Horizontal spiral discharging sedimentation centrifuge for treating percolate

Abstract

The horizontal type spiral discharging sedimentation centrifuge comprises a machine base, protective covers are fixedly connected to the two sides of the upper end of the machine base respectively, a shell is fixedly connected to the portion, between the protective covers, of the machine base, a rotary drum is rotationally connected into the shell, a spiral conveyor is rotationally connected into the rotary drum, and the spiral conveyor is fixedly connected with the machine base. A liquid outlet pipe is rotationally connected to the central axis of the spiral conveyor, the liquid outlet pipe is communicated with a liquid outlet cavity formed in the spiral conveyor, a liquid inlet pipe is connected into the liquid outlet pipe in a sleeved mode, a liquid inlet cavity is formed in one end of the interior of the spiral conveyor, and the end of the liquid inlet pipe is communicated with the liquid inlet cavity. According to the horizontal type spiral discharging sedimentation centrifuge, the structures of the rotary drum and the spiral conveyor are optimized, the operation process is simplified, energy consumption is reduced, the maintenance requirement is reduced, and the solid-liquid separation effect and the equipment stability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of leachate treatment, in particular to a horizontal spiral unloading sedimentation centrifuge for treating leachate. Background Art

[0002] Traditional leachate treatment technologies mainly include chemical precipitation, physical filtration, biological treatment, etc. These methods usually require multiple steps in the treatment process, and it is difficult to efficiently separate the solid and liquid components in the leachate. In addition, the existing separation equipment mostly adopts a vertical structure or other complex separation devices. These devices have certain deficiencies in treatment efficiency, energy consumption, and operation and maintenance. For example, although the traditional centrifuge performs well in solid-liquid separation, its treatment process is often complicated and prone to clogging problems with solid matter, affecting the stability and work efficiency of the equipment.

[0003] In order to solve these problems, the present invention provides a horizontal spiral unloading sedimentation centrifuge. The device combines the centrifugal separation technology and the solid discharge function of the screw conveyor, aims to improve the solid-liquid separation efficiency in the leachate treatment process, simplify the operation steps, and optimize the stability and energy efficiency of the device.

[0004] The horizontal spiral unloading sedimentation centrifuge of the present invention effectively combines the functions of the drum and the screw conveyor through a unique structural design, thereby achieving efficient separation of solids and liquids. The drum part adopts a combination design of a large-diameter circular sleeve, a tapered outer sleeve and a small-diameter circular sleeve, which helps to improve the separation effect and facilitate the discharge of solid matter. The design of the screw conveyor ensures the smooth movement of solid matter in the drum, and effectively discharges solid matter through the slag discharge hole and the slag discharge cavity, thereby optimizing the processing process and improving the overall performance of the equipment.

[0005] Through this innovative design, the equipment of the present invention can effectively solve the problem of solid matter discharge in traditional leachate treatment technology, improve the treatment efficiency of leachate, and provide a more efficient and stable solution for the fields of environmental protection and wastewater treatment. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a horizontal spiral unloading sedimentation centrifuge which simplifies the operation process, reduces energy consumption, reduces maintenance requirements, and improves the solid-liquid separation effect and equipment stability by optimizing the structure of the drum and the screw conveyor.

[0007] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a horizontal spiral unloading sedimentation centrifuge for treating leachate, comprising a machine base, a protective cover, an outer shell, a rotary drum, a screw conveyor, a liquid inlet pipe, and a liquid outlet pipe. The upper ends of the machine base are respectively fixedly connected with protective covers on both sides to improve the safety of the equipment during use. The machine base between the protective covers is fixedly connected with an outer shell, and the outer shell provides a closed working environment for the internal rotary drum. The rotary drum is rotatably connected inside the outer shell, and the rotary drum plays a role of centrifugal separation, and is used to separate solids from liquids in the leachate. The rotary drum is rotatably connected inside the rotary drum, and the screw conveyor rotates in the same direction as the rotary drum rotates, and is used to push the deposited solid particles to the slag discharge hole. A liquid outlet pipe is rotatably connected to the central axis of the screw conveyor, and the liquid outlet pipe is used to discharge the separated liquid. The end of the liquid outlet pipe is connected to a liquid outlet cavity opened in the screw conveyor, and the liquid outlet cavity is connected to the outside of the screw conveyor. The liquid outlet cavity is used to introduce the separated liquid into the liquid outlet pipe. A liquid inlet pipe is sleeved and connected inside the liquid outlet pipe, and the liquid inlet pipe is used to transport the leachate to the inside of the equipment for separation treatment. One end of the liquid inlet pipe passes through the liquid outlet pipe and is rotatably connected to the screw conveyor. A liquid inlet cavity is opened at one end inside the screw conveyor, and the liquid inlet cavity is connected to the outside of the screw conveyor. The end of the liquid inlet pipe is connected to the liquid inlet cavity, and the liquid inlet cavity is used to transport the leachate in the liquid inlet pipe to the outer shell.

[0008] A main motor is fixedly connected to the outer wall of the protective cover on one side, and the rotating shaft of the main motor is connected to the drum shaft through a belt after passing through the protective cover. The drum shaft is fixedly connected to one end of the drum for driving the drum to rotate at high speed, and an auxiliary motor is fixedly connected to the outer wall of the protective cover on the other side, and the rotating shaft of the auxiliary motor is connected to the differential transmission through a belt after passing through the interior of the protective cover. The output end of the differential is connected to a sleeve shaft and a core shaft, and the sleeve shaft is connected to the other end of the drum for transmitting power to the drum to keep it rotating, and the core shaft is rotatably connected in the sleeve shaft, and one end of the core shaft is fixedly connected to the screw conveyor after passing through the sleeve shaft, so as to drive the screw conveyor to rotate synchronously and control the speed difference between the screw conveyor and the drum.

[0009] The drum shaft and the sleeve shaft are both fixedly mounted with bearings and bearing supports, the bearings are used to support the rotational load of the shaft to reduce friction and wear, the bearing supports are fixedly connected to the upper end of the machine base, the bearing supports are used to ensure the stable position of the bearings and provide additional support to prevent the shaft from deflecting or vibrating.

[0010] The drum includes a large-diameter circular sleeve, a conical outer sleeve and a small-diameter circular sleeve, wherein the end of the small-diameter circular sleeve is connected to the drum shaft, and a plurality of slag discharge holes are opened on the outer peripheral side wall of the small-diameter circular sleeve for discharging the separated solid matter to the outside of the drum. A slag discharge cavity is arranged in the outer shell opposite to the slag discharge holes, which is connected to the slag discharge holes and is used to collect the solid matter discharged from the drum. The bottom of the slag discharge cavity is connected to a slag discharge pipe leading to the outside of the machine base for discharging the solid matter from the equipment.

[0011] The screw conveyor includes a large-diameter cylinder, a conical platform and a small-diameter cylinder, wherein one end of the large-diameter cylinder is fixedly connected to the core shaft, and the small-diameter cylinder is rotatably connected to one end of the drum through a bearing. The liquid outlet pipe passes through one end of the small-diameter cylinder, and a sliding sleeve hole is opened on the central axis of the drum shaft at the opposite end. The liquid outlet pipe is fixedly connected to the flange after passing through the sliding sleeve hole, the liquid inlet pipe in the liquid outlet pipe is connected to the middle part of the flange, and a discharge pipe is fixedly connected to the outer wall of the liquid outlet pipe.

[0012] A straight spiral blade is fixedly connected to the large-diameter cylinder of the spiral conveyor, and a conical spiral blade is fixedly connected to the conical platform. The opposite ends of the straight spiral blade and the conical spiral blade are connected to each other.

[0013] A first sealing bearing is fixedly connected to the liquid outlet pipe on one side of the liquid outlet chamber, a second sealing bearing is fixedly connected to the liquid inlet pipe on the other side of the liquid outlet chamber, and a third sealing bearing is fixedly connected to the liquid inlet pipe on one side of the liquid inlet chamber. The first sealing bearing, the second sealing bearing and the third sealing bearing are all embedded in the screw conveyor.

[0014] A plurality of first bracket plates arranged in an annular shape are fixedly connected in the liquid outlet cavity, an outer sleeve is fixedly connected to the screw conveyor located outside the liquid outlet cavity, a guide channel is arranged between the outer sleeve and the screw conveyor, the liquid inlet of the guide channel is located on one side of the slag outlet cavity, an annular baffle is fixedly connected to the screw conveyor located on the liquid inlet side, the outer diameter of the annular baffle is 1 / 2 of the distance between the outer wall of the screw conveyor and the inner wall of the drum, an acceleration cone is arranged on the inner wall of the liquid inlet cavity opposite to the liquid inlet pipe, and a second bracket plate in an annular array is fixedly connected inside the liquid inlet cavity.

[0015] A plurality of leg supports are fixedly connected to the lower end of the machine base, and disc-type rubber shock absorbers are fixedly installed on the leg supports.

[0016] Beneficial effects of the present invention: 1. Efficient solid-liquid separation: By combining the drum structure of a large diameter circular sleeve, a tapered outer sleeve and a small diameter circular sleeve, the present invention can effectively improve the solid-liquid separation efficiency of the leachate. The design of the drum enables the solid matter to be quickly deposited on the inner wall of the drum under the action of centrifugal force, while the liquid is concentrated in the central area of ​​the screw conveyor, effectively reducing the cross-interference of the solid-liquid mixture during the treatment process. 2. Simplify the operation process: The present invention adopts a horizontal structure and a screw conveyor design, which simplifies the discharge process of solids and liquids. The screw conveyor can smoothly push the solid matter to the slag discharge hole, and discharge the solid matter from the device through the slag discharge cavity and the slag discharge pipe, thereby reducing the complicated operation of solid matter blockage and cleaning in traditional separation equipment. 3. Reduce energy consumption and maintenance costs: The horizontal structure design reduces the overall height and complexity of the equipment, thereby reducing energy consumption during operation. In addition, the smooth rotation and optimized design of the screw conveyor reduce friction and energy loss, reducing the operating cost and maintenance requirements of the equipment. 4. Improve equipment stability and safety: The protective cover design of the equipment improves the safety during use and prevents personnel from touching the belt and the pulley. The stability and reliability of the overall design also make the equipment perform well in long-term operation and reduce the downtime caused by equipment failure. 5. Optimize solid matter handling: The design of the slag discharge hole and slag discharge chamber ensures that solid matter can be collected and discharged smoothly, effectively avoiding the secondary deposition of solid matter inside the equipment, thereby improving the processing capacity and efficiency of the equipment; In summary, the horizontal spiral unloading sedimentation centrifuge of the present invention significantly improves the efficiency of leachate treatment and the stability of the equipment through innovative design, and provides an effective solution for the efficient treatment of leachate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-section connection structure of the present invention; Figure 3 for Figure 2 Schematic diagram of the detailed structure of the A1 part; Figure 4 for Figure 2 Schematic diagram of the detailed structure of the A2 part; Figure 5 for Figure 2 Schematic diagram of the detailed structure of the A3 part; Figure 6 It is a schematic diagram of the cross-sectional connection structure of the screw conveyor of the present invention.

[0018] In the figure: 101 machine base, 102 protective cover, 103 shell, 104 drum, 105 screw conveyor, 106 liquid inlet pipe, 107 liquid outlet pipe, 108 liquid outlet cavity, 109 liquid inlet cavity, 201 main motor, 202 drum shaft, 203 auxiliary motor, 204 differential, 205 sleeve shaft, 206 mandrel, 207 bearing, 208 bearing support, 301 slag discharge hole, 302 slag discharge cavity, 303 slag discharge pipe, 304 sleeve hole, 305 flange, 306 liquid discharge pipe, 401 straight spiral blade, 402 conical spiral blade, 501 first sealed bearing, 502 second sealed bearing, 503 third sealed bearing, 601 first bracket plate, 602 outer sleeve, 603 guide channel, 604 annular baffle, 605 acceleration cone, 606 second bracket plate, 701 leg frame, 702 disc rubber shock absorber. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0020] See also Figure 1-Figure 6A horizontal spiral unloading sedimentation centrifuge for treating leachate comprises a base 101, a protective cover 102, a shell 103, a rotating drum 104, a screw conveyor 105, a liquid inlet pipe 106, and a liquid outlet pipe 107. The upper ends of the base 101 are fixedly connected with protective covers 102 on both sides to improve the safety of the equipment during use and prevent accidents caused by people touching the belt and the rotating wheel. The base 101 between the protective covers 102 is fixedly connected with a shell 103, which provides a rotating drum 104 inside. The outer shell 103 is connected to a drum 104 for rotation. The drum 104 plays a role of centrifugal separation through high-speed rotation, and is used to separate the solid and liquid in the leachate. The drum 104 is connected to a screw conveyor 105 for rotation. The screw conveyor 105 rotates in the same direction as the drum 104 rotates. The straight spiral blades 401 and the conical spiral blades 402 connected to the outside push the deposited solid particles to the slag discharge hole 301, effectively discharge the solid matter, and ensure the normal operation of the equipment. The screw conveyor 105 5 is rotatably connected with a liquid outlet pipe 107, which is used to discharge the separated liquid, and the end of the liquid outlet pipe 107 is connected with a liquid outlet cavity 108 opened in the screw conveyor 105, and the liquid outlet cavity 108 is connected with the outside of the screw conveyor 105, and the liquid outlet cavity 108 is used to introduce the separated liquid into the liquid outlet pipe 107, and then discharge the separated liquid through the liquid outlet pipe 107, and the liquid outlet pipe 107 is sleeved with a liquid inlet pipe 106, and a liquid outlet gap is left between the outer wall of the liquid inlet pipe 106 and the inner wall of the liquid outlet pipe 107. The separated liquid is discharged outward through the liquid outlet gap, and the liquid inlet pipe 106 is used to transport the leachate to the inside of the equipment for separation treatment. One end of the liquid inlet pipe 106 passes through the liquid outlet pipe 107 and is rotatably connected to the screw conveyor 105. A liquid inlet cavity 109 is provided at one end of the interior of the screw conveyor 105. The liquid inlet cavity 109 is connected to the outside of the screw conveyor 105, and the end of the liquid inlet pipe 106 is connected to the liquid inlet cavity 109. The liquid inlet cavity 109 is used to transport the leachate in the liquid inlet pipe 106 to the inside of the outer shell 103.

[0021] See also Figure 1-Figure 3In one embodiment, a main motor 201 is fixedly connected to the outer wall of the protective cover 102 on one side, and the rotating shaft of the main motor 201 penetrates into the protective cover 102 and is connected to the drum shaft 202 through a belt. The drum shaft 202 is fixedly connected to one end of the drum 104 and is used to drive the drum 104 to rotate at a high speed to achieve solid-liquid separation in the leachate. An auxiliary motor 203 is fixedly connected to the outer wall of the protective cover 102 on the other side, and the rotating shaft of the auxiliary motor 203 penetrates into the protective cover 102 and is connected to the drum shaft 202 through a belt and a differential. 204 transmission connection, the output end of the differential 204 is connected with a sleeve shaft 205 and a core shaft 206, the sleeve shaft 205 is connected to the other end of the drum 104, the core shaft 206 is rotatably connected in the sleeve shaft 205, one end of the core shaft 206 passes through the sleeve shaft 205 and is fixedly connected to the screw conveyor 105, which is used to drive the screw conveyor 105 to perform synchronous rotation operation, and at the same time, different speed control of the drum 104 and the screw conveyor 105 is realized through the differential 204, so as to optimize the motion difference of the screw conveyor 105 relative to the drum 104; The differential 204 plays the role of core transmission control. Its input end is connected to the auxiliary motor 203, and its output end is connected to the drum 104 and the screw conveyor 105 through the sleeve shaft 205 and the core shaft 206. By controlling the differential 204, the relative speed of the screw conveyor 105 and the drum 104 can be adjusted, thereby accurately controlling the transportation and discharge efficiency of the solid matter; The sleeve shaft 205 is connected to the other end of the rotating drum 104, and power is transmitted to the rotating drum 104 through the sleeve shaft 205 to keep the rotating drum 104 rotating.

[0022] The mandrel 206 is installed inside the sleeve shaft 205 and is fixedly connected to the screw conveyor 105. The mandrel 206 realizes the independent rotation of the screw conveyor 105 through the action of the differential 204, and pushes the solid matter to be transported to the outlet.

[0023] See also Figure 2 and Figure 3 In one embodiment, a bearing 207 and a bearing 207 support are fixedly installed on the drum shaft 202 and the sleeve shaft 205. The bearing 207 support is fixedly connected to the upper end of the machine base 101. The bearing 207 is used to support the rotation load of the shaft, reduce friction and wear, and thus improve the durability and operating efficiency of the equipment. The bearing 207 support is fixedly connected to the upper end of the machine base 101 to ensure the stable position of the bearing 207 and provide additional support to prevent the shaft from shifting or vibrating, which helps to maintain the alignment of the drum 104 and the sleeve shaft 205, and ensure the balance and accuracy of the rotation of the drum shaft 202 or the sleeve shaft 205.

[0024] See also Figure 2In one embodiment, the drum 104 includes a large-diameter circular sleeve, a conical outer sleeve 602 and a small-diameter circular sleeve, wherein the end of the small-diameter circular sleeve is connected to the drum shaft 202, and a plurality of slag discharge holes 301 are opened on the outer peripheral side wall of the small-diameter circular sleeve for discharging the separated solid matter to the outside of the drum 104, and a slag discharge cavity 302 is arranged in the outer shell 103 opposite to the slag discharge hole 301, which is connected to the slag discharge hole 301 and is used to collect the solid matter discharged from the drum 104, and the bottom of the slag discharge cavity 302 is connected to a slag discharge pipe 303 leading to the outside of the machine base 101, which is used to discharge the solid matter from the equipment for subsequent processing.

[0025] See also Figure 2-Figure 6 In one embodiment, the screw conveyor 105 includes a large diameter cylinder, a conical platform and a small diameter cylinder, wherein one end of the large diameter cylinder is fixedly connected to the core shaft 206, and the small diameter cylinder is rotatably connected to one end of the drum 104 through a bearing 207. The screw conveyor 105 is rotatably connected to one end of the drum 104 through the bearing 207, thereby ensuring the smooth rotation of the screw conveyor 105 inside the drum 104 and reducing friction and energy loss. The liquid outlet pipe 107 passes through one end of the small diameter cylinder, and a sleeve hole 304 is provided on the central axis of the drum shaft 202 at the opposite end. After the liquid outlet pipe 107 passes through the sleeve hole 304, it is fixed to the flange 305. The liquid inlet pipe 106 in the liquid outlet pipe 107 is connected with the middle part of the flange 305, and the outer wall of the liquid outlet pipe 107 is fixedly connected with a drain pipe 306. The liquid outlet pipe 107 is designed to discharge the separated liquid from the inside of the equipment, so that the liquid can flow axially from the center of the screw conveyor 105 and finally discharge from the equipment. The flange 305 is connected to one end of the liquid outlet pipe 107 for sealing and fixing the outer end of the liquid outlet pipe 107 so that the liquid is discharged outward from the drain pipe 306, and the liquid inlet pipe 106 is connected with the middle part of the flange 305, thereby ensuring that the leachate can enter the equipment from the liquid inlet pipe 106 at one end of the flange 305.

[0026] See also Figure 2-Figure 6 In one embodiment, a straight spiral blade 401 is fixedly connected to the large diameter cylinder of the screw conveyor 105, and a conical spiral blade 402 is fixedly connected to the conical platform. The straight spiral blade 401 and the conical spiral blade 402 are connected to each other at opposite ends, and are mainly used to push the separated solid matter along the inner wall of the drum 104 toward the slag discharge hole 301, thereby discharging the solid matter.

[0027] See also Figure 2 and Figure 4In one embodiment, a first sealing bearing 501 is fixedly connected to the liquid outlet pipe 107 on one side of the liquid outlet cavity 108, which is used for sealing between the liquid outlet pipe 107 and the screw conveyor 105 to prevent liquid leakage and improve the stability of the liquid outlet pipe 107 during rotation. A second sealing bearing 502 is fixedly connected to the liquid inlet pipe 106 on the other side of the liquid outlet cavity 108, and a third sealing bearing 503 is fixedly connected to the liquid inlet pipe 106 on one side of the liquid inlet cavity 109. The first sealing bearing 501, the second sealing bearing 502 and the third sealing bearing 503 are all embedded and connected in the screw conveyor 105. The second sealing bearing 502 and the third sealing bearing 503 are both used to improve the connection sealing between the liquid inlet pipe 106 and the screw conveyor 105, prevent the percolate in the liquid inlet cavity 109 from entering the liquid outlet cavity 108, and improve the rotation stability of the liquid inlet pipe 106.

[0028] See also Figure 6 In one embodiment, a plurality of first bracket plates 601 arranged in an annular shape are fixedly connected to the liquid outlet chamber 108, providing stable support and structural reinforcement, ensuring that the components inside the liquid outlet chamber 108 remain in a fixed position, and effectively allocating the liquid flow path, an outer sleeve 602 is fixedly connected to the screw conveyor 105 located outside the liquid outlet chamber 108, a guide channel 603 is provided between the outer sleeve 602 and the screw conveyor 105, for introducing the completely separated liquid into the liquid outlet chamber 108, the liquid inlet of the guide channel 603 is located on one side of the slag outlet chamber 302, and an annular baffle 604 is fixedly connected to the screw conveyor 105 located on the liquid inlet side, and the outer diameter of the annular baffle 604 is the screw conveyor 105. The annular baffle 604 can make the solid matter close to the inner wall of the drum 104 move toward the conical outer sleeve 602, while the liquid close to the outer wall of the screw conveyor 105 is blocked and cannot enter the conical outer sleeve 602, thereby improving the solid-liquid separation effect. An acceleration cone 605 is provided on the inner wall of the liquid inlet chamber 109 opposite to the liquid inlet pipe 106. The acceleration cone 605 helps to increase the flow rate and flow efficiency of the liquid, ensuring that the liquid can be evenly distributed and quickly processed when entering the equipment. A second bracket plate 606 in a ring array is fixedly connected to the inside of the liquid inlet chamber 109, further enhancing the structural stability of the liquid inlet chamber 109.

[0029] See also Figure 1 and Figure 2In one embodiment, a plurality of leg frames 701 are fixedly connected to the lower end of the machine base 101. The leg frames 701 provide support and stability for the equipment, ensuring that the equipment does not shake or tilt during operation. Disc rubber shock absorbers 702 are fixedly installed on the leg frames 701 to absorb and alleviate vibration and impact force generated during the operation of the equipment. The disc rubber shock absorber 702 is composed of multiple rubber discs stacked together, and has excellent shock-absorbing effect, which can effectively reduce the vibration transmitted from the machine base 101 to the leg frames 701, thereby protecting the structure and internal components of the equipment.

[0030] The working principle of the present invention is: 1. Feeding and preliminary processing: The leachate is transported to the interior of the device through the liquid inlet pipe 106 and enters the liquid inlet chamber 109 of the screw conveyor 105. The liquid inlet pipe 106 ensures that the liquid will not leak through the design of the flange 305 and the sealing bearing 207. The acceleration cone 605 in the liquid inlet chamber 109 accelerates the flow rate of the leachate and evenly distributes it to the inside of the drum 104, ensuring that the liquid entering the device can be fully treated.

[0031] 2. Centrifugal separation: The leachate is separated into solid and liquid in the high-speed rotating drum 104. The drum 104 is driven by a main motor 201 and connected to a drum shaft 202 via a belt. The high-speed operation of the main motor 201 drives the drum 104 to rotate, and the solid and liquid in the leachate are separated by centrifugal force.

[0032] As the drum 104 rotates at a high speed, solid particles with a higher density are thrown toward the inner wall of the drum 104 , while lighter liquid is concentrated near the outer surface of the screw conveyor 105 .

[0033] 3. Solid matter discharge: Solid matter gradually settles on the inner wall of the drum 104 under the action of centrifugal force, and is pushed to the slag discharge hole 301 by the spiral blades of the screw conveyor 105. The screw conveyor 105 is driven by the auxiliary motor 203, and its speed relative to the drum 104 is controlled by the differential 204, wherein the differential speed between the drum 104 and the screw conveyor 105 is 0.5m / s-0.8m / s, ensuring that the solid matter can be discharged smoothly.

[0034] A straight spiral blade 401 is fixed on the large diameter cylinder of the screw conveyor 105, and a conical spiral blade 402 is installed on the conical platform. The two are connected to each other and jointly push the solid matter to move along the inner wall of the drum 104 toward the slag discharge hole 301, and finally discharged to the outside of the equipment through the slag discharge cavity 302.

[0035] 4. Liquid discharge: The liquid after centrifugal separation flows along the guide channel 603 between the outer sleeve 602 and the screw conveyor 105 and enters the liquid outlet chamber 108. The liquid outlet pipe 107 is connected to the liquid outlet chamber 108, and the liquid is discharged from the device axially through the liquid outlet pipe 107. The sealing bearing 207 ensures that the liquid will not leak during the discharge process.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A horizontal spiral unloading sedimentation centrifuge for treating leachate, comprising a base (101), a protective cover (102), a housing (103), a rotating drum (104), a spiral conveyor (105), a liquid inlet pipe (106), and a liquid outlet pipe (107), characterized in that: Protective covers (102) are fixedly connected to both sides of the upper end of the machine base (101), and a housing (103) is fixedly connected to the machine base (101) between the protective covers (102). A rotating drum (104) is rotatably connected inside the housing (103), and a screw conveyor (105) is rotatably connected inside the rotating drum (104). The screw conveyor (105) rotates in the same direction as the rotating drum (104). A liquid outlet pipe (107) is rotatably connected to the central axis of the screw conveyor (105), and an end of the liquid outlet pipe (107) is connected to a liquid outlet cavity (108) provided in the screw conveyor (105). The liquid outlet cavity (108) is connected to the outside of the screw conveyor (105); the liquid outlet pipe (107) is sleeved with a liquid inlet pipe (106); one end of the liquid inlet pipe (106) passes through the liquid outlet pipe (107) and is rotatably connected to the screw conveyor (105); one end of the interior of the screw conveyor (105) is provided with a liquid inlet cavity (109); the liquid inlet cavity (109) is connected to the outside of the screw conveyor (105); the end of the liquid inlet pipe (106) is connected to the liquid inlet cavity (109); the liquid inlet cavity (109) is used to convey the percolate in the liquid inlet pipe (106) to the housing (103); A plurality of first support plates (601) arranged in an annular shape are fixedly connected in the liquid outlet cavity (108); an outer sleeve (602) is fixedly connected to the screw conveyor (105) located outside the liquid outlet cavity (108); a guide channel (603) is provided between the outer sleeve (602) and the screw conveyor (105); a liquid inlet of the guide channel (603) is located on one side of the protective cover (102); an annular baffle (604) is fixedly connected to the screw conveyor (105) located on the side of the liquid inlet; the outer diameter of the annular baffle (604) is 1 / 2 of the distance between the outer wall of the screw conveyor (105) and the inner wall of the drum (104); an acceleration cone (605) is provided on the inner wall of the liquid inlet cavity (109) opposite to the liquid inlet pipe (106); and a second support plate (606) arranged in an annular shape is fixedly connected inside the liquid inlet cavity (109).

2. A horizontal spiral unloading sedimentation centrifuge for treating leachate according to claim 1, characterized in that: A main motor (201) is fixedly connected to the outer wall of the protective cover (102) on one side, and the rotating shaft of the main motor (201) is inserted into the protective cover (102) and is connected to the drum shaft (202) through a belt. The drum shaft (202) is fixedly connected to one end of the drum (104) and is used to drive the drum (104) to rotate at a high speed. An auxiliary motor (203) is fixedly connected to the outer wall of the protective cover (102) on the other side, and the rotating shaft of the auxiliary motor (203) is inserted into the protective cover (102) and is connected to the differential (204) through a belt. The output end of the differential (204) is connected to a sleeve shaft (205) and a core shaft (206); the sleeve shaft (205) is connected to the other end of the drum (104) and is used to transmit power to the drum (104) so ​​that the drum (104) keeps rotating; the core shaft (206) is rotatably connected inside the sleeve shaft (205); one end of the core shaft (206) passes through the sleeve shaft (205) and is fixedly connected to the screw conveyor (105) so as to drive the screw conveyor (105) to perform synchronous rotation operation and control the speed difference between the screw conveyor (105) and the drum (104) at the same time.

3. A horizontal spiral unloading sedimentation centrifuge for treating leachate according to claim 2, characterized in that: A bearing (207) and a bearing (207) support are fixedly mounted on the drum shaft (202) and the sleeve shaft (205), and the bearing (207) support is fixedly connected to the upper end of the machine base (101).

4. A horizontal spiral unloading sedimentation centrifuge for treating leachate according to claim 3, characterized in that: The rotary drum (104) comprises a large-diameter circular sleeve, a conical outer sleeve (602) and a small-diameter circular sleeve, wherein the end of the small-diameter circular sleeve is connected to the rotary drum shaft (202), a plurality of slag discharge holes (301) are provided on the outer peripheral side wall of the small-diameter circular sleeve for discharging separated solid matter to the outside of the rotary drum (104), a slag discharge cavity (302) is provided in the outer shell (103) opposite to the slag discharge holes (301), connected to the slag discharge holes (301) and used to collect solid matter discharged from the rotary drum (104), and a slag discharge pipe (303) leading to the outside of the machine base (101) is connected to the bottom of the slag discharge cavity (302).

5. A horizontal spiral unloading sedimentation centrifuge for treating leachate according to claim 4, characterized in that: The screw conveyor (105) comprises a large-diameter cylinder, a conical platform and a small-diameter cylinder, wherein one end of the large-diameter cylinder is fixedly connected to the core shaft (206), and the small-diameter cylinder is rotatably connected to one end of the drum (104) via a bearing (207). The liquid outlet pipe (107) passes through one end of the small-diameter cylinder, and a sleeve hole (304) is provided on the central axis of the drum shaft (202) at the opposite end. The liquid outlet pipe (107) is fixedly connected to the flange (305) after passing through the sleeve hole (304). The liquid inlet pipe (106) in the liquid outlet pipe (107) is connected to the middle of the flange (305), and a liquid discharge pipe (306) is fixedly connected to the outer wall of the liquid outlet pipe (107).

6. A horizontal spiral unloading sedimentation centrifuge for treating leachate according to claim 1, characterized in that: A straight spiral blade (401) is fixedly connected to the large-diameter cylinder of the spiral conveyor (105), and a conical spiral blade (402) is fixedly connected to the conical platform; the straight spiral blade (401) and the conical spiral blade (402) are connected to each other at opposite ends.

7. The horizontal spiral unloading sedimentation centrifuge for treating leachate according to claim 1, characterized in that: A first sealed bearing (501) is fixedly connected to the liquid outlet pipe (107) on one side of the liquid outlet chamber (108), a second sealed bearing (502) is fixedly connected to the liquid inlet pipe (106) on the other side of the liquid outlet chamber (108), and a third sealed bearing (503) is fixedly connected to the liquid inlet pipe (106) on one side of the liquid inlet chamber (109); the first sealed bearing (501), the second sealed bearing (502) and the third sealed bearing (503) are all embedded and connected in the screw conveyor (105).

8. The horizontal spiral unloading sedimentation centrifuge for treating leachate according to claim 1, characterized in that: A plurality of leg supports (701) are fixedly connected to the lower end of the machine base (101), and a disc-type rubber shock absorber (702) is fixedly mounted on the leg supports (701).

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