A ring valve piston dregging centrifuge

Abstract

The present application relates to centrifuges, in particular to a ring valve piston slag discharge centrifuge, comprising a frame, a driving element and a shell arranged in the frame and on the top of the frame respectively; the main shaft of the driving element penetrates through the frame and extends to the top of the frame, the main shaft is located in the shell, and an outer rotating drum is fixedly installed on the main shaft, a fixed rotating drum is installed in the outer rotating drum; a vertical shaft with the top adhering to the bottom of the fixed rotating drum is arranged in the middle of the outer rotating drum, a movable inner rotating drum is slidingly installed on the vertical shaft, a sealed water cavity is formed between the lower surface of the movable inner rotating drum and the inner wall of the outer rotating drum, and an adjusting pipeline for adjusting the height of the sealed water cavity is arranged in the outer rotating drum; when the upper surface of the movable inner rotating drum adheres to the lower surface of the fixed rotating drum, a sealed centrifugal cavity is formed between the fixed rotating drum and the movable inner rotating drum. The present application can continuously inject sealing water, thereby avoiding the problem of affecting the stability of the centrifuge after the system leaks.

Description

Technical Field

[0001] This invention relates to centrifuges, and more specifically to a ring valve piston centrifuge for slag discharge. Background Technology

[0002] The ring valve piston centrifuge, also known as an automatic slag discharge disc separator, is a high-efficiency centrifugal separation device widely used in industries such as chemical, petroleum, pharmaceutical, and food processing. It is primarily used for liquid clarification and solid-liquid separation. Its core working principle is based on centrifugal force, which effectively separates different components in materials. When sludge accumulates to a certain amount in the sludge zone of the drum, a specific operating water system drives the piston to move, thereby opening the sludge discharge port and discharging the sludge outside the drum.

[0003] However, under current technological conditions, the operating water system of a ring valve piston centrifuge typically uses a metered supply method, meaning that the water supply automatically shuts off once the piston reaches the closed position. While this method ensures stable system operation to some extent, if a leak occurs at the sealing point of the operating water system, the piston may open abnormally, which will adversely affect the stability of the entire transmission system. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problem that leakage at the sealing position of the operating water system affects the stability of the transmission system in existing ring valve piston slag discharge centrifuges, and to provide a ring valve piston slag discharge centrifuge.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: A ring valve piston slag discharge centrifuge includes a frame, and a drive component and a housing respectively disposed inside and on top of the frame; The main shaft of the drive unit passes through the frame and extends to the top of the frame. The main shaft is located inside the housing, and an outer drum is fixedly installed on it. A fixed drum is installed inside the outer drum. The outer drum has a vertical shaft in the middle, the top of which fits against the bottom of the fixed drum. A movable inner drum is slidably mounted on the vertical shaft. A sealed water cavity is formed between the lower surface of the movable inner drum and the inner wall of the outer drum. An adjustment pipe for adjusting the height of the sealed water cavity is opened in the outer drum. When the upper surface of the movable inner drum is in contact with the lower surface of the fixed drum, a sealed centrifugal cavity is formed between the fixed drum and the movable inner drum; the outer drum has multiple slag discharge ports evenly distributed at the contact points between the upper surface of the movable inner drum and the lower surface of the fixed drum. The vertical shaft is hollow, and multiple liquid inlets communicating with the sealed centrifuge chamber are opened on the side of the vertical shaft; the fixed drum is provided with a feeding and discharging assembly in the middle, and the feeding pipe in the feeding and discharging assembly extends into the interior of the vertical shaft; The vertical shaft is equipped with multiple discs located inside a sealed centrifuge chamber.

[0006] Furthermore, the regulating pipeline includes a water distributor, as well as a sealing water channel and a pressure relief water channel that are opened inside the outer drum and communicate with the sealing water chamber; The outer drum is equipped with a pressure relief valve located on the pressure relief water channel; The water distributor is sleeved on the main shaft, and the fixed part of the water distributor is connected to the frame, while the movable part of the water distributor is connected to the outer drum. The sealing water outlet and the pressure relief water outlet of the water distributor are connected to the sealing water channel and the pressure relief water channel, respectively.

[0007] Furthermore, the bottom of the outer drum is provided with a pressure relief port that is connected to the pressure relief water channel.

[0008] Furthermore, the water distributor includes a base fixedly installed on the top of the frame, and the base is provided with a sealing water inlet channel and a pressure relief water inlet channel; The base is fitted with an outer sleeve, and the top of the outer sleeve is provided with an end cap, which is fixedly fitted onto the main shaft; The end cap is provided with multiple evenly distributed sealing water outlets, which connect the sealing water inlet channel and the sealing water channel. The outer casing is provided with multiple evenly distributed pressure relief water outlets, which connect the pressure relief water inlet channel and the pressure relief water channel.

[0009] Furthermore, the driving component includes a motor and a reducer located inside the frame and whose output end is connected to the main shaft, with a driven pulley fixedly mounted on the input shaft of the reducer; The motor is fixedly installed outside the frame, and the output shaft of the motor extends into the frame and is fixedly installed with a drive pulley; the drive pulley and the driven pulley are driven by a belt.

[0010] Furthermore, the feeding and discharging assembly includes the feeding pipe; The upper end of the feed pipe passes through the fixed drum and the outer shell in sequence; The fixed drum is provided with a pump chamber, and a centripetal pump is fixed outside the feed pipe inside the pump chamber. The inlet of the centripetal pump is connected to the inside of the pump chamber, and a drain pipe is provided at the outlet of the centripetal pump. The drain pipe is sleeved outside the feed pipe, and a gap is left between the inner wall of the drain pipe and the outer wall of the feed pipe. The fixed drum has a drain port on its side, and the drain pipe passes through the fixed drum and extends into the outer shell. The drain port is connected to the gap to form a drain channel.

[0011] Furthermore, the outer casing includes a housing and a top cover fixed to the top of the housing; The inner wall of the shell is provided with a flow guiding cone ring, the upper surface of which is lower than the slag discharge port, and the shell is provided with a solid residue discharge port.

[0012] Furthermore, a step is provided on the inner wall of the outer drum; The fixed drum is fixed to the step of the outer drum by a pressure ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The ring valve piston slag discharge centrifuge provided by the present invention adjusts the distance between the outer drum and the movable inner drum by setting an adjustment pipeline, so as to control whether the upper surface of the movable inner drum and the lower surface of the fixed drum are in contact. This enables the centrifuge to be used when the upper surface of the movable inner drum is in contact with the lower surface of the fixed drum, and to be used for slag discharge during separation. Moreover, the adjustment pipeline can ensure the sealing state when the upper surface of the movable inner drum and the lower surface of the fixed drum are in contact, avoiding the problem of affecting the stability of the centrifuge after leakage occurs in the sealed centrifuge chamber.

[0014] 2. The ring valve piston centrifuge for slag discharge provided by this invention, by setting up a water distributor, a sealing water channel, and a pressure relief water channel, allows sealing water and pressure relief water to enter the sealing water channel and pressure relief water channel respectively through the water distributor. During centrifugation, the sealing water enters the sealing water cavity to control the fit between the movable inner drum and the fixed drum, and the continuous injection of sealing water into the sealing water cavity ensures the stability of the fit between the movable inner drum and the fixed drum. When slag discharge is required, the pressure relief water enters the pressure relief water channel through the water distributor, and the pressure relief water opens the pressure relief valve, allowing the sealing water in the sealing water cavity to be discharged, separating the fixed drum from the movable inner drum, thus achieving slag discharge. The ring valve piston centrifuge for slag discharge provided by this invention can continuously supply a small amount of sealing water when the movable inner drum and the fixed drum are in contact, ensuring that the centrifugal sealing cavity will not be abnormally opened due to leakage during non-slag discharge periods.

[0015] 3. The ring valve piston slag discharge centrifuge provided by the present invention has a non-contact structure between the moving part and the fixed part of the water separator, and there are no seals, so there is no need for daily maintenance or replacement of seals. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure in which the upper surface of the movable inner drum and the lower surface of the fixed drum are attached according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure in an embodiment of the present invention, showing the separation of the upper surface of the movable inner drum from the lower surface of the fixed drum. Figure 3 This is a schematic diagram of the water distributor in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached diagram: 1-Frame, 2-Main shaft, 3-Outer drum, 4-Fixed drum, 5-Vertical shaft, 6-Modible inner drum, 7-Sealed water chamber, 8-Sealed centrifuge chamber, 9-Slag discharge port, 10-Liquid inlet, 11-Feed pipe, 12-Disc, 13-Water distributor, 14-Sealed water channel, 15-Pressure relief water channel, 16-Pressure relief valve, 17-Sealed water outlet, 18-Pressure relief water outlet, 19-Pressure relief port. 20-Base, 21-Sealing water inlet channel, 22-Pressure relief water inlet channel, 23-Outer jacket, 24-End cover, 25-Motor, 26-Reducer, 27-Driven pulley, 28-Driven pulley, 29-Belt, 30-Pump chamber, 31-Centrifugal pump, 32-Drain pipe, 33-Gap, 34-Drain port, 35-Drain channel, 36-Housing shell, 37-Top cover, 38-Guide cone ring, 39-Pressure ring. Detailed Implementation

[0018] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 and Figure 2 As shown, a ring valve piston slag discharge centrifuge includes a frame 1, and a drive component and a housing respectively disposed inside and on top of the frame 1; The main shaft 2 of the drive unit passes through the frame 1 and extends to the top of the frame 1. The main shaft 2 is located inside the housing, and an outer drum 3 is fixedly installed on it. A fixed drum 4 is installed inside the outer drum 3. The outer drum 3 has a vertical shaft 5 in the middle, the top of which is attached to the bottom of the fixed drum 4. A movable inner drum 6 is slidably installed on the vertical shaft 5. A sealed water cavity 7 is formed between the lower surface of the movable inner drum 6 and the inner wall of the outer drum 3. An adjustment pipe for adjusting the height of the sealed water cavity 7 is opened in the outer drum 3. When the upper surface of the movable inner drum 6 is in contact with the lower surface of the fixed drum 4, a sealed centrifugal cavity 8 is formed between the fixed drum 4 and the movable inner drum 6; the outer drum 3 has multiple slag discharge ports 9 evenly distributed at the contact points between the upper surface of the movable inner drum 6 and the lower surface of the fixed drum 4. The vertical shaft 5 is hollow, and multiple liquid inlets 10 communicating with the sealed centrifuge chamber 8 are opened on the side of the vertical shaft 5; the fixed drum 4 is provided with a feeding and discharging assembly in the middle, and the feeding pipe 11 in the feeding and discharging assembly extends into the interior of the vertical shaft 5. The vertical shaft 5 is equipped with multiple discs 12 located inside the sealed centrifuge chamber 8.

[0020] like Figure 1 and Figure 2As shown, the regulating pipeline includes a water distributor 13, a sealing water channel 14 and a pressure relief water channel 15 that are opened inside the outer drum 3 and communicate with the sealing water chamber 7; The outer drum 3 is equipped with a pressure relief valve 16 located on the pressure relief water channel 15; The water distributor 13 is mounted on the main shaft 2, and the fixed part of the water distributor 13 is connected to the frame 1, while the movable part of the water distributor 13 is connected to the outer drum 3. The sealing water outlet 17 and the pressure relief water outlet 18 of the water distributor 13 are connected to the sealing water channel 14 and the pressure relief water channel 15, respectively.

[0021] like Figure 1 and Figure 2 As shown, the bottom of the outer drum 3 is provided with a pressure relief port 19 that is connected to the pressure relief water channel 15.

[0022] like Figure 3 As shown, the water distributor 13 includes a base 20 fixedly installed on the top of the frame 1, and the base 20 is provided with a sealing water inlet channel 21 and a pressure relief water inlet channel 22. The outer sleeve 23 is fitted on the outside of the base 20, and the top of the outer sleeve 23 is provided with an end cap 24, which is fixedly fitted on the main shaft 2; The end cap 24 is provided with multiple evenly distributed sealing water outlets 17, which connect the sealing water inlet channel 21 and the sealing water channel 14. The outer casing 23 is provided with multiple evenly distributed pressure relief water outlets 18, which connect the pressure relief water inlet channel 22 and the pressure relief water channel 15.

[0023] like Figure 1 and Figure 2 As shown, the driving component includes a motor 25 and a reducer 26 located inside the frame 1 and whose output end is connected to the main shaft 2. A driven pulley 27 is fixedly mounted on the input shaft of the reducer 26. The motor 25 is fixedly installed outside the frame 1. The output shaft of the motor 25 extends into the frame 1 and is fixedly installed with the drive pulley 28. The drive pulley 28 and the driven pulley 27 are driven by a belt 29.

[0024] like Figure 1 and Figure 2 As shown, the feeding and discharging assembly includes a feed pipe 11; The upper end of the feed pipe 11 passes through the fixed drum 4 and the outer shell in sequence; A pump chamber 30 is provided inside the fixed drum 4. A centripetal pump 31 is fixed to the outside of the feed pipe 11 inside the pump chamber 30. The inlet 10 of the centripetal pump 31 is connected to the inside of the pump chamber 30. A drain pipe 32 is provided at the outlet of the centripetal pump 31. The drain pipe 32 is sleeved on the outside of the feed pipe 11, and a gap 33 is left between the inner wall of the drain pipe 32 and the outer wall of the feed pipe 11. A drain port 34 is provided on the side of the fixed drum 4. A drain pipe 32 passes through the fixed drum 4 and extends into the outer shell. The drain port 34 is connected with the gap 33 to form a drain channel 35.

[0025] like Figure 1 and Figure 2 As shown, the outer casing includes a housing 36 and a top cover 37 fixed to the top of the housing 36; The inner wall of the shell 36 is provided with a flow guiding cone ring 38, the upper surface of the flow guiding cone ring 38 is lower than the slag discharge port 9, and the shell 36 is provided with a solid residue discharge port.

[0026] like Figure 1 and Figure 2 As shown, steps are provided on the inner wall of the outer drum 3; The fixed drum 4 is fixed to the step of the outer drum 3 by the pressure ring 39.

[0027] The working method of the ring valve piston slag discharge centrifuge provided by the present invention is as follows: Start the motor 25. The motor 25 drives the reducer 26 to rotate through the belt 29, thereby causing the outer drum 3 and the movable inner drum 6 connected to the main shaft 2 to rotate. After the centrifuge reaches the set speed, water is injected into the sealed water chamber 7 through the sealed water inlet channel 21 and the sealed water channel 14. After the water enters the sealed water chamber 7, it moves towards the edge of the sealed water chamber 7 under the action of centrifugal force, thereby lifting the movable inner drum 6 upward and moving it to fit against the lower surface of the fixed drum 4. Reduce the amount of water injected into the sealing water chamber 7, and continuously inject water into the sealing water chamber 7 through the sealing water inlet channel 21 and the sealing water channel 14 to prevent leakage from damaging the overall condition and ensure sealing reliability; excess water is discharged through the space between the outer jacket 23 and the base 20, and this amount of water will not cause the pressure relief valve 16 to open. That is, a small amount of water will be discharged from the small hole on the lower end face of the drum through the pressure relief water channel 15.

[0028] During the high-speed rotation of the centrifuge, the material to be separated is added into the sealed centrifuge chamber 8 through the feed pipe 11 of the centrifugal pump 31. Due to the density difference of the material, under the action of centrifugal force, the denser material residue adheres to the wall and remains in the sealed centrifuge chamber 8, while the less dense liquid flows from between any two adjacent discs 12 to the pump chamber 30. The liquid is discharged from the discharge outlet through the centrifugal pump 31. When slag discharge is required, the sealing water is turned off, and pressure relief water (the water pressure of the pressure relief water is greater than the set pressure of the pressure relief valve 16) is injected into the pressure relief water channel 15 through the pressure relief water inlet channel 22, so that the pressure relief valve 16 is opened. After the pressure relief valve 16 is opened, the water in the sealing water chamber 7 is discharged through the pressure relief valve 16. After the sealing water is discharged, the lifting force below the movable inner drum 6 disappears. Under the action of its own weight and centrifugal force, the movable inner drum 6 moves downward, and the solid residue is discharged from the slag discharge port 9 located between the movable inner drum 6 and the fixed drum 4.

[0029] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A ring valve piston slag discharge centrifuge, characterized in that: Includes a frame (1), and a drive unit and a housing respectively disposed inside and on top of the frame (1); The main shaft (2) of the drive unit passes through the frame (1) and extends to the top of the frame (1). The main shaft (2) is located inside the outer shell, and an outer drum (3) is fixedly installed on it. A fixed drum (4) is installed inside the outer drum (3). The outer drum (3) is provided with a vertical shaft (5) in the middle, which is attached to the bottom of the fixed drum (4). A movable inner drum (6) is slidably installed on the vertical shaft (5). A sealed water cavity (7) is formed between the lower surface of the movable inner drum (6) and the inner wall of the outer drum (3). An adjustment pipe for adjusting the height of the sealed water cavity (7) is provided in the outer drum (3). When the upper surface of the movable inner drum (6) is in contact with the lower surface of the fixed drum (4), a sealed centrifugal cavity (8) is formed between the fixed drum (4) and the movable inner drum (6); the outer drum (3) has a plurality of slag discharge ports (9) evenly distributed at the contact points between the upper surface of the movable inner drum (6) and the lower surface of the fixed drum (4). The vertical shaft (5) is hollow, and multiple liquid inlets (10) communicating with the sealed centrifugal chamber (8) are opened on the side of the vertical shaft (5); the fixed drum (4) is provided with a feeding and discharging assembly in the middle, and the feeding pipe (11) in the feeding and discharging assembly extends into the interior of the vertical shaft (5); The vertical shaft (5) is provided with a plurality of discs (12) located in the sealed centrifuge chamber (8); The regulating pipeline includes a water distributor (13), a sealed water channel (14) and a pressure relief water channel (15) that are opened in the outer drum (3) and communicate with the sealed water chamber (7); The outer drum (3) is equipped with a pressure relief valve (16) located on the pressure relief water channel (15); The water distributor (13) is sleeved on the main shaft (2), and the fixed part of the water distributor (13) is connected to the frame (1), while the movable part of the water distributor (13) is connected to the outer drum (3). The sealing water outlet (17) and the pressure relief water outlet (18) of the water distributor (13) are respectively connected to the sealing water channel (14) and the pressure relief water channel (15); The bottom of the outer drum (3) is provided with a pressure relief port (19) that is connected to the pressure relief water channel (15); The water distributor (13) includes a base (20) fixedly installed on the top of the frame (1), and the base (20) is provided with a sealing water inlet channel (21) and a pressure relief water inlet channel (22); The base (20) is fitted with an outer sleeve (23), and the top of the outer sleeve (23) is provided with an end cap (24), which is fixedly fitted onto the main shaft (2); The end cap (24) is provided with a plurality of evenly distributed sealing water outlets (17), which connect the sealing water inlet channel (21) and the sealing water channel (14). The outer casing (23) is provided with multiple evenly distributed pressure relief water outlets (18), which connect the pressure relief water inlet channel (22) and the pressure relief water channel (15).

2. The ring valve piston slag discharge centrifuge according to claim 1, characterized in that: The drive unit includes a motor (25) and a reducer (26) located inside the frame (1) and whose output end is connected to the main shaft (2). A driven pulley (27) is fixedly installed on the input shaft of the reducer (26). The motor (25) is fixedly installed outside the frame (1). The output shaft of the motor (25) extends into the frame (1) and is fixedly installed with a drive pulley (28). The drive pulley (28) and the driven pulley (27) are driven by a belt (29).

3. The annular valve piston slag discharge centrifuge according to claim 1, characterized in that: The feeding and discharging assembly includes the feeding pipe (11); The upper end of the feed pipe (11) passes through the fixed drum (4) and the outer shell in sequence; The fixed drum (4) is provided with a pump chamber (30), and a centripetal pump (31) fixed to the outside of the feed pipe (11) is provided in the pump chamber (30). The inlet (10) of the centripetal pump (31) is connected to the inside of the pump chamber (30). A drain pipe (32) is provided at the outlet of the centripetal pump (31). The drain pipe (32) is sleeved on the outside of the feed pipe (11), and a gap (33) is left between the inner wall of the drain pipe (32) and the outer wall of the feed pipe (11). The fixed drum (4) has a drain port (34) on its side. The drain pipe (32) passes through the fixed drum (4) and extends into the shell. The drain port (34) and the gap (33) are connected to form a drain channel (35).

4. The annular valve piston centrifuge for slag discharge according to claim 1, characterized in that: The outer casing includes a housing (36) and a top cover (37) fixed to the top of the housing (36); The inner wall of the shell (36) is provided with a flow guiding cone ring (38), the upper surface of the flow guiding cone ring (38) is lower than the slag discharge port (9), and the shell (36) is provided with a solid residue discharge port.

5. The ring valve piston slag discharge centrifuge according to claim 1, characterized in that: The inner wall of the outer drum (3) is provided with steps; The fixed drum (4) is fixed to the step of the outer drum (3) by a pressure ring (39).

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