Feeding device of centrifugal machine

Abstract

The utility model discloses a centrifugal machine feeding device which comprises a feeding assembly, the feeding assembly is fixedly connected to the lower end of a thickener, the discharging end of the feeding assembly is connected with a feeding pipe, the tail end of the feeding pipe is connected with a centrifugal machine, and the feeding assembly comprises a stirring part and a discharging valve part. The upper end of the stirring part is connected with a thickener, at least one emptying valve part is arranged on the circumferential surface of the upper end side of the stirring part, and the emptying valve part is connected with a feeding pipe. The feeding device of the centrifugal machine is excellent in anti-blocking performance, accurate in solid content control and easy and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifuge feeding equipment technical field, and specifically is a centrifuge feeding device. BACKGROUND

[0002] Continuous centrifuges are widely used in chemical process arrangements, and their main function is to separate solids from liquids through centrifugal force. However, to meet the feeding requirements of centrifuges, static thickeners are usually configured upstream. Static thickeners use the difference in specific gravity between solids and liquids in the suspension to make solids settle by natural sedimentation, and liquid flows away through an overflow pipe. Although this design can pretreat the suspension to some extent, it has several problems in actual application.

[0003] First, the bottom of the static thickener is prone to blockage. Since solids settle at the bottom of the thickener, the discharge hole at the bottom often becomes blocked, preventing the material from being normally transported to the centrifuge and affecting the continuity and stability of the entire separation process.

[0004] Second, the solid content of the suspension inside the thickener gradually decreases from the bottom upwards. Centrifuges such as piston pusher centrifuges or screw filter centrifuges have high requirements for the solid content of the feed suspension, usually requiring a solid content of no less than 30%. However, in actual operation, users usually discharge into the centrifuge when the solid content is about 30% higher to avoid blockage of the feeding pipe. After a short period of separation, the solid content of the suspension in the thickener will quickly drop to 30%, affecting the continuous operation of the centrifuge and the realization of its production capacity.

[0005] To solve the above problems, using an anti-clogging feeding valve becomes an effective improvement. The anti-clogging feeding valve can discharge into the centrifuge when the solid content in the thickener reaches 50% or even higher, significantly increasing the solid content of the feed and ensuring the long-term stable operation of the centrifuge. This improvement not only improves the separation effect and production efficiency of the centrifuge, but also reduces downtime and maintenance time caused by blockage.

[0006] In summary, although the traditional static thickener meets the feeding requirements of the centrifuge to some extent, its easy blockage and difficulty in controlling the solid content seriously affect the continuous operation of the centrifuge and the realization of its production capacity. By introducing an anti-clogging feeding valve (a centrifuge feeding device), these problems can be effectively solved, significantly improving the operational stability and overall production efficiency of the centrifuge. SUMMARY

[0007] To address the above deficiencies in the prior art, the utility model aims to provide a centrifuge feeding device with excellent anti-clogging performance, precise solid content control, and simple operation.

[0008] The utility model discloses a centrifuge feeding device, including feeding subassembly, the feeding subassembly fixedly connected at the lower extreme of thickener, the discharge end of feeding subassembly is connected with feeding pipe, the feeding pipe end is connected with centrifuge, uses, first thickener carries out the preliminary concentration treatment to raw material, and the concentrated material is introduced into the feeding pipe through feeding subassembly, and the material is delivered to centrifuge through feeding pipe and carries out separation treatment, the feeding subassembly includes stirring portion and discharge valve portion, the upper end of stirring portion is connected with thickener, the upper end circumferential side of stirring portion is provided with at least one discharge valve portion, the discharge valve portion is connected with feeding pipe, in the utility model, thickener first enters stirring portion after the concentration of material, through ceaseless stirring, make the material have sustained flowability, avoid depositing and causing the feeding device to be blocked to form the agglomerate, when needing to discharge material, discharge valve portion is opened from the closed state to make the material can flow through discharge valve portion and enter feeding pipe, and then by feeding pipe enters centrifuge and carries out centrifugal operation.

[0009] In one embodiment, the stirring portion includes a motor, a speed reducer, a shaft coupling, a stirring shaft, a stirring paddle, a stirring shell, and an outer sleeve. The motor is connected to the speed reducer. The speed reducer is fixedly connected to the outer sleeve. The outer sleeve is rotatably connected to the shaft coupling. The shaft coupling is connected to the output end of the speed reducer. The shaft coupling is fixedly connected to the stirring shaft. The outer sleeve is fixedly connected to the stirring shell. The stirring shaft is fixedly connected to the stirring paddle. The stirring shell is connected to the thickener.

[0010] In one embodiment, the discharge valve portion includes a valve sleeve, a connecting body, an end cover plate, a sealing element, an actuator, a rotating shaft, a valve plate, and a valve piece. The outer sleeve is fixedly connected to the connecting body. The valve sleeve is connected to the connecting body. The valve sleeve is fixedly connected to the connecting body. The outer wall of the lower end of the valve sleeve is fixedly connected to the discharge pipe. The discharge pipe is connected to the feeding pipe. The other end of the valve sleeve is fixedly connected to the end cover plate. The end cover plate is fixedly connected to the actuator. The actuator is connected to the rotating shaft. The rotating shaft is rotatably connected to the valve sleeve. The one end of the rotating shaft inside the valve sleeve is rotatably connected to the middle of the connecting body. The end cover plate is connected to the rotating shaft. The connecting body is connected to the valve plate. The valve plate is connected to the valve piece. The valve piece is connected to the connecting body. The first discharge channel is connected to the connecting body. The second discharge channel is connected to the valve plate and the valve piece.

[0011] One of the embodiments, the lower end of the stirring shell middle fixedly connected with the shaft sleeve, the stirring shaft is rotatably connected in the shaft sleeve, the shaft sleeve is provided with two groups of annular grooves, the first sealing sleeve is fixedly connected in the annular groove, the first sealing sleeve is sleeved and connected on the stirring shaft.

[0012] One of the embodiments, the outer sleeve shell is fixedly connected with the isolation plate, the isolation plate is fixedly connected with the bearing sleeve in the middle, the roller bearing is fixedly connected in the bearing sleeve, the stirring shaft is fixedly connected in the inner ring of the roller bearing, the second sealing sleeve is fixedly connected in the bearing sleeve above the roller bearing, the second sealing sleeve is sleeved and connected on the stirring shaft, the overflow pipe is fixedly connected on one side of the lower end of the isolation plate, the other end of the overflow pipe penetrates to the outside of the outer sleeve shell.

[0013] One of the embodiments, the outer side wall of the valve sleeve shell upper end is fixedly connected with the outer joint, the outer joint is threadedly connected with the plug.

[0014] One of the embodiments, the valve plate is made of corrosion-resistant non-metallic material and is fixed on the valve plate by screws, the positioning pin is fixedly connected on the connecting block on one side of the first discharge channel, and the positioning pin is movably connected in the second discharge channel.

[0015] The utility model discloses the beneficial effect:

[0016] 1, the anti-blocking performance is improved significantly: the problem of the bottom discharge hole of the traditional static thickener being easy to block is effectively solved.

[0017] 2, the control solid content is accurate and stable: the anti-blocking feeding valve can discharge into the centrifuge when the solid content in the thickener reaches 50% or even higher, ensuring that the solid content of the feed suspension of the centrifuge always maintains a high level (more than 30%), significantly improving the separation efficiency and effect of the centrifuge;

[0018] 3, prolong the continuous operation time: due to the efficient feeding control of the anti-blocking feeding valve, the centrifuge can be operated stably for a long time, avoiding frequent shutdown adjustment caused by the solid content falling below 30%, significantly improving the continuous operation capacity and production capacity of the production line;

[0019] 4, reduce equipment wear and maintenance: through the application of the anti-blocking feeding valve, the friction and impact of the material in the transmission process are reduced, the equipment wear rate is reduced, the service life of the centrifuge and the thickener is prolonged, and the equipment maintenance frequency and cost are reduced;

[0020] 5. Improve production efficiency: the improved design of the utility model simplifies the operation process, reduces the workload of the operator and the possibility of operation failure, improves the production efficiency and safety of the whole system;

[0021] 6. Wide adaptability: the design of the utility model is applicable to various types of continuous centrifuges, including piston pushing centrifuges and screw filter centrifuges, and can meet the needs of different industries for efficient solid-liquid separation, and has wide application prospect;

[0022] In summary, the utility model introduces the anti-blocking feeding valve, which improves the feeding efficiency and stability of the centrifuge, significantly improves the shortcomings of the traditional thickener in practical application, and has significant practical value and economic benefit. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall connection structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the feeding assembly structure of the utility model;

[0025] Figure 3 It is Figure 2 It is a schematic diagram of the detail structure of A1 part;

[0026] Figure 4 It is a schematic diagram of the partial section structure of the feeding valve of the utility model;

[0027] Figure 5 It is a position structure diagram of the valve plate and the valve plate in the open state (left in the figure) and the closed state (right in the figure);

[0028] Figure 6 It is a schematic diagram of the disassembly structure of the valve plate and the connecting body.

[0029] In the figure: 1 feeding assembly, 2 thickener, 3 feeding pipe, 4 centrifuge, 101 motor, 102 speed reducer, 103 coupling, 104 stirring shaft, 105 stirring paddle, 106 stirring shell, 107 outer sleeve, 108 shaft sleeve, 109 first sealing sleeve, 1010 isolation plate, 1011 bearing sleeve, 1012 roller bearing, 1013 second sealing sleeve, 1014 overflow pipe, 201 valve sleeve, 202 connecting body, 203 end cover plate, 204 sealing element, 205 actuator, 206 rotating shaft, 207 valve plate, 208 valve plate, 209 discharge pipe, 2010 first discharge channel, 2011 second discharge channel, 2012 external connector, 2013 positioning pin. DETAILED DESCRIPTION

[0030] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work under the premise that the scope of the present application belongs to the protection range of the present application.

[0031] Please refer to Figures 1-6 A centrifuge feeding device, comprising a feeding assembly 1, the feeding assembly 1 is fixedly connected to the lower end of the thickener 2, the discharge end of the feeding assembly 1 is connected with the feeding pipe 3, the end of the feeding pipe 3 is connected with the centrifuge 4, in use, firstly, the thickener 2 performs preliminary concentration treatment on the original material, the concentrated material is introduced into the feeding pipe 3 through the feeding assembly 1, and the material is transported to the centrifuge 4 through the feeding pipe 3 for separation treatment; the feeding assembly 1 comprises a stirring part and a discharge valve part, the upper end of the stirring part is connected with the thickener 2, at least one discharge valve part is arranged on the circumferential side of the upper end of the stirring part, and the discharge valve part is connected with the feeding pipe 3; in the present application, the concentrated material is firstly introduced into the stirring part by the thickener 2, the material has continuous flowability by continuous stirring, and the feeding device is prevented from being blocked due to deposition and caking; when the material needs to be discharged, the discharge valve part is opened from the closed state, so that the material can flow through the discharge valve part into the feeding pipe 3, and then into the centrifuge 4 through the feeding pipe 3 for centrifugal operation.

[0032] In one of the embodiments, the stirring part comprises a motor 101, a speed reducer 102, a shaft coupling 103, a stirring shaft 104, a stirring paddle 105, a stirring shell 106 and an outer sleeve 107, the upper end of the motor 101 is connected with the speed reducer 102, the upper end of the speed reducer 102 is fixedly connected with the outer sleeve 107, the shaft coupling 103 is rotatably connected in the outer sleeve 107, the shaft coupling 103 is connected with the output end of the speed reducer 102, the other end of the shaft coupling 103 is fixedly connected with the stirring shaft 104, the upper end of the outer sleeve 107 is fixedly connected with the stirring shell 106, the upper end of the stirring shaft 104 penetrates into the stirring shell 106 and is fixedly connected with the stirring paddle 105, the stirring paddle 105 is rotatably connected in the stirring shell 106, and the upper end of the stirring shell 106 is connected with the thickener 2.

[0033] 1, power transmission:

[0034] The motor 101 is started to generate rotary power;

[0035] The power is decelerated and the torque is increased by the speed reducer 102, and is transmitted to the shaft coupling 103;

[0036] The shaft coupling 103 transmits the power to the stirring shaft 104.

[0037] 2. Stirring process:

[0038] The stirring shaft 104 rotates to drive the stirring paddle 105 to rotate in the stirring shell 106.

[0039] The flow generated by the rotation of the stirring paddle 105 uniformly mixes the material in the stirring shell 106, maintaining the fluidity of the material.

[0040] In one embodiment, the lower middle of the stirring shell 106 is fixedly connected with a shaft sleeve 108, the stirring shaft 104 is rotatably connected in the shaft sleeve 108, two groups of annular grooves are formed in the shaft sleeve 108, and the first sealing sleeve 109 is fixedly connected in the annular groove, and the first sealing sleeve 109 is sleeved and connected on the stirring shaft 104. In this embodiment, the shaft sleeve 108 and the first sealing sleeve 109 form a sealed structure to prevent the material from leaking from the stirring shell 106 into the outer shell 107.

[0041] In one embodiment, the outer shell 107 is fixedly connected with a partition plate 1010, the partition plate 1010 is fixedly connected with a bearing sleeve 1011 in the middle, the roller bearing 1012 is fixedly connected in the bearing sleeve 1011, the stirring shaft 104 is fixedly connected in the roller bearing 1012, the second sealing sleeve 1013 is fixedly connected in the bearing sleeve 1011 above the roller bearing 1012, the second sealing sleeve 1013 is sleeved and connected on the stirring shaft 104, the overflow pipe 1014 is fixedly connected on one side of the lower end of the partition plate 1010, and the other end of the overflow pipe 1014 penetrates to the outside of the outer shell 107. When the first sealing sleeve 109 is aged, corroded by foreign matter, damaged by friction, or other factors that cannot guarantee its sealing performance, the material will leak into the outer shell 107 under pressure at this time. At this time, the leakage liquid can be intercepted through the partition plate 1010, and a second sealing structure is formed by the bearing sleeve 1011 and the second sealing sleeve 1013 to prevent the leakage liquid from flowing down to the speed reducer 102, and the roller bearing 1012 in the bearing sleeve 1011 allows the rotating shaft 206 to rotate relatively and improves the stability of the rotating shaft 206. The intercepted leakage liquid is guided to the outside of the outer shell through the overflow pipe 1014, which is convenient for processing and discharge, avoiding the erosion and pollution of internal parts by liquid.

[0042] In one embodiment, the discharge valve part includes a valve sleeve shell 201, a connecting body 202, an end cover plate 203, a sealing element 204, an actuator 205, a rotating shaft 206, a valve plate 207, and a valve piece 208. The outer peripheral side of the outer sleeve shell 107 is fixedly connected with the connecting body 202. The valve sleeve shell 201 is sleeved and connected at one end of the connecting body 202 and is sealingly fixed with the connecting body 202. The outer side wall of the lower end of the valve sleeve shell 201 is fixedly connected with a discharge pipe 209, which is connected with the feeding pipe 3. The other end of the valve sleeve shell 201 is fixedly connected with the end cover plate 203. The outer side of the end cover plate 203 is fixedly connected with the actuator 205. The actuator 205 is connected with the rotating shaft 206. The rotating shaft 206 is rotatably connected in the valve sleeve shell 201 after penetrating through the end cover plate 203. One end of the rotating shaft 206 in the valve sleeve shell 201 is rotatably connected in the middle part of the connecting body 202. The sealing element 204 is connected between the end cover plate 203 and the rotating shaft 206. The valve plate 207 is fixedly connected on the rotating shaft 206 at one side of the connecting body 202. The valve piece 208 is fixedly connected on the valve plate 207 facing the connecting body 202. The valve piece 208 is in contact with the connecting body 202. The first discharge channel 2010 is penetrated through the connecting body 202. The second discharge channel 2011 is provided on the valve plate 207 and the valve piece 208. The second discharge channel 2011 is opposite or staggered with the first discharge channel 2010. In this embodiment, the specific working principle is as follows:

[0043] 1. Normal closed state:

[0044] The actuator 205 rotates the valve plate 207 and the valve piece 208 to the closed position through the rotating shaft 206. At this time, the first discharge channel 2010 and the second discharge channel 2011 are in a staggered state, so that the material cannot flow into the valve sleeve shell 201.

[0045] The sealing element 204 ensures the sealing between the end cover plate 203 and the rotating shaft 206 to prevent material leakage.

[0046] 2. Open state:

[0047] The actuator 205 drives the rotating shaft 206 to rotate, so that the valve plate 207 and the valve piece 208 are rotated to the open position. At this time, the second discharge channel 2011 is aligned with the first discharge channel 2010, and the material can flow smoothly into the valve sleeve shell 201 and then be discharged to the feeding pipe 3 through the discharge pipe 209.

[0048] 3. Sealing performance:

[0049] When the valve plate 207 and the valve piece 208 return to the closed position, the valve piece 208 is in contact with the connecting body 202 to ensure sealing and prevent material leakage.

[0050] The sealing member 204 further strengthens the sealing between the end cover plate 203 and the rotating shaft 206, ensuring that the material does not leak to the outside.

[0051] In one embodiment, the outer side wall of the upper end of the valve sleeve shell 201 is fixedly connected with an external connector 2012, and a plug is threadedly connected to the external connector 2012. The external connector 2012 provides a flexible interface that can be used for external connection of steam, flocculating agent, and other process medium pipelines, making the device more widely applicable. When the external connector 2012 is not in use, the plug can effectively close the external connector 2012 to prevent material leakage.

[0052] In one embodiment, the valve piece 208 is made of corrosion-resistant non-metallic material and is fixed to the valve plate 207 by screws. First, using corrosion-resistant non-metallic material to make the valve piece 208 can effectively resist corrosive materials and improve the service life of the valve. Second, the valve piece 208 is fixed by screws to ensure that it does not easily fall off under high pressure or high flow conditions, enhancing safety and reliability. The connecting block on one side of the first discharge channel 2010 is fixedly connected with a positioning pin 2013, which is movably connected in the second discharge channel 2011. The positioning pin 2013 can control the rotation angle of the valve plate 207 and the valve piece 208, ensuring that the valve piece 208 maintains the correct position when opening and closing.

[0053] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims, not the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0054] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A centrifuge feeding device, comprising a feeding assembly (1), characterized in that: The feeding assembly (1) is fixedly connected to the lower end of the thickener (2). The discharge end of the feeding assembly (1) is connected to the feeding pipe (3). The end of the feeding pipe (3) is connected to the centrifuge (4). The feeding assembly (1) includes a stirring part and a discharge valve part. The upper end of the stirring part is connected to the thickener (2). At least one discharge valve part is provided on the upper circumferential surface of the stirring part. The discharge valve part is connected to the feeding pipe (3).

2. A centrifuge feeding device according to claim 1, characterized in that: The stirring section includes a motor (101), a reducer (102), a coupling (103), a stirring shaft (104), a stirring paddle (105), a stirring shell (106), and an outer shell (107). The upper end of the motor (101) is connected to the reducer (102), and the upper end of the reducer (102) is fixedly connected to the outer shell (107). The coupling (103) is rotatably connected inside the outer shell (107). The coupling (103) is connected to the output end of the reducer (102), and the other end of the coupling (103) is fixedly connected to the stirring shaft (104). The upper end of the outer shell (107) is fixedly connected to the stirring shell (106). The upper end of the stirring shaft (104) passes through the stirring shell (106) and is fixedly connected to the stirring paddle (105). The stirring paddle (105) is rotatably connected inside the stirring shell (106). The upper end of the stirring shell (106) is connected to the thickener (2).

3. A centrifuge feeding device according to claim 2, characterized in that: The discharge valve includes a valve housing (201), a connecting body (202), an end cover plate (203), a seal (204), an actuator (205), a rotating shaft (206), a valve plate (207), and a valve disc (208). The connecting body (202) is fixedly connected to the outer periphery of the outer housing (107). One end of the valve housing (201) is sleeved and connected to the connecting body (202) and sealed and fixed to the connecting body (202). A discharge pipe (209) is fixedly connected to the outer side wall of the lower end of the valve housing (201). The discharge pipe (209) is connected to the feeding pipe (3). The other end of the valve housing (201) is fixedly connected to the end cover plate (203). An actuator (205) is fixedly connected to the outer side of the end cover plate (203). The actuator (205) is connected to the rotating shaft (206). 6) After passing through the end cover plate (203), it is rotatably connected inside the valve sleeve (201). One end of the rotating shaft (206) located inside the valve sleeve (201) is rotatably connected to the middle of the connecting body (202). A sealing element (204) is connected between the end cover plate (203) and the rotating shaft (206). A valve plate (207) is fixedly connected to the rotating shaft (206) on one side of the connecting body (202). A valve piece (208) is fixedly connected to the valve plate (207) facing the connecting body (202). The valve piece (208) is in contact with the connecting body (202). A first discharge channel (2010) passes through the connecting body (202). A second discharge channel (2011) is opened on the valve plate (207) and the valve piece (208). The second discharge channel (2011) and the first discharge channel (2010) are arranged opposite to or staggered.

4. A centrifuge feeding device according to claim 2, characterized in that: A bushing (108) is fixedly connected to the lower middle part of the stirring shell (106). The stirring shaft (104) is rotatably connected inside the bushing (108). Two sets of annular grooves are opened inside the bushing (108). A first sealing sleeve (109) is fixedly connected to each of the annular grooves. The first sealing sleeve (109) is respectively sleeved and connected to the stirring shaft (104).

5. A centrifuge feeding device according to claim 4, characterized in that: An isolation plate (1010) is fixedly connected inside the outer shell (107). A bearing sleeve (1011) is fixedly connected in the middle of the isolation plate (1010). A roller bearing (1012) is fixedly connected inside the bearing sleeve (1011). The stirring shaft (104) is fixedly connected to the inner ring of the roller bearing (1012). A second sealing sleeve (1013) is fixedly connected inside the bearing sleeve (1011) above the roller bearing (1012). The second sealing sleeve (1013) is sleeved and connected to the stirring shaft (104). An overflow pipe (1014) is fixedly connected to one side of the lower end of the isolation plate (1010). The other end of the overflow pipe (1014) extends through to the outside of the outer shell (107).

6. A centrifuge feeding device according to claim 3, characterized in that: An external connector (2012) is fixedly connected to the outer wall of the upper end of the valve housing (201), and a plug is threaded onto the external connector (2012).

7. A centrifuge feeding device according to claim 6, characterized in that: The valve plate (208) is made of corrosion-resistant non-metallic material and is fixed to the valve plate (207) by screws. A positioning pin (2013) is fixedly connected to the connecting block on one side of the first discharge channel (2010). The positioning pin (2013) is movably connected in the second discharge channel (2011).

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