A viscous material storage and delivery system and a method of delivering viscous material

Abstract

The application provides a viscous material storage and conveying system and a viscous material conveying method, a filter layer is arranged close to the inner wall of a storage and conveying warehouse; the filter layer comprises a first metal mesh tube, a second metal mesh tube and a third metal mesh tube which are arranged in sequence along the direction from the inner wall of the storage and conveying warehouse to the center of the storage and conveying warehouse; a heating device is arranged close to the outer surface of the shell of the storage and conveying warehouse, and a plurality of liquid paraffin injection ports are uniformly distributed on the top section of the filter layer. The viscous material directly contacts the paraffin in the inner wall of the filter layer after entering the storage and conveying warehouse. When cleaning is needed, the filter layer is heated by the heating device to melt the paraffin filled in the filter layer, and the paraffin carrying the viscous material falls into the bottom of the storage and conveying warehouse, so that the cleaning is more convenient, the cleaning efficiency is improved, and in addition, the viscous material does not directly contact the inner wall of the storage and conveying warehouse, so that the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of waste treatment technology, and more specifically to a storage and conveying system and method for conveying viscous materials. Background Technology

[0002] In existing hazardous waste disposal and cement industries, due to the variety of materials and their water and oil content, traditional material storage, conveying and metering devices and equipment may experience material sticking and bridging during operation due to the viscosity of the materials, resulting in long discharge times or even no discharge at all, requiring manual handling.

[0003] Oily sludge is typically characterized by high oil content and high viscosity, and it also contains impurities such as mud, sand, iron filings, and fibers that are difficult to separate. After deep dewatering to reduce the moisture content to around 60%, the sludge becomes even more viscous. These sticky materials are very prone to sticking to equipment during storage and transportation, causing blockages and hindering material flow. Due to their high viscosity, cleaning is time-consuming and labor-intensive, affecting waste treatment efficiency. Summary of the Invention

[0004] This invention provides a storage and conveying system and method for viscous materials, which solves the problems of viscous materials easily clogging storage and conveying equipment and being difficult to clean in the prior art.

[0005] This invention provides a storage and conveying system for viscous materials, including a storage and conveying silo and a paraffin heater; the storage and conveying silo includes a cylindrical storage and conveying silo shell, and a filter layer is disposed in close contact with the inner wall of the storage and conveying silo; the filter layer includes a first metal mesh tube, a second metal mesh tube and a third metal mesh tube arranged sequentially along the inner wall of the storage and conveying silo to the center of the storage and conveying silo;

[0006] A first gap layer for filling sand and gravel of a first particle size is provided between the first metal mesh tube and the inner wall of the storage and conveying tank; a second gap layer for filling sand and gravel of a second particle size is provided between the second metal mesh tube and the first metal mesh tube; and a third gap layer for filling sand and gravel of a third particle size is provided between the third metal mesh tube and the second metal mesh tube.

[0007] The first particle size is larger than the second particle size, and the second particle size is larger than the third particle size; the aperture of the first metal mesh tube is smaller than the second particle size; the aperture of the second metal mesh tube is smaller than the third particle size; and the aperture of the third metal mesh tube is smaller than the third particle size.

[0008] The pores formed after the first gap layer, the second gap layer and the third gap layer are filled with sand and gravel of corresponding particle sizes are used for paraffin filling;

[0009] Temperature sensors for detecting the temperature of the inner wall of the filter layer are evenly distributed axially on the inner wall of the filter layer; the temperature sensors are electrically connected to the paraffin heater and transmit the measured temperature data to the paraffin heater; multiple liquid paraffin injection ports are evenly distributed on the top of the filter layer; the paraffin heater is connected to the injection ports through a pipe; the injection ports are located at the top of the first gap layer so that the liquid paraffin can smoothly penetrate into the inner wall of the filter layer.

[0010] An annular base plate is fixedly provided at the bottom of the filter layer. The outer diameter of the annular base plate matches the inner wall of the storage and conveying tank, and the inner diameter of the annular base plate matches the inner wall of the filter layer. The annular base plate is used to prevent liquid paraffin from leaking from the bottom of the filter layer when liquid paraffin is injected. The inner wall of the filter layer is flush with the inner wall of the storage and conveying tank located below the filter layer.

[0011] A storage and conveying tank heating device is installed close to the outer surface of the storage and conveying tank shell. The storage and conveying tank heating device is used to heat and melt the paraffin wax solidified on the inner wall of the storage and conveying tank and the filter layer when it is necessary to clean the inside of the storage and conveying tank. The melted paraffin wax carries the sticky material and falls into the bottom of the storage and conveying tank, thereby cleaning the storage and conveying tank.

[0012] Optionally, the ratio of the particle size of the sand and gravel filling two adjacent gap layers along the inner wall of the storage and conveying silo to the center of the storage and conveying silo is in the range of 1.5 to 3.

[0013] The present invention also provides a method for conveying viscous materials using a storage and conveying system, comprising the following steps:

[0014] Step 1: Activate the paraffin heater to inject molten liquid paraffin into the first gap layer through the injection port, allowing the liquid paraffin to penetrate into the second gap layer and the third gap layer in sequence. Obtain the temperature data from the temperature sensor installed inside the filter layer, and control the temperature of the paraffin heater according to the temperature data so that the temperature of the inner layer of the filter layer is lower than the solidification temperature of the liquid paraffin. The liquid paraffin can adhere to the inner layer of the filter layer, the inner wall of the filter layer, and the inner wall of the storage and conveying tank and solidify.

[0015] Step 2: After the paraffin wax inside the filter layer, on the inner wall of the filter layer, and on the inner wall of the storage and conveying silo has completely solidified, the storage and conveying silo is used to store and convey the viscous material. When it is necessary to clean the material adhering to the storage and conveying silo, the storage and conveying silo heating device is activated to heat the storage and conveying silo until the paraffin wax inside the storage and conveying silo is completely melted, carrying the viscous material adhering to the inner wall of the filter layer into the bottom of the silo.

[0016] Optionally, the temperature range of the inner layer of the filter layer is 30–35°C.

[0017] Optionally, controlling the temperature of the paraffin heater based on the temperature data specifically includes:

[0018] When the temperature data exceeds the temperature of the inner layer of the filter layer, the temperature of the paraffin heater is reduced;

[0019] When the temperature data is lower than the temperature of the inner layer of the filter layer, the temperature of the paraffin heater is increased.

[0020] The present invention has at least the following beneficial effects:

[0021] This invention provides a storage and conveying system and method for viscous materials. A filter layer with varying pore sizes along the inner wall of the storage and conveying silo to the central axis of the silo is installed within the storage and conveying silo. The temperature of the inner wall of the filter layer is controlled by a paraffin heater, allowing the paraffin to fully fill the pores in the filter layer and solidify after filling all pores. The viscous material enters the storage and conveying silo and directly contacts the paraffin on the inner wall of the filter layer. When cleaning is required after use, the filter layer is heated by a heating device in the storage and conveying silo, melting the paraffin inside. The melted paraffin carries the viscous material adhering to the inner surface of the filter layer and falls to the bottom of the storage and conveying silo, making cleaning easier and significantly improving efficiency. Furthermore, since the viscous material does not directly contact the inner wall of the storage and conveying silo, the service life of the silo is extended. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a storage and conveying system provided in an embodiment of the present invention.

[0024] Figure label:

[0025] 1-Storage and conveying silo outer shell; 2-First metal mesh tube; 3-Second metal mesh tube; 4-Third metal mesh tube; 5-First gap layer; 6-Second gap layer; 7-Third gap layer; 8-Storage and conveying silo heating device; 9-Injection port; 10-Paraffin heater; 11-Pipeline. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention provides a storage and conveying system for viscous materials, such as... Figure 1 As shown, it includes a storage and conveying tank and a paraffin heater 10; the storage and conveying tank includes a columnar storage and conveying tank shell 1, and a filter layer is provided in close contact with the inner wall of the storage and conveying tank; the filter layer includes a first metal mesh tube 2, a second metal mesh tube 3 and a third metal mesh tube 4 arranged sequentially along the inner wall of the storage and conveying tank to the center of the storage and conveying tank;

[0028] A first gap layer 5 for filling sand and gravel of a first particle size is provided between the first metal mesh tube 2 and the inner wall of the storage and conveying tank; a second gap layer 6 for filling sand and gravel of a second particle size is provided between the second metal mesh tube 3 and the first metal mesh tube 2; and a third gap layer 7 for filling sand and gravel of a third particle size is provided between the third metal mesh tube 4 and the second metal mesh tube 3.

[0029] The first particle size is larger than the second particle size, and the second particle size is larger than the third particle size; the aperture of the first metal mesh tube 2 is smaller than the second particle size; the aperture of the second metal mesh tube 3 is smaller than the third particle size; and the aperture of the third metal mesh tube 4 is smaller than the third particle size.

[0030] The pores formed by the first gap layer 5, the second gap layer 6 and the third gap layer 7 after being filled with sand and gravel of corresponding particle sizes are used for paraffin filling;

[0031] Temperature sensors for detecting the temperature of the inner wall of the filter layer are evenly distributed axially on the inner wall of the filter layer; the temperature sensors are electrically connected to the paraffin heater 10 and transmit the measured temperature data to the paraffin heater 10; a plurality of liquid paraffin injection ports 9 are evenly distributed on the top of the filter layer; the paraffin heater 10 is connected to the injection ports 9 through a pipe 11; the injection ports 9 are located on the top of the first gap layer 5 so that the liquid paraffin can smoothly penetrate into the inner wall of the filter layer.

[0032] An annular base plate is fixedly provided at the bottom of the filter layer. The outer diameter of the annular base plate matches the inner wall of the storage and conveying tank, and the inner diameter of the annular base plate matches the inner wall of the filter layer. The annular base plate is used to prevent liquid paraffin from leaking from the bottom of the filter layer when liquid paraffin is injected. The inner wall of the filter layer is flush with the inner wall of the storage and conveying tank located below the filter layer.

[0033] A storage and conveying tank heating device 8 is provided close to the outer surface of the outer shell 1 of the storage and conveying tank. The storage and conveying tank heating device 8 is used to heat and melt the paraffin wax solidified on the inner wall of the storage and conveying tank and the filter layer when it is necessary to clean the inside of the storage and conveying tank. The melted paraffin wax carries the sticky material and falls into the bottom of the storage and conveying tank, thereby cleaning the storage and conveying tank.

[0034] Specifically, the storage and conveying unit is equipped with a filter layer, which is coaxial with the storage and conveying unit. The filter layer is in close contact with the inner wall of the storage and conveying unit. The filter layer includes a first metal mesh tube 2, a second metal mesh tube 3, and a third metal mesh tube 4, which provide support and are arranged sequentially along the inner wall of the storage and conveying unit to the center of the storage and conveying unit.

[0035] A first gap layer 5 for filling sand and gravel of a first particle size is provided between the first metal mesh tube 2 and the inner wall of the storage and conveying silo; a second gap layer 6 for filling sand and gravel of a second particle size is provided between the second metal mesh tube 3 and the inner wall of the first metal mesh tube 2; a third gap layer 7 for filling sand and gravel of a third particle size is provided between the third metal mesh tube 4 and the interior of the second metal mesh tube 3. The pore size of the filter layer gradually decreases from the outer wall of the storage and conveying silo to the central axis, that is, the sand and gravel particle size in the first gap layer 5 is larger than that in the second gap layer 6, and the sand and gravel particle size in the second gap layer 6 is larger than that in the third gap layer 7. The pore size of the first metal mesh tube 2 is smaller than the first particle size; the pore size of the second metal mesh tube 3 is larger than the second particle size; and the pore size of the third metal mesh tube 4 is larger than the third particle size. Liquid paraffin is injected from the injection port 9 located at the top section of the filter layer in the first gap layer 5. There are multiple injection ports 9 at the top of the filter layer; in this embodiment of the invention, there is one injection port 9. The sand and gravel include sand, gravel, or pebbles of different particle sizes. In this embodiment of the invention, the particle size of the innermost filter layer ranges from 2 to 5 mm, and the thickness of each interstitial layer ranges from 150 mm to 250 mm.

[0036] Several temperature sensors are evenly arranged axially on the inner wall of the filter layer to detect its temperature. These temperature sensors are electrically connected to the paraffin heater 10 and transmit the detected temperature data to it. The paraffin heater 10 primarily heats and melts the paraffin wax. Since liquid paraffin has a wide temperature range, if its temperature is too high, it may still be very hot and fluid when it penetrates the inner wall of the filter layer, making it difficult to solidify. Therefore, it is necessary to control the temperature of the injected liquid paraffin by controlling the temperature of the inner wall, ensuring that the temperature of the liquid paraffin is below its freezing point when it penetrates the inner wall of the filter layer, but not too low. This guarantees that the liquid paraffin can smoothly reach the inner wall of the filter layer and solidify quickly, thus achieving paraffin coverage of the entire filter layer.

[0037] After liquid paraffin is injected from the top of the first interstitial layer 5, it flows downwards along the pores of the first interstitial layer 5 to the bottom of the filter layer. Because the outermost layer has a higher temperature, the liquid paraffin does not solidify. It then permeates sequentially into the second interstitial layer 6 and the third interstitial layer 7, gradually solidifying from the inner wall to the outer wall of the filter layer, forming the first solidified layer. The liquid paraffin then repeats the solidification process of the first layer, solidifying into the second layer, until all the pores of the top layer of the filter layer are filled with liquid paraffin. At this point, the inner wall of the filter layer is coated with paraffin. From the inner surface of the storage and transport silo to its center, the particle size of the sand and gravel in the filter layer gradually decreases, meaning the pores in the filter layer gradually become smaller, which facilitates the smooth penetration of liquid paraffin from the outermost layer to the interior of the filter layer.

[0038] The bottom of the storage and conveying tank is fixedly equipped with an annular base plate. The outer diameter of the annular base plate matches the inner wall of the storage and conveying tank, and the outer diameter of the annular base plate matches the inner wall of the filter layer. Since the paraffin wax initially flows from the top to the bottom of the first gap layer 5 of the filter layer when it is first injected, without the annular base plate, it would easily leak directly from the bottom of the first gap layer 5 and would not be able to penetrate smoothly into the second gap layer 6 and the third gap layer 7.

[0039] The storage and conveying silo is equipped with a heating device on its exterior, which heats the entire silo. After passing through the filter layer, the paraffin wax forms a smooth film on the inner wall of the silo; this film can be considered the outer wall of the filter layer formed after the paraffin wax injection. After a period of use, if blockage occurs on the inner wall of the filter layer or material flow becomes obstructed, requiring cleaning, the heating device 8 is activated to melt the paraffin wax adhering to the filter layer until the paraffin wax in direct contact with the sticky material melts. The melted paraffin wax carries the sticky material directly to the bottom of the storage and conveying silo, achieving a single cleaning. This paraffin wax adhering process is repeated on the walls of the storage and conveying silo before the next material storage. The introduction of paraffin wax increases the calorific value of materials such as oil sludge and sewage sludge, making them more suitable as alternative fuels.

[0040] In summary, the present invention provides a storage and conveying system and method for viscous materials. A filter layer with varying pore sizes along the inner wall of the storage and conveying silo to the central axis of the silo is installed within the storage and conveying silo. The temperature of the liquid paraffin is controlled by a paraffin heater, thereby controlling the temperature of the inner wall of the filter layer. This ensures that the paraffin fully fills the pores in the filter layer and eventually solidifies on its inner wall. The viscous material enters the storage and conveying silo and directly contacts the paraffin on the inner wall of the filter layer. When cleaning is required after use, the filter layer is heated by a heating device in the storage and conveying silo, melting the paraffin filling it. The melted paraffin carries the viscous material adhering to the paraffin on the inner surface of the filter layer and falls to the bottom of the storage and conveying silo, making cleaning easier and significantly improving efficiency. Furthermore, since the viscous material does not directly contact the inner wall of the storage and conveying silo, the service life of the silo is extended.

[0041] In one possible implementation, the ratio of the particle size of the sand and gravel filling two adjacent gaps along the inner wall of the storage and transport silo to the center of the storage and transport silo ranges from 1.5 to 3.

[0042] Specifically, the ratio of the particle size of the sand and gravel filling the two adjacent gap layers is in the range of 1.5 to 3, so that the liquid paraffin can better penetrate into the inner layer of the filter layer. Since the sand and gravel particles in the inner layer of the filter layer are the smallest and the pores are smaller, it can better prevent sticky materials from entering the filter layer and causing blockage.

[0043] The present invention also provides a method for conveying viscous materials, comprising the following steps:

[0044] Step 1: Activate the paraffin heater to inject molten liquid paraffin into the first gap layer through the injection port, allowing the liquid paraffin to penetrate into the second gap layer and the third gap layer in sequence. Obtain the temperature data from the temperature sensor installed inside the filter layer, and control the temperature of the paraffin heater according to the temperature data so that the temperature of the inner layer of the filter layer is lower than the solidification temperature of the liquid paraffin. The liquid paraffin can adhere to the inner layer of the filter layer, the inner wall of the filter layer, and the inner wall of the storage and conveying tank and solidify.

[0045] Step 2: After the paraffin wax inside the filter layer, on the inner wall of the filter layer, and on the inner wall of the storage and conveying silo has completely solidified, the storage and conveying silo is used to store and convey the viscous material. When it is necessary to clean the material adhering to the storage and conveying silo, the storage and conveying silo heating device is activated to heat the storage and conveying silo until the paraffin wax inside the storage and conveying silo is completely melted, carrying the viscous material adhering to the inner wall of the filter layer into the bottom of the silo.

[0046] Specifically, in step 1, the paraffin heating device is first turned on to melt the solid paraffin into liquid paraffin. The liquid paraffin is then injected through pipe 11 into the top of the first gap layer 5 via injection port 9, allowing it to sequentially penetrate into the second gap layer 6 and the third gap layer 7. The data from the temperature sensor on the inner wall of the filter layer is monitored in real time, and the heating temperature of the paraffin heater 10 is adjusted based on the temperature data transmitted by the sensor. This ensures that the liquid paraffin is below its solidification temperature when penetrating into the inner wall of the filter layer, allowing it to solidify smoothly. It also prevents the inner wall temperature of the filter layer from being too low, causing the liquid paraffin to solidify before reaching the inner wall.

[0047] Once the paraffin wax in the storage and conveying silo has completely solidified, it can be put into use. After being put into use, the storage and conveying silo should be cleaned regularly. When cleaning is required, the heating device 8 of the storage and conveying silo is activated to completely melt the wax in the silo. The melted paraffin wax, carrying sticky materials, falls to the bottom of the storage and conveying silo. Before storing materials again, the process of applying paraffin wax to the storage and conveying silo is repeated.

[0048] In one possible implementation, the temperature range of the inner layer of the filter is 30–35°C.

[0049] Specifically, the paraffin wax used in this application has a solidification point of approximately 45°C. Controlling the temperature of the inner wall of the filter layer to be lower than the solidification point of the liquid paraffin allows the relatively hot liquid paraffin to cool down quickly and reach its solidification point when it reaches the innermost layer of the filter layer. However, the inner layer temperature cannot be too low; otherwise, the paraffin wax may solidify before penetrating the inner wall of the filter layer, preventing complete adhesion of the paraffin wax. The applicant has found in production that when the temperature of the inner layer of the filter layer is controlled between 30 and 35°C, the paraffin wax can smoothly penetrate to the inner wall and solidify.

[0050] In one possible implementation, controlling the temperature of the paraffin heater based on the temperature data specifically includes:

[0051] When the temperature data exceeds the temperature of the inner layer of the filter layer, the temperature of the paraffin heater is reduced;

[0052] When the temperature data is lower than the temperature of the inner layer of the filter layer, the temperature of the paraffin heater is increased.

[0053] Specifically, the heating temperature of the paraffin heater 10 is controlled based on data transmitted from a temperature sensor installed on the filter layer, thereby controlling the temperature of the liquid paraffin injected into the filter layer. When the temperature data fed back by the temperature sensor exceeds the temperature of the inner layer of the filter layer, the temperature of the liquid paraffin injected into the filter layer is reduced by lowering the heating temperature of the paraffin heater 10 on the paraffin. When the temperature data is lower than that of the inner layer of the filter layer, the temperature of the paraffin heater 10 is increased.

[0054] The present solution is further illustrated by the following embodiments.

[0055] Example 1

[0056] Viscous materials refer to sludge with a moisture content of 40% to 60%. At this moisture content, the sludge is in the viscous zone, its rheological properties change, and it becomes highly viscous, prone to clumping, and difficult to transport.

[0057] The paraffin wax used has a solidification point of around 45℃. Paraffin wax at 75℃ is injected into the filter layer to seal the pores. Liquid paraffin wax is injected through the injection port 9 at the top of the filter layer. The temperature of the liquid paraffin wax is controlled by the paraffin wax heater 10, thereby controlling the internal temperature of the filter layer at 30℃. The liquid paraffin wax permeates from the outermost layer of the filter layer through the pores to the inner wall of the filter layer until the filter layer is completely filled, and finally solidifies.

[0058] Regular cleaning is necessary. After a period of use, the inner walls of the storage and conveying warehouse become covered with sludge containing 40% to 60% water. The paraffin wax is slowly melted by a heating device on the outermost layer. Finally, under the action of the liquid paraffin wax, the adhering material falls to the bottom of the warehouse along with the wax.

[0059] Then repeat the paraffin sealing pore step.

[0060] Example 2

[0061] The viscous materials are tank bottom sludge and refinery sludge. This part of the sludge is an emulsion system in which petroleum hydrocarbons, gums, asphalt, mud and sand, inorganic flocs, organic flocs, water and other organic and inorganic substances are firmly bonded together, and it is highly viscous.

[0062] The pores are sealed with paraffin wax, which has a melting point of approximately 45°C. The molten liquid paraffin wax is injected into the top of the filter layer, and the temperature of the paraffin wax heater is adjusted based on the temperature sensor installed on the inner wall of the filter layer, ensuring that the temperature measured by the sensor does not exceed 35°C. The liquid paraffin wax permeates from the outermost layer of the filter layer through the pores to the inner wall of the filter layer until the filter layer is completely filled, and finally solidifies.

[0063] Regular cleaning is required. After a period of use, the inner walls of the storage and conveying silo become covered with bottom mud and refinery sludge. The paraffin wax is slowly melted by a heating device on the outermost layer. Finally, under the action of the liquid paraffin wax, the material adhering to the inner wall of the filter layer falls to the bottom of the silo along with the paraffin wax.

[0064] Repeat the paraffin sealing process.

[0065] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0066] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A storage and conveying system for viscous materials, characterized in that, It includes a storage and conveying tank and a paraffin heater; the storage and conveying tank includes a cylindrical storage and conveying tank shell, and a filter layer is provided in close contact with the inner wall of the storage and conveying tank; the filter layer includes a first metal mesh tube, a second metal mesh tube and a third metal mesh tube arranged sequentially along the inner wall of the storage and conveying tank to the center of the storage and conveying tank; A first gap layer for filling sand and gravel of a first particle size is provided between the first metal mesh tube and the inner wall of the storage and conveying tank; a second gap layer for filling sand and gravel of a second particle size is provided between the second metal mesh tube and the first metal mesh tube; and a third gap layer for filling sand and gravel of a third particle size is provided between the third metal mesh tube and the second metal mesh tube. The first particle size is larger than the second particle size, and the second particle size is larger than the third particle size; The pore size of the first metal mesh is smaller than that of the second particle size; The pore size of the second metal mesh is smaller than that of the third particle size; The aperture of the third metal mesh is smaller than that of the third particle size; The pores formed after the first gap layer, the second gap layer and the third gap layer are filled with sand and gravel of corresponding particle sizes are used for paraffin filling; Temperature sensors for detecting the temperature of the inner wall of the filter layer are evenly distributed axially on the inner wall of the filter layer; the temperature sensors are electrically connected to the paraffin heater and transmit the measured temperature data to the paraffin heater; multiple liquid paraffin injection ports are evenly distributed on the top of the filter layer; the paraffin heater is connected to the injection ports through a pipe; the injection ports are located at the top of the first gap layer so that the liquid paraffin can smoothly penetrate into the inner wall of the filter layer. An annular base plate is fixedly provided at the bottom of the filter layer. The outer diameter of the annular base plate matches the inner wall of the storage and conveying tank, and the inner diameter of the annular base plate matches the inner wall of the filter layer. The annular base plate is used to prevent liquid paraffin from leaking from the bottom of the filter layer when liquid paraffin is injected. The inner wall of the filter layer is flush with the inner wall of the storage and conveying tank located below the filter layer. A storage and conveying tank heating device is installed close to the outer surface of the storage and conveying tank shell. The storage and conveying tank heating device is used to heat and melt the paraffin wax solidified on the inner wall of the storage and conveying tank and the filter layer when it is necessary to clean the inside of the storage and conveying tank. The melted paraffin wax carries the sticky material and falls into the bottom of the storage and conveying tank, thereby cleaning the storage and conveying tank.

2. The storage and conveying system according to claim 1, characterized in that, The ratio of the particle size of the sand and gravel filling two adjacent gap layers along the inner wall of the storage and conveying silo to the center of the storage and conveying silo ranges from 1.5 to 3.

3. A method for conveying viscous materials using the storage and conveying system according to any one of claims 1-2, characterized in that, Includes the following steps: Step 1: Activate the paraffin heater to inject molten liquid paraffin into the first gap layer through the injection port, allowing the liquid paraffin to penetrate into the second gap layer and the third gap layer in sequence. Obtain the temperature data from the temperature sensor installed inside the filter layer, and control the temperature of the paraffin heater according to the temperature data so that the temperature of the inner layer of the filter layer is lower than the solidification temperature of the liquid paraffin. The liquid paraffin can adhere to the inner layer of the filter layer, the inner wall of the filter layer, and the inner wall of the storage and conveying tank and solidify. Step 2: After the paraffin wax inside the filter layer, on the inner wall of the filter layer, and on the inner wall of the storage and conveying silo has completely solidified, the storage and conveying silo is used to store and convey the viscous material. When it is necessary to clean the material adhering to the storage and conveying silo, the storage and conveying silo heating device is activated to heat the storage and conveying silo until the paraffin wax inside the storage and conveying silo is completely melted, carrying the viscous material adhering to the inner wall of the filter layer into the bottom of the silo.

4. The method for conveying viscous materials in the storage and conveying system according to claim 3, characterized in that, The temperature range of the inner layer of the filter is 30 to 35°C.

5. The method for conveying viscous materials according to claim 3, characterized in that, The step of controlling the temperature of the paraffin heater based on the temperature data specifically includes: When the temperature data exceeds the temperature of the inner layer of the filter layer, the temperature of the paraffin heater is reduced; When the temperature data is lower than the temperature of the inner layer of the filter layer, the temperature of the paraffin heater is increased.

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