Sound field synergistic horizontal screw centrifuge for high-ash-content and high-hardness occasions

Abstract

The utility model relates to the technical field of horizontal screw centrifuges, in particular to a sound field synergy horizontal screw centrifuge for high-ash-content and high-hardness occasions, which comprises a pipe I. The right end of the pipe I is fixedly connected with a partition plate, the right end of the partition plate is fixedly connected with a pipe II, a straight feeding pipe I is fixedly connected in the pipe II, and the pipe II and the feeding pipe I are coaxially arranged. A separation cavity is formed among the partition plate, the pipe II and the feeding pipe I, a feeding port communicated with the separation cavity is formed in the pipe II, a bearing assembly I is rotationally connected to the inner wall of the right end of the pipe II, a feeding pipe II is rotationally connected into the bearing assembly I, and the left end of the feeding pipe II is communicated with the feeding pipe I. The purpose is to reduce the loss of sound waves entering the centrifugal machine along with materials.

Description

Technical Field

[0001] The utility model relates to the technical field of horizontal scroll centrifuges, and more specifically to a sound field cooperative horizontal scroll centrifuge for high-ash and high-hardness occasions. Background Art

[0002] The flue gas desulfurization waste residue in petroleum refineries generally has the following characteristics. Firstly, the flue gas desulfurization waste residue in petroleum refineries often contains a high ash content, and these ash contents mainly come from impurities in crude oil and coke generated during the catalytic cracking process. The high ash content not only affects the processing efficiency of materials, but may also cause environmental pollution. Secondly, the materials in the desulfurization waste residue usually have a high hardness, such as limestone, quartz sand, etc. These high-hardness materials require special equipment and processes during the processing and disposal, and cannot be directly and efficiently processed by a horizontal scroll centrifuge. Therefore, it is necessary to cooperate with a sound field process to process the materials. However, the conventional horizontal scroll centrifuge cooperating with the sound field has defects. Mainly, the bent or long feed pipeline will affect the sound wave transmission effect. On the other hand, when the material enters the drum, since the channel is generally a right-angle structure, the sound wave will rebound at the vertical contact surface, which will further weaken the sound wave effect. Content of the Utility Model

[0003] The utility model provides a sound field cooperative horizontal scroll centrifuge for high-ash and high-hardness occasions, and the purpose is to reduce the loss of sound waves when the materials enter the centrifuge interior.

[0004] The above purpose is achieved by the following technical solutions:

[0005] A spiral pusher pipeline structure includes pipe Ⅰ. Its characteristic is that a partition is fixedly connected to the right end of pipe Ⅰ, a pipe Ⅱ is fixedly connected to the right end of the partition, a straight feed pipe Ⅰ is fixedly connected inside pipe Ⅱ, pipe Ⅱ and feed pipe Ⅰ are coaxially arranged, a separation chamber is formed between the partition, pipe Ⅱ and feed pipe Ⅰ, a feed port communicating with the separation chamber is arranged on pipe Ⅱ, a bearing assembly Ⅰ is rotatably connected to the inner wall at the right end of pipe Ⅱ, a feed pipe Ⅱ is rotatably connected inside the bearing assembly Ⅰ, and the left end of feed pipe Ⅱ is communicated with feed pipe Ⅰ.

[0006] A material distributor fixedly connected to the partition or pipe Ⅱ is arranged in the separation chamber. The right end face of the material distributor is triangular, and the tip of the material distributor faces right.

[0007] A liquid guiding port is arranged on pipe Ⅰ.

[0008] A horizontal screw centrifuge with acoustic field cooperation for high-ash and high-hardness occasions, adopting the above-mentioned pipeline structure of the spiral pusher, further comprising a drum, the drum includes a cylindrical wall body located on the left side, and a frustum-shaped wall body fixedly connected to the right end of the cylindrical wall body. The inner diameter of the frustum-shaped wall body decreases from left to right. A solid phase outlet is arranged at the right part of the frustum-shaped wall body, and the solid phase outlet is communicated with the inside of the drum. The left end of the cylindrical wall body is fixedly connected with an end cover, and a liquid phase outlet is arranged at the left end of the end cover. Pipe I and Pipe II are arranged inside the drum. Bearing assembly I is fixedly connected to the right end of the frustum-shaped wall body. Feed pipe II is fixedly connected to the support. A spiral blade is arranged inside the drum, and the spiral blade is fixedly connected to the outer walls of Pipe I and Pipe II. The pitch of the spiral blade gradually decreases when approaching the solid phase outlet. A bearing assembly II is rotatably connected inside the end cover. The left end of Pipe I is fixedly connected to the right end of the bearing assembly II, and it is sealed between Pipe I and the bearing assembly II.

[0009] The bearing assembly II is driven by a sub-motor to rotate, and the bearing assembly I is driven by a main motor to rotate, so that the drum and Pipe I rotate in a differential and same direction.

[0010] A vibration intensity measuring instrument is installed on each of the bearing assembly I and the bearing assembly II.

[0011] It further comprises a housing covering the drum, the bearing assembly I and the bearing assembly II. The drum, the bearing assembly I and the bearing assembly II are all rotatably connected to the housing. A channel I and a channel II are respectively arranged on the left and right sides of the housing. The channel I is communicated with the liquid phase outlet, and the channel II is communicated with the solid phase outlet.

[0012] A base is fixedly connected to the outer wall of the frustum-shaped wall body. A main cutter head is fixedly connected to the base. A sub-cutter head fixedly connected to the base is arranged on each of the left and right sides of the main cutter head. The main cutter head protrudes radially from the sub-cutter head. When the main cutter head and the sub-cutter head are installed, they are inclined counterclockwise by 3° with respect to the reference line perpendicular to the axis of the drum. The main cutter head and the solid phase outlet are in the radial direction of the same axis segment.

[0013] The base is made of carbon steel, and the main cutter head and the sub-cutter head are made of YG8 hard alloy material.

[0014] A reinforcement structure is fixedly connected to the outer edge of the sludge pushing section of the spiral blade, and the reinforcement structure is made of YG8 hard alloy material.

[0015] The beneficial effects of the horizontal screw centrifuge with acoustic field cooperation for high-ash and high-hardness occasions of the present utility model are as follows:

[0016] In order to increase the effect of the acoustic field, the feed pipe is appropriately adjusted, the length is reduced, the pipeline is straightened, and combined with the material distributor, when the material is injected, the sound wave smoothly enters the separation cavity of the centrifuge along with the material, reducing the loss.

[0017] For high-ash materials, when the solid content in the material changes, it is easy to cause the centrifuge to block, increasing the difficulty of operation and maintenance. To adapt to such materials, the spiral blades are designed as variable pitch pusher spirals, and the spiral pitch becomes smaller near the mud outlet. This increases the uniformity of mud pushing, reduces the instantaneous resistance of mud pushing, and reduces the possibility of blockage. On the other hand, the frustum-shaped wall allows the solid phase to have an extrusion process when moving to the right, achieving further drying.

[0018] The outer edge of the spiral blade, the main blade and the auxiliary blade are made of YG8 hard alloy, which can improve the wear resistance of the centrifuge and extend the maintenance cycle; the inclination design of the main blade can reduce the extrusion of the cover shell during scraper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the screw pusher;

[0020] Figure 2 This is an overall cross-sectional view of an acoustic field coordinated horizontal screw centrifuge for high ash content and high hardness applications according to the utility model.

[0021] Figure 3 This is a schematic diagram of the base and the main cutting head;

[0022] Figure 4 for Figure 3 A cross-sectional view of

[0023] Figure 5 for Figure 3 Another view of the structure.

[0024] In the figure: 1. drum; 1a. solid phase outlet; 2. end cover; 2a. liquid phase outlet; 3. bearing assembly I; 4. tube I; 4a. liquid guide port; 5. partition; 6. tube II; 6a. feed port; 7. feed pipe; 8. material distributor; 9. spiral type; 9b. reinforcement structure; base; 9c. main cutter head 9d; 9e. auxiliary cutter head; 10. bearing assembly II; 11. auxiliary motor; 12. main motor; 13. outer shell, 13a. inner shell; 14. vibration intensity measuring instrument. DETAILED DESCRIPTION

[0025] A sound field coordinated horizontal screw centrifuge for high ash and high hardness applications, reference Figure 1 and 2, including a spiral feeder pipe structure. The spiral feeder pipe structure includes pipe I 4, on which a liquid guide port 4a is provided. The right end of pipe I 4 is fixedly connected to a partition plate 5, and the right end of the partition plate 5 is fixedly connected to pipe II 6 coaxially arranged with pipe I 4. Inside pipe II 6, a feed pipe I 7a for the material to enter is fixedly connected. On the inner wall at the right end of pipe II 6, a bearing assembly I 3 is rotatably connected. Inside the bearing assembly I 3, a feed pipe II 7b is rotatably connected. The left end of the feed pipe II 7b is connected and communicated with the feed pipe I 7a. A separation chamber is formed between the partition plate 5, pipe II 6 and the feed pipe I 7a. On pipe II 6, a feed port 6a communicated with the separation chamber is provided. Inside the separation chamber, a material distributor 8 fixedly connected to the partition plate 5 or pipe II 6 is provided. The right end face of the material distributor 8 is triangular, and the tip of the material distributor 8 faces right, so that the right end face of the material distributor 8 gradually approaches the axis of pipe II 6 from left to right. In order to increase the effect of the sound field, the feed pipe II 7b is appropriately adjusted, the length is reduced, and the pipe is straightened. Combined with the material distributor 8, when the material is injected, the sound wave smoothly enters the centrifuge separation cavity with the material, reducing the attenuation of the sound wave. During the centrifugal operation, the feed pipe II 7b is fixed, and the feed pipe I 7a makes a circular motion. This requires the feed pipe II 7b to be fixedly connected to a support, for example, the outer wall on the right side of the feed pipe II 7b is fixedly connected to a fixed-position frame.

[0026] The specific shape of the bearing assembly I 3 is determined according to the actual processing situation. Generally, it includes a bearing seat and a bearing. The bearing is installed on two parts with relative rotation. Sealing structures such as rotary sealing rings should be considered for sealing at the places that need to be sealed.

[0027] Furthermore, it also includes a drum 1. The liquid guide port 4a and the feed port 6a are both communicated with the inside of the drum 1. The drum 1 includes a cylindrical wall body on the left side and a frustum-shaped wall body fixedly connected to the right end of the cylindrical wall body. The inner diameter of the frustum-shaped wall body decreases from left to right. A solid phase outlet 1a is provided at the right part of the frustum-shaped wall body, and the solid phase outlet 1a is communicated with the inside of the drum 1. Figure 2 In [description], the reason why the solid phase outlet 1a, the liquid guide port 4a and the feed port 6a cannot be seen is that after the spiral feeder pipe structure rotates, the structures at the ports are not on the section. The left end of the cylindrical wall body is fixedly connected to an end cover 2. A liquid phase outlet 2a is provided at the left end of the end cover 2. Preferably, 6 liquid phase outlets 2a are provided along the circumferential direction. The pipe I 4 and the pipe II 6 are arranged inside the drum 1. Inside the drum 1, a spiral blade 9 is provided. The spiral blade 9 is fixedly connected to the outer walls of the pipe I 4 and the pipe II 6. The pitch of the spiral blade 9 gradually decreases when approaching the solid phase outlet 1a. Inside the end cover 2, a bearing assembly II 10 is rotatably connected. The left end of the pipe I 4 is fixedly connected to the right end of the bearing assembly II 10, and it is sealed between the pipe I 4 and the bearing assembly II 10.

[0028] It also includes a shell 13 covering the drum 1, bearing assembly I3 and bearing assembly II10. The drum 1, bearing assembly I3 and bearing assembly II10 are all rotatably connected to the shell 13. Channel I and channel II are respectively provided on the left and right sides of the shell 13. Channel I is connected to the liquid phase outlet 2a, and channel II is connected to the solid phase outlet 1a.

[0029] The right side of the housing 13 is fixedly connected with the inner housing 13a to form a solid phase chamber for gathering solid phase. In the solid phase chamber, the mud will gradually gather on the inner wall of the housing 13 to form an integrated mud pile. To solve this problem, the following solution is adopted:

[0030] refer to Figures 3 to 5 A base 9c is fixedly connected to the outer wall of the frustum-shaped wall body, and a main cutter head 9d is fixedly connected to the base 9c. An auxiliary cutter head 9e fixed to the base 9c is arranged on the left and right sides of the main cutter head 9d. The main cutter head 9d protrudes from the auxiliary cutter head 9e in the radial direction. When the main cutter head 9d and the auxiliary cutter head 9e are installed, they are tilted 3° counterclockwise relative to the reference line perpendicular to the axis of the drum 1 to reduce the squeezing of the cover shell 13 by the main cutter head 9d during operation. The main cutter head 9d and the solid phase outlet 1a are located in the radial direction of the same axial segment, so that the two auxiliary cutter heads 9e are respectively located on the left and right sides of the solid phase outlet 1a, which is convenient for scraping part of the mud pile from the inner wall of the cover shell 13.

[0031] The bearing assembly II 10 is driven to rotate by the auxiliary motor 11. The auxiliary motor 11 can be Figure 1 As shown, the coupling is fixedly connected to the output shaft of the first motor, and then the coupling is connected to the differential transmission. The output end of the differential is directly fixed to the bearing assembly II10, so that after starting the first motor, the bearing assembly II10 is used to drive the tube I4 to rotate; the bearing assembly I3 is driven by the main motor 12 to rotate. The main motor 12 can be the second motor and is connected to the bearing assembly I3 through the pulley belt assembly, so that the bearing assembly I3 drives the drum 1 to rotate, and finally the drum 1 and the tube I4 are differentially rotated in the same direction. When the drum 1 is stationary, the spiral tube also rotates at a low speed, driving the spiral blade 9 to push the material to the right.

[0032] Based on the above-mentioned related transmission embodiments, and the structures that should be supported, such as the fixed positions of the auxiliary motor 11, the main motor 12, the reducer, the differential and the cover, a person skilled in the art can understand the specific meanings of the above-mentioned terms in the present invention according to specific circumstances, and all other embodiments obtained by a person skilled in the art without making any creative work are within the scope of protection of the present utility model.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the term "fixed connection" should be understood in a broad sense. For example, it can be a fixed connection using a bolt-nut assembly, or a detachable connection, or an integral connection, or a welded connection. The sealing inside the centrifuge is a conventional technical means. Figure 3 In, the approximate positions of the bearings and the seals are also given. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] A vibration intensity measuring instrument 14 is fixedly connected to the shells of the bearing assembly I 3 and the bearing assembly II 10 respectively, so as to measure the vibration intensities of the auxiliary motor 11 and the main motor 12 in the X-axis and Y-axis directions. This can more comprehensively reflect the overall vibration situation of the centrifuge. Users can pay attention to the operation of the centrifuge in a timely manner according to the actual vibration values. It is convenient to realize remote operation and automatic control.

[0035] A reinforcement structure 9b is fixedly connected to the outer edge of the sludge pushing section of the spiral blade 9. The reinforcement structure 9b is made of YG8 hard alloy. The main cutting head 9d and the secondary cutting head 9e are made of YG8 hard alloy.

Claims

1. An acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications, characterized by: The invention comprises a tube I (4), characterized in that a partition plate (5) is fixedly connected to the right end of the tube I (4), a tube II (6) is fixedly connected to the right end of the partition plate (5), a straight feed tube I (7a) is fixedly connected inside the tube II (6), the tube II (6) and the feed tube I (7a) are coaxially arranged, a separation chamber is formed between the partition plate (5), the tube II (6) and the feed tube I (7a), a feed port (6a) connected to the separation chamber is arranged on the tube II (6), a bearing assembly I (3) is rotatably connected to the inner wall of the right end of the tube II (6), a feed tube II (7b) is rotatably connected inside the bearing assembly I (3), and the left end of the feed tube II (7b) is connected to the feed tube I (7a).

2. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 1 is characterized in that: A material distributor (8) fixedly connected to the partition plate (5) or the tube II (6) is arranged in the separation chamber. The right end face of the material distributor (8) is triangular, and the tip of the material distributor (8) faces rightward.

3. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 1 or 2, characterized in that: The tube I (4) is provided with a liquid guide port (4a).

4. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 3 is characterized in that: The invention also comprises a rotating drum (1), wherein the rotating drum (1) comprises a cylindrical wall body located on the left side, and a frustum-shaped wall body fixedly connected to the right end of the cylindrical wall body, wherein the inner diameter of the frustum-shaped wall body decreases from left to right, a solid phase outlet (1a) is arranged on the right part of the frustum-shaped wall body, and the solid phase outlet (1a) is connected to the inside of the rotating drum (1), an end cover (2) is fixedly connected to the left end of the cylindrical wall body, and a liquid phase outlet (2a) is arranged on the left end of the end cover (2), a pipe I (4) and a pipe II (6) are arranged in the rotating drum (1), and a bearing assembly I (3) is arranged in the rotating drum (1). The feed pipe II (7b) is fixedly connected to the right end of the frustum-shaped wall body, and the feed pipe II (7b) is fixedly connected to the support. A spiral blade (9) is arranged in the drum (1). The spiral blade (9) is fixedly connected to the outer wall of the pipe I (4) and the pipe II (6). The pitch of the spiral blade (9) gradually decreases when approaching the solid phase outlet (1a). A bearing assembly II (10) is rotatably connected in the end cover (2). The left end of the pipe I (4) is fixedly connected to the right end of the bearing assembly II (10), and the pipe I (4) and the bearing assembly II (10) are sealed.

5. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 4 is characterized in that: The bearing assembly II (10) is driven to rotate by the auxiliary motor (11), and the bearing assembly I (3) is driven to rotate by the main motor (12), so that the drum (1) and the tube I (4) can rotate in the same direction at differential speeds.

6. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 5 is characterized in that: A vibration intensity measuring instrument (14) is respectively installed on the bearing assembly I (3) and the bearing assembly II (10).

7. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 4 is characterized in that: The invention also comprises a housing (13) which is covered on the rotating drum (1), the bearing assembly I (3) and the bearing assembly II (10); the rotating drum (1), the bearing assembly I (3) and the bearing assembly II (10) are all rotatably connected to the housing (13); a channel I and a channel II are respectively arranged on the left and right sides of the housing (13); the channel I is connected to the liquid phase outlet (2a), and the channel II is connected to the solid phase outlet (1a).

8. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 7 is characterized in that: A base (9c) is fixedly connected to the outer wall of the cone-shaped wall body, a main cutting head (9d) is fixedly connected to the base (9c), and an auxiliary cutting head (9e) fixedly connected to the base (9c) is arranged on the left and right sides of the main cutting head (9d), the main cutting head (9d) protrudes from the auxiliary cutting head (9e) in the radial direction, and when the main cutting head (9d) and the auxiliary cutting head (9e) are installed, they are tilted 3° counterclockwise relative to a reference line perpendicular to the axis of the rotating drum (1), and the main cutting head (9d) and the solid phase outlet (1a) are located in the radial direction of the same axis segment.

9. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 8, characterized in that: The base (9c) is made of carbon steel, and the main blade head (9d) and the auxiliary blade head (9e) are made of YG8 hard alloy.

10. The acoustic field coordinated horizontal screw centrifuge for high ash and high hardness applications according to claim 4, characterized in that: The outer edge of the mud pushing section of the spiral blade (9) is fixedly connected with a reinforcement structure (9b), and the reinforcement structure (9b) is made of YG8 hard alloy.

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