Raw material filling device

Abstract

The application relates to a raw material filling device, which comprises a plurality of receiving tanks, a first liquid level sensor arranged in each receiving tank, the first liquid level sensor being used for outputting an electric signal representing the storage state of the receiving tank; a filling pipeline, which comprises a main pipeline and a plurality of branch pipelines connected to the main pipeline, the main pipeline receiving raw material from a discharge tank car and filling the raw material into the receiving tanks through the branch pipelines, wherein a main valve is arranged on the main pipeline, and a receiving valve is arranged on each branch pipeline; and a control unit, which receives all the electric signals and controls the opening or closing of the main valve and all the receiving valves. The application reduces or avoids the risk of raw material overflow during the filling process, effectively reduces the probability of secondary filling, thereby effectively improves the raw material filling efficiency, saves the filling time and production cost.

Description

Technical Field

[0001] This application relates to the field of semiconductor manufacturing technology, and in particular to a raw material filling device. Background Technology

[0002] In typical manufacturing processes, semiconductor or photovoltaic manufacturers usually use large unloading tank trucks for material unloading and filling. To avoid frequent filling and unloading, manufacturers design multiple receiving tanks during system construction to allow for simultaneous material unloading and filling, thereby improving production efficiency.

[0003] During the simultaneous unloading and filling of multiple receiving tanks, to prevent overflow, the filling process is terminated when the raw material in any receiving tank reaches a set high level. If there is still raw material remaining on the unloading tanker, it is necessary to wait for the liquid level in the receiving tank to drop again before refilling the remaining raw material until there is no raw material remaining on the unloading tanker. However, the existing raw material filling method is inefficient, and frequent refilling can waste a lot of time. Utility Model Content

[0004] Therefore, it is necessary to provide a raw material filling device to improve the filling efficiency of raw materials, reduce or avoid the risk of raw material overflow and the probability of secondary filling.

[0005] This application provides a raw material filling device, comprising:

[0006] Multiple receiving tanks, each receiving tank is equipped with a first liquid level sensor, which is used to output an electrical signal characterizing the receiving state of the receiving tank.

[0007] The filling pipeline includes a main pipeline and multiple branch pipelines connecting the main pipeline. The main pipeline receives raw materials from the unloading tanker and fills the raw materials into the receiving tank through the branch pipelines. A main valve is provided on the main pipeline and receiving valves are provided on the branch pipelines.

[0008] The control unit receives all electrical signals and controls the opening or closing of the main valve and all the receiving valves.

[0009] In one embodiment, the electrical signal output by the first liquid level sensor includes a first voltage signal and a second voltage signal. The first liquid level sensor outputs the first voltage signal to indicate that the receiving tank is in a fillable state, and the first liquid level sensor outputs the second voltage signal to indicate that the receiving tank is in a full state. The voltage of the second voltage signal is higher than the voltage of the first voltage signal.

[0010] In one embodiment, when all the first level sensors output a first voltage signal, the control unit opens the main valve and all the receiving valves;

[0011] When some of the first liquid level sensors output a first voltage signal and the remaining first liquid level sensors output a second voltage signal, the control unit controls the main valve and the receiving valves corresponding to all the first liquid level sensors that output the first voltage signal to be in the open state, and closes the receiving valves corresponding to all the first liquid level sensors that output the second voltage signal.

[0012] When all the first liquid level sensors output the second voltage signal, the control unit closes the main valve and all the receiving valves.

[0013] In one embodiment, the receiving tank includes a tank body with a feed inlet connected to the end of the branch pipeline away from the main pipeline.

[0014] In one embodiment, the first liquid level sensor is disposed on the inner wall of the tank and near the top of the tank.

[0015] In one embodiment, a liquid sensor is provided on the inner wall of the main pipeline. The liquid sensor is used to output an electrical signal characterizing the liquid flow state in the main pipeline. The electrical signal output by the liquid sensor includes a third voltage signal and a fourth voltage signal. When the liquid sensor outputs the third voltage signal, it indicates that there is no liquid flow in the main pipeline. When the liquid sensor outputs the fourth voltage signal, it indicates that there is liquid flow in the main pipeline, and the voltage of the fourth voltage signal is higher than the voltage of the third voltage signal.

[0016] In one embodiment, the liquid sensor is located in the main pipeline on the side of the main valve near the branch pipeline.

[0017] In one embodiment, a leakage sensor is provided at the bottom of the receiving tank. The leakage sensor is used to output an electrical signal characterizing the leakage status of the receiving tank. The electrical signal output by the leakage sensor includes a fifth voltage signal and a sixth voltage signal. When the leakage sensor outputs the fifth voltage signal, it indicates that the receiving tank has no leakage. When the leakage sensor outputs the sixth voltage signal, it indicates that the receiving tank has leakage. The voltage of the sixth voltage signal is higher than the voltage of the fifth voltage signal.

[0018] In one embodiment, when all the leakage sensors output the fifth voltage signal and the liquid sensor outputs the third voltage signal, the control unit closes the main valve and all the receiving valves;

[0019] When all the leakage sensors output the fifth voltage signal and the liquid sensor outputs the fourth voltage signal, the control unit controls the opening or closing of the main valve and the receiving valve according to the electrical signal of the first liquid level sensor;

[0020] When at least one of the leakage sensors outputs the sixth voltage signal, the control unit closes the main valve and all the receiving valves.

[0021] In one embodiment, a second liquid level sensor is further provided inside the receiving tank, and the second liquid level sensor is located on the side of the first liquid level sensor near the top of the receiving tank.

[0022] An unexpected benefit of this application is that by setting up multiple receiving tanks, the total amount of raw material received by the raw material filling device is increased, reducing or avoiding the risk of raw material overflow during the filling process. Simultaneously, the probability of secondary filling is effectively reduced, thereby significantly improving the raw material filling efficiency and saving filling time. Furthermore, by increasing the total amount of raw material received by the raw material filling device, this application helps to shorten the unloading cycle of the unloading tank truck, thereby effectively improving the utilization rate of the unloading tank truck and saving production costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a raw material filling device provided in one embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the process of unloading and filling raw material filling device provided in one embodiment of this application.

[0026] The reference numerals in the attached drawings include: 100-raw material filling device; 110-receiving tank; 110a-tank body; 110b-feed inlet; 111-first liquid level sensor; 112-second liquid level sensor; 113-leakage sensor; 120-filling pipeline; 121-main pipeline; 121a-main valve; 121b-liquid sensor; 122-branch pipeline; 122a-receiving valve; 130-control unit; C-unloading tanker; c1-discharge port. Detailed Implementation

[0027] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0029] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, parts, regions, layers, doping types, and / or portions, these elements, parts, regions, layers, doping types, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, part, region, layer, doping type, or portion from another element, part, region, layer, doping type, or portion. Therefore, without departing from the teachings of this application, the first element, component, region, layer, doping type, or portion discussed below may be represented as a second element, component, region, layer, or portion; for example, the first doping type may be referred to as the second doping type, and similarly, the second doping type may be referred to as the first doping type; the first doping type and the second doping type are different doping types, for example, the first doping type may be P-type and the second doping type may be N-type, or the first doping type may be N-type and the second doping type may be P-type.

[0030] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “under,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0031] When used herein, the singular forms of “a,” “an,” and “ / the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, in this specification, the term “and / or” includes any and all combinations of the associated listed items.

[0032] In typical manufacturing processes, semiconductor or photovoltaic manufacturers often design multiple receiving tanks in their systems to simultaneously unload and fill raw materials using large tank trucks. This avoids frequent filling and unloading, thereby improving the manufacturer's production efficiency.

[0033] During the simultaneous unloading and filling of multiple receiving tanks, to prevent overflow, the filling process is terminated when any receiving tank reaches a set high liquid level. If there is still raw material remaining on the unloading tanker, it is necessary to wait for the liquid levels in all receiving tanks at the high level to drop again before the remaining raw material in the unloading tanker can be refilled until there is no raw material remaining on the unloading tanker. However, the existing raw material filling method is inefficient, and frequent refilling can waste a lot of time.

[0034] To address the aforementioned issues, existing improvement methods mainly include the following three approaches: The first approach is to increase the volume of the receiving tank to reduce or avoid the number of secondary fillings, thereby improving production efficiency; the second approach is to reduce the volume of the unloading tanker to reduce or avoid the situation where the receiving tank is filled, thereby reducing the number of secondary fillings required; the third approach is to combine multiple receiving tanks into a larger receiving tank to reduce or avoid the situation where the receiving tank is filled.

[0035] However, among the aforementioned improvement methods, the first method leads to increased construction costs, the second method leads to increased filling frequency, and the third method increases the space required for storing raw materials, also leading to increased construction costs. Therefore, it is necessary to provide a raw material filling device that, without increasing construction costs, effectively improves the filling efficiency of raw materials, reduces or avoids the risk of raw material overflow, and decreases the probability of secondary filling.

[0036] Figure 1 This is a schematic diagram of the raw material filling device provided in one embodiment of this application. (See also...) Figure 1 One embodiment of this application provides a raw material filling device 100, which includes multiple receiving tanks 110, filling pipelines 120, and a control unit 130. Each receiving tank 110 is equipped with a first liquid level sensor 111, which outputs an electrical signal characterizing the storage status of the receiving tank 110. The filling pipeline 120 includes a main pipeline 121 and multiple branch pipelines 122 connecting to the main pipeline 121. The main pipeline 121 receives raw materials from the unloading tanker C and fills the receiving tanks 110 with the raw materials through the branch pipelines 122. A main valve 121a is provided on the main pipeline 121, and receiving valves 122a are provided on the branch pipelines 122. The control unit 130 receives all electrical signals and controls the opening or closing of the main valve 121a and all receiving valves 122a.

[0037] The process of unloading and filling raw materials using the raw material filling device described above includes: opening the main valve 121a and all receiving valves 122a, receiving the raw materials in the unloading tanker C through the main pipeline 121, and filling the raw materials into each receiving storage tank 110 through each branch pipeline 122.

[0038] During the unloading and filling process of raw materials, the first liquid level sensor 111 in each receiving tank 110 monitors the liquid level status in the receiving tank 110 at all times. When the first liquid level sensor 111 detects liquid (the liquid is, for example, raw materials), it means that the raw materials in the receiving tank 110 have been filled to the horizontal height of the first liquid level sensor 111. It can also be understood that the receiving tank 110 is in a high liquid level state. If the raw materials are continued to be filled, there is a risk of overflow.

[0039] At this time, the first liquid level sensor 111 sends an electrical signal. After receiving the electrical signal from the first liquid level sensor 111, the control unit 130 closes the receiving valve 122a corresponding to the receiving tank 110 that is in a high liquid level state, so as to avoid the receiving tank 110 in a high liquid level state from overflowing. At the same time, it ensures that other receiving tanks 110 that have not reached a high liquid level state can continue to receive raw materials from the unloading tank truck C, thereby improving the utilization rate of the receiving tanks.

[0040] When all receiving tanks 110 reach a high liquid level, or when there is no remaining raw material in the unloading tanker C, filling is completed, and the control unit 130 controls the main valve 121a and all receiving valves 122a to close.

[0041] As can be seen, the raw material filling device described above, by setting up multiple receiving tanks, increases the total amount of raw material received by the device, reduces or avoids the risk of raw material overflow during the filling process, and effectively reduces the probability of secondary filling, thereby effectively improving the raw material filling efficiency and saving filling time. Furthermore, by increasing the total amount of raw material received by the filling device, this application helps to shorten the unloading cycle of the unloading tanker, thereby effectively improving the utilization rate of the unloading tanker and saving production costs.

[0042] Continue reading Figure 1 In one embodiment, the receiving tank 110 includes a tank body 110a, on which a feed inlet 110b is provided, and the feed inlet 110b is connected to the end of the branch pipeline 122 away from the main pipeline 121. Optionally, the raw material includes a fluid liquid material.

[0043] In one embodiment, the end of the branch pipe furthest from the main pipe is welded to the inlet of the receiving tank to reduce or avoid the risk of leakage at the connection between the branch pipe and the receiving tank. In other embodiments of this application, the branch pipe and the receiving tank can also be connected in a detachable manner. For example, one end of the branch pipe can be connected to the inlet using flanges, clips, or threaded connections to improve the flexibility between the various parts of the raw material filling device. Those skilled in the art can choose appropriate connection methods according to actual conditions, and this application does not impose any limitations on this.

[0044] See Figure 1 In one embodiment, the feed inlet 110b is located at the top of the tank 110a so that the raw material in the branch pipe 122 can be filled into the tank 110a under the action of gravity. In other embodiments of this application, the feed inlet can be set on the inner wall of the tank near the top of the tank, or set in other parts of the tank according to the actual application. This is common knowledge known to those skilled in the art, and will not be elaborated here.

[0045] Continue reading Figure 1 In one embodiment, a first liquid level sensor 111 is disposed on the inner wall of the tank 110a and near the top of the tank 110a. For example, the first liquid level sensor 111 may be disposed at the liquid level corresponding to the maximum capacity of the receiving tank 110, so as to determine the storage status (or whether it is in a high liquid level state) of the receiving tank 110 by whether the first liquid level sensor 111 detects liquid.

[0046] In other embodiments of this application, the position of the first liquid level sensor can also be adjusted according to actual needs. For example, the first liquid level sensor can be set on the inner wall at a certain height below the top of the receiving tank to ensure that the receiving tank is not completely filled when the first liquid level sensor detects liquid. This reduces or avoids the situation where the raw material continues to fill the receiving tank during the period after the first liquid level sensor issues a high liquid level warning signal and before the corresponding receiving valve closes, thereby improving the fault tolerance rate of the raw material filling process.

[0047] In one embodiment, the electrical signal output by the first liquid level sensor includes a first voltage signal and a second voltage signal. The first liquid level sensor outputs the first voltage signal to indicate that the receiving tank is in a fillable state, and the first liquid level sensor outputs the second voltage signal to indicate that the receiving tank is in a full state, and the voltage of the second voltage signal is higher than the voltage of the first voltage signal.

[0048] Accordingly, the process of the control unit opening and closing the main valve and the receiving valve according to the electrical signal output by the first liquid level sensor includes: when all the first liquid level sensors output a first voltage signal, the control unit opens the main valve and all receiving valves; when some of the first liquid level sensors output a first voltage signal and the remaining first liquid level sensors output a second voltage signal, the control unit controls the main valve and the receiving valves corresponding to all the first liquid level sensors that output the first voltage signal to be in the open state, and closes the receiving valves corresponding to all the first liquid level sensors that output the second voltage signal; when all the first liquid level sensors output the second voltage signal, the control unit closes the main valve and all receiving valves.

[0049] See Figure 1 In one embodiment, a second liquid level sensor 112 is also provided inside the receiving tank 110, and the second liquid level sensor 112 is located on the side of the first liquid level sensor 111 near the top of the receiving tank 110. Alternatively, the second liquid level sensor 112 is positioned at a higher level within the receiving tank 110 than the first liquid level sensor 111 is within the receiving tank 110.

[0050] It should be noted that by installing a second liquid level sensor inside the receiving tank and ensuring that the second liquid level sensor is at a higher level than the first liquid level sensor, a safety protection function can be achieved, thereby reducing or avoiding the probability of overflow caused by the failure of the first liquid level sensor and improving the reliability and safety of the raw material filling device.

[0051] It should also be emphasized that the second liquid level sensor is also used to output an electrical signal characterizing the storage status of the receiving tank. In one embodiment, the electrical signal output by the second liquid level sensor includes a seventh voltage signal and an eighth voltage signal. The second liquid level sensor outputs the seventh voltage signal to indicate that the receiving tank is in a fillable state, and the second liquid level sensor outputs the eighth voltage signal to indicate that the receiving tank is in a full state, and the voltage of the eighth voltage signal is higher than the voltage of the seventh voltage signal.

[0052] Accordingly, the process of the control unit opening and closing the main valve and receiving valve based on the electrical signals output by the first and second level sensors includes: when all first level sensors output a first voltage signal and all second level sensors output a seventh voltage signal, the control unit opens the main valve and all receiving valves; when all first level sensors output a second voltage signal and all second level sensors output an eighth voltage signal, the control unit closes the main valve and all receiving valves; when some first level sensors in the receiving tanks output a second voltage signal and / or some second level sensors in the receiving tanks output an eighth voltage signal, the control unit closes the receiving valves corresponding to the receiving tanks where either the first level sensor outputs a second voltage signal or the second level sensor outputs an eighth voltage signal, while keeping the remaining receiving valves and the main valve in the open state.

[0053] Continue reading Figure 1 In one embodiment, the unloading tanker C is provided with a discharge port c1, and the end of the main pipeline 121 away from the branch pipeline 122 is connected to the discharge port c1. Optionally, the discharge port c1 and the end of the main pipeline 121 away from the branch pipeline 122 are detachably connected. For example, the discharge port c1 and the main pipeline 121 can be connected by a flange, a snap-fit, or a thread. In other embodiments of this application, a suitable connection method can be selected according to actual needs. Alternatively, the end of the main pipeline away from the branch pipeline can also extend into the unloading tanker from the discharge port to transfer the raw materials in the unloading tanker to the receiving storage tank. This application does not limit this.

[0054] In one embodiment, a liquid sensor 121b is provided on the inner wall of the main pipeline 121. Optionally, the liquid sensor 121b is located inside the main pipeline 121 on the side of the main valve 121a near the branch pipeline 122. It should be noted that the liquid sensor 121b is used to monitor whether there is liquid flowing in the main pipeline 121, and the electrical signal generated by the liquid sensor 121b is also transmitted to the control unit 130 so that the control unit 130 can monitor the filling status of the raw materials according to the actual situation in the main pipeline 121.

[0055] In one embodiment, the liquid sensor is used to output an electrical signal characterizing the liquid flow state in the main pipeline. The electrical signal output by the liquid sensor includes a third voltage signal and a fourth voltage signal. When the liquid sensor outputs the third voltage signal, it is used to characterize that there is no liquid flow in the main pipeline. When the liquid sensor outputs the fourth voltage signal, it is used to characterize that there is liquid flow in the main pipeline, and the voltage of the fourth voltage signal is higher than the voltage of the third voltage signal.

[0056] See Figure 1In one embodiment, a leak sensor 113 is provided at the bottom of the receiving tank 110 to determine whether there is a leak in the receiving tank 110. Optionally, a leak sensor 113 is provided at the bottom of each receiving tank 110 to monitor whether there is a leak in all receiving tanks 110 in the raw material filling device 100.

[0057] In one embodiment, the leak sensor is used to output an electrical signal characterizing the leak status of the receiving tank. The electrical signal output by the leak sensor includes a fifth voltage signal and a sixth voltage signal. When the leak sensor outputs the fifth voltage signal, it is used to characterize that the receiving tank has no leak. When the leak sensor outputs the sixth voltage signal, it is used to characterize that the receiving tank has a leak. The voltage of the sixth voltage signal is higher than the voltage of the fifth voltage signal.

[0058] Accordingly, the process of the control unit opening and closing the main valve and receiving valve based on the electrical signals output by the level sensor and the leakage sensor includes: when all leakage sensors output a fifth voltage signal and the liquid sensor outputs a third voltage signal, the control unit closes the main valve and all receiving valves; when all leakage sensors output a fifth voltage signal and the liquid sensor outputs a fourth voltage signal, the control unit controls the opening or closing of the main valve and receiving valve based on the electrical signal of the first level sensor (or the first level sensor and the second level sensor); when at least one leakage sensor outputs a sixth voltage signal, the control unit closes the main valve and all receiving valves.

[0059] It is important to emphasize that regardless of the status of the raw material filling device, if any leak sensor detects a leak, the main valve and all receiving valves of the raw material filling device will close. If any leak sensor detects a leak during the filling process, the filling will end. Optionally, when any leak sensor detects a leak, the control unit will issue a warning message to prompt personnel to carry out maintenance, thereby reducing or avoiding economic and time losses caused by leaks.

[0060] Figure 2 This is a schematic diagram illustrating the process of unloading and filling materials using a material filling device provided in one embodiment of this application. (In conjunction with...) Figure 1 and Figure 2 As can be seen, in one embodiment, the process of receiving raw materials from the unloading tanker C using the raw material filling device 100 is as follows.

[0061] First, the control unit 130 opens the main valve 121a and all receiving valves 122a, allowing the raw material in the unloading tanker C to be transferred from the discharge port c1 to the main pipeline 121, and then through the main pipeline 121 and multiple branch pipelines 122 to multiple receiving storage tanks 110. During the above process, the liquid sensor 121b detects in real time whether there is raw material (the raw material is a liquid) passing through the main pipeline, and the leakage sensor 113 detects whether there is leakage in all receiving storage tanks 110.

[0062] It should be noted that if the liquid sensor 121b does not detect any raw material passing through the main pipeline, it indicates that there is no remaining raw material in the unloading tanker C. In this case, the control unit 130 closes the main valve 121a and all receiving valves 122a, and the filling process ends. If the liquid sensor 121b detects that raw material has passed through the main pipeline, and at least one leak sensor 113 detects liquid, it indicates that there is a leak in the receiving tank 110 of the raw material filling device 100. The control unit 130 closes the main valve 121a and all receiving valves 122a, and the filling process ends. The control unit 130 can also issue a prompt message to remind the staff to inspect the receiving tank 110 in the raw material filling device 100. If the liquid sensor 121b detects that raw material has passed through the main pipeline and all the leakage sensors 113 do not detect liquid, it means that there is no leakage problem in all the receiving tanks 110. The control unit 130 controls the main valve 121a and all the receiving valves 122a to be in the open state to ensure the smooth progress of the raw material filling process.

[0063] Next, during the process of receiving raw materials from the unloading tanker C using the raw material filling device 100, the first liquid level sensor 111 in all receiving tanks 110 constantly monitors the liquid level in the receiving tanks 110. When the first liquid level sensor 111 detects liquid, it indicates that the receiving tank 110 corresponding to the first liquid level sensor 111 is in a high liquid level state (or the receiving tank 110 is full). The first liquid level sensor 111 sends an electrical signal to the control unit 130. The control unit 130 closes the receiving valve 122a corresponding to the receiving tank 110 in the high liquid level state according to the received electrical signal, so as to ensure the continuation of the filling process while avoiding overflow of the receiving tank 110 in the high liquid level state. When all receiving tanks 110 are in a high liquid level state, regardless of whether there is raw material remaining in the unloading tanker C, the control unit 130 will close all receiving valves 122a and end the current filling process to avoid raw material overflow.

[0064] It should be noted that when a second liquid level sensor 112 is installed in the receiving tank 110, when at least one of the first liquid level sensor 111 and the second liquid level sensor 112 in the receiving tank 110 detects liquid, the control unit 130 will close the receiving valve 122a corresponding to the current receiving tank 110 to improve the safety and fault tolerance of the raw material filling device.

[0065] An unexpected benefit of this application is that by setting up multiple receiving tanks, the total amount of raw material received by the raw material filling device is increased, reducing or avoiding the risk of raw material overflow during the filling process. Simultaneously, the probability of secondary filling is effectively reduced, thereby significantly improving the raw material filling efficiency and saving filling time. Furthermore, by increasing the total amount of raw material received by the raw material filling device, this application helps to shorten the unloading cycle of the unloading tank truck, thereby effectively improving the utilization rate of the unloading tank truck and saving production costs.

[0066] In the description of this specification, the references to terms such as "some embodiments," "other embodiments," "ideal embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A raw material filling device, characterized in that, include: Multiple receiving tanks, each receiving tank is equipped with a first liquid level sensor, which is used to output an electrical signal characterizing the receiving state of the receiving tank. The filling pipeline includes a main pipeline and multiple branch pipelines connecting the main pipeline. The main pipeline receives raw materials from the unloading tanker and fills the raw materials into the receiving tank through the branch pipelines. A main valve is provided on the main pipeline and receiving valves are provided on the branch pipelines. The control unit receives all electrical signals and controls the opening or closing of the main valve and all the receiving valves.

2. The raw material filling device according to claim 1, characterized in that, The electrical signal output by the first liquid level sensor includes a first voltage signal and a second voltage signal. When the first liquid level sensor outputs the first voltage signal, it indicates that the receiving tank is in a fillable state. When the first liquid level sensor outputs the second voltage signal, it indicates that the receiving tank is in a full state, and the voltage of the second voltage signal is higher than the voltage of the first voltage signal.

3. The raw material filling device according to claim 2, characterized in that, When all the first liquid level sensors output the first voltage signal, the control unit opens the main valve and all the receiving valves; When some of the first liquid level sensors output a first voltage signal and the remaining first liquid level sensors output a second voltage signal, the control unit controls the main valve and the receiving valves corresponding to all the first liquid level sensors that output the first voltage signal to be in the open state, and closes the receiving valves corresponding to all the first liquid level sensors that output the second voltage signal. When all the first liquid level sensors output the second voltage signal, the control unit closes the main valve and all the receiving valves.

4. The raw material filling device according to claim 1, characterized in that, The receiving tank includes a tank body, on which a feed inlet is provided, and the feed inlet is connected to the end of the branch pipeline away from the main pipeline.

5. The raw material filling device according to claim 4, characterized in that, The first liquid level sensor is disposed on the inner wall of the tank and near the top of the tank.

6. The raw material filling device according to claim 1, characterized in that, A liquid sensor is installed on the inner wall of the main pipeline. The liquid sensor is used to output an electrical signal characterizing the liquid flow status in the main pipeline. The electrical signal output by the liquid sensor includes a third voltage signal and a fourth voltage signal. When the liquid sensor outputs the third voltage signal, it indicates that there is no liquid flow in the main pipeline. When the liquid sensor outputs the fourth voltage signal, it indicates that there is liquid flow in the main pipeline, and the voltage of the fourth voltage signal is higher than the voltage of the third voltage signal.

7. The raw material filling device according to claim 6, characterized in that, The liquid sensor is located in the main pipeline on the side of the main valve near the branch pipeline.

8. The raw material filling device according to claim 6, characterized in that, A leakage sensor is installed at the bottom of the receiving tank. The leakage sensor is used to output an electrical signal that characterizes the leakage status of the receiving tank. The electrical signal output by the leakage sensor includes a fifth voltage signal and a sixth voltage signal. When the leakage sensor outputs the fifth voltage signal, it indicates that the receiving tank has no leakage. When the leakage sensor outputs the sixth voltage signal, it indicates that the receiving tank has leakage. The voltage of the sixth voltage signal is higher than that of the fifth voltage signal.

9. The raw material filling device according to claim 8, characterized in that, When all the leakage sensors output the fifth voltage signal and the liquid sensor outputs the third voltage signal, the control unit closes the main valve and all the receiving valves; When all the leakage sensors output the fifth voltage signal and the liquid sensor outputs the fourth voltage signal, the control unit controls the opening or closing of the main valve and the receiving valve according to the electrical signal of the first liquid level sensor; When at least one of the leakage sensors outputs the sixth voltage signal, the control unit closes the main valve and all the receiving valves.

10. The raw material filling device according to claim 1, characterized in that, The receiving tank is also equipped with a second liquid level sensor, and the second liquid level sensor is located on the side of the first liquid level sensor near the top of the receiving tank.

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