Esterification tower filter

Abstract

The utility model discloses an esterification tower filter which comprises a filter body, the filter body sequentially comprises an upper cylinder body, a lower cylinder body and a conical shell from top to bottom, the upper cylinder body, the lower cylinder body and the conical shell are communicated with one another, a telescopic rotating motor is arranged above the upper cylinder body and connected with a rotating shaft, a brush fan assembly is arranged on the rotating shaft, and a brush is arranged on the brush fan assembly. A filter basket is arranged in the upper barrel body, a filter basket seat plate is arranged at the junction of the upper barrel body and the lower barrel body, a discharge port is formed in the bottom of the conical shell, a plug block is arranged at the bottom of the rotating shaft, a through hole matched with the plug block is formed in the center of the filter basket seat plate, and a backwashing hole communicated with the discharge cavity is formed in the side face of the upper barrel body. Compared with the prior art, according to the reverse cleaning structure, liquid enters from the discharging cavity, the interior of the filter basket is cleaned, and the cleaning effect is better.

Description

Technical Field

[0001] The utility model relates to filtering equipment after esterification reaction, in particular to an esterification tower filter. Background Art

[0002] The esterification reaction process tower is one of the important equipment for esterification reaction in chemical production. Its main function is to fully react the raw materials in the tower through processes such as raw material heating, mixing, reaction, and separation, so as to obtain the desired target product.

[0003] The esterification reaction process tower mainly obtains the desired product by thermodynamically reacting the raw materials in the tower. Specifically, the raw materials are added into the tower, that is, the raw materials required for esterification reaction, including acid, alcohol and catalyst, are added into the tower. The raw materials are then heated by the heating system in the tower and fully mixed in the tower to generate the desired ester products. The target product, by-products and impurities are physically separated by filters during the final output.

[0004] In the prior art, the utility model patent with application number "202121184709.3" discloses a similar filter structure, which uses a brush driven by a motor on the top to rotate and clean the filter basket to obtain a better subsequent filtering effect. However, for this type of filtering equipment with higher filtering difficulty, the method of cleaning by adding water to the outer side of the filter basket is relatively unreasonable, which makes the internal structure of the filter more complicated and affects the normal use of the filter. Utility Model Content

[0005] The utility model aims to provide an esterification tower filter which has a better cleaning effect through the combination of backwashing and brushing.

[0006] The filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter housing, and the filter housing is a kind of filter

[0007] Preferably, an opening is provided at the top of the upper cylinder, the diameter of the opening is larger than the diameter of the filter basket, a flange cover is provided above the opening, and a packing sealing structure matched with the rotating shaft is provided in the flange cover.

[0008] By adopting the above technical solution, the opening serves to provide for the installation of the filter basket and the setting of the flange cover.

[0009] Preferably, a speed change rotor is provided between the telescopic rotating motor and the top of the flange cover, the speed ratio of the speed change rotor is 1:12, and a vent connected to the discharge cavity is provided on the flange cover.

[0010] By adopting the above technical solution, a deceleration effect is achieved, the rotation speed of the internal rotating shaft is controlled, and at the same time, the emptying of the filter body is supported through the vent port.

[0011] Preferably, the bottom of the flange cover extends downward to form a protrusion, a rotating hole for the rotating shaft to pass through is provided in the protrusion, a packing hole is concentrically provided outside the rotating hole, packing rings are stacked in the packing hole, a stuffing box cover is provided below the protrusion, an annular pressure block corresponding to the packing hole is provided on the top of the stuffing box cover, and the stuffing box cover and the protrusion are fixed by bolts.

[0012] By adopting the above technical solution, the center of the sealing flange cover is provided to the rotation position of the rotating shaft, which can ensure the rotation and extension of the rotating shaft and the sealing during the rotation and extension process.

[0013] Preferably, the material outlet, material inlet, vent and backwash hole are all provided with extension pipes and connecting flanges, the material outlet and the backwash hole are vertically projected in the horizontal direction, and the axis of the material outlet and the material inlet are coincident in the horizontal direction.

[0014] By adopting the above technical solution, the connecting flange serves to connect the material outlet, material inlet, vent and backwash hole with the external pipeline.

[0015] Preferably, a positioning ring is provided on the upper inner side of the upper cylinder below the material outlet, and a fixing ring cooperating with the positioning ring is provided on the side of the upper part of the filter basket. The positioning ring and the fixing ring are fixed by bolts, and the bottom of the filter basket is opened downward.

[0016] By adopting the above technical solution, the positioning ring cooperates with the fixing ring to fix the filter basket in the height direction, restricting the filter basket from moving downward, and facilitating the filter basket to be lifted upward when replaced or repaired.

[0017] Preferably, the upper surface of the filter basket seat plate is recessed downward to form a snap-in groove for the bottom of the filter basket to be snapped in, the through hole is arranged in the center of the snap-in groove, and the inner circumferential surface of the snap-in groove cooperates with the outer circumferential surface of the bottom of the filter basket.

[0018] By adopting the above technical solution, the embedding groove cooperates with the bottom of the filter basket to play a positioning role, and also prevents the bottom of the filter basket from being blocked, that is, the filter basket adopts a bottomless design solution.

[0019] Preferably, the filter basket seat plate is provided with filter holes on the outside of the embedding groove, and the filter holes are connected to the feed cavity and the lower cylinder in the height direction respectively. The outer circumferential surface of the filter basket seat plate is welded and fixed to the inner circumferential surface of the upper cylinder.

[0020] By adopting the above technical solution, the filter holes allow large particles of impurities to pass through and leave the feed cavity from the discharge port at the bottom, thus avoiding blockage between the feed cavity and the filter basket.

[0021] To sum up, during use, the material enters the feed chamber through the material inlet, then enters the discharge chamber through the side of the filter basket, and then leaves the discharge chamber through the material outlet; after filtering for a period of time, the filter is flushed through the backwash hole, and the telescopic rotating motor controls the shaft to move upward and rotate, so that the brush fan assembly cleans the filter holes on the side of the filter basket, and at the same time, the upward moving shaft causes the blockage to leave the through hole, and the backwashing liquid flows from the through hole to the discharge port. During the filtration process of the filter, the through hole is blocked by the block, so it does not affect normal filtration; compared with the prior art, this back-cleaning structure takes liquid in from the discharge chamber to clean the filter basket, which has a better cleaning effect, and is combined with the discharge port to allow blocked impurities to be discharged from the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional schematic diagram of an embodiment;

[0023] Figure 2 yes Figure 1 An enlarged schematic diagram of part A is shown;

[0024] Figure 3 yes Figure 1 The enlarged schematic diagram of part B is shown;

[0025] Figure 4 is a top view of the embodiment at the flange cover position;

[0026] In the figure, 1. upper cylinder; 11. discharge chamber; 12. material outlet; 13. feed chamber; 14. material inlet; 15. backwash hole; 2. lower cylinder; 21. filter basket seat plate; 22. through hole; 23. embedded groove; 24. filter hole; 3. cone shell; 31. discharge port; 32. extension pipe; 33. connecting flange; 4. telescopic rotating motor; 41. rotating shaft; 42. blocking block; 43. speed changer; 5. filter basket; 51. positioning ring; 52. fixing ring; 6. flange cover; 61. opening; 62. vent; 63. protrusion; 64. rotating hole; 65. packing hole; 66. packing ring; 67. stuffing box gland; 68. annular pressure block. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0029] Example:

[0030] like Figures 1 to 4 As shown, an esterification tower filter includes a filter body, which includes an upper cylinder 1, a lower cylinder 2 and a cone shell 3 that are interconnected from top to bottom. A telescopic rotary motor 4 is provided above the upper cylinder 1. The telescopic rotary motor 4 needs to meet the functions of telescoping and rotating in the height direction. A speed change rotor 43 is provided between the telescopic rotary motor 4 and the top of the upper cylinder 1. The internal speed ratio is 1:12. The telescopic rotary motor 4 and the speed change rotor 43 belong to the prior art and will not be described in detail here. Figure 1 As shown, the internal structure of the upper cylinder 1 is as follows: a filter basket 5 is provided in the middle and lower sections of the upper cylinder 1, the inner side of the filter basket 5 and the top of the upper cylinder 1 are both discharge cavities 11, and a feed cavity 13 is formed between the outer side of the filter basket 5 and the inner wall of the upper cylinder 1, a material inlet 14 communicating with the feed cavity 13 is provided on the side of the upper cylinder 1, and a material outlet 12 communicating with the discharge cavity 11 is provided on the side of the upper cylinder 1, and the horizontal projections of the axes of the material outlet 12 and the material inlet 14 coincide with each other. Figure 1 As shown, the two are staggered in the height direction.

[0031] like Figure 1As shown, the bottom of the telescopic rotating motor 4 is connected to a rotating shaft 41, and a brush fan assembly for cleaning the filter basket 5 is provided on the rotating shaft 41. An opening 61 is provided on the top of the upper cylinder 1. The diameter of the opening 61 is larger than the diameter of the filter basket 5, so that the filter basket 5 can be taken out from the opening 61. A flange cover 6 is provided above the opening 61, and a rotating hole 64 is provided in the center of the flange cover 6. Figure 2 As shown, a vent 62 communicating with the discharge cavity 11 is provided on the flange cover 6 at a position offset from the rotation hole 64 .

[0032] like Figure 2 As shown, a packing sealing structure that cooperates with the rotating shaft 41 is provided in the flange cover 6. The packing sealing structure includes a protrusion 63 formed by extending downward from the bottom of the flange cover 6, and a rotating hole 64 is provided through the protrusion 63. A packing hole 65 is concentrically provided outside the rotating hole 64. The diameter of the packing hole 65 is larger than the diameter of the rotating hole 64. A plurality of packing rings 66 are stacked in the packing hole 65. A stuffing box pressure cover 67 is provided below the protrusion 63. An annular pressure block 68 corresponding to the packing hole 65 is provided on the top of the stuffing box pressure cover 67. The stuffing box pressure cover 67 and the protrusion 63 are fixed by bolts.

[0033] like Figure 1 and Figure 3 As shown, a filter basket seat plate 21 is provided at the junction of the upper cylinder 1 and the lower cylinder 2, a discharge port 31 is provided at the bottom of the conical shell 3, a block 42 is provided at the bottom of the rotating shaft 41, a through hole 22 is provided in the center of the filter basket seat plate 21 to cooperate with the block 42, and a backwash hole 15 connected to the discharge chamber 11 is provided on the side of the upper cylinder 1.

[0034] Extension pipes 32 and connecting flanges 33 are provided outside the material outlet 12 , the material inlet 14 , the vent 62 and the backwash hole 15 . The material outlet 12 and the backwash hole 15 are vertically projected in the horizontal direction.

[0035] The structure and fixing method of the filter basket 5 in this embodiment are as follows:

[0036] The fixing structure of the upper part of the filter basket 5 is that a positioning ring 51 is provided on the upper part of the inner side of the upper cylinder 1 below the material outlet 12. The outer circle of the positioning ring 51 is welded and fixed to the inner wall of the upper cylinder 1. The side surface of the upper part of the filter basket 5 extends outward to form a fixing ring 52 that cooperates with the positioning ring 51. The positioning ring 51 and the fixing ring 52 are fixed by bolts. The bottom of the filter basket 5 is set to an opening 61 downward, that is, the bottom of the filter basket 5 is not sealed.

[0037] The fixing structure of the bottom of the filter basket 5 is that the upper surface of the filter basket seat plate 21 is recessed downward to form a locking groove 23 for the bottom of the filter basket 5 to be locked, and the through hole 22 is arranged at the center of the locking groove 23, and the inner circumferential surface of the locking groove 23 cooperates with the outer circumferential surface of the bottom of the filter basket 5.

[0038] In order to facilitate backwashing and avoid clogging at the filter basket 5 during the filtration process, the filter basket seat plate 21 is provided with a filter hole 24 on the outside of the embedding groove 23. The filter hole 24 is connected to the feed chamber 13 and the lower cylinder 2 in the height direction. The outer circumferential surface of the filter basket seat plate 21 is welded and fixed to the inner circumferential surface of the upper cylinder 1.

[0039] Working principle:

[0040] During the use of the filter, the telescopic rotating motor 4 blocks the plug in the through hole 22. During the filtering process of the filter, the through hole 22 is blocked by the block 42, so it does not affect normal filtration. The material enters the feed chamber 13 through the material inlet 14, enters the discharge chamber 11 through the side of the filter basket 5, and finally leaves the discharge chamber 11 through the material outlet 12; when backwashing is required, the filter is flushed through the backwash hole 15. At this time, the telescopic rotating motor 4 controls the rotating shaft 41 to move upward and rotate, so that the brush fan assembly cleans the filter hole 24 on the side of the filter basket 5. At the same time, the upward moving rotating shaft 41 causes the block 42 to leave the through hole 22, and the liquid for backwashing flows from the through hole 22 to the discharge port 31, and at the same time combines with the discharge port 31 to allow the blocked impurities to be discharged from the discharge port 31.

Claims

1. An esterification tower filter, comprising a filter body, characterized in that: The filter body comprises, from top to bottom, an upper cylinder (1), a lower cylinder (2) and a cone shell (3) which are interconnected. A telescopic rotary motor (4) is provided above the upper cylinder (1). The telescopic rotary motor (4) is connected to a rotating shaft (41). A brush fan assembly is provided on the rotating shaft (41). A filter basket (5) is provided in the upper cylinder (1). The inner side of the filter basket (5) and the top of the upper cylinder (1) form a discharge cavity (11). The outer side of the filter basket (5) and the inner wall of the upper cylinder (1) form a feed cavity (13). The side of the upper cylinder (1) is provided with a A material inlet (14) is connected to the feed chamber (13); a material outlet (12) is provided on the side of the upper cylinder (1) and is connected to the discharge chamber (11); a filter basket seat plate (21) is provided at the junction of the upper cylinder (1) and the lower cylinder (2); a discharge port (31) is provided at the bottom of the cone shell (3); a block (42) is provided at the bottom of the rotating shaft (41); a through hole (22) is provided at the center of the filter basket seat plate (21) and is matched with the block (42); and a backwash hole (15) is provided on the side of the upper cylinder (1) and is connected to the discharge chamber (11).

2. The esterification tower filter according to claim 1, characterized in that: An opening (61) is provided at the top of the upper cylinder (1), the diameter of the opening (61) being larger than the diameter of the filter basket (5), a flange cover (6) being provided above the opening (61), and a packing sealing structure matched with the rotating shaft (41) being provided inside the flange cover (6).

3. The esterification tower filter according to claim 2, characterized in that: A speed change rotor (43) is provided between the telescopic rotary motor (4) and the top of the flange cover (6), wherein the speed ratio of the speed change rotor (43) is 1:12, and a vent (62) communicating with the discharge cavity (11) is provided on the flange cover (6).

4. The esterification tower filter according to claim 2, characterized in that: The bottom of the flange cover (6) extends downward to form a protrusion (63), and a rotating hole (64) for the rotating shaft (41) to pass through is provided in the protrusion (63), a packing hole (65) is concentrically provided outside the rotating hole (64), and packing rings (66) are stacked in the packing hole (65), a stuffing box pressure cover (67) is provided below the protrusion (63), and an annular pressure block (68) corresponding to the stuffing hole (65) is provided on the top of the stuffing box pressure cover (67), and the stuffing box pressure cover (67) and the protrusion (63) are fixed by bolts.

5. The esterification tower filter according to claim 1, characterized in that: The material outlet (12), the material inlet (14), the vent (62) and the backwash hole (15) are all provided with an extension pipe (32) and a connecting flange (33). The projections of the material outlet (12) and the backwash hole (15) in the horizontal direction are vertically arranged, and the projections of the axes of the material outlet (12) and the material inlet (14) in the horizontal direction coincide with each other.

6. The esterification tower filter according to claim 5, characterized in that: A positioning ring (51) is provided on the upper portion of the inner side of the upper cylinder (1) below the material outlet (12), and a fixing ring (52) cooperating with the positioning ring (51) is provided on the side surface of the upper portion of the filter basket (5). The positioning ring (51) and the fixing ring (52) are fixed by bolts, and the bottom of the filter basket (5) is provided with an opening (61) facing downward.

7. The esterification tower filter according to claim 6, characterized in that: The upper surface of the filter basket seat plate (21) is recessed downward to form a locking groove (23) for the bottom of the filter basket (5) to be locked, the through hole (22) is arranged at the center of the locking groove (23), and the inner circumferential surface of the locking groove (23) is matched with the outer circumferential surface of the bottom of the filter basket (5).

8. The esterification tower filter according to claim 7, characterized in that: The filter basket seat plate (21) is provided with a filter hole (24) on the outside of the locking groove (23), and the filter hole (24) is connected to the feed cavity (13) and the lower cylinder (2) in the height direction. The outer circumferential surface of the filter basket seat plate (21) is welded and fixed to the inner circumferential surface of the upper cylinder (1).

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