Raw material feeding system, control method and asphalt station

Abstract

The invention provides a raw material feeding system, a control method and an asphalt station, and relates to the field of asphalt reclaimed materials. The feeding system comprises a feeding assembly provided with a first conveying opening and a second conveying opening; the first conveying assembly communicates with the first conveying opening; the drying device is provided with a drying input end, and the drying input end is connected with the first conveying assembly; the second conveying assembly communicates with the second conveying opening; the second conveying assembly is connected with the raw material conveying assembly; the detection part detects the position of the raw material in the drying input end; a control member; when the position of the raw material is larger than or equal to the preset position, the conveying speed of the first conveying assembly is controlled to be reduced or stopped; the second conveying port is configured to be used for receiving the raw materials overflowing from the first conveying port. The conveying speed of the first conveying assembly is controlled through shunting of the first conveying opening and the second conveying opening, dynamic balance of feeding is achieved, and raw materials are prevented from overflowing or blocking the drying device.

Description

Technical Field

[0001] The present application relates to the field of asphalt recycled materials, and in particular to a raw material feeding system, a control method and an asphalt station. Background Art

[0002] After reaching the design service life, the overall performance of asphalt pavement declines and it is difficult to meet road demand. However, through asphalt recycling technology, the waste can be recycled and reused, so that the raw materials can meet the pavement design requirements again and save production costs. Hot mix asphalt mixture is the main raw material for the current asphalt concrete pavement construction. It is obtained by mixing new materials and recycled materials in proportion. Among them, the recycled materials are obtained by hot mixing waste materials.

[0003] In the prior art, waste materials are directly transported to a conveying inlet of a drying drum via a conveyor belt and are heated by the drying drum.

[0004] However, when the conveying volume increases, it will cause overflow at the conveying entrance, and in severe cases it may even cause the drum to be blocked, causing the drying drum to fail to operate normally. Summary of the invention

[0005] The present application provides a raw material feeding system, a control method and an asphalt station, which are used to solve the problem in the prior art that when the conveying volume increases, it will cause overflow at the conveying entrance, and in severe cases it will even cause the drum to be blocked, resulting in the drying drum being unable to operate normally.

[0006] In order to achieve the above purpose, the technical solution of this application is as follows:

[0007] On the one hand, the present application provides a raw material feeding system, including: a feeding component, the feeding component having a first conveying port and a second conveying port corresponding to the first conveying port; a first conveying component, the first conveying component being connected to the first conveying port; a drying device, the drying device having a drying input end, the drying input end being connected to the first conveying component; a second conveying component, the second conveying component being connected to the second conveying port; a raw material transport component, the second conveying component being connected to the raw material transport component; a detection component, which is used to detect the position of the raw material in the drying input end; a control component, the first conveying component and the detection component are both electrically connected to the control component; the control component is configured to, when the detection component detects that the position of the raw material in the drying input end is greater than or equal to a preset position, control the conveying speed of the first conveying component to be reduced or stopped, so that the raw material accumulates at the first conveying port; the second conveying port is configured to receive the raw material overflowing from the first conveying port.

[0008] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the raw material transport component is a regenerative heat aggregate elevator, and the drying device and the second conveying component are both connected to the regenerative heat aggregate elevator.

[0009] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the second conveying port is arranged above the first conveying port and is located on one side of the first conveying port.

[0010] In one possible implementation, the raw material feeding system in the embodiment of the present application, the feeding component includes a hopper and a feeding conveyor, the hopper has an inlet, the feeding conveyor is connected to the inlet, the first conveyor port and the second conveyor port are both arranged on the hopper, and the second conveyor port is arranged on one side of the hopper and is located in the middle of the hopper.

[0011] In one possible implementation, in the raw material feeding system in the embodiment of the present application, the hopper is a semi-open hopper, the first conveying port is located below the semi-open position of the semi-open hopper, and the second conveying port is located at the semi-open position of the semi-open hopper.

[0012] In one possible implementation, in the raw material feeding system in the embodiment of the present application, the hopper has a connecting piece, the connecting piece is arranged at an angle, and a connecting channel is provided in the connecting piece, one end of the connecting channel is connected to the second conveying port, and the other end is connected to the second conveying assembly.

[0013] In one possible implementation, in the raw material feeding system in the embodiment of the present application, the first conveying component includes a first conveying member and a lifting member, one end of the first conveying member is connected to the first conveying port, and the other end is connected to the lifting member, and the lifting member is connected to the drying input end.

[0014] In one possible implementation, in the raw material feeding system in the embodiment of the present application, the second conveying component includes a second conveying member and an output member, one end of the second conveying member is connected to the second conveying port, and the other end is connected to the output member, and the output member is connected to the raw material transport component.

[0015] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the drying device has a drying output end, and the drying output end is connected to the output member or the drying output end is connected to the raw material transport component.

[0016] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the drying input end is tilted, the drying input end has an input channel, and the detection element is arranged in the input channel for detecting the position of the raw material in the input channel.

[0017] On the other hand, the present application provides a control method for a raw material feeding system, which is used in the raw material feeding system of any one of the above embodiments, and the method includes:

[0018] The raw materials in the feeding component of the system are transported from the first conveying port to the raw material transport component via the first conveying component, the drying input end and the drying device in sequence; the raw materials overflowing from the first conveying port are transported to the raw material transport component via the second conveying port and the second conveying component; the position of the raw materials in the drying input end is detected; the conveying speed of the first conveying component is controlled according to the position of the raw materials in the drying input end, and when the position of the raw materials is greater than or equal to the preset position, the conveying speed of the first conveying component is controlled to be reduced or stopped so that the raw materials are accumulated at the first conveying port; the second conveying port is configured to receive the raw materials overflowing from the first conveying port.

[0019] In addition, the present application also provides an asphalt station, which includes the raw material feeding system of any one of the above embodiments.

[0020] The raw material feeding system, control method and asphalt station provided by the present application are provided with: a feeding component having a first conveying port and a second conveying port corresponding to the first conveying port; a first conveying component connected to the first conveying port; a drying device having a drying input end, the drying input end being connected to the first conveying component; a second conveying component connected to the second conveying port; a raw material transport component, the second conveying component being connected to the raw material transport component; a detection component for detecting the position of the raw material in the drying input end; and a control component, the first conveying component and the detection component being electrically connected to the control component. Diversion is achieved through the first conveying port and the second conveying port. During normal production, the raw material transported by the feeding component is transported from the first conveying port to the drying device through the first conveying component. When the feeding amount increases, the position of the raw materials in the drying input end is detected by the detection component, and the first conveying component is linked to realize diversion through the second conveying port, that is, when the position of the raw materials is greater than or equal to the preset position, the control component controls the conveying speed of the first conveying component to reduce or stop, so that the raw materials are accumulated at the first conveying port; when the raw materials are accumulated to a certain height, the second conveying port receives the raw materials overflowing from the first conveying port, and conveys them to the raw material transport component through the second conveying component, thereby realizing the dynamic balance of the feeding and avoiding the overflow of raw materials or the blockage of the drying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 A schematic diagram of the structure of a raw material feeding system provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 A detailed enlarged view of part A;

[0024] Figure 3 A flow chart of a control method for a raw material feeding system provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 100-feeding assembly;

[0027] 110 - hopper; 111 - first delivery port; 112 - second delivery port; 113 - inlet; 114 - connection piece;

[0028] 120-feeding conveyor;

[0029] 200-first conveying assembly;

[0030] 210-first conveying member;

[0031] 220-lifting piece;

[0032] 300-drying device; 311-drying input end; 312-drying output end;

[0033] 400 - second conveying assembly; 410 - second conveying member; 420 - output member;

[0034] 500-Raw material transport components;

[0035] 600-test pieces;

[0036] 700-Control parts.

[0037] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] It should be noted that in the description of the embodiments of the present application, terms such as "upper", "lower", "inside" and "outside" indicating orientation or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description, and do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0040] In addition, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. First, the relevant concepts or nouns involved in this application are explained:

[0042] Hot mix: refers to a construction method that uses hot mix equipment to heat the raw materials to a certain temperature and then mix them evenly. For example, a certain proportion of recycled materials and asphalt are heated to a specified temperature and then mixed evenly. Recycled materials refer to all raw materials that can be recycled in industry and can be used again through a certain processing process. For example, waste materials from asphalt pavement are processed into recycled materials through hot mixing.

[0043] After reaching the design service life, the overall performance of asphalt pavement declines and it is difficult to meet road demand. However, through asphalt recycling technology, the waste can be recycled and reused, so that the raw materials can meet the pavement design requirements again and save production costs. Hot mix asphalt mixture is the main raw material for the current asphalt concrete pavement construction. It is obtained by mixing new materials and recycled materials in proportion. Among them, the recycled materials are obtained by hot mixing or cold mixing using waste materials.

[0044] In the prior art, waste materials from asphalt plants are directly transported to the delivery inlet of the drying drum by a conveyor belt and heated by the drying drum. However, when the delivery volume increases, it will cause overflow at the delivery inlet, and in severe cases, it will even cause the drum to be blocked, causing the drying drum to fail to operate normally.

[0045] In view of this, the present application provides a raw material feeding system, control method and asphalt station, the feeding system includes: a feeding component, having a first conveying port and a second conveying port corresponding to the first conveying port; a first conveying component, connected to the first conveying port; a drying device, having a drying input end, the drying input end is connected to the first conveying component; a second conveying component, connected to the second conveying port; a raw material transport component, the second conveying component is connected to the raw material transport component; a detection component, used to detect the position of the raw material in the drying input end; a control component, the first conveying component and the detection component are both electrically connected to the control component. Diversion is achieved through the first conveying port and the second conveying port. During normal production, the raw materials transported by the feeding component are from the first conveying port to the drying device through the first conveying component. When the feeding amount increases, the position of the raw materials in the drying input end is detected by the detection component, and the first conveying component is linked to realize diversion through the second conveying port, that is, when the position of the raw materials is greater than or equal to the preset position, the control component controls the conveying speed of the first conveying component to reduce or stop, so that the raw materials are accumulated at the first conveying port; when the raw materials are accumulated to a certain height, the second conveying port receives the raw materials overflowing from the first conveying port, and conveys them to the raw material transport component through the second conveying component, thereby realizing the dynamic balance of the feeding and avoiding the overflow of raw materials or the blockage of the drying device.

[0046] Combine the following Figures 1 to 3 The present application is described in detail with reference to the accompanying drawings and specific embodiments.

[0047] On the one hand, the present application provides a raw material feeding system, including: a feeding assembly 100, the feeding assembly 100 has a first conveying port 111 and a second conveying port 112 corresponding to the first conveying port 111; a first conveying assembly 200, the first conveying assembly 200 is connected to the first conveying port 111; a drying device 300, the drying device 300 has a drying input end 311, and the drying input end 311 is connected to the first conveying assembly 200; a second conveying assembly 400, the second conveying assembly 400 is connected to the second conveying port 112; a raw material transport assembly 500, the drying device 300 and the second conveying assembly 400 are connected to the second conveying port 112; The conveying components 400 are connected to the raw material transport components 500; the detection component 600 is used to detect the position of the raw material in the drying input end 311; the control component 700, the first conveying component 200 and the detection component 600 are electrically connected to the control component 700; the control component 700 is configured to control the conveying speed of the first conveying component 200 to be reduced or stopped when the detection component 600 detects that the position of the raw material in the drying input end 311 is greater than or equal to a preset position, so that the raw material is accumulated at the first conveying port 111; the second conveying port 112 is configured to receive the raw material overflowing from the first conveying port 111.

[0048] Specifically, the loading assembly 100 has a first conveying port 111 and a second conveying port 112. The first conveying port 111 is connected to the first conveying assembly 200, the first conveying assembly 200 is connected to the drying device 300, and the drying device 300 is connected to the raw material transport assembly 500. The first conveying port 111 and the second conveying port 112 can be opened or closed by a switch to divert the flow. Of course, the diversion can also be achieved according to the layout of its own structure and position. For example, the first conveying port 111 is located at the bottom, and the second conveying port 112 is located above the first conveying port 111. A tilted baffle is provided on one side of the second conveying port 112 to prevent the raw materials from mistakenly entering the second conveying port 112 during normal production.

[0049] The raw material feeding system in the embodiment of the present application realizes diversion through the first conveying port and the second conveying port. During normal production, the raw materials conveyed by the feeding component are conveyed from the first conveying port to the drying device through the first conveying component. When the conveying amount of the feeding increases, the position of the raw materials in the drying input end is detected by the detection component, and the first conveying component is linked to realize diversion through the second conveying port, that is, when the position of the raw material is greater than or equal to the preset position, the control component controls the conveying speed of the first conveying component to reduce or stop, so that the raw materials are accumulated at the first conveying port; when the raw materials are accumulated to a certain height, the second conveying port receives the raw materials overflowing from the first conveying port, and conveys them to the raw material transportation component through the second conveying component, thereby realizing the dynamic balance of the feeding and avoiding the overflow of raw materials or clogging of the drying device.

[0050] The present application does not limit the structure of the raw material transport component 500. It should be noted that the diverted raw materials can be transported to other places via belts or other types of transport components, or transported to a designated place for subsequent production movement or transportation, and can also be used for thermal regeneration via a regenerative hot aggregate elevator.

[0051] Illustratively, in the raw material feeding system in the embodiment of the present application, the raw material transport component 500 is a regenerative heat aggregate elevator, and the drying device 300 and the second conveying component 400 are both connected to the regenerative heat aggregate elevator.

[0052] It should be noted that the diverted raw materials can continue to be used for production, that is, the drying device 300 and the second conveying assembly 400 are connected to the regenerative heat aggregate elevator to facilitate the subsequent production of raw materials. For example, during normal production, the raw materials conveyed by the feeding assembly 100 are conveyed from the first conveying port 111 to the regenerative heat aggregate elevator for production through the first conveying assembly 200 and the drying device 300 in sequence. When the conveying amount of the feeding material increases, that is, when the position of the raw material is greater than or equal to the preset position, the control component 700 controls the conveying speed of the first conveying assembly 200 to decrease or stop, so that the raw materials are accumulated at the first conveying port 111; when the raw materials are accumulated to a certain height, the second conveying port 112 receives the raw materials overflowing from the first conveying port 111, and conveys them to the regenerative heat aggregate elevator for production through the second conveying assembly 400, so that the diverted raw materials can continue to be used for production, saving production costs and recycling resources.

[0053] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the second conveying port 112 is disposed above the first conveying port 111 and is located on one side of the first conveying port 111 .

[0054] Exemplarily, the first delivery port 111 is located at the bottom of the loading assembly 100, and the second delivery port 112 is located in the middle of the loading assembly 100. Alternatively, the first delivery port 111 is located at the lower side of the loading assembly 100, and the second delivery port 112 is located at the upper side of the loading assembly 100, as long as the second delivery port 112 can receive the raw materials overflowing from the first delivery port 111, the embodiment of the present application is not limited to this.

[0055] It can be understood that the conveying speed of the first conveying component 200 is reduced or stopped, causing the raw materials to accumulate at the first conveying port 111, and as time goes by, the stacking height of the raw materials continues to rise. When the stacking height exceeds or reaches the position of the second conveying port 112, it is diverted to the second conveying component 400 through the second conveying port 112, thereby preventing the raw materials from accumulating and overflowing at the entrance of the drying device 300, thereby reducing the operating pressure of the drying device 300.

[0056] In one possible implementation, in the raw material feeding system in the embodiment of the present application, the feeding component 100 includes a hopper 110 and a feeding conveyor 120, the hopper 110 has an inlet 113, the feeding conveyor 120 is connected to the inlet 113, the first conveying port 111 and the second conveying port 112 are both arranged on the hopper 110, and the second conveying port 112 is arranged on one side of the hopper 110 and is located in the middle of the hopper 110.

[0057] The first conveying port 111 is disposed at the bottom of the hopper 110 , the inlet 113 is disposed at the top of the hopper 110 , and the second conveying port 112 is disposed at one side of the hopper 110 and is located in the middle of the hopper 110 .

[0058] The hopper 110 may be a semi-open hopper, the first conveying port 111 is located below the semi-open hopper and is cone-shaped, and the second conveying port 112 is located at the semi-open position of the semi-open hopper.

[0059] An inlet is provided at the top of the hopper 110 to facilitate the input of raw materials. The bottom of the hopper 110 is conical, which facilitates the raw materials to slide naturally down to the first conveying port 111 by gravity for output. The second conveying port is located in a semi-open position, which can convey raw materials from a specific direction, play a role in diversion, reduce raw material accumulation and blockage, and improve feeding efficiency and stability.

[0060] The hopper 110 has a connecting piece 114 which is tilted and has a connecting channel therein. One end of the connecting channel is connected to the second conveying port 112 , and the other end is connected to the second conveying assembly 400 .

[0061] Exemplarily, the hopper 110 includes a body and a connector 114, the connector 114 is located on one side of the body, the inlet 113, the first delivery port 111 and the second delivery port 112 are all arranged on the body, one end of the connector 114 is connected to the second delivery port 112, and the other end is connected to the second delivery member 410, and the first delivery port 111 is located in the middle of the body. The connector 114 is tilted to provide a certain guiding effect, so as to facilitate the smooth delivery of raw materials and reduce jamming.

[0062] In one possible implementation, in the raw material feeding system in the embodiment of the present application, the first conveying component 200 includes a first conveying member 210 and a lifting member 220, one end of the first conveying member 210 is connected to the first conveying port 111, and the other end is connected to the lifting member 220, and the lifting member 220 is connected to the drying input end 311.

[0063] The first conveying member 210 can be a variable frequency feeding belt. According to the position of the raw material detected by the detection member 600, the rotation speed of the variable frequency feeding belt is automatically slowed down to reduce the operating load of the drying device 300 and avoid material blockage or overflow. In addition, a driving roller and a tensioning roller are respectively provided at both ends of the variable frequency feeding belt. The driving roller is driven by a motor and a transmission device. The transmission device can be a belt drive or a gear drive to provide power for the operation of the belt, and the tensioning roller can adjust the position to ensure that the tension of the belt is within a suitable range, and ensure that there is sufficient friction between the belt and the driving roller to avoid slipping. By controlling the rotation speed of the driving roller, the speed of the variable frequency feeding belt can be adjusted.

[0064] In one possible implementation, in the raw material feeding system in the embodiment of the present application, the second conveying component 400 includes a second conveying member 410 and an output member 420, one end of the second conveying member 410 is connected to the second conveying port 112, and the other end is connected to the output member 420, and the output member 420 is connected to the raw material transport component 500.

[0065] The second conveying member 410 is a transition belt, the output member 420 is located at the bottom of the drying device 300, and the drying device 300 is a drying drum. The transition belt can be an annular rubber or plastic conveyor belt, and the surface of the transition belt has an anti-skid structure to ensure smooth transportation of the raw materials. By adjusting the speed of the first conveying member 210, the raw materials are accumulated at the first conveying port 111. When the raw materials are accumulated to a certain height, they can be diverted from the second conveying port 112 without the need for an additional switch device or diverting device, which has a simple structure and reduces costs.

[0066] The output member 420 may be a discharge chute, and its cross-sectional shape is rectangular or trapezoidal.

[0067] It should be noted that the first conveying member 210 may be a variable speed conveying member, and the second conveying member 410 may be a uniform speed conveying member, which is not limited in the embodiment of the present application.

[0068] The embodiment of the present application does not limit the layout of the second conveying member 410 and the output member 420, and can be designed according to the actual scene and spatial range. For example, the extension direction of the second conveying member 410 is perpendicular to the extension direction of the output member 420.

[0069] In addition, a sealing structure and a guide structure may be provided at one end of the output member 420 facing the second conveying member 410 to prevent leakage of raw materials. Moreover, if the span of the raw material conveying route involved is long, it is easy to cause the stability of the output member 420 to decrease. Reinforcement ribs or support structures may be provided on both sides or the bottom of the output member 420 to improve the overall strength and stability of the output member 420 and prevent it from deforming during long-term use.

[0070] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the drying device 300 has a drying output end 312, and the drying output end 312 is connected to the output member 420 or the drying output end 312 is connected to the raw material transport assembly 500. The drying output end 312 can be flexibly arranged and can be selectively connected to the output member 420 or the raw material transport assembly 500 according to actual conditions. For example, the drying output end 312 and the output member 420 are detachably connected.

[0071] The present application can provide a drying drum for the drying device 300. An insulation layer is provided on the outer surface of the drum to reduce heat loss. The insulation layer can be wrapped with heat-insulating materials such as rock wool and glass wool, and protected by a metal sheet. A feed port is provided at one end of the drum, which is connected to the drying input end 311, and a discharge port is provided at the other end, which is connected to the drying output end 312. Spiral blades or scrapers are provided axially inside the drum to form a drum interlayer. When the drum rotates, the material can be continuously turned and transported from the feed port to the discharge port, so that the material can be dried evenly. A heating device is provided on the outside of the drum. The heating device can be provided by a gas burner, an electric heating rod or a steam heating tube, etc., to provide heat to the inside of the drum by radiation and convection to meet the temperature conditions required for material drying.

[0072] It should be noted that the drying output end 312 can be connected to the output member 420, that is, the raw material heated by the drying device 300 and the raw material not heated by the drying device 300 are combined at the output member 420 and enter the raw material transport component 500, such as a regenerative heat aggregate elevator, for the next step of heating. The drying output end 312 can be connected to the regenerative heat aggregate elevator, that is, the raw material heated by the drying device 300 and the raw material not heated by the drying device 300 enter the raw material transport component separately.

[0073] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the first conveying member 210 is a variable frequency feeding belt, the second conveying member 410 is a transition belt, and the output member 420 is a discharge chute.

[0074] It should be noted that the embodiment of the present application does not limit the structures of the detection member 600, the hopper 110, the drying input end 311, the drying device 300, the lifting member 220, the feeding conveying member 120 and the raw material transport assembly 500. For example, the detection member 600 is a level meter, the hopper 110 is a semi-open hopper, the lifting member 220 is an elevator, the feeding conveying member 120 is a feeding belt, the drying input end 311 is a chute, the drying device 300 is a drying drum, the raw material is a regenerated cold material, and the raw material transport assembly 500 is a regenerated hot aggregate elevator.

[0075] For example, during normal production, the regenerated cold material is conveyed to the semi-open hopper by the feeding belt, and then conveyed to the elevator by the variable frequency feeding belt, and enters the interlayer of the drying drum through the chute. When the level meter on the chute detects that the cold material has accumulated to a preset height, the control unit 700 controls the speed of the variable frequency feeding belt to slow down, and the regenerated cold material continues to accumulate in the semi-open hopper. As time goes by, the accumulation height continues to rise. When the accumulation height exceeds the semi-open position, it is diverted to the transition belt, and finally merges with the unloading chute at the bottom of the drying drum through the transition belt to the regenerated hot aggregate elevator. When the material level in the chute is detected to return to normal, the control unit 700 controls the speed of the variable frequency feeding belt to resume, thereby achieving dynamic balance of material feeding and avoiding blockage or overflow.

[0076] It should be noted that the variable frequency feeding belt at the bottom of the semi-open hopper is variable frequency controlled, which is convenient for timely adjustment of the discharge speed and has a sensitive and timely response. The semi-open hopper, relying on its own structure, realizes the diversion of overflow, has a simple structure and reduces costs.

[0077] In a possible implementation, in the raw material feeding system in the embodiment of the present application, the drying input end 311 is tilted, the drying input end 311 has an input channel, and the detection element 600 is arranged in the input channel for detecting the position of the raw material in the input channel.

[0078] Specifically, the drying input end 311 is inclined, and the inclined surface inside the drying input end 311 has a certain guiding effect, which facilitates smooth material feeding. The inclination angle of the drying input end 311 can be set according to the actual material transportation and drying requirements, and the embodiment of the present application does not limit this. For example, the inclination angle of the drying input end 311 is 15 degrees, 45 degrees, 60 degrees, etc.

[0079] The cross section of the input channel can be rectangular, circular or trapezoidal, which is not limited in the present embodiment. The inner wall of the input channel is smooth to reduce the friction of the raw material during transportation and make the feeding smooth. In addition, the input channel can also be provided with a guide structure, such as an arc-shaped guide surface.

[0080] On the other hand, the present application provides a control method for a raw material feeding system, which is used for the raw material feeding system of any one of the above embodiments.

[0081] S100, the raw materials in the loading assembly 100 of the system are transported from the first conveying port 111 to the raw material transport assembly 500 through the first conveying assembly 200, the drying input end 311 and the drying device 300 in sequence; the raw materials overflowing from the first conveying port 111 are transported to the raw material transport assembly 500 through the second conveying port 112 and the second conveying assembly 400. It should be noted that in normal production, the raw materials only enter the first conveying port 111, and when the conveying volume increases, the raw materials are diverted to enter the second conveying port 112 by linking the first conveying assembly 200.

[0082] S200, detecting the position of the raw material in the drying input end 311. For example, the detection member 600 is disposed at the drying input end 311 of the drying device 300, and the detection member 600 can be a material level meter to detect the position of the raw material in the drying input end 311, such as the material level of the raw material.

[0083] S300, according to the position of the raw materials in the drying input end 311, the conveying speed of the first conveying component 200 is controlled; when the position of the raw materials is greater than or equal to the preset position, the conveying speed of the first conveying component 200 is controlled to be reduced or stopped, so that the raw materials are accumulated in the first conveying port 111; the second conveying port 112 is configured to receive the raw materials overflowing from the first conveying port 111.

[0084] The control member 700, the first conveying assembly 200 and the detection member 600 are all electrically connected to the control member 700. During normal production, the raw material passes through the first conveying port 111 of the loading assembly 100, passes through the first conveying assembly 200 and the drying device 300 in sequence, and is transported to the raw material transport assembly 500 for production. When too much raw material is loaded into the drying drum interlayer of the drying device 300, the detection member 600 monitors in real time. When the detection member 600 detects that the material level rises to a position that can be monitored by the detection member 600, such as a level meter, it will immediately link the first conveying component 200, such as linking the variable frequency feeding belt of the first conveying component 200 to automatically slow down its speed, so that the raw material is continuously accumulated in the first conveying port 111 and the height is increased. When the raw material accumulates to the second conveying port 112, it is diverted to the second conveying port 112, through the second conveying component 400 to the raw material transport component 500, until the detection member 600 detects that the position of the raw material is less than the preset value, the speed of the first conveying component 200 returns to normal, thereby achieving dynamic balance of material loading and avoiding raw material overflow or blockage.

[0085] In addition, the present application also provides an asphalt station, which includes the raw material feeding system of any one of the above embodiments.

[0086] For example, the asphalt station includes a loading component 100, a first conveying component 200, a drying device 300, a second conveying component 400, a raw material transport component 500, a detection component 600 and a control component 700. It should be noted that the raw materials diverted through the first conveying port 111 and the second conveying port 112 may flow in different directions or in the same direction, and the present application does not limit this. For example, the raw materials through the first conveying port 111 may flow to the drying device 300 for drying and heating, and the raw materials through the second conveying port 112 may flow to a storage location for storage, or flow to other processing equipment for processing, or may flow to the drying device 300 for drying and heating, or may flow to the next step or multiple steps of the drying device 300 for raw material reproduction, or may flow to the previous step or multiple steps of the drying device 300 for raw material pre-production.

[0087] Exemplarily, during normal production, the raw material is transported from the first conveying port 111 to the drying device 300 through the first conveying assembly 200 for heating, and then transported to the raw material transport assembly 500. When the raw material increases, in order to avoid blocking the drying device 300 and affecting the operation of the drying device 300, the conveying speed of the first conveying assembly 200 is reduced or stopped, so that the raw material is accumulated at the first conveying port 111. When the raw material is accumulated to a certain height, the second conveying port 112 receives the raw material overflowing from the first conveying port 111. At this time, the raw material is transported from the second conveying port 112 to the raw material transport assembly 500 through the second conveying assembly 400, thereby realizing the dynamic adjustment of the raw material feeding process. The present application does not limit the structure of the detection member 600. Exemplarily, the detection member 600 can be a level meter or a position sensor. Among them, the raw material can be waste material of asphalt pavement, recycled material, or new asphalt material, and the present application does not limit this. After considering the specification and practicing the invention disclosed here, those skilled in the art will easily think of other embodiments of the present application. This application is intended to cover any variation, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The description and examples are to be regarded as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0088] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A raw material feeding system, characterized in that: include: A loading component (100), the loading component (100) comprising a first delivery port (111) and a second delivery port (112) corresponding to the first delivery port (111); A first conveying assembly (200), the first conveying assembly (200) being in communication with the first conveying port (111); A drying device (300), the drying device (300) having a drying input end (311), the drying input end (311) being connected to the first conveying assembly (200); A second conveying assembly (400), the second conveying assembly (400) being in communication with the second conveying port (112); A raw material transport component (500), wherein the second conveying component (400) is connected to the raw material transport component (500); A detection member (600) for detecting the position of the raw material in the drying input end (311); A control member (700), wherein the first conveying assembly (200) and the detection member (600) are both electrically connected to the control member (700); The control component (700) is configured to control the conveying speed of the first conveying component (200) to decrease or stop when the detection component (600) detects that the position of the raw material in the drying input end (311) is greater than or equal to a preset position, so that the raw material is accumulated at the first conveying port (111); The second delivery port (112) is configured to receive raw materials overflowing from the first delivery port (111).

2. The raw material feeding system according to claim 1, characterized in that: The raw material transport component (500) is a regenerative heat aggregate elevator, and the drying device (300) and the second conveying component (400) are both connected to the regenerative heat aggregate elevator.

3. The raw material feeding system according to claim 1, characterized in that: The second conveying port (112) is arranged above the first conveying port (111) and is located on one side of the first conveying port (111).

4. The raw material feeding system according to claim 1, characterized in that: The feeding assembly (100) comprises a hopper (110) and a feeding conveying member (120); the hopper (110) has an inlet (113); the feeding conveying member (120) is connected to the inlet (113); the first conveying port (111) and the second conveying port (112) are both arranged on the hopper (110); the first conveying port (111) is arranged on one side of the hopper (110) and is located in the middle of the hopper (110).

5. The raw material feeding system according to claim 4, characterized in that: The hopper (110) is a semi-open hopper, the first conveying port (111) is located below a semi-open position of the semi-open hopper, and the second conveying port (112) is located at a semi-open position of the semi-open hopper.

6. The raw material feeding system according to claim 5, characterized in that: The hopper (110) has a connecting piece (114) which is arranged at an angle. The connecting piece (114) has a connecting channel in it. One end of the connecting channel is connected to the second conveying port (112), and the other end is connected to the second conveying assembly (400).

7. The raw material feeding system according to any one of claims 1 to 6, characterized in that: The first conveying component (200) comprises a first conveying member (210) and a lifting member (220), one end of the first conveying member (210) is connected to the first conveying port (111), and the other end is connected to the lifting member (220), and the lifting member (220) is connected to the drying input end (311).

8. The raw material feeding system according to claim 7, characterized in that: The second conveying component (400) comprises a second conveying member (410) and an output member (420); one end of the second conveying member (410) is connected to the second conveying port (112), and the other end is connected to the output member (420); and the output member (420) is connected to the raw material transport component (500).

9. The raw material feeding system according to claim 8, characterized in that: The drying device (300) has a drying output end (312), and the drying output end (312) is connected to the output member (420) or the drying output end (312) is connected to the raw material transport component (500).

10. The raw material feeding system according to any one of claims 1 to 6, characterized in that: The drying input end (311) is arranged at an angle, and the drying input end (311) has an input channel. The detection element (600) is arranged in the input channel and is used to detect the position of the raw material in the input channel.

11. A control method for a raw material feeding system, used for the raw material feeding system according to any one of claims 1 to 10, characterized in that: The method comprises: The raw materials in the loading component (100) of the system are transported from the first conveying port (111) to the raw material transport component (500) via the first conveying component (200), the drying input end (311) and the drying device (300) in sequence; the raw materials overflowing from the first conveying port (111) are transported to the raw material transport component (500) via the second conveying port (112) and the second conveying component (400); Detecting the position of the raw material in the drying input end (311); Controlling the conveying speed of the first conveying component (200) according to the position of the raw material in the drying input end (311); when the position of the raw material is greater than or equal to a preset position, controlling the conveying speed of the first conveying component (200) to decrease or stop, so that the raw material is accumulated at the first conveying port (111); The second delivery port (112) is configured to receive raw materials overflowing from the first delivery port (111).

12. An asphalt station, characterized in that: The asphalt station comprises the raw material loading system as described in any one of claims 1 to 10 above.

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