A carbon black screw feeding device for receiving dusty materials

Abstract

The present invention relates to the technical field of material conveying, and specifically, to a carbon black screw feeding device for receiving dusty materials. It includes a storage tank and a feeding pipe arranged at the bottom of the storage tank. A cover plate for sealing is provided at the top end of the storage tank. The feeding pipe is communicated with the bottom of the storage tank. A spiral plate is arranged inside the feeding pipe. An isolation mechanism is arranged inside the storage tank. In this carbon black screw feeding device for receiving dusty materials, by partitioning the inside of the storage tank into two chambers and guiding the airflow from two directions to both sides of the filter element, the pressure inside the filter element is made greater than the pressure at one of the filtration surfaces, thereby realizing the backwashing of the filtration surface. Moreover, through the continuous rotation of the blocking mechanism, the airflow inside the storage tank flows through the two filtration surfaces of the filter element in a successive intermittent manner, thus avoiding the accumulation of dust at the filtration surface of the filter element, slowing down the clogging speed of the filter element, and reducing the flushing frequency of using compressed gas for the filter element.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying, in particular to a carbon black spiral feeding device for receiving dusty materials. Background Art

[0002] Carbon black is a type of amorphous carbon, a light, loose and extremely fine black powder with a very large surface area. It is a black powdery substance formed by incomplete combustion or pyrolysis of hydrocarbons in the gas phase under strictly controlled process conditions. Its main component is carbon and contains small amounts of elements such as oxygen, hydrogen and sulfur.

[0003] Carbon black is in powder form. During the processing, the powdered carbon black is transported to the granulator by the feeding device, and granulation is completed by adding an appropriate amount of granulation premix water in the granulator. The feeding device is usually installed at the front end of the granulator (i.e. the feeding end), and the carbon black raw material is transported to the storage tank in the feeding device by positive pressure air delivery. Specifically, a feeding pipe is set up, one end of the feeding pipe is connected to the storage tank in the feeding device, and the other end is connected to the workshop where the carbon black is stored. The carbon black stored in the workshop is transported to the storage tank by using a fan. At this time, the feeding device can carry out the feeding operation.

[0004] Since carbon black is in powder form, the use of positive pressure air delivery will cause dust to be generated when the carbon black enters the storage tank (that is, part of the carbon black floats in the air under the action of the airflow). The current solution is usually to seal the storage tank and then set up a filter inside the storage tank. The filter intercepts the dust in the storage tank and discharges the air from the storage tank to the outside to avoid excessive air pressure in the storage tank. When the filter is clogged, a gas injection device is set inside the filter to transport compressed gas into the filter and use the pressure difference to clean the filter.

[0005] However, due to excessive dust generated by positive pressure air delivery, the filter will be blocked quickly, and the compressed gas has a high speed and pressure. Frequent impact on the filter will affect the life of the filter. Summary of the invention

[0006] The object of the present invention is to provide a carbon black spiral feeding device for receiving dusty materials to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, a carbon black spiral feeding device for receiving dusty materials is provided, comprising a storage tank and a feeding pipe arranged at the bottom of the storage tank, a cover plate for sealing is arranged at the top of the storage tank, the feeding pipe is connected with the bottom of the storage tank, a spiral plate is arranged in the feeding pipe, and an isolation mechanism is arranged inside the storage tank, the isolation mechanism is used to isolate the internal space of the storage tank, so that two chambers are formed inside the storage tank, and the two chambers can be connected or isolated through the isolation mechanism;

[0008] The side wall of the storage tank is further provided with a first feed inlet communicating with one of the chambers, a second feed inlet communicating with the other chamber, and a diversion and filtration pipeline with a filter element inside; one end of the diversion and filtration pipeline communicates with one of the chambers, and the other end communicates with the other chamber; the inside of the filter element is a hollow structure, and the filter element has two filter surfaces, and the two filter surfaces are arranged corresponding to the two chambers; and an exhaust vent is arranged at a position of the diversion and filtration pipeline corresponding to the internal space of the filter element.

[0009] The isolation mechanism seals one of the chambers, so that the air flow in the other chamber is discharged through the exhaust vent after being filtered by one of the filter surfaces, and the other filter surface is backwashed by the action of the pressure difference during the discharging process.

[0010] As a further improvement of the technical solution, the isolation mechanism includes a partition plate with a material dropping port, and a blocking mechanism rotatably arranged at the bottom of the partition plate. The blocking mechanism blocks the material dropping port during rotation, so that a first chamber and a second chamber are formed inside the storage tank; wherein, the first chamber is located above the partition plate, and the second chamber is located below the partition plate.

[0011] The blocking mechanism includes a shielding part. When the blocking mechanism blocks the material dropping port, the shielding part seals the first feed inlet or the second feed inlet by rotation.

[0012] As a further improvement of the technical solution, the partition plate is composed of two symmetrical plate bodies. A material dropping port is reserved between the two plate bodies. The two plate bodies are both located between the first feed inlet and the second feed inlet and are fixedly connected with the cover plate.

[0013] The outer circle of the plate body corresponds to the radian of the inner wall of the storage tank. At the same time, a gap is reserved between the outer circle of the plate body and the inner wall of the storage tank to provide space for the arrangement of the blocking mechanism.

[0014] As a further improvement of the technical solution, the blocking mechanism includes a baffle plate rotatably arranged below the material dropping port, and a side ring fixedly arranged at the end of the baffle plate.

[0015] The baffle plate is in an "X" shape structure, and the top of the baffle plate fits with the bottom of the partition plate.

[0016] The side ring is located in the gap reserved between the plate body and the storage tank.

[0017] The shielding part includes a first air baffle plate fixedly arranged at the top end of the side ring and a second air baffle plate fixedly arranged at the bottom end of the side ring. The outer walls of the second air baffle plate and the first air baffle plate are both slidably attached to the inner wall of the storage tank.

[0018] The material baffle seals the blanking port by rotating. After the material baffle seals the blanking port, the first air baffle seals the first feeding port or the second air baffle seals the second feeding port.

[0019] As a further improvement of this technical solution, a rotating shaft is fixedly arranged at the top end of the material baffle. The top end of the rotating shaft penetrates through the cover plate and is connected to a second motor arranged on the top of the cover plate.

[0020] As a further improvement of this technical solution, the material baffle includes a first material baffle and a second material baffle whose shapes both correspond to the blanking port. The first material baffle and the second material baffle are cross - arranged to form an "X" - shaped structure;

[0021] The first air baffle is arranged corresponding to one end of the second material baffle, and the second air baffle is arranged corresponding to one end of the first material baffle;

[0022] When the first material baffle seals the blanking port, the first air baffle seals the first feeding port. When the second material baffle seals the blanking port, the second air baffle seals the second feeding port.

[0023] As a further improvement of this technical solution, the diversion and filtration pipeline includes an air pipe with one end communicating with the first chamber and the other end communicating with the second chamber. The exhaust port is arranged on one side of the air pipe;

[0024] The part of the air pipe corresponding to the exhaust port is set as an installation cavity for installing the filter element. The exhaust port is at the top end of the installation cavity; a pressure relief valve is arranged at the exhaust port, which is used to increase the pressure inside the filter element, so as to back - flush the first filtering surface or the second filtering surface under the action of the pressure difference.

[0025] As a further improvement of this technical solution, the shape of the installation cavity corresponds to the shape of the filter element. The filter element is in the shape of a square pipe, and the filter element is installed in the installation cavity through the exhaust port;

[0026] One side of the filter element close to the gas in the first chamber forms a first filtering surface for filtering the gas in the first chamber; one side of the filter element close to the gas in the second chamber forms a second filtering surface for filtering the gas in the second chamber.

[0027] As a further improvement of this technical solution, the pressure relief valve is a pressing plate slidably arranged at the exhaust port. A straight rod longitudinally slidably connected to the pressing plate is fixedly arranged at the part of the air pipe corresponding to the exhaust port. Under normal conditions, the pressing plate seals the exhaust port by covering it and uses its own gravity to block the gas entering the filter element, so as to increase the pressure inside the filter element;

[0028] A vent port with an exhaust gas flow rate less than the gas transmission flow rate of the air pipe is provided at the pressing plate.

[0029] As a further improvement of this technical solution, during the rotation of the baffle plate, it cooperates with the partition plate to intercept the carbon black at the top of the partition plate, so that the intercepted carbon black drops after accumulation.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. In the carbon black spiral feeding device for receiving dusty materials, by dividing the interior of the storage tank into two chambers and guiding the air flow from two directions to both sides of the filter element, the pressure inside the filter element is made greater than the pressure at one of the filter surfaces, thereby realizing the backwashing of the filter surface. Moreover, through the continuous rotation of the blocking mechanism, the air flow in the storage tank flows through the two filter surfaces of the filter element in a successive intermittent manner, thus avoiding the accumulation of dust at the filter surface of the filter element, slowing down the clogging speed of the filter element, and reducing the flushing frequency of using compressed gas for the filter element.

[0032] 2. In the carbon black spiral feeding device for receiving dusty materials, the blocking mechanism can not only guide the gas in the storage tank through isolation, but also intercept the carbon black during the isolation process, so that the intercepted carbon black drops after accumulating for a period of time. The accumulated carbon black will generate a strong impact force on the carbon black at the bottom of the storage tank during the dropping process, thereby changing the state of the carbon black at the bottom of the storage tank and avoiding carbon black blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 is a schematic diagram of the internal structure of the storage tank of the present invention;

[0035] Figure 3 is a schematic diagram of the structure of the blocking mechanism of the present invention;

[0036] Figure 4 is a schematic diagram of the structure of the filter element of the present invention Figure 1 ;

[0037] Figure 5 is a schematic diagram of the structure of the filter element of the present invention Figure 2 ;

[0038] Figure 6 is a schematic diagram of the structure of the first baffle plate of the present invention;

[0039] Figure 7 is a schematic diagram of the gas flow direction in the first chamber of the present invention;

[0040] Figure 8 is a schematic diagram of the gas flow direction in the second chamber of the present invention;

[0041] Figure 9 Schematic of the working state of the blocking mechanism of the present invention Figure 1 ;

[0042] Figure 10 Schematic of the working state of the blocking mechanism of the present invention Figure 2 ;

[0043] Figure 11 Schematic of the working state of the blocking mechanism of the present invention Figure 3 ;

[0044] Figure 12 Schematic of the material blocking state of the partition plate of the present invention;

[0045] Figure 13 Schematic of the structure of the stirring rod of the present invention.

[0046] The meanings of each label in the figure are as follows:

[0047] 100, storage tank; 101, cover plate; 102, vertical pipe; 103, feeding pipe; 104, blanking port; 105, spiral plate; 106, first motor; 107, valve plate; 110, first feeding port; 111, second feeding port; 120, first exhaust port; 121, second exhaust port; 122, air pipe; 123, exhaust port; 124, filter element; 125, framework; 126, pressing plate; 127, air leakage port; 128, straight rod; 129, impact air pipe; 130, partition plate; 131, material falling port; 132, first chamber; 133, second chamber; 140, blocking mechanism; 141, first material blocking plate; 142, second material blocking plate; 143, side ring; 144, first air blocking plate; 145, second air blocking plate; 146, rotating shaft; 147, second motor; 150, stirring rod; 200, feeding pipe. Specific embodiments

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0051] The present invention provides a carbon black spiral feeding device for receiving dusty materials, as Figure 1 shown. The feeding device includes a storage tank 100 and a feeding pipe 103 provided at the bottom of the storage tank 100. The upper half of the storage tank 100 is a cylindrical structure for increasing the storage space, and the lower part is a funnel-shaped structure to facilitate the discharge of carbon black from the bottom of the storage tank 100. Moreover, the top end of the storage tank 100 is a closed structure, specifically, a cover plate 101 is provided at the top of the storage tank 100 to prevent dust from being discharged from the top end.

[0052] The feeding pipe 103 can be set in a horizontal state, a vertical state, an inclined state, etc. For the convenience of understanding, in this embodiment, the feeding pipe 103 is horizontally arranged as a whole. As Figure 1 shown, a vertical pipe 102 is provided at the top of the feeding pipe 103 corresponding to the bottom of the storage tank 100. The bottom end of the storage tank 100 is connected to the feeding pipe 103 through the vertical pipe 102, and one end of the bottom of the feeding pipe 103 has a discharge port 104 for discharging carbon black from the inside of the feeding pipe 103. In the part between the vertical pipe 102 and the discharge port 104, the present invention uses a spiral feeding method to drive the carbon black in the feeding pipe 103. As Figure 2 shown, by providing a spiral plate 105 inside the feeding pipe 103, one end of the spiral plate 105 rotates through one end of the feeding pipe 103 and is connected to a first motor 106, and the first motor 106 can be installed at the end of the feeding pipe 103.

[0053] In this way, under the action of gravity, the carbon black in the storage tank 100 falls into the conveying pipe 103 through the vertical pipe 102. At this time, the first motor 106 drives the spiral plate 105 to rotate, so that the spiral plate 105 pushes the carbon black in the conveying pipe 103 towards the discharge port 104. When the carbon black reaches the discharge port 104, it drops through the discharge port 104. The end of the discharge port 104 can be connected to a granulator. In this way, after passing through the discharge port 104, the carbon black will directly enter the granulator, thus entering the granulation process and completing the feeding operation.

[0054] It should be understood that to achieve the control of feeding, as Figure 2 shown, a valve plate 107 can also be rotatably arranged in the vertical pipe 102, and the valve plate 107 is connected to a driving motor (refer to Figure 1 ) arranged outside the vertical pipe 102. By rotating the valve plate 107, the internal space of the vertical pipe 102 is changed to intercept the carbon black, so as to achieve the control of feeding.

[0055] As Figure 2 and Figure 3 shown, an isolation mechanism is arranged inside the storage tank 100. The isolation mechanism is used to isolate the internal space of the storage tank 100, so that two chambers are formed inside the storage tank 100, and the two chambers can be communicated or isolated through the isolation mechanism.

[0056] A first feed port 110 communicating with one of the chambers, a second feed port 111 communicating with the other chamber, and a diversion and filtration pipeline with a filter element 124 inside are also arranged on the side wall of the storage tank 100. During installation, the first feed port 110 and the second feed port 111 are jointly connected to a feed pipe 200. The structure of the feed pipe 200 is as Figure 2 shown, and the overall structure is a "Y" shape. Among them, the two bifurcated ends are correspondingly connected to the first feed port 110 and the second feed port 111, and the other end is connected to the workshop storing carbon black to send the carbon black into the feed pipe 200. Then, air is blown into the feed pipe 200 through a fan. At this time, the air flow drives the carbon black in the feed pipe 200 to move and enters the storage tank 100 through the first feed port 110 and the second feed port 111. One end of the diversion and filtration pipeline is communicated with one of the chambers, and the other end is communicated with the other chamber. The inside of the filter element 124 is a hollow structure, and the filter element 124 has two filter surfaces, and the two filter surfaces are correspondingly arranged with the two chambers; an exhaust vent 123 (refer to Figure 4 ) is arranged at the part of the diversion and filtration pipeline corresponding to the internal space of the filter element 124.

[0057] In this way, the isolation mechanism seals one of the chambers, so that the air flow in the other chamber is discharged through the exhaust vent 123 after being filtered by one of the filter surfaces, and the other filter surface is backwashed by the action of the pressure difference during the discharge process.

[0058] In the above, as Figure 2 and Figure 3 , the isolation mechanism includes a partition plate 130 having a blanking port 131, and a blocking mechanism 140 rotatably provided at the bottom of the partition plate 130. The blocking mechanism 140 blocks the blanking port 131 during rotation, and at this time, the inside of the storage tank 100 is partitioned into two chambers, namely a first chamber 132 and a second chamber 133. Among them, the first chamber 132 is located above the partition plate 130, and the second chamber 133 is located below the partition plate 130. And the blocking mechanism 140 includes a shielding portion. When the blocking mechanism 140 blocks the blanking port 131, the first feed port 110 or the second feed port 111 is sealed by rotation.

[0059] As Figure 2 shown, the partition plate 130 is composed of two symmetrical plate bodies, and a gap in the shape of a "1" character is reserved between the two plate bodies to form the blanking port 131. Both plate bodies are located between the first feed port 110 and the second feed port 111, and both plate bodies are fixedly connected to the cover plate 101 through fixing rods provided at the top to achieve fixation inside the storage tank 100. In this way, when the carbon black enters the storage tank 100 from the first feed port 110, the carbon black can fall downward through the blanking port 131 to achieve the entry of the carbon black into the vertical pipe 102. To facilitate the fall of the carbon black, in this embodiment, the two plate bodies are set in an inclined state with a higher height near the inner wall of the storage tank 100 and a lower height near the blanking port 131. In addition, the outer side of the plate body close to the inner wall of the storage tank 100 corresponds to the radian of the inner wall of the storage tank 100 (refer to Figure 6 ), and the shape can be understood as a semi-circular structure. At the same time, a gap is reserved between the outer circle of the plate body and the inner wall of the storage tank 100 to provide space for the setting of the blocking mechanism 140.

[0060] As Figure 6As shown in the figure, the blocking mechanism 140 includes a baffle plate rotatably arranged below the blanking port 131 and a side ring 143 fixedly arranged at the end of the baffle plate. The baffle plate is in an "X" shape, and the top of the baffle plate fits against the bottom of the partition plate 130 to achieve a sealing effect. The side ring 143 is located in the gap reserved between the plate body and the storage tank 100, that is, the outer ring of the side ring 143 is in sliding fit with the inner wall of the storage tank 100, and the inner wall is in sliding fit with the outer side of the plate body. In this way, the side ring 143 fills the gap reserved between the plate body and the storage tank 100, preventing the first chamber 132 and the second chamber 133 from communicating through the gap reserved between the plate body and the storage tank 100. Then, the shielding part includes a first air baffle 144 fixedly arranged at the top end of the side ring 143 and a second air baffle 145 fixedly arranged at the bottom end of the side ring 143; and the outer walls of both the second air baffle 145 and the first air baffle 144 are in sliding fit with the inner wall of the storage tank 100. The baffle plate blocks the blanking port 131 by rotating. After the baffle plate blocks the blanking port 131, the first air baffle 144 seals the first feed port 110 or the second air baffle 145 seals the second feed port 111.

[0061] The driving of the baffle plate is preferably driven by a motor, and its structure is as Figure 3 and Figure 6 shown. By fixedly arranging a rotating shaft 146 at the top end of the baffle plate, the top end of the rotating shaft 146 fixedly penetrates the top end of the storage tank 100 (i.e., the cover plate 101) and is connected to a second motor 147 arranged at the top end of the storage tank 100 (i.e., the top of the cover plate 101). At this time, the second motor 147 can drive the baffle plate to rotate through the rotating shaft 146.

[0062] In an embodiment, the baffle plate includes a first baffle plate 141 and a second baffle plate 142 whose shapes both correspond to the blanking port 131, that is, the shapes of the first baffle plate 141 and the second baffle plate 142 are both in the shape of "1". The first baffle plate 141 and the second baffle plate 142 are cross - arranged to form an "X" - shaped structure. Moreover, the first air baffle 144 is arranged corresponding to one end of the second baffle plate 142, and the second air baffle 145 is arranged corresponding to one end of the first baffle plate 141. In this way, when the first baffle plate 141 blocks the blanking port 131, the first air baffle 144 blocks the first feed port 110, and when the second baffle plate 142 blocks the blanking port 131, the second air baffle 145 blocks the second feed port 111.

[0063] The specific blocking process is as follows:

[0064] As Figure 9As shown in the figure, when the first baffle plate 141 rotates to the bottom of the blanking port 131, the first baffle plate 141 seals the blanking port 131. At this time, the first air baffle plate 144 rotates to the first feed port 110 to seal the first feed port 110. At this time, the air flow enters the storage tank 100 through the second feed port 111. Then, as Figure 10 shown in the figure, when neither the first baffle plate 141 nor the second baffle plate 142 seals the blanking port 131, the carbon black located at the top of the partition plate 130 can fall downward through the blanking port 131. Finally, as Figure 11 shown in the figure, when the second baffle plate 142 rotates to the bottom of the blanking port 131, the second baffle plate 142 seals the blanking port 131. At this time, the second air baffle plate 145 rotates to the second feed port 111 to seal the second feed port 111. At this time, the air flow enters the storage tank 100 through the first feed port 110.

[0065] As Figure 2 and Figure 3 shown in the figure, a first exhaust port 120 communicating with the first chamber 132 is provided at the top of the cover plate 101, and a second exhaust port 121 communicating with the second chamber 133 is provided on the side wall of the storage tank 100. The diversion and filtration pipeline includes an air pipe 122 with one end communicating with the first exhaust port 120 and the other end communicating with the second exhaust port 121. In this way, when the air flow enters the storage tank 100, it can flow into the air pipe 122 through the first exhaust port 120 and the second exhaust port 121. For this reason, as Figure 4 shown in the figure, the present invention also provides an exhaust vent 123 on one side of the air pipe 122 for the air flow entering the air pipe 122 to discharge. And, to achieve the filtration effect, the part of the air pipe 122 corresponding to the exhaust vent 123 is set as an installation cavity for installing the filter element 124, and the exhaust vent 123 is located at the top of the installation cavity.

[0066] The shape of the installation cavity corresponds to the shape of the filter element 124. Among them, the filter element 124 can be a circular tube shape, a square tube shape or other annular structures. For the convenience of understanding, in this embodiment, the square tube shape is used to detail the filter element 124. As Figure 4 and Figure 5 shown in the figure, the square tube-shaped filter element 124 is vertically penetrated, and a skeleton 125 is arranged inside to support the shape of the filter element 124. And the filter element 124 is installed in the installation cavity through the exhaust vent 123. In this way, a first filter surface is formed on the side of the filter element 124 close to the gas in the first chamber 132 for filtering the gas in the first chamber 132; a second filter surface is formed on the side of the filter element 124 close to the gas in the second chamber 133 for filtering the gas in the second chamber 133.

[0067] A pressure relief valve is provided at the exhaust port 123 to increase the pressure inside the filter element 124, so as to backwash the first filtration surface or the second filtration surface under the action of the pressure difference.

[0068] Specifically, the pressure relief valve is a pressing plate 126 slidably arranged at the exhaust port 123, and a vent port 127 with an exhaust flow rate smaller than the gas transmission flow rate of the air pipe 122 is provided at the pressing plate 126. Specifically, a straight rod 128 is provided on the side wall of the air pipe 122 at the exhaust port 123, and the straight rod 128 is slidably connected to the pressing plate 126 (a spring can also be provided between the pressing plate 126 and the straight rod 128 to cover the pressing plate 126 tightly at the exhaust port 123 by using the spring). Under normal conditions, the pressing plate 126 seals the exhaust port 123 by covering the exhaust port 123, and uses its own gravity to block the gas entering the inside of the filter element 124, so as to increase the pressure inside the filter element 124, and thus backwash one of the filtration surfaces under the action of the pressure difference.

[0069] The specific process is as follows:

[0070] As Figure 7 shown, first, the second air baffle 145 seals the second feed port 111, and then the fan is started to make the feed pipe 200 convey carbon black to the first feed port 110 and the second feed port 111 in a positive pressure pneumatic conveying manner. However, since the second feed port 111 is sealed, the air flow and carbon black can only enter the first chamber 132 through the first feed port 110. The heavier carbon black falls on the top of the partition 130 by gravity, and the lighter carbon black flows into the first exhaust port 120 together with the air flow, then enters the air pipe 122, and is filtered by the first filtration surface of the filter element 124, and is discharged into the inside of the filter element 124 after filtration. During this process, the pressing plate 126 seals the exhaust port 123 by its own gravity, so that the air flow inside the filter element 124 is slowly discharged through the vent port 127. Since the gas transmission flow rate of the air pipe 122 is large, the internal air pressure of the filter element 124 gradually increases. At this time, the inside of the first chamber 132, the inside of the first exhaust port 120, and the inside of the filter element 124 are in a state of the same pressure, while the pressure of the second filtration surface of the filter element 124 is less than the internal pressure of the filter element 124. At this time, under the action of the pressure difference, the filtered gas inside the filter element 124 is discharged through the second filtration surface, so as to wash down the dust attached to the second filtration surface in time. When the pressure inside the first chamber 132 is the same as the pressure inside the second chamber 133, the air flow no longer flows through the second filtration surface. When the pressure inside the filter element 124 overcomes the gravity of the pressing plate 126, the gas inside the filter element 124 pushes the pressing plate 126 to move upward, and then is discharged through the exhaust port 123. When the carbon black reaches the specified capacity in the storage tank 100, the fan is turned off to stop the positive pressure pneumatic conveying. At this time, the air pressure in the storage tank 100 is slowly discharged through the vent port 127.

[0071] Then, control the first baffle plate 144 to seal the first feed port 110, and then start the blower. At this time, the working process is opposite to the above. For specific reference, Figure 8 , which will not be elaborated in the present invention.

[0072] The blower starts intermittently to achieve intermittent positive-pressure pneumatic conveying of carbon black (using pneumatic conveying of carbon black). Continuously repeat the above steps, so that the air flow in the storage tank 100 flows through the two filter surfaces of the filter element 124 in a successive intermittent manner. Specifically, when the air flow passes through the first exhaust port 120 and flows through the first filter surface of the filter element 124, the backwashing of the second filter surface is completed. Then control the air flow to pass through the second exhaust port 121 and flow through the second filter surface of the filter element 124 to complete the backwashing of the first filter surface. Through such continuous work, the adhesion of dust on the surface of the filter element 124 can be reduced, and the clogging speed can be slowed down.

[0073] It can be seen that the present invention divides the inside of the storage tank 100 into two chambers, guides the air flow from two directions to both sides of the filter element 124, makes the pressure inside the filter element 124 greater than the pressure at one of the filter surfaces, and realizes the backwashing of the filter surface. And, through the continuous rotation of the blocking mechanism 140, the air flow in the storage tank 100 flows through the two filter surfaces of the filter element 124 in a successive intermittent manner, thereby avoiding the accumulation of dust at the filter surface of the filter element 124, slowing down the clogging speed of the filter element 124, and reducing the flushing frequency of using compressed gas for the filter element 124.

[0074] It should be understood that a flushing pipe 129 with one end extending into the inside of the filter element 124 and the other end connected to a compressed gas source is also provided at the air pipe 122. When the filter element 124 is clogged, high-pressure gas is conveyed into the filter element 124 through the flushing pipe 129 to complete the cleaning of the filter element 124.

[0075] In addition, as Figure 12 shown, the baffle plate will cooperate with the partition plate 130 during rotation to intercept the carbon black at the top of the partition plate 130, so that the intercepted carbon black will fall after accumulating for a period of time. That is to say, the blocking mechanism 140 can not only guide the gas in the storage tank 100 by isolation, but also intercept the carbon black during the isolation process, so that the intercepted carbon black will fall after accumulating for a period of time. The accumulated carbon black will generate a strong impact force on the carbon black at the bottom of the storage tank 100 during the falling process, thereby changing the state of the carbon black at the bottom of the storage tank 100 and avoiding carbon black clogging.

[0076] And, as Figure 13 shown, a stirring rod 150 with the bottom end extending into the vertical pipe 102 can also be fixed at the bottom of the baffle plate. The stirring rod 150 uses the rotation of the baffle plate to dredge the carbon black in the vertical pipe 102, so that the carbon black can flow through the vertical pipe 102 continuously and stably, and the accuracy of quantitative feeding is improved.

[0077] It should be understood that in the present invention, by continuously changing the direction of the air flow, when the air flow passes through one side of the filter element 124, it impacts the other side. The impact force of this method comes from the wind force of the fan, so it will not affect the filter element 124. At the same time, in the present invention, to slow down the clogging efficiency of the filter element 124, the air flow direction is continuously changed to timely wash down the dust, avoiding the filter element 124 from filtering with only one filtering surface, that is, shortly after the dust adheres to the filter element 124, it is washed down by the air flow on the other side.

[0078] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A carbon black spiral feeding device for receiving dusty materials, comprising a storage tank (100) and a feeding pipe (103) arranged at the bottom of the storage tank (100), wherein a cover plate (101) for sealing is arranged at the top of the storage tank (100), the feeding pipe (103) is communicated with the bottom of the storage tank (100), and a spiral plate (105) is arranged inside the feeding pipe (103), characterized in that: An isolation mechanism is provided inside the material storage tank (100), and the isolation mechanism is used to isolate the internal space of the material storage tank (100), so that two chambers are formed inside the material storage tank (100), and the two chambers can be connected or isolated through the isolation mechanism; The side wall of the storage tank (100) is further provided with a first feed port (110) communicating with one of the chambers, a second feed port (111) communicating with the other chamber, and a flow guiding and filtering pipe having a filter element (124) arranged therein; one end of the flow guiding and filtering pipe is communicated with one of the chambers, and the other end is communicated with the other chamber; the interior of the filter element (124) is a hollow structure, and the filter element (124) has two filtering surfaces, and the two filtering surfaces are arranged corresponding to the two chambers; and an exhaust port (123) is arranged at a portion of the flow guiding and filtering pipe corresponding to the internal space of the filter element (124); The isolation mechanism seals one of the chambers so that the airflow in the other chamber is filtered by one of the filter surfaces and then discharged through the exhaust port (123), and during the discharge process, the other filter surface is backwashed using the effect of the pressure difference.

2. The carbon black spiral feeding device for receiving dusty materials according to claim 1 is characterized in that: The isolation mechanism comprises a partition (130) having a material drop opening (131), and a blocking mechanism (140) rotatably arranged at the bottom of the partition (130), wherein the blocking mechanism (140) blocks the material drop opening (131) during rotation, so that a first chamber (132) and a second chamber (133) are formed inside the storage tank (100); wherein the first chamber (132) is located above the partition (130), and the second chamber (133) is located below the partition (130); The blocking mechanism (140) comprises a shielding portion, and when the blocking mechanism (140) blocks the material drop opening (131), the shielding portion seals the first material feed opening (110) or the second material feed opening (111) by means of rotation.

3. The carbon black spiral feeding device for receiving dusty materials according to claim 2 is characterized in that: The partition plate (130) is composed of two symmetrical plates, a material drop opening (131) is reserved between the two plates, and the two plates are located between the first material feed opening (110) and the second material feed opening (111), and are fixedly connected to the cover plate (101); The outer circle of the plate body corresponds to the curvature of the inner wall of the storage tank (100), and a gap is reserved between the outer circle of the plate body and the inner wall of the storage tank (100) to provide space for the setting of the blocking mechanism (140).

4. The carbon black spiral feeding device for receiving dusty materials according to claim 3 is characterized in that: The blocking mechanism (140) comprises a material blocking plate rotatably arranged below the material drop opening (131), and a side ring (143) fixedly arranged at the end of the material blocking plate; The baffle plate is an "X"-shaped structure, and the top of the baffle plate is in contact with the bottom of the partition plate (130); The side ring (143) is located in a gap reserved between the plate body and the storage tank (100); The shielding portion comprises a first air baffle plate (144) fixedly arranged at the top end of the side ring (143), and a second air baffle plate (145) fixedly arranged at the bottom end of the side ring (143), and the outer walls of the second air baffle plate (145) and the first air baffle plate (144) are both slidably fitted with the inner wall of the storage tank (100); The baffle plate seals the material drop opening (131) by rotating, and after the baffle plate seals the material drop opening (131), the first air baffle plate (144) seals the first material feed opening (110) or the second air baffle plate (145) seals the second material feed opening (111).

5. The carbon black spiral feeding device for receiving dusty materials according to claim 4 is characterized in that: A rotating shaft (146) is fixedly disposed at the top end of the material blocking plate; the top end of the rotating shaft (146) passes through the cover plate (101) and is connected to a second motor (147) disposed at the top of the cover plate (101).

6. The carbon black spiral feeding device for receiving dusty materials according to claim 4 is characterized in that: The material baffle plate comprises a first material baffle plate (141) and a second material baffle plate (142), both of which have shapes corresponding to the material drop opening (131); the first material baffle plate (141) and the second material baffle plate (142) are cross-arranged to form an "X"-shaped structure; The first air baffle plate (144) is arranged corresponding to one end of the second material baffle plate (142), and the second air baffle plate (145) is arranged corresponding to one end of the first material baffle plate (141); When the first material baffle plate (141) blocks the material drop opening (131), the first air baffle plate (144) blocks the first material feed opening (110); when the second material baffle plate (142) blocks the material drop opening (131), the second air baffle plate (145) blocks the second material feed opening (111).

7. The carbon black spiral feeding device for receiving dusty materials according to claim 2 is characterized in that: The flow guiding and filtering pipeline comprises an air pipe (122) having one end in communication with the first chamber (132) and the other end in communication with the second chamber (133); the exhaust port (123) is arranged on one side of the air pipe (122); The portion of the air pipe (122) corresponding to the exhaust port (123) is arranged as an installation cavity for installing the filter element (124), and the exhaust port (123) is located at the top of the installation cavity; a pressure relief valve is arranged at the exhaust port (123) for increasing the pressure inside the filter element (124), thereby backwashing the first filter surface or the second filter surface under the action of the pressure difference.

8. The carbon black spiral feeding device for receiving dusty materials according to claim 7 is characterized in that: The shape of the installation cavity corresponds to the shape of the filter element (124); the filter element (124) is in the shape of a square tube; and the filter element (124) is installed in the installation cavity through the exhaust port (123); A side of the filter element (124) close to the gas in the first chamber (132) forms a first filter surface for filtering the gas in the first chamber (132); a side of the filter element (124) close to the gas in the second chamber (133) forms a second filter surface for filtering the gas in the second chamber (133).

9. The carbon black spiral feeding device for receiving dusty materials according to claim 7, characterized in that: The pressure relief valve is a pressure plate (126) slidably arranged at the exhaust port (123); a straight rod (128) is fixedly arranged at a position of the air pipe (122) corresponding to the exhaust port (123) and is longitudinally slidably connected to the pressure plate (126); under normal conditions, the pressure plate (126) seals the exhaust port (123) by covering the exhaust port (123) and blocks the gas entering the filter element (124) by its own gravity, so as to increase the pressure inside the filter element (124); The pressure plate (126) is provided with an air vent (127) whose exhaust flow rate is smaller than the air delivery flow rate of the air pipe (122).

10. The carbon black spiral feeding device for receiving dusty materials according to claim 4, characterized in that: During the rotation process, the baffle plate cooperates with the partition plate (130) to intercept the carbon black on the top of the partition plate (130), so that the intercepted carbon black falls off after accumulation.

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