Two-stage piston pushing centrifugal machine

Abstract

The invention discloses a two-stage piston pushing centrifugal machine, which relates to the technical field of centrifugal machines, and comprises a centrifugal platform, a machine base fixedly connected to the rear side of the upper surface of the centrifugal platform, a bearing box fixedly connected to the front side of the upper surface of the centrifugal platform, and a machine shell detachably connected to the front side of the bearing box, a hollow shaft and a material pushing shaft are rotationally connected into the bearing box. According to the two-stage piston material pushing centrifugal machine, through the arrangement of the blockage reducing mechanism, the sieve plate, the belt slot, the material distributing mechanism and the material pushing disc, filter residues covering the upper end opening of the belt slot are intermittently cleaned, so that the belt slot in the centrifugal machine recovers the flow capacity, and the separation effect of the centrifugal machine on materials is conveniently accelerated; meanwhile, the end opening of the tail end of the liquid inlet pipe is expanded, the materials are guided to flow, the materials are promoted to diffuse around more evenly under the action of centrifugal force, the pushing disc is vibrated intermittently, the stacking trend of the materials on the surface of the pushing disc can be broken, and therefore the solid-liquid material separation efficiency of the centrifugal machine is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of centrifuge, in particular to a double-stage piston pusher centrifuge. BACKGROUND

[0002] The double-stage piston pusher centrifuge is a high-efficiency continuous solid-liquid separation equipment, which realizes the continuous separation of the suspension and the pushing of the solid-phase material through the synergistic effect of the double-stage drum structure and the piston pushing mechanism, and is widely used in the fields of chemical industry, food and medical treatment.

[0003] When the double-stage piston pusher centrifuge is used for the solid-liquid separation of the material, the filter residue is accumulated on the sieve plate, the pushing plate pushes the filter residue and separates from the sieve plate, but the filter residue is easy to cover the upper port of the slotted plate, which affects the liquid-phase material to pass through the slotted plate and be discharged outside the centrifuge, and it is inconvenient to separate the solid and liquid of the material, and if the material directly flows to the distribution disc through the end of the feeding pipe, the material is easy to be unevenly distributed on the sieve plate, causing the different thickness of the filter residue on the sieve plate, thus affecting the separation effect of the centrifuge on the material and reducing the working efficiency of the centrifuge, which brings certain adverse effects to the use of people, and in order to solve the problems of the prior art, the double-stage piston pusher centrifuge is provided. SUMMARY

[0004] The main purpose of the present application is to provide a double-stage piston pusher centrifuge, which can effectively solve the problems in the background art.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: A double-stage piston pusher centrifuge, comprising a centrifugal platform, a machine base fixedly connected to the rear side of the upper surface of the centrifugal platform, a bearing box fixedly connected to the front side of the upper surface of the centrifugal platform, and a machine shell detachably connected to the front side of the bearing box, wherein a hollow shaft and a pushing shaft are rotatably connected inside the bearing box, a primary drum and a secondary drum are rotatably connected inside the machine shell, a pushing disc is arranged inside the secondary drum, a plurality of liquid discharge ports are formed on the outer circumferential surface of the primary drum and the secondary drum, a ring-shaped groove is formed inside the primary drum and the secondary drum adjacent to the inner side of the liquid discharge ports, a plurality of sieve plates are detachably connected to the top of the ring-shaped groove, a plurality of slotted plates are formed inside the sieve plates, a de-clogging mechanism for dredging and cleaning the inside of the slotted plate is arranged inside the ring-shaped groove on the inner side of the sieve plate, and a material distribution mechanism for assisting the pushing disc to uniformly distribute the material is arranged on the shaft of the pushing disc.

[0006] Preferably, the de-clogging mechanism comprises a ring plate slidingly connected to the bottom surface of the sieve plate, a moving piece is arranged inside the slotted plate on the upper surface of the ring plate, a movable plate is detachably connected to the lower surface of the ring plate, a magnetic sheet is fixedly connected to the rear side of the outer surface of the secondary drum on the opposite surface of the magnetic sheet at the end of the movable plate penetrating through the plurality of ring-shaped grooves, and an electromagnetic ring is fixedly connected to the rear side of the outer surface of the secondary drum on the opposite surface of the magnetic sheet.

[0007] Preferably, the mobile piece bottom is detachably connected with a movable column, the movable column is slidably connected inside the ring plate, the movable column bottom is detachably connected with a trapezoidal arch plate inside the annular groove, the movable column bottom end is rotatably connected with a ball and slidably connected with the trapezoidal arch plate upper surface.

[0008] Preferably, the trapezoidal arch plate corner is rotatable and provided with a torsional spring, the trapezoidal arch plate upper surface is fixedly connected with a plurality of concave-convex blocks, the frame surface is detachably connected with a filter screen.

[0009] Preferably, the mobile piece top is fixedly connected with a flat plate, the flat plate upper surface middle is fixedly connected with a top block, the top block front and rear ends are provided as pointed ends.

[0010] Preferably, the material distributing mechanism comprises a plurality of first rods detachably connected with the pusher disc front side surface, the first rod front end is detachably connected with a drainage cover, the drainage cover rear side is detachably connected with a support column at the pusher disc axis, the support column outer circular surface is fixedly connected with a plurality of drainage plates, and the pusher disc rear side and the primary drum side wall are provided with a shaking mechanism for intermittently shaking the pusher disc to assist the uniform distribution of the material.

[0011] Preferably, the shaking mechanism comprises a balance lever detachably connected with the pusher disc rear side, the balance lever front side outer circular surface is fixedly connected with a blocking block, the blocking block rear side is slidably connected with a plurality of sliding blocks on the balance lever outer circular surface, the sliding block upper surface is fixedly connected with a second rod, the second rod end is slidably connected with a connecting block and provided with a first return spring on the second rod outer circular surface, the connecting block front side is detachably connected with a pad ring, the balance lever outer side is detachably connected with a cylinder at the connecting block rear side, the cylinder end penetrates the primary drum and is slidably connected inside the pusher shaft, and the cylinder outer circular surface is sleeved with a second return spring.

[0012] Preferably, the blocking block front side surface is provided as an inclined surface, the blocking block rear side surface is provided as an arc surface, and the blocking block rear side thickness is greater than the blocking block front side thickness.

[0013] Compared with the prior art, the present application has the following beneficial effects: In the present application, the blocking mechanism, the sieve plate and the slot are provided to intermittently clean the filter residue covering the slot upper port, so as to restore the flow capacity of the slot, make the liquid material pass through the slot and the liquid outlet and be thrown out of the centrifugal machine, ensure the filtering precision of the sieve plate and improve the separation effect and efficiency of the centrifugal machine on the solid-liquid material.

[0014] The application has the advantages that the material is diffused to all directions by the material distribution mechanism and the pushing plate, the material is distributed evenly on the screen, the pushing plate is intermittently vibrated to break the material accumulation on the pushing plate, the material is diffused to all directions under the centrifugal force, the centrifuge separates the solid and liquid, and the working efficiency of the centrifuge is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure of the centrifuge of the application; Figure 2 is the bearing box related structure of the application; Figure 3 is the internal structure of the centrifuge of the application; Figure 4 is the internal structure of the centrifuge of the application; Figure 5 is Figure 4 is the local enlarged view of A in the application; Figure 6 is the internal structure of the centrifuge of the application; Figure 7 is the internal structure of the centrifuge of the application; Figure 8 is the internal structure of the centrifuge of the application; in the figure: 1, centrifuge platform; 11, base; 12, bearing box; 13, machine shell; 14, hollow shaft; 15, pushing shaft; 2, primary drum; 21, secondary drum; 22, pushing plate; 4, liquid discharge port; 41, annular groove; 42, screen; 43, slotted belt; 5, unblocking mechanism; 51, ring plate; 52, moving piece; 53, magnetic sheet; 54, electromagnetic ring; 55, movable plate; 6, movable column; 61, trapezoidal arch plate; 62, concave-convex block; 63, frame; 7, flat plate; 71, top block; 8, material distribution mechanism; 81, No. 1 rod; 82, flow guide cover; 83, support column; 84, flow guide plate; 9, shaking mechanism; 91, balance rod; 92, blocking block; 93, sliding block; 94, No. 2 rod; 95, connecting block; 96, No. 1 return spring; 97, grommet; 98, cylinder; 99, No. 2 return spring. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the application is further described below in combination with specific embodiments.

[0017] The utility model provides a double -stage piston push -feed centrifuge, including centrifugal platform 1, fixedly connected on the rear side of centrifugal platform 1 upper surface machine base 11, fixedly connected on the front side of centrifugal platform 1 upper surface bearing box 12 and detachably connected in bearing box 12 front side machine shell 13, bearing box 12 inside rotatable connection has hollow shaft 14 and push -feed shaft 15, machine shell 13 inside rotatable connection has primary drum 2 and secondary drum 21, and the secondary drum 21 is provided with push -feed disc 22, and the outer circle of primary drum 2 and secondary drum 21 is provided with a plurality of groups of liquid discharge ports 4, and the inside of adjacent liquid discharge port 4 is provided with annular groove 41 in primary drum 2 and secondary drum 21, and a plurality of groups of sieve plates 42 are detachably connected to the top of annular groove 41, a plurality of groups of slotted 43 are provided in the inside of sieve plate 42, and unblocking and cleaning slotted 43 inside the mechanism 5 is arranged in the inside of annular groove 41, and the shaft center of push -feed disc 22 is provided with the distribution mechanism 8 of the auxiliary push -feed disc 22 uniform distribution material.

[0018] As shown in Figures 1-2 the upper surface of centrifugal platform 1, the bottom surface of bearing box 12 is fixedly connected with the front side of centrifugal platform 1, and the bottom surface of machine base 11 is fixedly connected with the rear side of centrifugal platform 1, and at the same time, the machine shell 13 is located in front of the bearing box 12, and the machine shell 13, the bearing box 12 and the machine base 11 are in the same straight line; As shown in Figures 1-3 the machine shell 13 is provided in the shape of a cylinder, and the front and rear sides of the machine shell 13 are provided as openings, and the front cover and the rear cover are symmetrical and detachably connected to the front and rear sides of the machine shell 13, and the front cover and the rear cover are used to close the openings of the front and rear sides of the machine shell 13, and the bottom of the machine shell 13 is fixedly connected with the discharge bin and the discharge bin, the discharge bin is arranged on the front side of the bottom of the machine shell 13, and the discharge bin is arranged on the rear side of the discharge bin, wherein the inside of the discharge bin and the inside of the discharge bin are communicated with the inside of the machine shell 13, but the inside of the discharge bin is not communicated with the inside of the discharge bin; As shown in Figure 3 the secondary drum 21 is rotatably connected inside the machine shell 13 above the discharge bin, and the front side of the secondary drum 21 is provided with a material collecting bin above the discharge bin, and the material collecting bin is detachably connected with the inner wall of the machine shell 13, and a plurality of scrapers are fixedly connected to the inside of the material collecting bin in front of the secondary drum 21, and the scrapers move inside the material collecting bin with the rotation of the secondary drum 21, and the scrapers are used to scrape the solid-phase material in the material collecting bin to the discharge bin from the tangent direction and discharge to the outside of the machine shell 13 along the port at the bottom of the discharge bin; As shown in Figures 2-3As shown, the rear surface of the secondary drum 21 is detachably connected with a hollow shaft 14, the hollow shaft 14 penetrates the rear cover of the shell 13 and the bearing box 12 and is rotatably connected with a shaft wheel at the end, one end of a plurality of connecting rods is fixedly connected with the rear interior of the secondary drum 21, the other end is detachably connected with the rear surface of the pushing disc 22, the primary drum 2 wraps the outside of the pushing disc 22 and is slidingly connected with the outer circular surface of the connecting rod, the rear surface of the primary drum 2 is detachably connected with a pushing shaft 15, the pushing shaft 15 penetrates the hollow shaft 14 and is rotatably connected with a bifurcated rod at the end, the upper surface of the base 11 is provided with a pushing mechanism, the pushing mechanism comprises a speed reducer, a pushing shell and left and right eccentric wheels, the left and right eccentric wheels are located on the left and right sides of the pushing shell, the bifurcated rod tail is provided with two ends, the two ends are respectively detachably connected with the left and right eccentric wheels through positioning pins, during work, the speed reducer drives the eccentric wheel to rotate, so that the eccentric wheel drives the pushing shaft 15 to reciprocate in the hollow shaft 14, thereby realizing the reciprocating movement of the primary drum 2. As shown, Figures 1-2 The trapezoidal cover plate is installed between the base 11 and the bearing box 12, two groups of motors are installed on the upper surface of the centrifugal platform 1 below the trapezoidal cover plate, the rotating rod of the left motor is connected with the shaft wheel through a belt, so as to drive the primary drum 2 and the secondary drum 21 to rotate in the shell 13, the rotating rod of the right motor is connected with the rotating rod of the speed reducer through a belt, so as to drive the speed reducer to operate.

[0019] As shown, Figures 1-3 One end of the feeding pipe is located in front of the pushing disc 22, the other end of the feeding pipe penetrates the front cover and extends to the outside, during work, the solid-liquid material moves to the pushing disc 22 through the feeding pipe, and then the solid-liquid material diffuses radially around the surface of the pushing disc 22 under the action of centrifugal force. As shown, Figures 3-4 A plurality of liquid discharge ports 4 are formed on the outer surface of the secondary drum 21, annular grooves 41 are formed in the interior of the two groups of liquid discharge ports 4, a plurality of sieve plates 42 are detachably connected in the interior of the annular grooves 41, the interior of the sieve plate 42 is provided with a plurality of slotted holes 43, and the primary drum 2 is also provided with liquid discharge ports 4, annular grooves 41, sieve plates 42 and slotted holes 43.

[0020] As shown, Figures 1-4 During work, first, after the centrifuge is started to rotate at full speed, the solid-liquid material to be separated is continuously sent to the pushing disc 22 through the feeding pipe, under the action of centrifugal force, the solid-liquid material is distributed on the sieve plate 42 of the primary drum 2, the liquid phase material is thrown out of the primary drum 2 through the slotted holes 43 and the liquid discharge ports 4 on the sieve plate 42, and the liquid phase material slides to the interior of the liquid discharge bin and can be discharged out of the shell 13 through the bottom opening of the liquid discharge bin; The solid material is trapped on the screen plate 42 to form an annular filter cake. The pushing mechanism can drive the primary drum 2 to move back and forth through the pushing shaft 15 and the forked rod. At the same time, the pushing disc 22 and the outer circular surface of the front side of the primary drum 2 are fixedly connected with the pushing ring. Then, when the primary drum 2 returns, the pushing disc 22 pushes the filter cake forward along the axis of the primary drum 2 a certain distance through the pushing ring. When the primary drum 2 moves forward, the surface of the empty screen plate 42 is filled with solid particles from the continuously added material to form a new filter cake. This reciprocating motion pushes the filter cake forward in a pulse, causing the filter cake to leave the primary drum 2 and enter the secondary drum 21. At the same time, when the primary drum 2 moves forward, the filter cake is continuously pushed out on the screen plate 42 of the secondary drum 21 through the pushing ring. Finally, the filter cake is pushed out of the secondary drum 21 and enters the collection bin. The filter cake is scraped out tangentially to the discharge bin by the scraper installed on the secondary drum 21 and discharged to the outside of the casing 13 along the bottom port of the discharge bin.

[0021] like Figures 3-6 As shown, during the operation of the centrifuge, the anti-clogging mechanism 5 is used to intermittently clean the filter residue covering the upper port of the narrow groove 43, thereby achieving the effect of unblocking the upper port of the narrow groove 43. The anti-clogging mechanism 5 includes an annular plate 51 slidably connected to the bottom surface of the screen plate 42. Each annular groove 41 has a set of annular plates 51 inside. A movable plate 55 passes through multiple sets of annular grooves 41 and is L-shaped. The ends of multiple sets of movable plates 55 are fixedly connected to the same set of magnetic sheets 53. Corresponding to the magnetic sheets 53, an electromagnetic ring 54 is fixedly connected to the outer surface of the rear side of the first-stage drum 2. The magnetic sheets 53 are annular in shape. At the same time, the upper surface of the movable plate 55 is detachably connected to the outer surface of multiple sets of annular plates 51. A movable piece 52 is installed on the inner surface of the annular plate 51 and is located inside the slot 43. If it is necessary to clean the upper port of the slot 43, When the filter residue is removed, the electromagnetic ring 54 is energized and attracted to the magnetic plate 53, thereby connecting the end of the movable plate 55 to the outside of the first-stage drum 2. When the first-stage drum 2 moves, it drives the movable plate 55 to move inside multiple sets of annular grooves 41, and the movable plate 55 drives the ring plate 51 to move inside its respective annular groove 41, so that the movable plate 52 moves with the ring plate 51 inside the narrow groove 43. This allows the movable plate 52 to push the filter residue at the upper end of the narrow groove 43 away from the narrow groove 43, facilitating the centrifuge to efficiently separate solid and liquid materials. The distance that the movable plate 55 moves is less than the width between the front and rear sides of the annular groove 41.

[0022] like Figures 4-6As shown, the movable piece 52 can be detachably connected with the movable column 6 at the bottom, the movable column 6 is slidably connected inside the ring plate 51, and the bottom of the movable column 6 is detachably connected with the trapezoidal arch plate 61 inside the annular groove 41. The trapezoidal arch plate 61 is higher in the middle than on both sides and is inclined downward on both sides. The bottom end of the movable column 6 is rotatably connected with the ball and slidably connected with the upper surface of the trapezoidal arch plate 61. Initially, the bottom of the movable column 6 stays at the inclined position of the trapezoidal arch plate 61. The top of the movable piece 52 is lower than the upper end of the slotted 43, so that the movable piece 52 is hidden inside the slotted 43, reducing the contact between the top of the movable piece 52 and the push ring. When working, the bottom of the movable column 6 moves at the horizontal position of the trapezoidal arch plate 61. The top of the movable piece 52 is higher than the upper end of the slotted 43, facilitating the top of the movable piece 52 to unblock the upper end of the slotted 43.

[0023] As shown in Figure 5 , frames 63 can also be provided on both sides of the trapezoidal arch plate 61. The frames 63 are provided in two groups and are symmetrically arranged. The top surface and outer circular surface of the frame 63 wrap the filter screen. The frame 63 is shaped as a semicircular table. The bottom of the frame 63 is provided as an opening and covers the corresponding liquid outlet 4, reducing the situation that filter residues fall into the slotted 43 and mix with the liquid material through the liquid outlet 4, causing interference with the separation effect of the centrifugal machine on the material. Meanwhile, the upper surface of the frame 63 is inclined downward away from the axis direction, reducing the accumulation of filter residues on the upper surface of the frame 63. The corners of the trapezoidal arch plate 61 are provided as rotatable. The rotation is provided with a torsional spring, allowing the trapezoidal arch plate 61 to be movable inside the annular groove 41. A plurality of concave-convex blocks 62 are fixedly connected to the upper surface of the trapezoidal arch plate 61. When the bottom of the movable piece 52 moves on the upper surface of the trapezoidal arch plate 61, the movable column 6 collides with the concave-convex blocks 62. The vibration generated by the collision causes the filter screen to vibrate, facilitating the filter residues to separate from the filter screen.

[0024] As shown in Figure 5 , a flat plate 7 can also be fixedly connected to the top of the movable piece 52. The length of the flat plate 7 is greater than the length of the movable piece 52. The top surface of the flat plate 7 is fixedly connected with a top block 71 in the middle. The front and rear ends of the top block 71 are shaped as sharp ends, which facilitate the filter residues covering the upper end of the slotted 43 to be broken. The filter residues move to the flat plate 7 along the side of the top block 71 and then to the sieve plate 42 through the flat plate 7. Therefore, the side of the top block 71 cooperates with the flat plate 7, facilitating the filter residues to move from the inside of the upper end of the slotted 43 to the sides of the upper end of the slotted 43, which helps to speed up the unblocking of the slotted 43.

[0025] As shown in Figure 2 and Figure 7As shown, during the operation of the centrifuge, the distributing mechanism 8 assists in the diffusion of solid and liquid materials from the pusher plate 22 to the surrounding area and their even distribution on the screen plate 42. The distributing mechanism 8 includes multiple sets of first rods 81 detachably connected to the front surface of the pusher plate 22. The inner edge of the guide hood 82 expands outward, and the side of the guide hood 82 is detachably connected to the front end of the first rod 81. The outer axis of the guide hood 82 is rotatably connected to the end of the feeding pipe. By expanding the end port of the feeding pipe through the guide hood 82, the straight cylindrical conveying method is changed, which facilitates the even diffusion of materials to the surrounding area. The first rod 81 creates a gap between the guide hood 82 and the pusher plate 22, which is the overfeed area. Within the overfeed area, the support column 83 is detachably connected to the axis of the pusher plate 22. The front end of the support column 83 is tapered, and multiple sets of guide plates 84 are fixedly connected to the outer surface of the support column 83. The solid and liquid materials diffuse along the guide plates 84 and cooperate with the support column 83 to facilitate the uniform distribution of solid and liquid materials onto the screen plate 42. At the same time, under the centrifugal action, the filter cake thickness on the screen plate 42 is made uniform, which improves the separation effect and efficiency of the centrifuge.

[0026] like Figures 7-8 As shown, an intermittent shaking mechanism 9 is provided between the rear side of the pusher plate 22 and the side wall of the first-stage drum 2 to assist in the uniform distribution of materials. The shaking mechanism 9 includes a balance bar 91 detachably connected to the rear side of the pusher plate 22. A circular plate is fixedly connected to the end of the balance bar 91. A moving groove is provided at the connection between the first-stage drum 2 and the pusher shaft 15. The circular plate is slidably connected inside the moving groove. A blocking block 92 is fixedly connected to the outer circular surface of the front side of the balance bar 91. The front surface of the blocking block 92 is set as an inclined surface, while the rear surface of the blocking block 92 is set as an arc surface. The thickness of the rear side of the blocking block 92 is greater than the thickness of the front side of the blocking block 92. Multiple sets of sliders 93 are slidably connected to the rear side of the blocking block 92 on the outer circular surface of the balance bar 91. A second rod 94 is fixedly connected to the upper surface of the slider 93. A connecting block 95 is slidably connected to the end of the second rod 94, and a first return spring 96 is provided on the outer circular surface of the second rod 94. Meanwhile, a washer 97 is detachably connected to the front side of the connecting block 95, and a cylinder 98 is detachably connected to the rear side of the connecting block 95. The cylinder 98 is sleeved on the outer circular surface of the balance bar 91. The end of the cylinder 98 penetrates the side wall of the first-stage drum 2 and slides inside the moving groove. A second return spring 99 is sleeved on the outer circular surface of the cylinder 98. One end of the second return spring 99 is fixedly connected to the front side of the cylinder 98, and the other end is in contact with the side wall of the first-stage drum 2. When the primary drum 2 moves, the primary drum 2 side wall extrudes the second reset spring 99, the second reset spring 99 is gradually compressed and the round plate moves inside the moving groove, the cylinder 98 drives the sliding block 93 to extrude the blocking block 92 through the connecting block 95, with the gradually increasing extrusion force, the sliding block 93 moves along the arc surface of the blocking block 92 to the direction away from the axis, the sliding block 93 drives the top of the second rod 94 to move inside the connecting block 95, the first reset spring 96 is gradually compressed, when the top of the sliding block 93 moves from the arc surface of the blocking block 92 to the inclined surface, the extrusion force of the sliding block 93 disappears, the first reset spring 96 and the second reset spring 99 reset, since the process occurs quickly, the cylinder continues to move forward under the action of inertia, and the cylinder drives the pad ring 97 to impact the rear side of the pusher plate 22, the vibration generated by the impact can break the trend of material accumulation on the surface of the pusher plate 22, so that the material can be more evenly spread to the four directions under the action of the centrifugal force.

[0027] It should be noted that the present application is a two-stage piston pusher centrifuge, as shown in the drawings, Figures 1-8 As shown, during separation, first, after the centrifuge is started to reach full speed rotation, the solid-liquid material to be separated is continuously sent to the pusher plate 22 through the feed pipe, under the action of the centrifugal force, the solid-liquid material is distributed to the screen plate 42 of the primary drum 2, the liquid phase material is thrown out of the primary drum 2 through the slotted 43 and the liquid outlet 4, and is discharged out of the casing 13 through the liquid outlet bin; Secondly, the solid phase material is intercepted on the screen plate 42 to form an annular filter cake, when the primary drum 2 returns, the pusher plate 22 relatively moves the filter cake along the axial direction of the primary drum 2 by the push ring, and when the primary drum 2 advances, the surface of the empty screen plate 42 is filled with the continuously added solid phase material to form a new filter cake, so as to reciprocate and pulse the filter cake into the secondary drum 21, and at the same time, when the primary drum 2 advances, the filter cake is continuously pushed out of the screen plate 42 of the secondary drum 21 by the push ring, finally, the filter cake is pushed out of the secondary drum 21 and enters the material collecting bin, the filter cake is scraped out of the tangent direction to the discharge bin by the scraper installed on the secondary drum 21, and is discharged out of the casing 13 along the bottom port of the discharge bin; When the first-stage rotating drum 2 moves, the side wall of the first-stage rotating drum 2 extrudes the second reset spring 99, the second reset spring 99 is gradually compressed, and the circular plate moves inside the moving groove; the barrel 98 drives the sliding block 93 to extrude the blocking block 92 through the connecting block 95; as the extrusion force gradually increases, the sliding block 93 moves along the arc surface of the blocking block 92 to the direction away from the axis; the sliding block 93 drives the top of the second rod 94 to move inside the connecting block 95; the first reset spring 96 is gradually compressed; when the top of the sliding block 93 moves from the arc surface of the blocking block 92 to the inclined surface, the extrusion force of the sliding block 93 disappears, and the first reset spring 96 and the second reset spring 99 reset; as the process occurs quickly, the cylinder continues to move forward under the action of inertia, and the cylinder drives the pad ring 97 to impact the rear side of the pushing disc 22; the vibration generated by the impact can break the trend of material accumulation on the surface of the pushing disc 22, so as to promote the material to spread more evenly around under the action of centrifugal force. When the filter residue is cleaned, the electromagnetic ring 54 is electrified and is attracted to the magnetic sheet 53; the end of the movable plate 55 is connected to the outside of the first-stage rotating drum 2; when the first-stage rotating drum 2 moves, the first-stage rotating drum 2 drives the movable plate 55 to move inside the plurality of annular grooves 41; the movable plate 55 drives the ring plate 51 to move inside the respective annular grooves 41; the moving sheet 52 moves inside the belt slot 43 along with the ring plate 51; thus, the moving sheet 52 pushes the filter residue at the upper port of the belt slot 43 away from the inside of the belt slot 43, so as to facilitate the centrifuge to efficiently separate and process the solid-liquid material.

[0028] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application; without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A two-stage piston pusher centrifuge, comprising a centrifugal platform (1), a base (11) fixedly connected to the rear side of the upper surface of the centrifugal platform (1), a bearing housing (12) fixedly connected to the front side of the upper surface of the centrifugal platform (1), and a housing (13) detachably connected to the front side of the bearing housing (12), wherein a hollow shaft (14) and a pusher shaft (15) are rotatably connected inside the bearing housing (12), and a primary drum (2) and a secondary drum (21) are rotatably connected inside the housing (13), wherein a pusher disc (22) is provided inside the secondary drum (21), characterized in that: The outer surfaces of the primary drum (2) and the secondary drum (21) are provided with multiple sets of drain ports (4). Annular grooves (41) are provided inside the primary drum (2) and the secondary drum (21) on the inner side of adjacent drain ports (4). Multiple sets of sieve plates (42) are detachably connected to the top of the annular grooves (41). Multiple sets of narrow grooves (43) are provided inside the sieve plates (42). A clogging and cleaning mechanism (5) is provided inside the annular grooves (41) on the inner side of the sieve plates (42). A material distribution mechanism (8) is provided on the axis of the pusher plate (22) to evenly distribute the material.

2. The two-stage piston pusher centrifuge according to claim 1, characterized in that: The anti-clogging mechanism (5) includes an annular plate (51) slidably connected to the bottom surface of the sieve plate (42). The upper surface of the annular plate (51) is provided with a movable piece (52) inside the slot (43). The lower surface of the annular plate (51) is detachably connected with a movable plate (55). The end of the movable plate (55) passes through multiple sets of annular slots (41) and is fixedly connected with a magnetic piece (53). The opposite side of the magnetic piece (53) is fixedly connected with an electromagnetic ring (54) on the rear side of the outer surface of the secondary drum (21).

3. A two-stage piston pusher centrifuge according to claim 2, characterized in that: The bottom of the movable piece (52) is detachably connected to a movable column (6), which is slidably connected inside the ring plate (51). The bottom of the movable column (6) is detachably connected to a trapezoidal arch plate (61) inside the annular groove (41). The bottom end of the movable column (6) is rotatably connected to a ball bearing and slidably connected to the upper surface of the trapezoidal arch plate (61).

4. A two-stage piston pusher centrifuge according to claim 3, characterized in that: The trapezoidal arch plate (61) is rotatable at the corner and is provided with a torsion spring. Multiple sets of concave and convex blocks (62) are fixedly connected to the upper surface of the trapezoidal arch plate (61). Two sets of symmetrical frames (63) are provided on the left and right sides of the trapezoidal arch plate (61) inside the drain port (4). Filter screens are detachably connected to the surface of the frames (63).

5. A two-stage piston pusher centrifuge according to claim 3, characterized in that: The top of the movable piece (52) is fixedly connected to a plate (7), and a top block (71) is fixedly connected to the middle of the upper surface of the plate (7). The top block (71) is shaped as a pointed tip at both ends.

6. A two-stage piston pusher centrifuge according to claim 1, characterized in that: The material distribution mechanism (8) includes multiple sets of first rods (81) detachably connected to the front surface of the pusher plate (22). The front end of the first rod (81) is detachably connected to a flow guide (82). The rear side of the flow guide (82) is detachably connected to a support column (83) at the axis of the pusher plate (22). Multiple sets of flow guide plates (84) are fixedly connected to the outer circular surface of the support column (83). An intermittent shaking pusher plate (22) is provided between the rear side of the pusher plate (22) and the side wall of the first-stage drum (2) to assist in the uniform distribution of materials.

7. A two-stage piston pusher centrifuge according to claim 6, characterized in that: The shaking mechanism (9) includes a balance bar (91) detachably connected to the rear side of the pusher plate (22). A blocking block (92) is fixedly connected to the outer surface of the front side of the balance bar (91). Multiple sliders (93) are slidably connected to the rear side of the blocking block (92) on the outer surface of the balance bar (91). A second rod (94) is fixedly connected to the upper surface of the slider (93). A connecting block (95) is slidably connected to the end of the second rod (94), and a first return spring (96) is provided on the outer surface of the second rod (94). A washer (97) is detachably connected to the front side of the connecting block (95). A cylinder (98) is detachably connected to the outer side of the balance bar (91) on the rear side of the connecting block (95). The end of the cylinder (98) passes through the first-stage drum (2) and is slidably connected inside the pusher shaft (15). A second return spring (99) is sleeved on the outer surface of the cylinder (98).

8. A two-stage piston pusher centrifuge according to claim 7, characterized in that: The front surface of the blocking block (92) is set as an inclined surface, the rear surface of the blocking block (92) is set as an arc surface, and the thickness of the rear side of the blocking block (92) is greater than the thickness of the front side of the blocking block (92).

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