A recirculation ratio controller

Abstract

The utility model relates to reflux ratio control technology field especially relates to a kind of reflux ratio controller.The reflux ratio controller includes cylinder, the inner chamber bottom of cylinder is equipped with baffle, and the side of cylinder is installed pipe, and the inner chamber bottom of cylinder is separated into first cavity and second cavity by baffle, and first cavity is communicated with reflux pipe, and second cavity is communicated with production pipe;Cylinder cover, is installed in the top of cylinder, and the middle part of cylinder cover is embedded with feed pipe;Mounting seat, fixedly installed in the inner chamber side of cylinder, and the sleeve pipe is rotatably installed on mounting seat, the sleeve pipe is fixedly provided with the distribution hopper on, distribution hopper, sleeve pipe and feed pipe all be located on the central axis of cylinder, and all be located above baffle, and the end of sleeve pipe away from mounting seat is fixedly installed with transmission rod, and the end of transmission rod away from sleeve pipe is inserted into installation pipe, and installation pipe is installed with magnetic drive assembly, which drives transmission rod to rotate.The reflux ratio controller provided by the utility model has the advantages of simple structure and reliable sealing.

Description

Technical Field

[0001] This utility model relates to the field of reflux ratio control technology, and in particular to a reflux ratio controller. Background Technology

[0002] A reflux ratio controller is a device that controls the ratio of reflux to product using a solenoid valve or time-delay relay. It can be installed inside or outside a distillation column. Its core function is to adjust the ratio of reflux to product within the distillation column. Currently, a known reflux ratio controller consists of a cylinder, an internal flow-dividing structure, a pneumatic or electromagnetic drive structure, a control system, a drive shaft, drive shaft mounting, and seals. The internal flow-dividing structure, drive rod, drive rod mounting, and seals are fixed to a flange plate, which is connected to the cylinder. The control system then controls the pneumatic or electromagnetic drive structure to drive the drive rod in reciprocating or rotary motion, thus achieving the flow-dividing effect. The torque transmission of this type of reflux ratio controller is achieved through a directly connected drive rod.

[0003] This transmission method dictates that only packing or O-rings can be used for sealing, resulting in a dynamic seal. It cannot meet sealing requirements under conditions of strong alkali, strong acid, high temperature, high pressure, toxicity, flammability, or explosiveness.

[0004] Therefore, it is necessary to provide a new reflux ratio controller to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a reflux ratio controller.

[0006] The reflux ratio controller provided by this utility model includes: a cylinder, a partition plate provided at the bottom of the inner cavity of the cylinder, a pipe installed on one side of the cylinder, the partition plate dividing the bottom of the inner cavity of the cylinder into a first cavity and a second cavity, the first cavity being connected to a reflux pipe, and the second cavity being connected to a collection pipe;

[0007] A cylinder cover is installed at the top of the cylinder body, and a feed pipe is embedded in the middle of the cylinder cover;

[0008] A mounting base is fixedly installed on one side of the inner cavity of the cylinder, and a sleeve is rotatably installed on the mounting base. A material distribution hopper is fixedly fitted on the sleeve. The material distribution hopper, the sleeve, and the feed pipe are all located on the central axis of the cylinder and are all located directly above the partition plate. A transmission rod is fixedly installed on the end of the sleeve away from the mounting base. The end of the transmission rod away from the sleeve is inserted into the mounting tube. A magnetic drive assembly for driving the transmission rod to rotate is installed on the mounting tube.

[0009] Preferably, the cover and the body are detachably connected by bolts via a flange, and a sealing ring is installed on the mating surface of the cover and the body.

[0010] Preferably, the magnetic drive assembly includes an isolation cover, which is fixedly installed at one end of the mounting tube and seals the mounting tube. An isolation plate is fixedly installed in the middle of the inner cavity of the isolation cover. Permanent magnet a and permanent magnet b are rotatably installed on both sides of the isolation plate inside the isolation cover. A drive shaft is coaxially fixedly installed on permanent magnet a, and a driven shaft is coaxially fixedly installed on permanent magnet b. One end of the driven shaft extending into the mounting tube is fixedly connected to a transmission rod. A sealing cover is installed at the end of the isolation cover away from the mounting tube. The sealing cover has a through hole for the drive shaft to pass through, and a cylinder for driving the drive shaft to rotate is installed on the sealing cover.

[0011] Preferably, the permanent magnet a and the permanent magnet b are magnetically attracted to each other, and the isolation plate is a non-magnetic medium.

[0012] Preferably, the through hole on the sealing cover is fitted with a bearing for supporting the rotation of the drive shaft.

[0013] Preferably, a control box for controlling the rotation of the cylinder is fixedly mounted on the sealing cover by a bracket, and the control box is also connected to a host computer.

[0014] Preferably, an observation window is also fitted on one side of the cylinder.

[0015] Compared with related technologies, the reflux ratio controller provided by this utility model has the following advantages:

[0016] This utility model provides a reflux ratio controller. The controller uses a control box to control a cylinder as a power source and a magnetic drive assembly to drive the distribution hopper to rotate, thereby achieving the purpose of reflux ratio controller diversion. This magnetic drive fixes the main and slave half shafts in an isolation cover. The magnetic drive assembly does not come into contact with the material and does not require shaft seals. Only the static seal of the flange end face is required, thereby improving the sealing reliability of the entire reflux ratio controller, meeting the sealing requirements of harsh working conditions, and eliminating the situation of high maintenance frequency and low equipment utilization caused by poor sealing and easy damage to sealing components. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the reflux ratio controller provided by this utility model;

[0018] Figure 2 A cross-sectional structural schematic diagram of the reflux ratio controller provided by this utility model;

[0019] Figure 3 Another cross-sectional structural schematic diagram of the reflux ratio controller provided by this utility model;

[0020] Figure 4A schematic diagram of the structure of the installation tube on which the magnetic drive assembly is installed, provided by this utility model.

[0021] The following are the labels in the diagram: 1. Cylinder; 11. Partition plate; 12. Mounting pipe; 13. Observation window; 101. First cavity; 102. Second cavity; 2. Return pipe; 3. Outlet pipe; 4. Cylinder cover; 5. Feed pipe; 6. Mounting base; 61. Sleeve; 62. Transmission rod; 7. Distributor hopper; 8. Magnetic drive assembly; 81. Isolation cover; 82. Isolation plate; 83. Permanent magnet a; 84. Drive shaft; 85. Sealing cover; 86. Cylinder; 87. Permanent magnet b; 88. Driven shaft; 9. Control box. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 4 This utility model provides a reflux ratio controller, the reflux ratio controller comprising:

[0025] The cylinder 1 has a partition 11 at the bottom of its inner cavity and a pipe 12 installed on one side of the cylinder 1. The partition 11 divides the bottom of the inner cavity of the cylinder 1 into a first cavity 101 and a second cavity 102. The first cavity 101 is connected to a return pipe 2 and the second cavity 102 is connected to a sampling pipe 3.

[0026] A cylinder cover 4 is installed at the top of the cylinder body 1, and a feed pipe 5 is embedded in the middle of the cylinder cover 4;

[0027] Mounting base 6 is fixedly installed on one side of the inner cavity of the cylinder 1, and a sleeve 61 is rotatably installed on the mounting base 6. A material distribution hopper 7 is fixedly sleeved on the sleeve 61. The material distribution hopper 7, the sleeve 61, and the feed pipe 5 are all located on the central axis of the cylinder 1 and are all located directly above the partition plate 11. A transmission rod 62 is fixedly installed on the end of the sleeve 61 away from the mounting base 6. The end of the transmission rod 62 away from the sleeve 61 is inserted into the mounting tube 12. A magnetic drive assembly 8 for driving the transmission rod 62 to rotate is installed on the mounting tube 12.

[0028] It should be noted that during use, the reflux ratio controller is connected to the pipeline of the distillation column. The liquid phase is introduced into the distribution hopper 7 from the feed pipe 5. When it is necessary to control the liquid reflux, the magnetic drive assembly 8 drives the transmission rod 62 to rotate the sleeve 61 and the distribution hopper 7 from the initial position to the end position, thereby rotating the bottom outlet of the distribution hopper 7 to face the first cavity 101. At this time, the liquid flows out through the reflux pipe 2 for reflux. When it is necessary to drain the liquid, the magnetic drive assembly 8 drives the transmission rod 62 to reset the sleeve 61 and the distribution hopper 7 from the end position to the initial position, thereby rotating the bottom outlet of the distribution hopper 7 to face the second cavity 102. At this time, the liquid is discharged from the collection pipe 3, thus completing the reflux ratio control.

[0029] In the embodiments of this utility model, please refer to Figures 1 to 4 The cylinder cover 4 and the cylinder body 1 are detachably connected by bolts through a flange, and a sealing ring is installed on the mating surface of the cylinder cover 4 and the cylinder body 1.

[0030] It should be noted that the cylinder cover 4 and the cylinder body 1 are detachable, which makes it easy to install the material hopper 7 and the mounting base 6 inside the cylinder body 1.

[0031] In the embodiments of this utility model, please refer to Figures 1 to 4 The magnetic drive assembly 8 includes an isolation cover 81, which is fixedly installed at one end of the mounting tube 12 and seals the mounting tube 12. An isolation plate 82 is fixedly installed in the middle of the inner cavity of the isolation cover 81. Permanent magnets a83 and b87 are rotatably installed on both sides of the isolation plate 82 inside the isolation cover 81. A drive shaft 84 is coaxially fixedly installed on the permanent magnet a83, and a driven shaft 88 is coaxially fixedly installed on the permanent magnet b87. One end of the driven shaft 88 extends into the mounting tube 12 and is fixedly connected to the transmission rod 62. A sealing cover 85 is installed at the end of the isolation cover 81 away from the mounting tube 12. A through hole is opened on the sealing cover 85 for the drive shaft 84 to pass through, and a cylinder 86 for driving the drive shaft 84 to rotate is installed on the sealing cover 85.

[0032] The permanent magnets a83 and b87 are magnetically attracted to each other, and the isolation plate 82 is a non-magnetic medium; the through hole in the sealing cover 85 is fitted with a bearing for supporting the rotation of the drive shaft 84.

[0033] It should be noted that: When the cylinder 86 drives the drive shaft 84 to rotate, the drive shaft 84 drives the permanent magnet a83 to rotate synchronously. When the permanent magnet a83 rotates, it is magnetically attracted to the permanent magnet b87, which in turn drives the driven shaft 88 to rotate synchronously. Finally, the transmission rod 62 drives the sleeve 61 to drive the distribution hopper 7 to rotate, which is used to switch between connecting it to the first cavity 101 or the second cavity 102. In this non-contact transmission method, the drive shaft 84 does not come into contact with the material and does not require a shaft seal. Only the static seal of the flange end face of the isolation cover 81 is required, which greatly improves the sealing reliability of the overall reflux ratio controller.

[0034] Furthermore, in order to reduce the magnetic interference of external magnetic fields on permanent magnets a83 and b87, a magnetic shield can be added to the isolation cover 81. A graphite layer can be provided on the end face of the isolation plate 82 that contacts permanent magnets a83 and b87 to lubricate the contact surface, so as to facilitate the rotation of permanent magnets a83 and b87 within the isolation cover 81.

[0035] In this embodiment, a control box 9 for controlling the rotation of the cylinder 86 is fixedly installed on the sealing cover 85 by a bracket. The control box 9 is also connected to a host computer, so that the host computer can remotely send instructions to the control box 9 to control the cylinder 86 to drive the drive shaft 84, driven shaft 88 and transmission rod 62 to drive the material hopper 7 to rotate, thereby realizing the reflux ratio control.

[0036] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 An observation window 13 is also fitted on one side of the cylinder 1;

[0037] It should be noted that this allows for observation of the flow distribution inside the cylinder 1 using the observation window 13 made of transparent glass that is resistant to high temperatures and acids and alkalis when adjusting the reflux ratio controller.

[0038] The working principle of the reflux ratio controller provided by this utility model is as follows: In use, the reflux ratio controller is connected to the pipeline of the distillation column. The liquid phase is introduced into the distribution hopper 7 from the feed pipe 5. When it is necessary to control the liquid reflux, the transmission rod 62 is driven by the magnetic drive assembly 8 to drive the sleeve 61 and the distribution hopper 7 to rotate from the initial position to the end position, thereby rotating the bottom outlet of the distribution hopper 7 to face the first cavity 101. At this time, the liquid flows out through the reflux pipe 2 for reflux. When it is necessary to drain the liquid, the transmission rod 62 is driven by the magnetic drive assembly 8 to drive the sleeve 61 and the distribution hopper 7 to reset from the end position to the initial position, thereby rotating the bottom outlet of the distribution hopper 7 to face the second cavity 102. At this time, the liquid is discharged from the collection pipe 3, thus completing the reflux ratio control.

[0039] When the magnetic drive assembly 8 is in use, the cylinder 86 drives the drive shaft 84 to rotate, which in turn drives the permanent magnet a83 to rotate synchronously. When the permanent magnet a83 rotates, it is magnetically attracted to the permanent magnet b87, which in turn drives the driven shaft 88 to rotate synchronously. Finally, the transmission rod 62 drives the sleeve 61 to drive the distribution hopper 7 to rotate, which is used to switch between connecting it to the first cavity 101 or the second cavity 102. In this non-contact transmission method, the drive shaft 84 does not come into contact with the material and does not require a shaft seal. Only the static seal of the flange end face of the isolation cover 81 is required, which greatly improves the sealing reliability of the overall reflux ratio controller.

[0040] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A reflux ratio controller, comprising: A cylindrical body (1) is provided with a partition (11) at the bottom of its inner cavity. A pipe (12) is installed on one side of the cylindrical body (1). The partition (11) divides the bottom of the inner cavity of the cylindrical body (1) into a first cavity (101) and a second cavity (102). The first cavity (101) is connected to a return pipe (2), and the second cavity (102) is connected to a collection pipe (3). Its characteristic is that it further includes: A cylinder cover (4) is installed at the top of the cylinder (1), and a feed pipe (5) is embedded in the middle of the cylinder cover (4); Mounting base (6) is fixedly installed on one side of the inner cavity of the cylinder (1), and a sleeve (61) is rotatably installed on the mounting base (6). A distributing hopper (7) is fixedly sleeved on the sleeve (61). The distributing hopper (7), sleeve (61) and feed pipe (5) are all located on the central axis of the cylinder (1) and are all located directly above the partition plate (11). A transmission rod (62) is fixedly installed on one end of the sleeve (61) away from the mounting base (6). The other end of the transmission rod (62) away from the sleeve (61) is inserted into the mounting tube (12). A magnetic drive assembly (8) for driving the transmission rod (62) to rotate is installed on the mounting tube (12).

2. The reflux ratio controller according to claim 1, characterized in that, The cover (4) and the body (1) are detachably connected by bolts through a flange, and a sealing ring is installed on the mating surface of the cover (4) and the body (1).

3. The reflux ratio controller according to claim 1, characterized in that, The magnetic drive assembly (8) includes an isolation cover (81), which is fixedly installed at one end of the mounting tube (12) and seals the mounting tube (12). An isolation plate (82) is fixedly installed in the middle of the inner cavity of the isolation cover (81). Permanent magnets a (83) and b (87) are rotatably installed on both sides of the isolation plate (82) inside the isolation cover (81). A drive shaft (84) is coaxially fixedly installed on the permanent magnet a (83). The permanent magnet b (87) is coaxially fixedly mounted with a driven shaft (88). One end of the driven shaft (88) extends into the mounting tube (12) and is fixedly connected to the transmission rod (62). The isolation cover (81) is mounted with a sealing cover (85) at the end away from the mounting tube (12). The sealing cover (85) has a through hole for the drive shaft (84) to pass through, and a cylinder (86) for driving the drive shaft (84) to rotate is mounted on the sealing cover (85).

4. The reflux ratio controller according to claim 3, characterized in that, The permanent magnets a (83) and b (87) are magnetically attracted to each other, and the isolation plate (82) is a non-magnetic medium.

5. The reflux ratio controller according to claim 3, characterized in that, The through hole on the sealing cap (85) is fitted with a bearing for supporting the rotation of the drive shaft (84).

6. The reflux ratio controller according to claim 3, characterized in that, The sealing cover (85) is fixedly mounted with a control box (9) for controlling the rotation of the cylinder (86) by a bracket. The control box (9) is also connected to a host computer.

7. The reflux ratio controller according to claim 1, characterized in that, An observation window (13) is also fitted on one side of the cylinder (1).

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