A continuous vacuum feeder

Abstract

The present invention relates to the technical field of vacuum feeders, and discloses a continuous vacuum feeder, the device comprising a body assembly, a filter assembly is arranged inside the body assembly, a cleaning assembly is arranged on the filter assembly, a spray assembly is arranged on one side of the body assembly, the filter assembly comprises a filter core, a plurality of filter holes are arranged on the surface of the filter core, a guide tube is arranged above the filter core, and a gas flow sensor is arranged on the guide tube. In the process of vacuum feeding of the body assembly, the present invention separates the material from the air through the filter assembly, and in order to avoid the filter assembly from clogging and affecting the normal operation of the vacuum feeding, the filter assembly is cleaned in time through the cooperation of the cleaning assembly and the spray assembly, thereby improving the ability to cope with the blockage of the filter core during use and improving the working efficiency of the vacuum feeder.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum feeders, in particular to a continuous vacuum feeder. Background Art

[0002] A vacuum loader is a dust-free, closed pipeline conveying equipment that uses vacuum suction to transport granular and powdered materials. It uses the pressure difference between the vacuum and the ambient space to form gas flow in the pipeline, drive the movement of powdered materials, and thus complete the transportation of powders. Therefore, chemical powder materials are transported through a continuous vacuum loader. This transportation method can eliminate dust environmental pollution, improve the working environment, reduce environmental and personnel pollution to materials, and improve cleanliness. At the same time, the vacuum loader can reduce manual labor intensity and improve work efficiency.

[0003] For example, a new vacuum loader is disclosed in a Chinese patent with application number 2022109680397, which includes a feed bin, a top cover, a drop bin, a sealing cone, a filtering device, a first cleaning device and a second cleaning device. It does not need to be disassembled for cleaning, and can be cleaned online, which is convenient for cleaning. However, during the filtering process, the filter element is easily blocked. Once the filter element is blocked, the vacuum degree in the suction pipe will gradually decrease, and the suction pipe will gradually become unable to suck the material. If you want to transport it smoothly, you have to frequently take out the filter element, clean it or replace it.

[0004] For example, a Chinese patent with application number 2013101926046 discloses a continuous vacuum feeder, including a feed bin and a discharge bin arranged at the lower part thereof, a feed port is arranged on one side of the feed bin, a pneumatic suction butterfly valve is arranged on the feed port, a discharge hopper is arranged between the feed bin and the discharge bin, a convex top plate valve is movably arranged at the bottom of the discharge hopper, a discharge port is arranged at the bottom of the discharge bin, a pneumatic discharge butterfly valve is arranged on the discharge port, and a filter bin is also arranged on the upper part of the feed bin. The purpose of the device is to provide an intermittent continuous vacuum feeder that can continuously feed materials, has high conveying efficiency, does not waste vacuum sources, and keeps suction and discharge in a uniform and unobstructed state. However, the material is blocked by the filter element, and part of the material will adhere to the filter element. If the material has high adhesion, the filter element cleaning effect will be poor during blowing.

[0005] Based on the above scheme, the material is blocked by the filter element, and part of the material will adhere to the filter element. Due to the different types of materials, the adhesion of the materials is also different. If the adhesion of the materials is large, the cleaning effect of the filter element will be poor. Since the blockage of the filter elements at different positions is different, the existing device cannot detect the blockage degree of the filter elements at different positions in real time and clean them in time. At the same time, the blockage of the filter element will reduce the vacuum degree in the feed pipe, thereby reducing its suction capacity. Summary of the invention

[0006] In view of the above problems, the present invention provides a continuous vacuum loader to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a continuous vacuum feeder, comprising a body assembly, a filter assembly is arranged inside the body assembly, a cleaning assembly is arranged on the filter assembly, and a blowing assembly is arranged on one side of the body assembly;

[0008] The filter assembly comprises a filter core, a surface of the filter core is provided with a plurality of filter holes, a flow guide tube is provided above the filter core, and a gas flow sensor is provided on the flow guide tube;

[0009] The cleaning assembly comprises a fixing frame, an elastic sleeve is arranged below the fixing frame, a cleaning frame is arranged at one end of the elastic sleeve away from the fixing frame, a cleaning brush is arranged at the center of the surface of the cleaning frame, and a cylinder is arranged on one side of the fixing frame.

[0010] The present invention can determine the blockage condition of the filter element by detecting the gas flow rate discharged from the guide pipe and calculating the difference between A and B, and then cleans the filter element according to different conditions through the cleaning component and the blowing component, thereby improving the ability to cope with blockages during the use of the filter element and improving the working efficiency of the vacuum feeder. In addition, through the coordination of structures such as the cylinder, the cleaning frame, and the elastic sleeve, the elongation of the elastic sleeve on the filter element is changed, thereby adjusting the distribution of gas inside the feed bin, thereby accelerating the suction force of the gas near the feed pipe, thereby improving the vacuum degree in the feed pipe, enhancing the suction capacity of the feed pipe, and avoiding affecting the normal suction of the vacuum feeder due to the blockage of the filter element.

[0011] Preferably, the cleaning brush is annular and is adapted to fit the outer surface of the filter element;

[0012] The cleaning brush is provided with a plurality of bristles, and the plurality of bristles are arranged in a ring shape on the surface of the cleaning brush.

[0013] Preferably, there are two cylinders, which are respectively arranged on both sides of the elastic sleeve, and the output ends of the cylinders are connected to the cleaning frame.

[0014] Preferably, a through groove is provided at the position where the fixing frame is connected to the filter core, and the filter core passes through the elastic sleeve and extends to the outside of the cleaning frame.

[0015] Preferably, the filter assembly also includes a mounting frame, which is connected to the top surface of the fixing frame, and a plurality of mounting grooves are provided on the surface of the mounting frame. A mounting seat is provided inside the mounting groove, and the filter element is provided at the center position of the surface of the mounting seat, and the inner wall of the mounting seat is connected to the outer surface of the filter element.

[0016] Preferably, the body assembly includes a feed bin, the inner wall of which is connected to the mounting frame, a lower hopper is provided below the feed bin, a fan is provided at one end of the lower hopper away from the feed bin, an outlet is provided at one end of the fan away from the lower hopper, and a top cover is provided at one end of the feed bin away from the lower hopper.

[0017] Preferably, a vacuum tube is provided on the surface of the top cover, and a vacuum pump is provided at one end of the vacuum tube away from the top cover;

[0018] A feed pipe is arranged on one side of the feed bin, a conveying pipeline is arranged on one end of the feed pipe away from the feed bin, and an air hammer is arranged on the surface of the lower hopper.

[0019] Preferably, the blowing assembly includes a gas tank, a plurality of output pipes are arranged above the gas tank, a pulse valve is arranged at one end of the output pipe away from the gas tank, an air supply pipe is arranged at one end of the pulse valve away from the output pipe, an injection pipe is arranged below the air supply pipe, an injection nozzle is arranged at one end of the injection pipe away from the air supply pipe, and a control valve is arranged on the injection pipe.

[0020] Preferably, there are multiple air supply pipes, and the multiple air supply pipes are linearly arranged above the filter element, and there are multiple air injection pipes, and the multiple air injection pipes are arranged on the air supply pipes at intervals, and the positions of the air injection pipes correspond one-to-one to the positions of the filter element.

[0021] Preferably, a bracket is provided below the gas tank, the bracket is connected to the outer surface of the feed bin, and a positioning hole is provided at the position where the air supply pipe is connected to the feed bin.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the process of vacuum feeding of the body components of the present invention, the material and the air are separated by the filter component. In order to avoid the clogging of the filter component and affect the normal operation of the vacuum feeding, the filter component is cleaned in time by the cooperation of the cleaning component and the blowing component to ensure the continuous feeding of the body components.

[0024] 2. The present invention can determine the blockage condition of the filter element by detecting the gas flow discharged from the guide tube and calculating the difference between A and B, and then clean the filter element according to different conditions through the cleaning component and the spray component, thereby improving the filter element's ability to cope with blockage during use, effectively solving the problem of taking out the filter element for cleaning or replacing it due to blockage, and improving the working efficiency of the vacuum loader.

[0025] 3. The present invention changes the elongation of the elastic sleeve on the filter element through the coordination of structures such as the cylinder, the cleaning frame, and the elastic sleeve, thereby adjusting the distribution of gas inside the feed bin, thereby accelerating the suction force of the gas near the feed pipe, thereby increasing the vacuum degree in the feed pipe, enhancing the suction capacity of the feed pipe, and avoiding the blockage of the filter element affecting the normal suction of the vacuum feeder. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0027] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0028] Figure 3 It is a schematic diagram of the structure of the body assembly of the present invention;

[0029] Figure 4 It is a schematic diagram of the assembly structure of the machine body component and the blowing component of the present invention;

[0030] Figure 5 For the present invention Figure 4 A magnified image of point A;

[0031] Figure 6 This is an exploded schematic diagram of the filter assembly structure of the present invention;

[0032] Figure 7 It is a partial cross-sectional schematic diagram of the feed bin structure of the present invention;

[0033] Figure 8 For the present invention Figure 7 A magnified view of point B;

[0034] Fig. 9 This is a schematic diagram of the cleaning component structure of the present invention;

[0035] Fig.10 This is a schematic diagram of the assembly structure of the filter assembly and the cleaning assembly of the present invention;

[0036] Fig.11 It is an exploded schematic diagram of the filter element and the elastic sleeve structure of the present invention;

[0037] Fig.12 It is a front cross-sectional schematic diagram of the feed bin structure of the present invention.

[0038] In the figure: 1. Body assembly; 101. Feed bin; 102. Lower hopper; 103. Top cover; 104. Vacuum tube; 105. Feed pipe; 106. Fan off; 107. Air hammer; 2. Filter assembly; 201. Mounting frame; 202. Mounting slot; 203. Mounting seat; 204. Filter element; 205. Guide pipe; 3. Cleaning assembly; 301. Fixing frame; 302. Elastic sleeve; 303. Cleaning frame; 304. Cleaning brush; 305. Cylinder; 4. Blowing assembly; 401. Gas tank; 402. Output pipe; 403. Pulse valve; 404. Air supply pipe; 405. Jet pipe; 406. Bracket. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 12 As shown, a continuous vacuum loader of the present invention comprises a body component 1, a filter component 2 is arranged inside the body component 1, a cleaning component 3 is arranged on the filter component 2, and a blowing component 4 is arranged on one side of the body component 1.

[0041] When in use, during the vacuum feeding of the body component 1, the material is separated from the air by the filter component 2. In order to avoid clogging of the filter component 2 and affecting the normal operation of the vacuum feeding, the filter component 2 is cleaned in time by the cooperation of the cleaning component 3 and the blowing component 4 to ensure the continuous feeding of the body component 1.

[0042] like Figure 3 As shown, the body assembly 1 includes a feed bin 101, a lower hopper 102 is arranged below the feed bin 101, a fan 106 is arranged at one end of the lower hopper 102 away from the feed bin 101, and by setting the fan shutoff fan 106, unloading and air locking are performed in the negative pressure pneumatic conveying system, a discharge port is arranged at one end of the fan shutoff fan 106 away from the lower hopper 102, and a top cover 103 is arranged at one end of the feed bin 101 away from the lower hopper 102.

[0043] A vacuum tube 104 is arranged on the surface of the top cover 103, a vacuum pump is arranged on the end of the vacuum tube 104 away from the top cover 103, a feed pipe 105 is arranged on one side of the feed bin 101, a conveying pipe is arranged on the end of the feed pipe 105 away from the feed bin 101, a vacuum is generated by arranging a vacuum pump, and the negative pressure generated by the vacuum sucks external materials into the feed bin 101 through the conveying pipe and the feed pipe 105, and an air hammer 107 is arranged on the surface of the discharge hopper 102, and the air hammer 107 is arranged to assist in discharge of materials.

[0044] like Figure 6 , Figure 7 As shown, the filter assembly 2 includes a filter core 204, and filter holes are arranged on the surface of the filter core 204. The filter core 204 is provided to separate the material from the air. A guide tube 205 is arranged above the filter core 204 to evenly guide the vacuum airflow.

[0045] The filter assembly 2 also includes a mounting frame 201, the inner wall of the feed bin 101 is connected to the mounting frame 201, a plurality of mounting grooves 202 are provided on the surface of the mounting frame 201, a mounting seat 203 is provided inside the mounting groove 202, a filter element 204 is provided at the center position of the surface of the mounting seat 203, the inner wall of the mounting seat 203 is connected to the outer surface of the filter element 204, and the filter element 204 is installed on the mounting frame 201 by cooperating with the mounting seat 203 and the mounting groove 202.

[0046] like Figure 4 , Figure 5 As shown, the spray assembly 4 includes a gas tank 401, a plurality of output pipes 402 are arranged above the gas tank 401, a pulse valve 403 is arranged at one end of the output pipe 402 away from the gas tank 401, an air supply pipe 404 is arranged at one end of the pulse valve 403 away from the output pipe 402, an injection pipe 405 is arranged below the air supply pipe 404, an injection nozzle is arranged at one end of the injection pipe 405 away from the air supply pipe 404, which is used for spraying and cleaning the filter element 204, and a control valve is arranged on the injection pipe 405.

[0047] A bracket 406 is provided below the gas tank 401 for supporting and fixing the gas tank 401. The bracket 406 is connected to the outer surface of the feed bin 101. A positioning hole is provided at the position where the air supply pipe 404 is connected to the feed bin 101. There are multiple air supply pipes 404, and the multiple air supply pipes 404 are linearly arranged above the filter element 204. There are multiple jet pipes 405, and the multiple jet pipes 405 are arranged at intervals on the air supply pipe 404. The positions of the jet pipes 405 correspond one-to-one to the positions of the filter element 204.

[0048] When in use, turn on the vacuum pump, so that the vacuum pump continuously extracts the air in the body component 1 through the vacuum tube 104, and under the action of the vacuum pump, a vacuum environment is formed inside the body component 1, thereby generating negative pressure, and the material to be transported is sucked into the feed bin 101 through the conveying pipeline and the feed pipe 105, and then the material and the air are separated through the filter element 204, that is, the air in the feed bin 101 is sucked into the vacuum tube 104 through the filter holes on the filter element 204 and the guide tube 205, and then the material automatically falls due to its own gravity, and falls and accumulates in the lower hopper 102, and then it is discharged through the fan 106, so that the material in the lower hopper 102 is discharged from the lower material port through the fan 106, thereby realizing continuous loading and unloading. In order to improve the discharging effect, the lower hopper 102 is vibrated and knocked by the air hammer 107 to realize auxiliary unloading.

[0049] Then, the material on the filter element 204 is cleaned regularly through the spray assembly 4, and the controller controls and opens the pulse valve 403 and the control valve, and the compressed gas inside the gas tank 401 is diverted and transported to multiple jet pipes 405 through the output pipe 402 and the air supply pipe 404, and then the compressed gas in the jet pipe 405 is passed through the guide pipe 205 and sprayed into the inside of the filter element 204 through the jet nozzle, and then the compressed gas is ejected from the filter holes of the filter element 204, and the ejected gas drives the movement of the surrounding gas, thereby clearing the powdery materials inside the filter holes and attached to the surface of the filter element 204, thereby ensuring the normal use of the filter element 204.

[0050] In the above process, a negative pressure pneumatic conveying system is used to realize vacuum loading of the body component 1, so that the material can be quickly sucked into the conveying pipeline to improve work efficiency and realize fixed-point material conveying. In addition, the material is in a vacuum state during the material conveying and discharging processes, which can effectively prevent material contamination and oxidation and ensure the quality and safety of the material.

[0051] During the vacuum feeding process, the material is blocked by the filter element 204, and part of the material will adhere to the filter element 204. Due to the different types of materials, the adhesion of the materials is also different. If the adhesion of the materials is large, the cleaning effect of the filter element 204 will be poor. Since the blockage of the filter element 204 at different positions is different, the existing device cannot detect the blockage degree of the filter element 204 at different positions in real time and clean it in time. At the same time, the blockage of the filter element 204 will reduce the vacuum degree in the feed pipe 105, thereby reducing its suction capacity.

[0052] In order to solve the above problems, the vacuum feeder also includes:

[0053] A gas flow sensor is provided on the flow guide tube 205 , and the gas flow sensor detects the amount of gas passing through the filter element 204 , thereby determining the degree of blockage of the filter element 204 .

[0054] As shown Fig. 9 in FIG. 3, the cleaning assembly 3 includes a fixing frame 301, an elastic sleeve 302 is arranged below the fixing frame 301, a cleaning frame 303 is arranged at one end of the elastic sleeve 302 away from the fixing frame 301, a cleaning brush 304 is arranged at the center position of the surface of the cleaning frame 303, a cylinder 305 is arranged on one side of the fixing frame 301, the number of the cylinders 305 is two, the two cylinders 305 are respectively arranged on both sides of the elastic sleeve 302, the output end of the cylinder 305 is connected with the cleaning frame 303, the cleaning brush 304 is annular, the cleaning brush 304 is adapted to the outer surface of the filter element 204, and a plurality of bristles are arranged on the cleaning brush 304, and the plurality of bristles are annularly arranged on the surface of the cleaning brush 304.

[0055] As shown Figures 10 to 12 in FIG. 4, the mounting frame 201 is connected to the top surface of the fixing frame 301, a through groove is formed at the position where the fixing frame 301 is connected with the filter element 204, and the filter element 204 penetrates through the elastic sleeve 302 and extends to the outside of the cleaning frame 303.

[0056] During use, the cylinder 305 is controlled by a controller to reciprocate, and the cylinder 305 drives the cleaning frame 303 and the cleaning brush 304 to reciprocate together, so that the cleaning brush 304 cleans the materials with large adhesion on the filter element 204, improving the cleaning effect. During this process, the elastic sleeve 302 deforms, and the elastic sleeve 302 elongates or contracts under the action of the cleaning frame 303.

[0057] During vacuum feeding, under the action of a vacuum pump, the gas inside the body assembly 1 is filtered through the filter holes on the surface of the filter element 204 and then sucked into the inside of the filter element 204. Then, the gas inside the filter element 204 is discharged from the diversion pipe 205 and sucked into the inside of the vacuum pipe 104. During this process, the gas flow sensor monitors the gas flow discharged from the diversion pipe 205 in real time, denoted as B. Since the gas flow sensor detects the gas flow discharged from the diversion pipe 205 in the initial state of the filter element 204, denoted as A, therefore, by detecting the gas flow discharged from the diversion pipe 205 and calculating the difference between A and B, the clogging condition of the filter element 204 can be judged. Specifically:

[0058] When B < A and the difference between B and A is within the standard range, it indicates that there is powder material deposition on the surface of the filter element 204 at this time, but it does not affect the normal operation of the filter element 204, and the filter element 204 is still in a better working state at this time.

[0059] When B < A and the difference between B and A exceeds the standard range, it indicates that there is excessive deposition of powdery material on the surface of the filter element 204, and the powdery material has affected the air permeability of the filter holes on the surface of the filter element 204. Based on this, the controller controls the blowing assembly 4 to blow and clean the powdery material on the filter element 204. That is, the controller controls and opens the pulse valve 403 and the control valve, and the compressed gas inside the gas tank 401 is shunted and transported through the output pipe 402 and the air supply pipe 404 to the blowpipe 405, and then the compressed gas in the blowpipe 405 is blown through the diversion pipe 205 and into the interior of the filter element 204 through the jet nozzle, and then the compressed gas sprays out from the filter holes of the filter element 204, and the sprayed gas drives the surrounding gas to move, thereby removing the powdery material attached inside and on the surface area of the filter holes on the filter element 204 and making it fall into the blanking hopper 102.

[0060] When the value of B increases and the difference between B and A returns to the standard range, it indicates that the method of using the blowing assembly 4 to clean the filter element 204 is effective, that is, the filter element 204 is restored to a better working state to ensure the normal operation of the vacuum feeding work.

[0061] When the value of B increases somewhat and the difference between B and A does not return to the standard range, at this time, it indicates that the adhesion of the dust material on the filter element 204 is relatively large. Only the blowing and cleaning by the blowing assembly 4 can blow off the dust material with relatively small adhesion on the filter element 204, so that the purpose of effectively cleaning the filter element 204 cannot be achieved. At this time, the controller controls the cylinder 305 to make the cylinder 305 push the cleaning frame 303 and the cleaning brush 304 to move away from the fixed frame 301 together, and the elastic sleeve 302 deforms under the action of the cleaning frame 303, and the end of the elastic sleeve 302 close to the cleaning frame 303 is stretched, so that the cleaning brush 304 cleans the material with relatively large adhesion on the filter element 204. At the same time, the controller opens the pulse valve 403 and the control valve, and the compressed gas inside the gas tank 401 is shunted and transported through the output pipe 402 and the air supply pipe 404 to the blowpipe 405, and then the compressed gas in the blowpipe 405 is blown through the diversion pipe 205 and into the interior of the filter element 204 through the jet nozzle, and then the compressed gas sprays out from the filter holes of the filter element 204, so that the blowpipe 405 and the cleaning brush 304 cooperate to perform double cleaning of blowing and sweeping on the filter element 204, improving the filtering efficiency of the filter element 204.

[0062] When the jet pipe 405 is blowing, during the process of compressed gas being ejected from the filter hole of the filter element 204, the ejected gas drives the movement of the surrounding gas, so that the powdery materials blown off the filter element 204 are dispersed again, and the powdery materials are easily adhered to the filter element 204 again under the action of the surrounding gas, thereby causing secondary pollution to the filter element 204. In the above process, the cleaning frame 303 and the cleaning brush 304 are pushed by the cylinder 305 to move in the direction away from the fixed frame 301, and the elastic sleeve 302 is deformed under the action of the cleaning frame 303, and the end of the elastic sleeve 302 close to the cleaning frame 303 is stretched, so that the cleaning frame 303 and the elastic sleeve 302 cooperate to prevent the surrounding powdery materials from adhering again to the position where the cleaning brush 304 cleans the filter element 204, and at the same time, a plurality of cleaning frames 303 are combined and spliced ​​to form a blocking wall to prevent the surrounding powdery materials from moving upward under the action of the gas, so that the powdery materials can fall into the lower hopper 102 under the action of gravity.

[0063] After the above-mentioned cleaning component 3 and the blowing component 4 cooperate in operation, the flow change of the gas flow sensor is observed, so that the next cleaning request is judged by the flow detected by the gas flow sensor, that is, when the B value increases and the difference between B and A returns to the standard range, it indicates that the double cleaning method of blowing and sweeping can effectively achieve cleaning processing and improve the filtering and purification capacity of the filter element 204.

[0064] It is worth noting that when the value of B increases but changes slowly, it indicates that the filter element 204 is blocked to a greater extent, and the blockage of the filter element 204 will reduce the vacuum degree in the feed pipe 105, thereby reducing its suction capacity. At this time, the controller cylinder 305 is used to change the elongation of the elastic sleeve 302 on the filter element 204, thereby adjusting the distribution of the gas inside the feed bin 101, specifically:

[0065] The cylinder 305 is controlled by a controller so that the cylinder 305 pushes the cleaning frame 303 and the cleaning brush 304 to move together in a direction away from the fixed frame 301, and the elastic sleeve 302 is deformed under the action of the cleaning frame 303, and the end of the elastic sleeve 302 close to the cleaning frame 303 is stretched. By controlling the elongation length of the cylinder 305, the elongation amount of the elastic sleeve 302 on the filter element 204 is controlled, thereby changing the gas flow rate of the gas entering the filter element 204, that is, increasing the elongation length of the cylinder 305, the elongation amount of the elastic sleeve 302 on the filter element 204 also increases, and the gas flow rate entering the filter element 204 decreases.

[0066] Based on this, the elongation of the elastic sleeve 302 on the filter element 204 on the side away from the feed pipe 105 is greater than the elongation of the elastic sleeve 302 on the filter element 204 on the side close to the feed pipe 105. At the same time, the height of the cleaning frame 303 on the side away from the feed pipe 105 is less than the height of the cleaning frame 303 close to the feed pipe 105, that is, a barrier is formed under the action of the combination of multiple cleaning frames 303, so that the gas in the feed bin 101 is gathered on the side close to the feed pipe 105, that is, the internal gas flow of the filter element 204 on the side away from the feed pipe 105 is reduced, and the internal gas flow of the filter element 204 on the side close to the feed pipe 105 is increased, thereby accelerating the suction force of the gas close to the feed pipe 105, thereby improving the vacuum degree in the feed pipe 105, enhancing the material suction capacity of the feed pipe 105, and avoiding the blockage of the filter element 204 affecting the normal material suction of the vacuum loader.

[0067] To summarize, the blockage condition of the filter element 204 can be determined by detecting the gas flow rate discharged from the guide tube 205 and calculating the difference between A and B. The filter element 204 can then be cleaned according to different conditions through the cleaning component 3 and the spray component 4, thereby improving the ability of the filter element 204 to cope with blockages during use, and effectively solving the problem of removing the filter element 204 for cleaning or replacing due to blockage, thereby improving the working efficiency of the vacuum loader.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous vacuum feeder, comprising a machine body assembly (1), wherein the machine body assembly (1) comprises a feed bin (101), a feed pipe (105) is provided on one side of the feed bin (101), and the characteristics are: Inside the body component (1), a filtering component (2) is provided. A cleaning component (3) is arranged on the filtering component (2). On one side of the body component (1), a blowing component (4) is provided. The blowing component (4) includes a blowing air pipe (405). The filtering component (2) includes a filter core (204). A plurality of filtering holes are arranged on the surface of the filter core (204). Above the filter core (204), a diversion pipe (205) is provided. A gas flow sensor is arranged on the diversion pipe (205). The cleaning component (3) includes a fixing frame (301). Below the fixing frame (301), an elastic sleeve (302) is provided. At one end of the elastic sleeve (302) away from the fixing frame (301), a cleaning frame (303) is provided. At the central position on the surface of the cleaning frame (303), a cleaning brush (304) is provided. On one side of the fixing frame (301), a cylinder (305) is provided. There are two cylinders (305). The two cylinders (305) are respectively arranged on both sides of the elastic sleeve (302). The output end of the cylinder (305) is connected to the cleaning frame (303). During vacuum feeding, the gas flow sensor monitors in real time the gas flow discharged from the diversion pipe (205), denoted as B. When the filter core (204) is in the initial state, the gas flow sensor detects the gas flow discharged from the diversion pipe (205), denoted as A. When B < A and the difference between B and A exceeds the standard range, the controller controls the blowing component (4) to blow and clean the powdery material on the filter core (204). When the value of B increases and the difference between B and A does not return to the standard range, the blowing air pipe (405) and the cleaning brush (304) cooperate to perform double cleaning of blowing and sweeping on the filter core (204). During this process, one end of the elastic sleeve (302) close to the cleaning frame (303) is stretched, so that the cleaning frame (303) and the elastic sleeve (302) cooperate to prevent the surrounding powdery material from adhering to the position on the filter core (204) that has been cleaned by the cleaning brush (304) again. At the same time, multiple cleaning frames (303) are combined and spliced to form a blocking wall to block the upward movement of the surrounding powdery material under the action of the gas. When the value of B increases but the numerical change is slow, the controller controls the cylinder (305) to change the elongation of the elastic sleeve (302) on the filter core (204), thereby adjusting the distribution of the gas inside the feed bin (101). By controlling the elongation length of the cylinder (305), the elongation of the elastic sleeve (302) on the filter core (204) is further controlled, and then the gas flow rate of the gas entering the inside of the filter core (204) is changed, so that the elongation of the elastic sleeve (302) on the filter core (204) on the side away from the feed pipe (105) is greater than the elongation of the elastic sleeve (302) on the filter core (204) on the side close to the feed pipe (105). At the same time, the height of the cleaning frame (303) on the side away from the feed pipe (105) is less than the height of the cleaning frame (303) on the side close to the feed pipe (105).

2. The continuous vacuum feeder according to claim 1, characterized in that: The cleaning brush (304) is annular in shape, and is adapted to fit the outer surface of the filter element (204); The cleaning brush (304) is provided with a plurality of bristles, and the plurality of bristles are arranged in a ring shape on the surface of the cleaning brush (304).

3. The continuous vacuum feeder according to claim 1, characterized in that: A through slot is provided at the position where the fixing frame (301) is connected to the filter core (204), and the filter core (204) passes through the elastic sleeve (302) and extends to the outside of the cleaning frame (303).

4. The continuous vacuum feeder according to claim 1, characterized in that: The filter assembly (2) further comprises a mounting frame (201), the mounting frame (201) being connected to the top surface of the fixing frame (301), a plurality of mounting grooves (202) being provided on the surface of the mounting frame (201), a mounting seat (203) being provided inside the mounting groove (202), the filter element (204) being provided at the center position of the surface of the mounting seat (203), and the inner wall of the mounting seat (203) being connected to the outer surface of the filter element (204).

5. The continuous vacuum feeder according to claim 1, characterized in that: The inner wall of the feed bin (101) is connected to the mounting frame (201); a lower hopper (102) is arranged below the feed bin (101); a fan (106) is arranged at one end of the lower hopper (102) away from the feed bin (101); a discharge port is arranged at one end of the fan (106) away from the lower hopper (102); and a top cover (103) is arranged at one end of the feed bin (101) away from the lower hopper (102).

6. The continuous vacuum feeder according to claim 5, characterized in that: A vacuum tube (104) is provided on the surface of the top cover (103), and a vacuum pump is provided at one end of the vacuum tube (104) away from the top cover (103); A conveying pipeline is provided at one end of the feed pipe (105) away from the feed bin (101), and an air hammer (107) is provided on the surface of the lower hopper (102).

7. The continuous vacuum feeder according to claim 1, characterized in that: The spray assembly (4) comprises a gas tank (401), a plurality of output pipes (402) are arranged above the gas tank (401), a pulse valve (403) is arranged at one end of the output pipe (402) away from the gas tank (401), an air supply pipe (404) is arranged at one end of the pulse valve (403) away from the output pipe (402), an air injection pipe (405) is arranged below the air supply pipe (404), an air injection nozzle is arranged at one end of the air injection pipe (405) away from the air supply pipe (404), and a control valve is arranged on the air injection pipe (405).

8. The continuous vacuum feeder according to claim 7, characterized in that: There are a plurality of air supply pipes (404), and the plurality of air supply pipes (404) are linearly arranged above the filter core (204); there are a plurality of air injection pipes (405), and the plurality of air injection pipes (405) are arranged at intervals on the air supply pipes (404); the positions of the air injection pipes (405) correspond one-to-one to the positions of the filter core (204).

9. The continuous vacuum feeder according to claim 7, characterized in that: A bracket (406) is provided below the gas tank (401), and the bracket (406) is connected to the outer surface of the feed bin (101). A positioning hole is provided at the position where the air supply pipe (404) is connected to the feed bin (101).

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