Small scraper of scraper condenser

Abstract

The utility model belongs to the technical field of condensers, and relates to a small scraper of a scraper condenser, which comprises a small scraper, a small scraper rest and a rest protection clamp, the small scraper rest comprises a bolt and a plurality of elastic steel sheets, the plurality of elastic steel sheets are stacked up and down, and the central parts of the elastic steel sheets are penetrated and fixed by the bolt from top to bottom; the tool rest protection clamp comprises an inner side face a and an inner side face b. The inner side surface a is parallel to the upper surface of the small scraper rest, and the inner side surface b is parallel to the lower bottom surface of the small scraper rest; the small scraper rest is located between the inner side face a and the inner side face b, and the gap between the inner side face a and the upper surface of the small scraper rest and the gap between the inner side face b and the lower bottom face of the small scraper rest are both 0.5-1 mm. And the bolt simultaneously penetrates through and fixes the small scraper rest and the rest protection clamp. According to the small scraper of the scraper condenser, when the elastic steel sheet of the small scraper rest is bent under stress, the bolt is not prone to breakage, the failure rate of the whole system is reduced, and the stability of a polyester production device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of condenser, and particularly relates to a small scraper of scraper condenser. BACKGROUND

[0002] In the polyester production process, the scraper condenser is an important equipment for maintaining the normal operation of the vacuum system. It ensures the smooth progress of the production process by scraping the oligomers on the tank wall. The scraper in the scraper condenser is divided into a large scraper and a small scraper (i.e. a secondary scraper), wherein the small scraper is responsible for scraping the oligomers on the tank wall to ensure the cleaning and stable operation of the system. However, in actual use, the small scraper holder often fails, which brings a major safety hazard to the vacuum system.

[0003] As shown in Figures 1-3 The small scraper holder in the prior art is usually composed of a plurality of elastic steel sheets, and the central part is locked by a bolt. These elastic steel sheets are used to support the work of the small scraper. During operation, the small scraper holder will be subjected to a large force from the material, causing the elastic steel sheets to bend and deform, and shear force is generated. This shear force is easy to cause the bolt to break, affecting the normal function of the small scraper holder. More seriously, after the bolt breaks, the entire small scraper holder is more likely to break and damage, causing the small scraper to fall and get stuck in the liquid pipe, blocking the flow of liquid, seriously damaging the vacuum system, and even causing a production accident of full-line shutdown, thereby bringing a large safety hazard and economic loss.

[0004] Therefore, the existing small scraper holder design has certain defects, and it cannot effectively withstand the force generated during the scraping of oligomers, which is easy to cause the bolt to break, and further cause the small scraper to be damaged. In order to avoid the damage of the small scraper holder and the risk of failure shutdown, it is necessary to improve the small scraper in the prior art, so as to improve the reliability and safety of the equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the prior art, and provides a small scraper of scraper condenser.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A small scraper of scraper condenser, comprising a small scraper and a small scraper holder, the small scraper holder comprising a bolt and a plurality of elastic steel sheets, the plurality of elastic steel sheets being stacked together from top to bottom and the central part being fixed by the bolt from top to bottom, and the small scraper further comprising a holder protection clamp;

[0008] The holder protection clamp comprises an inner side a and an inner side b, and the inner side a is located above the inner side b; the inner side a is parallel to the upper surface of the small scraper holder, and the inner side b is parallel to the lower bottom surface of the small scraper holder;

[0009] The small scraper holder is located between the inner side a and the inner side b, and the gap between the inner side a and the upper surface of the small scraper holder and the gap between the inner side b and the lower bottom surface of the small scraper holder are both 0.5-1 mm, so as to reduce the shear force generated when several elastic steel sheets are bent into arc shapes at the same time and prevent the bolts from being broken;

[0010] The bolts simultaneously penetrate the small scraper holder and the holder protection clamp;

[0011] The purpose of adding the holder protection clamp is to increase the stress area of the elastic steel sheet. The holder protection clamp is installed in the middle section of the small scraper holder. When the elastic steel sheet of the small scraper holder is stressed and bent, the shear force of the elastic steel sheet in the bending process is dispersed, so as to avoid the bolts from being broken. At the same time, the holder protection clamp improves the rigidity of the small scraper holder as a whole, and can protect the elastic steel sheet to a certain extent.

[0012] As a preferred technical solution:

[0013] The small scraper of the scraper condenser as described above, the holder protection clamp comprises a horizontal plate a and a horizontal plate b, the lower surface of the horizontal plate a is the inner side a, and the upper surface of the horizontal plate b is the inner side b.

[0014] The small scraper of the scraper condenser as described above, the horizontal plate a and the horizontal plate b are both rectangular plates, and the length direction is parallel to the length direction of the elastic steel sheet.

[0015] The small scraper of the scraper condenser as described above, the two wide edges of the horizontal plate a vertically extend downward to form side plates I and II, and the two wide edges of the horizontal plate b vertically extend upward to form side plates III and IV.

[0016] The small scraper of the scraper condenser as described above, the side plate I and the side plate III are located on the same side and abut each other, and the side plate II and the side plate IV are located on the same side and abut each other.

[0017] The small scraper of the scraper condenser as described above, the bolts simultaneously penetrate the centers of the horizontal plate a and the horizontal plate b.

[0018] The small scraper of the scraper condenser as described above, the thicknesses of the horizontal plate a and the horizontal plate b are the same.

[0019] Beneficial effects:

[0020] This utility model discloses a small scraper for a scraper condenser. A protective clamp is provided in the middle section of the small scraper holder. A gap of 0.5 to 1 mm is left between the protective clamp and the elastic steel sheet. When the elastic steel sheet of the small scraper holder is subjected to bending force, the shear force of the elastic steel sheet during bending is dispersed, preventing bolt breakage. At the same time, the protective clamp improves the overall rigidity of the small scraper holder, which can protect the elastic steel sheet to a certain extent, reduce the failure rate of the entire system, and improve the stability of the polyester production unit. Attached Figure Description

[0021] Figures 1-2 This is a schematic diagram of a scraper condenser and scraper structure in the prior art.

[0022] Figure 3 This is a schematic diagram of the structure of the small scraper holder in the prior art scraper condenser; where (a), (b) and (c) are schematic diagrams of the structure from different perspectives;

[0023] Figure 4 This is a schematic diagram of a tool holder protection clamp according to the present invention; wherein, (a) is a side view of the tool holder protection clamp, and (b) is a bottom view of the horizontal plate a.

[0024] Figure 5 This is a structural schematic diagram of the small scraper holder in this utility model; wherein (a), (b) and (c) are structural schematic diagrams from different perspectives;

[0025] Figure 6 A schematic diagram of the condenser scraper structure using the small scraper of this utility model;

[0026] Among them, 1-small scraper, 2-small scraper holder, 3-elastic steel sheet, 4-bolt, 5-blade holder protective clamp. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0028] Example 1

[0029] A type of scraper condenser with small scrapers, such as Figure 6 As shown, it includes a small scraper 1, a small scraper holder 2, and a holder protection clamp 5;

[0030] like Figure 5As shown in the drawings, the small scraper holder 2 comprises a bolt 4 and a plurality of elastic steel sheets 3 stacked together;

[0031] As shown in the drawings, Figures 4-5 the holder protection clamp 5 comprises horizontal plates a and b, which are rectangular plates with the length direction parallel to the length direction of the elastic steel sheets 3;

[0032] The horizontal plate a is located above the horizontal plate b, and the lower surface of the horizontal plate a is marked as the inner side a, and the upper surface of the horizontal plate b is marked as the inner side b;

[0033] As shown in the drawings, Figure 4 the two wide edges of the horizontal plate a vertically extend downward to form side plates I and II, which are located on the same side and abut each other; and the two wide edges of the horizontal plate b vertically extend upward to form side plates III and IV, which are located on the same side and abut each other;

[0034] As shown in the drawings, Figure 5 the small scraper holder 2 is located between the inner side a and the inner side b, the inner side a is parallel to the upper surface of the small scraper holder 2, and the inner side b is parallel to the lower bottom surface of the small scraper holder 2; the gap between the inner side a and the upper surface of the small scraper holder 2 and the gap between the inner side b and the lower bottom surface of the small scraper holder 2 are both 0.5-1 mm;

[0035] The bolt 4 penetrates the center of the holder protection clamp 5 and the plurality of elastic steel sheets 3 from top to bottom.

[0036] Embodiment 2

[0037] A small scraper of a scraper condenser, comprising a small scraper, a small scraper holder and a holder protection clamp;

[0038] The small scraper holder comprises a bolt and a plurality of elastic steel sheets stacked together;

[0039] The holder protection clamp comprises horizontal plates a and b, which are both rectangular plates with the same thickness and the length direction parallel to the length direction of the elastic steel sheets;

[0040] The horizontal plate a is located above the horizontal plate b, and the lower surface of the horizontal plate a is marked as the inner side a, and the upper surface of the horizontal plate b is marked as the inner side b;

[0041] The small scraper holder is located between the inner side a and the inner side b, the inner side a is parallel to the upper surface of the small scraper holder, and the inner side b is parallel to the lower bottom surface of the small scraper holder; the gap between the inner side a and the upper surface of the small scraper holder and the gap between the inner side b and the lower bottom surface of the small scraper holder are both 0.5-1 mm;

[0042] The bolt penetrates the center of the cutter holder protection fixture and the plurality of elastic steel sheets from top to bottom.

Claims

1. A small scraper of a scraper condenser, comprising a small scraper (1) and a small scraper holder (2), the small scraper holder (2) comprising a bolt (4) and a plurality of elastic steel sheets (3), the plurality of elastic steel sheets (3) being stacked together from top to bottom and the central parts thereof being fixed from top to bottom by the bolt (4), characterized in that, The small scraper further comprises a tool holder protection clamp (5); ​ The tool holder protection clamp (5) comprises an inner side a and an inner side b, the inner side a is above the inner side b; the inner side a is parallel to the upper surface of the small scraper tool holder (2), and the inner side b is parallel to the lower bottom surface of the small scraper tool holder (2); The small scraper tool holder (2) is located between the inner side a and the inner side b, and the gap between the inner side a and the upper surface of the small scraper tool holder (2) and the gap between the inner side b and the lower bottom surface of the small scraper tool holder (2) are both 0.5-1mm; The bolt (4) penetrates the small scraper tool holder (2) and the tool holder protection clamp (5) at the same time.

2. A small scraper of a scraper condenser according to claim 1, characterized in that The tool holder protection clamp (5) comprises a horizontal plate a and a horizontal plate b, the lower surface of the horizontal plate a is the inner side a, and the upper surface of the horizontal plate b is the inner side b.

3. A small scraper of a scraper condenser according to claim 2, characterized in that The horizontal plate a and the horizontal plate b are both rectangular plates, and the length direction is parallel to the length direction of the elastic steel sheet (3).

4. A small scraper of a scraper condenser according to claim 3, characterized in that Two wide edges of the horizontal plate a vertically extend downward to form side plate I and side plate II, and two wide edges of the horizontal plate b vertically extend upward to form side plate III and side plate IV.

5. A small scraper of a scraper condenser according to claim 4, characterized in that The side plate I and the side plate III are located on the same side and abut each other, and the side plate II and the side plate IV are located on the same side and abut each other.

6. A small scraper of a scraper condenser according to claim 2, characterized in that, The bolt (4) penetrates the center of the horizontal plate a and the horizontal plate b at the same time.

7. A small scraper of a scraper condenser according to claim 2, characterized in that The thickness of the horizontal plate a and the horizontal plate b is the same.

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