A cyclone pre-treated sintered plate dust collector

Abstract

The present invention relates to the field of dust removal equipment, and in particular to a sintered plate dust collector with cyclone pretreatment, comprising a tank body, a cyclone mechanism is arranged at the bottom of the tank body, and an ash hopper is arranged at the bottom of the cyclone mechanism; the cyclone mechanism comprises an upper cover plate and a lower cover plate, and a spiral belt is arranged between the upper cover plate and the lower cover plate, and the cyclone mechanism is located at the outer end of the spiral belt and is sealed with an air inlet pipe, the inner end arc of the spiral belt is connected to a partition, and the end of the partition is connected to an arc plate in the reverse arc. The device pre-treats the exhaust gas by integrating a disc-shaped cyclone mechanism at the bottom of the sintered dust collector, concentrates impurity particles on the arc-shaped inner wall of the spiral belt by centrifugal force, and diverts a small amount of dust-containing airflow close to the arc-shaped inner wall of the spiral belt from the overall airflow through a guide plate and re-enters the cyclone mechanism for circulation, so that the device can obtain high exhaust gas pre-treatment dust removal performance with a relatively small volume.

Description

Technical Field

[0001] The invention relates to the field of dust removal equipment, in particular to a sintered plate dust collector with cyclone pretreatment. Background Art

[0002] A sintered plate dust collector is a filtering device that uses sintered material as a filter element. Sintered plate dust collector is a general term, in which the sintered filter element is not limited to plate shape. It is mainly used to remove particulate matter in exhaust gas. Although the sintered plate dust collector can also remove dust through backblowing and can be dismantled, cleaned and reused, the backblowing effect is limited and the disassembly, cleaning and maintenance are also cumbersome. Therefore, sintered plate dust collectors are generally not used independently. Their front stage will be used in conjunction with a cyclone separator, which will quickly remove most of the impurities first. Since there is no filter element inside the cyclone separator, clogging problems will almost never occur. Therefore, while improving the filtering effect, the working cycle of the sintered plate dust collector can be extended.

[0003] The pre-cyclone separator used in the existing sintered plate dust collector is an independent device. In order to achieve the ideal dust removal effect, the cyclone separator occupies a large space. The comprehensive purchase and use and maintenance costs of the equipment are high. The occupation of the limited working space in the factory also increases the hidden cost. Therefore, a sintered plate dust collector with a cyclone pretreatment and a simpler and more compact structure is proposed. Summary of the invention

[0004] In view of the problem that the use of a front-stage cyclone filter device in the sintered plate dust collector mentioned above or in the prior art leads to high use and maintenance costs, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a cyclone pre-treated sintered plate dust collector.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a sintered plate dust collector with cyclone pretreatment, comprising a tank body, a cyclone mechanism is arranged at the bottom of the tank body, and an ash hopper is arranged at the bottom of the cyclone mechanism; the cyclone mechanism comprises an upper cover plate and a lower cover plate, and a spiral belt is arranged between the upper cover plate and the lower cover plate, the cyclone mechanism is located at the outer end of the spiral belt and is sealed with an air inlet pipe, the inner end arc of the spiral belt is connected with a partition, and the end of the partition is connected with an arc plate in the opposite arc, the upper cover plate is located between the arc plate and the partition and has a clean air outlet, and the lower cover plate is located between the partition and the spiral belt and has a dust air outlet, the end of the arc plate is provided with a guide plate, and the guide plate is biased to the side of the inner arc wall of the spiral belt.

[0007] As a preferred solution of the sintered plate dust collector with cyclone pretreatment of the present invention, the clean air outlet of the upper cover plate is connected to the bottom of the tank body, and the dust air outlet of the lower cover plate is connected to the ash hopper, and a centrifugal fan is connected between the ash hopper and the air inlet pipe.

[0008] As a preferred solution of the sintered plate dust collector for cyclone pretreatment of the present invention, a first baffle is provided at the bottom of the tank body, and the first baffle is inclined, a cutout is provided at the top of the first baffle, and a second baffle is provided on the upper part of the cutout to match and cover the cutout, a side strip is provided at the edge of the second baffle, and the edge of the side strip is in contact with and overlaps the upper surface of the first baffle.

[0009] As a preferred solution of the sintered plate dust collector for cyclone pretreatment of the present invention, a dust discharge window is provided on the peripheral wall of the tank body at the bottom of the first baffle, and a sintered filter element is provided in the tank body at the upper part of the first baffle.

[0010] As a preferred solution of the sintered plate dust collector with cyclone pretreatment of the present invention, the air inlet end of the centrifugal fan is connected with an air inlet hood, and the air inlet hood is arranged in the ash hopper, and the air inlet opening of the air inlet hood is inclined toward the upper edge of the inner wall of the ash hopper.

[0011] As a preferred solution of the sintered plate dust collector for cyclone pretreatment of the present invention, the upper cover plate and the lower cover plate are parallel to each other, and the arc plate is hinged to the guide plate.

[0012] As a preferred solution of the sintered plate dust collector with cyclone pretreatment of the present invention, wherein: the lower cover plate is provided with an inspection cover at the guide plate, and the inspection cover is located in the centrifugal wind mechanism and is vertically connected to a connecting rod, the connecting rod is rotatably connected to a pressing plate, and a torsion spring is pre-compressed between the pressing plate and the connecting rod, and one end of the torsion spring presses the pressing plate against one side of the guide plate.

[0013] As a preferred solution of the sintered plate dust collector with cyclone pretreatment of the present invention, the torsion springs are symmetrically arranged in a pair about the pressing plate, and the upper edge and the lower edge of the guide plate are both provided with folded edges in the direction away from the pressing plate.

[0014] As a preferred solution of the sintered plate dust collector with cyclone pretreatment of the present invention, the pressing plate is arranged between the inner arc wall of the spiral belt and the guide plate, and the inspection cover is located on the other side of the guide plate and is also connected with a limiting screw, and the guide plate is deflected so that its edge overlaps the limiting screw.

[0015] As a preferred solution of the sintered plate dust collector with cyclone pretreatment of the present invention, the inner side of the cover plate is provided with grooves in a ring array about the connecting rod, and a positioning ring is coaxially sleeved on the peripheral wall of the connecting rod, the positioning ring is matched and engaged with the groove, and the outer side of the inspection cover is provided with screws to fasten it to the end of the connecting rod.

[0016] The beneficial effects of the sintered plate dust collector with cyclone pretreatment of the present invention are as follows: the device pretreats the exhaust gas by integrating a disc-shaped cyclone mechanism at the bottom of the sintered dust collector, concentrates the impurity particles on the curved inner wall of the spiral belt by centrifugal force, and diverts a small amount of dust-containing airflow close to the curved inner wall of the spiral belt from the overall airflow through the guide plate and re-enters the cyclone mechanism for circulation, so that the device can achieve high exhaust gas pretreatment dust removal performance with a relatively small volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 Schematic diagram of the overall structure of the sintered plate dust collector for cyclone pretreatment.

[0019] Figure 2 A half-section view of the tank of a sintered plate dust collector for cyclone pretreatment.

[0020] Figure 3 For cyclone pretreatment of sintered plate dust collector Figure 2 Schematic diagram of the structure after removing the sintered filter element.

[0021] Figure 4 Structural cross-sectional view of the ash hopper of the sintered plate dust collector for cyclone pretreatment.

[0022] Figure 5 A structural cross-sectional view of the cyclone mechanism of a sintered plate dust collector for cyclone pretreatment.

[0023] Figure 6 For cyclone pretreatment of sintered plate dust collector Figure 5 Schematic diagram of the structure after further sectioning.

[0024] Figure 7 For cyclone pretreatment of sintered plate dust collector Figure 6 A is an enlarged view of the structure.

[0025] Figure 8 For cyclone pretreatment of sintered plate dust collector Figure 7 Schematic diagram of the structure from the other side of the center guide plate.

[0026] Fig. 9 Structural dissection diagram of the inspection cover of the sintered plate dust collector for cyclone pretreatment.

[0027] In the figure: 100, tank body; 101, first baffle; 102, second baffle; 103, ash discharge window; 104, sintered filter element; 102a, side strip; 200, cyclone mechanism; 201, upper cover plate; 202, lower cover plate; 203, spiral belt; 204, air inlet pipe; 205, partition; 206, arc plate; 207, guide plate; 208, inspection cover; 209, connecting rod; 210, pressing plate; 211, torsion spring; 212, limit screw; 201a, clean air outlet; 202a, dust air outlet; 208a, slot; 209a, positioning ring; 300, ash hopper; 301, centrifugal fan; 302, air inlet hood. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Example 1, reference Figure 1 to Figure 9 , which is the first embodiment of the present invention, and provides a sintered plate dust collector with cyclone pretreatment, which can achieve the effect of cyclone pretreatment and dust removal of the sintered plate dust collector with a relatively simple and compact structure, and comprises a tank body 100, a cyclone mechanism 200 is arranged at the bottom of the tank body 100, and an ash hopper 300 is arranged at the bottom of the cyclone mechanism 200; the cyclone mechanism 200 comprises an upper cover plate 201 and a lower cover plate 202, and a spiral belt 203 is arranged between the upper cover plate 201 and the lower cover plate 202, and the cyclone mechanism 200 is located at the outer end of the spiral belt 203 and is sealed with an air inlet pipe 204, and the inner end arc of the spiral belt 203 is connected to a partition plate 205, and the end of the partition plate 205 is reversed. The arc is connected with an arc plate 206, the upper cover plate 201 is located between the arc plate 206 and the partition plate 205 and is provided with a clean air outlet 201a, and the lower cover plate 202 is located between the partition plate 205 and the spiral belt 203 and is provided with a dust air outlet 202a, the clean air outlet 201a of the upper cover plate 201 is connected with the bottom of the tank body 100, and the dust air outlet 202a of the lower cover plate 202 is connected with the ash hopper 300, a centrifugal fan 301 is connected between the ash hopper 300 and the air inlet pipe 204, the air inlet end of the centrifugal fan 301 is connected with an air inlet hood 302, and the air inlet hood 302 is arranged in the ash hopper 300, and the air inlet opening of the air inlet hood 302 is inclined toward the upper edge of the inner wall of the ash hopper 300.

[0030] The working principle and advantages of the device are further explained in combination with the prior art: the present invention integrates the function of cyclone separation in the sintered plate dust collector, but is different from the existing cyclone separator, which is vertically installed in an inverted cone shape with a thick top and a thin bottom, and is relatively slender in shape. The exhaust gas enters the cyclone separator tangentially through the top and moves downward in a spiral. The centrifugal force causes the particles to move to the inner wall of the cyclone separator and eventually fall into the dust collecting box at the bottom. The dust-free exhaust gas returns from the middle and is discharged upward. Obviously, except for the dust discharge port of the dust collecting box, the existing cyclone separator generally has only two working interfaces, namely, air intake and exhaust. The exhaust gas passes through the equipment at one time. If the air intake velocity is low, the separation effect will be weakened, and relatively high requirements are placed on the air pressure range of the pipeline of the assembly line. It may even be necessary to install additional boosting equipment, and the overall power consumption is also relatively high.

[0031] The sintered plate dust collector provided by the present invention has a disc-shaped cyclone mechanism 200 integrated at its bottom, which mainly provides a spiral path structure and an active diversion function. The exhaust gas flowing through the spiral belt 203 generates centrifugal force to move the impurity particles toward the curved inner wall of the spiral belt 203, and as it moves toward the inside of the cyclone mechanism 200, the spiral radius becomes smaller and smaller, and the centrifugal force on the impurity particles in the exhaust gas increases, reaching the diversion area in the middle of the cyclone mechanism 200. Under the auxiliary guidance of the guide plate 207, the dust-laden airflow flowing close to the curved inner wall of the spiral belt 203 is diverted by the guide plate 207 and guided to the dust and air outlet 202a of the lower cover plate 202, while the other part of the dust-free airflow at a certain distance from the curved inner wall of the spiral belt 203 is diverted by the guide plate 207 and guided to the clean air outlet 201a of the upper cover plate 201.

[0032] The dust-laden airflow is discharged downward from the dust-air outlet 202a into the ash hopper 300. Since the space inside the ash hopper 300 is relatively large, the dust-laden airflow slows down and diffuses, and most of the impurity particles settle. Since the ash hopper 300 needs to be kept sealed when the equipment is working, and the cyclone mechanism 200 continuously sends the dust-laden airflow into the ash hopper 300, and the dust-laden airflow entering the ash hopper 300 eventually needs to be processed by the sintered filter element 104, the tail gas in the ash hopper 300 is pumped back into the air inlet pipe 204 through a low-power centrifugal fan 301, and is mixed with the unprocessed tail gas and enters the cyclone mechanism 200 again. To achieve the above purpose, two conditions need to be met. First, the pressure in the pipeline is that the exhaust pressure of the centrifugal fan 301 is greater than the intake pressure of the intake pipe 204, and the intake pressure of the intake pipe 204 is greater than the pressure in the ash hopper 300 and the tank body 100. Second, the air inlet of the centrifugal fan 301 located inside the ash hopper 300 is connected through the air inlet hood 302, which not only changes the air intake direction but also reduces the air flow speed of the air inlet. Therefore, this semi-closed method is used to prevent the dust-laden airflow entering the ash hopper 300 from being directly sucked into the centrifugal fan 301. Of course, when there is a lot of dust in the ash hopper 300, it needs to be discharged and cleaned in time.

[0033] The centrifugal fan 301 is an indispensable process link, but the power requirement for the centrifugal fan 301 in the present invention is extremely low, which is one of the advantages achieved by the guide plate 207. The guide plate 207 pre-diverts a small amount of dust-containing airflow close to the curved inner wall of the spiral belt 203 from the overall airflow, so that the flow rate entering the ash hopper 300 is greatly reduced, which not only helps the impurity particles to settle in the ash hopper 300, but also helps to select a smaller and lower-power centrifugal fan 301, thereby saving equipment costs. Please refer to Example 3 for the specific working principle of the guide plate 207.

[0034] In summary, the device pre-treats the exhaust gas by integrating a disc-shaped cyclone mechanism 200 at the bottom of the sintering dust collector, concentrates the impurity particles on the curved inner wall of the spiral belt 203 through centrifugal force, and diverts a small amount of dust-containing airflow close to the curved inner wall of the spiral belt 203 from the overall airflow through the guide plate 207 and re-circulates it into the cyclone mechanism 200, so that the device can achieve high exhaust gas pre-treatment dust removal performance with a relatively small volume.

[0035] Example 2, reference Figure 2 and Figure 3 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a baffle structure in the tank body 100 of the sintered plate dust collector with cyclone pretreatment, so that there is no interference between the back-blowing dust removal operation of the cyclone mechanism 200 and the sintered filter element 104, which includes: a first baffle 101 is arranged at the bottom of the tank body 100, and the first baffle 101 is arranged in an inclined manner, a cutout is arranged on the top of the first baffle 101, and the upper part of the cutout is matched and covered with a second baffle 102, an edge of the second baffle 102 is provided with a side strip 102a, and the edge of the side strip 102a is in contact with the upper surface of the first baffle 101, a dust discharge window 103 is opened on the peripheral wall of the tank body 100 at the bottom of the first baffle 101, and a sintered filter element 104 is arranged in the tank body 100 at the upper part of the first baffle 101.

[0036] Since the sintered plate dust collector needs to be dusted by backblowing, the ash hopper 300 is generally installed at the bottom of the tank body 100. However, since the present invention integrates the cyclone mechanism 200, the dust accumulation in the tank body 100 needs to be redesigned. The ash discharge method cannot be greatly changed to the original tank body 100 structure, otherwise the equipment R&D and production costs will be significantly increased. The present invention solves this technical problem through the first baffle 101 and the second baffle 102. Figure 3When the device is working normally, the pre-treated exhaust gas first enters the space between the first baffle 101, the second baffle 102 and the bottom of the tank body 100, and then pushes the edge strip 102a (thin silicone or thin rubber material) on the edge of the second baffle 102 to enter the part of the tank body 100 located at the sintered filter element 104. When the sintered filter element 104 needs to be back-blown, the exhaust gas intake needs to be stopped first, and then after the wind pressure is lost, the edge of the edge strip 102a falls and fits the first baffle 101. 01. Backblowing causes the sintered filter element 104 in the tank body 100 to partially increase the pressure, which will cause the side strip 102a to tend to squeeze into the ventilation gap between the second baffle 102 and the first baffle 101, and will cause the side strip 102a to press the first baffle 101 more tightly to prevent dust from entering the interior and causing secondary pollution. The dust blown down by the backblowing falls on the inclined second baffle 102 and the first baffle 101 and slides down to the lower ash discharge window 103 for discharge (it can also be discharged with the help of vibration equipment or manual ash removal).

[0037] The rest of the structure is the same as that of Example 1.

[0038] In summary, the device solves the problem of interference of the cyclone mechanism 200 with the back-blowing dust removal operation of the sintered filter element 104 through the simple layout and design of the first baffle 101 and the second baffle 102 .

[0039] Example 3, reference Figure 5~Figure 9, which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a guide plate 207 for a sintered plate dust collector with cyclone pretreatment. The guide plate 207 is adapted to the gas flow rate in the cyclone mechanism 200 to achieve the effect of efficient separation of dust-free airflow and dusty airflow. The guide plate 207 is arranged at the end of the arc plate 206, and the guide plate 207 is biased to the inner arc wall side of the spiral belt 203. The upper cover plate 201 and the lower cover plate 202 are parallel to each other. The arc plate 206 and the guide plate 207 are hinged. The lower cover plate 202 is provided with an inspection cover 208 at the guide plate 207, and the inspection cover 208 is located in the centrifugal fan 301 and is vertically connected to a connecting rod 209. The connecting rod 209 is rotatably connected to a pressing plate 210, and there is a pressure plate 210 between the pressing plate 210 and the connecting rod 209. A torsion spring 211 is pre-loaded, and one end of the torsion spring 211 presses the pressing plate 210 against one side of the guide plate 207. A pair of torsion springs 211 are symmetrically arranged about the pressing plate 210. The upper edge and the lower edge of the guide plate 207 are both provided with folded edges in the direction away from the pressing plate 210. The pressing plate 210 is arranged between the inner arc wall of the spiral belt 203 and the guide plate 207, and the inspection cover 208 is located on the other side of the guide plate 207 and is also connected with a limiting screw 212. The guide plate 207 is deflected and its edge overlaps the limiting screw 212. A card slot 208a is arranged in an annular array on the inner side of the cover plate about the connecting rod 209, and a positioning ring 209a is coaxially sleeved on the peripheral wall of the connecting rod 209. The positioning ring 209a is matched and clamped with the card slot 208a, and a screw is arranged on the outer side of the inspection cover 208 to fasten it to the end of the connecting rod 209.

[0040] refer to Figure 7 and Figure 8 First, the working mode of the guide plate 207 is explained. When there is no airflow passing through the guide plate 207, the edge of the guide plate 207 overlaps with the limit screw 212 under the thrust of the torsion spring 211 driving the pressing plate 210. When overlapping, the guide plate 207 is still in a state of being biased toward the arc-shaped inner wall of the spiral belt 203. This makes it so that when airflow passes through, the airflow acts on the guide plate 207 and generates a component force due to the deflection angle of the guide plate 207. When the flow rate of the airflow is large enough, it will overcome the elastic force of the torsion spring 211 and further push the guide plate 207 to deflect in the direction of the arc-shaped inner wall of the spiral belt 203 until it reaches balance again.

[0041] Therefore, when the intake pressure is high and the air flow velocity is fast, a higher centrifugal force can be generated, which will cause the dust to be more concentrated close to the curved inner wall of the spiral belt 203. At the same time, the guide plate 207 will also increase the deflection angle toward the curved inner wall of the spiral belt 203, and the edge of the guide plate 207 will be closer to the curved inner wall of the spiral belt 203, so as to avoid the low-dust airflow from being diverted to the dust and wind outlet 202a as much as possible, thereby realizing dynamic diversion, which not only ensures that the cyclone mechanism 200 outputs low-dust pre-treated exhaust gas to the tank body 100, but also improves work efficiency.

[0042] Obviously, the balance between the deflection angle of the guide plate 207 and the airflow velocity is highly dependent on the torque of the torsion spring 211. Therefore, the torsion spring 211 has an additional adjustment function. The pressure of the torsion spring 211 on the pressure plate 210 and the guide plate 207 is adjusted by rotating the connecting rod 209 to adjust the position of one end of the torsion spring 211, and the connecting rod 209 is tightened by screws so that the positioning ring 209a is inserted into the slot 208a to achieve positioning.

[0043] The rest of the structure is the same as that of Example 2.

[0044] In summary, the guide plate 207 of the device can not only realize dynamic diversion according to the exhaust gas flow rate to improve the dust removal efficiency of the cyclone mechanism 200, but also facilitate debugging.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sintered plate dust collector for cyclone pretreatment, characterized in that: It comprises a tank body (100), a cyclone mechanism (200) is arranged at the bottom of the tank body (100), and an ash hopper (300) is arranged at the bottom of the cyclone mechanism (200); The cyclone mechanism (200) comprises an upper cover plate (201) and a lower cover plate (202), wherein a spiral belt (203) is arranged between the upper cover plate (201) and the lower cover plate (202), an air inlet pipe (204) is sealedly arranged at the outer end of the spiral belt (203) of the cyclone mechanism (200), the inner end arc of the spiral belt (203) is connected to a partition plate (205), and the end of the partition plate (205) is connected to a reverse arc. The arc-shaped plate (206), the upper cover plate (201) is located between the arc-shaped plate (206) and the partition plate (205) and is provided with a clean air outlet (201a), and the lower cover plate (202) is located between the partition plate (205) and the spiral belt (203) and is provided with a dust air outlet (202a), and a guide plate (207) is provided at the end of the arc-shaped plate (206), and the guide plate (207) is biased towards a side of the inner arc wall of the spiral belt (203); The clean air outlet (201a) of the upper cover plate (201) is in communication with the bottom of the tank body (100), and the dust air outlet (202a) of the lower cover plate (202) is in communication with the ash hopper (300), and a centrifugal fan (301) is connected between the ash hopper (300) and the air inlet pipe (204); A first baffle (101) is provided at the bottom of the tank body (100), and the first baffle (101) is arranged in an inclined manner; a cutout is provided at the top of the first baffle (101), and a second baffle (102) is provided on the upper part of the cutout to match and cover the cutout; a side strip (102a) is provided at the edge of the second baffle (102), and the edge of the side strip (102a) fits and overlaps the upper surface of the first baffle (101); A dust discharge window (103) is provided on the peripheral wall of the tank body (100) at the bottom of the first baffle (101), and a sintered filter element (104) is provided in the tank body (100) at the upper part of the first baffle (101); The air inlet end of the centrifugal fan (301) is connected to an air inlet hood (302), and the air inlet hood (302) is arranged in the ash hopper (300), and the air inlet opening of the air inlet hood (302) is inclined toward the upper edge of the inner wall of the ash hopper (300); The upper cover plate (201) and the lower cover plate (202) are parallel to each other, and the arc-shaped plate (206) and the guide plate (207) are hingedly connected; The lower cover plate (202) is provided with an inspection cover (208) at the guide plate (207), and the inspection cover (208) is vertically connected to a connecting rod (209) located in the centrifugal fan (301) structure, the connecting rod (209) is rotatably connected to a pressing plate (210), and a torsion spring (211) is pre-compressed between the pressing plate (210) and the connecting rod (209), and one end of the torsion spring (211) presses the pressing plate (210) against one side of the guide plate (207); A pair of torsion springs (211) are symmetrically arranged with respect to the pressing plate (210), and both the upper edge and the lower edge of the guide plate (207) are provided with folded edges in a direction away from the pressing plate (210); The pressing sheet (210) is arranged between the inner arc wall of the spiral belt (203) and the guide plate (207), and the inspection cover (208) is located on the other side of the guide plate (207) and is also connected to a limit screw (212), and the guide plate (207) is deflected so that its edge overlaps the limit screw (212).

2. The sintered plate dust collector for cyclone pretreatment according to claim 1, characterized in that: The inner side of the cover plate is provided with slots (208a) in an annular array about the connecting rod (209), and a positioning ring (209a) is coaxially sleeved on the peripheral wall of the connecting rod (209), the positioning ring (209a) is matched and clamped with the slots (208a), and the outer side of the inspection cover (208) is provided with screws for fastening with the end of the connecting rod (209).

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