A reinforcing doctor for preventing deformation of a frameless mirror doctor
By adding reinforcing components to the scraper blade, the problem of deformation of the frame cleaning mirror scraper during use was solved, resulting in a more efficient cleaning effect and reduced spare parts wear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN IRON & STEEL GROUP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-03
AI Technical Summary
The cleaning frame mirror scraper is prone to upward or downward deformation during use, which reduces the fit with the furnace frame mirror, affects the cleaning effect, and increases the wear and tear of spare parts.
A structure was designed that includes a scraper base, scraper blade, blade holder, spring column, spacer tube, spring, spring sleeve, front and rear spacer bolts, and reinforcing components. The reinforcing components enhance the strength of the scraper blade and prevent deformation.
It effectively prevents scraper blade deformation, improves the fit with the furnace frame mirror surface, enhances the cleaning effect, and reduces spare parts wear and equipment maintenance workload.
Smart Images

Figure CN224450587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a reinforcing scraper to prevent deformation of the mirror scraper blade, which can prevent the front end of the mirror scraper blade from deforming upward or downward, and belongs to the technical field of coke oven equipment. Background Technology
[0002] During the coking process, large molecular hydrocarbons in the coal gas are broken down into free carbon and hydrogen under high temperatures. The free carbon adheres to the furnace walls and frame, forming impurities such as tar residue. The accumulation of impurities on the furnace frame reduces the sealing of the furnace frame and door, causing smoke and fire from the door, and in severe cases, damaging the door's cutting edge.
[0003] The removal of tar residue and other impurities from the furnace frame is accomplished by the furnace frame cleaning device of the coke pusher and coke catcher. This device mainly consists of a cleaning trolley, frame, mirror scraper, and inner scraper. After coke pushing is completed and the pusher rod is retracted, the furnace frame cleaning device rotates and enters the furnace frame area. Driven by a hydraulic cylinder, the cleaning scraper moves back and forth within a certain range along the furnace frame, scraping off tar residue and other adhering substances from the mirror surface and inner side of the furnace frame. In actual production, it was found that when the mirror scraper of the cleaning device moves up and down along the furnace frame, its blade is affected by factors such as high-temperature heat radiation from the carbonization chamber, spring clamping device jamming, and weak suspension strength of the blade tip. This causes the blade tip to easily deform upwards or downwards, reducing the fit between the scraper blade and the furnace frame mirror surface. Deformed scraper blades not only fail to achieve a good cleaning effect, increasing smoke from the furnace door and polluting the environment, but also increase the wear and tear of scraper blade spare parts and the workload of equipment maintenance. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a reinforcing scraper to prevent deformation of the mirror cleaning scraper blade, which can prevent the mirror cleaning scraper blade from deforming upward or downward during use, thus solving the problems existing in the background art.
[0005] The technical solution of this utility model is:
[0006] A reinforcing scraper for preventing deformation of a mirror cleaning scraper includes a scraper base, a scraper blade, a scraper holder, a spring post, a spacer tube, a spring, a spring sleeve, a front spacer bolt, a reinforcing component, a rear spacer bolt, and a base plate. The base plate is fixed to the scraper base. The front end of the scraper blade, the scraper holder, the spacer tube, and the reinforcing component are connected together by the front spacer bolt. The rear end of the scraper blade and the scraper holder are connected together by the rear spacer bolt. The spring post and the spacer tube are integrally formed. The spring post is inserted into a spring sleeve containing a built-in spring. The spring sleeve is fixed to the base plate. The scraper holder is provided with a scraper holder positioning baffle, which is sleeved on the spring post.
[0007] The scraper blade is located between the reinforcing assembly and the blade holder.
[0008] The reinforcing component includes a reinforcing plate and reinforcing ribs welded together with the reinforcing plate. The reinforcing plate is provided with positioning holes that cooperate with the front-end spacer bolts.
[0009] The reinforcing plate in the reinforcing assembly has a rectangular structure, and the reinforcing ribs are symmetrically welded on both sides of the reinforcing plate.
[0010] The scraper blade is provided with scraper blade adjustment holes that cooperate with the front and rear positioning bolts.
[0011] The scraper blade adjustment hole, which mates with the front and rear positioning bolts, is an elongated hole.
[0012] The tool holder is provided with a front positioning hole and a rear positioning hole that cooperate with the front positioning bolt and the rear positioning bolt.
[0013] The spring post, the spacer tube, the spring, and the spring sleeve constitute the spring clamping device of the scraper. One end of the spring post is welded vertically to the spacer tube, and the other end is inserted into the spring sleeve with the built-in spring.
[0014] The tool holder positioning baffle is fixed on the tool holder, and the tool holder positioning baffle is provided with positioning holes that cooperate with the spring column.
[0015] The beneficial effects of this utility model are: This utility model has a simple structure and is easy to use. It can strengthen the weak parts of the scraper blade and solve the problem that the upward or downward deformation of the mirror scraper blade during use reduces the fit between the scraper blade and the furnace frame mirror, thus affecting the frame cleaning effect. It can meet the actual production needs of coke ovens. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a top view of the scraper blade structure of this utility model;
[0018] Figure 3 This is a top view schematic diagram of the reinforcing component of this utility model;
[0019] Reference numerals: 1. Scraper base; 2. Scraper blade; 3. Scraper holder; 4. Spring column; 5. Spacer tube; 6. Spring; 7. Spring sleeve; 8. Front spacer bolt; 9. Reinforcing assembly; 10. Rear spacer bolt; 11. Base plate;
[0020] 21. Scraper blade adjustment hole;
[0021] 31. Tool holder positioning baffle; 32. Tool holder front positioning hole; 33. Tool holder rear positioning hole;
[0022] 91. Reinforcing plate; 92. Reinforcing plate positioning holes; 93. Reinforcing ribs; Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and examples.
[0024] See attached document Figure 1-3 A reinforcing scraper for preventing deformation of a mirror cleaning scraper includes a scraper base 1, a scraper blade 2, a scraper holder 3, a spring post 4, a spacer tube 5, a spring 6, a spring sleeve 7, a front spacer bolt 8, a reinforcing component 9, a rear spacer bolt 10, and a base plate 11. The base plate 11 is fixed to the scraper base 1. The front end of the scraper blade 2, the scraper holder 3, the spacer tube 5, and the reinforcing component 9 are connected together by the front spacer bolt 8. The rear end of the scraper blade 2 and the scraper holder 3 are connected together by the rear spacer bolt 10. The spring post 4 and the spacer tube 5 are integrally structured. The spring post 4 is inserted into the spring sleeve 7 containing the spring 6. The spring sleeve 7 is fixed to the base plate 11. The scraper holder 3 is provided with a scraper holder positioning baffle 31, which is sleeved on the spring post 4.
[0025] In this embodiment, as Figure 1 As shown, the reinforcing scraper includes a scraper base 1, a scraper blade 2, a blade holder 3, a spring post 4, a spacer tube 5, a spring 6, a spring sleeve 7, a front spacer bolt 8, a reinforcing component 9, a rear spacer bolt 10, and a base plate 11. The spring post 4 and the spacer tube 5 are an integral structure. One end of the spring post 4 is welded to the spacer tube 5, and the other end is inserted into the spring sleeve 7 containing the spring 6. The front end of the blade holder 3 is fixed to the spacer tube 5 by the spacer bolt 8. The blade holder positioning baffle 31 is fitted onto the rear end of the spring post 4 through the positioning hole. The scraper blade 2 and the reinforcing component 9 are sequentially mounted on the blade holder 3. The front spacer bolt 8 passes through the spacer tube 5, the blade holder 3, the scraper blade 2, and the reinforcing component 9 in sequence, and is finally locked and fixed with a nut. The rear spacer bolt 10 passes through the blade holder 3 and the scraper blade 2 in sequence, and is finally locked and fixed with a nut.
[0026] like Figure 2 , 3 As shown, the reinforcing component 9 includes a reinforcing plate 91 and a reinforcing rib 93. The reinforcing plate 91 has a rectangular structure with a positioning hole 92 in the middle and cuboid reinforcing ribs 93 at both ends. The direction is parallel to the scraper blade adjustment hole 21. The reinforcing ribs 93 and the reinforcing plate 91 are welded together. The reinforcing component 9 is assembled on the front front end of the scraper blade 2. The positioning hole 92 is aligned with the front adjustment hole 21 of the scraper blade. The spacer bolt 8 passes through the scraper blade adjustment hole 21 and the reinforcing plate positioning hole 92 in sequence. The front end of the reinforcing rib 93 is welded to the front of the scraper blade 2 by a disconnect welding method.
[0027] An embodiment of this utility model is as follows:
[0028] The reinforcing plate of the reinforcing component has a length of 30mm, a width of 20mm, a thickness of 5mm, and a central positioning hole diameter of 10mm. It is made of ordinary carbon steel.
[0029] The reinforcing rib has structural dimensions of 80mm in length, 10mm in width, and 10mm in height, and is made of ordinary carbon steel.
[0030] The reinforcing ribs are welded to both sides of the reinforcing plate using ordinary carbon steel welding rods. Their direction is parallel to the rectangular adjustment holes of the scraper blade. The bottom surface of the reinforcing ribs is flush with the bottom surface of the reinforcing plate. The vertical distance between one end of the reinforcing rib and the center line of the positioning hole is 30mm, and the vertical distance between the other end and the center line of the positioning hole is 50mm.
[0031] The distance between the long end of the reinforcing rib and the front edge of the scraper blade is 10mm.
Claims
1. A reinforced squeegee to prevent distortion of a clear frame mirror squeegee, characterized by: It includes a scraper base (1), a scraper blade (2), a blade holder (3), a spring column (4), a spacer tube (5), a spring (6), a spring sleeve (7), a front spacer bolt (8), a reinforcing component (9), a rear spacer bolt (10), and a base plate (11). The base plate (11) is fixed on the scraper base (1). The front end of the scraper blade (2), the blade holder (3), the spacer tube (5), and the reinforcing component (9) are connected together by the front spacer bolt (8). The rear end of the scraper blade (2) and the blade holder (3) are connected together by the rear spacer bolt (10). The spring column (4) and the spacer tube (5) are integrated. The spring column (4) is inserted into the spring sleeve (7) of the built-in spring (6). The spring sleeve (7) is fixed on the base plate (11). The blade holder (3) is provided with a blade holder positioning baffle (31), which is sleeved on the spring column (4).
2. The reinforced squeegee of claim 1, wherein: The scraper blade (2) is located between the reinforcing assembly (9) and the blade holder (3).
3. The reinforced squeegee of claim 2, wherein: The reinforcing component (9) includes a reinforcing plate (91) and a reinforcing rib (93) welded together with the reinforcing plate (91). The reinforcing plate (91) is provided with a positioning hole (92) that cooperates with the front end spacer bolt (8).
4. The reinforced squeegee of claim 3, wherein: The reinforcing plate (91) in the reinforcing component (9) has a rectangular structure, and the reinforcing ribs (93) are symmetrically welded on both sides of the reinforcing plate (91).
5. The reinforced squeegee of claim 1, wherein: The scraper blade (2) is provided with a scraper blade adjustment hole (21) that cooperates with the front end spacer bolt (8) and the rear end spacer bolt (10).
6. A reinforced squeegee according to claim 5, wherein: The scraper blade (2) has an elongated adjustment hole (21) that cooperates with the front end spacer bolt (8) and the rear end spacer bolt (10).
7. The reinforced squeegee of claim 1, wherein: The tool holder (3) is provided with a front positioning hole (32) and a rear positioning hole (33) that cooperate with the front positioning bolt (8) and the rear positioning bolt (10).
8. The reinforced squeegee of claim 1, wherein: The spring column (4), the spacer tube (5), the spring (6) and the spring sleeve (7) constitute the spring clamping device of the scraper. One end of the spring column (4) is welded vertically to the spacer tube (5), and the other end is inserted into the spring sleeve (7) with the built-in spring (6).
9. The reinforced squeegee of claim 1, wherein: The tool holder positioning baffle (31) is fixed on the tool holder (3), and the tool holder positioning baffle (31) is provided with a positioning hole that cooperates with the spring column (4).