CN108939629B - Shuttle valve unloading pipe type solid-liquid separator - Google Patents
Shuttle valve unloading pipe type solid-liquid separator Download PDFInfo
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- CN108939629B CN108939629B CN201811158902.2A CN201811158902A CN108939629B CN 108939629 B CN108939629 B CN 108939629B CN 201811158902 A CN201811158902 A CN 201811158902A CN 108939629 B CN108939629 B CN 108939629B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
Abstract
The invention discloses a shuttle valve discharge pipe type solid-liquid separator, which comprises a shell with a feed channel and a discharge channel and a rotary drum component arranged in the shell; the feeding channel is positioned at the lower part of the shell, the discharging channel comprises a clarified liquid overflow channel and a slag discharge channel, the clarified liquid overflow channel is positioned at the upper part of the shell, and the slag discharge channel is positioned at the bottom of the rotary drum assembly; the rotary drum assembly comprises a main shaft, the upper part of the main shaft is connected with a power system, the lower part of the main shaft is connected with a liquid outlet head, the lower end of the liquid outlet head is connected with the rotary drum, the shuttle valve assembly is attached to the inside of the rotary drum in a wall-mounted fit manner, and the main shaft, the liquid outlet head, the rotary drum and the shuttle valve assembly are driven to synchronously rotate through the; the upper end of the shuttle valve assembly is connected with a pneumatic device, and after solid-liquid separation is finished, the shuttle valve assembly is pushed to move downwards along the inner wall of the rotary drum through compressed air introduced by the pneumatic device so as to remove the solid phase. The invention not only solves the technical problem of large headroom of a plant required for placing the centrifugal separator, but also solves the technical problem that solid phase or sediment is easy to remain in the rotary drum.
Description
Technical Field
The invention relates to solid-liquid separation equipment, in particular to a shuttle valve discharge pipe type solid-liquid separator.
Background
At present, intermediate products such as biological fermentation products, foods, medicines, fine chemicals and the like are usually subjected to solid-liquid separation by adopting a common tubular separator. The upper part of a drum of a common tubular separator is provided with a flexible shaft support, the lower part of the drum is provided with an auxiliary support, a three-wing plate made of nonmetal is arranged in the drum, when solid phase or sediment is unloaded, the solid phase or sediment and the three-wing plate need to be unloaded together by manpower, and the unloading mode is easy to cause pollution to a separated product.
CN100427212C discloses a centrifugal separator for discharging solids by means of an axially moving scraper or a piston/extrusion mechanism. The axial motion scraper is for hard-compacted or friable solids and includes an integral feed liquid accelerator and feed orifice. The piston/extrusion mechanism is for viscous solids and includes a piston extending into a separator bowl and having an aperture to allow fluid communication across the piston. After separation is complete, a centrate valve closes one end of the bowl and the piston is driven axially one end within the bowl by an actuator. A drum suspension mechanism employs a spherical mounting structure and a short spindle. A bearing and the spindle of the drum are mounted in a bearing housing. The suspension mechanism is held by a ring and holder fixed to the separator and brought into pressure contact with the spherical portion of the bearing housing. When the solid phase is discharged, the Oldham coupling is slowly lifted under the action of a piston actuator comprising a plunger and a cylinder, so that the piston head is driven to move upwards, accumulated solids are scraped off by the piston head, and finally, a compression space above the piston head is filled. Although the centrifugal separator can discharge solid phase or sediment, the clear height of a plant for placing the centrifugal separator is larger than the sum of the height of the centrifugal separator and the length of the Oldham's coupling; on the other hand, accumulated solid phase or sediment is scraped and separated through the piston head, so that the solid phase or sediment is easy to remain on the upper wall of the piston head, and the next solid-liquid separation is influenced.
Disclosure of Invention
Aiming at the problems in the background art, the invention aims to provide a shuttle valve discharge pipe type solid-liquid separator which has small required plant net height and small solid phase or sediment residual quantity in a rotary drum.
The upper and lower directional terms of the present invention are defined based on the drawings of the specification unless otherwise specified.
The purpose of the invention is realized by adopting the technical scheme as follows.
A shuttle valve discharge pipe type solid-liquid separator comprises a machine shell with a feed channel and a discharge channel and a rotary drum component arranged in the machine shell;
the feeding channel is positioned at the lower part of the shell, the discharging channel comprises a clarified liquid overflow channel and a slag discharge channel, the clarified liquid overflow channel is positioned at the upper part of the shell, and the slag discharge channel is positioned at the bottom of the rotary drum component; the rotary drum assembly comprises a main shaft, the upper part of the main shaft is connected with a power system, the lower part of the main shaft is connected with a liquid outlet head, the lower end of the liquid outlet head is connected with the rotary drum, the shuttle valve assembly is attached to the rotary drum in a fit manner, and the power system drives the main shaft, the liquid outlet head, the shuttle valve assembly and the rotary drum to synchronously rotate (namely the power system drives the rotary drum assembly to rotate);
the upper end of the shuttle valve assembly is connected with a pneumatic device, and after solid-liquid separation is completed, compressed air introduced by the pneumatic device pushes the shuttle valve assembly to move downwards to be attached to the inner wall of the rotary drum so as to remove solid phases.
Further, the shuttle valve assembly comprises an upper shuttle valve half, a lower shuttle valve half, a middle slide valve, an ejector rod, a distance mandrel, a first spring, an upper sealing ring and a lower sealing ring, the middle slide valve is positioned between the upper shuttle valve half and the lower shuttle valve half, the distance mandrel penetrates through the upper shuttle valve half, the lower shuttle valve half and the middle of the middle slide valve, one end of the ejector rod is connected with the middle slide valve, the other end of the ejector rod penetrates through the upper shuttle valve half and contacts with the lower end face of the liquid outlet head, the first spring is positioned between the middle slide valve and the lower shuttle valve half, and the upper shuttle valve half forms a sealing structure with the inner wall of the rotary drum through the. By adopting the structure, the shuttle valve assembly can be stopped at the uppermost part of the rotary drum by utilizing the frictional resistance between the lower sealing ring, the upper sealing ring and the inner wall of the rotary drum, and the lower end surface of the liquid outlet head is propped against by overcoming the acting force of the first spring through the ejector rod, so that a circular seam is formed between the outer conical surface of the middle slide valve and the inner conical surface of the upper half part of the shuttle valve, and the clear liquid can overflow conveniently.
Preferably, the rotary drum is composed of a rotary drum cylindrical section and a rotary drum conical section, the rotary drum cylindrical section is connected with the rotary drum conical section through a locking nut, and the lower half of the shuttle valve is of a conical structure matched with the rotary drum conical section.
Furthermore, the pneumatic device comprises a cross beam and a first air inlet device arranged on the cross beam, a hollow pipe with two open ends is movably arranged below the first air inlet device, the upper end of the hollow pipe is abutted (abutted and contacted) with an outlet of the first air inlet device, the lower end of the hollow pipe is abutted with the upper end face of the shuttle valve assembly, and compressed air introduced by the first air inlet device enters the hollow pipe and pushes the shuttle valve assembly to move downwards to be attached to the inner wall of the rotary drum so as to remove the solid phase.
Furthermore, the first air inlet device comprises an air inlet head, an air inlet channel is arranged in the air inlet head, a spring seat is arranged at the inlet of the air inlet channel, an external air source is connected into the air inlet channel through the spring seat, an inner cone sealing ring is arranged at the outlet of the air inlet channel, and the inner cone sealing ring is matched and sealed with the outer conical surface at the upper end of the hollow pipe, so that compressed air can enter the hollow pipe without leakage.
Furthermore, the overflow channel is arranged on the liquid outlet head, a third spring seat and a third spring are arranged in the liquid outlet head near the overflow channel, a slide valve is also arranged in the overflow channel, and the slide valve is connected with the third spring; when the power system drives the rotary drum assembly to rotate, the slide valve presses the third spring under the action of centrifugal force to open the overflow channel.
Furthermore, the power system comprises a motor base and a motor arranged on the motor base, a motor shaft of the motor is connected with a main shaft through a belt wheel and a toothed belt, the main shaft is arranged in a bearing seat through a pair of high-speed bearings, the bearing seat is clamped between an upper concave spherical support and a lower concave spherical support in a swinging manner, and the concave spherical supports are arranged in the bearing seats; the main shaft, the belt wheel and the ball bearing are sleeved on the upper part of the hollow tube, and a second spring is sleeved on the hollow tube below the ball bearing; the pneumatic device also comprises first air cylinders, the two first air cylinders are connected with the cross beam, the first air cylinders drive the cross beam to move downwards to drive the hollow pipe to move downwards, and meanwhile, the inner ring of a ball bearing on the hollow pipe compresses the second spring, so that the shuttle valve assembly is pushed to move downwards for a short distance, and a closed space is formed between the liquid outlet head and the shuttle valve; compressed air enters the closed space through the hollow pipe and pushes the shuttle valve assembly to move downwards along the inner wall of the rotary drum so as to remove solid phase.
Furthermore, a liquid outlet seat is arranged at the upper part of the shell, an upper supporting seat is fixed at the upper end of the liquid outlet seat, and a bearing seat is movably arranged in the upper supporting seat through an anti-rotating pin. The pneumatic device is positioned above the upper support seat.
Furthermore, a second air inlet device communicated with the rotary drum is arranged below the rotary drum, and the shuttle valve assembly is driven by the second air inlet device to move upwards and reset along the inner wall of the rotary drum.
Furthermore, an arch frame is arranged below the rotary drum, the upper end of the arch frame is opposite to the lower end of the rotary drum and is not contacted with the lower end of the rotary drum, the arch frame is connected to the lower part of the shell through a rotating shaft, the rotating shaft is connected with a second cylinder, and the second cylinder drives the rotating shaft to rotate so as to drive the arch frame to turn over; the feeding channel is positioned on the bow-shaped frame, and when the upper end of the bow-shaped frame is aligned with the lower end of the rotary drum, slurry can be added into the rotary drum through the feeding channel; when the bow-shaped frame is turned by 90 deg., the slurry can not be added into the rotary drum.
Further, a hollow piston rod is installed in the cylinder body below the arched frame, a slag discharge ball valve is arranged at the lower end of the hollow piston rod, and a sealing ring is arranged at the upper end of the hollow piston rod; when the upper end of the bow-shaped frame is aligned with the lower end of the rotary drum, the upper end of the hollow piston rod and the bow-shaped frame form a sealing structure together through a sealing ring; when the bow-shaped frame is turned over for 90 degrees, the hollow piston rod can move upwards, the upper end of the hollow piston rod and the lower end of the rotary drum form a seal through the seal ring, and at the moment, compressed air can be introduced from the hollow piston rod to push the shuttle valve assembly to move upwards to the limit position.
Preferably, the second air inlet means communicates with the hollow piston rod. By adopting the structure, compressed air can enter the hollow part of the hollow piston rod through the second air inlet device, and the residual sediments in the hollow piston rod are blown out.
Further, a residual liquid discharge passage with a valve is provided in the lower side wall of the casing to discharge residual liquid from the drum when the separator stops separating operation.
Furthermore, the casing is of a jacket structure, a refrigerant inlet and a refrigerant outlet which are communicated with the hollow part of the jacket structure are arranged on the casing, and a vacuumizing port is also arranged on the casing. Adopt such structure on the one hand can let in the refrigerant in order to solve the problem that generates heat in the centrifugal separation process towards jacket structure hollow part, on the other hand can be through evacuating device to the casing in the evacuation to alleviate the problem that rotary drum and air friction and generate heat.
Furthermore, the machine shell, the motor base and the second cylinder are respectively fixed on the machine base.
Has the advantages that: according to the invention, the cross beam is driven to move downwards through the first cylinder with a small stroke to drive the hollow pipe to move downwards, so that the shuttle valve assembly is pushed to move downwards for a small distance (instead of the whole length of the rotary drum), a closed space is formed between the liquid outlet head and the shuttle valve, then compressed air enters the closed space and pushes the shuttle valve assembly to move downwards to a limit position along the inner wall of the rotary drum, so that a solid phase is removed, the total height of the solid-liquid separator is greatly reduced, compared with a centrifugal separator in the background technology, the total working height of the solid-liquid separator can be reduced by more than one third, and the solid phase is discharged very conveniently and quickly; after the solid-liquid separation is carried out by adopting the invention, the solid phase does not need to be removed by disassembling and assembling the rotary drum component, so that not only is the auxiliary time for the solid-liquid separation saved greatly, but also the auxiliary time can be saved by at least 20 minutes when the solid-liquid separation is carried out once compared with the solid-liquid separation carried out by adopting a common tubular separator, and an operator does not need to directly contact the solid phase or sediment, thereby causing no pollution to solid phase materials or separation products; the invention can also conveniently carry out on-site cleaning and on-site sterilization, and is particularly suitable for solid-liquid separation of suspension with small solid-phase concentration, small solid-phase particles, large liquid viscosity, small density difference of solid phase and liquid phase and high cleanliness requirement.
Drawings
FIG. 1 is a sectional view of a shuttle valve discharge pipe type solid-liquid separator in the embodiment;
FIG. 2 is a sectional view of a pneumatic device of the shuttle valve discharge pipe type solid-liquid separator in FIG. 1.
Detailed Description
While the best mode of the invention will be described in conjunction with specific embodiments, it is to be understood that the following examples are not to be construed as limiting the scope of the invention, and that insubstantial modifications and adaptations of the invention may be made by those skilled in the art in light of the teachings herein.
Examples
A shuttle valve discharge pipe type solid-liquid separator is disclosed, as shown in figure 1 and figure 2, and comprises a machine shell 46 with a feed channel 47 and a discharge channel, and a rotary drum assembly arranged in the machine shell 46; wherein the feed channel 47 is located at the lower part of the machine shell 46, the discharge channel comprises a supernatant liquid overflow channel 37 and a slag discharge channel, the supernatant liquid overflow channel 37 is located at the upper part of the machine shell 46, the supernatant liquid overflow channel 37 is connected with the liquid discharge pipe 38, and the supernatant liquid is guided to a corresponding container through the liquid discharge pipe 38. The slag discharge channel is positioned at the bottom of the rotary drum component; the rotary drum component comprises a main shaft 35, the upper part of the main shaft 35 is connected with a power system, the lower part of the main shaft 35 is connected with a liquid outlet head 23, the lower end of the liquid outlet head 23 is connected with the rotary drum, and the shuttle valve component is in adherent fit in the rotary drum. The main shaft 35, the liquid outlet head 23, the shuttle valve assembly and the rotary drum are driven by a power system to synchronously rotate; the upper end of the shuttle valve component is connected with the pneumatic device, and after solid-liquid separation is finished, the shuttle valve component is pushed to move downwards along the inner wall of the rotary drum through compressed air introduced by the pneumatic device so as to remove the solid phase.
The shuttle valve assembly comprises an upper shuttle valve half 20, a lower shuttle valve half 14, a middle slide valve 43, a mandril 42, a distance mandrel 45, a first spring 15, an upper sealing ring 21 and a lower sealing ring 17, wherein the middle slide valve 43 is positioned between the upper shuttle valve half 20 and the lower shuttle valve half 14, the distance mandrel 45 is arranged in the middle of the upper shuttle valve half 20, the lower shuttle valve half 14 and the middle slide valve 43 in a penetrating manner, one end of the mandril 42 is connected with the middle slide valve 43, the other end of the mandril 42 penetrates through the upper shuttle valve half 20 and contacts with the lower end face of the liquid outlet head 23, the first spring 15 is positioned between the middle slide valve 43 and the lower shuttle valve half 14, and the upper shuttle valve half 20 forms sealing with the inner wall of the rotary. By adopting the structure, the shuttle valve assembly can be stopped at the uppermost part of the rotary drum by utilizing the frictional resistance between the lower sealing ring 17, the upper sealing ring 21 and the inner wall of the rotary drum, and the lower end surface of the liquid outlet head 23 is propped against the acting force of the first spring 15 through the mandril 42, so that the annular gap 16 is formed between the outer conical surface of the middle slide valve 43 and the inner conical surface of the upper half 20 of the shuttle valve, and the clear liquid can conveniently overflow upwards.
The rotary drum is composed of a rotary drum cylindrical section 11 and a rotary drum conical section 7, the rotary drum cylindrical section 11 is connected with the rotary drum conical section 7 through a locking nut 8, and the lower half 14 of the shuttle valve is of a conical structure matched with the rotary drum conical section 7.
The pneumatic device comprises a cross beam 30 and a first air inlet device arranged on the cross beam 30, a hollow pipe 26 with two open ends is movably arranged below the first air inlet device, the upper end of the hollow pipe 26 is abutted with the outlet of the first air inlet device, the lower end of the hollow pipe 26 is abutted with the upper end face of the shuttle valve assembly, and compressed air introduced by the first air inlet device enters the hollow pipe 26 and pushes the shuttle valve assembly to move downwards along the inner wall of the rotary drum so as to remove solid phases.
The first air inlet device comprises an air inlet head 61, an air inlet channel 60 is arranged in the air inlet head 61, a connector 59 is arranged at the inlet of the air inlet channel 60 and is connected to an external air source through the connector 59, an inner cone sealing ring 58 is arranged at the outlet of the air inlet channel 60, the inner cone sealing ring 58 is matched and sealed with an outer cone 57 at the upper end of the hollow pipe 26, and compressed air enters the hollow pipe 26.
The overflow channel 37 is arranged on the liquid outlet head 23, a third spring seat 39 and a third spring 40 are arranged in the liquid outlet head 23 near the overflow channel 37, a slide valve 41 perpendicular to the overflow channel 37 is arranged in the overflow channel 37, and the slide valve 41 is connected with the third spring 40; when the power system drives the drum assembly to rotate, the spool valve 41 is pressed against the third spring 40 by centrifugal force to open the overflow passage 37.
The power system comprises a motor base 50 and a motor 18 arranged on the motor base 50, wherein a motor shaft of the motor 18 drives a main shaft 35 through a belt pulley 22 and a toothed belt 24, the belt pulley comprises a driving belt pulley 22 and a driven belt pulley 28, the driving belt pulley 22 is connected with the driven belt pulley 28 through the toothed belt 24, the main shaft 35 is installed in a bearing seat 31 through a pair of high-speed bearings 51, the bearing seat 31 is clamped between an upper concave spherical support and a lower concave spherical support 34 in a swinging mode, and the concave spherical supports 34 are installed in the bearing seats 32; the main shaft 35, the belt wheel and the ball bearing 29 are sleeved on the hollow tube 26, and the hollow tube 26 below the ball bearing 29 is sleeved with a second spring 27; the pneumatic device further comprises two sets of first cylinders 56, the two sets of first cylinders 56 are symmetrically arranged on two sides of the air inlet head 61, the first cylinders 56 are connected with the cross beam 30 through bolts, the first cylinders 56 are vertically arranged, the cross beam 30 is horizontally arranged, the air inlet head 61 is fixed on the cross beam 30 through screws 62, the first cylinders 56 drive the cross beam 30 to move downwards so as to drive the hollow pipe 26 to move downwards, meanwhile, an inner ring of the ball bearing 29 on the hollow pipe 26 compresses the second spring 27, and then the shuttle valve assembly is pushed to move downwards for a short distance, so that a closed space is formed between the liquid outlet head 23 and the shuttle valve assembly; compressed air enters the closed space through the hollow tube 26 and pushes the shuttle valve assembly to move down against the inner wall of the drum to discharge the solid phase.
Wherein, the upper part of the shell 46 is provided with a liquid outlet seat 36, the supporting seat 32 is fixed at the upper end of the liquid outlet seat 36, the bearing seat 31 is movably arranged in the supporting seat 32 through an anti-rotation pin 33, and the pneumatic device is positioned above the supporting seat 32.
Wherein, a second air inlet device 49 communicated with the rotary drum is arranged below the rotary drum, and the shuttle valve assembly is driven by the second air inlet device 49 to move upwards and reset along the inner wall of the rotary drum.
Wherein, an arc frame 6 is arranged below the rotary drum, the upper end of the arc frame 6 is opposite to the lower end of the rotary drum without contacting, the arc frame 6 is connected with the lower part of the casing 46 through a rotating shaft, the rotating shaft is connected with a second cylinder 9, and the second cylinder 9 drives the rotating shaft to rotate so as to drive the arc frame 6 to turn over; the feed channel 47 is positioned on the bow-shaped frame 6, and when the upper end of the bow-shaped frame 6 is aligned with the lower end of the rotary drum, slurry can be added into the rotary drum through the feed channel 47; when the bow 6 is turned by 90 deg., the slurry can not be added into the rotary drum.
A hollow piston rod 5 is arranged in the cylinder body 2 below the bow-shaped frame 6, the lower end of the hollow piston rod 5 is provided with a slag discharge ball valve 1, and the upper end of the hollow piston rod 5 is provided with a sealing ring 25; when the upper end of the bow-shaped frame 6 is aligned with the lower end of the rotary drum, the upper end of the hollow piston rod 5 and the bow-shaped frame 6 form a sealing structure together through a sealing ring 25; when the bow-shaped frame 6 is turned by 90 degrees, the hollow piston rod 5 can move upwards, the upper end of the hollow piston rod 5 and the lower end of the rotary drum form a sealing structure through the sealing ring 25, and at the moment, compressed air can be introduced into the hollow piston rod 5 to push the shuttle valve assembly to move upwards to the limit position.
Wherein the second air inlet means communicates with the hollow piston rod 5. With this configuration, compressed air can be introduced into the hollow portion of the hollow piston rod 5 by the second air intake device, and the sediment remaining therein can be blown out.
A residual liquid discharge passage 3 having a valve 4 is provided in a lower side wall of the casing 46 to discharge residual liquid from the drum when the separator stops separating operation.
The casing 46 is a jacket structure, specifically, the annular jacket 12 is externally arranged on the casing 46, the length of the annular jacket 12 is preferably close to the length of the cylindrical section 11 of the drum, the casing 46 is provided with a refrigerant inlet 44 and a refrigerant outlet 19 which are communicated with the hollow part of the jacket structure, and the casing 46 is further provided with a vacuum pumping port 10. By adopting the structure, on one hand, a refrigerant can be introduced into the hollow part of the jacket to solve the heating problem in the centrifugal separation process, and on the other hand, the shell 46 can be vacuumized through the vacuumizing device through the vacuumizing port 10, so that the heating problem caused by the friction between the rotary drum and air is relieved.
Wherein, the casing 46, the motor base 50 and the second cylinder 9 are respectively fixed on the base 13.
The operation process and the principle of the shuttle valve discharge pipe type solid-liquid separator are as follows:
referring to fig. 1 and 2, the rotational motion of the motor 18 is transmitted to the main shaft 35 through the driving pulley 22, the toothed belt 24 and the driven pulley 28, so that the main shaft drives the drum assembly to rotate with a separation factor of up to 15000-; under the rotary drum component, a second cylinder 9 is connected with one end of a rotating shaft of the bow-shaped frame 6, and the second cylinder 9 works when needed to turn the bow-shaped frame 6 for 90 degrees; when the sediment remained in the hollow piston rod 5 needs to be removed, the bow-shaped frame 6 is positioned at the upper position, compressed air is introduced from the second air inlet device 49, the slag-discharging ball valve 1 is opened, and the sediment is discharged out of the machine;
the shuttle valve component is stopped at the top of the rotary drum component by using the frictional resistance of the lower sealing ring 17, the upper sealing ring 21 and the inner hole of the cylindrical section 11 of the rotary drum, at the moment, the mandril 42 overcomes the acting force of the first spring 15 and butts against the lower end surface of the liquid outlet head 23, so that a circular seam 16 is formed between the outer conical surface of the middle slide valve 43 and the inner conical surface of the upper half 20 of the shuttle valve, and an overflow channel is reserved for clear liquid;
before the shuttle valve discharge pipe type solid-liquid separator operates, a refrigerant can be added into the annular jacket 12 from a refrigerant inlet 44 at the lower part if needed, and the used refrigerant overflows from a refrigerant outlet 19 at the upper part to take away heat generated by the friction between the rotor and air in the shell 46 due to high-speed rotation of the rotor; when necessary, a vacuum pump can be connected to the vacuum suction port 10 to form a low vacuum state in the casing 46, so that the friction between the rotary drum and air is reduced;
when the shuttle valve discharge pipe type solid-liquid separator works, the rotary drum component rotates at a high speed, the slide valve 41 which is arranged on the liquid outlet head 23 and is vertically crossed with the overflow channel 37 is acted by strong centrifugal force, and is pressed towards the third spring seat 39 by overcoming the acting force of the third spring 40, so that the overflow channel 37 is opened to prepare for the overflow of clear liquid; the suspension liquid is introduced into the rotary drum through a feeding channel 47, when the depth of the liquid pool reaches an overflow channel 37, the clarified liquid starts to overflow and is discharged out of the machine through a liquid discharge pipe 38, after a period of separation, when the clarified liquid is detected to become turbid, feeding is stopped and the rotary drum assembly stops rotating, at the moment, a slide valve 41 arranged on a liquid outlet head 23 moves towards the central line of a main shaft 35 under the action of a third spring 40 and closes the overflow channel 37, meanwhile, the liquid remained on the surface of the sediment in the rotary drum assembly collapses and enters the bottom of a machine shell 46 from the lower opening of a conical section 7 of the rotary drum, and the liquid is discharged out of the machine through a residual liquid discharge channel 3 and a valve 4 which are arranged at the bottom of the; the second cylinder 9 acts, the bow-shaped frame 6 is pushed to rotate 90 degrees through the force arm, the hollow piston rod 5 arranged on the cylinder body 2 is lifted, the sealing ring 25 arranged above the hollow piston rod 5 is tightly attached and sealed with the small-end outer conical surface of the conical section 7 of the rotary drum, and sediment from the rotary drum is prepared to be received; the two first cylinders 56 are actuated simultaneously to drive the cross beam 30 and thus the air inlet 61 downwards, the inner cone seal ring 58 mounted below the air inlet first contacts the outer cone 57 of the hollow tube 26, and the second spring 27 is compressed by the inner race of the ball bearing 29 mounted on the hollow tube 26, thereby pushing the shuttle valve assembly to move downwards for a short distance, leaving a closed space between the liquid outlet head 23 and the upper shuttle valve half 20, the mandril 42 fixed on the middle slide valve 43 rises along with the middle slide valve 43 under the action of the first spring 15 to close the annular seam 16, after the air inlet head 61 on the cross beam 30 presses the hollow pipe 26 to the extreme position, air is supplied to the hollow tube 26 through the air inlet passage 60, the shuttle valve assembly is pushed down to the drum cone section 7, thereby extruding the sediment out of the rotary drum and discharging most of the sediment out of the machine through the hollow piston rod 5 and the slag discharge ball valve 1 in sequence;
the hollow piston rod 5 retreats downwards to the limit position, then the second air cylinder 9 is used for driving the rotating shaft of the arc-shaped frame 6 to rotate 90 degrees to the position shown in figure 1, the hollow piston rod 5 moves upwards again, the sealing ring 25 arranged on the upper part of the hollow piston rod and the arc-shaped frame sealing cone 48 below the arc-shaped frame 6 form a seal, compressed air enters the hollow part of the hollow piston rod 5 through the second air inlet device 49, and sediment remained in the hollow part is extruded out of the machine through the slag-discharging ball valve 1;
the hollow piston rod 5 retreats downwards again to the limit position, the sealing ring 25 is separated from the bow frame sealing cone 48, the second air cylinder 9 is used for driving the rotating shaft of the bow frame 6 to rotate 90 degrees, the hollow piston rod 5 moves upwards, the sealing ring 25 on the hollow piston rod is tightly jointed with the drum conical section 7, compressed air is introduced into the drum from the second air inlet device 49 to push the shuttle valve assembly to move upwards to the limit position, at the moment, the end part of the ejector rod 42 arranged on the middle slide valve 43 is contacted with the lower plane of the liquid outlet head 23, the first spring 15 is compressed, the annular seam 16 is opened, and preparation is made for the next working cycle of the separator.
In the embodiment, the compressed air introduced by the pneumatic device pushes the shuttle valve assembly to move downwards along the inner wall of the rotary drum so as to unload the solid phase, so that the technical problem that a factory building for placing a centrifugal separator needs large clearance is solved, and the technical problem that the solid phase or sediment is easy to remain in the rotary drum is solved; the method comprises the steps that firstly, a first air cylinder drives a cross beam to move downwards to drive a hollow pipe to move downwards, so that a shuttle valve assembly is pushed to move downwards for a short distance to form a closed space between a liquid outlet head and a shuttle valve, then compressed air enters the closed space and pushes the shuttle valve assembly to move downwards along the inner wall of a rotary drum to unload a solid phase, so that the total height of the solid-liquid separator is greatly reduced, compared with a centrifugal separator in the background technology, the working height of the solid-liquid separator can be reduced by more than one third, the solid phase is very conveniently and quickly discharged, and the time for discharging the solid phase is shortened; after solid-liquid separation, a rotary drum component is not required to be disassembled and assembled to remove a solid phase, so that a large amount of auxiliary time for solid-liquid separation is saved, compared with the method of carrying out solid-liquid separation by adopting a common tubular separator, the auxiliary time of at least 20 minutes can be saved when each solid-liquid separation work cycle is carried out, an operator does not need to directly contact the solid phase or sediment, solid phase materials or separation products are not polluted, the device can also conveniently carry out on-site cleaning and on-site sterilization, and the device is particularly suitable for solid-liquid separation of suspension with small solid phase concentration, small solid phase particles, large liquid viscosity, small solid-liquid two-phase density difference and high cleanliness requirement.
Claims (9)
1. A shuttle valve discharge pipe type solid-liquid separator comprises a machine shell (46) with a feed channel (47) and a discharge channel and a rotary drum assembly arranged in the machine shell (46); wherein the feeding channel (47) is positioned at the lower part of the shell (46), the discharging channel comprises a clarifying liquid overflow channel (37) and a slag discharging channel, the clarifying liquid overflow channel (37) is positioned at the upper part of the shell (46), and the slag discharging channel is positioned at the bottom of the rotary drum assembly; the method is characterized in that: the rotary drum assembly comprises a main shaft (35), the upper part of the main shaft (35) is connected with a power system, the lower part of the main shaft (35) is connected with a liquid outlet head (23), the lower end of the liquid outlet head (23) is connected with the rotary drum, the shuttle valve assembly is in adherent fit in the rotary drum, and the main shaft (35), the liquid outlet head (23), the rotary drum and the shuttle valve assembly are driven by the power system to synchronously rotate; the upper end of the shuttle valve component is connected with a pneumatic device, after the solid-liquid separation is finished, the compressed air introduced by the pneumatic device pushes the shuttle valve component to move downwards along the inner wall of the rotary drum so as to remove the solid phase,
the shuttle valve assembly comprises a shuttle valve upper half (20), a shuttle valve lower half (14), a middle slide valve (43), a push rod (42), a distance mandrel (45), a first spring (15), an upper sealing ring (21) and a lower sealing ring (17), wherein the middle slide valve (43) is positioned between the shuttle valve upper half (20) and the shuttle valve lower half (14), the distance mandrel (45) penetrates through the shuttle valve upper half (20), the shuttle valve lower half (14) and the middle of the middle slide valve (43), one end of the push rod (42) is connected with the middle slide valve (43), the other end of the push rod (42) penetrates through the shuttle valve upper half (20) and is in contact with the lower end face of the liquid outlet head (23), the first spring (15) is positioned between the middle slide valve (43) and the shuttle valve lower half (14), and the shuttle valve upper half (20) forms a sealing structure with the inner wall of the rotary drum through the upper sealing ring (21.
2. The shuttle valve discharge tube type solid-liquid separator according to claim 1, wherein: the rotary drum is composed of a rotary drum cylindrical section (11) and a rotary drum conical section (7), the rotary drum cylindrical section (11) is connected with the rotary drum conical section (7) through a locking nut (8), and the lower half (14) of the shuttle valve is of a conical structure matched with the rotary drum conical section (7).
3. A shuttle valve discharge tube type solid-liquid separator as claimed in claim 1 or 2, wherein: the pneumatic device comprises a cross beam (30) and a first air inlet device arranged on the cross beam (30), a hollow pipe (26) with two open ends is movably arranged below the first air inlet device, the upper end of the hollow pipe (26) is abutted with the outlet of the first air inlet device, the lower end of the hollow pipe (26) is abutted with the upper end face of the shuttle valve assembly, and compressed air introduced by the first air inlet device enters the hollow pipe (26) and pushes the shuttle valve assembly to move downwards to be attached to the inner wall of the rotary drum so as to unload a solid phase.
4. The shuttle valve discharge tube type solid-liquid separator according to claim 3, wherein: the first air inlet device comprises an air inlet head (61), an air inlet channel (60) is arranged in the air inlet head (61), a pipe joint (59) is arranged at the inlet of the air inlet channel (60), an external air source is connected through the pipe joint (59), an inner cone sealing ring (58) is arranged at the outlet of the air inlet channel (60), and the inner cone sealing ring (58) is matched and sealed with an outer cone (57) at the upper end of the hollow pipe (26) so that compressed air can enter the hollow pipe (26).
5. The shuttle valve discharge tube type solid-liquid separator according to claim 4, wherein: the overflow channel (37) is arranged on the liquid outlet head (23), a third spring seat (39) and a third spring (40) are arranged in the liquid outlet head (23) near the overflow channel (37), a slide valve (41) perpendicular to the overflow channel (37) is arranged in the overflow channel (37), and the slide valve (41) is connected with the third spring (40); when the power system drives the rotary drum assembly to rotate, a slide valve (41) presses a third spring (40) under the action of centrifugal force to open the overflow channel (37).
6. The shuttle valve discharge tube type solid-liquid separator according to claim 5, wherein: the power system comprises a motor base (50) and a motor (18) arranged on the motor base (50), a motor shaft of the motor (18) is connected with a main shaft (35) through a driving belt wheel (22), a toothed belt (24) and a driven belt wheel (28), the main shaft (35) is installed in a bearing seat (31) through a pair of high-speed bearings (51), the bearing seat (31) can be clamped between an upper concave spherical support and a lower concave spherical support (34) in a swinging mode, and the concave spherical supports (34) are installed in the bearing seats (32); the main shaft (35), the belt wheel and the ball bearing (29) are sleeved on the hollow pipe (26), and a second spring (27) is sleeved on the hollow pipe (26) below the ball bearing (29); the pneumatic device further comprises a first air cylinder (56), the first air cylinder (56) is connected with the cross beam (30), the first air cylinder (56) drives the cross beam (30) to move downwards to drive the hollow pipe (26) to move downwards, and meanwhile, an inner ring of a ball bearing (29) on the hollow pipe (26) compresses a second spring (27) to further push the shuttle valve assembly to move downwards for a short distance, so that a closed space is formed between the liquid outlet head (23) and the shuttle valve assembly; compressed air enters the closed space through the hollow pipe (26) and pushes the shuttle valve assembly to move downwards along the inner wall of the rotary drum so as to remove solid phase.
7. The shuttle valve discharge tube type solid-liquid separator according to claim 6, wherein: and a second air inlet device (49) communicated with the rotary drum is arranged below the rotary drum, and the shuttle valve assembly is driven to move upwards and reset along the inner wall of the rotary drum through the second air inlet device (49).
8. The shuttle valve discharge tube type solid-liquid separator according to claim 7, wherein: an arched frame (6) is arranged below the rotary drum, the upper end of the arched frame (6) is opposite to the lower end of the rotary drum and is not contacted with the lower end of the rotary drum, the arched frame (6) is connected to the lower part of the machine shell (46) through a rotating shaft, the rotating shaft is connected with a second air cylinder (9), and the second air cylinder (9) drives the rotating shaft to rotate so as to drive the arched frame (6) to turn; the feeding channel (47) is positioned on the bow-shaped frame (6), and when the upper end of the bow-shaped frame (6) is opposite to the lower end of the rotary drum and the rotary drum rotates at high speed, the suspension can be added into the rotary drum from the feeding channel (47).
9. The shuttle valve discharge tube type solid-liquid separator according to claim 8, wherein: a hollow piston rod (5) arranged on the cylinder body (2) is arranged below the inner top wall of the arched frame (6), a slag discharge ball valve (1) is arranged at the lower end of the hollow piston rod (5), and a sealing ring (25) is arranged at the upper end of the hollow piston rod (5); when the upper end of the bow-shaped frame (6) is opposite to the lower end of the rotary drum without contacting, the upper end of the hollow piston rod (5) and the lower part of the bow-shaped frame (6) form a sealing structure together through a sealing ring (25).
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| CN201811158902.2A CN108939629B (en) | 2018-09-30 | 2018-09-30 | Shuttle valve unloading pipe type solid-liquid separator |
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| CN201811158902.2A CN108939629B (en) | 2018-09-30 | 2018-09-30 | Shuttle valve unloading pipe type solid-liquid separator |
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| CN108939629B true CN108939629B (en) | 2021-04-02 |
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| EP2153903A1 (en) * | 2002-04-12 | 2010-02-17 | Wagner Development, Inc. | Centrifuge with spherical rotor suspension |
| US7052451B2 (en) * | 2004-04-14 | 2006-05-30 | Wagner Development, Inc. | Conical piston solids discharge centrifugal separator |
| CA2473656A1 (en) * | 2004-08-16 | 2006-02-16 | Dave Houtman | Microcentrifuge plunger system |
| CN202387565U (en) * | 2011-12-02 | 2012-08-22 | 重庆江北机械有限责任公司 | Material accelerating device for horizontal spiral centrifuge |
| CN202667001U (en) * | 2012-06-27 | 2013-01-16 | 江苏赛德力制药机械制造有限公司 | Full-automatic pull bag feeding and discharging centrifugal machine |
| CN104338617A (en) * | 2013-08-01 | 2015-02-11 | 上海知正离心机有限公司 | On-line monitoring type tube centrifuge and separation technology thereof |
| CN203408798U (en) * | 2013-08-01 | 2014-01-29 | 上海知正离心机有限公司 | On-line controlled drum device for tube centrifuge |
| CN203380009U (en) * | 2013-08-09 | 2014-01-08 | 俞恺 | Vertical type three-phase combined centrifugal machine |
| CN204170860U (en) * | 2014-08-28 | 2015-02-25 | 周育岭 | A kind of tapered piston automatic discharge unit for tube centrifuge |
| CN106984446A (en) * | 2017-05-25 | 2017-07-28 | 合肥智慧殿投资管理有限公司 | A kind of clarification type tube centrifuge |
| CN207521172U (en) * | 2017-11-15 | 2018-06-22 | 安阳市源首生物药业有限责任公司 | A kind of tube centrifuge |
| CN107694241B (en) * | 2017-11-23 | 2019-07-23 | 宁波江北清纬环保科技有限公司 | A kind of waste gas dust-removal device |
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