cylindrical cover are closed. The rotating shaft is mounted on the end wall of one end of the second cylindrical cover, and the axis of the rotating shaft is parallel to the axis of the second cylindrical cover. The cylindrical wall of the second cylindrical cover located inside the first cylindrical cover has a guide groove for the second crank to pass through, and the guide groove extends circumferentially around the axis of the second cylindrical cover. Alternatively, the support cover may include a third cylindrical cover, one end of which is connected to the tower wall, and the end of the third cylindrical cover facing the tower wall is connected to the tower wall, and the rotating shaft is mounted on the side wall of the third cylindrical cover adjacent to the tower wall.

6. The rake-type unloading mechanism according to claim 1, characterized in that, The rotating shaft is mounted on the first side wall via a bearing. A sealing ring is provided on the side of the bearing facing the inside of the support cover. The sealing ring is sleeved on the rotating shaft. The outer ring of the sealing ring is fixed to the first side wall and sealed to the first side wall. The rotating shaft and the sealing ring are rotatably connected and sealed to each other.

7. The rake-type unloading mechanism according to any one of claims 1-6, characterized in that, It also includes a drive device, which is connected to the first crank drive and is used to drive the first crank to oscillate back and forth around the axis of rotation.

8. The rake-type unloading mechanism according to claim 7, characterized in that, The driving device includes a cylinder, the end of which is connected to the first crank in a transmission connection; and the piston rod of the cylinder and the first crank are connected by a connecting rod, one end of which is rotatably connected to the end of the first crank away from the rotation axis, and the other end of which is rotatably connected to the piston rod of the cylinder. The axis of rotation between the connecting rod and the first crank is perpendicular to the axis of rotation of the first crank, and the axis of rotation between the connecting rod and the piston rod of the cylinder is perpendicular to the axis of rotation of the first crank.

9. The rake-type unloading mechanism according to any one of claims 1-6, characterized in that, The support cover also has a second sidewall opposite to the first sidewall, the second end of the rotating shaft is mounted on the second sidewall, and the second end of the rotating shaft is rotatably connected and sealed to the second sidewall; the internal connection position is located in the middle of the portion of the rotating shaft inside the support cover; Alternatively, the other end of the rotating shaft is located within the accommodating space, and the support cover is provided with a support portion for supporting the other end of the rotating shaft, the support portion being rotatably connected to the other end of the rotating shaft.

10. A sintering flue gas purification system, characterized in that, Includes the rake-type unloading mechanism as described in any one of claims 1-9.

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