Efficient purification device for petroleum mixed xylene

Abstract

The invention relates to the technical field of petroleum mixed xylene purification, in particular to an efficient petroleum mixed xylene purification device. Aiming at the problem that a petroleum mixed xylene solution cannot be filtered when a filter screen is replaced, the invention provides the following technical scheme: the petroleum mixed xylene filter comprises a filter pipe and a filter screen I inserted on the filter pipe, the two filter screens II are rotationally arranged in the filter pipe; the rotation control assembly is arranged on the filter pipe and is used for controlling the two filter screens II to open or close; and the propping frame is arranged at the top of the filter pipe and is used for elastically pushing the rotation control assembly. Through the cooperation of the displacement control assembly and the rotation control assembly, when the blocked filter screen I is just lifted to be replaced, the two filter screens II can be instantly bounced off, and another filter screen is formed to replace the filter screen I to filter a petroleum mixed xylene solution in a filter pipe; the work progress of filtering the petroleum mixed xylene solution is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of microfiltration purification of petroleum mixed xylene, and in particular to a high-efficiency purification device for petroleum mixed xylene. Background Art

[0002] Petroleum mixed xylene is an important raw material for organic synthesis. It has good volatility and solubility, which helps the coating to be coated and dried. It can be used to produce chemical products such as fragrances, resins, dyes, and pharmaceutical intermediates. The production of petroleum mixed xylene is mainly obtained through the hydrogenation reaction of benzene and toluene. The production methods of petroleum mixed xylene include: adsorption separation method, crystallization separation method, complex extraction method, adsorption crystallization integrated technology, membrane separation method, etc. Modern purification equipment often adopts a "adsorption pretreatment plus multi-stage membrane separation" combined process. For example, p-xylene is removed by activated carbon adsorption, large particle suspended matter and colloidal impurities in mixed xylene are removed by microfiltration, colloid and salt are removed by ultrafiltration or nanofiltration, and deep purification is achieved by reverse osmosis.

[0003] When purifying a petroleum mixed xylene solution, a filter is usually used for filtration. However, the filter is prone to clogging after long-term use, and the filter needs to be replaced. However, when the filter is replaced, the petroleum mixed xylene solution cannot be filtered, which reduces the filtration efficiency and filtration effect. For this reason, we propose a high-efficiency petroleum mixed xylene purification device to solve the above-mentioned problems. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a high-efficiency purification device for petroleum mixed xylene to solve the problem in the prior art that the petroleum mixed xylene solution cannot be filtered when the filter screen is replaced.

[0005] Therefore, the present invention adopts a high-efficiency purification device for petroleum mixed xylene, including a filter tube and a filter screen 1 inserted on the filter tube, and also includes two filter screens 2 rotatably arranged in the filter tube, a rotation control component arranged on the filter tube for controlling the opening or closing of the two filter screens 2, a resistance frame arranged on the top of the filter tube for elastically pushing the rotation control component, a displacement control component arranged on both sides of the filter tube for controlling the movement process of the rotation control component and a lifting and pressure frame fixedly arranged on the top of the filter screen 1 for driving the displacement control component; the rotation control component includes a control seat sliding on the top of the filter tube, two strip holes opened on the control seat, a rotating rod 4 that movably passes through the strip holes, a rotating rod 5 that movably passes through the strip holes and a round rod 6 fixedly arranged on both sides of the control seat; the displacement control component includes a tripod slidably arranged on both sides of the filter tube, a rack elastically arranged on the tripod and a spring that elastically twists on the tripod.

[0006] Furthermore, one side of the filter screen 2 is fixedly connected to a rod 1, and the other side of the filter screen 2 is fixedly connected to a tube 1, and the rod 1 is rotatably inserted into the tube 1.

[0007] Furthermore, the tube one is rotatably arranged on the filter tube through a sealed bearing, the end of the rotating rod four is fixedly connected to the top of the rod one, the end of the rotating rod five is fixedly connected to the top of the side of the tube one, and the bottom of the rod one is rotatably inserted into the filter tube.

[0008] Furthermore, the rotation control assembly also includes a fixed seat fixedly arranged on the top of the filter tube, a support rod movably passing through the filter tube and a spring 1 movably sleeved on the support rod, the end of the spring 1 is fixedly connected to one side of the support frame, and the spring 1 is located between the support frame and the fixed seat.

[0009] Furthermore, the rotation control assembly also includes a T-shaped rod 2 fixedly arranged on both sides of the top of the filter tube and a sliding sleeve 2 slidingly sleeveed on the T-shaped rod 2, the top of the sliding sleeve 2 is fixedly connected to the bottom of the round rod 6, and the outer ring end of the round rod 6 is fixedly sleeved with a bearing.

[0010] Furthermore, the displacement control assembly also includes a T-shaped rod three fixedly arranged on both sides of the filter tube and a T-shaped rod three slidingly sleeved on the T-shaped rod three, and one side of the sliding sleeve one is fixedly connected to one side of the tripod.

[0011] Furthermore, the displacement control assembly also includes a limiting rod three fixedly arranged on the tripod and a spring two movably mounted on the limiting rod three, the rack is movably mounted on the limiting rod three, and the spring two is located between the tripod and the rack.

[0012] Furthermore, the displacement control assembly also includes a torsion spring sleeved on a shaft on one side of the elastic sheet, and the tripod and the elastic sheet are clamped by the torsion spring, and the shaft of the elastic sheet is rotatably connected to the tripod via a bearing.

[0013] Furthermore, one end of the top of the tripod is provided with a limiting rod 2, and the bottom of the tripod is provided with a limiting rod 7.

[0014] Furthermore, the extension rods on both sides of the lifting and pressing frame are movably mounted on the tripod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: First, through the cooperation of the displacement control component and the rotation control component, when the clogged filter screen 1 is just lifted up for replacement, the two filter screens 2 can be instantly popped open, and another filter screen can be formed to replace the filter screen 1 to filter the petroleum mixed xylene solution in the filter tube, thereby speeding up the filtering process of the petroleum mixed xylene solution; Second, through the cooperation of the displacement control component and the rotation control component, when the new filter screen 1 is pressed into the filter tube, until the filter screen 1 is pressed into the bottom of the filter tube, the two opened filter screens 2 vibrate in the process of closing, shaking off the residue attached to the filter screen 2, so that the residue is blocked on the newly replaced filter screen 1, so as to facilitate the next replacement of filter screen 1 for filtration. Even if the clogged filter screen 1 is replaced, it will not affect the effect of continuing to filter the petroleum mixed xylene solution, thereby achieving seamless connection of the filtration work and improving the filtration efficiency and filtration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 4 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 5 It is a schematic diagram of a partial explosion structure of the present invention; Figure 6 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 7 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 8 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 9 It is a schematic diagram of a partial explosion structure of the present invention; Figure 10 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 11 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 12 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 13 It is a schematic diagram of a partial explosion structure of the present invention.

[0018] 1. Filter assembly; 2. Filter rod; 3. Filter screen 1; 4. Filter screen 2; 5. Tube 1; 6. Rod 1; 7. Filter tube; 8. Displacement control assembly; 81. Tripod; 82. Rack; 83. Spring; 84. Limit rod 7; 85. Limit rod 3; 86. Spring 2; 87. Limit rod 2; 88. Torsion spring; 9. Rotation control assembly; 91. Control seat; 92. Rotating rod 4; 93. Rotating rod 5; 94. Round rod 6; 95. Strip hole; 11. Spring 1; 12. Fixed seat; 13. T-bar 2; 14. Sleeve 2; 15. T-bar 3; 16. Sleeve 1; 17. Lifting and pressing frame. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, refer to the attached Figure 1-13In order to solve the problem in the prior art that a petroleum-mixed xylene solution cannot be filtered when a filter screen is replaced, the present invention discloses a highly efficient petroleum-mixed xylene purification device, comprising a filter tube 7 and a filter screen 3 inserted on the filter tube 7, and further comprising two filter screens 4 rotatably arranged in the filter tube 7, a rotation control assembly 9 arranged on the filter tube 7 for controlling the opening or closing of the two filter screens 4, an abutment frame 1 arranged on the top of the filter tube 7 for elastically pushing the rotation control assembly 9, and a plurality of control elements arranged on both sides of the filter tube 7 for controlling the movement of the rotation control assembly 9. The displacement control assembly 8 and the pressure-lifting frame 17 fixedly arranged on the top of the filter screen 3 for driving the displacement control assembly 8; the rotation control assembly 9 includes a control seat 91 sliding on the top of the filter tube 7, two bar holes 95 opened on the control seat 91, a rotating rod 4 92 that moves through the bar holes 95, a rotating rod 5 93 that moves through the bar holes 95 and a round rod 6 94 fixedly arranged on both sides of the control seat 91; the displacement control assembly 8 includes a tripod 81 slidingly arranged on both sides of the filter tube 7, a rack 82 elastically arranged on the tripod 81 and a spring 83 elastically twisted on the tripod 81. By cooperating with the lifting and pressing frame 17, the displacement control assembly 8, the rotation control assembly 9 and the frame 1, the lifting and pressing frame 17 can control the displacement control assembly 8 and the rotation control assembly 9 when lifting and pressing, thereby controlling the opening and closing of the filter 2 4 and the vibration of the filter 2 4 during the closing process. The lifting and pressing frame 17 on the blocked filter 1 3 is lifted up, and the displacement control assembly 8 is used to open the filter 2 4 instantly. The lifting and pressing frame 17 on the new filter 1 3 is pressed down, and the displacement control assembly 8 and the rotation control assembly 9 are used to cooperate to make the filter 2 4 open during the closing process. Vibration occurs in the filter, and the bar-shaped hole 95 is used to limit the rotating rod 5 93 and the rotating rod 4 92. By pushing the control seat 91, the rotating rod 4 92 and the rotating rod 5 93 are controlled to move, thereby controlling the opening and closing of the filter screen 2 4, and filtering is performed through the filter screen 2 4. When the two filter screens 2 4 are closed, it is convenient for the petroleum mixed xylene solution to be filtered through the filter screen 1 3. The filter tube 7 is used to inject the petroleum mixed xylene solution. The lifting and pressing frame 17 is used to pull and press down the filter screen 1 3 on the filter screen 1 3, and the movement process of the rotation control component 9 is controlled by the displacement control component 8.

[0022] One filter screen 2 (4) is fixedly connected to the side of a rod 6, while the other filter screen 2 (4) is fixedly connected to the side of a tube 5. Rod 6 is rotatably inserted into tube 5. Tube 5 is rotatably mounted on filter tube 7 via a sealed bearing. The end of rotating rod 4 (92) is fixedly connected to the top of rod 6, while the end of rotating rod 5 (93) is fixedly connected to the top of the side of tube 5. The bottom of rod 6 is rotatably inserted into filter tube 7. Rod 6 and tube 5 facilitate the independent rotation of the two filters 2 (4) without interfering with each other. The movement of rotating rod 4 (92) controls rod 6, while the movement of rotating rod 5 (93) controls tube 5. The insertion of rod 6 into tube 5 ensures that the two are concentric and on the same rotation axis.

[0023] The rotation control assembly 9 further includes a fixed seat 12 fixedly mounted on the top of the filter tube 7, a lever 2 that movably passes through the filter tube 7, and a spring 11 movably mounted on the lever 2. The end of the spring 11 is fixedly connected to one side of the lever frame 1, and the spring 11 is located between the lever frame 1 and the fixed seat 12. The rotation control assembly 9 further includes a second T-shaped rod 13 fixedly mounted on both sides of the top of the filter tube 7, and a second sliding sleeve 14 slidably mounted on the second T-shaped rod 13. The top of the second sliding sleeve 14 is fixedly connected to the bottom of the sixth round rod 94, and the outer end of the sixth round rod 94 is fixedly mounted with a bearing. The spring 11 is used to push the supporting rod 2, the supporting frame 1 and the rotation control assembly 9. The fixed seat 12 is used to support the spring 11 and provide force to the spring 11. The movement trajectory of the round rod 6 94 on the slide 2 14 can be limited by the T-shaped rod 2 13 and the slide 2 14. The bearing on the outer ring of the round rod 6 94 reduces friction when the round rod 6 94 contacts the tripod 81, the limiting rod 7 84, the spring piece 83, the rack 82 and the limiting rod 2 87, so that the round rod 6 94 moves more smoothly.

[0024] Example 2, refer to the attached Figure 1-13 To address the prior art issue of being unable to filter the petroleum-mixed xylene solution during filter screen replacement, this embodiment, based on the same concept as the first embodiment, further comprises a displacement control assembly 8 comprising three T-bars 15 fixedly mounted on either side of the filter tube 7 and a third T-bar 15 slidably mounted on the third T-bar 15. One side of the first sliding sleeve 16 is fixedly connected to one side of the tripod 81. The third T-bar 15 and the first sliding sleeve 16 limit the movement trajectory of the displacement control assembly 8, allowing only straight up and down movement of the displacement control assembly 8.

[0025] The displacement control assembly 8 also includes a third limiting rod 85 fixed to the tripod 81 and a second spring 86 movably mounted on the third limiting rod 85. The rack 82 movably mounts on the third limiting rod 85, with the second spring 86 positioned between the tripod 81 and the rack 82. The displacement control assembly 8 also includes a torsion spring 88 mounted on a shaft on one side of the spring plate 83. The tripod 81 and the spring plate 83 are connected via the torsion spring 88, and the shaft of the spring plate 83 is rotatably connected to the tripod 81 via a bearing. The top end of the tripod 81 has a second limiting rod 87, and the bottom end of the tripod 81 has a seventh limiting rod 84. The extension rods on both sides of the lifting and pressing frame 17 are movably mounted on the tripod 81. The horizontal bar on the upper part of the tripod 81 is used to support the round rod 6 94, and the limiting rod 7 84 can drag the round rod 6 94. The teeth on the rack 82 can make the round rod 6 94 vibrate. Through the cooperation of the rack 82, the limiting rod 3 85 and the spring 2 86, the round rod 6 94 can press the rack 82 to reach the horizontal bar on the upper part of the tripod 81. Through the cooperation of the spring piece 83, the torsion spring 88 and the tripod 81, when the tripod 81 is lifted, the round rod 6 94 passes through the spring piece 83. When the round rod 6 94 is on the limiting rod 7 84, the tripod 81 is pressed down. 1, drives the round rod 6 94 through the spring piece 83 and the rack 82 to reach the limit rod 2 87, thereby closing the two filter screens 2 4. Through the cooperation of the extension rods on both sides of the lifting and pressing frame 17 and the tripod 81, the tripod 81 and the limit rod 7 84, the spring piece 83, the rack 82 and the limit rod 2 87 on the tripod 81 can be driven to move up and down at the same time. The rack 82 can move left and right on the limit rod 3 85 through the spring 2 86, making it easier for the tripod 81 to rest on the tripod 81 and for the round rod 6 94 to reach the limit rod 2 87 from the rack 82.

[0026] Working principle: Case 1: Petroleum mixed with xylene solution passes through filter tube 7 and is filtered through filter screen 3. When filter screen 3 is clogged, the filtration efficiency is reduced and filter screen 3 needs to be replaced. At this time: S1. Pull the lifting and pressing frame 17 on the filter 13 to drive the filter 13 upward to replace the new filter 13 and the lifting and pressing frame 17. When the filter 13 is pulled upward, the lifting and pressing frame 17 can drive the tripod 81 and the limiting rod 7 84, the spring 83, the rack 82 and the limiting rod 2 87 on the tripod 81 to move upward at the same time, so that the round rod 6 94, under the cooperation of the spring 11 and the rod 2 and the fixing seat 12, pushes the round rod 6 94 from the position of the limiting rod 2 87 to the position of the vertical rod of the tripod 81 away from the limiting rod 2 87. During the process of lifting the tripod 81, the round rod 6 94 moves along the vertical rod of the tripod 81, pushing the spring piece 83 and causing the spring piece 83 to rotate, thereby reaching the position of the limit rod 7 84. Under the elastic force of the spring 11, the round rod 6 94 is pressed against the vertical rod of the tripod 81 at the position of the limit rod 7 84 and fixed. At this time, the filter screen 1 3 and the lifting and pressing frame 17 have risen to the top and are just about to be separated from the filter tube 7. At this time, the filter screen 1 3 and the lifting and pressing frame 17 that are blocked on the tripod 81 can be taken out. S2. When round rod six 94 instantly springs from the position of limit rod two 87 into the position of the vertical rod of tripod 81 away from limit rod two 87, control seat 91 also moves instantly under the elastic force of spring one 11, driving control seat 91 and sliding sleeve two 14 to move along the trajectory of T-shaped rod two 13. As a result, under the limit of strip hole 95, rotating rod five 93 and rotating rod four 92 move, thereby driving tube one 5 and rod one 6 to rotate instantly, thereby driving two filter screens two 4 to instantly open, replacing filter screen one 3 and continuing to filter the petroleum mixed xylene solution seamlessly. Case 2: When the petroleum mixed xylene solution is filtered through two filter screens 2 and 4, the clogged filter screen 1 and the pressure-raising frame 17 have been removed from the tripod 81 and need to be replaced with new filter screen 1 and the pressure-raising frame 17 for filtration. At this time: S1. Insert the lifting and pressing frame 17 on the new filter screen 3 onto the two tripods 81, so that the filter screen 3 is aligned with the insertion slot on the filter tube 7. Press down the lifting and pressing frame 17 to drive the filter screen 3 to be inserted into the filter tube 7. At this time, the round rod 6 94 moves from the position of the limit rod 7 84, and the round rod 6 94 passes through the spring piece 83 stuck with the tripod 81 and moves to the rack 82. The round rod 6 94 continues to move on the rack 82 as the lifting and pressing frame 17 is pressed down, and the round rod 6 94 Under the elastic force of the spring 11 on the round rod 6 94 and the downward pressure of the lifting and pressing frame 17, the teeth connected to the rack 82 vibrate, and the round rod 6 94 presses the rack 82 to squeeze the spring 2 86 on the limiting rod 3 85, so that the rack 82 contacts the tripod 81, thereby causing the round rod 6 94 to move from the rack 82 to the position of the limiting rod 2 87 on the tripod 81, so that the round rod 6 94 is pressed and fixed by the tripod 81. S2. As round rod six 94 moves, it drives control seat 91 to move along the trajectory of T-bar two 13, compressing spring one 11 and driving rotating rod four 92 and rotating rod five 93 in bar-shaped hole 95 to move, thereby driving tube one 5 and rod one 6 to rotate, and thus driving two filter screens two 4 to close, allowing new filter screen one 3 to continue filtering the petroleum mixed xylene solution; S3. During the movement of the round rod 6 94 on the rack 82 , the round rod 6 94 will continue to vibrate, and drive the control seat 91 to vibrate, thereby driving the rotating rod 4 92 and the rotating rod 5 93 to vibrate, thereby driving the tube 1 5 and the rod 1 6 to vibrate, thereby driving the two filter screens 2 4 to vibrate, shaking off the filtered material on the filter screen 2 4, and the filtered material reaches the new filter screen 1 3 and continues to be filtered, thereby achieving seamless connection of the filtering work.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A highly efficient purification device for petroleum mixed xylene, comprising a filter tube (7) and a filter screen (3) inserted on the filter tube (7), characterized in that It also includes two filter screens (4) rotatably arranged in the filter tube (7), a rotation control assembly (9) arranged on the filter tube (7) for controlling the opening or closing of the two filter screens (4), a support frame (1) arranged on the top of the filter tube (7) for elastically pushing the rotation control assembly (9), a displacement control assembly (8) arranged on both sides of the filter tube (7) for controlling the movement process of the rotation control assembly (9), and a lifting and pressing frame (17) fixedly arranged on the top of the filter screen (3) for driving the displacement control assembly (8); The rotation control assembly (9) includes a control seat (91) sliding on the top of the filter tube (7), two strip holes (95) provided on the control seat (91), a rotating rod (92) movable through the strip holes (95), a rotating rod (93) movable through the strip holes (95), and a round rod (94) fixedly provided on both sides of the control seat (91); The displacement control assembly (8) comprises a tripod (81) slidably arranged on both sides of the filter tube (7), a rack (82) elastically arranged on the tripod (81), and a spring (83) elastically twisted on the tripod (81).

2. The high-efficiency purification device for petroleum mixed xylene according to claim 1, characterized in that: One side of the filter screen 2 (4) is fixedly connected to a rod 1 (6), and the other side of the filter screen 2 (4) is fixedly connected to a tube 1 (5), and the rod 1 (6) is rotatably inserted into the tube 1 (5).

3. The petroleum mixed xylene efficient purification device according to claim 2, characterized in that: The tube one (5) is rotatably mounted on the filter tube (7) via a sealed bearing, the end of the rotating rod four (92) is fixedly connected to the top of the rod one (6), the end of the rotating rod five (93) is fixedly connected to the top of the side of the tube one (5), and the bottom of the rod one (6) is rotatably inserted into the filter tube (7).

4. The high-efficiency purification device for petroleum mixed xylene according to claim 3, characterized in that: The rotation control assembly (9) further comprises a fixed seat (12) fixedly arranged on the top of the filter tube (7), a push rod (2) movably passing through the filter tube (7), and a spring (11) movably sleeved on the push rod (2), wherein the end of the spring (11) is fixedly connected to one side of the push frame (1), and the spring (11) is located between the push frame (1) and the fixed seat (12).

5. The high-efficiency purification device for petroleum mixed xylene according to claim 4, characterized in that: The rotation control assembly (9) further comprises a T-shaped rod (13) fixedly arranged on both sides of the top of the filter tube (7) and a sliding sleeve (14) slidingly sleeved on the T-shaped rod (13). The top of the sliding sleeve (14) is fixedly connected to the bottom of the round rod (94). The outer ring end of the round rod (94) is fixedly sleeved with a bearing.

6. The high-efficiency purification device for petroleum mixed xylene according to claim 5, characterized in that: The displacement control assembly (8) further comprises a T-shaped rod three (15) fixedly arranged on both sides of the filter tube (7) and a T-shaped rod three (15) slidingly sleeved on the T-shaped rod three (15), and one side of the sliding sleeve one (16) is fixedly connected to one side of the tripod (81).

7. The high-efficiency purification device for petroleum mixed xylene according to claim 6, characterized in that: The displacement control assembly (8) further comprises a limiting rod (85) fixedly mounted on the tripod (81) and a spring (86) movably mounted on the limiting rod (85). The rack (82) is movably mounted on the limiting rod (85). The spring (86) is located between the tripod (81) and the rack (82).

8. The high-efficiency purification device for petroleum mixed xylene according to claim 7, characterized in that: The displacement control assembly (8) further includes a torsion spring (88) sleeved on a shaft on one side of the spring sheet (83), and the tripod (81) and the spring sheet (83) are connected via the torsion spring (88), and the shaft of the spring sheet (83) is rotatably connected to the tripod (81) via a bearing.

9. The high-efficiency purification device for petroleum mixed xylene according to claim 8, characterized in that: The top end of the tripod (81) is provided with a second limiting rod (87), and the bottom of the tripod (81) is provided with a seventh limiting rod (84).

10. The high-efficiency purification device for petroleum mixed xylene according to claim 1, characterized in that: The extension rods on both sides of the lifting and pressing frame (17) are movably sleeved on the tripod (81).

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