Detachable and cleanable sieve plate extraction tower

Abstract

The utility model relates to the technical field of extraction towers, and particularly discloses a detachable and cleanable sieve plate extraction tower, which comprises a tower body and a plurality of sieve plates positioned in the tower body and distributed up and down, the outer walls of the plurality of sieve plates are fixedly connected with filler cylinders attached to the inner wall of the tower body, the lower edges of the plurality of filler cylinders are fixedly connected with first sealing rings, and the first sealing rings are fixedly connected with second sealing rings. A jacking assembly is arranged below the multiple filling barrels, the jacking assembly comprises a hydraulic cylinder installed at the lower end of the tower body, and the output end of the hydraulic cylinder penetrates through the outer wall of the tower body and is fixedly connected with a circular plate; during cleaning, the hydraulic cylinders push the supporting rings to jack the filler barrels layer by layer to be higher than the upper edge of the tower body, an operator can take out each layer of filler barrel in sequence from top to bottom and directly pour internal filler without layer-by-layer digging, meanwhile, the sieve plates are convenient to clean, the maintenance process of the multi-layer sieve plates is remarkably simplified, the filler taking-out difficulty and the working intensity are reduced, and the working efficiency is improved. The defect that a traditional structure is tedious in cleaning is effectively overcome.

Description

Technical Field

[0001] This utility model relates to the field of extraction tower technology, and specifically discloses a detachable and cleanable sieve plate extraction tower. Background Technology

[0002] Extraction, also known as solvent extraction or liquid-liquid extraction, is a unit operation that separates components in a mixture by utilizing the differences in solubility or partition coefficients of the components in immiscible (or slightly soluble) solvents. This method extracts the target substance from a solid or liquid mixture through the transfer of solute between two solvents and is widely used in chemical, metallurgical, food, and petroleum refining industries. The sieve plate extraction tower, as the core equipment of liquid-liquid extraction, uses a combination of multiple sieve plates and packing material to create countercurrent contact between the light and heavy liquids within the tower, thus completing the mass transfer.

[0003] Traditional sieve plate extraction towers typically use fasteners to fix the sieve plates to the inner wall of the tower, with packing material filling the spaces between adjacent sieve plates to enhance mass transfer. However, when cleaning the sieve plates and removing the packing material, the bolts must be unfastened layer by layer from top to bottom, and the sieve plates and packing material must be removed sequentially. This means that for each layer of sieve plates to be removed, the packing material beneath it must be removed before the next layer can be disassembled. This layer-by-layer disassembly method is not only cumbersome and time-consuming, but also, because the packing material is tightly packed inside the tower, requires manual excavation to remove it layer by layer, further increasing the cleaning difficulty and workload. Therefore, a detachable and cleanable sieve plate extraction tower is needed to solve this problem. Utility Model Content

[0004] This invention proposes a detachable and cleanable sieve plate extraction tower. Through innovative structural design, the cleaning operation of multi-layer sieve plates is simple and convenient, while avoiding the drawbacks of traditional packing material that requires digging out layer by layer, significantly reducing the difficulty and intensity of operation when removing the packing material.

[0005] This utility model is implemented as follows: a detachable and cleanable sieve plate extraction tower includes a tower body and multiple sieve plates located inside the tower body and distributed vertically. The outer walls of the multiple sieve plates are fixedly connected to packing cylinders that fit against the inner wall of the tower body. The lower edges of the multiple packing cylinders are fixedly connected to first sealing rings. A lifting assembly is provided below the multiple packing cylinders. The lifting assembly includes a hydraulic cylinder installed at the lower end of the tower body. The output end of the hydraulic cylinder passes through the outer wall of the tower body and is fixedly connected to a circular plate. A support ring is provided above the circular plate that abuts against the first sealing ring located at the lowest side. Multiple inclined rods distributed in a circumferential array are fixedly connected between the support ring and the circular plate.

[0006] A pressure detection mechanism is provided above the multiple packing cylinders. The pressure detection mechanism includes a top cover fitted onto the outer wall of the tower body. A mounting cover is fixedly connected to the upper end of the top cover. A pressure sensor is fixedly connected inside the mounting cover. An annular groove is formed on the upper side of the inner wall of the tower body. A matching disc is inserted into the annular groove. A pressure-bearing ring is provided below the disc, which is in contact with the inner wall of the tower body and abuts against the packing cylinder located on the uppermost side. Multiple straight rods arranged in a circumferential array are fixedly connected between the pressure-bearing ring and the disc. An extrusion column is fixedly connected to the upper end of the disc, which abuts against the lower end of the pressure sensor. A controller is installed at the lower end of the tower body.

[0007] A sealing and fixing component is provided on the outer side of the top cover.

[0008] As a preferred embodiment of the detachable and cleanable sieve plate extraction tower of this utility model, the sealing and fixing assembly includes a first connecting ring fixedly connected to the outer wall of the top cover, a second connecting ring fixedly connected to the outer wall of the tower body, a second sealing ring fixedly connected to the upper end of the second connecting ring and abutting against the lower edge of the top cover, and the first connecting ring and the second connecting ring are fixedly connected by a plurality of bolts.

[0009] As a preferred embodiment of the detachable and cleanable sieve plate extraction tower of this utility model, the outer wall of the tower body is connected to a heavy liquid inlet located above the pressure ring, the outer wall of the tower body is connected to a light liquid inlet located below the support ring, the bottom side of the tower body is connected to a heavy liquid outlet, and the outer wall of the tower body is connected to a light liquid outlet located above the pressure ring. The other ends of the heavy liquid inlet, light liquid inlet, heavy liquid outlet, and light liquid outlet are all equipped with flanges.

[0010] In a preferred embodiment of this utility model of a detachable and cleanable sieve plate extraction tower, the support ring is fitted to the inner wall of the tower body.

[0011] As a preferred embodiment of the detachable and cleanable sieve plate extraction tower of this utility model, the pressure sensor is a waterproof spoke-type pressure sensor.

[0012] In a preferred embodiment of the detachable and cleanable sieve plate extraction tower of this utility model, multiple first and second sealing rings are made of fluororubber.

[0013] As a preferred embodiment of the detachable and cleanable sieve plate extraction tower of this utility model, the outer wall of the tower body is fixedly connected to two symmetrically distributed mounting brackets, each of which has multiple mounting holes.

[0014] The beneficial effects of this utility model are:

[0015] This device features an innovative structural design. Packing cylinders, with their outer walls fitting snugly against the inner wall of the tower, are sequentially installed inside the tower. The packing cylinders are filled with filler material, and sealing rings are used to press and seal each layer. A hydraulic cylinder drives a support ring at the bottom, causing the entire packing cylinder to rise and fall. During cleaning, the hydraulic cylinder pushes the support ring to lift the packing cylinders layer by layer above the top edge of the tower. Operators can then remove each layer of packing cylinders from top to bottom and directly empty the internal filler material, eliminating the need for layer-by-layer excavation. This also facilitates the cleaning of the screen plates, significantly simplifying the maintenance process for multi-layer screen plates, reducing the difficulty and intensity of filler removal, and effectively solving the drawbacks of cumbersome cleaning methods in traditional structures. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a front cross-sectional view of the detachable and cleanable sieve plate extraction tower of this utility model.

[0018] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a partial left-side cross-sectional view of the present invention;

[0020] Figure 4 This is a partial structural diagram of the present invention.

[0021] The markings in the diagram are: 1. Tower body; 2. Sieve plate; 3. Packing cylinder; 4. First sealing ring; 5. Hydraulic cylinder; 6. Circular plate; 7. Diagonal rod; 8. Support ring; 9. Controller; 10. Top cover; 11. Annular groove; 12. Disc; 13. Straight rod; 14. Pressure ring; 15. Mounting cover; 16. Pressure sensor; 17. Extrusion column; 18. First connecting ring; 19. Second connecting ring; 20. Second sealing ring; 21. Mounting frame; 22. Heavy liquid outlet; 23. Light liquid inlet; 24. Heavy liquid inlet; 25. Light liquid outlet. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-4A detachable and cleanable sieve plate extraction tower includes a tower body 1 and multiple sieve plates 2 located inside the tower body 1 and distributed vertically. The outer walls of the multiple sieve plates 2 are fixedly connected to packing cylinders 3 that fit against the inner wall of the tower body 1. The lower edges of the multiple packing cylinders 3 are fixedly connected to first sealing rings 4. A lifting assembly is provided below the multiple packing cylinders 3. The lifting assembly includes a hydraulic cylinder 5 installed at the lower end of the tower body 1. The output end of the hydraulic cylinder 5 passes through the outer wall of the tower body 1 and is fixedly connected to a circular plate 6. A support ring 8 is provided above the circular plate 6 that abuts against the first sealing ring 4 located at the lowest side. Multiple inclined rods 7 arranged in a circumferential array are fixedly connected between the support ring 8 and the circular plate 6.

[0024] A pressure detection mechanism is provided above multiple packing cylinders 3. The pressure detection mechanism includes a top cover 10 sleeved on the outer wall of the tower body 1. A mounting cover 15 is fixedly connected through the upper end of the top cover 10. A pressure sensor 16 is fixedly connected inside the mounting cover 15. An annular groove 11 is opened on the upper side of the inner wall of the tower body 1. A matching disc 12 is inserted into the annular groove 11. A pressure ring 14 is provided below the disc 12, which is attached to the inner wall of the tower body 1 and abuts against the packing cylinder 3 located on the uppermost side. Multiple straight rods 13 arranged in a circumferential array are fixedly connected between the pressure ring 14 and the disc 12. An extrusion column 17 that abuts against the lower end of the pressure sensor 16 is fixedly connected to the upper end of the disc 12. A controller 9 is installed at the lower end of the tower body 1.

[0025] A sealing and fixing component is provided on the outer side of the top cover 10.

[0026] In this embodiment: multiple packing cylinders 3 with sieve plates 2 are sequentially installed into the tower body 1. The packing cylinders 3 are filled with packing material, so that the outer wall of the packing cylinder 3 is in contact with the inner wall of the tower body 1. The first sealing ring 4 at the lower edge of each packing cylinder 3 contacts the upper edge of the lower packing cylinder 3, and the first sealing ring 4 of the bottommost packing cylinder 3 contacts the upper end of the support ring 8. The initial position of the circular plate 6 is close to the bottom end of the inner wall of the tower body 1.

[0027] Then, the pressure ring 14 is inserted into the inner wall of the tower body 1, and the disc 12 is made to fit against the inner wall of the annular groove 11, so that the pressure ring 14 comes into contact with the uppermost packing cylinder 3. Then, the top cover 10 is fitted onto the outer wall of the tower body 1, and a top tight seal is formed by the sealing and fixing components.

[0028] Then, the hydraulic cylinder 5 installed at the lower end of the tower body 1 is activated. Its output end pushes the circular plate 6 to move upward. The support ring 8 is driven to rise synchronously through the circumferentially distributed inclined rods 7. At the same time, it pushes multiple packing cylinders 3, pressure rings 14, multiple straight rods 13, discs 12 and extrusion columns 17 to move upward until the extrusion column 17 abuts against the lower end of the pressure sensor 16. When the upward thrust continues to be applied, the pressure sensor 16 detects the pressure signal in real time and transmits it to the controller 9. When the pressure value reaches the preset sealing threshold, the controller 9 controls the hydraulic cylinder 5 to stop moving and maintain the current output state, so that multiple first sealing rings 4 are subjected to appropriate pressure, ensuring that liquid does not pass through the gap between the outer wall of multiple packing cylinders 3 and the inner wall of the tower body 1.

[0029] In use, the light liquid enters from the light liquid inlet 23 at the lower end of the tower body 1 and flows upward through the space below the support ring 8, while the heavy liquid enters from the heavy liquid inlet 24 at the upper end of the tower body 1 and flows downward through the space above the pressure ring 14. The light liquid and heavy liquid come into countercurrent contact in the multi-layer sieve plate 2 and the packing cylinder 3, and mass transfer and mixing are achieved through the channels of the sieve plate 2 and the packing layer. Finally, the heavy liquid is discharged from the heavy liquid outlet 22 at the bottom of the tower, and the light liquid is discharged from the light liquid outlet 25.

[0030] When cleaning the sieve plate 2 and removing the packing, the top cover 10 is released by the sealing and fixing assembly, and then the top cover 10 is removed. The disc 12 along with the pressure ring 14 is also removed. Then, the hydraulic cylinder 5 is restarted, and its output end drives the support ring 8 to push multiple packing cylinders 3 upwards simultaneously. When the height of the uppermost packing cylinder 3 is higher than the height of the uppermost tower body 1, the hydraulic cylinder 5 is stopped. At this time, the uppermost packing cylinder 3 can be removed, and the packing inside the uppermost packing cylinder 3 can be directly poured out. Then, the output end of the hydraulic cylinder 5 extends a certain distance so that the height of the uppermost second packing cylinder 3 is higher than the height of the uppermost tower body 1. The second packing cylinder 3 is removed, and the packing is poured out. This process is repeated until all the packing cylinders 3 are removed and the packing is poured out. The sieve plate 2 can then be cleaned. Through innovative structural design, the cleaning operation of the multi-layer sieve plate 2 is simple and convenient, while avoiding the drawbacks of traditional packing layer-by-layer digging, significantly reducing the difficulty and intensity of packing removal.

[0031] As a technical optimization of this utility model, the sealing and fixing assembly includes a first connecting ring 18 fixedly connected to the outer wall of the top cover 10, a second connecting ring 19 fixedly connected to the outer wall of the tower body 1, a second sealing ring 20 that abuts against the lower edge of the top cover 10 fixedly connected to the upper end of the second connecting ring 19, and the first connecting ring 18 and the second connecting ring 19 are fixedly connected by a plurality of bolts.

[0032] In this embodiment: the first connecting ring 18 and the second connecting ring 19 are fixed by multiple bolts until the top cover 10 and the second sealing ring 20 are pressed tightly together to form a top seal.

[0033] As a technical optimization of this utility model, the outer wall of the tower body 1 is connected to a heavy liquid inlet 24 located above the pressure ring 14, the outer wall of the tower body 1 is connected to a light liquid inlet 23 located below the support ring 8, the bottom side of the tower body 1 is connected to a heavy liquid outlet 22, and the outer wall of the tower body 1 is connected to a light liquid outlet 25 located above the pressure ring 14. The other ends of the heavy liquid inlet 24, light liquid inlet 23, heavy liquid outlet 22 and light liquid outlet 25 are all equipped with flanges.

[0034] In this embodiment: the light liquid enters from the light liquid inlet 23 below the support ring 8 and flows upward through the holes of the sieve plate 2 of the packing cylinder 3. The heavy liquid enters from the heavy liquid inlet 24 above the pressure ring 14 and flows downward along the gap between the outer wall of the packing cylinder 3 and the tower body 1, contacting the light liquid in the opposite direction. The heavy liquid inlet 24, the light liquid inlet 23, the heavy liquid outlet 22, and the light liquid outlet 25 are connected to the external pipeline through flanges, and the bolts are tightened to ensure a seal.

[0035] As a technical optimization of this utility model, the support ring 8 is fitted to the inner wall of the tower body 1.

[0036] In this embodiment: Since the support ring 8 is attached to the inner wall of the tower body 1, the horizontal movement of the support ring 8 is prevented.

[0037] As a technical optimization of this utility model, the pressure sensor 16 is a waterproof spoke-type pressure sensor.

[0038] In this embodiment: the waterproof spoke-type pressure sensor has excellent waterproof effect and can be adapted to long-term operation at the top of the tower body 1, avoiding failure of the pressure sensor 16 due to water vapor corrosion.

[0039] As a technical optimization of this utility model, the multiple first sealing rings 4 and second sealing rings 20 are both made of fluororubber.

[0040] In this embodiment, the fluororubber material has excellent aging resistance and a long service life, eliminating the need for frequent replacement and reducing downtime and maintenance costs.

[0041] As a technical optimization of this utility model, the outer wall of the tower body 1 is fixedly connected with two symmetrically distributed mounting brackets 21, and each mounting bracket 21 has multiple mounting holes.

[0042] In this embodiment, by providing two mounting brackets 21 with mounting holes, the device can be fixed by fasteners, thereby improving the stability of use.

[0043] The working principle and usage process of this utility model are as follows: Multiple packing cylinders 3 with sieve plates 2 are sequentially installed into the tower body 1. The packing cylinder 3 is filled with packing material, so that the outer wall of the packing cylinder 3 is in contact with the inner wall of the tower body 1. The first sealing ring 4 at the lower edge of each packing cylinder 3 is in contact with the upper edge of the lower packing cylinder 3, and the first sealing ring 4 of the bottommost packing cylinder 3 is in contact with the upper end of the support ring 8. The initial position of the circular plate 6 is close to the bottom end of the inner wall of the tower body 1.

[0044] Then, the pressure ring 14 is inserted into the inner wall of the tower body 1, and the disc 12 is made to fit against the inner wall of the annular groove 11, so that the pressure ring 14 comes into contact with the uppermost packing cylinder 3. Then, the top cover 10 is fitted onto the outer wall of the tower body 1, so that the lower edge of the top cover 10 fits against the second connecting ring 19 on the outer wall of the tower body 1. Then, the first connecting ring 18 and the second connecting ring 19 are fixed by multiple bolts until the top cover 10 and the second sealing ring 20 are squeezed tightly to form a top seal.

[0045] Then, the hydraulic cylinder 5 installed at the lower end of the tower body 1 is activated. Its output end pushes the circular plate 6 to move upward. The support ring 8 is driven to rise synchronously through the circumferentially distributed inclined rods 7. At the same time, it pushes multiple packing cylinders 3, pressure rings 14, multiple straight rods 13, discs 12 and extrusion columns 17 to move upward until the extrusion column 17 abuts against the lower end of the pressure sensor 16. When the upward thrust continues to be applied, the pressure sensor 16 detects the pressure signal in real time and transmits it to the controller 9. When the pressure value reaches the preset sealing threshold, the controller 9 controls the hydraulic cylinder 5 to stop moving and maintain the current output state, so that multiple first sealing rings 4 are subjected to appropriate pressure, ensuring that liquid does not pass through the gap between the outer wall of multiple packing cylinders 3 and the inner wall of the tower body 1.

[0046] In use, the light liquid enters from the light liquid inlet 23 at the lower end of the tower body 1 and flows upward through the space below the support ring 8, while the heavy liquid enters from the heavy liquid inlet 24 at the upper end of the tower body 1 and flows downward through the space above the pressure ring 14. The light liquid and heavy liquid come into countercurrent contact in the multi-layer sieve plate 2 and the packing cylinder 3, and mass transfer and mixing are achieved through the channels of the sieve plate 2 and the packing layer. Finally, the heavy liquid is discharged from the heavy liquid outlet 22 at the bottom of the tower, and the light liquid is discharged from the light liquid outlet 25.

[0047] When cleaning the screen plate 2 and removing the packing, loosen the bolts between the first connecting ring 18 and the second connecting ring 19, remove the top cover 10, and then remove the disc 12 along with the pressure ring 14. Then, restart the hydraulic cylinder 5, causing its output end to drive the support ring 8 to push multiple packing cylinders 3 upwards simultaneously. When the height of the uppermost packing cylinder 3 is higher than the height of the upper part of the tower body 1, stop the hydraulic cylinder 5. At this time, the uppermost packing cylinder 3 can be removed, and the packing inside the uppermost packing cylinder 3 can be directly poured out. Then, extend the output end of the hydraulic cylinder 5 a certain distance so that the height of the uppermost second packing cylinder 3 is higher than the height of the upper part of the tower body 1. Remove the second packing cylinder 3 and pour out the packing. Repeat this process until all the packing cylinders 3 are removed and the packing is poured out. The screen plate 2 can then be cleaned. Through innovative structural design, the cleaning operation of the multi-layer screen plate 2 is simple and convenient, while avoiding the drawbacks of traditional packing layer-by-layer digging, significantly reducing the difficulty and intensity of packing removal.

[0048] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A removable and cleanable sieve plate extraction tower, comprising a tower body (1) and a plurality of sieve plates (2) located inside the tower body (1) and distributed vertically, characterized in that: The outer walls of the multiple sieve plates (2) are fixedly connected to packing cylinders (3) that fit against the inner wall of the tower body (1). The lower edges of the multiple packing cylinders (3) are fixedly connected to first sealing rings (4). A lifting assembly is provided below the multiple packing cylinders (3). The lifting assembly includes a hydraulic cylinder (5) installed at the lower end of the tower body (1). The output end of the hydraulic cylinder (5) penetrates the outer wall of the tower body (1) and is fixedly connected to a circular plate (6). A support ring (8) is provided above the circular plate (6) and abuts against the first sealing ring (4) located at the lowest side. Multiple inclined rods (7) arranged in a circular array are fixedly connected between the support ring (8) and the circular plate (6). A pressure detection mechanism is provided above each of the packing cylinders (3). The pressure detection mechanism includes a top cover (10) sleeved on the outer wall of the tower body (1). A mounting cover (15) is fixedly connected through the upper end of the top cover (10). A pressure sensor (16) is fixedly connected inside the mounting cover (15). An annular groove (11) is provided on the upper side of the inner wall of the tower body (1). A matching disc (12) is inserted into the annular groove (11). Below the disc (12) is a pressure ring (14) that is attached to the inner wall of the tower body (1) and abuts against the packing cylinder (3) located on the uppermost side. Multiple straight rods (13) arranged in a circular array are fixedly connected between the pressure ring (14) and the disc (12). An extrusion column (17) that abuts against the lower end of the pressure sensor (16) is fixedly connected to the upper end of the disc (12). A controller (9) is installed at the lower end of the tower body (1). A sealing and fixing component is provided on the outer side of the top cover (10).

2. The removable and cleanable sieve plate extraction tower according to claim 1, characterized in that: The sealing and fixing assembly includes a first connecting ring (18) fixedly connected to the outer wall of the top cover (10), a second connecting ring (19) fixedly connected to the outer wall of the tower body (1), a second sealing ring (20) fixedly connected to the upper end of the second connecting ring (19) and abutting against the lower edge of the top cover (10), and the first connecting ring (18) and the second connecting ring (19) are fixedly connected by a plurality of bolts.

3. The removable and cleanable sieve plate extraction tower according to claim 1, characterized in that: The outer wall of the tower body (1) is connected to a heavy liquid inlet (24) located above the pressure ring (14), the outer wall of the tower body (1) is connected to a light liquid inlet (23) located below the support ring (8), the bottom side of the tower body (1) is connected to a heavy liquid outlet (22), the outer wall of the tower body (1) is connected to a light liquid outlet (25) located above the pressure ring (14), and the other end of the heavy liquid inlet (24), light liquid inlet (23), heavy liquid outlet (22) and light liquid outlet (25) are all equipped with flanges.

4. The removable and cleanable sieve plate extraction tower according to claim 1, characterized in that: The support ring (8) is attached to the inner wall of the tower body (1).

5. The removable and cleanable sieve plate extraction tower according to claim 1, characterized in that: The pressure sensor (16) is a waterproof spoke-type pressure sensor.

6. The detachable and cleanable sieve plate extraction tower according to claim 2, characterized in that: Both the first sealing ring (4) and the second sealing ring (20) are made of fluororubber.

7. The removable and cleanable sieve plate extraction tower according to claim 1, characterized in that: The outer wall of the tower body (1) is fixedly connected to two symmetrically distributed mounting brackets (21), each of which has multiple mounting holes.

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