An efficient replacement device and replacement method for a white mud pre-coated layer

Abstract

The present invention belongs to the technical field of filters, and relates to a high-efficiency replacement device and replacement method for a white mud pre-coated layer. The purpose of the present invention is to provide a high-efficiency replacement device and replacement method for a white mud pre-coated layer, which can make the thickness of the pre-coated layer more uniform and facilitate the replacement of the pre-coated layer. The present invention provides such a high-efficiency replacement device and replacement method for a white mud pre-coated layer, which includes a frame, a processing box body, a vacuum pump and a hollow rotating cylinder. The processing box body is installed on the top of the frame, the vacuum pumps are installed on both sides of the frame, and the hollow rotating cylinder is rotatably connected to the middle of the frame. When the present invention is in operation, the air inlet can be blocked by the plug on the air inlet disc, so that there is no suction inside the ceramic filter disc when it rotates to the scraper, avoiding the ceramic filter disc that has been scraped off from continuing to adsorb the scraped white mud, resulting in uneven thickness of the pre-coated layer and affecting the use.

Description

Technical Field

[0001] The present invention belongs to the technical field of filters, and relates to a device and a method for efficiently replacing a white mud precoating layer. Background Art

[0002] With the continuous development of filtration technology, a precoated filter has emerged. Compared with the original filter, the precoating technology is adopted. The precoating technology changes the filtering medium from a single filter screen to a filter screen and a white mud precoating layer. Since the precoating layer is composed of white mud particles with a particle size of about 40 - 50 μm, many small pores are formed. These pores and the filter screen together complete the work of the filtering medium. Under a relatively high vacuum, a better filtering effect can be obtained, and it can be mainly used for white mud filtration to extract the lye in the white mud.

[0003] However, when the precoating layer in the prior art is in use, it needs to pass through a two-way scraper. First, a layer of precoating layer is left, and then the white mud outside the precoating layer is scraped off. Subsequently, the white mud is filtered through the cooperation of the precoating layer and the filtering medium. However, when leaving the precoating layer in the existing method, the scraper needs to scrape the area of the filtering medium with white mud attached. At this time, the inside of the filtering medium is still in a vacuum state and will continuously adsorb white mud, causing the white mud to adhere to the filtering medium. This easily affects the effect of the scraper scraping the white mud, and thus affects the thickness of the left precoating layer, making the thickness of the precoating layer uneven.

[0004] Moreover, after the precoating layer is used for a long time, the precoating layer needs to be cleaned and then precoated again. In the existing method during the cleaning process, only scraping and spray rinsing can be used to clean the precoating layer. However, some white mud in the precoating layer will get stuck in the holes of the filtering medium. At this time, it is difficult to achieve the effect of cleaning the white mud in this part of the precoating layer only by scraping and water spraying. It is necessary to remove the filtering medium for cleaning, the operation is relatively cumbersome, and the cleaning efficiency is low. Summary of the Invention

[0005] In view of this, the present invention provides a device and a method for efficiently replacing a white mud precoating layer, which can make the thickness of the precoating layer more uniform and facilitate the replacement of the precoating layer.

[0006] The technical implementation solution of the present invention is as follows: A high-efficiency replacement device for a white mud precoating layer includes a frame, a processing box body, a vacuum pump, and a hollow rotating cylinder. The processing box body is installed at the top of the frame, vacuum pumps are installed on both sides of the frame, and the hollow rotating cylinder is rotatably connected to the middle of the frame. It also includes a reduction motor, a reduction transmission group, an adsorption and filtration component, a blowing component, and a flushing component. The reduction motor is installed at the top of the frame, and a reduction transmission group is provided between the output shaft of the reduction motor and the hollow rotating cylinder so that the reduction motor can drive the hollow rotating cylinder to rotate. A plurality of discharge ports are evenly spaced on the processing box body for discharging white mud. An adsorption and filtration component is provided on the hollow rotating cylinder for adsorbing white mud and filtering the alkali liquor in the white mud. A plurality of groups of ceramic scrapers are slidably connected to the top of the processing box body at even intervals. Each group of ceramic scrapers has two and is arranged on both sides. A blowing component and a flushing component are installed on the frame, and the flushing component is used for flushing the precoating layer.

[0007] As an improvement of the above solution, the adsorption and filtration component includes an air inlet disc, a vacuum pipe, a gas distribution cylinder, a guide pipe, and a ceramic filter disc. Air inlet discs are rotatably connected to both the left and right ends of the hollow rotating cylinder. The air extraction end of the vacuum pump is connected to the vacuum pipe, and the vacuum pipe communicates with the air inlet disc. Gas distribution cylinders are connected to the inside of both sides of the hollow rotating cylinder. A plurality of guide pipes are evenly spaced and communicated between the gas distribution cylinders of the two air inlet discs. The number of guide pipes is the same as the number of through holes. A plurality of groups of ceramic filter discs are evenly spaced and connected to the hollow rotating cylinder. The number of each group of ceramic filter discs is the same as the number of guide pipes and is annularly connected to the hollow rotating cylinder. The scraping part of each group of ceramic scrapers faces the ceramic filter disc, and multiple guide pipes communicate with multiple ceramic filter discs in the same group respectively. When the vacuum pump operates, it can make the ceramic filter disc generate suction to adsorb the white mud at the frame and extract the alkali liquor in the white mud.

[0008] As an improvement of the above solution, a blocking block is arranged in the air inlet disc, and the blocking block is used to block the position where the air inlet disc communicates with the gas distribution cylinder.

[0009] As an improvement of the above solution, the blowing component includes an air pump and a blowing pipe. The air pump is installed on the frame, and the air outlet end of the air pump is connected to the blowing pipe. Ventilation holes are opened on both the air inlet disc and the blocking block, and the blowing pipe communicates with the ventilation holes so that when the ventilation holes are aligned with the blocking block, gas can be injected into the through holes through the ventilation holes.

[0010] As an improvement of the above solution, the flushing component includes an intelligent water tank, a water outlet pipe, and a spray pipe. The intelligent water tank is installed on the frame, the intelligent water tank is communicated with the water outlet pipe, and a plurality of groups of spray pipes are evenly spaced and connected to the water outlet pipe. Each group of spray pipes has two and the positions of the nozzles face the ceramic filter disc close to them.

[0011] As an improvement of the above scheme, it also includes a fixed bracket, an upper rack, a transmission gear, a lower rack and a toggle assembly. A fixed bracket is installed on the top of the frame, and an upper rack and a lower rack are slidingly connected on the upper and lower sides of the fixed bracket respectively. The upper rack is connected to the ceramic scraper on one side of each group, and the lower rack is connected to the ceramic scraper on the other side of each group. The fixed bracket is rotatably connected with transmission gears at even intervals, and the two sides of the transmission gear are respectively meshed with the upper rack and the lower rack. A toggle assembly is provided between the ceramic scraper and the frame, and the toggle assembly is used to drive the ceramic scraper to move.

[0012] As an improvement of the above-mentioned scheme, the toggle assembly includes a toggle gear rod, a slider, a connecting rod and a bevel gear. Each group of ceramic filter discs has a ceramic filter disc connected to a toggle gear rod. The positions of each ceramic filter disc connected to the toggle gear rod are aligned with each other. The processing frame is evenly connected to bevel gears with the same number of ceramic scraper groups. The rotation of the toggle gear rod can drive the toggle gear to rotate. Each group of ceramic scrapers has a ceramic scraper connected to a slider. The slider is slidably connected to the frame, and a connecting rod is hingedly connected to the eccentric position of the slider and the bevel gear.

[0013] As an improvement of the above scheme, a contact switch is also included. The processing frame is equipped with a contact switch, one of the ceramic scrapers moves to contact the contact switch, and the contact switch is electrically connected to the air pump and the smart water tank respectively.

[0014] As an improvement of the above solution, a collecting frame is also included. The collecting frame is connected to the frame, and the discharge end of the discharge port is aligned with the collecting frame.

[0015] The present invention also provides a method for efficiently replacing the white mud pre-coating layer using the device, and the specific steps of replacing the pre-coating layer are as follows:

[0016] S1: Make the ceramic scrapers on both sides close to the ceramic filter disc, and rotate the ceramic filter disc through the operation of the reduction motor, so that the ceramic scrapers can scrape off the pre-coated layer on the ceramic filter disc;

[0017] S2: Start the air pump, and the air is blown out from the ceramic filter plate to blow out the pre-coated white mud layer attached to the ceramic filter plate;

[0018] S3: Start the operation of the smart water tank, which will spray water onto the ceramic filter disc through the water outlet pipe and the nozzle to wash the white mud pre-coating layer on the ceramic filter disc;

[0019] S4: The ceramic filter disc continues to rotate to absorb the white mud, forming a new white mud pre-coating layer on the ceramic filter disc.

[0020] The beneficial effects of the present invention are as follows: 1. When the present invention is in operation, the air intake can be blocked by the block on the air intake plate, so that no suction is generated inside the ceramic filter plate when it rotates to the scraper, thereby preventing the scraped ceramic filter plate from continuing to absorb the scraped white mud, resulting in uneven pre-coating thickness and affecting use.

[0021] 2. When the pre-coating on the ceramic scraper needs to be processed, the present invention can scrape it off with the scraper and drive the intelligent water tank and the air pump to operate at the same time. The operation of the intelligent water tank can rinse the ceramic filter plate, and the operation of the air pump can make the ceramic filter plate spray air from the inside to the outside, thereby blowing out the white mud attached to the ceramic filter plate, so as to remove the pre-coating. There is no need to remove the ceramic filter plate to remove the pre-coating, which makes it more convenient and efficient to replace the pre-coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the rack and the processing frame of the present invention.

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the ceramic filter plate, air guide tube, ceramic scraper and other components of the present invention.

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the hollow drum, air intake plate, air guide pipe and other components of the present invention.

[0026] Figure 5 This is an exploded view of the structure of the hollow drum and the air inlet disk of the present invention, wherein the hollow drum is a cross-sectional view.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the air intake disk of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the blowing assembly of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the flushing component of the present invention.

[0030] Figure 9 It is a partial three-dimensional structural schematic diagram of the flushing component of the present invention.

[0031] Figure 10 It is a three-dimensional structural schematic diagram of the processing frame, ceramic scraper and nozzle of the present invention.

[0032] Figure 11 It is a three-dimensional structural schematic diagram of the fixing bracket, the shifting gear rod, the ceramic filter plate and other components of the present invention.

[0033] Figure 12 It is a three-dimensional structural schematic diagram of the upper rack, transmission gear, lower rack, toggle assembly and other parts of the present invention.

[0034] Figure 13 It is a mechanism exploded view of the toggle assembly of the present invention.

[0035] Figure 14 It is a three-dimensional structural schematic diagram of the bevel gear, processing frame, ceramic scraper and other components of the present invention.

[0036] Figure 15 It is a three-dimensional structural schematic diagram of the contact switch, processing frame, ceramic scraper and other components of the present invention.

[0037] In the accompanying drawings: 1-frame, 12-processing frame, 2-vacuum pump, 21-vacuum air pipe, 3-reduction motor, 4-reduction transmission group, 51-hollow drum, 511-air inlet plate, 512-air distributor, 52-ceramic filter plate, 53-air guide pipe, 6-ceramic scraper, 71-fixed bracket, 711-upper rack, 712-transmission gear, 713-lower rack, 72-sliding gear rod, 721-slider, 722-connecting rod, 723-bevel gear, 81-air pump, 82-air blowing pipe, 91-intelligent water tank, 92-water outlet pipe, 93-nozzle, 10-contact switch, 11-collection frame. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings. Example

[0039] A white mud pre-coating high-efficiency replacement device and replacement method, such as Figures 1 - 10 As shown, it includes a frame 1, a processing frame 12, a vacuum pump 2, a reduction motor 3, a hollow drum 51, a reduction transmission group 4, an adsorption and filtration component, a blowing component and a flushing component. The processing frame 12 is installed on the front side of the top of the frame 1, and the vacuum pump 2 is installed on the left and right sides of the frame 1. The reduction motor 3 is installed on the left rear side of the top of the frame 1. The middle part of the frame 1 is rotatably connected with the hollow drum 51, and a reduction transmission group 4 is arranged between the output shaft of the reduction motor 3 and the hollow drum 51 so that the reduction motor 3 can drive the hollow drum 51 to rotate. A plurality of discharge ports are evenly spaced on the processing frame 12 for discharging white mud. The hollow drum 51 is provided with an adsorption and filtration component for adsorbing white mud and filtering the alkali solution in the white mud. A plurality of groups of ceramic scrapers 6 are evenly spaced and slidably connected to the top of the processing frame 12, and each group of ceramic scrapers 6 is provided with two and are arranged on the left and right. A blowing component and a flushing component are installed on the frame 1, and the flushing component is used to flush the pre-hanging layer.

[0040] like Figures 3 - 6As shown in the figure, the adsorption and filtration assembly includes an air inlet disc 511, a vacuum pipe 21, an air distribution cylinder 512, a guide air pipe 53, and a ceramic filter disc 52. Both the left and right ends of the hollow rotating cylinder 51 are rotatably connected to the air inlet disc 511. The air extraction end of the vacuum pump 2 is connected to the vacuum pipe 21, and the vacuum pipe 21 communicates with the air inlet disc 511. The air distribution cylinders 512 are connected to the inner parts on both the left and right sides of the hollow rotating cylinder 51. A plurality of through holes are evenly spaced on the air distribution cylinder 512 for forming a plurality of air channels on the air distribution cylinder 512. The air inlet disc 511 communicates with the air channels on the air distribution cylinder 512. A plurality of guide air pipes 53 are evenly spaced and communicated between the air distribution cylinders 512 of the two air inlet discs 511 on both sides. The number of the guide air pipes 53 is the same as the number of the through holes. A plurality of groups of ceramic filter discs 52 are evenly spaced and connected to the hollow rotating cylinder 51. The number of each group of ceramic filter discs 52 is the same as the number of the guide air pipes 53 and is annularly connected to the hollow rotating cylinder 51. The ceramic filter discs 52 communicate with the guide air pipes 53. Arc-shaped grooves are evenly spaced on the processing frame 12, and the arc-shaped grooves are located between two adjacent discharge ports. Each group of ceramic filter discs 52 can rotate on the arc-shaped grooves respectively. The scraping parts of each group of ceramic scrapers 6 all face the ceramic filter discs 52. The plurality of guide air pipes 53 communicate with a plurality of ceramic filter discs 52 in the same group respectively, so that the operation of the vacuum pump 2 can make the ceramic filter discs 52 generate suction force to adsorb the white mud at the rack 1 and extract the alkali solution in the white mud.

[0041] As Figure 6 shown, a blocking block is arranged on the front side inside the air inlet disc 511. The blocking block is used to block the position where the air inlet disc 511 communicates with the air distribution cylinder 512, so that when the position with the through hole on the air distribution cylinder 512 rotates to align with the blocking block, the suction force generated from the air inlet disc 511 will not be introduced into the through hole aligned with the blocking block.

[0042] As Figure 7 shown, the blowing assembly includes an air pump 81 and a blowing air pipe 82. The air pump 81 is installed on the right side of the rack 1. The air outlet end of the air pump 81 is connected to the blowing air pipe 82. Vent holes are provided on both the air inlet disc 511 and the blocking block, and the positions of the two vent holes are the same. The blowing air pipe 82 communicates with the vent holes, so that when the vent holes are aligned with the blocking block, gas can be injected into the through holes through the vent holes.

[0043] As Figures 8 - 10 shown, the flushing assembly includes an intelligent water tank 91, a water outlet pipe 92, and a spray pipe 93. The intelligent water tank 91 is installed on the front right side of the rack 1. The water outlet pipe 92 communicates with the intelligent water tank 91. The water outlet pipe 92 is connected to the processing frame 12. A plurality of groups of spray pipes 93 are evenly spaced and connected to the water outlet pipe 92. The spray pipes 93 are embedded in the processing frame 12. Each group of spray pipes 93 has two, and the positions of the nozzles face the ceramic filter discs 52 close to them.

[0044] When it is necessary to extract the lye doped in the white mud, this device can be used. When in use, pour the white mud into the middle of the frame 1, and then start the reduction motor 3 to drive the hollow rotating cylinder 51 to rotate through the reduction drive group 4. At the same time, start the vacuum pump 2. The operation of the vacuum pump 2 can extract the gas inside each ceramic filter disc 52 through the vacuum pipe 21, the air inlet disc 511, and the air guide pipe 53, so that the inside of the ceramic filter disc 52 is in a vacuum negative pressure state. At this time, for the ceramic filter disc 52 located at the position where the white mud is contained inside the frame 1, the white mud is difficult to pass through the ceramic filter disc 52 and thus adheres to the surface of the ceramic filter disc 52. The lye in the white mud can pass through the ceramic filter disc 52, then enter the ceramic filter disc 52, and be discharged through the air guide pipe 53, the vacuum pipe 21, the air inlet disc 511, and the air distribution cylinder 512. Before that, the operator can place the collection container at the discharge end of the vacuum pump 2 for collection. The rotation of the hollow rotating cylinder 51 can drive the ceramic filter disc 52 to rotate. When the ceramic filter disc 52 rotates close to the ceramic scraper 6, since the through hole corresponding to this ceramic filter disc 52 in the air distribution cylinder 512 is blocked by the block, the inside of the ceramic filter disc 52 close to the ceramic scraper 6 is not in a vacuum negative pressure state, so there is no suction force generated, and at the same time, no white mud is adsorbed. Before that, the ceramic scraper 6 can be toggled to move so that there is a certain gap between the ceramic scraper 6 and the ceramic filter disc 52, so that when the ceramic filter disc 52 rotates, the white mud outside can be scraped off by the ceramic scraper 6. At the same time, there is still some white mud adhering to the ceramic filter disc 52, and this part of the white mud can be used as a pre-coated layer. And the inside of the ceramic filter disc 52 in the scraping state does not generate a suction force, so it can be avoided that after the white mud is scraped off, the ceramic filter disc 52 adsorbs the scraped white mud, affecting the thickness of the pre-coated layer. When the white mud leaves a pre-coated layer on the ceramic filter disc 52 and then the white mud is filtered, the white mud and the ceramic filter disc 52 can be used to filter the white mud at the same time to extract the lye in the white mud. If it is necessary to remove the white mud pre-coated layer on the ceramic filter disc 52, the two-sided ceramic scrapers 6 can be pulled to be close to the ceramic filter disc 52. At this time, the ceramic filter disc 52 continues to rotate, and the ceramic scraper 6 can scrape off the white mud adhering to the ceramic filter disc 52. At the same time, start the air pump 81, and through the air blowing pipe 82, the ventilation holes on the block, and the air guide pipe 53, blow air outwards from inside the ceramic filter disc 52 to blow out the white mud stuck in the pores of the ceramic filter disc 52. At the same time, start the intelligent water tank 91 to cooperate, and spray water through the water outlet pipe 92 and the spray pipe 93 to wash the white mud on the ceramic filter disc 52, so as to completely remove the white mud on the ceramic filter disc 52, facilitating the replacement of the pre-coated layer and making the replacement of the pre-coated layer more efficient.

[0045] Such as Figures 8 - 14As shown, it also includes a fixed bracket 71, an upper rack 711, a transmission gear 712, a lower rack 713 and a toggle assembly. The fixed bracket 71 is installed on the top front side of the frame 1. The upper side of the fixed bracket 71 is slidably connected to the upper rack 711, and the upper rack 711 is connected to the ceramic scraper 6 on the rear side of each group. The lower side of the fixed bracket 71 is slidably connected to the lower rack 713, and the lower rack 713 is connected to the ceramic scraper 6 on the front side of each group. The fixed bracket 71 is rotatably connected with transmission gears 712 at uniform intervals, and the two sides of the transmission gear 712 are respectively meshed with the upper rack 711 and the lower rack 713. A toggle assembly is provided between the ceramic scraper 6 and the frame 1, and the toggle assembly is used to drive the ceramic scraper 6 to move.

[0046] like Figures 12 - 14 As shown, the toggle assembly includes a toggle gear rod 72, a slider 721, a connecting rod 722 and a bevel gear 723. Each group of ceramic filter discs 52 has a ceramic filter disc 52 on the right side of which is connected to a toggle gear rod 72. The positions of each ceramic filter disc 52 connected to the toggle gear rod 72 are aligned with each other. The lower rear part of the processing frame 12 is evenly spaced with bevel gears 723 that are the same number as the number of ceramic scraper plates 6. The toggle gear rod 72 can rotate to engage with the bevel gear 723. The bevel gear 723 is connected to the frame 1 through a one-way clutch. The rear side of each group of ceramic scrapers 6 on the right side is connected to a slider 721. The slider 721 is slidably connected to the frame 1. A connecting rod 722 is hingedly connected between the slider 721 and the eccentric position of the bevel gear 723.

[0047] When the ceramic filter plate 52 rotates, it can drive the toggle gear rod 72 to rotate together. When the toggle gear rod 72 rotates, it can contact the bevel gear 723 and drive the bevel gear 723 to rotate. The rotation of the bevel gear 723 can drive the slider 721 to move left and right through the connecting rod 722. The rightward movement of the slider 721 can drive the right ceramic scraper 6 connected thereto to move right, that is, the right ceramic scraper 6 of each group moves right, and when the right ceramic scraper 6 moves to the right, it can drive the left ceramic scraper 6 to move left through the lower rack 713, the transmission gear 712 and the upper rack 711. Move, that is, drive the ceramic scraper 6 on the left side of each group to move left, thereby driving the two ceramic scrapers 6 in the same group away from each other, so as to leave a pre-hanging layer on the ceramic filter plate 52, and no manual operation is required, which is more convenient during operation. After the slider 721 moves to the right to the limit, the bevel gear 723 continues to rotate and drives the slider 721 to move left through the connecting rod 722, thereby driving the ceramic scrapers 6 on both sides to move closer to each other until they are against the ceramic filter plate 52, so as to scrape off the pre-hanging layer. In this way, there is no need to manually move the ceramic scraper 6, which is more convenient during operation.

[0048] like Figure 15As shown in the figure, it further includes a contact switch 10. The contact switch 10 is installed at the right front part of the processing frame 12. The ceramic squeegee 6 on the rightmost side can move into contact with the contact switch 10. The contact switch 10 is electrically connected to the air pump 81 and the intelligent water tank 91 respectively. After the ceramic squeegee 6 on the rightmost side reciprocates left and right once, it can come into contact with the contact switch 10, starting the air pump 81 and the intelligent water tank 91. At this time, the ceramic squeegee 6 is also in the state closest to the ceramic filter disc 52, and can clean the pre-coated layer on the ceramic filter disc 52, facilitating the replacement of the pre-coated layer and making the replacement more efficient.

[0049] As Figure 1 shown in the figure, it further includes a collection box 11. The collection box 11 is connected to the lower part of the front side of the frame 1. The discharge end of the discharge port is aligned with the collection box 11, so that the white mud scraped off by the ceramic squeegee 6 can fall into the collection box 11, and the white mud is collected through the collection box 11.

[0050] The method for efficiently replacing the white mud pre-coated layer using the above device is as follows:

[0051] S1: Make the ceramic squeegees 6 on both sides close to the ceramic filter disc 52, and rotate the ceramic filter disc 52 by operating the reduction motor 3, so that the ceramic squeegees 6 scrape off the pre-coated layer on the ceramic filter disc 52;

[0052] S2: Start the air pump 81, and blow air from the inside to the outside of the ceramic filter disc 52 through the operation of the air pump 81 to blow out the white mud pre-coated layer attached to the ceramic filter disc 52;

[0053] S3: Start the operation of the intelligent water tank 91. The intelligent water tank 91 will spray water on the ceramic filter disc 52 through the water outlet pipe 92 and the spray pipe 93 to wash the white mud pre-coated layer on the ceramic filter disc 52;

[0054] S4: The ceramic filter disc 52 continues to rotate to adsorb white mud, and a new white mud pre-coated layer is formed on the ceramic filter disc 52.

[0055] Although the present invention has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art through the present disclosure that various changes or modifications can be made to the present invention without departing from the principle and spirit scope of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, rather than to limit the present invention, and the scope of protection is defined by the content of the claims.

Claims

1. An efficient replacement device for a white mud pre-hanging layer, comprising a frame (1), a processing box body (12), a vacuum pump (2) and a hollow rotating cylinder (51). The processing box body (12) is installed at the top of the frame (1), the vacuum pumps (2) are installed on both sides of the frame (1), and the hollow rotating cylinder (51) is rotatably connected to the middle of the frame (1). It is characterized in that: It further includes a reduction motor (3), a reduction transmission group (4), an adsorption and filtration assembly, a blowing assembly, and a flushing assembly. A reduction motor (3) is installed on the top of the frame (1). A reduction transmission group (4) is provided between the output shaft of the reduction motor (3) and the hollow rotating cylinder (51) so that the reduction motor (3) can drive the hollow rotating cylinder (51) to rotate. A plurality of discharge ports are evenly spaced on the processing frame body (12) for discharging white mud. An adsorption and filtration assembly is provided on the hollow rotating cylinder (51) for adsorbing white mud and filtering the lye in the white mud. A plurality of groups of ceramic scraping plates (6) are slidably connected to the top of the processing frame body (12) at even intervals. Each group of ceramic scraping plates (6) has two and is arranged on both sides. A blowing assembly and a flushing assembly are installed on the frame (1). The flushing assembly is used for flushing the pre-coated layer; The adsorption and filtration assembly includes an air inlet disc (511), a vacuum pipe (21), a gas distribution cylinder (512), a guide air pipe (53), and a ceramic filter disc (52). Air inlet discs (511) are rotatably connected to both the left and right ends of the hollow rotating cylinder (51). The suction end of the vacuum pump (2) is connected to a vacuum pipe (21), and the vacuum pipe (21) communicates with the air inlet disc (511). Gas distribution cylinders (512) are connected to the inner parts on both sides of the hollow rotating cylinder (51). A plurality of guide air pipes (53) are evenly spaced and communicated between the gas distribution cylinders (512) of the air inlet discs (511) on both sides. The number of the guide air pipes (53) is the same as the number of through holes. A plurality of groups of ceramic filter discs (52) are evenly spaced and connected to the hollow rotating cylinder (51). The number of each group of ceramic filter discs (52) is the same as the number of the guide air pipes (53) and is annularly connected to the hollow rotating cylinder (51). The scraping part of each group of ceramic scraping plates (6) faces the ceramic filter disc (52). A plurality of guide air pipes (53) respectively communicate with a plurality of ceramic filter discs (52) in the same group. When the vacuum pump (2) operates, it can make the ceramic filter disc (52) generate suction to adsorb the white mud at the frame (1) and extract the lye in the white mud; A blocking block is arranged in the air inlet disc (511) for blocking the position where the air inlet disc (511) communicates with the gas distribution cylinder (512); The blowing assembly includes an air pump (81) and a blowing air pipe (82). An air pump (81) is installed on the frame (1). The air outlet end of the air pump (81) is connected to a blowing air pipe (82). Vent holes are provided on both the air inlet disc (511) and the blocking block. The blowing air pipe (82) communicates with the vent holes so that when the vent holes are aligned with the blocking block, gas can be injected into the through holes through the vent holes.

2. The efficient replacement device for a white mud pre-hanging layer according to claim 1, characterized in that: The flushing assembly includes an intelligent water tank (91), a water outlet pipe (92), and a spray pipe (93). An intelligent water tank (91) is installed on the frame (1). A water outlet pipe (92) communicates with the intelligent water tank (91). A plurality of groups of spray pipes (93) are evenly spaced and connected to the water outlet pipe (92). Each group of spray pipes (93) has two and the positions of the nozzles face the ceramic filter disc (52) close to them.

3. The efficient replacement device for a white mud pre-hanging layer according to claim 2, characterized in that: The machine also comprises a fixed bracket (71), an upper rack (711), a transmission gear (712), a lower rack (713) and a toggle assembly. The fixed bracket (71) is mounted on the top of the frame (1). The upper rack (711) and the lower rack (713) are slidably connected on the upper and lower sides of the fixed bracket (71). The upper rack (711) is connected to the ceramic scraper (6) on one side of each group, and the lower rack (713) is connected to the ceramic scraper (6) on the other side of each group. The fixed bracket (71) is evenly spaced and rotatably connected to the transmission gear (712). The two sides of the transmission gear (712) are respectively meshed with the upper rack (711) and the lower rack (713). A toggle assembly is provided between the ceramic scraper (6) and the frame (1). The toggle assembly is used to drive the ceramic scraper (6) to move.

4. The efficient replacement device for a white mud pre-hanging layer according to claim 3, characterized in that: The toggle assembly comprises a toggle gear rod (72), a slider (721), a connecting rod (722) and a bevel gear (723); each group of ceramic filter discs (52) has a ceramic filter disc (52) connected to a toggle gear rod (72); the positions of each ceramic filter disc (52) connected to the toggle gear rod (72) are aligned with each other; the processing frame (12) is evenly spaced and connected to bevel gears (723) of the same number as the number of groups of ceramic scrapers (6); the rotation of the toggle gear rod (72) can drive the bevel gears (723) to rotate; each group of ceramic scrapers (6) has a ceramic scraper (6) connected to a slider (721); the slider (721) is slidably connected to the frame (1); and a connecting rod (722) is hingedly connected between the slider (721) and the eccentric position of the bevel gear (723).

5. The efficient replacement device for a white mud pre-hanging layer according to claim 4, characterized in that: It also includes a contact switch (10), which is mounted on the processing frame (12), wherein one of the ceramic scrapers (6) is movable to contact the contact switch (10), and the contact switch (10) is electrically connected to the air pump (81) and the intelligent water tank (91) respectively.

6. The efficient replacement device for a white mud pre-hanging layer according to claim 5, characterized in that: It also includes a collecting frame (11), the collecting frame (11) is connected to the frame (1), and the discharge end of the discharge port is aligned with the collecting frame (11).

7. An efficient replacement method for a white mud pre-hanging layer using any one of the devices according to claims 1-6, characterized in that: The specific steps for replacing the pre-hanging layer are as follows: S1: The ceramic scrapers (6) on both sides are placed close to the ceramic filter disc (52), and the reduction motor (3) is operated to rotate the ceramic filter disc (52), so that the ceramic scrapers (6) scrape off the pre-coated layer on the ceramic filter disc (52); S2: starting the air pump (81), and the air pump (81) operates to blow air out from the ceramic filter plate (52), thereby blowing out the white mud pre-coating layer attached to the ceramic filter plate (52); S3: starting the intelligent water tank (91) to operate. The intelligent water tank (91) sprays water onto the ceramic filter disc (52) through the water outlet pipe (92) and the spray pipe (93) to wash the white mud pre-coating layer on the ceramic filter disc (52); S4: The ceramic filter disc (52) continues to rotate to absorb the white mud, and a new white mud pre-coating layer is formed on the ceramic filter disc (52).

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