Compression upper discharge device and centrifuge for light material vertical centrifuge

Abstract

The present invention relates to a compression upper discharge device for a vertical centrifuge for light materials and a centrifuge. By separating the supporting plate from the liquid blocking plate to shorten the rising distance of the liquid blocking plate during the unloading process, the outer height of the unloading bin can be reduced, the material cost of the unloading bin can be reduced, and the internal space of the unloading bin can be reduced. This solves the technical problem that the height of the liquid blocking plate is too large when the traditional upper discharge device rises to discharge, resulting in an increase in the setting height of the centrifuge feed pipe, thereby increasing the energy consumption of lifting the material during feeding. At the same time, the compression upper discharge device for a vertical centrifuge for light materials described in the present invention can compress the light material by utilizing the process of the supporting plate approaching the liquid blocking plate, thereby increasing the density of the light material, and then being able to be thrown outwards for a longer distance under the action of centrifugal force, so as to smoothly enter the unloading bin.

Description

Technical Field

[0001] The invention belongs to the technical field of centrifuges, and in particular relates to a compression upper discharging device for a light material vertical centrifuge and a centrifuge. Background Art

[0002] The main unloading methods of vertical centrifuges are top unloading and bottom unloading. The bottom unloading centrifuge has a simple structure and convenient unloading, but the unloading space needs to be reserved under the centrifuge. Therefore, the centrifuge is usually raised, which makes loading more difficult. The centrifuge is located at a high place, and the working stability and safety are reduced. The top unloading centrifuge unloads from the top of the centrifuge, so the centrifuge is directly fixed on the ground, the installation is stable, the working stability and safety are high, and the loading is convenient, the loading height is low, and the loading energy consumption is also low. However, when unloading, the material needs to be unloaded from the top of the centrifuge, which makes unloading more difficult. At present, the top unloading centrifuges mainly include hanging bag type or flip bag type. The hanging bag centrifuge needs to be used with a crane, and the filter bag has high load-bearing requirements, the filter bag replacement time is long, and the centrifuge production efficiency is low. The utility model with patent number ZL 2022228679511 discloses a "bottom-driven bag-turning mechanism for vertical bag-turning centrifuge". The centrifuge using this bag-turning mechanism can use the centrifuge's own bag-turning mechanism to push the material out of the drum and the casing for unloading, and there is no need to replace the filter bag, which reduces the difficulty of unloading and ensures the working efficiency of the centrifuge. Therefore, the bag-turning centrifuge is very popular among users among the top-discharging centrifuges.

[0003] However, the bag-turning centrifuge still has the following technical problems. For example, the "closed bag-turning unloading centrifuge" disclosed in the invention patent application with application number 2019114065451 has a high height of the lifting liquid blocking plate of the bag-turning mechanism, which causes the outer shell of the centrifuge (equivalent to the unloading bin of the present invention) to be made very high, resulting in an increase in the height of the feed pipe of the centrifuge and an increase in the energy consumption of lifting the mixed material.

[0004] Feathers, as lightweight materials, need to be dehydrated by centrifuge after washing to form feather filter cakes. Then the feather filter cakes need to be transported to the dryer through a pipeline for drying. Since the current centrifuges used for feather dehydration have diameters of 1800mm, 2000mm, and even 2300mm, they are large-cavity centrifuges. Therefore, when transporting the feather filter cakes (i.e., the unloading process), the current practice is that the operator climbs into the inner cavity of the centrifuge drum, grabs the hose with one hand, and grabs the feather filter cakes on the drum wall with the other hand, and continuously sends it to the inlet of the conveying hose, which uses negative pressure to suck the feathers out of the centrifuge.

[0005] The disadvantages of this operation are: 1. It is labor-intensive; 2. The down of the feathers will be inhaled into the human lungs, posing a threat to human health; 3. It is very easy to cause safety accidents. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a compression upper discharge device for a vertical centrifuge for light materials, so as to solve the technical problem that when the traditional upper discharge device rises to discharge materials, the height of the liquid blocking plate is too large, resulting in a high size of the centrifuge shell and a high position of the feed pipe, which increases the energy consumption of lifting the mixed material.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a compression upper discharge device for a vertical centrifuge of light materials, comprising a discharge rack arranged in a drum, a plurality of guide columns extending vertically upward and uniformly distributed on the inner bottom surface of the drum in a circumferential direction, a liquid blocking plate detachably connected to the top of the drum, and a lifting driver driving the discharge rack to rise and fall along the axial direction of the drum; the guide column extends out of the drum through the liquid blocking plate, the top of the guide column is connected to an upper fixed seat, the bottom surface of the liquid blocking plate is connected to a support rod extending downward, the length of the support rod is not greater than the distance from the bottom surface of the upper fixed seat to the top surface of the drum, and the bottom surface of the outer edge of the liquid blocking plate abuts against the top surface of the drum. It is connected to the annular top surface of the drum to prevent solid material from overflowing from the top of the drum during centrifugation; the unloading rack includes a supporting plate that is adapted to the shape of the inner flat bottom surface of the drum and a connecting piece for connecting the supporting plate and the lifting drive, the outer edge of the supporting plate is close to the inner wall of the drum, and guide holes corresponding to the guide columns are opened on the supporting plate. The supporting plate is lifted and lowered axially along the guide columns under the drive of the lifting drive. The length of the support rod is less than the depth of the drum. When the supporting plate is at the lower dead point, the supporting plate and the support rod are separated from each other. When the supporting plate rises, it gradually abuts against the lower end of the support rod and pushes the support rod to rise.

[0008] As a preferred solution, the support rods are sliding sleeves, and the support rods are slidingly sleeved on the guide columns in a one-to-one correspondence.

[0009] As a preferred solution, the lifting driver comprises a column fixedly connected to the center of the drum, a lifting sleeve slidably sleeved on the column, a support frame fixedly connected to the centrifuge, a discharge arm swingably connected to the support frame, and a piston cylinder driving the discharge arm to swing, wherein the column is coaxially arranged with the rotation center of the drum, and the column extends upward out of the drum; the support frame is located outside the drum, the discharge arm is arranged along the radial direction of the drum, one end of the discharge arm extends into the drum and is connected with a U-shaped bracket, the opening of the U-shaped bracket faces the lifting sleeve, the lifting sleeve is inserted into the groove of the U-shaped bracket, and two rollers are rotatably connected to the U-shaped bracket and are arranged coaxially. The lifting sleeve is connected with a top plate located above the two rollers, and the rollers roll and abut against the top plate when they rise; the other end of the discharge arm is connected to the push rod of the piston cylinder, and the connecting member is a cone cylinder, the top end of the cone cylinder is connected to the lower end of the lifting sleeve, the lower end of the cone cylinder is connected to the supporting plate, and the cone cylinder is coaxially arranged with the drum.

[0010] As a preferred solution, multiple upper fixed seats are rotatably connected to gravity hammers, and the gravity hammers are in the shape of long strips, whose length is greater than the maximum distance between the upper fixed seat and the liquid blocking plate. The free end of the gravity hammer is rotatably connected to a pressure wheel, and the pressure wheel abuts against the top surface of the liquid blocking plate under the action of the gravity hammer's own weight. The gravity hammer swings along the radial direction of the drum, and the free end of the gravity hammer is inclined toward the center of the drum.

[0011] As a preferred solution, the length of the support rod is half of the depth of the drum.

[0012] The present invention further aims to solve the technical problem of providing a centrifuge to solve the technical problem that when the centrifuge is used to separate a mixture of light solid materials and liquids, the light materials are loose, are less affected by centrifugal force, and are not easily thrown into the discharge bin.

[0013] In order to solve the above technical problems, the technical solution adopted by the present invention is: a centrifuge for separating a mixture of light solid materials and liquids, comprising a base, a shaft seat vertically connected to the base, a rotating shaft rotatably connected to the shaft seat and vertically arranged, a drum fixedly connected to the top of the rotating shaft, a shell fixedly connected to the base and surrounding the outside of the rotating drum, and a rotating driver fixedly connected to the base for driving the rotating shaft to rotate, and also includes the above-mentioned compression upper discharge device, a filtrate channel is provided between the shell and the drum, a discharge port connected to the filtrate channel is provided on the base, an annular cover plate is connected to the top of the shell, the inner edge of the cover plate is close to the outer wall of the top of the drum, the filter hole on the drum is located below the inner edge of the cover plate, and a feed pipe is provided above the drum, and the feed pipe extends horizontally from above the upper fixed seat to above the drum.

[0014] As a preferred solution, an annular unloading bin is fixedly connected to the outer wall of the outer shell, and the upper end of the unloading bin extends upward to the top of the outer shell. The inner wall of the unloading bin above the outer shell is provided with an annular bin opening. The guide column and the upper fixed seat above the drum are opposite to the bin opening. The bottom surface of the unloading bin is connected to a unloading pipe, which is connected to the inside of the unloading bin. The feed pipe extends horizontally from above the unloading bin to above the drum.

[0015] As a preferred solution, a plurality of circumferentially evenly distributed air ducts are connected to the outer wall of the unloading bin, and the end of each air duct away from the unloading bin extends upward in a clockwise direction or a counterclockwise direction. The end of the air duct away from the unloading bin is connected to an air source, and the air source supplies air to each air duct into the unloading bin and forms an oblique downward vortex in the unloading bin, driving the lightweight materials in the unloading bin to be discharged from the unloading pipe.

[0016] As a preferred solution, an inverted bucket-shaped positioning frame is connected to the top surface of the unloading bin, a bearing box is connected to the top of the positioning frame, a bearing is rotatably connected inside the bearing box, the bearing is coaxially arranged with the column, the top of the column is rotatably connected to the bearing, the lifting drive passes through the positioning frame and extends into the drum, and the feed pipe passes through the positioning frame and extends horizontally to above the drum.

[0017] As a preferred embodiment, the drum includes a drum bottom, a filter cartridge connected to the outer edge of the drum bottom, and an annular liquid blocking plate seat connected to the top of the filter cartridge. The inner wall of the liquid blocking plate seat is flush with the inner wall of the filter cartridge, and the outer wall extends radially outward to the outside of the filter cartridge. The inner edge of the cover plate is close to the outer wall of the top of the liquid blocking plate seat. The inner side wall of the liquid blocking plate seat is processed into a first step hole and a second step hole whose inner diameters decrease from top to bottom. Overflow holes are evenly distributed circumferentially on the inner wall of the second step hole. The bottom surface of the outer edge of the liquid blocking plate is provided with a step groove that cooperates with the first step hole and the second step hole. The outer edge of the liquid blocking plate overlaps the step surface on the inner side wall of the liquid blocking plate seat.

[0018] The beneficial effects of the present invention are as follows: the compression upper discharge device for a vertical centrifuge for light materials of the present invention can shorten the rising distance of the liquid blocking plate during the unloading process by separating the material support plate from the liquid blocking plate, thereby reducing the outer height of the unloading bin, reducing the material cost of the unloading bin, and reducing the height of the feed pipe, thereby solving the technical problem that the height of the liquid blocking plate is too large when the traditional upper discharge device rises to discharge, resulting in a high height of the feed pipe and increased energy consumption for lifting the material to the high point of the feed pipe. At the same time, the compression upper discharge device for a vertical centrifuge for light materials of the present invention can compress the light material by utilizing the process of the material support plate approaching the liquid blocking plate, thereby increasing the density of the light material, and then being able to be thrown outwards for a longer distance under the action of centrifugal force, thereby achieving rapid unloading.

[0019] The centrifuge of the present invention adopts the compression upper discharge device for the vertical centrifuge for light materials to reduce the material cost of the discharge bin, and at the same time reduces the height of the feed pipe and reduces the feed energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 It is a schematic structural diagram of the compression upper discharge device for the light material vertical centrifuge according to Example 1 of the present invention;

[0022] Figure 2 yes Figure 1 A magnified view of part A in FIG.

[0023] Figure 3 is a schematic structural diagram of the centrifuge described in Example 2 of the present invention;

[0024] Figure 4 yes Figure 3 A magnified view of part B in FIG.

[0025] Figure 1~Figure 4 Middle: 1. Drum; 101. Drum bottom; 102. Filter cartridge; 2. Discharge rack; 201. Support plate; 202. Connector; 3. Guide column; 4. Liquid blocking plate; 5. Lifting drive; 501. Column; 502. Lifting sleeve; 503. Support frame; 504. Discharge arm; 505. Piston cylinder; 506. U-shaped bracket; 507. Roller; 508. Top plate; 6. Upper fixed seat; 7. Support rod; 8. Guide hole; 9. Gravity hammer; 10. Pressing wheel; 1 1. Base; 12. Shaft seat; 13. Rotating shaft; 14. Casing; 15. Rotating drive; 16. Filtrate channel; 17. Drain port; 18. Cover plate; 19. Discharge bin; 20. Bin port; 21. Discharge pipe; 22. Air duct; 23. Air source; 24. Positioning frame; 25. Bearing box; 26. Bearing; 27. Liquid blocking plate seat; 28. First step hole; 29. ​​Second step hole; 30. Overflow hole; 31. Step groove; 32. Blade; 34. Feed pipe. DETAILED DESCRIPTION

[0026] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Example 1

[0027] like Figure 1 and Figure 2 The compression upper discharge device for a vertical centrifuge for light materials shown comprises a discharge rack 2 arranged in a drum 1, six guide posts 3 extending vertically upward and uniformly distributed on the inner bottom surface of the drum 1 in a circumferential direction, a liquid blocking plate 4 detachably connected to the top of the drum 1, and a lifting drive 5 for driving the discharge rack 2 to rise and fall axially along the drum 1.

[0028] Any guide column 3 passes through the liquid blocking plate 4 and extends out of the drum 1. The top of the guide column 3 is connected to an upper fixed seat 6 for limiting the rising height of the liquid blocking plate 4. The bottom surface of the liquid blocking plate 4 is connected to a downwardly extending support rod 7. The length of the support rod 7 is not greater than the distance from the bottom surface of the upper fixed seat 6 to the top surface of the drum 1. The bottom surface of the outer edge of the liquid blocking plate 4 abuts against the annular top surface of the drum 1 to prevent solid materials from overflowing from the top of the drum 1 during the centrifugation process.

[0029] The unloading rack 2 includes a supporting plate 201 adapted to the shape of the flat bottom surface of the drum 1 and a connecting piece 202 for connecting the supporting plate 201 and the lifting drive 5. The outer edge of the supporting plate 201 is close to the inner wall of the drum 1. The supporting plate 201 is provided with guide holes 8 corresponding to the guide columns 3. The supporting plate 201 is lifted and lowered axially along the guide columns 3 under the drive of the lifting drive 5. The length of the support rod 7 is less than the depth of the drum 1. When the supporting plate 201 is located at the lower dead point, the supporting plate 201 and the support rod 7 are separated from each other. When the supporting plate 201 rises, it first approaches the support rod 7 and the liquid blocking plate 4, and then abuts against the lower end of the support rod 7 and pushes the support rod 7 to rise. In this way, when the supporting plate 201 reaches the upper dead point, the rising stroke of the liquid blocking plate 4 is less than the rising stroke of the supporting plate 201.

[0030] The support rods 7 described in this embodiment are preferably sliding sleeves, and the support rods 7 are slidingly sleeved on the guide pillars 3 in a one-to-one correspondence.

[0031] Theoretically, the support rod 7 can also be set separately, as long as the support plate 201 can support the liquid blocking plate 4 through the support rod 7. However, a separately set support rod 7 will increase the obstruction to the material, which is not conducive to centrifugal operation. Using a sliding sleeve as the support rod 7 and sleeve the support rod 7 on the guide column 3 can reduce the obstruction to the material.

[0032] The lifting drive 5 includes a column 501 fixedly connected to the center of the drum, a lifting sleeve 502 slidably sleeved on the column 501, a support frame 503 fixedly connected to the centrifuge, a discharge arm 504 swingably connected to the support frame 503, and a piston cylinder 505 driving the discharge arm 504 to swing. The column 501 is coaxially arranged with the rotation center of the drum 1, and the column 501 extends upward out of the drum 1; the support frame 503 is located outside the drum 1, and the discharge arm 504 is arranged along the radial direction of the drum 1, one end of the discharge arm 504 extends into the drum 1 and is connected to a U-shaped bracket 506, and the opening of the U-shaped bracket 506 The opening faces the lifting sleeve 502, and the lifting sleeve 502 is inserted into the groove of the U-shaped bracket 506. The U-shaped bracket 506 is rotatably connected to two rollers 507 arranged on both sides of the lifting sleeve 502, and the two rollers 507 are coaxially arranged. The lifting sleeve 502 is connected to a top plate 508 located above the two rollers 507, and the rollers 507 roll and abut against the top plate 508 when rising; the other end of the unloading arm 504 is connected to the push rod of the piston cylinder 505, and the connecting piece 202 is a conical cylinder, the top end of the conical cylinder is connected to the lower end of the lifting sleeve 502, the lower end of the conical cylinder is connected to the supporting plate 201, and the conical cylinder is coaxially arranged with the rotating drum 1.

[0033] In practical applications, the lifting drive 5 may also adopt the lifting structure disclosed in the invention patent application with application number 2019114065451 and titled “Enclosed Bag Turning Discharge Centrifuge”. Or adopt the lifting structure disclosed in the utility model patent with patent number ZL202222867951.1 and titled “Bottom Driven Bag Turning Mechanism for Vertical Bag Turning Centrifuge”.

[0034] On the basis of the above technical solution, this embodiment is also preferably provided with a gravity hammer 9 rotatably connected to multiple upper fixed seats 6, wherein the gravity hammer 9 is in the shape of an elongated strip, and its length is greater than the maximum distance between the upper fixed seat 6 and the liquid blocking plate 4, and the free end of the gravity hammer 9 is rotatably connected to a pressure wheel 10, and the pressure wheel 10 abuts against the top surface of the liquid blocking plate 4 under the action of its own weight. The gravity hammer 9 swings along the radial direction of the drum 1, and the free end of the gravity hammer 9 is inclined toward the center side of the drum 1.

[0035] When the drum 1 rotates at high speed, the centrifugal force of the gravity hammer 9 will drive its lower end to press against the liquid blocking plate 4, thereby preventing the liquid blocking plate 4 from floating upward during the solid-liquid separation process. The function of the pressure wheel 10 is to facilitate the swing of the gravity hammer 9 when the liquid blocking plate 4 is raised or lowered.

[0036] In this embodiment, the length of the support rod 7 is set to half the depth of the drum 1. This can reduce the rising height of the liquid blocking plate 4 and ensure that the distance between the liquid blocking plate 4 and the top of the drum 1 after it rises to the top dead center meets the unloading requirements.

[0037] Of course, in actual applications, the user can adjust the height of the support rod 7 according to the characteristics of the material and the filter cake to achieve the best technical effect.

[0038] like Figure 1 As shown, in this embodiment, a plurality of blades 32 evenly distributed along the circumferential direction of the upper end surface of the drum 1 are preferably provided between the upper fixing seat 6 and the upper end surface of the drum 1. The blades 32 form an effect similar to that of a centrifugal fan when rotating with the drum 1, driving the gas inside the drum 1 to flow outward, which can promote the discharge of light materials from the inside of the drum 1 to the outside, and blow the light solid materials moving above the drum 1 to the outside of the drum 1, so that the materials fly outward farther, and the light solid materials in the drum 1 are discharged faster.

[0039] The working process of this embodiment is as follows: Figure 1 and Figure 2 As shown, when preparing for centrifugal operation, the push rod of the piston cylinder 505 extends, the supporting plate 201 is attached to the bottom surface of the drum 1, and the liquid blocking plate 4 abuts against the top surface of the drum 1 under the action of its own weight. The user injects the solid-liquid mixture into the drum 1, starts the centrifuge, and the centrifuge drives the drum 1 to start rotating, entering the centrifugal operation period.

[0040] Let's take feathers, a lightweight material, as an example. After the feathers are cleaned, the solid-liquid mixture is gradually separated during the centrifugal operation. Finally, the feathers are intercepted by the drum 1 and form a filter cake against the inner wall of the drum 1.

[0041] After completing the centrifugal operation, the user adjusts the rotation speed of the drum to the unloading speed, and at the same time controls the push rod of the piston cylinder 505 to contract, driving the unloading arm 504 to swing, and the unloading arm 504 drives the U-shaped bracket 506 to rise, thereby driving the lifting sleeve 502 to rise along the column 501, and the lifting sleeve 502 drives the supporting plate 201 to rise through the connecting piece 202, and the supporting plate 201 squeezes and scrapes the feathers upward from the lower edge of the inner wall of the drum 1 until the supporting plate 201 rises to abut against the lower end of the support rod 7, and then the supporting plate 201 continues to rise, and the support rod 7 and the liquid blocking plate 4 also rise synchronously. After the liquid blocking plate 4 rises, the feathers are pushed to the top of the drum 1. Since the feathers originally have a rotation speed, they have a certain centrifugal force. After leaving the drum 1, they are discharged out of the drum under the action of the centrifugal force.

[0042] Since the feathers between the liquid blocking plate 4 and the supporting plate 201 are squeezed by the supporting plate 201 when it rises, the density between the feathers increases, and the feathers are partially compressed, so that the feathers fly farther out of the drum under the action of centrifugal force, thereby improving the unloading effect.

[0043] During the centrifugal operation, the drum 1 drives the discharge rack 2, the guide column 3, the liquid blocking plate 4, and the column 501 and the lifting sleeve 502 of the lifting drive 5 to rotate synchronously. At this time, the roller 507 can be separated from the top plate 508, and the discharge rack 2 drops to contact with the bottom surface of the drum 1 under its own gravity.

[0044] It can be determined that this embodiment can effectively reduce the rising height of the liquid blocking plate 4 during the unloading process, thereby reducing the interference with the centrifuge feed pipe, thereby reducing the height of the feed pipe and reducing the feed energy consumption. Example 2

[0045] like Figure 3The centrifuge shown is used to separate a mixture of light solid materials and liquids, and the light solid materials include but are not limited to feathers, down, fibers, and husks. The centrifuge includes a base 11, a shaft seat 12 vertically connected to the base 11, and a rotating shaft 13 rotatably connected to the shaft seat 12 and vertically arranged. The two ends of the rotating shaft 13 extend out of the shaft seat 12 respectively. The top of the rotating shaft 13 is fixedly connected to the rotating drum 1. The lower end of the rotating shaft 13 is transmission-connected to a rotating driver 15 fixedly connected to the base 11. The rotating driver 15 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives the rotating drum 1 to rotate. The base 11 is fixedly connected to a shell 14 surrounding the outside of the rotating drum 1. It also includes the compression upper discharge device described in the above embodiment 1, wherein a filtrate channel 16 is provided between the shell 14 and the drum 1, a discharge port 17 connected to the filtrate channel 16 is provided on the base 11, and an annular cover plate 18 is connected to the top of the shell 14, and the inner edge of the cover plate 18 is close to the outer wall of the top of the drum 1 to prevent solid materials from entering the filtrate channel 16 when unloading from the top of the drum 1. The filter holes on the drum 1 are located below the inner edge of the cover plate 18 to ensure that the filtrate enters the filtrate channel 16. A feed pipe 34 is provided above the drum 1.

[0046] Since the compression upper discharge device described in the above embodiment 1 is provided, the light material can be thrown out of the drum 1 after being compressed, thereby increasing the distance the material is thrown out and improving the discharge effect. At the same time, since the rising height of the liquid blocking plate 4 during the discharge process is reduced, the setting height of the feed pipe 34 is reduced, thereby reducing the energy consumption when the mixed material is transported into the centrifuge drum 1.

[0047] In this embodiment, an annular discharge bin 19 is fixedly connected to the outer wall of the outer shell 14, the bottom surface of the discharge bin 19 is located in the middle and upper part of the outer shell 14, and the upper end of the discharge bin 19 extends upward to the top of the outer shell 14. The inner wall of the discharge bin 19 located above the outer shell 14 is provided with an annular bin opening 20, and the guide column 3 and the upper fixed seat 6 located above the rotating drum 1 are opposite to the bin opening 20. The bottom surface of the discharge bin 19 is connected to a discharge pipe 21, and the discharge pipe 21 is connected to the inside of the discharge bin 19.

[0048] Since the compression upper discharge device described in the above embodiment 1 is adopted, the rising stroke of the liquid blocking plate 4 is shortened during the unloading process, so that the height of the unloading bin 19 can be lowered, and the material used in the unloading bin 19 can be reduced. At the same time, the bin opening 20 is reduced. Under the premise of using the same negative pressure to absorb feathers, a smaller bin opening 20 can provide a greater adsorption effect, thereby improving the unloading effect.

[0049] Of course, in order to avoid interference, the feed pipe 34 is arranged above the discharge bin 19.

[0050] In this embodiment, the upper edge of the bin opening 20 of the discharge bin 19 extends toward the center of the drum 1 to above the column 501. In actual application, the upper edge of the bin opening 20 of the discharge bin 19 partially overlaps with the liquid blocking plate 4 to prevent the material from flying out of the discharge bin 19 upwards.

[0051] In this embodiment, a plurality of circumferentially uniformly distributed air ducts 22 are preferably connected to the outer wall of the discharge bin 19, and one end of each air duct 22 away from the discharge bin 19 extends upward in a clockwise direction. One end of the air duct 22 away from the discharge bin 19 is connected to a wind source 23, and the wind source 23 supplies air to each air duct 22 into the discharge bin 19 and forms a downward oblique vortex in the discharge bin 19, driving the light material in the discharge bin 19 to be discharged from the discharge pipe 21. The wind source 23 can be a fan or an air supply duct. The position where the air duct 22 is connected to the discharge bin 19 is located below the cover plate 18 to prevent the vortex from being formed above the drum 1 and causing material reflux.

[0052] In this embodiment, an inverted bucket-shaped positioning frame 24 is further connected to the top surface of the discharge bin 19, a bearing box 25 is connected to the top of the positioning frame 24, a bearing 26 is rotatably connected in the bearing box 25, the bearing 26 is coaxially arranged with the column 501, the top of the column 501 is rotatably connected to the bearing 26, and the lifting drive 5 passes through the positioning frame 24 and extends into the drum 1. The feed pipe 34 passes through the positioning frame 24 and extends to the top of the drum 1.

[0053] The arrangement of the positioning frame 24 , the bearing box 25 and the bearing 26 improves the rotation stability of the column 501 .

[0054] In this embodiment, the drum 1 includes a drum bottom 101, a filter cartridge 102 connected to the outer edge of the drum bottom 101, and an annular liquid blocking plate seat 27 connected to the top of the filter cartridge. The inner wall of the liquid blocking plate seat 27 is flush with the inner wall of the filter cartridge 102, and the outer wall extends radially outward to the outside of the filter cartridge 102. The inner edge of the cover plate 18 is close to the outer wall of the top of the liquid blocking plate seat 27. The inner side wall of the liquid blocking plate seat 27 is processed into a first step hole 28 and a second step hole 29 whose inner diameters decrease from top to bottom. Overflow holes 30 are evenly distributed circumferentially on the inner wall of the second step hole 29. The outer edge bottom surface of the liquid blocking plate 4 is provided with a step groove 31 that cooperates with the first step hole 28 and the second step hole 29. The outer edge of the liquid blocking plate 4 overlaps the step surface on the inner side wall of the liquid blocking plate seat 27.

[0055] The first step hole 28 and the second step hole 29 on the liquid blocking plate seat 27 cooperate with the step groove 31 on the outer edge of the liquid blocking plate 4 to improve the sealing effect between the liquid blocking plate 4 and the top of the drum 1, and the overflow hole 30 can avoid the risk of water accumulating on the step surface and lifting the liquid blocking plate 4.

[0056] The centrifugal and upper discharging working process of this embodiment can refer to the working process of the compression upper discharging device for a vertical centrifuge for light materials in Example 1.

[0057] The unloading process of the unloading bin 19 described in this embodiment is: use the wind source 23 to input air flow into the air duct 22, and the air flow forms a spiral downward flow after entering the unloading bin 19. The vortex drives the material to move toward the unloading pipe 21 and finally discharged from the unloading bin 19 through the unloading pipe 21.

[0058] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A compression upper discharge device for a light material vertical centrifuge, characterized in that: It comprises a discharge rack (2) arranged in a rotating drum (1), a plurality of guide columns (3) uniformly distributed in the circumferential direction on the inner bottom surface of the rotating drum (1) and extending vertically upward, a liquid blocking plate (4) detachably connected to the top of the rotating drum (1), and a lifting drive (5) for driving the discharge rack (2) to rise and fall along the axial direction of the rotating drum (1); The guide column (3) passes through the liquid blocking plate (4) and extends out of the drum (1); the top of the guide column (3) is connected to an upper fixed seat (6); the bottom surface of the liquid blocking plate (4) is connected to a support rod (7) extending downward; the length of the support rod (7) is not greater than the distance from the bottom surface of the upper fixed seat (6) to the top surface of the drum (1); the bottom surface of the outer edge of the liquid blocking plate (4) abuts against the annular top surface of the drum (1) to prevent solid materials from overflowing from the top of the drum (1) during the centrifugation process; The unloading frame (2) comprises a supporting plate (201) adapted to the shape of the inner flat bottom surface of the rotating drum (1) and a connecting piece (202) for connecting the supporting plate (201) and the lifting drive (5); the outer edge of the supporting plate (201) is close to the inner wall of the rotating drum (1); the supporting plate (201) is provided with guide holes (8) corresponding to the guide columns (3); the supporting plate (201) is lifted and lowered axially along the guide columns (3) under the drive of the lifting drive (5); the length of the support rod (7) is less than the depth of the rotating drum (1); when the supporting plate (201) is at the lower dead point, the supporting plate (201) and the support rod (7) are separated from each other; when the supporting plate (201) rises, it gradually abuts against the lower end of the support rod (7) and pushes the support rod (7) to rise; The rotary drum (1) comprises a rotary drum bottom (101), a filter cartridge (102) connected to the outer edge of the rotary drum bottom (101), and an annular liquid blocking plate seat (27) connected to the top of the filter cartridge; the inner wall of the liquid blocking plate seat (27) is flush with the inner wall of the filter cartridge (102), and the outer wall extends radially outward to the outside of the filter cartridge (102); the inner side wall of the liquid blocking plate seat (27) is processed into a first step hole (28) and a second step hole (29) whose inner diameters decrease from top to bottom; the outer edge bottom surface of the liquid blocking plate (4) is provided with a step groove (31) that cooperates with the first step hole (28) and the second step hole (29); and the outer edge of the liquid blocking plate (4) overlaps the step surface on the inner side wall of the liquid blocking plate seat (27).

2. The compression upper discharge device for a light material vertical centrifuge according to claim 1, characterized in that: The support rods (7) are sliding sleeves, and the support rods (7) are slidingly sleeved on the guide pillars (3) in a one-to-one correspondence.

3. The compression upper discharge device for a light material vertical centrifuge according to claim 1, characterized in that: The lifting drive (5) comprises a column (501) fixedly connected to the center of the drum, a lifting sleeve (502) slidably sleeved on the column (501), a support frame (503) fixedly connected to the centrifuge, a discharge arm (504) swingably connected to the support frame (503), and a piston cylinder (505) for driving the discharge arm (504) to swing, the column (501) being coaxially arranged with the rotation center of the drum (1), and the column (501) extending upwardly out of the drum (1); The support frame (503) is located outside the rotating drum (1), and the discharge arm (504) is arranged along the radial direction of the rotating drum (1). One end of the discharge arm (504) extends into the rotating drum (1) and is connected to a U-shaped bracket (506). The opening of the U-shaped bracket (506) faces the lifting sleeve (502). The lifting sleeve (502) is inserted into the groove of the U-shaped bracket (506). The U-shaped bracket (506) is rotatably connected to two rollers (507) respectively arranged on both sides of the lifting sleeve (502). The two rollers are The wheels (507) are coaxially arranged; the lifting sleeve (502) is connected to a top plate (508) located above the two rollers (507); when the rollers (507) rise, they roll and abut against the top plate (508); the other end of the discharge arm (504) is connected to the push rod of the piston cylinder (505); the connecting member (202) is a cone; the top end of the cone is connected to the lower end of the lifting sleeve (502); the lower end of the cone is connected to the supporting plate (201); and the cone is coaxially arranged with the rotating drum (1).

4. The compression upper discharge device for a light material vertical centrifuge according to claim 1, characterized in that: A plurality of upper fixed seats (6) are rotatably connected to gravity hammers (9), the gravity hammers (9) being in the shape of elongated strips, the length of which is greater than the maximum distance between the upper fixed seats (6) and the liquid blocking plate (4), the free ends of the gravity hammers (9) being rotatably connected to a pressure wheel (10), the pressure wheel (10) being in contact with the top surface of the liquid blocking plate (4) under the action of the gravity hammers (9), the gravity hammers (9) swinging in the radial direction of the rotating drum (1), the free ends of the gravity hammers (9) being inclined toward the center of the rotating drum (1).

5. The compression upper discharge device for a light material vertical centrifuge according to claim 1, characterized in that: The length of the support rod (7) is half the depth of the drum (1).

6. A centrifuge for separating a mixture of light solid material and liquid, comprising a base (11), a shaft seat (12) vertically connected to the base (11), a rotating shaft (13) rotatably connected to the shaft seat (12) and vertically arranged, a rotating drum (1) fixedly connected to the top of the rotating shaft (13), a housing (14) fixedly connected to the base (11) and surrounding the outside of the rotating drum (1), and a rotating driver (15) fixedly connected to the base (11) for driving the rotating shaft (13) to rotate, characterized in that: It also includes a compression upper discharge device as described in any one of claims 1 to 5, wherein a filtrate channel (16) is provided between the outer shell (14) and the drum (1), a discharge port (17) connected to the filtrate channel (16) is provided on the base (11), an annular cover plate (18) is connected to the top of the outer shell (14), the inner edge of the cover plate (18) is close to the outer wall of the top of the drum (1), the filter hole on the drum (1) is located below the inner edge of the cover plate (18), and a feed pipe (34) is provided above the drum (1), and the feed pipe (34) extends horizontally from above the upper fixed seat (6) to above the drum (1).

7. The centrifuge according to claim 6, characterized in that An annular discharge bin (19) is fixedly connected to the outer wall of the outer shell (14), the upper end of the discharge bin (19) extends upward to the upper part of the outer shell (14), an annular bin opening (20) is provided on the inner side wall of the discharge bin (19) located above the outer shell (14), the guide column (3) and the upper fixed seat (6) located above the rotating drum (1) are both opposite to the bin opening (20), the bottom surface of the discharge bin (19) is connected to a discharge pipe (21), the discharge pipe (21) is communicated with the inside of the discharge bin (19), and the feed pipe (34) extends horizontally from the upper part of the discharge bin (19) to the upper part of the rotating drum (1).

8. The centrifuge according to claim 7, characterized in that A plurality of circumferentially evenly distributed air ducts (22) are connected to the outer wall of the discharge bin (19), and one end of each air duct (22) away from the discharge bin (19) extends upwardly and obliquely in a clockwise direction or in a counterclockwise direction. One end of the air duct (22) away from the discharge bin (19) is connected to an air source (23). The air source (23) supplies air to each air duct (22) into the discharge bin (19) and forms an oblique downward vortex in the discharge bin (19), thereby driving the lightweight materials in the discharge bin (19) to be discharged from the discharge pipe (21).

9. The centrifuge according to claim 8, characterized in that An inverted bucket-shaped positioning frame (24) is connected to the top surface of the unloading bin (19); a bearing box (25) is connected to the top of the positioning frame (24); a bearing (26) is rotatably connected inside the bearing box (25); the bearing (26) is coaxially arranged with the column (501); the top of the column (501) is rotatably connected to the bearing (26); the lifting drive (5) passes through the positioning frame (24) and extends into the drum (1); and the feed pipe (34) passes through the positioning frame (24) and extends horizontally to the top of the drum (1).

10. The centrifuge according to claim 6, characterized in that The inner edge of the cover plate (18) is close to the outer wall of the top end of the liquid blocking plate seat (27), and overflow holes (30) are evenly distributed on the inner wall of the second step hole (29) in the circumferential direction.

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