Novel external air seal device of coal mill

Abstract

The utility model discloses a novel coal mill outer air sealing device, and belongs to the technical field of coal mill outer air sealing, the novel coal mill outer air sealing device solves the problem that a rubber air cushion is inconvenient to replace, the novel coal mill outer air sealing device comprises a locking pipe hoop, the outer surface of the locking pipe hoop is fixedly connected with a limiting mechanism, and the inner side face of the locking pipe hoop is slidably connected with a sealing mechanism and the limiting mechanism; comprising an external thread pipe fixedly connected to the outer surface of the locking pipe hoop. According to the air cushion device, the air charging connector penetrates through the outer surface of the locking pipe hoop, then the rubber air cushion is pressed, so that a limiting protrusion deforms and then enters a limiting groove, then a positioning protrusion is clamped into a positioning groove, and then the outer surface of the rubber air cushion is conveniently attached to the inner side face of the locking pipe hoop; and the inflation nozzle is pressed, one end of the inflation nozzle jacks up the outer surface of the rubber air cushion, then the outer surface of the rubber air cushion can be grabbed conveniently, the rubber air cushion and the locking pipe hoop can be separated conveniently, and then the rubber air cushion can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mill external gas seals, in particular to a novel coal mill external gas seal device. Background Art

[0002] The coal mill external air seal is a device used to prevent the leakage of coal powder or other dust materials inside the coal mill. It is located outside the coal mill. Its main function is to seal the space between the coal mill and the external environment to prevent dust, smoke and other substances from overflowing, so as to keep the working environment clean and reduce pollution and damage to surrounding equipment and environment.

[0003] The existing new type of coal mill external air seal device may age, wear or be damaged as the rubber air cushion is used for a long time, resulting in a decrease in sealing performance or even failure. In addition, the rubber air cushion is usually fixedly connected and difficult to align for disassembly or replacement, so there is a problem of inconvenience in replacing the rubber air cushion. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the above problems existing in the prior art, the utility model provides a novel coal mill external air seal device.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a new type of coal mill external air sealing device, including a locking pipe clamp, the outer surface of the locking pipe clamp is fixedly connected to a limiting mechanism, and the inner side surface of the locking pipe clamp is slidably connected to a sealing mechanism, the limiting mechanism includes an externally threaded pipe fixedly connected to the outer surface of the locking pipe clamp, the outer surface of the externally threaded pipe is threadedly connected to a splicing block, the sealing mechanism includes a rubber air cushion slidably connected to the inner side surface of the locking pipe clamp, the outer surface of the rubber air cushion is fixedly connected to an inflation nozzle, and one end of the inflation nozzle passes through the outer surface of the locking pipe clamp and is fixedly connected to a sealing plug.

[0008] As a preferred solution of the new coal mill external air sealing device of the utility model, two groups of positioning protrusions are fixedly connected to the outer surface of the rubber air cushion, and limiting protrusions are fixedly connected between the positioning protrusions, and the limiting protrusions adopt a convex structure.

[0009] By adopting the above technical solution, the limiting protrusion can prevent the limiting protrusion and the locking pipe clamp from separating.

[0010] As a preferred solution of the new coal mill external air sealing device described in the utility model, the inner side surface of the locking pipe clamp is provided with a positioning groove used in conjunction with the positioning protrusion, and the inner side surface of the locking pipe clamp is also provided with a limiting groove used in conjunction with the limiting protrusion.

[0011] By adopting the above technical solution, the outer surface of the rubber air cushion can be closely fitted with the inner side surface of the locking pipe clamp through the limiting groove and the limiting protrusion, thereby improving the sealing performance of the locking pipe clamp.

[0012] As a preferred solution of the new type of coal mill external air sealing device described in the utility model, the inner side surface of the splicing block is fixedly connected to a spring, the lower end of the spring is fixedly connected to a pressure plate, the pressure plate is slidably connected to the inner side surface of the external threaded pipe, and the outer surface of the pressure plate is in contact with the outer surface of the rubber air cushion.

[0013] By adopting the above technical solution, the outer surface of the rubber air cushion can be easily limited by the pressure plate.

[0014] As a preferred solution of the novel coal mill external air sealing device of the utility model, the outer surface of the splicing block is threadedly connected with a screw, and the other end of the screw is threadedly connected to the outer surface of another group of the splicing blocks.

[0015] By adopting the above technical solution, the two groups of splicing blocks can be easily assembled by screws, so that the splicing blocks and the pressure plate can limit the outer surface of the rubber air cushion.

[0016] As a preferred solution of the novel coal mill external air sealing device of the utility model, four groups of externally threaded pipes are provided, and the externally threaded pipes are staggeredly arranged on the upper surface and the lower surface of the locking pipe clamp.

[0017] By adopting the above technical solution, the sealing performance of the rubber air cushion is increased by making the splicing position of the external threaded pipe and the splicing position of the locking pipe clamp different.

[0018] (III) Beneficial effects

[0019] The utility model provides a novel coal mill external air seal device, which has the following beneficial effects:

[0020] 1. Pass the inflation nozzle through the outer surface of the locking pipe clamp and then press the rubber air cushion to deform the limiting protrusion and then enter the limiting groove. Then insert the positioning protrusion into the positioning groove, so as to facilitate the outer surface of the rubber air cushion to fit the inner surface of the locking pipe clamp. When the rubber air cushion needs to be replaced, press the inflation nozzle, and one end of the inflation nozzle will lift up the outer surface of the rubber air cushion, so as to facilitate the grasping of the outer surface of the rubber air cushion, and facilitate the separation of the rubber air cushion and the locking pipe clamp, so as to facilitate the replacement of the rubber air cushion.

[0021] 2. By sleeved two sets of splicing blocks on the outer surface of the coal mill, the two sets of splicing blocks are fixed together with screws, and then the splicing blocks are rotated so that the inner side of the splicing blocks are threadedly connected with the outer surface of the external threaded pipe, and then the splicing blocks are slid downward along the outer surface of the external threaded pipe, so that the outer surface of the pressure plate and the outer surface of the rubber air cushion are fitted, thereby facilitating the limiting of the outer surface of the rubber air cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model.

[0025] Figure 3 It is a front structural schematic diagram of the rubber air cushion in the utility model.

[0026] Figure 4 It is a front structural schematic diagram of the locking pipe clamp in the utility model when it is unfolded.

[0027] In the figure, 1. locking pipe clamp; 2. limiting mechanism; 201. spring; 202. pressure plate; 203. screw; 204. splicing block; 205. external threaded pipe; 3. sealing mechanism; 301. rubber air cushion; 302. inflation nozzle; 303. positioning protrusion; 304. limiting protrusion; 305. positioning groove; 306. limiting groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4, which is the first embodiment of the utility model, and this embodiment provides a novel coal mill external air sealing device, including a locking pipe clamp 1, the outer surface of the locking pipe clamp 1 is fixedly connected to a limiting mechanism 2, and the inner side surface of the locking pipe clamp 1 is slidably connected to a sealing mechanism 3, the sealing mechanism 3 includes a rubber air cushion 301 slidably connected to the inner side surface of the locking pipe clamp 1, the outer surface of the rubber air cushion 301 is fixedly connected to an inflation nozzle 302, and one end of the inflation nozzle 302 passes through the outer surface of the locking pipe clamp 1 and is fixedly connected to a sealing plug.

[0031] Specifically, the outer surface of the rubber air cushion 301 is fixedly connected with two groups of positioning protrusions 303, and the positioning protrusions 303 are fixedly connected with limiting protrusions 304. The limiting protrusions 304 adopt a convex structure, wherein the inner side surface of the locking pipe clamp 1 is provided with a positioning groove 305 used to cooperate with the positioning protrusions 303, and the inner side surface of the locking pipe clamp 1 is also provided with a limiting groove 306 used to cooperate with the limiting protrusions 304.

[0032] The inflation nozzle 302 is further passed through the outer surface of the locking pipe clamp 1, and then the rubber air cushion 301 is pressed, so that the limiting protrusion 304 is deformed and then enters the limiting groove 306, and then the positioning protrusion 303 is inserted into the positioning groove 305, so as to facilitate the outer surface of the rubber air cushion 301 to fit the inner side of the locking pipe clamp 1, and then the sealing plug on the outer surface of the inflation nozzle 302 is opened, and inert gas is filled into the rubber air cushion 301, so that the rubber air cushion 301 expands, and then the outer surface of the rubber air cushion 301 can squeeze the outer surface of the pressure plate 202, thereby increasing the sealing between the splicing block 204 and the locking pipe clamp 1.

[0033] Example 2

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment. The limiting mechanism 2 includes an externally threaded tube 205 fixedly connected to the outer surface of the locking pipe clamp 1, and the outer surface of the externally threaded tube 205 is threadedly connected with a splicing block 204.

[0035] Specifically, the inner side surface of the splicing block 204 is fixedly connected with a spring 201, and the lower end of the spring 201 is fixedly connected with a pressure plate 202. The pressure plate 202 is slidably connected to the inner side surface of the external threaded tube 205, and the lower surface of the pressure plate 202 is in contact with the outer surface of the rubber air cushion 301, wherein the outer surface of the splicing block 204 is threadedly connected with a screw 203, and the other end of the screw 203 is threadedly connected to the outer surface of another group of splicing blocks 204, wherein four groups of external threaded tubes 205 are provided, and the external threaded tubes 205 are staggeredly provided on the upper and lower surfaces of the locking pipe clamp 1, so that the splicing parts of the external threaded tubes 205 and the splicing parts of the locking pipe clamp 1 do not overlap.

[0036] The two groups of splicing blocks 204 are further sleeved on the outer surface of the coal mill, and the two groups of splicing blocks 204 are fixed together using screws 203, and then the splicing blocks 204 are rotated so that the inner side surfaces of the splicing blocks 204 are threadedly connected with the outer surface of the external threaded tube 205, thereby allowing the splicing blocks 204 to slide downward along the outer surface of the external threaded tube 205, so that the outer surface of the pressure plate 202 fits with the outer surface of the rubber air cushion 301, thereby facilitating the limiting of the outer surface of the rubber air cushion 301.

[0037] Working principle: When in use, first pass the inflation nozzle 302 through the outer surface of the locking pipe clamp 1, and then press the rubber air cushion 301 to deform the limiting protrusion 304 and then enter the limiting groove 306, and then insert the positioning protrusion 303 into the positioning groove 305, so as to facilitate the outer surface of the rubber air cushion 301 to fit the inner side surface of the locking pipe clamp 1, and then use bolts to fix the locking pipe clamp 1 to the outer surface of the coal mill, and then put the two sets of splicing blocks 204 on the outer surface of the coal mill, use screws 203 to fix the two sets of splicing blocks 204 together, and then rotate the splicing block 204 so that the inner side surface of the splicing block 204 is threadedly connected to the outer surface of the external threaded pipe 205, so that the splicing block 204 is connected along the external threaded pipe 2 05 slides downward so that the outer surface of the pressure plate 202 and the outer surface of the rubber air cushion 301 fit together, and then the sealing plug on the outer surface of the inflation nozzle 302 is opened, and inert gas is filled into the rubber air cushion 301 to expand the rubber air cushion 301, so that the outer surface of the rubber air cushion 301 can squeeze the outer surface of the pressure plate 202, thereby increasing the sealing between the splicing block 204 and the locking pipe clamp 1. When the rubber air cushion 301 needs to be replaced, the inflation nozzle 302 is pressed, and one end of the inflation nozzle 302 lifts up the outer surface of the rubber air cushion 301, thereby facilitating the grasping of the outer surface of the rubber air cushion 301, facilitating the separation of the rubber air cushion 301 and the locking pipe clamp 1, and thereby facilitating the replacement of the rubber air cushion 301.

[0038] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A novel coal mill external gas sealing device, comprising a locking pipe clamp (1), Features: The outer surface of the locking pipe clamp (1) is fixedly connected to a limiting mechanism (2), and the inner side surface of the locking pipe clamp (1) is slidably connected to a sealing mechanism (3); The limiting mechanism (2) comprises an externally threaded tube (205) fixedly connected to the outer surface of the locking tube clamp (1), and the outer surface of the externally threaded tube (205) is threadedly connected to a splicing block (204); The sealing mechanism (3) comprises a rubber air cushion (301) slidably connected to the inner side of the locking pipe clamp (1), an outer surface of the rubber air cushion (301) is fixedly connected to an inflation nozzle (302), and one end of the inflation nozzle (302) passes through the outer surface of the locking pipe clamp (1) and is fixedly connected to a sealing plug.

2. A novel coal mill external gas seal device according to claim 1, Features: Two groups of positioning protrusions (303) are fixedly connected to the outer surface of the rubber air cushion (301), and a limiting protrusion (304) is fixedly connected between the positioning protrusions (303), and the limiting protrusion (304) adopts a convex-shaped structure.

3. A novel coal mill external gas seal device according to claim 2, Features: The inner side surface of the locking pipe clamp (1) is provided with a positioning groove (305) for use with the positioning protrusion (303), and the inner side surface of the locking pipe clamp (1) is also provided with a limiting groove (306) for use with the limiting protrusion (304).

4. A novel coal mill external gas seal device according to claim 1, Features: The inner side surface of the splicing block (204) is fixedly connected to a spring (201), the lower end of the spring (201) is fixedly connected to a pressure plate (202), the pressure plate (202) is slidably connected to the inner side surface of the externally threaded tube (205), and the outer surface of the pressure plate (202) is in contact with the outer surface of the rubber air cushion (301).

5. A novel coal mill external gas seal device according to claim 4, Features: The outer surface of the splicing block (204) is threadedly connected with a screw (203), and the other end of the screw (203) is threadedly connected to the outer surface of another group of splicing blocks (204).

6. A novel coal mill external gas seal device according to claim 1, Features: Four groups of externally threaded pipes (205) are provided, and the externally threaded pipes (205) are staggeredly provided on the upper surface and the lower surface of the locking pipe clamp (1).

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