Ring valve piston deslagging centrifugal machine

Abstract

The invention relates to a centrifugal machine, in particular to a ring valve piston deslagging centrifugal machine which comprises a machine frame, a driving part and a shell, and the driving part and the shell are arranged in the machine frame and on the top of the machine frame respectively. A main shaft of the driving part penetrates through the rack and extends out of the top of the rack, the main shaft is located in the shell, an outer rotary drum is fixedly installed on the main shaft, and a fixed rotary drum is installed in the outer rotary drum; a vertical shaft with the top attached to the bottom of the fixed drum is arranged in the middle of the outer 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, and an adjusting pipeline used for adjusting the height of the sealed water cavity is arranged in the outer drum. When the upper surface of the movable inner rotary drum is attached to the lower surface of the fixed rotary drum, a sealed centrifugal cavity is formed between the fixed rotary drum and the movable inner rotary drum. The problem that the stability of the centrifugal machine is affected after leakage of a system is avoided by continuously injecting sealing water.

Description

Technical Field

[0001] The invention relates to a centrifuge, in particular to a ring valve piston slag discharge centrifuge. Background Art

[0002] The ring valve piston discharge centrifuge, also known as the automatic discharge disc separator, is a high-efficiency centrifugal separation equipment widely used in the chemical, petroleum, pharmaceutical, food and other industries. It is mainly used for liquid clarification and solid-liquid separation. Its core working principle is based on the action of centrifugal force, which can effectively separate the different components in the material. When the sediment accumulates to a certain amount in the sediment area of ​​the drum, the piston is driven to move through a specific operating water system, and then the discharge port is opened to discharge the sediment from the outside of the drum.

[0003] However, under current technical conditions, the operating water system of the ring valve piston slag discharge centrifuge usually adopts a quantitative addition method, that is, when the piston reaches the closed position, the closing water will be automatically closed. Although this method can ensure the stable operation of the system to a certain extent, if the sealing position of the operating water system leaks, the piston may open in an abnormal way, which will have an adverse effect on the stability of the entire transmission system. Summary of the invention

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

[0005] To solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0006] A ring valve piston slag discharge centrifuge comprises a frame, and a driving member and a housing respectively arranged inside and on the top of the frame;

[0007] The main shaft of the driving member passes through the frame and extends to the top of the frame. The main shaft is located inside the outer shell, and an outer drum is fixedly installed on the main shaft, and a fixed drum is installed inside the outer drum.

[0008] A vertical shaft is provided in the middle of the outer drum, the top of which is in contact with 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 adjusting pipeline for adjusting the height of the sealed water cavity is provided in the outer drum.

[0009] When the upper surface of the movable inner drum is in contact with the lower surface of the fixed drum, a sealed centrifugal chamber is formed between the fixed drum and the movable inner drum; the outer drum is provided with a plurality of slag discharge ports evenly distributed at the contact point between the upper surface of the movable inner drum and the lower surface of the fixed drum;

[0010] The vertical shaft is hollow, and a plurality of liquid inlets communicating with the sealed centrifugal chamber are provided on the side of the vertical shaft; a feed and discharge assembly is provided in the middle of the fixed drum, and a feed pipe in the feed and discharge assembly extends into the interior of the vertical shaft;

[0011] The vertical shaft is provided with a plurality of discs located in the sealed centrifugal chamber.

[0012] Furthermore, the regulating pipeline includes a water distributor, and a sealing water channel and a pressure relief water channel which are opened in the outer drum and communicate with the sealing water cavity;

[0013] A pressure relief valve located on the pressure relief water channel is provided in the outer drum;

[0014] The water distributor is sleeved on the main shaft, and the fixed part of the water distributor is connected to the frame, and the movable part of the water distributor is connected to the outer drum;

[0015] The sealing water outlet and the pressure relief water outlet of the water divider are communicated with the sealing water channel and the pressure relief water channel respectively.

[0016] Furthermore, a pressure relief port connected to the pressure relief water channel is provided at the bottom of the outer drum.

[0017] Furthermore, the water distributor comprises a base fixedly mounted on the top of the frame, and a sealing water inlet channel and a pressure relief water inlet channel are provided on the base;

[0018] The outer side of the base is provided with an outer sleeve, the top of the outer sleeve is provided with an end cover, and the end cover is fixedly sleeved on the main shaft;

[0019] The end cover is provided with a plurality of evenly distributed sealing water outlets, which connect the sealing water inlet channel with the sealing water channel;

[0020] The outer sleeve is provided with a plurality of evenly distributed pressure relief water outlets, and the pressure relief water outlets connect the pressure relief water inlet channel with the pressure relief water channel.

[0021] Furthermore, the driving member includes a motor and a reducer located inside the frame and having an output end connected to the main shaft, and a driven pulley is fixedly mounted on the input shaft of the reducer;

[0022] 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 driving pulley; the driving pulley and the driven pulley are driven by a belt.

[0023] Further, the feed and discharge assembly includes the feed pipe;

[0024] The upper end of the feed pipe passes through the fixed drum and the outer shell in sequence;

[0025] A pump chamber is provided in the fixed drum, and a centripetal pump fixed to the outside of the feed pipe is provided in the pump chamber, the liquid inlet of the centripetal pump is connected to the inside of the pump chamber, and a discharge pipe is provided at the liquid outlet of the centripetal pump, and the discharge pipe is sleeved on the outside of the feed pipe, and a gap is left between the inner wall of the discharge pipe and the outer wall of the feed pipe;

[0026] A drainage port is provided on the side of the fixed drum, the drainage pipe penetrates the fixed drum and extends into the interior of the shell, and the drainage port is connected with the gap to form a drainage channel.

[0027] Furthermore, the housing includes a shell and a top cover fixed on the shell;

[0028] A guide cone ring is arranged on the inner side wall of the shell, the upper surface of the guide cone ring is lower than the slag discharge port, and a solid residue discharge port is opened on the shell.

[0029] Furthermore, a step is provided on the inner side wall of the outer drum;

[0030] The fixed drum is fixed on the step of the outer drum through a pressure ring.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 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 to control whether the upper surface of the movable inner drum fits with the lower surface of the fixed drum, so as to realize the functions of centrifugation when the upper surface of the movable inner drum fits with the lower surface of the fixed drum, and slag discharge during separation; and, the sealing state when the upper surface of the movable inner drum fits with the lower surface of the fixed drum can be ensured by adjusting the pipeline, thereby avoiding the problem of affecting the stability of the centrifuge after leakage occurs in the sealed centrifugal chamber.

[0033] 2. The ring-valve piston slag discharge centrifuge provided by the present invention is provided with a water divider, a sealing water channel and a pressure relief water channel, and the sealing water and the pressure relief water enter the sealing water channel and the pressure relief water channel respectively through the water divider; during centrifugation, the sealing water enters the sealing water chamber to control the fit between the movable inner drum and the fixed drum, and at the same time, the stability of the fit between the movable inner drum and the fixed drum is guaranteed by continuously injecting sealing water into the sealing water chamber; when slag discharge is required, the pressure relief water enters the pressure relief water channel through the water divider, and the pressure relief water opens the pressure relief valve to discharge the sealing water in the sealing water chamber, separate the fixed drum from the movable inner drum, and realize slag discharge; the ring-valve piston slag discharge centrifuge provided by the present invention can continuously pass a small amount of sealing water when the movable inner drum is in fit with the fixed drum, to ensure that the centrifugal sealing chamber will not be abnormally opened due to leakage during the non-slag discharge period.

[0034] 3. In the ring valve piston slag discharge centrifuge provided by the present invention, the movable part and the fixed part of the water separator are of a non-contact structure, there is no sealing component, and no daily maintenance or replacement of the sealing component is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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 to each other in an embodiment of the present invention;

[0036] Figure 2 It is a schematic diagram of the structure in which the upper surface of the movable inner drum is separated from the lower surface of the fixed drum according to an embodiment of the present invention;

[0037] Figure 3 Schematic diagram of the structure of the water separator in the embodiment of the present invention.

[0038] Description of the accompanying drawings: 1-frame, 2-spindle, 3-outer drum, 4-fixed drum, 5-vertical shaft, 6-movable inner drum, 7-sealed water chamber, 8-sealed centrifugal 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-sealed water inlet channel, 22-pressure relief water inlet channel, 23-jacket, 24-end cover, 25-motor-26-reducer, 27-driven pulley, 28-driving pulley, 29-belt, 30-pump chamber, 31-centripetal pump, 32-drain pipe, 33-gap, 34-drain port, 35-drain channel, 36-housing, 37-top cover, 38-guide cone ring, 39-pressure ring. DETAILED DESCRIPTION

[0039] The technical solutions in the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 and Figure 2 As shown, a ring valve piston slag discharge centrifuge comprises a frame 1, and a driving member and a housing respectively arranged inside and on the top of the frame 1;

[0041] The main shaft 2 of the driving member 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 the main shaft 2. A fixed drum 4 is installed inside the outer drum 3.

[0042] A vertical shaft 5 is provided in the middle of the outer drum 3, the top of which is in contact with the bottom of the fixed drum 4. A movable inner drum 6 is slidably mounted 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 adjusting pipeline for adjusting the height of the sealed water cavity 7 is provided in the outer drum 3.

[0043] 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 chamber 8 is formed between the fixed drum 4 and the movable inner drum 6; the outer drum 3 is provided with a plurality of slag discharge ports 9 evenly distributed at the contact point between the upper surface of the movable inner drum 6 and the lower surface of the fixed drum 4;

[0044] The vertical shaft 5 is hollow, and a plurality of liquid inlets 10 communicating with the sealed centrifugal chamber 8 are provided on the side of the vertical shaft 5; a feed and discharge assembly is provided in the middle of the fixed drum 4, and a feed pipe 11 in the feed and discharge assembly extends into the interior of the vertical shaft 5;

[0045] A plurality of discs 12 located in the sealed centrifugal chamber 8 are disposed on the vertical shaft 5 .

[0046] like Figure 1 and Figure 2 As shown, the regulating pipeline includes a water distributor 13, and a sealing water channel 14 and a pressure relief water channel 15 which are opened in the outer drum 3 and communicate with the sealing water chamber 7;

[0047] A pressure relief valve 16 is provided in the outer drum 3 and is located on the pressure relief water channel 15;

[0048] The water divider 13 is sleeved on the main shaft 2, and the fixed part of the water divider 13 is connected to the frame 1, and the movable part of the water divider 13 is connected to the outer drum 3;

[0049] The sealing water outlet 17 and the pressure relief water outlet 18 of the water distributor 13 are communicated with the sealing water channel 14 and the pressure relief water channel 15 respectively.

[0050] like Figure 1 and Figure 2 As shown, a pressure relief port 19 connected to the pressure relief water channel 15 is provided at the bottom of the outer drum 3 .

[0051] like Figure 3 As shown, the water distributor 13 includes a base 20 fixedly mounted on the top of the frame 1, and a sealing water inlet channel 21 and a pressure relief water inlet channel 22 are opened on the base 20;

[0052] The outer side of the base 20 is provided with a jacket 23, the top of the jacket 23 is provided with an end cover 24, and the end cover 24 is fixedly sleeved on the main shaft 2;

[0053] The end cover 24 is provided with a plurality of evenly distributed sealing water outlets 17, and the sealing water outlets 17 connect the sealing water inlet channel 21 with the sealing water channel 14;

[0054] The outer sleeve 23 is provided with a plurality of evenly distributed pressure relief water outlets 18 , and the pressure relief water outlets 18 connect the pressure relief water inlet channel 22 with the pressure relief water channel 15 .

[0055] like Figure 1 and Figure 2 As shown, the driving member includes a motor 25, and a reducer 26 located inside the frame 1 and connected to the main shaft 2 at its output end, and a driven pulley 27 is fixedly mounted on the input shaft of the reducer 26;

[0056] The motor 25 is fixedly installed outside the frame 1 , and the output shaft of the motor 25 extends into the frame 1 and is fixedly installed with a driving pulley 28 ; the driving pulley 28 and the driven pulley 27 are driven by a belt 29 .

[0057] like Figure 1 and Figure 2 As shown, the feed and discharge assembly includes a feed pipe 11;

[0058] The upper end of the feed pipe 11 passes through the fixed drum 4 and the outer shell in sequence;

[0059] A pump chamber 30 is provided in the fixed drum 4, and a centripetal pump 31 fixed to the outside of the feed pipe 11 is provided in the pump chamber 30, and a liquid inlet 10 of the centripetal pump 31 is communicated with the inside of the pump chamber 30, and a discharge pipe 32 is provided at the liquid outlet of the centripetal pump 31, and the discharge pipe 32 is sleeved on the outside of the feed pipe 11, and a gap 33 is left between the inner wall of the discharge pipe 32 and the outer wall of the feed pipe 11;

[0060] A drainage port 34 is provided on the side of the fixed drum 4 . A drainage pipe 32 passes through the fixed drum 4 and extends into the interior of the housing. The drainage port 34 is connected to the gap 33 to form a drainage channel 35 .

[0061] like Figure 1 and Figure 2 As shown, the housing includes a shell 36 and a top cover 37 fixed on the shell 36;

[0062] A guide cone ring 38 is provided on the inner side wall of the shell 36 , the upper surface of the guide cone ring 38 is lower than the slag discharge port 9 , and a solid residue discharge port is opened on the shell 36 .

[0063] like Figure 1 and Figure 2 As shown, a step is provided on the inner side wall of the outer drum 3;

[0064] The fixed drum 4 is fixed on the step of the outer drum 3 through a pressure ring 39 .

[0065] The working method of the ring valve piston slag removal centrifuge provided by the present invention is:

[0066] The motor 25 is started, and the motor 25 drives the reducer 26 to rotate through the belt 29, thereby rotating the outer drum 3 and the movable inner drum 6 connected to the main shaft 2;

[0067] 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 toward the edge of the sealed water chamber 7 under the action of centrifugal force, thereby lifting the movable inner drum 6 upward to fit the lower surface of the fixed drum 4.

[0068] Reduce the amount of water injected into the sealed water chamber 7, and continue to inject water into the sealed water chamber 7 through the sealed water inlet channel 21 and the sealed water channel 14 to prevent leakage from damaging the overall state and ensure the sealing reliability; the excess water is discharged through the outer cover 23 and the base 20, and this amount of water will not open the pressure relief valve 16. That is, a small amount of water will be discharged from the small hole on the lower end surface of the drum through the pressure relief water channel 15.

[0069] During the high-speed rotation of the centrifuge, the material to be separated is added into the sealed centrifugal chamber 8 through the centrifugal pump 31 feed pipe 11. Due to the density difference of the materials, under the action of centrifugal force, the material residue with high density adheres to the wall and remains in the sealed centrifugal chamber 8, and the liquid with low density flows from between any two adjacent discs 12 to the pump chamber 30, and the liquid is discharged from the discharge outlet through the centrifugal pump 31;

[0070] When slag discharge is required, the sealing water is closed, 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 to open the pressure relief valve 16. 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 between the movable inner drum 6 and the fixed drum 4.

[0071] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A ring valve piston slag discharge centrifuge, characterized in that: It comprises a frame (1), and a driving component and a housing respectively arranged inside and on the top of the frame (1); The main shaft (2) of the driving member 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 mounted on the main shaft, and a fixed drum (4) is mounted inside the outer drum (3); A vertical shaft (5) is provided in the middle of the outer drum (3) with its top in contact with the bottom of the fixed drum (4); a movable inner drum (6) is slidably mounted on the vertical shaft (5); a sealed water chamber (7) is formed between the lower surface of the movable inner drum (6) and the inner wall of the outer drum (3); and an adjusting pipeline for adjusting the height of the sealed water chamber (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 chamber (8) is formed between the fixed drum (4) and the movable inner drum (6); the outer drum (3) is provided with a plurality of slag discharge ports (9) evenly distributed at the contact point 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 a plurality of liquid inlets (10) communicating with the sealed centrifugal chamber (8) are provided on the side of the vertical shaft (5); a feed and discharge assembly is provided in the middle of the fixed drum (4), and a feed pipe (11) in the feed and discharge 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 centrifugal chamber (8).

2. The ring valve piston slag discharge centrifuge according to claim 1, characterized in that: The regulating pipeline comprises a water distributor (13), and a sealing water channel (14) and a pressure relief water channel (15) which are opened in the outer drum (3) and communicate with the sealing water chamber (7); The outer drum (3) is provided 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), and 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).

3. The ring valve piston slag discharge centrifuge according to claim 2, characterized in that: A pressure relief port (19) connected to the pressure relief water channel (15) is provided at the bottom of the outer drum (3).

4. The ring valve piston slag discharge centrifuge according to claim 2, characterized in that: The water distributor (13) comprises a base (20) fixedly mounted on the top of the frame (1), and a sealing water inlet channel (21) and a pressure relief water inlet channel (22) are provided on the base (20); The outer side of the base (20) is provided with an outer sleeve (23), the top of the outer sleeve (23) is provided with an end cover (24), and the end cover (24) is fixedly sleeved on the main shaft (2); The end cover (24) is provided with a plurality of evenly distributed sealing water outlets (17), and the sealing water outlets (17) connect the sealing water inlet channel (21) with the sealing water channel (14); The outer jacket (23) is provided with a plurality of evenly distributed pressure relief water outlets (18), and the pressure relief water outlets (18) connect the pressure relief water inlet channel (22) with the pressure relief water channel (15).

5. The ring valve piston slag discharge centrifuge according to claim 1, characterized in that: The driving member comprises a motor (25) and a reducer (26) located inside the frame (1) and having an output end connected to the main shaft (2), and a driven pulley (27) is fixedly mounted on the input shaft of the reducer (26); The motor (25) is fixedly mounted on the outside of the frame (1); the output shaft of the motor (25) extends into the inside of the frame (1) and is fixedly mounted with a driving pulley (28); the driving pulley (28) and the driven pulley (27) are driven by a belt (29).

6. The ring valve piston slag discharge centrifuge according to claim 1, characterized in that: The feed and discharge assembly comprises the 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 in the fixed drum (4), a centripetal pump (31) fixed to the outside of the feed pipe (11) is provided in the pump chamber (30), a liquid inlet (10) of the centripetal pump (31) is communicated with the inside of the pump chamber (30), a liquid discharge pipe (32) is provided at the liquid outlet of the centripetal pump (31), the liquid discharge pipe (32) is sleeved on the outside of the feed pipe (11), and a gap (33) is left between the inner wall of the liquid discharge pipe (32) and the outer wall of the feed pipe (11); A liquid discharge port (34) is provided on the side of the fixed drum (4), the liquid discharge pipe (32) penetrates the fixed drum (4) and extends into the interior of the shell, and the liquid discharge port (34) is connected to the gap (33) to form a liquid discharge channel (35).

7. The ring valve piston slag discharge centrifuge according to claim 1, characterized in that: The housing comprises a shell (36) and a top cover (37) fixed on the top of the shell (36); A guide cone ring (38) is provided on the inner side wall of the shell (36), the upper surface of the guide cone ring (38) is lower than the slag discharge port (9), and a solid residue discharge port is opened on the shell (36).

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

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