Conveniently-overhauled rectifying tower for preparing propionic anhydride

Abstract

The utility model relates to the technical field of rectifying towers, in particular to a rectifying tower convenient to overhaul and used for preparing propionic anhydride. According to the technical scheme, the rectifying tower comprises a supporting frame, a lifting platform and a rectifying tower body, the rectifying tower body is fixedly installed on the upper surface of the supporting frame, stand columns are fixedly connected to the positions, located on the two sides of the rectifying tower body, of the upper surface of the supporting frame, and the positions, close to the upper surfaces, of the inner sides of the two stand columns are fixedly connected through a transverse plate; an electric capstan is fixedly installed on the upper surface of the transverse plate, two steel wire ropes are fixedly connected to the output end of the electric capstan, the tail ends of the two steel wire ropes are fixedly connected to the two sides of the upper surface of the lifting platform correspondingly, and limiting grooves are formed in the two sides of the interior of the lifting platform correspondingly. When the maintenance tool is used for maintaining the propionic anhydride preparation rectifying tower, a maintainer can be quickly and conveniently conveyed to a specified height, the labor intensity of the maintainer is reduced while the maintenance efficiency is improved, and the maintenance tool is convenient to carry.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifying tower technical field, concretely is a rectifying tower for propionic anhydride preparation convenient to overhaul. BACKGROUND

[0002] Rectifying tower is a kind of chemical equipment for separating the components of liquid mixture, it utilizes the temperature difference of different components when heating evaporation and cooling condensation, through the action of multiple vapor-liquid equilibrium and temperature difference, gradually separates the components in mixture, obtains high-purity product, and rectifying tower is needed in the process of propionic anhydride preparation.

[0003] At present, the rectifying tower for propionic anhydride preparation is high in vertical height, when overhauling, the staff needs to climb to the specified height using ladder or other climbing tools, which is time-consuming, and the labor intensity of the overhaul personnel is also large, and in the process of overhaul, it is not convenient to carry the overhaul tool, therefore, we provide a rectifying tower for propionic anhydride preparation convenient to overhaul. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a rectifying tower for propionic anhydride preparation convenient to overhaul, which can quickly and conveniently send the overhaul personnel to the specified height when overhauling the rectifying tower for propionic anhydride preparation, provides the overhaul efficiency, reduces the labor intensity of the overhaul personnel, and is convenient for carrying the overhaul tool, solves the problem that the rectifying tower for propionic anhydride preparation is high in vertical height, the staff needs to climb to the specified height using ladder or other climbing tools when overhauling, which is time-consuming, and the labor intensity of the overhaul personnel is also large, and in the process of overhaul, it is not convenient to carry the overhaul tool.

[0005] To achieve the above object, the utility model provides the following technical scheme: a rectifying tower for propionic anhydride preparation convenient to overhaul, including support frame, lifting platform and rectifying tower main part, the support frame upper surface is fixedly installed with rectifying tower main part, the support frame upper surface is fixedly connected with stand at both sides of rectifying tower main part position, two the stand inboard is close to the upper surface position and is fixedly connected through the transverse plate, the transverse plate upper surface is fixedly installed with electric winch, the electric winch output is fixedly connected with two steel wire ropes, and two steel wire ropes end is fixedly connected on the lifting platform upper surface both sides position respectively, the lifting platform inside both sides position is all set with limit recess, and two the stand is respectively passed through two limit recesses, the lifting platform front surface is provided with the notch.

[0006] Preferably, the two front and rear surfaces of the column are provided with arc-shaped grooves, and rotating balls are rotatably installed on the inner walls of the two limiting grooves close to the front and rear surfaces of the lifting platform.

[0007] Preferably, the two outer surfaces of the column close to the upper surface are provided with through holes, and the two steel wires pass through the two through holes respectively.

[0008] Preferably, the two outer sides of the column close to the through holes are rotatably installed with guide wheels.

[0009] Preferably, the outer surface of the lifting platform close to the two columns is provided with sliding grooves, and the two sliding grooves are slidably installed with sliding blocks, the outer surfaces of the two sliding blocks are provided with threaded holes, and the two threaded holes are movably inserted with screw rods, and the outer sides of the two columns are equally spaced with a plurality of insertion holes.

[0010] Preferably, the upper surface of the column is fixedly installed with a rain shield, and the electric winch is located below the rain shield.

[0011] Preferably, the inner sides of the two columns are equally spaced with a plurality of connecting rods, and the connecting rods are fixedly connected to the outer surface of the rectifying tower body.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The utility model discloses a rectifying tower body is provided with lifting platform, column, limiting groove, steel wire, electric winch and gap, reaches when the maintenance of propionic anhydride preparation rectifying tower can fast and convenient with the maintenance personnel is sent to the designated height, provides the maintenance efficiency also reduced the labor intensity of the maintenance personnel, and the effect that the carrying of the maintenance tool is convenient, and the electric winch drives the lifting platform to lift through the steel wire, and the column plays the limiting effect to the lifting of the lifting platform, and the lifting platform sends the maintenance personnel and the maintenance tool to the designated height, and the rectifying tower body is maintained, and in the process of lifting of the lifting platform, the pipeline on the rectifying tower body passes through the gap.

[0014] 2、The utility model discloses a arc-shaped groove and rotating ball are set up, reach the limiting effect to the lifting of the lifting platform, prevent the effect that the sliding friction between the lifting platform and the column produces greater abrasion, when lifting, the outer surface of the rotating ball and the inner wall of the arc-shaped groove contact and rotate, then play the limiting effect to the lifting platform, and the sliding friction between the lifting platform and the column is converted into the rotating ball friction between the rotating ball and the column, then reduce the abrasion.

[0015] 3, The utility model discloses a jack -up platform is provided with the plug -in hole, screw rod, sliding block, screw hole and screw rod, can improve the effect of the safety of the lifting platform, when the lifting platform is lifted to a certain height and overhauls rectifying tower main part, the screw rod is screwed and makes the end move to the plug -in hole direction, and the sliding block is slid to the position of the screw rod is fine -tuned, makes the screw rod end insert into the inside of the plug -in hole, when the electric capstan appears accidental damage, the lifting platform can also be fixed under the action of screw rod, sliding block and plug -in hole, prevents the lifting platform from falling because of losing power, improves the security. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the local three -dimensional structure schematic diagram of the utility model lifting platform;

[0018] Figure 3 It is the utility model Figure 2 It is the enlarged structure schematic diagram of A;

[0019] Figure 4 It is the local three -dimensional structure schematic diagram of the utility model stand;

[0020] Figure 5 It is the main view structure schematic diagram of the utility model.

[0021] Reference Signs: 1, support frame; 2, lifting platform; 3, stand; 4, steel wire rope; 5, rain shield; 6, electric capstan; 7, horizontal plate; 8, rectifying tower main part; 9, limit recess; 10, rotating ball; 11, notch; 12, sliding slot; 13, sliding block; 14, screw hole; 15, screw rod; 16, plug -in hole; 17, guide pulley; 18, through -going opening; 19, arc recess; 20, connecting rod. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model is further explained below in combination with the drawings and specific embodiments. Embodiment one

[0023] As Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, this utility model proposes a distillation column for the preparation of propionic anhydride that is easy to maintain. It includes a support frame 1, a lifting platform 2, and a distillation column body 8. The distillation column body 8 is fixedly installed on the upper surface of the support frame 1. Propionic anhydride is prepared through the distillation column body 8. Columns 3 are fixedly connected to both sides of the upper surface of the support frame 1 at both ends of the distillation column body 8. Several connecting rods 20 are fixedly connected at equal intervals on the inner side of each column 3, and the ends of the connecting rods 20 are fixedly connected to the outer surface of the distillation column body 8, which can improve the stability of the columns 3 and the distillation column body 8. The inner side of the two columns 3 is fixedly connected to the upper surface by a horizontal plate 7. An electric winch 6 is fixedly installed on the upper surface of the horizontal plate 7. A rain shield 5 is fixedly installed on the upper surface of the columns 3, and the electric winch 6 is located below the rain shield 5 to prevent the electric winch 6 from being damaged by long-term rain.

[0024] Two steel wire ropes 4 are fixedly connected to the output end of the electric winch 6, and the ends of the two steel wire ropes 4 are fixedly connected to the two sides of the upper surface of the lifting platform 2 respectively. The main body of the distillation column 8 passes through the lifting platform 2. The outer surface of the two columns 3 is provided with through holes 18 near the upper surface, and the two steel wire ropes 4 pass through the two through holes 18 respectively. The outer side of the two columns 3 is rotatably installed with guide wheels 17 near the through holes 18. The two guide wheels 17 guide the two steel wire ropes 4. The inner sides of the lifting platform 2 are provided with limit grooves 9, and the two columns 3 pass through the two limit grooves 9 respectively. The front and rear surfaces of the two columns 3 are provided with arc-shaped grooves 19. The inner walls of the two limit grooves 9 are rotatably installed with rotating balls 10 near the front and rear surfaces of the lifting platform 2, and the rotating balls 10 are located inside the arc-shaped grooves 19. The front surface of the lifting platform 2 is provided with a notch 11.

[0025] In use, the electric winch 6 drives the lifting platform 2 to rise and fall via the wire rope 4. The column 3, the rotating ball 10, and the arc-shaped groove 19 limit the rise and fall of the lifting platform 2. The lifting platform 2 delivers maintenance personnel and tools to the designated height and performs maintenance on the main body 8 of the distillation tower. During the rise and fall of the lifting platform 2, the pipes on the main body 8 of the distillation tower pass through the gap 11. Example 2

[0026] like Figures 1-4 As shown, the present invention proposes a distillation column for the preparation of propionic anhydride that is easy to maintain. Compared with Embodiment 1, this embodiment also includes a sliding groove 12 on the outer surface of the lifting platform 2 near the two columns 3. A slider 13 is slidably installed inside the two sliding grooves 12. A threaded hole 14 is provided on the outer surface of the two sliders 13, and a screw 15 is movably inserted into the two threaded holes 14. Several insertion holes 16 are provided at equal intervals on the outer side of the two columns 3.

[0027] In the embodiment, when the lifting platform 2 is lifted to a certain height and the rectifying tower main body 8 is overhauled, the screw rod 15 is screwed to move the end to the direction of the insertion hole 16, and the sliding block 13 is slid to finely adjust the position of the screw rod 15, so that the end of the screw rod 15 is inserted into the insertion hole 16. When the electric winch 6 is accidentally damaged, the lifting platform 2 can also be fixed under the action of the screw rod 15, the sliding block 13 and the insertion hole 16, so that the lifting platform 2 does not fall due to the loss of power, and the safety is improved.

[0028] The above specific embodiments are only several preferred embodiments of the present application, and based on the technical scheme of the present application and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A rectifying column for propionic anhydride production facilitating maintenance, comprising a support frame (1), a lifting platform (2) and a rectifying column main body (8), characterized in that: The support frame (1) upper surface is fixedly installed with rectifying tower main part (8), the support frame (1) upper surface is located rectifying tower main part (8) both sides position place all fixedly connected with stand (3), two the stand (3) inner side close to the upper surface position place is fixedly connected through the transverse board (7), the transverse board (7) upper surface is fixedly installed with electric winch (6), the electric winch (6) output is fixedly connected with two steel wire ropes (4), and two steel wire ropes (4) end is fixedly connected respectively on the upper surface both sides position of lifting platform (2), the lifting platform (2) inside both sides position place all be provided with limit recess (9), and two the stand (3) respectively passes through two limit recess (9), the lifting platform (2) front surface is provided with gap (11).

2. The rectification column for preparing propionic anhydride with easy maintenance according to claim 1, characterized in that: Two The stand (3) front surface and rear surface are provided with arc-shaped recess (19), two The limit recess (9) inner wall close to the lifting platform (2) front surface and rear surface position place all are rotatably installed with rotating ball (10), and rotating ball (10) is located in arc-shaped recess (19) inside.

3. The rectification column for preparing propionic anhydride with easy maintenance according to claim 1, characterized in that: Two The stand (3) outer surface close to the upper surface position place all are provided with through -going hole (18), and two The steel wire rope (4) respectively passes through two through -going hole (18).

4. The rectifying column for preparing propionic anhydride with easy maintenance according to claim 3, characterized in that: Two The stand (3) outer side close to the through -going hole (18) position place all rotatably installed with guide pulley (17).

5. The rectification column for preparing propionic anhydride according to claim 1, wherein: The lifting platform (2) outer surface close to two stand (3) position place all are provided with sliding slot (12), two The sliding slot (12) inside all are slidably installed with sliding block (13), two The sliding block (13) outer surface all are provided with threaded hole (14), and two The threaded hole (14) inside all are movably inserted with screw rod (15), two The stand (3) outer side all are equally spaced and are provided with a plurality of insertion holes (16).

6. The rectification column for preparing propionic anhydride with easy maintenance according to claim 1, characterized in that: The stand (3) upper surface is fixedly installed with rain shield (5), and electric winch (6) is located rain shield (5) below position.

7. The rectification column for preparing propionic anhydride according to claim 1, wherein: Two The stand (3) inner side all are equally spaced and are fixedly connected with a plurality of connecting rods (20), and the connecting rod (20) end is fixedly connected to rectifying tower main part (8) outer surface.

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