Horizontal screw centrifuge suitable for intelligent deslagging of low-solid-content materials

Abstract

The invention relates to the technical field of horizontal spiral centrifugal machines, in particular to a horizontal spiral centrifugal machine suitable for intelligent deslagging of low-solid-content materials, which comprises a rotary drum arranged at one end of a spiral conveyor, a plurality of deslagging openings are formed in the rotary drum, and a baffle is arranged on each deslagging opening. The baffle plates are arc-shaped and are matched with the peripheral surface of the rotary drum, the baffle plates are in contact with the peripheral surface of the rotary drum and are used for blocking solid-phase materials in the slag discharge port, a control mechanism for controlling the displacement of the baffle plates is arranged on the rotary drum, and a heating mechanism for heating the solid-phase materials in the slag discharge port is arranged on each baffle plate. A baffle is additionally arranged on the slag discharging opening and is of an arc-shaped structure matched with and making contact with the peripheral face of the rotary drum, displacement of the baffle is controlled, the opening degree of the slag discharging opening is controlled, the baffle blocks part of solid-phase materials at the slag discharging opening, the speed of the solid-phase materials passing through the slag discharging opening is reduced, the centrifugal dewatering time of the solid-phase materials is prolonged, the water content of part of the solid-phase materials is reduced, and the dewatering efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal screw centrifuges, and in particular to a horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials. Background Art

[0002] Horizontal screw centrifuge is a common centrifugal separation equipment. It is mainly composed of a drum, a screw conveyor and a power device. The drum and the screw rotate at high speed in the same direction with a certain differential speed. The material is continuously introduced into the inner cylinder of the feeding screw from the feed pipe, and enters the drum after acceleration. Under the action of the centrifugal field, the heavier solid phase is deposited on the drum wall to form a sediment layer. The feeding screw continuously pushes the deposited solid phase to the cone end of the drum and discharges it out of the machine through the slag discharge port. The lighter liquid phase forms an inner liquid ring, which continuously overflows the drum from the overflow port at the large end of the drum and is discharged out of the machine through the liquid discharge port. Horizontal screw centrifuge is widely used in chemical, light industry, pharmaceutical and other industries due to its simple structure, continuous operation and large workload.

[0003] The horizontal screw centrifuge uses the different densities of each phase to achieve solid-liquid separation under the action of centrifugal force. The discharge port of the conventional horizontal screw centrifuge is usually rectangular or square, and the size of the discharge port is fixed. When faced with a large difference in the concentration of the solid and liquid phases, the water content of the solid phase may be too high or the solid content of the liquid phase may be too high during the separation process, which may lead to unstable discharge and intermittent or discontinuous discharge. Due to the high liquid content, the fluidity of the discharge port may deteriorate, increasing the risk of blockage, thereby affecting the separation efficiency. For example, in the process of industrial and municipal sewage treatment, when the sludge is dehydrated, due to the large sewage content, the separated sludge usually has a high water content and needs further dehydration to achieve the desired effect, which not only increases the workload, but also consumes more time and cost. At present, the existing horizontal screw centrifuges usually use rectangular or square discharge ports, and the size of the discharge port is fixed. This design is conducive to the rapid discharge of larger particles of solids or materials with a high solid content. However, when processing low-solid content materials, the traditional slag discharge port has the problem of high solid phase moisture content and unsatisfactory dehydration effect, and may even cause leakage, resulting in the equipment being unable to operate normally. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the existing horizontal screw centrifuge usually adopts a rectangular or square slag discharge port, and the size of the slag discharge port is fixed, when processing low-solid content materials, the traditional slag discharge port has a high solid phase moisture content, the dehydration effect is not ideal, and even leakage may occur, resulting in the equipment being unable to operate normally. A horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials is now provided.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials, comprising a drum arranged at one end of a screw conveyor, the drum is provided with a plurality of slag discharge ports, each of the slag discharge ports is provided with a baffle, the baffle is arc-shaped and matches the outer peripheral surface of the drum, the baffle contacts the outer peripheral surface of the drum and is used to block the solid phase material in the slag discharge port, the drum is provided with a control mechanism for controlling the displacement of the baffle, and each of the baffles is provided with a heating mechanism for heating the solid phase material in the slag discharge port;

[0006] The control mechanism includes a cylinder, a turntable, a hydraulic tank and a hydraulic device. The cylinder and the baffle are arranged in a one-to-one correspondence. One end of the cylinder is fixed on the drum, and the extended end of the cylinder is hinged on the baffle. The cylinder is arc-shaped and is coaxially arranged with the drum. The cylinder includes a cylinder body and an extension rod. A piston is arranged at one end of the extension rod. The piston is slidably arranged in the cylinder body. The bottom space of the piston and the cylinder body forms an oil chamber. The turntable is rotatably sealed on the hydraulic tank. A sealing chamber is provided between the turntable and the hydraulic tank. Hydraulic oil is arranged in the sealing chamber. An oil pipeline connected to the oil chamber is provided on the turntable. The hydraulic device is connected to the hydraulic tank. Compared with the prior art, this solution installs a baffle on the slag discharge port of the drum, and the baffle is an arc-shaped structure that matches and contacts the outer peripheral surface of the drum. The displacement of the baffle is controlled by a control mechanism to control the opening of the slag discharge port. The baffle blocks a portion of the solid phase material at the slag discharge port, slows down the speed of the solid phase material passing through the slag discharge port, increases the centrifugal dehydration time of the solid phase material, reduces the water content of part of the solid phase, and improves the dehydration efficiency.

[0007] In order to reduce the water content of the solid phase material, in some preferred embodiments, the heating mechanism includes a heating tube arranged in the baffle, and a power supply battery for supplying power to the heating tube is arranged on the baffle. By arranging the heating tube on the baffle, the heating tube is used for heat exchange and evaporation of water when the solid phase material contacts the baffle, thereby reducing the water content of the solid phase material and helping the solid phase material to gradually form a slag cake.

[0008] In some preferred embodiments, the heating tube is U-shaped.

[0009] Since the screw conveyor and the drum rotate as a whole, in order to ensure the stable and reliable operation of the baffle and the oil cylinder, some embodiments are preferably provided with a shielding box corresponding to each of the baffles, the shielding box is fixedly mounted on the drum, and one end of the shielding box is provided with a receiving groove, the receiving groove is arranged along the displacement direction of the baffle, and the receiving groove is used to accommodate the baffle. The baffle is driven by the oil cylinder and telescoped into the receiving groove of the shielding box, which plays a protective role for the baffle. The displacement of the baffle during operation is not affected by the outside world, ensuring the stable and reliable operation of the baffle.

[0010] In order to ensure that the oil cylinder operates stably and reliably, in some preferred embodiments, the oil cylinder is fixed at the bottom of the receiving tank. By arranging the oil cylinder in the receiving tank, the oil cylinder is protected from external influences, thereby ensuring that the oil cylinder operates stably and reliably.

[0011] In order to facilitate the control of the size of the slag discharge port opening, preferably in some embodiments, each baffle is provided with a pressure sensor, the pressure sensor is used to detect the pressure of the solid phase material in the slag discharge port on the baffle, and the pressure sensor is connected to the power supply battery. By providing a pressure sensor on the baffle and using it to sense the size of the force of the solid phase material on the baffle, it is convenient to control the size of the slag discharge port opening.

[0012] In some preferred embodiments, the pressure sensor is located at one end of the baffle plate close to the slag discharge port.

[0013] In some preferred embodiments, a mounting hole is formed at one end of the baffle plate close to the slag discharge port, and the pressure sensor is fixedly installed in the mounting hole.

[0014] In order to realize automatic control, in some preferred embodiments, the control mechanism further includes a single chip microcomputer, which is respectively connected to the hydraulic device, the pressure sensor and the heating tube signal. The single chip microcomputer receives the signal of the pressure sensor and controls the operation of the hydraulic device and the heating tube to realize automatic control of the opening size of the slag discharge port. The automatic control improves the dehydration efficiency of the equipment, simplifies the operation process, reduces the need for manual intervention, and enables the slag discharge device to adapt to the processing requirements of different materials, further improving the overall performance of the horizontal screw centrifuge.

[0015] The beneficial effects of the present invention are as follows: when the horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials is in use, a baffle is added to the slag discharge port of the drum, and the baffle is an arc-shaped structure that matches and contacts the outer peripheral surface of the drum. The displacement of the baffle is controlled by a control mechanism to achieve control of the opening of the slag discharge port. The baffle blocks a portion of the solid-phase material at the slag discharge port, slows down the speed of the solid-phase material passing through the slag discharge port, increases the centrifugal dehydration time of the solid-phase material, reduces the water content of part of the solid phase, and improves the dehydration efficiency, thereby avoiding the problem that the existing horizontal screw centrifuge usually adopts a rectangular or square slag discharge port with a fixed size. When processing low-solid content materials, the traditional slag discharge port has a high solid phase moisture content, an unsatisfactory dehydration effect, and may even leak liquid, resulting in the problem that the equipment cannot operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2yes Figure 1 A partial enlarged view of middle A;

[0019] Figure 3 It is a front view of the present invention;

[0020] Figure 4 It is a right side view of the present invention;

[0021] Figure 5 yes Figure 3 Cross-sectional view of the middle BB;

[0022] Figure 6 yes Figure 5 A partial enlarged view of C in the middle.

[0023] In the figure: 1. screw conveyor, 2. rotating drum, 3. slag discharge port, 4. baffle, 5. oil cylinder, 6. turntable, 7. hydraulic tank, 8. hydraulic device, 9. heating tube, 10. shielding box, 11. containing tank, 12. pressure sensor, 13. single chip microcomputer. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with embodiments:

[0025] The present invention is not limited to the following specific embodiments. A person skilled in the art can implement the present invention in various other specific embodiments according to the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and ideas of the present invention fall within the protection scope of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] like Figure 1-6 As shown, a horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials includes a drum 2 arranged at one end of a screw conveyor 1. In this embodiment, four slag discharge ports 3 are evenly distributed on the circumferential surface of the drum 2, and each slag discharge port 3 is provided with a baffle 4, that is, four baffles 4. The size of the baffle 4 is larger than the size of the slag discharge port 3. The shape of the baffle 4 is similar to the shape of the slag discharge port 3, for example, a rectangle or a square. The baffle 4 is arc-shaped and matches the outer circumferential surface of the drum 2. The baffle 4 contacts the outer circumferential surface of the drum 2. The baffle 4 is used to block the solid phase material in the slag discharge port 3. A control mechanism is provided on the drum 2. The control mechanism is used to control the displacement of the baffle 4 to achieve the control of the opening of the slag discharge port 3. A heating mechanism is provided on each baffle 4. The heating mechanism is used to heat the solid phase material in the slag discharge port 3 and evaporate moisture;

[0029] The control mechanism includes a cylinder 5, a turntable 6, a hydraulic tank 7 and a hydraulic device 8. The cylinder 5 is arranged in a one-to-one correspondence with the baffle 4. One end of the cylinder 5 is fixed on the drum 2, and the extended end of the cylinder 5 is hinged on the baffle 4. The cylinder 5 is arc-shaped and is coaxially arranged with the drum 2. The cylinder 5 includes a cylinder body and an extension rod, that is, the cylinder body is arc-shaped, and the extension rod is also arc-shaped. A piston is arranged at one end of the extension rod, and the piston is slidably arranged in the cylinder body. The bottom space of the piston and the cylinder body forms an oil chamber. The turntable 6 is rotatably sealed on the hydraulic tank 7. There is a sealed chamber between the turntable 6 and the hydraulic tank 7, and hydraulic oil is arranged in the sealed chamber. An oil pipeline connected to the oil chamber is arranged on the turntable 6. The hydraulic device 8 is connected to the hydraulic tank 7 and ensures that the hydraulic system has sufficient oil pressure and stable flow during operation.

[0030] The heating mechanism comprises a heating tube 9 arranged in the baffle 4 , on which a power supply battery for supplying power to the heating tube 9 is arranged, and the heating tube 9 is U-shaped.

[0031] A shielding box 10 is correspondingly arranged on each baffle 4, and the shielding box 10 is fixedly installed on the drum 2. A receiving groove 11 is arranged at one end of the shielding box 10, and the receiving groove 11 is arranged along the displacement direction of the baffle 4. The receiving groove 11 is used to receive the baffle 4, and the cylinder 5 is fixed at the bottom of the receiving groove 11.

[0032] The control mechanism also includes a single-chip computer 13. The baffle 4 is provided with a pressure sensor 12. The pressure sensor 12 is used to detect the pressure of the solid phase material in the slag discharge port 3 acting on the baffle 4. The pressure sensor 12 is connected to the power supply battery. The pressure sensor 12 is located at one end of the baffle 4 close to the slag discharge port 3. A mounting hole is opened at the end of the baffle 4 close to the slag discharge port 3. The pressure sensor 12 is fixedly installed in the mounting hole. The single-chip computer 13 is respectively connected to the hydraulic device 8, the pressure sensor 12 and the heating tube 9 for signals.

[0033] When the above-mentioned horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials is in use, first, the single-chip microcomputer 13 controls the hydraulic device 8 to provide pressure and transports the oil in the hydraulic tank 7 to the oil chamber through the oil pipe and pushes the extension rod to extend, driving the baffle 4 to move and cover the slag discharge port 3, and then controls the screw conveyor 1 to rotate, and the sludge is continuously introduced into the screw conveyor 1 through the feed pipe, and enters the drum 2 after acceleration. Under the action of the centrifugal field, the heavier solid phase is deposited on the wall of the drum 2 to form a sediment layer, and the deposited solid phase is continuously pushed to the cone end of the drum 2 and accumulated at the slag discharge port 3. At the same time, the turntable 6 is driven by the drum 2 to rotate on the hydraulic tank 7, and then the single-chip microcomputer 13 controls the heating tube 9 to heat and evaporate the solid phase in the slag discharge port 3. Moisture content, when the pressure sensor 12 detects that the pressure reaches a certain value, the single chip computer 13 controls the hydraulic device 8 to control the hydraulic oil in the oil chamber to flow back into the hydraulic tank 7, and a negative pressure is formed in the oil chamber. The extension rod contracts and drives the baffle 4 to move into the receiving groove 11 of the shielding box 10. The four slag discharge ports 3 are opened to the required opening at the same time, and a part of the solid phase material can be temporarily blocked, so that the separated solid phase can stay at the baffle 4 for a short time. The blocked part will continue to contact and heat with the baffle 4, thereby reducing the water content of part of the solid phase, improving the dehydration efficiency, and slowing down the time for the solid phase material to pass through the slag discharge port 3. During the sliding process of the baffle 4, the solid slag stuck to the bottom of the baffle 4 can be scraped clean to prevent sticking to the wall, and the solid phase is discharged from the slag discharge port 3;

[0034] When the discharge is completed, the pressure sensor 12 detects that the pressure on the baffle 4 is reduced to a preset value, and the single-chip computer 13 controls the hydraulic oil of the hydraulic device 8 to enter the oil chamber through the oil pipe from the hydraulic tank 7, driving the extension rod to extend, and the extension rod drives the baffle 4 to move and reset, so that the solid phase with a higher water content continues to stay at the small end of the drum 2 for a period of time. The displacement of the baffle 4 is continuously controlled according to the pressure on the baffle 4, so that the horizontal screw centrifuge can perform dehydration more effectively, adapt to the processing requirements of different materials, and further improve the overall performance of the horizontal screw centrifuge.

[0035] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials, comprising a drum (2) arranged at one end of a screw conveyor (1), wherein the drum (2) is provided with a plurality of slag discharge ports (3), characterized in that: Each of the slag discharge ports (3) is provided with a baffle (4), the baffle (4) is arc-shaped and matches the outer peripheral surface of the drum (2), the baffle (4) contacts the outer peripheral surface of the drum (2) and is used to block the solid phase material in the slag discharge port (3), the drum (2) is provided with a control mechanism for controlling the displacement of the baffle (4), and each of the baffles (4) is provided with a heating mechanism for heating the solid phase material in the slag discharge port (3); The control mechanism comprises an oil cylinder (5), a rotating disk (6), a hydraulic tank (7) and a hydraulic device (8); the oil cylinder (5) and the baffle (4) are arranged in a one-to-one correspondence; one end of the oil cylinder (5) is fixed on the rotating drum (2); the extended end of the oil cylinder (5) is hinged on the baffle (4); the oil cylinder (5) is arc-shaped and is arranged coaxially with the rotating drum (2); the oil cylinder (5) comprises a cylinder body and an extended rod; one end of the extended rod is provided with a piston; the piston is slidably arranged in the cylinder body; the bottom space of the piston and the cylinder body forms an oil chamber; the rotating disk (6) is rotatably sealed on the hydraulic tank (7); a sealed chamber is provided between the rotating disk (6) and the hydraulic tank (7); hydraulic oil is arranged in the sealed chamber; an oil pipeline connected to the oil chamber is provided on the rotating disk (6); and the hydraulic device (8) is connected to the hydraulic tank (7).

2. A horizontal screw centrifuge suitable for intelligent slag discharge of low-solid content materials according to claim 1, characterized in that: The heating mechanism comprises a heating tube (9) arranged in the baffle (4), and a power supply battery for supplying power to the heating tube (9) is arranged on the baffle (4).

3. A horizontal screw centrifuge suitable for intelligent slag discharge of low solid content materials according to claim 2, characterized in that: The heating tube (9) is U-shaped.

4. A horizontal screw centrifuge suitable for intelligent slag discharge of low solid content materials according to claim 1, characterized in that: A shielding box (10) is correspondingly arranged on each baffle (4), the shielding box (10) being fixedly mounted on the rotating drum (2), a receiving groove (11) being arranged at one end of the shielding box (10), the receiving groove (11) being arranged along the displacement direction of the baffle (4), and the receiving groove (11) being used to receive the baffle (4).

5. A horizontal screw centrifuge suitable for intelligent slag discharge of low solid content materials according to claim 4, characterized in that: The oil cylinder (5) is fixed at the bottom of the containing groove (11).

6. A horizontal screw centrifuge suitable for intelligent slag discharge of low solid content materials according to claim 2, characterized in that: Each baffle (4) is provided with a pressure sensor (12), and the pressure sensor (12) is used to detect the pressure of the solid phase material in the slag discharge port (3) acting on the baffle (4), and the pressure sensor (12) is connected to a power supply battery.

7. A horizontal screw centrifuge suitable for intelligent slag discharge of low solid content materials according to claim 6, characterized in that: The pressure sensor (12) is located at one end of the baffle (4) close to the slag discharge port (3).

8. The horizontal screw centrifuge suitable for intelligent slag discharge of low solid content materials according to claim 7, characterized in that: An installation hole is provided at one end of the baffle plate (4) close to the slag discharge port (3), and the pressure sensor (12) is fixedly installed in the installation hole.

9. A horizontal screw centrifuge suitable for intelligent slag discharge of low solid content materials according to claim 8, characterized in that: The control mechanism further comprises a single chip computer (13), and the single chip computer (13) is respectively connected to the hydraulic device (8), the pressure sensor (12) and the heating tube (9) by signals.

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