Negative pressure impurity filtering device and method for removing solid particles in scrap removing liquid

Abstract

The invention relates to the technical field of filtering, and particularly discloses a negative pressure impurity filtering device for removing solid particles in scrap removing liquid, which comprises a rotary drum frame, an empty groove formed in the annular side of the rotary drum frame, a box body arranged outside the rotary drum frame, and a driving assembly arranged outside the box body and used for driving the rotary drum frame to rotate, an empty groove is formed in the rotating drum frame, the rotating drum frame is provided with filter cloth for filtering in the empty groove, an adsorption pipe fitting for generating negative pressure is arranged in the rotating drum frame, the size of the filter cloth is larger than that of the interior of the empty groove, and the pushing assembly is used for pushing the filter cloth from the interior to enable the filter cloth to deform so as to enable a filter cake to fall off. Through the matching of the structure, the T-shaped frame can extrude the filter cloth to deform the filter cloth, the influence of excessive accumulation of filter cakes on the subsequent filtering effect is avoided, meanwhile, the filter cakes are removed without adopting an external scraping mode, the condition that the filter cloth is scratched by metal chips when the filter cakes are scraped is reduced, and thus the service life of the filter cloth is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of filtration technology, and in particular to a negative pressure impurity filtering device and method for removing solid particles in a chip removal liquid. Background Art

[0002] During metal cutting, grinding and other processing processes, a large amount of frictional heat is generated between the tool and the workpiece. The chip removal fluid can quickly absorb this heat and take the heat away from the processing area to prevent the workpiece and tool from being damaged due to overheating. During the metal processing process, various impurities such as chips, debris and abrasive particles are generated. The chip removal fluid can wash away these impurities and keep the working area of ​​the machine tool clean. In order to reuse the chip removal fluid, the solid impurities in the chip removal fluid need to be separated and removed to prevent solid iron chips and other impurities from scratching the workpiece surface when used next time, affecting the processing accuracy and surface finish.

[0003] In the prior art, drum filtration is used to remove impurities. As the drum rotates continuously, more and more impurities are intercepted and gradually accumulate on the surface of the filter screen or filter cloth to form a filter cake. In order to ensure the efficiency of filtration, it is usually necessary to remove the filtered impurities.

[0004] For example, the "Drum Filter System" with publication number "CN119607677A" mainly relies on the unloading scraper to be tightly attached to the surface of the filter cloth. As the drum rotates, the unloading scraper will scrape off the filter cake trapped on the surface of the filter cloth, thereby maintaining the filtration efficiency of the filter cloth. Although the above scheme can remove impurities on the filter cloth and improve the filtration effect, in actual use, the scraper is close to the filter cloth and it is easy to damage the filter cloth. The chip removal liquid contains a large amount of metal chips. When scraping, the metal chips will damage the filter cloth, thereby affecting the normal filtration. Replacing the filter cloth also takes a lot of time, affecting the filtration efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a negative pressure impurity filtering device and method for removing solid particles in a debris removal liquid, which can enable a T-shaped frame to squeeze the filter cloth to deform the filter cloth, thereby avoiding excessive accumulation of filter cakes that affects the effect of subsequent filtration. At the same time, there is no need to use external scraping to remove the filter cake, which reduces the situation where metal chips scratch the filter cloth when scraping the filter cake, thereby increasing the service life of the filter cloth, reducing the frequency of filter cloth replacement, and thus improving the filtration efficiency, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a negative pressure impurity filter device for removing solid particles from a chip removal liquid, comprising a drum frame, a hollow groove being provided on the ring side of the drum frame, a box body being disposed outside the drum frame, a drive assembly being disposed outside the box body for driving the drum frame to rotate, a filter cloth for filtering being disposed in the hollow groove of the drum frame, an adsorption tube for generating negative pressure being disposed inside the drum frame, the filter cloth being larger than the inner size of the hollow groove, and the filter device further comprising:

[0007] The push-up assembly is used to push the filter cloth from the inside to deform the filter cloth and cause the filter cake to fall off. The push-up assembly includes:

[0008] Fixed ring plate, both sides of which are installed on the inner side of the drum frame, the fixed ring plate is equipped with a T-shaped frame, the T-shaped frame is equipped with a tilting sleeve, the outside of the adsorption pipe is equipped with a limit frame for moving the tilting sleeve, and a spring is installed between the tilting sleeve and the fixed ring plate;

[0009] The bottom of the tilting sleeve is provided with a shaking portion for causing the T-shaped frame to reciprocate.

[0010] Preferably, the limiting frame is rotatably connected to a circular shaft away from the adsorption tube, the inclined sleeve is arranged obliquely on one side of the rotation direction of the drum frame, the rear end of the adsorption tube passes through the rear end center of the drum frame, and the top of the limiting frame is arranged obliquely;

[0011] A discharge trough is provided on the right side of the drum frame, and an inclined receiving plate is installed at the discharge trough on the right side of the drum frame.

[0012] Preferably, the shaking unit includes:

[0013] There are multiple shaking blocks, and the multiple shaking blocks are linearly arranged at the bottom of the inclined sleeve.

[0014] Preferably, the filtering device further comprises:

[0015] A blowing assembly is used to assist in cleaning the filter cloth, and is arranged between the inclined sleeve and the filter cloth. The blowing assembly includes a long plate installed on the outside of the inclined sleeve, and the blowing assembly also includes a fixed frame arranged on the side of the fixed ring plate close to the inclined sleeve. A corrugated bag is installed between the fixed frame and the long plate. The corrugated bag is fixedly connected with an inlet pipe near the adsorption pipe fitting, and a first check valve is installed inside the inlet pipe. A discharge assembly is arranged on the side of the corrugated bag close to the filter cloth, and the discharge assembly includes a rubber belt. Discharge frames are arranged on both sides of the rubber belt. The side of the discharge frame away from the rubber belt rotates with the drum frame, and the side of the discharge frame close to the filter cloth is fixedly connected with a small tube for ejecting gas.

[0016] Preferably, the discharge assembly further comprises:

[0017] The elastic bag is located inside the fixed frame, a through pipe is fixedly connected between the elastic bag and the corrugated bag, a top pipe is fixedly connected to the elastic bag away from the through pipe, a connecting pipe is fixedly connected between the top of the top pipe and the discharge frame, and both the top pipe and the through pipe are fixed to the fixed frame.

[0018] Preferably, the discharge assembly further comprises:

[0019] The piston plate is arranged inside the top tube, the diameter of the top tube close to the filter cloth is larger than the diameter of the part away from the filter cloth, and the outer side of the piston plate is in contact with the part of the top tube with a smaller diameter;

[0020] A fixing rod is fixedly connected between the bottom of the piston plate and the corrugated bag, and the fixing rod passes through the through pipe.

[0021] Preferably, the bellows is made of metal.

[0022] Preferably, the inlet pipe extends into a position close to the middle of the drum frame.

[0023] Preferably, the outer wall of the T-shaped frame is located on the side of the rubber belt close to the adsorption tube and is fixedly connected to the adjustment plate, and the top area of ​​the T-shaped frame is located on the side of the rubber belt away from the adsorption tube;

[0024] The interior of the tilting sleeve is hollow, and the outer wall of the T-shaped frame is located on a side of the adjustment plate close to the adsorption pipe fitting and is fixedly connected with a limiting plate.

[0025] A method for filtering solid particles in a dandruff removal liquid comprises the following steps:

[0026] S1, filtration, adding debris removal liquid into the box, rotating the drum frame to rotate multiple filter cloths into the debris removal liquid for filtration;

[0027] S2: Remove impurities. The T-shaped frame squeezes the filter cloth, causing the filter cake on the outer surface of the filter cloth to break and fall off.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. Through the action of the push-up assembly, the T-shaped frame can squeeze the filter cloth to deform the filter cloth, thus avoiding excessive accumulation of filter cakes that affect the subsequent filtration effect. At the same time, there is no need to use external scraping to remove the filter cake, which reduces the risk of metal chips scratching the filter cloth when scraping the filter cake, thereby extending the service life of the filter cloth and reducing the frequency of filter cloth replacement, thereby improving filtration efficiency;

[0030] 2. Through the action of the shaking part, the inclined sleeve can make the T-shaped frame shake up and down reciprocatingly, which is beneficial to improve the effect of filter cake crushing and separation, further improve the effect of filter cake treatment, thereby further reducing the blockage of the filter cloth and improving the subsequent filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is an overall structural view of the present invention;

[0033] Figure 2 It is a schematic side view of the overall structure of the present invention;

[0034] Figure 3 It is a schematic diagram of a half-section structure of the present invention;

[0035] Figure 4 For the present invention Figure 3 Schematic diagram of the partial side section structure of

[0036] Figure 5 It is a partial half-section structural schematic diagram of the drum frame of the present invention;

[0037] Figure 6 It is a schematic diagram of a half-section structure of the tilting sleeve of the present invention;

[0038] Figure 7 It is a partial structural schematic diagram of the fixed ring plate of the present invention;

[0039] Figure 8 Schematic diagram of a half-section structure of the corrugated bag of the present invention;

[0040] Figure 9 It is a schematic diagram of the partial structure of the adjustment plate of the present invention;

[0041] Figure 10 It is a schematic diagram of a partial top view of the discharge frame of the present invention.

[0042] Description of reference numerals:

[0043] 1. Drum frame; 2. Empty slot; 3. Box body; 4. Drive assembly; 5. Filter cloth; 6. Push-up assembly; 61. Fixed ring plate; 62. T-shaped frame; 63. Tilting sleeve; 64. Limiting frame; 65. Shaking part; 651. Shaking block; 66. Spring; 67. Round shaft; 7. Blowing assembly; 71. Long plate; 72. Fixed frame; 73. Bellows; 74. Inlet pipe; 75. First check valve; 8. Discharge assembly; 81. Rubber belt; 82. Discharge frame; 83. Small tube; 84. Elastic bag; 85. Through pipe; 86. Connecting pipe; 87. Piston plate; 88. Fixed rod; 89. Top pipe; 9. Limiting plate; 10. Adsorption pipe fitting; 11. Discharge chute; 12. Receiving plate; 13. Adjusting plate. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0045] Example 1: Please refer to Figures 1 to 7 The present invention provides a technical solution: a negative pressure impurity filtering device for removing solid particles in a desquamation liquid, comprising a drum frame 1, an empty groove 2 being provided on the ring side of the drum frame 1, a box body 3 being arranged outside the drum frame 1, the drum frame 1 rotating along the middle part of the box body 3, a driving assembly 4 being arranged outside the box body 3 for driving the drum frame 1 to rotate, a filter cloth 5 for filtering being fixed in the empty groove 2 of the drum frame 1, an adsorption tube 10 being arranged for generating negative pressure in a rotating manner inside the drum frame 1, the size of the filter cloth 5 being larger than the size inside the empty groove 2, the filtering device further comprising a pushing assembly 6 for pushing the filter cloth 5 from the inside to deform the filter cloth 5 and cause the filter cake to fall off, the pushing assembly 6 comprising a fixed ring plate 61, both sides of the fixed ring plate 61 being fixedly mounted on the inner side of the drum frame 1, the fixed ring plate 61 being slidingly provided with a T-shaped frame 62, the T-shaped The bottom of the frame 62 is fixedly connected with an inclined sleeve 63, and the adsorption tube 10 is provided with a limit frame 64 for moving the inclined sleeve 63. A spring 66 is fixedly installed between the inclined sleeve 63 and the fixed ring plate 61. The bottom of the inclined sleeve 63 is provided with a shaking part 65 that makes the T-shaped frame 62 reciprocate. The limit frame 64 is rotatably connected with a circular shaft 67 away from the adsorption tube 10. The inclined sleeve 63 is located on one side of the rotation direction of the drum frame 1 and is inclined. The rear end of the adsorption tube 10 passes through the rear end center of the drum frame 1. The top of the limit frame 64 is inclined. A discharge trough 11 is provided on the right side of the drum frame 1. An inclined receiving plate 12 is fixedly installed at the discharge trough 11 on the right side of the drum frame 1. A suction pipe for pumping debriding liquid into the box body 3 is fixedly connected to the top left side of the box body 3, and a liquid pump is installed in the suction pipe.

[0046] By adopting the above technical solution, the driving component 4 adopts a bent frame installed at the rear end of the box body 3, the bent frame is fixedly connected to the motor, and a gear is fixedly connected between the outer wall of the driving shaft of the motor and the rear end of the drum frame 1. The two gears are engaged with each other, and the driving shaft of the motor rotates. Under the action of the mutual engagement of the two gears, the drum frame 1 can be rotated. The outer wall of the adsorption tube 10 is fixed to the bent frame, and the adsorption tube 10 is located outside the box body 3 and is connected to the vacuum pump. The adsorption tube 10 is equipped with a distribution valve, and the adsorption tube 10 is fixed near the distribution valve. A suction pipe is fixedly connected, and the bottom of the suction pipe is vertically downward, which is convenient for extracting the filtered de-chipping oil. During filtering, the adsorption tube 10 provides negative pressure to the inside of the drum frame 1 so as to form a filter cake on the filter cloth 5 to achieve filtration of the de-chipping oil. The technology of this part is a mature existing technology of vacuum drum filtering equipment. Its principle will not be elaborated in detail. The suction pipe is close to the inner wall of the rear end of the box body 3, and will not affect the rotation of the multiple corrugated bags 73 following the drum frame 1, and a hose can be connected to its bottom to reduce the impact on the rotation of the internal structure of the drum frame 1.

[0047] During filtering, the suction pipe on the left side of the top of the box body 3 is inserted into the interior of the de-chipping liquid tank, and then the liquid pump installed on the suction pipe is started, so that the de-chipping liquid with impurities enters the interior of the box body 3 and is located outside the drum, and is filtered by starting the external vacuum pump.

[0048] It should be noted that a liquid level sensor is provided in the box 3 for detecting the liquid level and transmitting a signal to control the amount of the de-crushing liquid added to the box 3 . During filtration, the liquid level of the de-crushing liquid is controlled at the lower plate portion of the drum frame 1 .

[0049] It should be noted that, during filtration, due to the negative pressure generated inside the drum frame 1 , the filter cloth 5 has a concave arc in the direction toward the drum frame 1 .

[0050] The limiting frame 64 is composed of two slides that slide with each other, one of which is fixed to the adsorption tube 10, and the other slide is rotatably connected to the circular shaft 67. A waterproof electric telescopic rod is fixedly connected between the two slides, and the circuit line of the electric telescopic rod can be arranged from the inside of the adsorption tube 10. When filtering, the electric telescopic rod is in a retracted state, so that when the drum frame 1 rotates, the circular shaft 67 cannot squeeze the inclined sleeve 63. When the filter cake 5 reaches a certain thickness and needs to be removed, the excess debris removal liquid in the box body 3 is first discharged from the pipe at the bottom of the box body 3, and then the filter residue is removed. During the processing, the output of the electric telescopic rod is extended so that when the drum frame 1 rotates, the circular shaft 67 can squeeze the inclined sleeve 63. As the drum frame 1 rotates, when one of the filter cloths 5 rotates to When it is on the right side and slightly tilted, the corresponding tilting sleeve 63 rotates to the circular shaft 67. Under the limiting and squeezing action of the circular shaft 67, the circular shaft 67 squeezes the tilting sleeve 63, so that the tilting sleeve 63 can move in the direction close to the filter cloth 5, thereby causing the T-shaped frame 62 to move close to the filter cloth 5. The T-shaped frame 62 squeezes the inner side of the filter cloth 5 with a larger setting area near the filter cloth 5 to deform the filter cloth 5, making it easy to break and fall off the filter cake on the outer surface of the filter cloth 5, thereby facilitating the dredging of the filter cake and avoiding excessive accumulation of filter cake affecting the effect of subsequent filtration. At the same time, there is no need to use external scraping to remove the filter cake, reducing the situation where metal chips scratch the filter cloth 5 when scraping the filter cake, thereby increasing the service life of the filter cloth 5 and reducing the frequency of replacing the filter cloth 5, thereby improving the filtration efficiency.

[0051] When the filter cloth 5 is deformed, the contact area and pressure distribution between the filter cloth 5 and the filter cake change. The originally uniform contact surface becomes irregular, and loose contact may occur in some parts, which is conducive to the filter cake breaking and falling off. The fallen filter cake falls on the receiving plate 12 due to gravity and is discharged from the discharge chute 11.

[0052] When the tilting sleeve 63 rotates away from the circular shaft 67 , the tilting sleeve 63 and the T-shaped frame 62 are reset under the elastic force of the spring 66 .

[0053] The shaking portion 65 includes a plurality of shaking blocks 651 , and the plurality of shaking blocks 651 are linearly arranged and fixed on the bottom of the tilting sleeve 63 .

[0054] The filter cloth 5 is in a state of being deformed outwards, and the filter cloth 5 can also be slightly offset outwards at this time. At this time, as the drum frame 1 continues to rotate, the circular shaft 67 can reach the area of ​​the shaking portion 65 and pass through multiple shaking blocks 651. In this process, when a single shaking block 651 is limited by the circular shaft 67, the inclined sleeve 63 moves slightly upwards with the T-shaped frame 62. After the circular shaft 67 passes, under the elastic force of the spring 66, the inclined sleeve 63 and the T-shaped frame 62 are reset, so that when the circular shaft 67 passes through the shaking portion 65, the inclined sleeve 63 and the T-shaped frame 62 can be reciprocated up and down. This is beneficial to improve the effect of filter cake crushing and separation, further improve the effect of filter cake processing, thereby further reducing the blockage of the filter cloth and improving the subsequent filtering effect.

[0055] See also Figures 2 to 10 , Embodiment 2: The technical solution of this embodiment is different from that of embodiment 1 in that the filtering device also includes a cleaning and blowing component 7 for assisting in cleaning the filter cloth 5, which is arranged between the inclined sleeve 63 and the filter cloth 5, and the cleaning and blowing component 7 includes a long plate 71 installed on the outside of the inclined sleeve 63. The cleaning and blowing component 7 also includes a fixed frame 72 arranged on the side of the fixed ring plate 61 close to the inclined sleeve 63. A corrugated bag 73 is fixedly installed between the fixed frame 72 and the long plate 71. The corrugated bag 73 is fixedly plugged with an inlet pipe 74 near the adsorption tube 10. A first check valve 75 is installed inside the inlet pipe 74. A discharge component 8 is arranged on the side of the corrugated bag 73 close to the filter cloth 5. The discharge component 8 includes a rubber belt 81, and a discharge frame 82 is fixedly arranged on both sides of the rubber belt 81. The discharge frame 82 rotates with the drum frame 1 on the side away from the rubber belt 81, and a small tube 83 for ejecting gas is fixedly plugged on the side of the discharge frame 82 close to the filter cloth 5.

[0056] By adopting the above technical solution, after the filter cake falls off, some impurities still clog the filter cloth 5, so the device is provided with a blowing component 7 and a discharge component 8.

[0057] When the inclined sleeve 63 and the T-shaped frame 62 are limited and move, the inclined sleeve 63 can move with the long plate 71 toward the direction of the corrugated bag 73, and the long plate 71 cooperates with the fixed frame 72 to squeeze the corrugated bag 73, so that the corrugated bag 73 is squeezed, so that the air inside the corrugated bag 73 enters the interior of the exhaust frame 82, and the air inside the corrugated bag 73 can be ejected from the small tube 83. This design is conducive to improving the effect of cleaning the filter cake, further reducing the blockage of the filter cloth 5 and improving the subsequent filtering effect.

[0058] It should be noted that the torque provided by the driving assembly 4 is relatively large, and is much greater than the resistance of the drum frame 1 during rotation.

[0059] When the tilting sleeve 63 and the T-shaped frame 62 are reset by the elastic force of the spring 66, the bellows 73 stretches, making it easier for air to enter the bellows 73 from the inside of the inlet pipe 74, so as to facilitate the next blowing.

[0060] The discharge assembly 8 also includes an elastic bag 84, which is located inside the fixed frame 72. A through-tube 85 is fixedly connected between the elastic bag 84 and the corrugated bag 73. A top tube 89 is fixedly connected to the elastic bag 84 away from the through-tube 85. A connecting pipe 86 is fixedly connected between the top of the top tube 89 and the discharge frame 82. Both the top tube 89 and the through-tube 85 are fixed to the fixed frame 72. The discharge assembly 8 also includes a piston plate 87, which is arranged inside the top tube 89. The diameter of the top tube 89 close to the filter cloth 5 is larger than the diameter of the part away from the filter cloth 5. The outer side of the piston plate 87 fits with the part with a smaller diameter of the top tube 89, and the bottom of the piston plate 87 fits with the corrugated bag 73. A fixing rod 88 is fixedly connected between the corrugated bags 73, and the fixing rod 88 passes through the through tube 85. The corrugated bag 73 is made of metal, and the inlet pipe 74 extends into a position near the middle of the drum frame 1. The outer wall of the T-shaped frame 62 is located on the side of the rubber belt 81 close to the adsorption tube 10 and is fixedly connected to the adjustment plate 13. The top area of ​​the T-shaped frame 62 is located on the side of the rubber belt 81 away from the adsorption tube 10. The interior of the inclined sleeve 63 is hollow. The outer wall of the T-shaped frame 62 is located on the side of the adjustment plate 13 close to the adsorption tube 10 and is fixedly connected to the limiting plate 9. When the limiting plate 9 is close to the fixed ring plate 61 and fits the fixed ring plate 61, the spring 66 is still in a slightly compressed state.

[0061] The check valve is a mature existing technology and will not be elaborated on. The design of the first check valve 75 allows only air to flow from the outside to the bellows 73 inside the inlet pipe 74, and a second check valve is installed on the connecting pipe 86 near the discharge frame 82, which only allows the air in the connecting pipe 86 to be discharged from the top pipe 89 to the discharge frame 82. The inlet pipe 74 extends into a position near the middle of the drum frame 1, so that the opening of the inlet pipe 74 is higher than the liquid level to prevent the debriding liquid from entering. The second check valve also prevents the debriding liquid from entering the bellows 73. When cleaning, the excess debriding liquid in the box body 3 is discharged from the pipe at the bottom of the box body 3. As the drum frame 1 rotates, it is conducive to discharging a small amount of debriding liquid in the discharge frame 82.

[0062] By adopting the above technical solution, when the inclined sleeve 63 and the T-shaped frame 62 move to make the bellows 73 in an extended state, the piston plate 87 is located at the position where the diameter of the top tube 89 is smaller. In the initial state of compression of the bellows 73, the piston plate 87 is maintained at the portion with the smaller diameter of the top tube 89. Under the effect of the outer side of the piston plate 87 fitting the portion with the smaller diameter of the top tube 89, the gas cannot be discharged. At this time, the gas will accumulate inside the elastic bag 84, thereby causing the elastic bag 84 to expand and the internal pressure of the elastic bag 84 to increase. When the inclined sleeve 63 and the T-shaped frame 62 move to make the T-shaped frame 62 After squeezing the filter cloth 5, causing part of the filter cake to fall off, as the corrugated bag 73 is compressed, the fixed rod 88 moves with the piston plate 87, so that the piston plate 87 just reaches the part with the larger diameter of the top tube 89. At this time, the gas can be discharged, and because the gas has previously entered the interior of the elastic bag 84, under the action of the elastic force of the elastic bag 84, the gas can enter the discharge frame 82 and be discharged from the small tube 83, which is conducive to blowing the filter cloth 5 after most of the filter cake falls off, thereby facilitating the removal of impurities remaining after the filter cake of the filter cloth 5 falls off, thereby improving the impurity cleaning effect.

[0063] It should be noted that when the piston plate 87 reaches the part with a larger diameter of the top tube 89, more air accumulates inside the elastic bag 84, which makes the internal pressure of the elastic bag 84 high. In this way, the air inside the elastic bag 84 can quickly enter the connecting pipe 86, the discharge frame 82 and the small tube 83 and be discharged, which is conducive to increasing the air flow rate and improving the effect of blowing away impurities.

[0064] In the initial state, the discharge frame 82 is relatively far away from the filter cloth 5, reducing the blockage of the filter cloth 5 during filtering. When the piston plate 87 reaches the part with a larger diameter of the top tube 89, the adjusting plate 13 moves accordingly. At this time, the adjusting plate 13 squeezes the discharge frame 82, causing the discharge frame 82 to rotate. In this way, the discharge frame 82 is close to the filter cloth 5. When the air is ejected, the small tube 83 is close enough to the filter cloth 5, further improving the cleaning effect of the filter cloth 5. After the tilting sleeve 63 and the T-shaped frame 62 are reset, the top position of the T-shaped frame 62 squeezes the rubber belt 81, thereby facilitating the rotation and reset of the discharge frame 82.

[0065] It should be noted that when the air is ejected, the inclined sleeve 63 and the T-shaped frame 62 are still in motion, so that the discharge frame 82 is still rotating. This design is conducive to changing the ejection angle of the small tube 83, reducing the blind area of ​​the ejection, and further improving the cleaning effect of the filter cloth 5.

[0066] A method for filtering solid particles in a dandruff removal liquid comprises the following steps:

[0067] S1, through the suction pipe on the left side of the top of the box body 3, extend into the interior of the de-chipping liquid tank, rotate the drum frame 1 to rotate the multiple filter cloths 5 into the de-chipping liquid, then start the liquid pump inside the suction pipe, so that the de-chipping liquid with impurities enters the interior of the box body 3 and is located outside the drum, and is filtered by starting the external vacuum pump;

[0068] S2. As the drum frame 1 rotates, when one of the filter cloths 5 rotates to the right and tilts slightly, the corresponding inclined sleeve 63 rotates to the circular shaft 67. Under the limiting and squeezing action of the circular shaft 67, the circular shaft 67 squeezes the inclined sleeve 63, which can make the inclined sleeve 63 move in the direction close to the filter cloth 5, thereby making the T-shaped frame 62 move close to the filter cloth 5. The T-shaped frame 62 squeezes the inner side of the filter cloth 5 with a larger area near the filter cloth 5 to deform the filter cloth 5, making it easy to make the filter cake on the outer surface of the filter cloth 5 break and fall off, thereby dredging the filter cake and avoiding excessive accumulation of filter cake that affects the effect of subsequent filtration. At the same time, there is no need to use external scraping to remove the filter cake.

[0069] Working principle: the shaft 67 can reach the area of ​​the shaking part 65 and pass through multiple shaking blocks 651. During this process, when a single shaking block 651 is limited by the circular shaft 67, the inclined sleeve 63 moves slightly upward with the T-shaped frame 62. After the circular shaft 67 passes, under the elastic force of the spring 66, the inclined sleeve 63 returns to its original position with the T-shaped frame 62, so that when the circular shaft 67 passes through the shaking part 65, the inclined sleeve 63 can shake back and forth with the T-shaped frame 62, which is beneficial to improve the effect of filter cake crushing and separation, and further improve the effect of filter cake treatment.

[0070] The long plate 71 cooperates with the fixed frame 72 to squeeze the bellows 73, so that the bellows 73 is squeezed, so that the air inside the bellows 73 enters the interior of the exhaust frame 82, and the air inside the bellows 73 can be ejected from the small tube 83. This design is conducive to improving the effect of cleaning the filter cake, further reducing the blockage of the filter cloth 5 and improving the subsequent filtering effect. When the inclined sleeve 63 and the T-shaped frame 62 move to squeeze the filter cloth 5, causing part of the filter cake to fall off, at this time, as the bellows 73 is compressed, the fixed rod 88 moves with the piston plate 87, so that the piston plate 87 just reaches the top The gas can be discharged from the part with a larger diameter of the tube 89 at this time, and because the gas has previously entered the interior of the elastic bag 84, under the action of the elastic force of the elastic bag 84, the gas can enter the discharge frame 82 and be discharged from the small tube 83, which is conducive to cleaning the filter cloth 5 after most of the filter cakes fall off, thereby facilitating the removal of impurities remaining after the filter cakes fall off the filter cloth 5. The air inside the elastic bag 84 accumulates more, making the internal pressure of the elastic bag 84 high, so that the air inside the elastic bag 84 can quickly enter the connecting pipe 86, the discharge frame 82 and the small tube 83 for discharge, which is conducive to making the air flow rate high and improving the effect of blowing off impurities.

[0071] The adjusting plate 13 moves accordingly, and at this time the adjusting plate 13 squeezes the discharge frame 82, causing the discharge frame 82 to rotate, so that the discharge frame 82 is close to the filter cloth 5. When the air is ejected, the small tube 83 is close enough to the filter cloth 5, further improving the cleaning effect of the filter cloth 5. After the inclined sleeve 63 and the T-shaped frame 62 are reset, the top position of the T-shaped frame 62 squeezes the rubber belt 81, thereby facilitating the rotation and reset of the discharge frame 82. When the air is ejected, the inclined sleeve 63 and the T-shaped frame 62 are still in motion, causing the discharge frame 82 to continue rotating. This design is conducive to changing the ejection angle of the small tube 83, reducing the blind area of ​​the ejection, and further improving the cleaning effect of the filter cloth 5.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A negative pressure impurity filtering device for removing solid particles in a de-shaving liquid, comprising a drum frame (1), a hollow groove (2) provided on the ring side of the drum frame (1), a housing (3) disposed outside the drum frame (1), a driving assembly (4) for driving the drum frame (1) to rotate disposed outside the housing (3), a filter cloth (5) for filtering disposed in the hollow groove (2) of the drum frame (1), an adsorption pipe (10) for generating negative pressure disposed inside the drum frame (1), characterized in that: The size of the filter cloth (5) is larger than the size inside the empty slot (2), and the filtering device further comprises: The pushing assembly (6) is used to push the filter cloth (5) from the inside to deform the filter cloth (5) and cause the filter cake to fall off. The pushing assembly (6) includes: A fixed ring plate (61), both sides of which are mounted on the inner side of the drum frame (1), the fixed ring plate (61) is provided with a T-shaped frame (62), the T-shaped frame (62) is provided with an inclined sleeve (63), a limiting frame (64) for moving the inclined sleeve (63) is mounted on the outside of the adsorption tube (10), and a spring (66) is mounted between the inclined sleeve (63) and the fixed ring plate (61); The bottom of the tilting sleeve (63) is provided with a shaking portion (65) for causing the T-shaped frame (62) to reciprocate.

2. A negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 1, characterized in that: The limiting frame (64) is rotatably connected to a circular shaft (67) away from the adsorption tube (10); the tilting sleeve (63) is tilted on one side of the rotation direction of the drum frame (1); the rear end of the adsorption tube (10) passes through the rear end center of the drum frame (1); and the top of the limiting frame (64) is tilted; A discharge trough (11) is provided on the right side of the drum frame (1), and an inclined receiving plate (12) is installed at the discharge trough (11) on the right side of the drum frame (1).

3. A negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 1, characterized in that: The shaking unit (65) includes: The shaking blocks (651) are arranged in a plurality, and the plurality of shaking blocks (651) are arranged in a linear array at the bottom of the inclined sleeve (63).

4. A negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 1, characterized in that: The filter device also includes: A blowing assembly (7) for assisting in cleaning the filter cloth (5) is arranged between the inclined sleeve (63) and the filter cloth (5), the blowing assembly (7) comprising a long plate (71) mounted on the outside of the inclined sleeve (63), the blowing assembly (7) further comprising a fixed frame (72) disposed on a side of the fixed ring plate (61) close to the inclined sleeve (63), a corrugated bag (73) being mounted between the fixed frame (72) and the long plate (71), and a fixed insert having an inlet near the adsorption tube (10) being fixed to the corrugated bag (73). A first check valve (75) is installed inside the inlet pipe (74); a discharge assembly (8) is arranged on the side of the bellows (73) close to the filter cloth (5); the discharge assembly (8) includes a rubber belt (81); discharge frames (82) are arranged on both sides of the rubber belt (81); the side of the discharge frame (82) away from the rubber belt (81) rotates with the drum frame (1); and a small tube (83) for ejecting gas is fixedly connected to the side of the discharge frame (82) close to the filter cloth (5).

5. A negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 4, characterized in that: The discharge assembly (8) further comprises: An elastic bag (84) is located inside the fixed frame (72). A through pipe (85) is fixedly connected between the elastic bag (84) and the corrugated bag (73). A top pipe (89) is fixedly connected to the elastic bag (84) away from the through pipe (85). A connecting pipe (86) is fixedly connected between the top of the top pipe (89) and the discharge frame (82). Both the top pipe (89) and the through pipe (85) are fixed to the fixed frame (72).

6. A negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 5, characterized in that: The discharge assembly (8) further comprises: The piston plate (87) is arranged inside the top tube (89), the diameter of the top tube (89) close to the filter cloth (5) is larger than the diameter of the part away from the filter cloth (5), and the outer side of the piston plate (87) is in contact with the part of the top tube (89) with a smaller diameter; A fixing rod (88) is fixedly connected between the bottom of the piston plate (87) and the bellows bag (73), and the fixing rod (88) passes through the through pipe (85).

7. A negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 4, characterized in that: The bellows (73) is made of metal material.

8. The negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 4, characterized in that: The inlet pipe (74) extends into a position close to the middle of the drum frame (1).

9. The negative pressure impurity filtering device for removing solid particles from a chip removal liquid according to claim 6, characterized in that: The outer wall of the T-shaped frame (62) is located on the side of the rubber belt (81) close to the adsorption tube (10) and is fixedly connected to the adjustment plate (13), and the top area of ​​the T-shaped frame (62) is located on the side of the rubber belt (81) away from the adsorption tube (10); The interior of the tilting sleeve (63) is hollow, and the outer wall of the T-shaped frame (62) is located on a side of the adjustment plate (13) close to the adsorption tube (10) and is fixedly connected to a limiting plate (9).

10. A method for filtering solid particles in a dandruff removal liquid, characterized in that: The method is applicable to the negative pressure impurity filtering device for solid particles in the de-scuring liquid according to any one of claims 1 to 9, comprising the following steps: S1, filtering, adding a descaling liquid into the box (3), rotating the drum frame (1) to rotate the filter cloth (5) into the descaling liquid for filtering; S2, removing impurities, the T-shaped frame (62) squeezes the filter cloth (5), causing the filter cake on the outer surface of the filter cloth (5) to break and fall off.

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