Backwash solid-liquid separation device

Abstract

The present invention discloses a backwash solid-liquid separation device, which belongs to the technical field of solid-liquid separation devices, and comprises a horizontally arranged cylinder, a feed port is arranged above the outer surface of the cylinder, a discharge port is arranged below the outer surface of the cylinder, and a plurality of filter elements are arranged inside the cylinder along the left and right directions, and the filter elements are evenly arranged along the circumferential direction of the cylinder. When the present invention is in use, after the filtrate enters the cylinder, the driving device drives the filter element to revolve and rotate, and then the vacuum device vacuums the inside of the filter element from the right end of the filter element, and the liquid in the filtrate is drawn into the inside of the filter element, and the solid particles in the filtrate are adsorbed on the outer surface of the filter element. As the filtrate is continuously added to the feed port, the liquid in the filtrate is continuously sucked into the inside of the filter element and discharged from the right end of the filter element, and the solid particles in the filtrate are continuously adsorbed on the outer surface of the filter element, so as to achieve the purpose of continuous solid-liquid separation of the filtrate.

Description

Technical Field

[0001] The invention relates to a solid-liquid separation device, in particular to a backwashing solid-liquid separation device. Background Art

[0002] The principle of candle filters is mainly based on cake layer filtration technology. The core component is a number of filter elements arranged in a closed container. These filter elements are usually tubular structures with special filter cloths on their surfaces. The material and pore size of the filter cloth are selected according to the characteristics of the material to be filtered to ensure effective solid-liquid separation. In addition, the filter also includes key components such as the feed port, liquid outlet, backwashing mechanism (such as compressed air or nitrogen supply device), and drain valve. As a highly efficient and precise solid-liquid separation equipment, the candle filter has an internal structure similar to rows of upright candles, hence the name. However, the existing candle filters still have room for improvement in backwashing efficiency, filter cake discharge, etc.

[0003] At present, the reason for the poor solid-liquid separation effect is: in the existing candle filter, the filtrate continues to drop in the filter barrel, which results in less filter residue adsorbed on the upper layer of the filter rod and more filter residue adsorbed on the lower layer of the filter rod, reducing the effective filtration area, making the filter take longer to complete the filtration process, thereby reducing the filtration efficiency.

[0004] Meanwhile, when the existing candle filter is discharging filter residue, conventional air blowing easily causes filter residue powder to float in the filter tank, thereby resulting in low discharge efficiency.

[0005] After searching the patent document with the patent authorization announcement number of CN221432278U, a candle filter for efficiently washing filter residue is provided, including an upper head, a filter cylinder, a filter candle tube and a crushing and stirring device installed on the outside of the filter cylinder; the utility model circulates the cleaning liquid at the bottom of the filter when removing the residue, so as to avoid the filter residues from sticking to each other, thereby providing a guarantee for the sufficient crushing of the filter residue; the crusher fully circulates the liquid below the liquid level switch, and the filter residue at the bottom follows the liquid flow, and is then lifted and crushed by the spiral auger, thereby reducing it to fine particles to a greater extent, which is convenient for the mother liquor in the filter residue to be leached out, the washing of the filter residue takes a short time, the amount of cleaning liquid consumed is small, and the overall washing efficiency is high; the setting method of installing the crusher outside the filter can make the vertical slag discharge channel of the filter unobstructed, so that the filter residue is discharged more thoroughly; there are only two connections between the crusher and the equipment, the upper and lower ports, and the overall disassembly and assembly are convenient, which reduces the work difficulty of the staff.

[0006] In the above scheme, the filter candle tubes are arranged up and down, causing the filtrate to continuously descend in the filter barrel, which results in less filter residue adsorbed on the upper layer of the filter rod and more filter residue adsorbed on the lower layer of the filter rod, reducing the effective filtration area, making the filter take longer to complete the filtration process, thereby reducing the filtration efficiency. Summary of the invention

[0007] The purpose of the present invention is to provide a backwash solid-liquid separation device, which has the advantage that the outer surface of the filter element is uniformly adsorbed with solid particles, and effectively solves the problem in the prior art that the effective filtration area is reduced due to uneven adsorption of solid particles on the outer surface of the filter element, thereby causing low filtration efficiency.

[0008] The present invention adopts the following technical scheme: a backwash solid-liquid separation device, including a horizontally arranged cylinder, a feed port is arranged above the outer surface of the cylinder, a discharge port is arranged below the outer surface of the cylinder, a plurality of filter elements are arranged in the left and right directions inside the cylinder, and the filter elements are evenly arranged along the circumferential direction of the cylinder, a driving device is arranged on the right side of the cylinder, and the driving device is used to drive each filter element to rotate around the axis of the cylinder and around the axis of the filter element; a vacuum device is arranged on the right side of the cylinder, and the vacuum device is used to vacuum from the right end of the filter element so that a vacuum is formed inside the filter element, and a baffle assembly is arranged in the cylinder, and the baffle assembly is used to close and open the discharge port.

[0009] Furthermore, a compressed air system is provided on the left side of the cylinder, and the compressed air system is used to blow compressed air into the interior of the filter element when discharging solid particulate materials.

[0010] Furthermore, the left and right sides of the cylinder are rotatably connected to a left end plate and a right end plate respectively, and each filter element is rotatably connected to the left end plate and the right end plate.

[0011] Furthermore, a one-way valve is provided at the left end of each filter element, and the output end of the compressed air system is connected to the left end of the filter element.

[0012] Furthermore, an air pipe is arranged inside each filter element along the left-right direction, the right end of the air pipe is connected to the output end of the vacuum device, the left end of the air pipe is connected to the output end of the compressed air system, and a plurality of blowing holes are opened on the outer surface of the air pipe along the left-right direction; the left end of the air pipe is rotatably connected to the left end of the corresponding filter element.

[0013] Furthermore, the blowing hole is arranged in a set sector-shaped area of ​​the cross-sectional area of ​​the trachea, a centering hammer is fixedly connected to the left part of the trachea, and the center of gravity of the centering hammer is arranged corresponding to the sector-shaped area of ​​the trachea where the blowing hole is located.

[0014] Furthermore, the inner side surface of the centering hammer has a vertical hole along the up and down directions, a flexible rod is arranged in the vertical hole, a reset spring is fixedly arranged between the upper end surface of the flexible rod and the inner top wall of the vertical hole, and a through hole is opened in the inner top wall of the vertical hole; an oscillation chamber is opened inside the centering hammer, and a plurality of rollers are arranged in the oscillation chamber; an arc-shaped shell fixedly arranged with the cylinder body is arranged on the outer side surface of the left end plate, the axis of the arc-shaped shell coincides with the axis of the cylinder body, and the arc-shaped shell is arranged at the lower part of the left end plate; an air inlet pipe connected with the inside of the arc-shaped shell is fixedly arranged on the outer surface of the arc-shaped shell, and the air inlet pipe is connected with the air outlet end of the compressed air system.

[0015] Furthermore, the baffle assembly includes an arc-shaped hydraulic telescopic rod fixedly arranged on the inner side wall of the cylinder, and the output end of the arc-shaped hydraulic telescopic rod is fixedly arranged on the baffle.

[0016] Furthermore, the driving device includes a planetary gear assembly and a motor, the output end of the motor drives the planetary gear assembly to rotate, and the planetary gear assembly drives each filter element to revolve and rotate; the planetary gear assembly includes a ring gear fixed to the right end of the cylinder, and a plurality of planetary gears meshing with the ring gear, each planetary gear is rotatably connected to the planetary carrier, and the motor drives the planetary carrier to rotate around its own geometric center, the right end of each filter element passes through the right end plate and is fixed to the corresponding planetary gear, and a center gear is coaxially arranged on the right side surface of the right end plate, the center gear is rotatably connected to the right end plate, and the center gear is meshed with each planetary gear.

[0017] Furthermore, the planetary frame is composed of a plurality of legs and a main shaft. The planetary frame is a hollow structure. The legs of the planetary frame are rotatably connected to the corresponding planetary gears. The right end of the air pipe is rotatably connected to the legs of the planetary frame, and the right end of the air pipe is connected to the inside of the legs of the planetary frame; the main shaft of the planetary frame is connected to the output end of the vacuum pump through a rotating joint.

[0018] 1. The present invention is provided with a driving device, a horizontally arranged filter element and a vacuum pumping device. When in use, after the filtrate enters the cylinder body, the driving device drives the filter element to revolve and rotate, and then the vacuum pumping device vacuumizes the interior of the filter element from the right end of the filter element, and the liquid in the filtrate is sucked into the interior of the filter element, and the solid particles in the filtrate are adsorbed on the outer surface of the filter element. As the filtrate is continuously added to the feed port, the liquid in the filtrate is continuously sucked into the interior of the filter element and discharged from the right end of the filter element, while the solid particles in the filtrate are continuously adsorbed on the outer surface of the filter element, thereby achieving the purpose of continuously separating the solid and liquid in the filtrate. Due to the horizontal arrangement of the filter element, the filtrate is fully in contact with the outer surface of the filter element, and the interior of the filter element is vacuumed by the vacuum pumping device, so that the liquid component in the filtrate is extracted, and at the same time, the purpose of adsorbing the solid particles on the outer surface of the filter element is achieved. Since the entire filter element is fully utilized, the filter element utilization rate is improved and the filtration efficiency is improved.

[0019] 2. The present invention sets up a compressed air system. During normal use, although the solid particles on the outer surface of the filter element can be removed, after long-term use, the filter holes of the filter element will be clogged with more solid particles, affecting the filtering performance of the filter element. By blowing compressed air into the filter element 4 from the left end of the filter element through the compressed air system, the filter element can be backwashed, which helps to remove the solid particles on the outer surface of the filter element and blows out the solid particles that are clogged in the filter holes of the filter element. This makes the use of the filter element more efficient and improves the separation efficiency during solid-liquid separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the arc-shaped shell in the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure inside the cylinder in the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the air intake pipe in the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the baffle in the present invention;

[0025] Figure 6 It is a schematic diagram of the internal three-dimensional structure of the filter element in the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the trachea in the present invention;

[0027] Figure 8 It is a schematic diagram of the internal three-dimensional structure of the centering hammer in the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the arc-shaped hydraulic telescopic rod in the present invention;

[0029] Fig.10 For the present invention Fig. 9 A schematic diagram of the enlarged structure in FIG.

[0030] In the figure, 1, cylinder; 2, feed inlet; 3, discharge outlet; 4, filter element; 5, left end plate; 6, right end plate; 7, air pipe; 8, blowing hole; 9, centering hammer; 10, vertical hole; 11, flexible rod; 12, reset spring; 13, through hole; 14, oscillation chamber; 15, roller; 16, arc-shaped shell; 17, air inlet pipe; 18, valve disc; 19, valve hole; 20, valve stem; 21, valve plate; 22, compression spring; 23, air hole; 24, arc-shaped hydraulic telescopic rod; 25, baffle; 26, motor; 27, gear ring; 28, planetary gear; 29, planetary carrier; 30, central gear; 31, support leg; 32, main shaft; 33, driving wheel; 34, driven wheel; 35, synchronous belt; 36, outer cylinder; 37, bracket; 38, cross plate. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0032] See also Figure 1-10 The backwash solid-liquid separation device described in the present invention comprises a horizontally arranged cylinder 1, a feed port 2 is arranged above the outer surface of the cylinder 1, a discharge port 3 is arranged below the outer surface of the cylinder 1, a plurality of filter elements 4 are arranged inside the cylinder 1 along the left and right directions, and the filter elements 4 are evenly arranged along the circumferential direction of the cylinder 1, and a driving device is arranged on the right side of the cylinder 1, and the driving device is used to drive each filter element 4 to rotate around the axis of the cylinder 1 and around the axis of the filter element 4; a vacuum pumping device is arranged on the right side of the cylinder 1, and the vacuum pumping device is used to vacuum from the right end of the filter element 4 during filtration, so that a vacuum is formed inside the filter element 4, and a baffle assembly is arranged inside the cylinder 1, and the baffle assembly is used to close and open the discharge port 3. When filtering the liquid to be filtered normally, the baffle assembly closes the discharge port 3.

[0033] When in use, the baffle assembly closes the discharge port 3, and then pours the filtrate into the cylinder 1 from the feed port 2. After the filtrate enters the cylinder 1, the driving device drives the filter element 4 to revolve around the axis of the cylinder 1, and the filter element 4 rotates around its own axis. Then the vacuum device vacuums the inside of the filter element 4 from the right end of the filter element 4, and the liquid in the filtrate is drawn into the inside of the filter element 4, and the solid particles in the filtrate are adsorbed on the outer surface of the filter element 4. As the filtrate is continuously added through the feed port 2, the liquid in the filtrate is continuously sucked into the inside of the filter element 4 and discharged from the right end of the filter element 4, and the solid particles in the filtrate are continuously adsorbed on the outer surface of the filter element 4, so that the filtrate is continuously solidified. Liquid separation; when the outer surface of the filter element 4 adsorbs a set amount of solid particles, it is necessary to regularly remove the solid particles on the outer surface of the filter element 4; the operation method is as follows: stop adding filtrate to the filter cartridge, and the vacuum device continues to vacuum for a period of time so that the liquid in the filtrate in the cylinder 1 is fully extracted, and then the baffle assembly opens the discharge port 3. At this time, the vacuum device stops vacuuming, and the solid particles on the outer surface of the filter element 4 lose the force of adsorption on the outer surface of the filter element 4 and will fall from the outer surface of the filter element 4 into the cylinder 1 and be discharged from the discharge port 3. At this time, the driving device continues to drive the filter element 4 to revolve and rotate, which helps the solid particles on the outer surface of the filter element 4 to fall off.

[0034] The discharge cycle of solid particles can be determined based on usage experience. Different solid particle components and liquid components have different cycles. It can also be determined by testing the pressure outside the filter element 4 and the pressure inside the filter element 4. The pressure difference between the pressure outside the filter element 4 and the pressure inside the filter element 4 can reflect the adsorption amount of solid particles on the outer surface of the filter element 4. The larger the pressure difference, the more solid particles are adsorbed on the outer surface of the filter element 4. The smaller the pressure difference, the fewer solid particles are adsorbed on the outer surface of the filter element 4. When in use, when the pressure difference reaches the set value, the solid particles on the outer surface of the filter element 4 need to be discharged; the pressure on the outer surface of the filter element 4 is the pressure inside the cylinder 1, and a pressure gauge can be installed on the cylinder 1. The pressure inside the filter element 4 is the vacuum pressure, and the difference between the two pressure values ​​is the pressure difference.

[0035] In order to achieve the purpose of faster discharge of solid particles outside the filter element 4, in this embodiment, a compressed air system is provided on the left side of the cylinder 1, and the compressed air system is used to blow compressed air into the interior of the filter element 4 when discharging solid particulate materials, so that the solid particles on the outer surface of the filter element 4 fall off more quickly and easily, and the filter element 4 is also backwashed at the same time; during normal use, although the solid particles on the outer surface of the filter element 4 can be fallen off, after long-term use, the filter holes of the filter element 4 will be clogged with more solid particles, affecting the filtering performance of the filter element 4, and by blowing compressed air from the left end of the filter element 4 into the filter element 4 through the compressed air system, a backwashing of the filter element 4 can be achieved, which helps to remove the solid particles on the outer surface of the filter element 4 while blowing out the solid particles clogged in the filter holes of the filter element 4; making the use of the filter element 4 more efficient and improving the separation efficiency during solid-liquid separation.

[0036] In this embodiment, the left and right sides inside the cylinder 1 are rotatably connected with a left end plate 5 and a right end plate 6 respectively, and each filter element 4 is rotatably connected with the left end plate 5 and the right end plate 6. When the driving device drives the filter element 4 to rotate around the axis of the cylinder 1, the left end plate 5 and the right end plate 6 rotate synchronously. At the same time, when the filter element 4 rotates around its own axis, the filter element 4 rotates inside the left end plate 5 and the right end plate 6.

[0037] In this embodiment, a one-way valve is provided at the left end of each filter element 4, and the output end of the compressed air system is connected to the left end of the filter element 4. When the solid particles on the outer surface of the filter element 4 need to be discharged, the vacuum device stops vacuuming, the baffle assembly opens the discharge port 3, and the compressed air system opens the compressed air to push open the one-way valve of each filter element 4 and enter the interior of each filter element 4, so that the compressed air blows the inside of each filter element 4, causing the solid particles on the outer surface of the filter element 4 to fall off, and at the same time, the filter element 4 is backwashed by air.

[0038] In this embodiment, an air pipe 7 is arranged inside each filter element 4 along the left-right direction, the right end of the air pipe 7 is connected to the output end of the vacuum pump, the left end of the air pipe 7 is connected to the output end of the compressed air system, and a plurality of blowing holes 8 are opened on the outer surface of the air pipe 7 along the left-right direction; the left end of the air pipe 7 is rotatably connected to the left end of the corresponding filter element 4.

[0039] In this embodiment, the blowing hole 8 is arranged in a set fan-shaped area of ​​the cross-sectional area of ​​the air pipe 7, and a centering hammer 9 is fixedly connected to the left part of the air pipe 7. The center of gravity of the centering hammer 9 is arranged corresponding to the fan-shaped area of ​​the air pipe 7 where the blowing hole 8 is located. When the filter element 4 revolves around the axis of the cylinder 1, the center of gravity of the centering hammer 9 keeps the blowing hole 8 of the air pipe 7 always facing downward. When the fixed particles on the outer surface of the filter element 4 need to be discharged, the compressed air system is turned on, and the compressed air pushes open the one-way valve to blow air into the air pipe 7, and then blows out from the blowing hole 8 of the air pipe 7, so that the compressed air is blown downward in the filter element 4 to blow off the fixed particles on the outer surface of the filter element 4. Since the filter element 4 is rotating all the time, the entire circumferential surface of the outer surface of the filter element 4 can be blown by the compressed air.

[0040] In this embodiment, a vertical hole 10 is formed on the inner side surface of the centering hammer 9 along the up-down direction, a flexible rod 11 is arranged in the vertical hole 10, a reset spring 12 is fixedly arranged between the upper end surface of the flexible rod 11 and the inner top wall of the vertical hole 10, the reset spring 12 pulls the flexible rod 11 upward into the vertical hole 10, so that the outer end of the flexible rod 11 does not contact the inner side wall of the filter element 4, and a through hole 13 is formed on the inner top wall of the vertical hole 10; an oscillation chamber 14 is formed inside the centering hammer 9, and a plurality of rollers 15 are arranged in the oscillation chamber 14; an arc-shaped shell 16 fixedly arranged with the cylinder 1 is provided on the outer side surface of the left end plate 5, The axis of the arc-shaped shell 16 coincides with the axis of the cylinder 1, and the arc-shaped shell 16 is arranged at the lower part of the left end plate 5; the outer surface of the arc-shaped shell 16 is fixedly provided with an air inlet pipe 17 connected with the inside of the arc-shaped shell 16, and the air inlet pipe 17 is connected with the air outlet end of the compressed air system; when it is necessary to discharge the solid particles on the outer surface of the filter element 4, the vacuum device stops after fully extracting the liquid in the filtrate in the cylinder 1, and then the feed port 2 stops feeding, the compressed air system is turned on, and the compressed air enters the inside of the arc-shaped shell 16 through the air inlet pipe 17 and waits for the filter element 4 to revolve. The left end of the filter element 4 enters the interior of the arc-shaped housing 16. At the same time, the compressed air inside the arc-shaped housing 16 pushes open the one-way valve at the left end of the filter element 4 inside the arc-shaped housing 16 and enters the corresponding air pipe 7, and blows downward on the inner wall of the filter element 4 through the blowing hole 8 of the air pipe 7, so that the solid particles on the outer surface of the filter element 4 fall off. At the same time, the compressed air enters the vertical hole 10 through the through hole 13 to push the flexible rod 11 to move downward, so that the outer end of the flexible rod 11 extends out of the vertical hole 10 and contacts the inner wall of the filter element 4, so that when the filter element 4 rotates, the centering hammer 9 is driven to rotate through the flexible rod 11, and the centering hammer 9 rotates. Drive the air pipe 7 to rotate; when the filter element 4 revolves and detaches from the interior of the arc-shaped shell 16, the one-way valve at the left end of the filter element 4 is no longer subjected to the pressure of the compressed air, the one-way valve is closed, and the top end of the flexible rod 11 loses the thrust of the compressed air and retracts into the vertical hole 10 under the pulling force of the return spring 12, and the centering hammer 9 drives the air pipe 7 to rotate under the action of gravity, so that the blowing hole 8 of the air pipe 7 faces downward; during the rotation of the centering hammer 9, the rollers 15 in the vibration chamber 14 of the centering hammer 9 collide with each other to generate vibration, thereby causing the filter element 4 to vibrate. When the filter element 4 vibrates, the solid particles on the outer surface of the filter element 4 are more likely to fall off.

[0041] In this embodiment, the one-way valve includes a valve disc 18 fixedly arranged on the left side of the inner wall of the air pipe 7, a plurality of valve holes 19 are opened on the left side of the valve disc 18 along the left and right directions, a valve stem 20 is coaxially arranged inside the valve disc 18, a valve plate 21 is fixedly arranged on the left end of the valve stem 20, the valve stem 20 is slidably arranged in the valve disc 18 along the left and right directions, a compression spring 22 is sleeved on the valve stem 20 between the valve plate 21 and the valve disc 18, and an air hole 23 is opened on the left end of the air pipe 7. Under normal conditions, the compression spring 22 pushes the valve plate 21 to move to the left to seal the air hole 23; when the filter element 4 revolves into the arc-shaped housing 16, the compressed air in the arc-shaped housing 16 pushes the valve plate 21 to overcome the compression spring The force of the spring 22 moves to the right, causing the air hole 23 to open, and the compressed air enters from the air hole 23, then enters the air pipe 7 through the valve hole 19 of the valve disc 18, and then is ejected from the blowing hole 8 of the air pipe 7 to blow the inner wall of the filter element 4. At the same time, it enters the vertical hole 10 through the through hole 13 to push the flexible rod 11 outward, so that the outer end of the flexible rod 11 contacts the inner top wall of the filter element 4, so that when the filter element 4 rotates, the centering hammer 9 is driven to rotate through the flexible rod 11, and then the air pipe 7 is driven to rotate, the centering hammer 9 is driven to rotate, and the rollers 15 in the vibration chamber 14 inside the centering hammer 9 collide with each other to generate vibration, thereby causing the filter element 4 to vibrate and shake off the solid particles on the outer surface of the filter element 4.

[0042] In this embodiment, the baffle assembly includes an arc-shaped hydraulic telescopic rod 24 fixedly arranged on the inner wall of the cylinder 1, and the output end of the arc-shaped hydraulic telescopic rod 24 is fixedly arranged on the baffle 25. The arc-shaped hydraulic telescopic rod 24 is extended and retracted to drive the baffle 25 to move along the curvature of the inner wall of the cylinder 1, thereby achieving the purpose of opening and closing the discharge port 3.

[0043] In this embodiment, the driving device includes a planetary gear assembly and a motor 26. The output end of the motor 26 drives the planetary gear assembly to rotate, and the planetary gear assembly drives each filter element 4 to orbit and rotate.

[0044] In this embodiment, the planetary gear assembly includes a ring gear 27 fixedly arranged at the right end of the cylinder 1, and a plurality of planetary gears 28 meshing with the ring gear 27, each planetary gear 28 is rotatably connected to the planetary carrier 29, and the motor 26 drives the planetary carrier 29 to rotate around its own geometric center. The right end of each filter element 4 passes through the right end plate 6 and is fixedly arranged with the corresponding planetary gear 28. The right side of the right end plate 6 is coaxially provided with a central gear 30, which is rotatably connected to the right end plate 6, and the central gear 30 is meshed with each planetary gear 28; the motor 26 drives the planetary carrier 29 to rotate around its own geometric center. When the geometric center of the cylinder body rotates, each planetary gear 28 is driven to revolve around the axis of the cylinder body 1, and then each filter element 4 is driven to revolve around the axis of the cylinder body 1, so as to achieve the purpose of the filter element 4 revolving. When the filter element 4 revolves, the left end plate 5 and the right end plate 6 both rotate; when each planetary gear 28 revolves, since they are all meshed with the ring gear 27, the planetary gear 28 revolves and rotates around its own axis at the same time. When each planetary gear 28 rotates, it drives the central gear 30 to rotate. When each planetary gear 28 rotates, it drives the filter element 4 to revolve and rotate at the same time, so as to achieve the purpose of driving the filter element 4 to revolve and rotate.

[0045] In order to achieve the purpose of vacuuming the interior of the filter element 4, in this embodiment, the planetary frame 29 is composed of a plurality of legs 31 and a main shaft 32. The planetary frame 29 is a hollow structure. The legs 31 of the planetary frame 29 are rotatably connected to the corresponding planetary gears 28. The right end of the air pipe 7 is rotatably connected to the legs 31 of the planetary frame 29, and the right end of the air pipe 7 is connected to the inside of the legs 31 of the planetary frame 29. When the planetary frame 29 rotates, the main shaft 32 of the planetary frame 29 always rotates around its own axis, and the main shaft 32 of the planetary frame 29 is connected to the output end of the vacuum device through a rotary joint. When in use, add the feed into the cylinder 1 through the feed port 2 The motor 26 then drives the planetary frame 29 to rotate around the axis of the main shaft 32, and then drives each filter element 4 to revolve and rotate through the legs 31. At the same time, the vacuum device vacuums the interior of the planetary frame 29 through the rotary joint, and then vacuums the interior of the air pipe 7. The air pipe 7 forms a vacuum inside each filter element 4 through the blowing hole 8, so that the liquid in the filtrate in the cylinder 1 enters the interior of the filter element 4, then enters the air pipe 7, and then enters each leg 31 of the planetary frame 29, and then enters the main shaft 32. Then the liquid in the filtrate enters the vacuum device through the rotary joint, and then is discharged from the discharge end of the vacuum device. The filtrate is continuously added from the feed port 2, and the liquid in the filtrate is continuously discharged from the discharge end of the vacuum device, so as to achieve the purpose of continuous filtration of the filtrate; in the process of filtration, the solid particles in the filtrate are adsorbed on the outer surface of the filter element 4. When the outer surface of the filter element 4 adsorbs a set amount of fixed particles, the solid particles are discharged. The operation is as follows: stop adding filtrate from the feed port 2, and the vacuum device continues to extract for a set time, so that the liquid component in the filtrate in the cylinder 1 is fully extracted, and then stop the vacuum device, and then push the baffle 25 to open the discharge port 3 through the arc-shaped hydraulic telescopic rod 24, and the outer surface of the filter element 4 The solid particles lose the vacuum adsorption force and fall off from the outer surface of the filter element 4, and are discharged from the discharge port 3, so as to achieve the purpose of discharging the fixed particles on the outer surface of the filter element 4; after stopping the vacuum pumping device, the compressed air system is turned on, so that the compressed air enters the arc-shaped housing 16 from the air inlet pipe 17, and when the filter element 4 revolves and enters the interior of the arc-shaped housing 16, the compressed air pushes open the valve plate 21, enters the air pipe 7 from the valve hole 19 of the valve disc 18, and then blows out from the blowing hole 8 of the air pipe 7, blowing the compressed air on the inner side wall of the filter element 4, so that the fixed particles on the outer surface of the filter element 4 are easier to fall off, and the filter element 4 is backwashed at the same time;Compressed air enters the vertical hole 10 through the through hole 13 and pushes out the flexible rod 11, so that the outer end of the flexible rod 11 contacts the inner wall of the filter element 4. When the filter element 4 rotates, the flexible rod 11 drives the centering hammer 9 to rotate. When the filter element 4 orbits to the outside of the arc-shaped housing 16, the valve plate 21 closes the air hole 23, and the flexible rod 11 retracts into the vertical hole 10. The rotation of the filter element 4 no longer drives the centering hammer 9 to rotate. The centering hammer 9 drives the blowing hole 8 of the air pipe 7 downward under the action of gravity. During the rotation of the centering hammer 9, the roller 15 inside the centering hammer 9 produces an impact, causing the centering hammer 9 to vibrate, and then the filter element 4 to vibrate, making the solid particles on the outer surface of the filter element 4 easier to fall off; at the same time, it also achieves the purpose of compressed air entering the filter element 4 to blow materials only when the filter element 4 orbits to the lower part. ;

[0046] In this embodiment, the output shaft of the motor 26 is fixedly provided with a driving wheel 33, and the main shaft 32 of the planetary carrier 29 is always fixed with a driven wheel 34. The driving wheel 33 and the driven wheel 34 are connected by a synchronous belt 35. The right end of the main shaft 32 passes through the driven wheel 34 and protrudes from the right side surface of the driven wheel 34, so as to be connected with the vacuum main shaft 32 through a rotating joint.

[0047] In this embodiment, an outer cylinder 36 is fixedly provided on the outer surface of the cylinder body 1, the outer surface of the ring gear 27 is fixedly provided to the inner wall of the outer cylinder 36, a bracket 37 is fixedly provided on the outer surface of the outer cylinder 36, and the outer cylinder 36 is placed on the ground through the bracket 37; the air pipe 7 is fixedly provided to the bracket 37 through the cross plate 38.

[0048] The working principle of the present invention is as follows: when in use, filtrate is added into the cylinder 1 through the feed port 2, and then the motor 26 drives the planetary frame 29 to rotate around the axis of the main shaft 32, and then drives each filter element 4 to orbit and rotate through the support legs 31. At the same time, the vacuum device vacuums the interior of the planetary frame 29 through the rotary joint, and then vacuums the interior of the air pipe 7. The air pipe 7 forms a vacuum inside each filter element 4 through the blowing hole 8, so that the liquid in the filtrate in the cylinder 1 enters the interior of the filter element 4, then enters the air pipe 7, then enters each support leg 31 of the planetary frame 29, and then enters the main shaft 32. Then, the liquid component in the filtrate enters the vacuum device through the rotary joint, and then is discharged from the discharge end of the vacuum device. The filtrate is continuously added from the feed port 2, and the liquid in the filtrate is continuously discharged from the discharge end of the vacuum device, so as to achieve the purpose of continuous filtration of the filtrate; in the process of filtration, the solid particles in the filtrate are adsorbed on the outer surface of the filter element 4. When the outer surface of the filter element 4 adsorbs a set amount of fixed particles, the solid particles are discharged. The operation is as follows: stop adding filtrate from the feed port 2, and the vacuum device continues to extract for a set time, so that the liquid component in the filtrate in the cylinder 1 is fully extracted, and then stop the vacuum device, and then push the baffle 25 through the arc-shaped hydraulic telescopic rod 24 to drive the discharge port 3, and the solid particles on the outer surface of the filter element 4 lose the vacuum adsorption force and fall off from the outer surface of the filter element 4, and are discharged from the discharge port 3. After the vacuum device is stopped, the compressed air system is turned on, so that the compressed air enters the arc-shaped housing 16 from the air inlet pipe 17. When the filter element 4 revolves and enters the interior of the arc-shaped housing 16, the compressed air pushes open the valve plate 21, enters the air pipe 7 from the valve hole 19 of the valve disc 18, and then blows out from the blowing hole 8 of the air pipe 7, blowing the compressed air on the inner wall of the filter element 4, making it easier for the fixed particles on the outer surface of the filter element 4 to fall off, and at the same time backwashing the filter element 4; the compressed air enters the vertical hole 10 through the through hole 13 to push out the flexible rod 11, so that the outer end of the flexible rod 11 conflicts with the inner wall of the filter element 4, and the filter element 4 rotates through the flexible rod 11 1 drives the centering hammer 9 to rotate. When the filter element 4 orbits to the outside of the arc-shaped housing 16, the valve plate 21 closes the air hole 23, and the flexible rod 11 retracts into the vertical hole 10. The rotation of the filter element 4 no longer drives the centering hammer 9 to rotate. Under the action of gravity, the centering hammer 9 drives the blowing hole 8 of the air pipe 7 downward. During the rotation of the centering hammer 9, the roller 15 inside the centering hammer 9 produces collision, causing the centering hammer 9 to vibrate, and then the filter element 4 to vibrate, making it easier for solid particles on the outer surface of the filter element 4 to fall off; at the same time, it also achieves the purpose of compressed air entering the filter element 4 to blow the material only when the filter element 4 orbits to the lower part; the filter element 4 is only blown and discharged with compressed air when it rotates to the discharge port 3, reducing the dust diffusion in the filter tank.

Claims

1. A backwash solid-liquid separation device, comprising a horizontally arranged cylinder (1), characterized in that: A feed port (2) is arranged above the outer surface of the cylinder (1), a discharge port (3) is arranged below the outer surface of the cylinder (1), a plurality of filter elements (4) are arranged inside the cylinder (1) along the left-right direction, the filter elements (4) are evenly arranged along the circumferential direction of the cylinder (1), a driving device is arranged on the right side of the cylinder (1), the driving device is used to drive each filter element (4) to rotate around the axis of the cylinder (1) and around the axis of the filter element (4); a vacuum device is arranged on the right side of the cylinder (1), the vacuum device is used to vacuum from the right end of the filter element (4), so that a vacuum is formed inside the filter element (4), and a baffle assembly is arranged inside the cylinder (1), the baffle assembly is used to close and open the discharge port (3); A compressed air system is provided on the left side of the cylinder (1), and the compressed air system is used to blow compressed air into the interior of the filter element (4) when discharging solid particulate material; The left and right sides of the cylinder (1) are rotatably connected to a left end plate (5) and a right end plate (6), respectively, and each filter element (4) is rotatably connected to the left end plate (5) and the right end plate (6); A one-way valve is provided at the left end of each filter element (4), and the output end of the compressed air system is connected to the left end of the filter element (4); Each filter element (4) is provided with an air pipe (7) in the left-right direction, the right end of the air pipe (7) is connected to the output end of the vacuum device, the left end of the air pipe (7) is connected to the output end of the compressed air system, and the outer surface of the air pipe (7) is provided with a plurality of blowing holes (8) in the left-right direction; the left end of the air pipe (7) is rotatably connected to the left end of the corresponding filter element (4); The blowing hole (8) is arranged in a set sector-shaped area of ​​the cross-sectional area of ​​the air pipe (7), a centering hammer (9) is fixedly connected to the left part of the air pipe (7), and the center of gravity of the centering hammer (9) is arranged corresponding to the sector-shaped area of ​​the air pipe (7) where the blowing hole (8) is located; The inner side surface of the centering hammer (9) is provided with a vertical hole (10) along the up-down direction, a flexible rod (11) is arranged in the vertical hole (10), a return spring (12) is fixedly arranged between the upper end surface of the flexible rod (11) and the inner top wall of the vertical hole (10), and a through hole (13) is provided in the inner top wall of the vertical hole (10); an oscillation chamber (14) is provided inside the centering hammer (9), and a plurality of rollers (15) are arranged in the oscillation chamber (14); an arc-shaped shell (16) fixedly arranged with the cylinder (1) is provided on the outer side surface of the left end plate (5), the axis of the arc-shaped shell (16) coincides with the axis of the cylinder (1), and the arc-shaped shell (16) is arranged at the lower part of the left end plate (5); an air inlet pipe (17) connected with the inside of the arc-shaped shell (16) is fixedly arranged on the outer surface of the arc-shaped shell (16), and the air inlet pipe (17) is connected with the air outlet end of the compressed air system; The driving device comprises a planetary gear assembly and a motor (26); the output end of the motor (26) drives the planetary gear assembly to rotate, and the planetary gear assembly drives each filter element (4) to revolve and rotate; the planetary gear assembly comprises a gear ring (27) fixedly arranged on the right end of the cylinder (1), and a plurality of planetary gears (28) meshing with the gear ring (27); each planetary gear (28) is rotationally connected to a planetary carrier (29); the motor (26) drives the planetary carrier (29) to rotate around its own geometric center; the right end of each filter element (4) passes through the right end plate (6) and is fixedly arranged with the corresponding planetary gear (28); a central gear (30) is coaxially arranged on the right side surface of the right end plate (6); the central gear (30) is rotationally connected to the right end plate (6), and the central gear (30) is meshed with each planetary gear (28).

2. The backwash solid-liquid separation device according to claim 1, characterized in that: The baffle assembly comprises an arc-shaped hydraulic telescopic rod (24) fixedly arranged on the inner side wall of the cylinder (1), and the output end of the arc-shaped hydraulic telescopic rod (24) is fixedly arranged on the baffle (25).

3. The backwash solid-liquid separation device according to claim 1, characterized in that: The planetary frame (29) is composed of a plurality of legs (31) and a main shaft (32). The planetary frame (29) is a hollow structure. The legs (31) of the planetary frame (29) are all rotatably connected to the corresponding planetary gears (28). The right end of the air pipe (7) is rotatably connected to the legs (31) of the planetary frame (29). The right end of the air pipe (7) is connected to the inside of the legs (31) of the planetary frame (29). The main shaft (32) of the planetary frame (29) is connected to the output end of the vacuum pump via a rotary joint.

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