Improved grinding door

Abstract

The invention provides an improved grinding door which comprises a pipe wall, a bottom plate is fixedly connected to the outer wall of the pipe wall, four first bolts are installed on the upper surface of the bottom plate, the bottom plate and a pressing and fixing plate are connected through the first bolts, and the pressing and fixing plate and a manhole cover are connected through second bolts. The two fixing blocks are fixedly connected to the upper surface of the bottom plate, the pulleys are installed at the bottoms of the two sides of the pressing and fixing plate, and the sliding rails are installed between the pipe wall and the bottom plate, in the disassembly process, only several nuts need to be loosened, the manhole cover can be disassembled, people do not need to enter a mill to hang a mill door, and other work does not need to be considered. The sliding rail is installed outside the pipe wall, the manhole cover can be directly moved to the sliding rail to be placed after being lifted by a crane, time and labor are saved, and due to the fact that the supporting column on the side, close to the manhole cover, of the sliding rail is inclined, and the fixing blocks are installed on the two sides, the manhole cover can be rapidly aligned to be conveniently installed when installed.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, in particular to an improved grinding door. Background Art

[0002] Tube mill is the main production equipment in cement, metallurgy, chemical industry and other enterprises. The commonly used mill door is internal lifting type, which has many problems in actual use:

[0003] 1. Difficult to disassemble. Many companies have reported that it is time-consuming and laborious to open the grinding door. Sometimes it even takes 6 to 10 hours to open the grinding door because the grinding is filled with balls, forgings, and materials that are too solid.

[0004] 2. It is difficult to reinstall. Each time the mill door is opened for reinstallation, manual entry is required, which poses great safety risks in normal production due to high temperature, dust, sudden rotation of the mill, etc. Moreover, it is difficult to align and tighten when lifting from the inside to the top.

[0005] 3. During disassembly and installation, since the grinding door is very heavy, usually after removing the screws, a crane is used to lift the grinding door and place it separately. It is time-consuming and laborious to move the grinding door back and forth. In addition, during installation, the hoisted grinding door is very heavy and it is difficult to align it with the screw hole.

[0006] In view of the above problems, we propose an improved grinding door. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an improved grinding door.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an improved grinding door, comprising a pipe wall, the outer wall of the pipe wall is fixedly connected to a base plate, four first bolts are installed on the upper surface of the base plate, the base plate and the pressing plate are connected by the first bolts, the pressing plate and the manhole cover are connected by the second bolts, two fixed blocks are fixedly connected to the upper surface of the base plate, pulleys are installed at the bottom of both sides of the pressing plate, and slide rails are installed between the pipe wall and the base plate.

[0009] As a further description of the present invention: the bottom side wall of the manhole cover is provided with a circle of grooves, and a sealing ring is installed in the grooves; a sealing gasket is installed on the inner side of the upper surface of the bottom plate, and the sealing gasket is a square with a hollow middle.

[0010] As a further description of the present invention: the slide rail is a long column, an inclined column and a track, the inclined column is fixedly connected to the upper surface of the base plate, the long column is fixedly connected to the outer surface of the tube wall, a track is installed between the long column and the inclined column, and the height of the support column away from one end of the base plate exceeds the slide rail.

[0011] As a further description of the present invention: the hole where the pressing plate is connected to the first bolt is provided with a top screw hole, a rubber ring is installed in the hole where the first bolt contacts the pressing plate, and a rubber ring is installed in the hole where the second bolt contacts the pressing plate. The pressing plate is a long metal block with an arc, and the pressing plate has two ends, each of which is placed on one side close to the slide rail.

[0012] As a further description of the present invention: a handle is installed on the top surface of the manhole cover, and a wavy ground inner wall is fixedly connected to the bottom of the manhole cover.

[0013] As a further description of the present invention: the fixing block is an inclined column, and the distance between the two inclined columns is the same as the width of the manhole cover.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: when disassembling, only a few nuts need to be loosened to complete the disassembly of the manhole cover, because the gap between the mill door lining and the side lining is designed to be small, it is not easy to be clamped by the ball or forging and be stuck, and disassembly and assembly is faster, and there is no need to consider people entering the mill to hang the mill door, etc., especially when the mill is temporarily stopped for inspection, it avoids the need for people to enter the high-temperature mill to reinstall the mill door, thereby avoiding safety risks and improving work efficiency, and a slide rail is installed on the outside of the pipe wall, and after the manhole cover is lifted by a crane, it can be directly moved to the slide rail for placement, saving time and effort, and because the support of the slide rail close to the manhole cover side is inclined, and fixing blocks are installed on both sides, when the manhole cover is installed, it can be quickly aligned for easy installation, and the device has a simple structure and a novel design, and is suitable for market promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the working state structure of an improved grinding door proposed by the present invention;

[0016] Figure 2 A schematic diagram of the structure of an improved grinding door in an open state proposed by the present invention;

[0017] Figure 3 This is a schematic diagram of the overall structure of a manhole cover of an improved grinding door proposed by the present invention when it is hoisted;

[0018] Figure 4 The present invention is a schematic structural diagram of a manhole cover assembly for an improved grinding door.

[0019] Explanation of the reference numerals: 1. pipe wall; 2. bottom plate; 3. manhole cover; 4. pressing plate; 5. handle; 6. first bolt; 7. second bolt; 8. slide rail; 9. sealing gasket; 10. sealing ring; 11 fixing block; 12. pulley. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 4 The present invention provides a technical solution: an improved grinding door, including a pipe wall 1, the outer wall of the pipe wall 1 is fixedly connected with a bottom plate 2, four first bolts 6 are installed on the upper surface of the bottom plate 2, the bottom plate 2 and the pressing plate 4 are connected by the first bolts 6, the pressing plate 4 and the manhole cover 3 are connected by the second bolts 7, two fixing blocks 11 are fixedly connected to the upper surface of the bottom plate 2, pulleys 12 are installed at the bottom of both sides of the pressing plate 4, and slide rails 8 are installed between the pipe wall 1 and the bottom plate 2.

[0022] In this embodiment: the bottom side wall of the manhole cover 3 has a circle of groove, and a sealing ring is installed in the groove, a sealing gasket 9 is installed on the inner side of the upper surface of the bottom plate 2, and the sealing gasket is a square with a hollow middle, the hole where the pressing plate 4 is connected to the first bolt 6 is provided with a top screw hole, a rubber ring is installed in the hole where the first bolt 6 contacts the pressing plate 4, and a rubber ring is installed in the hole where the second bolt 7 contacts the pressing plate 4, the pressing plate 4 is a long strip of metal block with an arc, and the pressing plate 4 has two respectively placed on one side close to the slide rail 8, a handle 5 is installed on the top surface of the manhole cover 3, and a wavy ground inner wall is fixedly connected to the bottom of the manhole cover 3.

[0023] Specific use: When disassembling, first use a wrench to unscrew the nut of the first bolt 6. If the grinding door is stuck and it is not suitable to be directly lifted out by the crane, you can manually loosen the grinding door top by twisting the top screw and then lift it out. Use the crane to lift the manhole cover 3 by the handle 5, align the pulley 12 at the bottom of the pressing plate 4 with the slide rail 8, and then push the manhole cover 3 onto the slide rail 8 for temporary placement.

[0024] In this embodiment: the slide rail 8 is a long column, an inclined column and a track, the inclined column is fixedly connected to the upper surface of the base plate 2, the long column is fixedly connected to the outer surface of the pipe wall 1, a track is installed between the long column and the inclined column, and the height of the support column away from one end of the base plate 2 exceeds the slide rail, the fixed block 11 is an inclined column, and the spacing between the two inclined columns is the same as the width of the manhole cover 3.

[0025] Specific use: During installation, slightly lift the manhole cover 3 on the slide rail 8, slide the manhole cover 3 down along the slide rail 8, and slowly drop it between the two fixing blocks 11. Since the end of the slide rail 8 is inclined and the fixing block 11 is inclined, alignment is completed, and then the first bolt 6 is tightened to complete the installation.

[0026] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved grinding door, comprising a tube wall (1), characterized in that: The outer wall of the pipe wall (1) is fixedly connected to a bottom plate (2), and four first bolts (6) are installed on the upper surface of the bottom plate (2). The bottom plate (2) and the pressing plate (4) are connected via the first bolts (6), and the pressing plate (4) and the manhole cover (3) are connected via the second bolts (7). Two fixing blocks (11) are fixedly connected to the upper surface of the bottom plate (2), and pulleys (12) are installed at the bottom of both sides of the pressing plate (4). A slide rail (8) is installed between the pipe wall (1) and the bottom plate (2).

2. The improved grinding door according to claim 1, characterized in that: The bottom side wall of the manhole cover (3) has a circle of groove, and a sealing ring is installed in the groove. A sealing gasket (9) is installed on the inner side of the upper surface of the bottom plate (2), and the sealing gasket is a square with a hollow middle.

3. The improved grinding door according to claim 1, characterized in that: The slide rail (8) is a long column, an inclined column and a track, the inclined column is fixedly connected to the upper surface of the base plate (2), the long column is fixedly connected to the outer surface of the tube wall (1), a track is installed between the long column and the inclined column, and the height of the support column at one end away from the base plate (2) exceeds the slide rail.

4. The improved grinding door according to claim 1, characterized in that: The hole connecting the pressing plate (4) and the first bolt (6) is provided with a top screw hole, a rubber ring is installed in the hole where the first bolt (6) and the pressing plate (4) are in contact, and a rubber ring is installed in the hole where the second bolt (7) and the pressing plate (4) are in contact. The pressing plate (4) is a long strip of metal block with an arc, and the pressing plate (4) has two ends respectively placed on one side close to the slide rail (8).

5. The improved grinding door according to claim 1, characterized in that: A handle (5) is installed on the top surface of the manhole cover (3), and a wavy ground inner wall is fixedly connected to the bottom of the manhole cover (3).

6. The improved grinding door according to claim 1, characterized in that: The fixing block (11) is an inclined column, and the distance between the two inclined columns is the same as the width of the manhole cover (3).

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