Method for replacing filter cloth of vacuum filter

Abstract

The invention discloses a method for replacing filter cloth of a vacuum filter, the vacuum filter is provided with the filter cloth, and the method for replacing the filter cloth of the vacuum filter comprises the following steps: controlling the vacuum filter to be powered off; superposing the tail end of the filter cloth and one end of the filter cloth to be replaced to form a superposing area; a plurality of connecting pieces are controlled to be arranged at intervals in the length direction of the filter cloth to be replaced, and each connecting piece is arranged in the overlapping area in a penetrating mode so that the filter cloth can be connected with the filter cloth to be replaced; controlling the vacuum filter to be electrified and run so as to enable the filter cloth to drive the filter cloth to be replaced to move; acquiring first current state information of the filter cloth and second current state information of the filter cloth to be replaced; according to the first current state information and the second current state information, the vacuum filter is controlled to continue to work or be powered off. According to the replacement method of the filter cloth of the vacuum filter, the replacement time of the filter cloth can be saved, and the replacement efficiency of the filter cloth is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum filters, and in particular to a method for replacing filter cloth of a vacuum filter. Background Art

[0002] At present, the competition in the cold-rolled strip market is becoming increasingly fierce, and the surface quality of the product is particularly important. In the current production of the pickling mill, due to the limitation of continuous high-speed production, the cleanliness requirements for the emulsion are extremely high, especially for the emulsion of the finished product rack. In order to increase its cleanliness, the emulsion used in the finished product rack is equipped with a vacuum filter.

[0003] The vacuum filter is provided with filter cloth. When a roll of filter cloth is used up and a new filter cloth is to be replaced, it is usually bound along the width direction of the new filter cloth. This makes it difficult to replace the new filter cloth, and local bulges will appear at the connection between the new and old filter cloths, which will then scratch the internal equipment of the vacuum filter during operation, causing the connection between the new and old filter cloths to tear and break, and also causing damage to the internal equipment of the vacuum filter. At this time, the filter cloth accumulates inside the vacuum filter, and it takes a lot of manpower, material resources and time to clean the filter cloth accumulated in the vacuum filter. During the cleaning process, the vacuum filter is in a stopped state and cannot play a filtering role, which affects the surface quality of the strip steel, and the surface of the strip steel will have product quality defects such as rubbing marks, black spots and black spots. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a method for replacing the filter cloth of a vacuum filter, which can save replacement time, improve replacement efficiency, and at the same time, help reduce the risk of breakage at the connection between the filter cloth and the filter cloth to be replaced.

[0005] According to the method for replacing the filter cloth of a vacuum filter in an embodiment of the present application, the vacuum filter is provided with a filter cloth, and the method for replacing the filter cloth of the vacuum filter includes: controlling the vacuum filter to be powered off; overlapping the tail end of the filter cloth with one end of the filter cloth to be replaced to form an overlapping area; controlling multiple connecting parts to be arranged at intervals along the length direction of the filter cloth to be replaced, and each of the connecting parts is passed through the overlapping area to connect the filter cloth and the filter cloth to be replaced; controlling the vacuum filter to be powered on so that the filter cloth drives the filter cloth to be replaced to move; obtaining first current state information of the filter cloth and second current state information of the filter cloth to be replaced; and controlling the vacuum filter to continue working or to be powered off according to the first current state information and the second current state information.

[0006] According to the method for replacing the filter cloth of the vacuum filter of the embodiment of the present application, the filter cloth and the filter cloth to be replaced are connected by connecting pieces arranged at intervals along the length direction of the filter cloth to be replaced, so as to reduce the difficulty of setting the connecting pieces, thereby reducing the difficulty of connecting the filter cloth and the filter cloth to be replaced, thereby saving replacement time and improving replacement efficiency. At the same time, the connecting pieces are arranged at intervals along the length direction of the filter cloth to be replaced, which can avoid local bulges at the connection between the filter cloth and the filter cloth to be replaced. In this way, the risk of the connection between the filter cloth and the filter cloth to be replaced scratching the internal equipment of the vacuum filter can be reduced, thereby reducing the risk of breakage at the connection between the filter cloth and the filter cloth to be replaced.

[0007] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, controlling the power-on operation of the vacuum filter so that the filter cloth drives the filter cloth to be replaced to move includes: obtaining the current ambient temperature; and controlling the power-on operation time of the vacuum filter according to the current ambient temperature.

[0008] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, controlling the power-on operation time of the vacuum filter according to the current ambient temperature includes: when the current ambient temperature is greater than a preset temperature, controlling the power-on operation time of the vacuum filter to a first preset time.

[0009] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, controlling the power-on running time of the vacuum filter according to the current ambient temperature includes: when the current ambient temperature is less than or equal to the preset temperature, controlling the power-on running time of the vacuum filter to be a second preset time, and the second preset time is less than the first preset time.

[0010] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, controlling the vacuum filter to continue working or to cut off power according to the first current state information and the second current state information includes: when the first current state information and / or the second current state information are tilted, controlling the vacuum filter to continue to cut off power.

[0011] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, controlling the vacuum filter to continue working or to cut off power according to the first current state information and the second current state information includes: when the first current state information and / or the second current state information are not tilted, controlling the vacuum filter to continue working.

[0012] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, the method for replacing the filter cloth of a vacuum filter also includes: when the vacuum filter continues to work until the overlapping area extends from the outlet of the vacuum filter, controlling the vacuum filter to cut off power; and cutting off the connection between the overlapping area and the filter cloth to be replaced.

[0013] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, the vacuum filter is provided with a filter cloth collecting cart, which is located at the outlet of the vacuum filter and is used to receive the filter cloth. The method for replacing the filter cloth of the vacuum filter also includes: moving the filter cloth collecting cart to below the outlet of the vacuum filter for receiving the cut filter cloth.

[0014] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, overlapping the tail end of the filter cloth with one end of the filter cloth to be replaced to form an overlapping area includes: controlling the length of the overlapping area to be a first preset length; controlling the two sides of the filter cloth in the width direction to be aligned with the two sides of the filter cloth in the width direction to be replaced.

[0015] According to the method for replacing the filter cloth of a vacuum filter in some embodiments of the present application, the connecting member is located on at least one side in the width direction of the overlapping area.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of a vacuum filter according to some embodiments of the present application;

[0019] Figure 2 Schematic diagram of the connection between the filter cloth and the filter cloth to be replaced according to some embodiments of the present application;

[0020] Figure 3 Schematic diagram of a method for replacing filter cloth of a vacuum filter according to some embodiments of the present application Figure 1 ;

[0021] Figure 4 Schematic diagram of a method for replacing filter cloth of a vacuum filter according to some embodiments of the present application Figure 2 .

[0022] Reference numerals:

[0023] Vacuum filter 10,

[0024] Filter cloth 1, filter cloth to be replaced 2, overlapping area 3, connecting piece 4;

[0025] Inlet turning roller 51, turning roller 52, outlet turning roller 53, endless chain belt 54, filter cloth collecting vehicle 6. DETAILED DESCRIPTION

[0026] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0027] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0028] At present, the competition in the cold-rolled strip market is becoming increasingly fierce, and the surface quality of the product is particularly important. In the current production of the pickling mill, due to the limitation of continuous high-speed production, the cleanliness requirements for the emulsion are extremely high, especially for the emulsion of the finished product rack. In order to increase its cleanliness, the emulsion used in the finished product rack is equipped with a vacuum filter.

[0029] The vacuum filter is provided with filter cloth. When a roll of filter cloth is used up and a new filter cloth is to be replaced, it is usually bound along the width direction of the new filter cloth. This makes it difficult to replace the new filter cloth, and local bulges will appear at the connection between the new and old filter cloths, which will then scratch the internal equipment of the vacuum filter during operation, causing the connection between the new and old filter cloths to tear and break, and also causing damage to the internal equipment of the vacuum filter. At this time, the filter cloth accumulates inside the vacuum filter, and it takes a lot of manpower, material resources and time to clean the filter cloth accumulated in the vacuum filter. During the cleaning process, the vacuum filter is in a stopped state and cannot play a filtering role, which affects the surface quality of the strip steel, and the surface of the strip steel will have product quality defects such as rubbing marks, black spots and black spots.

[0030] In this regard, the present application proposes a method for replacing the filter cloth of a vacuum filter, such as Figure 1 As shown, the vacuum filter 10 has an inlet and an outlet, and an inlet steering roller 51 is provided at the inlet, and an outlet steering roller 53 is provided at the outlet. A plurality of steering rollers 52 are spaced apart between the inlet steering roller 51 and the outlet steering roller 53. The endless chain belt 54 is transmission-connected with the inlet steering roller 51, the steering roller 52 and the outlet steering roller 53. The filter cloth 1 is suitable for being installed on the endless chain belt 54. The running motor drives the inlet steering roller 51, the steering roller 52 and the outlet steering roller 53 to rotate to drive the endless chain belt 54 to drive. In this way, the endless chain belt 54 drives the filter cloth 1 to move from the inlet to the outlet.

[0031] like Figure 3 As shown, the method for replacing the filter cloth of the vacuum filter includes:

[0032] S10: Control the vacuum filter 10 to cut off power; to ensure safety when replacing the filter cloth 1.

[0033] S20 : ​​overlapping the tail end of the filter cloth 1 with one end of the filter cloth 2 to be replaced to form an overlapping area 3 .

[0034] S30: controlling the plurality of connectors 4 to be arranged at intervals along the length direction of the filter cloth 2 to be replaced, and each connector 4 is provided in the overlapping area 3 to connect the filter cloth 1 and the filter cloth 2 to be replaced.

[0035] It is understandable that if Figure 2 As shown, the tail end of the filter cloth 1 is overlapped with one end of the filter cloth 2 to be replaced, and then each connecting member 4 is passed through the overlapping area 3 to connect the filter cloth 1 and the filter cloth 2 to be replaced, wherein the connecting member 4 can be a staple. Since multiple connecting members 4 are arranged at intervals along the length direction of the filter cloth 2 to be replaced, local bulges can be avoided at the connection between the filter cloth 1 and the filter cloth 2 to be replaced. In this way, the risk of the connection between the filter cloth 1 and the filter cloth 2 to be replaced scratching the internal equipment of the vacuum filter 10 can be reduced, thereby reducing the risk of breakage at the connection between the filter cloth 1 and the filter cloth 2 to be replaced.

[0036] It is worth noting that this connection method has a fast splicing speed, and the splicing time is about 5 minutes, which saves about 10 minutes compared with horizontal splicing, saves about 50% of binding connection materials, and effectively prevents the filter cloth 1 interface from being torn and disconnected.

[0037] S40: Controlling the vacuum filter 10 to be powered on so that the filter cloth 1 drives the filter cloth 2 to be replaced to move;

[0038] S50: Acquire first current state information of the filter cloth 1 and second current state information of the filter cloth to be replaced 2;

[0039] S60: Control the vacuum filter 10 to continue working or to cut off power according to the first current state information and the second current state information.

[0040] In this way, whether the operation of the filter cloth 1 and the filter cloth to be replaced 2 is skewed can be judged based on the first current state information of the filter cloth 1 and the second current state information of the filter cloth to be replaced 2, thereby achieving corresponding control of the vacuum filter 10.

[0041] According to the method for replacing the filter cloth of the vacuum filter of the embodiment of the present application, the filter cloth 1 and the filter cloth to be replaced 2 are connected by connecting members 4 arranged at intervals along the length direction of the filter cloth to be replaced 2, so as to reduce the difficulty of setting the connecting members 4, thereby reducing the difficulty of connecting the filter cloth 1 and the filter cloth to be replaced 2, thereby saving replacement time and improving replacement efficiency. At the same time, the connecting members 4 are arranged at intervals along the length direction of the filter cloth to be replaced 2, which can avoid local bulges at the connection between the filter cloth 1 and the filter cloth to be replaced 2. In this way, the risk of the connection between the filter cloth 1 and the filter cloth to be replaced 2 scratching the internal equipment of the vacuum filter 10 can be reduced, thereby reducing the risk of breakage at the connection between the filter cloth 1 and the filter cloth to be replaced 2.

[0042] In some embodiments, controlling the vacuum filter 10 to be powered on so that the filter cloth 1 drives the filter cloth 2 to be replaced to move includes:

[0043] Get the current ambient temperature;

[0044] The power-on operation time of the vacuum filter 10 is controlled according to the current ambient temperature.

[0045] It can be understood that the step after controlling the vacuum filter 10 to be powered on so that the filter cloth 1 drives the filter cloth 2 to be replaced to move is to obtain the first current state information and the second current state information, and the filter cloth 1 has different flexibility and hardness under different ambient temperature conditions. If the filter cloth 1 has high flexibility and low hardness, the vacuum filter 10 can be controlled to run for a longer time and then obtain the first current state information of the filter cloth 1 and the second current state information of the filter cloth 2 to be replaced. If the filter cloth 1 has low flexibility and high hardness, the vacuum filter 10 can be controlled to run for a shorter time, that is, to obtain the first current state information of the filter cloth 1 and the second current state information of the filter cloth 2 to be replaced, so as to improve the accuracy of the first current state information and the second current state information.

[0046] In this way, it is convenient to control the power-on operation time of the vacuum filter 10 according to the current ambient temperature, so as to improve the accuracy of the first current state information and the second current state information.

[0047] In some embodiments, controlling the power-on operation time of the vacuum filter 10 according to the current ambient temperature includes:

[0048] When the current ambient temperature is greater than the preset temperature, the power-on operation time of the vacuum filter 10 is controlled to be the first preset time.

[0049] It can be understood that the preset temperature may refer to the room temperature when the flexibility and hardness of the filter cloth 1 are relatively balanced. When the current ambient temperature is greater than the preset temperature, it means that the filter cloth 1 has higher flexibility and lower hardness. At this time, the vacuum filter 10 can be controlled to run for a longer time and then obtain the first current state information of the filter cloth 1 and the second current state information of the filter cloth 2 to be replaced to improve the accuracy of the first current state information and the second current state information.

[0050] In some embodiments, controlling the power-on operation time of the vacuum filter 10 according to the current ambient temperature includes:

[0051] When the current ambient temperature is less than or equal to the preset temperature, the power-on operation time of the vacuum filter 10 is controlled to be a second preset time, and the second preset time is less than the first preset time.

[0052] It can be understood that the preset temperature may refer to the room temperature when the flexibility and hardness of the filter cloth 1 are relatively balanced. When the current ambient temperature is lower than the preset temperature, it means that the flexibility of the filter cloth 1 is lower and the hardness is higher. At this time, the operating time of the vacuum filter 10 can be controlled to be the second preset time. Since the second preset time is shorter than the first preset time, the operating time of the vacuum filter 10 is shorter, that is, the first current state information of the filter cloth 1 and the second current state information of the filter cloth 2 to be replaced are obtained to improve the accuracy of the first current state information and the second current state information.

[0053] In some embodiments, controlling the vacuum filter 10 to continue operating or to power off according to the first current state information and the second current state information includes:

[0054] When the first current state information and / or the second current state information is inclined, the vacuum filter 10 is controlled to continue to be powered off.

[0055] It can be understood that when the first current state information and / or the second current state information appear tilted, it indicates that the filter cloth 1 and / or the filter cloth 2 to be replaced appear tilted. At this time, the vacuum filter 10 is powered off to facilitate the operator to adjust the filter cloth 1 and the filter cloth 2 to be replaced in time.

[0056] In some embodiments, controlling the vacuum filter 10 to continue operating or to power off according to the first current state information and the second current state information includes:

[0057] When the first current state information and / or the second current state information does not show any inclination, the vacuum filter 10 is controlled to continue operating.

[0058] It is understandable that when the first current state information and / or the second current state information do not show any tilt, it indicates that the filter cloth 1 and / or the filter cloth to be replaced 2 do not show any tilt. At this time, the vacuum filter 10 is controlled to continue working to proceed to the next step.

[0059] In some embodiments, as Figure 3 As shown, the method for replacing the filter cloth of the vacuum filter also includes:

[0060] S70: When the vacuum filter 10 continues to work until the overlapping area 3 extends out of the outlet of the vacuum filter 10, the vacuum filter 10 is controlled to be powered off;

[0061] S80: Cutting the connection between the overlapping area 3 and the filter cloth 2 to be replaced.

[0062] In this way, the connection between the overlapping area 3 and the filter cloth 2 to be replaced can be cut off in time, thereby facilitating the timely recycling of the used filter cloth 1.

[0063] In some embodiments, the vacuum filter 10 is provided with a filter cloth collection vehicle 6, which is located at the outlet of the vacuum filter 10 and is used to receive the filter cloth 1. The method for replacing the filter cloth of the vacuum filter further includes:

[0064] The filter cloth collecting vehicle 6 is moved to the bottom of the outlet of the vacuum filter 10 to receive the cut filter cloth 1 .

[0065] Therefore, by setting up the filter cloth collection vehicle 6, the used filter cloth 1 can be recycled in time.

[0066] In some embodiments, in order to prevent the filter cloth 1 that naturally falls from the outlet of the vacuum filter 10 from being deflected and unable to enter the filter cloth collecting cart 6, a 2200 mm long and 20 mm thick guard plate can be vertically installed along the direction from the outlet of the vacuum filter 10 to the filter cloth collecting cart 6 to ensure that the filter cloth 1 falls accurately into the filter cloth collecting cart 6.

[0067] In some embodiments, overlapping the tail end of the filter cloth 1 with one end of the filter cloth 2 to be replaced to form the overlapping area 3 includes:

[0068] Controlling the length of the overlapping area 3 to be a first preset length;

[0069] The two sides of the filter cloth 1 in the width direction are controlled to be aligned with the two sides of the filter cloth 2 to be replaced in the width direction.

[0070] In this way, the arrangement of the filter cloth 1 and the filter cloth to be replaced 2 is more neat, so as to ensure the subsequent operation of the vacuum filter 10, reduce the risk of the connection between the filter cloth 1 and the filter cloth to be replaced 2 scratching the internal equipment of the vacuum filter 10, and further reduce the risk of breakage at the connection between the filter cloth 1 and the filter cloth to be replaced 2.

[0071] In some embodiments, as Figure 2 As shown, the connecting member 4 is located on at least one side of the overlapping area 3 in the width direction.

[0072] For example, a plurality of connectors 4 spaced apart along the length direction of the filter cloth 2 to be replaced are provided on both sides of the re-overlapping area 3 in the width direction, so as to enhance the connection stability between the filter cloth 1 and the filter cloth 2 to be replaced.

[0073] Please refer to the following Figure 4 The method for replacing the filter cloth of the vacuum filter of some embodiments of the present application is described as follows:

[0074] (1) Tool preparation: Prepare tools related to replacing filter cloth 1, including scissors, stapler, adjustable wrench, etc.

[0075] (2) Adjust the docking position of the old filter cloth 1 (filter cloth 1 in this application): manually operate the vacuum filter 10 to stop the tail of the old filter cloth 1 1 meter to the inlet of the vacuum filter 10, and manually operate the filter cloth 1 to stop the tail 1 meter at the inlet turning roller 51.

[0076] (3) Powering off the equipment: After the filter cloth 1 is stopped, the vacuum filter 10 is powered off as a whole.

[0077] (4) Place the new filter cloth 1 (the filter cloth 2 to be replaced in this application) in the use position: Place the new filter cloth 1 from the standby position to the use position.

[0078] (5) Press the tail of the old filter cloth 1 against the head of the new filter cloth 1: Press the tail of the old filter cloth 1 against the head of the new filter cloth 1 by about 600 mm.

[0079] (6) Align the two side edges of the new and old filter cloths 1: Align the two side edges of the filter cloth 1 and the filter cloth 2 to be replaced.

[0080] (7) Staple longitudinally along both sides of the overlap: Staple longitudinally along both sides of the overlap of the new and old filter cloths 1. The stapling length must be consistent with the overlap, which is 600 mm. The stapling width must be no less than 30 mm. Avoid overlapping wrinkles when stapling. Staple in 3 columns, with a spacing of about 10 mm between each column. Use 30-40 staples on one side.

[0081] (8) Start the equipment: After the equipment is assembled, start the vacuum filter 10. It is understood that the weather is humid from April to October, and the filter cloth 1 has high flexibility. After running for about 10 minutes, stop the operation and check the status of the new and old filter cloths 1 for any deviation. If there is no abnormality, continue to run. In other months, the weather is dry, and the flexibility of the filter cloth 1 decreases and the hardness increases. After running for 7 minutes, stop the operation and check the status of the filter cloth 1 for any deviation. If there is no abnormality, run for another 7 minutes, stop the operation and check the status of the filter cloth 1 again for any deviation. If there is no abnormality, continue to run. If deviation is found during operation, stop the operation immediately, manually operate the filter cloth 1 to run backward, and manually adjust the filter cloth 1 to the middle position before continuing to run forward.

[0082] (9) During operation, check the deflection of filter cloth 1 and filter cloth 2 to be replaced.

[0083] (10) When the connection runs to the filter outlet of the vacuum filter 10, the vacuum filter 10 is controlled to stop running and the connection is cut off.

[0084] (11) Normal operation of the equipment: Turn on the automatic mode of the vacuum filter 10 and operate normally.

[0085] This connection method ensures that the connection between the filter cloth 1 and the filter cloth 2 to be replaced remains flat, the connection part of the filter cloth 1 fits tightly, and the filter cloth 1 can maintain stable and reliable operation when moving forward without scratching the internal equipment of the vacuum filter 10. It avoids the filter cloth 1 being torn and broken due to scratches, which may cause drainage, slot cover, etc.

[0086] This connection method is fast, taking about 5 minutes to complete, which saves about 10 minutes compared to horizontal splicing, and saves about 50% of binding materials. It effectively prevents the connection between the filter cloth 1 and the filter cloth to be replaced 2 from being torn or disconnected.

[0087] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0088] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0089] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0090] Obviously, those skilled in the art may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims of this specification and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. A method for replacing a filter cloth of a vacuum filter, wherein the vacuum filter (10) is provided with a filter cloth (1), characterized in that: The method for replacing the filter cloth of the vacuum filter comprises: Controlling the vacuum filter (10) to cut off power; Overlapping the tail end of the filter cloth (1) with one end of the filter cloth (2) to be replaced to form an overlapping area (3); Controlling a plurality of connecting members (4) to be arranged at intervals along the length direction of the filter cloth (2) to be replaced, and each of the connecting members (4) is arranged through the overlapping area (3) to connect the filter cloth (1) and the filter cloth (2) to be replaced; Controlling the vacuum filter (10) to be powered on so that the filter cloth (1) drives the filter cloth (2) to be replaced to move; Acquiring first current state information of the filter cloth (1) and second current state information of the filter cloth (2) to be replaced; The vacuum filter (10) is controlled to continue working or be powered off according to the first current state information and the second current state information.

2. The method for replacing the filter cloth of a vacuum filter according to claim 1, characterized in that: The controlling of the vacuum filter (10) to be powered on so that the filter cloth (1) drives the filter cloth (2) to be replaced to move includes: Get the current ambient temperature; The power-on operation time of the vacuum filter (10) is controlled according to the current ambient temperature.

3. The method for replacing the filter cloth of a vacuum filter according to claim 2, characterized in that: The controlling of the power-on operation time of the vacuum filter (10) according to the current ambient temperature comprises: When the current ambient temperature is greater than a preset temperature, the power-on operation time of the vacuum filter (10) is controlled to be a first preset time.

4. The method for replacing the filter cloth of a vacuum filter according to claim 3, characterized in that: The controlling of the power-on operation time of the vacuum filter (10) according to the current ambient temperature comprises: When the current ambient temperature is less than or equal to a preset temperature, the power-on operation time of the vacuum filter (10) is controlled to be a second preset time, and the second preset time is less than the first preset time.

5. The method for replacing the filter cloth of a vacuum filter according to claim 4, characterized in that: The controlling the vacuum filter (10) to continue working or to cut off power according to the first current state information and the second current state information comprises: When the first current state information and / or the second current state information is tilted, the vacuum filter (10) is controlled to continue to be powered off.

6. The method for replacing the filter cloth of a vacuum filter according to claim 5, characterized in that: The controlling the vacuum filter (10) to continue working or to cut off power according to the first current state information and the second current state information comprises: When the first current state information and / or the second current state information does not show any inclination, the vacuum filter (10) is controlled to continue working.

7. The method for replacing the filter cloth of a vacuum filter according to claim 6, characterized in that: The method for replacing the filter cloth of the vacuum filter also includes: When the vacuum filter (10) continues to work until the overlapping area (3) extends out of the outlet of the vacuum filter (10), controlling the vacuum filter (10) to be powered off; The connection between the overlapping area (3) and the filter cloth (2) to be replaced is cut.

8. The method for replacing filter cloth of a vacuum filter according to claim 7, characterized in that: The vacuum filter (10) is provided with a filter cloth collecting vehicle (6), the filter cloth collecting vehicle (6) being located at the outlet of the vacuum filter (10) and being used to receive the filter cloth (1), and the method for replacing the filter cloth of the vacuum filter further comprises: The filter cloth collecting vehicle (6) is moved to below the outlet of the vacuum filter (10) to receive the cut filter cloth (1).

9. The method for replacing filter cloth of a vacuum filter according to any one of claims 1 to 8, characterized in that: The step of overlapping the tail end of the filter cloth (1) with one end of the filter cloth (2) to be replaced to form an overlapping area (3) comprises: controlling the length of the overlapping area (3) to be a first preset length; The two sides of the filter cloth (1) in the width direction are controlled to be aligned with the two sides of the filter cloth (2) to be replaced in the width direction.

10. The method for replacing filter cloth of a vacuum filter according to claim 1, wherein: The connecting member (4) is located on at least one side of the overlapping area (3) in the width direction.

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