Double-pushing and double-discharging type solid-liquid separation structure for pushing centrifugal machine and centrifugal machine thereof

Abstract

The invention discloses a double-pushing and double-discharging type solid-liquid separation structure for a pushing centrifugal machine and the centrifugal machine thereof, relates to the technical field of solid-liquid separation equipment, and has the advantages that the discharging direction of the centrifugal machine is bidirectional discharging, and the discharging efficiency is improved. According to the technical scheme, the rotary drum is rotationally connected into the product chamber through a driving part, the screen barrel is located on the inner wall of the rotary drum, the longitudinal section of the rotary drum is in a [shape, and a first gap exists between an opening of the rotary drum and the vertical wall of the product chamber; a plurality of discharging holes are formed in the side, away from the opening of the rotary drum, of the rotary drum, and all the discharging holes are located in one side of the screen mesh cylinder. The device further comprises a bidirectional material distribution assembly arranged in the screen barrel, the driving piece pushes the bidirectional material distribution assembly to move in the screen barrel in a reciprocating mode, and solid-phase discharging pipes are arranged at the positions, below one side of the opening of the rotary drum and below the discharging holes, of the product chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of solid-liquid separation equipment, and specifically to a double-pushing and double-discharging type solid-liquid separation structure for a pusher centrifuge and its centrifuge. Background Art

[0002] As a continuously operating filtration centrifuge, the pusher centrifuge has a wide range of applications in the field of solid-liquid separation.

[0003] Currently, the existing pusher centrifuges on the market adopt a single-direction discharging structure, which is commonly used for the separation and discharging operation of the centrifuge, but the discharging efficiency is relatively low.

[0004] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above technical problems. Summary of the Invention

[0005] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a double-pushing and double-discharging type solid-liquid separation structure for a pusher centrifuge and its centrifuge, which has the advantages of enabling the discharging direction of the centrifuge to be double-direction discharging and improving the discharging efficiency.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a double-pushing and double-discharging type solid-liquid separation structure for a pusher centrifuge, including a product chamber, a drum rotatably connected in the product chamber through a driving member, and a screen cylinder located on the inner wall of the drum. The longitudinal section of the drum is in a U shape, and there is a gap one between the horizontally distributed opening of the drum and the vertical wall of the product chamber. The drum is provided with a plurality of blanking holes on the side far from the opening of the drum, and each of the blanking holes is located on one side of the screen cylinder; It further includes a two-way cloth-feeding assembly arranged in the screen cylinder. The driving member pushes the two-way cloth-feeding assembly to reciprocate in the screen cylinder. The product chamber is provided with solid-phase discharge pipes below the side and below the blanking holes of the drum opening.

[0007] By adopting the above technical solutions, the driving member drives the drum to rotate, the two-way cloth-feeding assembly performs two-way cloth-feeding on the slurry entering the drum, the drum drives the screen cylinder to rotate, and with the rotation of the screen cylinder, solid-liquid separation is performed on the slurry entering the drum. The driving member pushes the two-way cloth-feeding assembly to reciprocate in the screen cylinder, so that the separated solid-phase material is pushed into the gap one and the blanking holes as the driving member pushes the two-way cloth-feeding assembly to move, and then discharged from the two solid-phase discharge pipes of the product chamber, enabling the discharging direction of the centrifuge to be double-direction discharging and improving the discharging efficiency.

[0008] Preferably, the product chamber is provided with a mounting opening on a side wall facing the drum opening, and a door plate is installed on the outer wall of the product chamber by bolts, and the door plate closes the mounting opening, and a feed pipe is fixedly provided on the door plate, and the feed pipe transports slurry to the bidirectional distribution assembly, and the bidirectional distribution assembly is slidably connected to the outer wall of the feed pipe.

[0009] Preferably, it also includes an oil tank for hydraulic oil, the oil tank also serves as a centrifuge base, a bearing seat is mounted on the oil tank, and the driving member is arranged on the bearing seat; The driving member includes a hollow shaft that performs rotational motion and a push rod shaft that passes through the hollow shaft and performs horizontal linear motion and rotational motion. The hollow shaft is rotatably connected in a bearing seat, and one end of the hollow shaft and the push rod shaft extend out of the bearing seat into the product chamber. The drum is arranged at the end of the hollow shaft that enters the product chamber, and one end of the push rod shaft is provided with a bottom plate located in the drum, and a plurality of pillars are provided on the bottom plate. A push disk is provided at one end of each pillar away from the bottom plate. The bidirectional material distribution assembly is arranged on the push disk, and the outer wall of the push disk is provided with a push ring that contacts the inner wall of the screen cylinder.

[0010] Preferably, the bidirectional material distributing assembly comprises a main material distributing device and an auxiliary material distributing device respectively arranged on both sides of the material pushing plate; The main distributor includes a main body slidably connected to the outer wall of the feed pipe and a chassis arranged on one side of the main body, the main body includes an annular plate slidably connected to the outer wall of the feed pipe and a conical cylinder coaxially arranged on one side of the annular plate, the taper of the conical cylinder gradually moves away from the annular plate, an annular disk is coaxially arranged at one end of the conical cylinder away from the annular plate, a vertical cylinder is coaxially arranged at one end of the annular disk away from the conical cylinder, the chassis is installed on the vertical cylinder and the chassis is distributed opposite to the annular disk, and the chassis is installed on the pushing plate; A plurality of partitions are arranged on the chassis, one end of each of the partitions is in contact with the wall of the vertical cylinder, two of the partitions form a group, a material passing hole 1 is opened on the outer wall of the vertical cylinder between two adjacent groups of partitions, and a material passing hole 2 is opened in each group of partitions on the chassis.

[0011] Preferably, the auxiliary distributor includes a material through hole three opened on the pushing plate and corresponding to each material through hole two, the material through hole three is connected to the material through hole two, each of the material through holes two is distributed close to the inner wall of the vertical cylinder, the pushing plate is provided with a baffle ring on the side away from the chassis, the longitudinal section of the baffle ring is L-shaped, the horizontal part of the baffle ring is fixedly connected to the surface of the pushing plate, and the vertical distribution is opposite to the pushing plate, and each of the material through holes three is distributed opposite to the vertical part of the baffle ring.

[0012] Preferably, the hollow shaft is rotatably connected in the bearing seat, and the bearing seats are extended from both ends. The inner wall of the hollow shaft is provided with a guide key, and the outer wall of the push rod shaft is provided with a guide groove for the guide key to slide along the length direction of the push rod shaft. The rotating drum is provided with evenly distributed drainage holes in the circumferential direction, and the rotating drum is provided with a groove on the side with the screen cylinder that is connected to the drainage hole and has a size larger than the drainage hole.

[0013] Preferably, the product chamber is provided with an outer discharge plate on the side of the screen cylinder away from the hollow shaft, and an inner discharge plate is provided on the side of the screen cylinder close to the hollow shaft, and the two solid phase discharge pipes on the lower end wall of the product chamber are respectively connected to the outer discharge plate and the inner discharge plate.

[0014] Preferably, a plurality of annular baffles are provided on the inner wall of the product chamber, each of the baffles having a gap with the outer wall of the drum, and a liquid phase water outlet pipe connected to the space between adjacent baffles is provided on the outer wall of the product chamber. The outer discharge plate and the inner discharge plate are respectively fixed on the side opposite to each other of the two baffles farthest away. The outer discharge plate and the inner discharge plate include a semi-arc plate fixed on the baffle and blocking plates arranged at both ends below the semi-arc plate, and the lower parts of the two blocking plates extend into the solid phase discharge pipe.

[0015] Preferably, a washing pipe 1 is provided in the feed pipe, one end of the washing pipe 1 passes through the push plate, and the other end is provided with a bent pipe that passes through the feed pipe, and the washing pipe 1 is provided with a plurality of washing holes on the outer wall passing through the push plate; A washing pipe 2 is provided on the door plate, the washing pipe 2 is located above the feed pipe and one end of the washing pipe 2 passes through the door plate, and the other end extends toward the screen cylinder, and a plurality of nozzles for spraying toward the inner wall of the screen cylinder are provided on the washing pipe 2.

[0016] Preferably, an outer wall of the washing pipe is provided with an inverted cone block, the side of the inverted cone block with a larger taper is distributed close to the push plate, and the side with a smaller taper is distributed close to the feed pipe.

[0017] Preferably, the washing pipe is rotatably connected with a T-shaped guide pipe at one end passing through the pushing plate, the openings at both ends of the guide pipe distributed in the vertical direction extend toward the direction of the screen cylinder, the guide pipe replaces each washing hole, the tube body of the guide pipe distributed in the vertical direction is fixed on one side of the corresponding pillar, the openings at both ends of the guide pipe distributed in the vertical direction are connected through an annular sealing plate at one end passing through the pillar, the outer wall of the sealing plate is rotatably connected with a water distribution ring with a U-shaped longitudinal section, the outer wall of the water distribution ring is distributed close to the screen cylinder and is circumferentially provided with a plurality of water nozzles, and the rotating drum is provided with a driving member that makes the rotation speed of the water distribution ring and the sealing plate different.

[0018] Another object of the present invention is to provide a pusher centrifuge.

[0019] The beneficial effects of the present invention are as follows: the driving member drives the drum to rotate, the two-way distribution assembly performs two-way distribution on the slurry entering the drum, the drum drives the screen drum to rotate, and as the screen drum rotates, the slurry entering the drum is separated into solid and liquid, and the driving member pushes the two-way distribution assembly to move back and forth in the screen drum, so that the separated solid phase material is pushed into the gap 1 and the discharge hole as the driving member pushes the movement of the two-way distribution assembly, and then discharged from the two solid phase discharge pipes of the product chamber, so that the discharge direction of the centrifuge is two-way discharge, thereby improving the discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of this embodiment; Figure 2 for Figure 1 The enlarged structural diagram of the middle C part; Figure 3 for Figure 1 The enlarged structural diagram of the middle D part; Figure 4 This is a schematic diagram of the structure of the chassis of this embodiment; Figure 5 This is a schematic diagram for reflecting the slurry passage trajectory of this embodiment; Figure 6 This is a schematic diagram of the structure of the liquid phase water outlet pipe of this embodiment; Figure 7 This is a schematic diagram of the structure of the material passage hole 1 in this embodiment; Figure 8 This is a schematic diagram of the structure of the embodiment in which the horizontal part of the drum is hidden; Fig. 9 This is a schematic diagram of the structure of the flow guide pipe in this embodiment; Fig.10 It is a schematic diagram of the structure of the protective cover 1, the protective cover 2 and the protective cover 3 of this embodiment.

[0022] Description of reference numerals: In the figure: 1. Fuel tank; 2. Bearing seat; 3. Rear bearing; 4. Front bearing; 5. Rear bearing gland; 6. Front bearing gland; 7. Hollow shaft; 8. Push rod shaft; 9. Oil cylinder pulley; 10. Oil cylinder cover; 11. Composite piston; 15. Product chamber; 151. Solid phase discharge pipe; 16. Partition seal; 17. Drum; 1701. Rack; 17011. Protective cover one; 17012. Protective cover two; 17013. Protective cover three; 17014. Moving port; 17015. Driving plate; 1702. Drain hole; 1703. Groove; 1704. Feeding hole; 18. Stuffing box; 19. Stuffing box seal; 20. Push rod shaft sleeve; 21. Screen cylinder; 22. Pressure ring; 23. Bottom plate; 2301. Support; 24. Pusher plate; 2501. Annular plate; 25011. Conical cylinder; 25012. Annular disc; 25013. Vertical cylinder; 2502. Partition; 2503. Chassis; 2504. Material passing hole two; 2505. Material passing hole one; 26. Material passing hole three; 261. Retaining ring; 27. Pushing ring; 28. Bin door plate; 29. Water separating plate; 30. Feed pipe; 301. Washing pipe one; 3011. Diversion pipe; 3012. Sealing plate; 3013. Water distribution ring; 3014. Spray nozzle; 3015. Driven bevel gear; 3016. Driving plate; 3017. Driving rod; 3018. Driving bevel gear; 3019. Driving gear; 302. Elbow pipe; 303. Washing hole; 304. Washing pipe two; 33. Inner feeding plate; 34. Outer feeding plate; 35. Liquid phase outlet pipe; 36. Inverted conical block. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1: A double-push and double-discharge type solid-liquid separation structure for a pusher centrifuge, as Figure 1 , includes a product chamber 15, a drum 17 rotatably connected in the product chamber 15 through a driving member, and a screen cylinder 21 located on the inner wall of the drum 17. The longitudinal section of the drum 17 is in a C shape. There is a gap one between the horizontally distributed opening of the drum 17 and the vertical wall of the product chamber 15. A plurality of feeding holes 1704 are circumferentially provided on the side of the drum 17 away from the opening of the drum 17. The setting of the gap one and the feeding holes 1704 facilitates the discharge of the solid phase material in the drum 17. Each feeding hole 1704 is located on one side of the screen cylinder 21. Drain holes 1702 are evenly distributed in the circumferential direction on the drum 17, facilitating the discharge of water in the drum 17; the product chamber 15 is the space for the centrifuge to perform solid-liquid separation.

[0025] like Figure 1 , and also includes a two-way material distribution component arranged in the screen cylinder 21. The driving member drives the two-way material distribution component to reciprocate in the screen cylinder 21. The product chamber 15 is provided with a solid phase discharge pipe 151 below one side of the opening of the drum 17 and below the discharge hole 1704.

[0026] like Figure 1 The driving member drives the drum 17 to rotate, and the two-way distribution assembly performs two-way distribution on the slurry entering the drum 17. The drum 17 drives the screen drum 21 to rotate. As the screen drum 21 rotates, the slurry entering the drum 17 is separated into solid and liquid. The driving member pushes the two-way distribution assembly to move back and forth in the screen drum 21, so that the separated solid phase material is pushed into the gap 1 and the discharge hole 1704 as the driving member pushes the two-way distribution assembly to move, and then discharged from the two solid phase discharge pipes 151 of the product chamber 15, so that the discharge direction of the centrifuge is two-way discharge, thereby improving the discharge efficiency.

[0027] like Figure 1 The product chamber 15 is provided with an installation opening on one side wall opening toward the rotating drum 17. A door plate 28 is installed on the outer wall of the product chamber 15 by bolts. The door plate 28 closes the installation opening. A feed pipe 30 is fixed on the door plate 28. The feed pipe 30 is horizontally distributed. The feed pipe 30 conveys slurry to the two-way material distribution component, and the two-way material distribution component is slidably connected to the outer wall of the feed pipe 30, so that the two-way material distribution component can push the material while distributing the material.

[0028] like Figure 1 The double-push and double-outlet solid-liquid separation structure for a push centrifuge for slurry processing and the centrifuge thereof also include an oil tank 1 for hydraulic oil, which also serves as a centrifuge base. A bearing seat 2 is installed on the oil tank 1. The bearing seat 2 serves as a support for the centrifuge driving component and the product chamber 15. The driving component is arranged on the bearing seat 2; the product chamber 15 is arranged at one end of the bearing seat 2.

[0029] like Figure 1 The driving member includes a hollow shaft 7 that performs rotational motion and a push rod shaft 8 that penetrates the hollow shaft 7 and performs horizontal linear motion and rotational motion. The hollow shaft 7 is rotatably connected to the bearing seat 2. The specific connection structure is as follows: the front bearing 4 and the rear bearing 3 are installed in the bearing seat 2, and are fixed by the front bearing 4 gland and the rear bearing 3 gland respectively. The hollow shaft 7 is installed into the front bearing 4 and the rear bearing 3 to facilitate the rotation of the hollow shaft 7, and one end of the hollow shaft 7 and the push rod shaft 8 both extend out of the bearing seat 2 and enter the product chamber 15; like Figure 1A front sleeve and a rear sleeve are arranged between the hollow shaft 7 and the push rod shaft 8. The front sleeve and the rear sleeve are sleeved outside the push rod shaft 8 and are used to support the push rod shaft 8. The end of the hollow shaft 7 away from the drum 17 extends out of the bearing seat 2, and a cylinder pulley 9 is fixedly installed on the extended end; the cylinder pulley 9 is equipped with a cylinder cover 10; there is a composite piston 11 inside the cylinder pulley 9, and the composite piston 11 is connected to the push rod shaft 8. Under the action of hydraulic oil, the composite piston 11 automatically switches the oil circuit direction and performs reciprocating motion under the action of hydraulic oil, thereby driving the push rod shaft 8 to perform horizontal reciprocating motion.

[0030] like Figure 1 A guide key is arranged on the inner wall of the hollow shaft 7, and a guide groove is opened on the outer wall of the push rod shaft 8 for the guide key to slide along the length direction of the push rod shaft 8.

[0031] like Figure 1 The cylinder pulley 9 drives the hollow shaft 7 to rotate in the bearing seat 2. The push rod shaft 8 follows the hollow shaft 7 to rotate through the guide key, and the push rod shaft 8 follows the composite piston 11 to reciprocate.

[0032] like Figure 1 A partition seal 16 is installed between the bearing seat 2 and the product chamber 15, and the partition seal 16 is installed on the bearing seat 2; the seal between the partition seal 16 and the hollow shaft 7 adopts a carbon ring seal to isolate the medium in the product chamber 15 from entering the hydraulic system.

[0033] like Figure 1 and Figure 2 The drum 17 is longer than the drum 17 of the conventional one-way pusher centrifuge. The drum 17 rotates with the hollow shaft 7 and is located in the product chamber 15. The drum 17 is composed of a drum 17 bottom and a drum 17 wall. The inner hole on the bottom of the drum 17 is a hole for installing the push rod shaft 8. The inner hole on the bottom of the drum 17 is provided with a stuffing box 18, and a stuffing box seal 19 is installed in the stuffing box 18. A push rod shaft sleeve 20 is fixedly installed on the push rod shaft 8, and the stuffing box 18 and the push rod shaft sleeve 20 are sealed by a stuffing box seal 19 to reduce liquid leakage.

[0034] like Figure 1 and Figure 5The drum 17 is arranged at one end of the hollow shaft 7 entering the product chamber 15, and one end of the push rod shaft 8 is provided with a bottom plate 23 located in the drum 17. The bottom plate 23 is located in the drum 17. There are several pillars 2301 on the bottom plate 23, such as 8 pillars 2301. The end of each pillar 2301 away from the bottom plate 23 is provided with a push plate 24. The two-way material distribution assembly is arranged on the push plate 24. The outer wall of the push plate 24 is provided with a push ring 27 that contacts the inner wall of the screen cylinder 21. The push ring 27 pushes the slurry back and forth. The advantage of setting the push ring 27 is that it is inconvenient to replace the push plate 24 after it is worn, and the cost of replacing the push plate 24 is too high. It is convenient and economical to replace the push ring 27 after it is worn.

[0035] like Figure 1 and Figure 5 , the bidirectional material distributing assembly includes a main material distributing device and an auxiliary material distributing device respectively arranged on both sides of the pushing plate 24; like Figure 4 and Figure 5 and Figure 7 The main distributor includes a main body slidably connected to the outer wall of the feed pipe 30 and a chassis 2503 arranged on one side of the main body, the main body includes an annular plate 2501 slidably connected to the outer wall of the feed pipe 30 and a conical cylinder 25011 coaxially arranged on one side of the annular plate 2501, the taper of the conical cylinder 25011 gradually moves away from the annular plate 2501, an annular disk 25012 is coaxially arranged at one end of the conical cylinder 25011 away from the annular plate 2501, a vertical cylinder 25013 is coaxially arranged at one end of the annular disk 25012 away from the conical cylinder 25011, the chassis 2503 is installed on the vertical cylinder 25013 and the chassis 2503 is distributed opposite to the annular disk 25012, the chassis 2503 is installed on the pushing disk 24, and then the main distributor is installed on the pushing disk 24; like Figure 4 and Figure 5 and Figure 7 A plurality of partitions 2502 are provided on the chassis 2503 , and the angle between the length direction of the partition 2502 and the radial direction of the chassis 2503 is 20°±3°, so as to facilitate the slurry to flow along the partition 2502 . One end of each partition 2502 is in contact with the wall of the vertical cylinder 25013, and the other end extends toward the center of the chassis 2503. Two partitions 2502 form a group. A material passing hole 2505 is opened on the outer wall of the vertical cylinder 25013 between two adjacent groups of partitions 2502, and the two ends of the material passing hole 2505 are respectively distributed close to two adjacent partitions 2502. The chassis 2503 has a material passing hole 2504 in each group of partitions 2502, and the two ends of the material passing hole 2504 are respectively distributed close to two adjacent partitions 2502. At this time, the material passing hole 2504 and the material passing hole 1 2505 are distributed at intervals and the number is the same. The material passing hole 2504 and the material passing hole 1 2505 are distributed close to the screen cylinder 21.

[0036] like Figure 4 and Figure 5 and Figure 7 The auxiliary feeder includes a material through hole three 26 which is opened on the pushing plate 24 and corresponds to each material through hole two 2504. The material through hole three 26 is connected with the material through hole two 2504. Each material through hole two 2504 is distributed close to the inner wall of the vertical cylinder 25013. The outer wall and the inner wall of the vertical cylinder 25013 are both distributed close to the edge of the pushing plate 24. The pushing plate 24 is provided with a retaining ring 261 on the side away from the bottom plate 2503. The longitudinal section of the retaining ring 261 is L-shaped. The horizontal part of the retaining ring 261 is fixedly connected to the surface of the pushing plate 24 and is vertically distributed opposite to the surface of the pushing plate 24. Each material through hole three 26 is distributed opposite to the vertical part of the retaining ring 261.

[0037] like Figure 1 and Figure 4 and Figure 5 and Figure 7 Working principle: After the feed pipe 30 passes the slurry into the drum 17, the slurry enters between the main body and the bottom plate 2503. As the drum 17 and the screen cylinder 21 rotate together, the main body and the bottom plate 2503 are also driven to rotate. At this time, the slurry enters the space formed by the conical cylinder 25011, the annular disk 25012, the vertical cylinder 25013, and the bottom plate 2503 through the feed pipe 30. A part of the slurry flows to one side of the push plate 24 along the feed hole 2505, and the other part of the slurry flows to the other side of the push plate 24. The liquid flows to the other side of the push plate 24 along the second material hole 2504 and the third material hole 26, and is then guided to the screen cylinder 21 by the retaining ring 261, realizing bidirectional material distribution on both sides of the push plate 24. The second material hole 2504 and the first material hole 2505 are spaced and distributed in the same number, thereby realizing uniform distribution of slurry on both sides of the push plate 24, and the slurry on both sides of the push plate 24 realizes solid-liquid separation, and the solid phase material is pushed to the solid phase discharge pipes 151 on both sides of the lower end of the product chamber 15 by the reciprocating push plate 24. The push plate 24 pushes the material in two directions, and the pushing efficiency is increased to twice the original, and the output of the centrifuge is increased to about twice that of the traditional unidirectional pushing structure.

[0038] The main distributor and the auxiliary distributor solve the problem of uneven distribution, and also solve the problem of excessive vibration caused by uneven distribution of the centrifuge. The use of a long drum 17 can reduce the water content of the solid phase slurry.

[0039] like Figure 1 An outer discharge plate 34 is provided on the side of the screen cylinder 21 of the product chamber 15 away from the hollow shaft 7, and an inner discharge plate 33 is provided on the side of the screen cylinder 21 close to the hollow shaft 7. Two solid phase discharge pipes 151 on the lower end wall of the product chamber 15 are respectively connected to the outer discharge plate 34 and the inner discharge plate 33. The outer discharge plate 34 and the inner discharge plate 33 are used to guide the solid phase slurry to reduce slurry splashing.

[0040] like Figure 1 and Figure 3 The drum 17 is provided with a groove 1703 on one side of the screen cylinder 21, which is connected to the drainage hole 1702 and is larger than the drainage hole 1702. The purpose of the groove 1703 is to accelerate the discharge of the liquid phase. A plurality of annular baffles 29 are provided on the inner wall of the product chamber 15. There is a gap between each baffle 29 and the outer wall of the drum 17. The outer wall of the product chamber 15 is provided with a liquid phase outlet pipe 35 (such as Figure 6 ), the outer feed plate 34 and the inner feed plate 33 are respectively fixed on the side opposite to each other of the two water-blocking plates 29 that are farthest away. The outer feed plate 34 and the inner feed plate 33 include a semi-arc plate fixed on the water-blocking plate 29 and baffle plates arranged at both ends below the semi-arc plate. The lower parts of the two baffle plates extend into the solid phase discharge pipe 151 to facilitate the diversion of the slurry.

[0041] like Figure 1 and Figure 3 The inner wall of the drum 17 is provided with an embedding groove for embedding the screen cylinder 21 , and the screen cylinder 21 is fixed in the drum 17 by a pressing ring 22 , and the pressing ring 22 is connected to the side wall of the drum 17 by bolts.

[0042] like Figure 1 and Figure 3 The discharge holes 1704 are distributed on the drum 17 near the bottom of the drum 17. The slurry located on the inner side of the pushing plate 24 gradually moves to the bottom of the drum 17 under the reciprocating motion of the pushing plate 24, and then forms discharge from the discharge holes 1704; the slurry located on the outer side of the pushing plate 24 gradually moves to the pressing ring 22 under the reciprocating motion of the pushing plate 24, and forms discharge after leaving the pressing ring 22.

[0043] like Figure 1 In order to clean the screen cylinder 21 and the drum 17 on both sides of the centrifuge push plate 24, a washing pipe 301 is provided in the feed pipe 30. One end of the washing pipe 301 passes through the push plate 24, and the other end is provided with a bent pipe 302 that passes through the feed pipe 30. The washing pipe 301 is provided with a plurality of washing holes 303 on the outer wall of the push plate 24. The detergent is introduced through the bent pipe 302 and the washing pipe 301, and the detergent is sprayed out through each washing hole 303, so as to facilitate the cleaning of the screen cylinder 21 inside the push plate 24. like Figure 1 The second washing pipe 304 is provided on the door plate 28. The second washing pipe 304 is located above the feed pipe 30 and one end of the second washing pipe 304 passes through the door plate 28, and the other end extends toward the screen cylinder 21. The second washing pipe 304 is provided with a plurality of nozzles spraying toward the inner wall of the screen cylinder 21. The second washing pipe 304 on the door plate 28 is used to wash the slurry located outside the push plate 24 in the drum 17.

[0044] like Figure 1 An inverted cone block 36 is provided on the outer wall of the washing pipe 301. The side of the inverted cone block 36 with a larger taper is close to the push plate 24, and the side with a smaller taper is close to the feed pipe 30. On the one hand, it can reduce the slurry from passing through the hole in the middle of the push plate 24 and entering the drum 17. These slurries are not accelerated by the distributor and directly fall onto the screen in the drum 17, which will cause uneven distribution and thus cause machine vibration. This inverted cone structure can prevent this phenomenon.

[0045] In addition, if Figure 8 and Fig. 9 and Fig.10 The washing pipe 301 is located at the center of the drum 17 and cannot be sprayed close to the screen cylinder 21. Therefore, in order to improve the cleaning effect of the washing pipe 301, the washing pipe 301 is rotatably connected to a T-shaped guide pipe 3011 at one end passing through the push plate 24, that is, the guide pipe 3011 has three openings, and the horizontal end opening of the guide pipe 3011 is rotatably connected to one end of the washing pipe 301. The openings at both ends of the guide pipe 3011 distributed in the vertical direction extend toward the screen cylinder 21. The guide pipe 3011 replaces each washing hole 303, and the pipe body of the guide pipe 3011 distributed in the vertical direction is fixed on the corresponding support 2301. On one side, the openings at both ends of the guide pipe 3011 distributed in the vertical direction are connected through an annular sealing plate 3012 at one end passing through the pillar 2301, and the outer wall of the sealing plate 3012 is rotatably connected with a water distribution ring 3013 with a U-shaped longitudinal section. At this time, it is equivalent to the sealing plate 3012 closing the U-shaped opening of the water distribution ring 3013. One end of the guide pipe 3011 passes through the sealing plate 3012 to pass water into the water distribution ring 3013. The outer wall of the water distribution ring 3013 is distributed close to the screen cylinder 21 and is circumferentially provided with a plurality of water nozzles 3014, and a driving member is provided on the drum 17 to make the rotation speed of the water distribution ring 3013 and the sealing plate 3012 different.

[0046] like Figure 8 and Fig. 9 and Fig.10 The design purpose of the guide pipe 3011, the sealing plate 3012 and the water distribution ring 3013 is to guide the water in the washing pipe 301 to a position close to the screen cylinder 21, so as to strengthen the flushing force of the water flow on the inner wall of the screen cylinder 21. The driving member makes the rotation speed of the water nozzle 3014 different from the rotation speed of the screen cylinder 21, so as to facilitate flushing of various positions of the screen cylinder 21. The rotation speeds of the drum 17, the screen cylinder 21, the pushing plate 24, the sealing plate 3012 and the guide pipe 3011 are all the same. The position of the washing pipe 301 is fixed, and the guide pipe 3011 is rotatably connected to one end of the washing pipe 301, so as to facilitate the support 2301 to drive the guide pipe 3011 to rotate, and the guide pipe 3011 drives the sealing plate 3012 to rotate.

[0047] like Figure 8 and Fig. 9 and Fig.10 The driving member includes an annular passive bevel gear 3015 coaxially fixedly arranged on the side of the water distribution ring 3013 facing the pushing disk 24, a driving plate 3016 is provided on the side of the sealing plate 3012 facing the pushing disk 24, and a driving rod 3017 is rotatably connected to the driving plate 3016, one end of the driving rod 3017 is coaxially fixedly provided with an active bevel gear 3018 meshing with the passive bevel gear 3015, and the other end is coaxially fixedly provided with a driving gear 3019, a rack 1701 meshing with the driving gear 3019 is provided on the vertical inner wall of the rotating drum 17, the rack 1701 is horizontally located on one side of the driving gear 3019, the active bevel gear 3018 and the active gear 3019 are respectively located on both sides of the driving plate 3016 and the rack 1701 is located above the pushing disk 24, and there is a gap between the sealing plate 3012 and the pillar 2301 and the rack 1701 passes through.

[0048] like Figure 8 and Fig. 9 and Fig.10 , the pushing plate 24 rotates with the drum 17, so that the rotation speed of the drum 17 and the sealing plate 3012 is consistent, so that the rack 1701 and the driving gear 3019 are always meshed, and rotate together around the central axis of the drum 17, and the driving bevel gear 3018 also rotates around the central axis of the drum 17. During the rotation, since the pushing plate 24 needs to move horizontally back and forth, the driving gear 3019 moves on the rack 1701, so that the driving gear 3019 and the driving bevel gear 3018 rotate, and the self-rotating driving bevel gear 3018 drives the passive bevel gear 3015 to rotate, thereby driving the passive bevel gear 3015 to rotate, and then drives the water distribution ring 3013 to rotate. At this time, the rotation speed of the water distribution ring 3013 is different from the rotation speed of the sealing plate 3012, so that it is convenient for the water nozzle 3014 to clean the screen cylinder 21.

[0049] like Figure 8 and Fig. 9 and Fig.10One side of the water distribution ring 3013 is rotatably connected with a protective cover 17011 arranged outside the passive bevel gear 3015. The longitudinal section of the protective cover 17011 is an open horizontal U-shape, that is, the two opposite sides of the protective cover are rotatably connected with a side surface of the water distribution ring 3013. The protective cover 17011 is fixed with a protective cover 2 17012 covering the active bevel gear 3018. The protective cover 17011 is provided with a connecting hole for the active bevel gear 3018 to mesh with the passive bevel gear 3015. The vertical inner wall of the drum 17 is provided with a cover between the rack 1701 and the active gear 301 9, the upper end surface of the protective cover 17013 is provided with a moving opening 17014 for the driving gear 3019 to reciprocate, and the inner wall of the protective cover 17013 is slidably connected with a driving plate 17015 that closes the moving opening 17014, the driving rod 3017 and the driving plate 17015 rotate and the driving gear 3019 is located in the protective cover 17013, when the driving gear 3019 reciprocates along the rack 1701, the driving plate 17015 reciprocates on the inner wall of the protective cover 17013, and the moving opening 17014 is always in a closed state. The design of the protective cover 1 17011, the protective cover 2 17012 and the protective cover 3 17013 is to enable the driving parts to operate better.

[0050] Compared with the traditional one-way pushing centrifuge, this solution makes full use of the reciprocating motion during pushing, avoids energy loss, and improves the efficiency of pushing.

[0051] The specially designed push plate 24 and the main and auxiliary distributor structures solve the problem of bidirectional distribution and enable the centrifuge to operate stably.

[0052] The specially designed feed pipe 30 structure solves the problem of slurry washing inside the drum 17, making the centrifuge have a wider application range.

[0053] In addition to being used in the field of slurry treatment, the structure of this solution can also be used in the fields of environmental protection and chemical industry, and in the solid-liquid separation in the field of dehydration of inorganic products such as salt production, potash fertilizer, and ammonium sulfate. For example, the drum 17 of this solution has a maximum diameter of 1260 mm, and the unit output in the salt production industry can reach 140 tons / hour, which is twice that of the original one-way push centrifuge.

[0054] Embodiment 2: A pusher centrifuge, comprising the above-mentioned embodiment 1.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A double-push and double-outlet solid-liquid separation structure for a pusher centrifuge, characterized in that: It includes a product chamber (15), a drum (17) rotatably connected in the product chamber (15) by a driving member, and a screen cylinder (21) located on the inner wall of the drum (17). The longitudinal section of the drum (17) is in a C shape. There is a first gap between the horizontally distributed opening of the drum (17) and the vertical wall of the product chamber (15). A number of blanking holes (1704) are provided on the side of the drum (17) away from the opening of the drum (17), and each of the blanking holes (1704) is located on one side of the screen cylinder (21). It further includes a two-way cloth distributing assembly arranged in the screen cylinder (21). The driving member pushes the two-way cloth distributing assembly to reciprocate in the screen cylinder (21). Solid-phase discharge pipes (151) are provided below the side of the product chamber (15) below the opening of the drum (17) and below the blanking holes (1704).

2. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 1, characterized in that: An installation opening is provided on the side wall of the product chamber (15) facing the opening of the drum (17). A bin door plate (28) is installed on the outer wall of the product chamber (15) by bolts. The bin door plate (28) closes the installation opening. A feed pipe (30) is fixedly provided on the bin door plate (28). The feed pipe (30) conveys slurry to the two-way cloth distributing assembly, and the two-way cloth distributing assembly is slidably connected to the outer wall of the feed pipe (30).

3. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 2, characterized in that: It further includes an oil tank (1) filled with hydraulic oil. The oil tank (1) also functions as a centrifuge base. A bearing seat (2) is installed on the oil tank (1), and the driving member is arranged on the bearing seat (2). The driving member includes a hollow shaft (7) that makes a rotational motion and a push rod shaft (8) that is arranged in the hollow shaft (7) and makes a horizontal linear motion and a rotational motion. The hollow shaft (7) is rotatably connected in the bearing seat (2), and one ends of the hollow shaft (7) and the push rod shaft (8) both extend out of the bearing seat (2) and enter the product chamber (15). The drum (17) is arranged at one end of the hollow shaft (7) entering the product chamber (15). A bottom plate (23) located in the drum (17) is provided at one end of the push rod shaft (8). A number of support columns (2301) are provided on the bottom plate (23). A push plate (24) is provided at one end of each support column (2301) away from the bottom plate (23). The two-way cloth distributing assembly is arranged on the push plate (24). A push ring (27) that abuts against the inner wall of the screen cylinder (21) is provided on the outer wall of the push plate (24).

4. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 3, characterized in that: The two-way cloth distributing assembly includes a main cloth distributor and an auxiliary cloth distributor respectively arranged on both sides of the push plate (24). The main distributor comprises a main body slidably connected to the outer wall of the feed pipe (30) and a chassis (2503) arranged on one side of the main body, the main body comprises an annular plate (2501) slidably connected to the outer wall of the feed pipe (30) and a conical cylinder (25011) coaxially arranged on one side of the annular plate (2501), the taper of the conical cylinder (25011) gradually moves away from the annular plate (2501), an annular disk (25012) is coaxially arranged at one end of the conical cylinder (25011) away from the annular plate (2501), a vertical cylinder (25013) is coaxially arranged at one end of the annular disk (25012) away from the conical cylinder (25011), the chassis (2503) is mounted on the vertical cylinder (25013 and the chassis (2503) is arranged opposite to the annular disk (25012), and the chassis (2503) is mounted on the push plate (24); A plurality of partitions (2502) are provided on the chassis (2503), one end of each of the partitions (2502) is in contact with the wall of the vertical cylinder (25013), two of the partitions (2502) form a group, and a material passing hole 1 (2505) is provided on the outer wall of the vertical cylinder (25013) between two adjacent groups of partitions (2502), and a material passing hole 2 (2504) is provided in each group of partitions (2502) of the chassis (2503).

5. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 4, characterized in that: The auxiliary material distributor comprises a material passage hole three (26) opened on the material pushing plate (24) and corresponding to each material passage hole two (2504), the material passage hole three (26) is connected to the material passage hole two (2504), each of the material passage holes two (2504) is distributed close to the inner wall of the vertical cylinder (25013), the material pushing plate (24) is provided with a retaining ring (261) on the side away from the bottom plate (2503), the longitudinal section of the retaining ring (261) is L-shaped, the horizontal part of the retaining ring (261) is fixedly connected to the plate surface of the material pushing plate (24), and is vertically distributed opposite to the material pushing plate (24), and each of the material passage holes three (26) is distributed opposite to the vertical part of the retaining ring (261).

6. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 5, characterized in that: The hollow shaft (7) is rotatably connected in the bearing seat (2), and both ends extend out of the bearing seat (2); the inner wall of the hollow shaft (7) is provided with a guide key; the outer wall of the push rod shaft (8) is provided with a guide groove for the guide key to slide along the length direction of the push rod shaft (8); the rotating drum (17) is provided with drainage holes (1702) evenly distributed along the circumferential direction; the rotating drum (17) is provided with a groove (1703) on one side of the rotating drum (17) having a screen cylinder (21) and connected to the drainage hole (1702) and having a size larger than the drainage hole (1702); The product chamber (15) is provided with an outer discharge plate (34) on the side of the screen cylinder (21) away from the hollow shaft (7), and an inner discharge plate (33) is provided on the side of the screen cylinder (21) close to the hollow shaft (7). Two solid phase discharge pipes (151) on the lower end wall of the product chamber (15) are respectively connected to the outer discharge plate (34) and the inner discharge plate (33).

7. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 6, characterized in that: A plurality of annular baffles (29) are provided on the inner wall of the product chamber (15), and each of the baffles (29) has a gap with the outer wall of the drum (17). The outer wall of the product chamber (15) is provided with a liquid phase outlet pipe (35) connected to the space between adjacent baffles (2502). The outer discharge plate (34) and the inner discharge plate (33) are respectively fixed on the side opposite to the two baffles (29) farthest away. The outer discharge plate (34) and the inner discharge plate (33) include a semi-arc plate fixed on the baffle (29) and blocking plates arranged at both ends below the semi-arc plate, and the bottoms of the two blocking plates extend into the solid phase discharge pipe (151).

8. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 4, 5 or 7, characterized in that: A washing pipe (301) is provided in the feed pipe (30), one end of the washing pipe (301) passes through the push plate (24), and the other end is provided with a bent pipe (302) that is bent and passes through the feed pipe (30), and a plurality of washing holes (303) are opened on the outer wall of the washing pipe (301) that passes through the push plate (24); A second washing pipe (304) is provided on the door plate (28), the second washing pipe (304) is located above the feed pipe (30), one end of the second washing pipe (304) passes through the door plate (28), and the other end extends in the direction of the screen cylinder (21), and a plurality of nozzles for spraying toward the inner wall of the screen cylinder (21) are provided on the second washing pipe (304); An inverted cone block (36) is provided on the outer wall of the washing pipe 1 (301); the side of the inverted cone block (36) with a larger taper is close to the push plate (24), and the side of the inverted cone block (36) with a smaller taper is close to the feed pipe (30).

9. The double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to claim 8, characterized in that: The washing pipe 1 (301) is rotatably connected to a T-shaped guide pipe (3011) at one end passing through the push plate (24). The openings at both ends of the guide pipe (3011) distributed in the vertical direction extend in the direction of the screen cylinder (21). The guide pipe (3011) replaces each washing hole (303). The pipe body of the guide pipe (3011) distributed in the vertical direction is fixed to one side of the corresponding support (2301). The guide pipe (3011) is vertically connected to the side of the corresponding support (2301). The openings at both ends of the distribution direction are connected at one end of the support (2301) through an annular sealing plate (3012), and the outer wall of the sealing plate (3012) is rotatably connected to a water distribution ring (3013) with a U-shaped longitudinal section. The outer wall of the water distribution ring (3013) is distributed close to the screen cylinder (21) and is circumferentially provided with a plurality of water spray nozzles (3014). The rotating drum (17) is provided with a driving member that enables the water distribution ring (3013) and the sealing plate (3012) to have different rotation speeds.

10. A pusher centrifuge, comprising the double-push and double-outlet solid-liquid separation structure for a pusher centrifuge according to any one of claims 1 to 9.

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