Sealing device for loading pull rod of coal mill

Abstract

The invention discloses a coal mill loading pull rod sealing device which comprises a first shell and a second shell, the section of the first shell and the section of the second shell are semicircular, first connecting blocks are arranged at the two ends of the first shell, and second connecting blocks are arranged at the two ends of the second shell; the mounting plate is fixedly connected to the lower ends of the shell I and the shell II; the pull rod is located between the first shell and the second shell. The adjusting part is located in the position between the first shell and the second shell and comprises a first clamping piece, a second clamping piece, a buffer structure and an inflation structure, the first clamping piece is fixedly connected to the surface of the pull rod and connected with the second clamping piece in a clamped mode, an air bag is arranged at one end of the second clamping piece, a support is arranged at the other end of the air bag, and the air bag is connected with the air bag through a connecting rod. The buffer structures are connected to the two ends of the support, and the inflation structure is located on one side of the support. And the inserting structure is located in the first connecting block and the second connecting block. Compared with the prior art, the pull rod has the advantages that the air bag can be automatically inflated and deflated in the use process of the pull rod, and leakage at the moving position of the pull rod is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of loading rod sealing, in particular to a loading rod sealing device for a coal mill. Background Art

[0002] During the pulverizing process of the medium-speed roller-disc coal mill, the roller of the coal mill is pressed on the working surface of the grinding disc of the coal mill through three 100mm diameter pull rods under the action of the 10Mpa oil pressure of the high-pressure oil station. The vertical rotating shaft of the coal mill drives the grinding disc to rotate, and the grinding disc drives the roller. The relative movement of the roller and the grinding disc crushes the coal into powder. The hot air (320℃) from the air preheater is blown into the coal mill from bottom to top to take away the qualified coal powder, thus completing the pulverizing process. In the production process, in order to prevent the hot air from carrying coal powder and leaking from the coal mill loading rod, the existing equipment adopts carbon fiber ring seal. Because this type of material has no effective elasticity, and the coal mill loading rod is inevitably eccentric, the carbon fiber ring often breaks and wears seriously. The leakage of the seal will cause the hot air and coal powder to leak at the same time. When the gap is large, the stone coal will leak out, polluting the environment, generating whistling sound, increasing environmental noise, which is not conducive to civilized production, and has serious hidden dangers of personnel burns and environmental pollution.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a coal mill loading tie rod sealing device, in which the airbag can be automatically inflated and deflated during the use of the tie rod to avoid leakage at the tie rod.

[0005] In order to solve the above problems, the technical solution of the present invention is: a coal mill loading rod sealing device, comprising a shell one and a shell two, the shell one and the shell two are semicircular in cross section, the shell one is provided with a connecting block one at both ends, and the shell two is provided with a connecting block two at both ends;

[0006] A mounting plate, the mounting plate being fixedly connected to the lower ends of the first shell and the second shell;

[0007] A pull rod, the pull rod is located between the first shell and the second shell;

[0008] An adjusting component, the adjusting component is located inside the housing 1 and the housing 2, the adjusting component comprises a first clamping component, a second clamping component, a buffer structure, and an inflatable structure, the first clamping component is fixedly connected to the surface of the pull rod, the first clamping component is clamped to the second clamping component, an airbag is provided at one end of the second clamping component, a bracket is provided at the other end of the airbag, the buffer structure is connected to both ends of the bracket, and the inflatable structure is located on one side of the bracket;

[0009] The plug-in structure is located inside the connecting block one and the connecting block two.

[0010] Further, the plug-in structure includes:

[0011] Extrusion plates, two of which are symmetrically located inside the second connecting block, one end of each of which is located inside the first connecting block, and one end of each of which is provided with an insert block;

[0012] The guide rod is fixedly connected to the inside of the second connecting block, and the extrusion plate is slidably sleeved on the surface of the guide rod.

[0013] Furthermore, a spring is sleeved on the surface of the guide rod, and the spring is located between the two extrusion plates. Slots are provided on both sides of the connecting block one, and the plug block is inserted into the slots. Cavity two is provided inside the connecting block one, and the cavity two is connected to the slots. Cavity one is provided inside the connecting block two.

[0014] Furthermore, the buffer structure comprises:

[0015] A frame, wherein a spring 1 is arranged inside the frame, and slide plates are arranged at both ends of the spring 1, the slide plates are located inside the frame, and a slide rod is arranged at the other end of the slide plates;

[0016] The mounting groove is fixedly connected to the inside of the first shell and the second shell, and one end of the slide rod is hingedly connected to the mounting groove.

[0017] Furthermore, the inflatable structure includes a cylinder, a slidable rubber plug is provided inside the cylinder, a connecting rod is provided at one end of the rubber plug, and the other end of the connecting rod is fixedly connected to the bracket.

[0018] Furthermore, an air inlet hole is provided on the surface of the cylinder, a pipe is provided on the surface of the cylinder, and the other end of the pipe is connected to the airbag.

[0019] Furthermore, a universal connecting bearing is provided between the housing 1 and the housing 2, the pull rod is located inside the universal connecting bearing, and connecting bolts are provided at the four corners of the mounting plate.

[0020] Furthermore, a positioning block is provided at one end of the shell one, a positioning groove is provided at one end of the shell two, and the positioning block is plugged into the positioning groove.

[0021] The advantages of the present invention compared with the prior art are:

[0022] (1) When the pull rod of the present invention is offset, one end of the pull rod drives the clamping part 1 to move, which in turn drives the clamping part 2 to move, which in turn drives the bracket to move. The two ends of the upper end of the bracket drive the slide bar to slide inside the frame, which in turn drives the slide plate to slide, which can compress the spring 1. One end of the slide bar can rotate inside the installation groove to avoid getting stuck. The elastic force of the spring 1 can make the clamping part 1 tend to move back, thereby avoiding the problem of leakage when the pull rod rotates; at the same time, the bracket drives the connecting rod to move, and the movement of the connecting rod drives the rubber plug to move. The rubber plug squeezes the air inside the cylinder so that the air enters the airbag through the pipe, inflating the airbag, and making the airbag close to the clamping part 2;

[0023] (2) When the shell 1 and the shell 2 need to be disassembled, the two extrusion plates are squeezed toward the center, and the two extrusion plates slide on the surface of the guide rod, and the spring is compressed at the same time, and the two plug blocks are separated from the slots, so that one end of the extrusion plate can be separated from the connecting block 1, thereby separating the connecting block 1 and the connecting block 2, and thus separating the shell 1 and the shell 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a stereoscopic diagram of a coal mill loading rod sealing device according to the present invention.

[0025] Figure 2 The present invention is a diagram of the internal structure of a coal mill loading rod sealing device.

[0026] Figure 3 It is an enlarged view of point A of a coal mill loading rod sealing device of the present invention.

[0027] Figure 4 It is an enlarged view of point B of a coal mill loading rod sealing device of the present invention.

[0028] Figure 5 It is an enlarged view of point C of a coal mill loading rod sealing device of the present invention.

[0029] Figure 6 The present invention is a plug-in structure diagram of a coal mill loading rod sealing device.

[0030] Figure 7 The internal structure diagram of the housing 1 and housing 2 of the coal mill loading rod sealing device of the present invention

[0031] As shown in the figure: 1. Shell 1; 2. Shell 2; 3. Connecting block 1; 4. Connecting block 2; 5. Mounting plate; 6. Pull rod; 7. Adjustment component; 8. Plug-in structure; 9. Extrusion plate; 10. Guide rod; 11. Plug block; 12. Spring; 13. Slot; 14. Cavity 1; 15. Cavity 2; 16. Clip 1; 17. Clip 2; 18. Airbag; 19. Bracket; 20. Buffer structure; 21. Inflatable structure; 22. Frame; 23. Spring 1; 24. Slide plate; 25. Slide rod; 26. Mounting groove; 27. Cylinder; 28. Rubber plug; 29. ​​Connecting rod; 30. Pipeline; 31. Air inlet; 32. Connecting bearing; 33. Connecting bolt; 34. Positioning block; 35. Positioning groove. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0033] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0034] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] Embodiment 1

[0036] like Figure 1 As shown in Figure 1, a coal mill loading rod sealing device includes a shell 1 and a shell 2. The cross-sections of the shell 1 and the shell 2 are semicircular. The shell 1 and the shell 2 are used together to form a cylindrical outer sleeve. A positioning block 34 is installed at one end of the shell 1, and a positioning groove 35 is provided at one end of the shell 2. The positioning block 34 is inserted into the positioning groove 35, so that the shell 1 and the shell 2 can be spliced.

[0037] Connecting blocks 1 3 are installed at both ends of shell 1, and connecting blocks 2 4 are installed at both ends of shell 2. The positions of connecting blocks 1 3 and connecting blocks 2 4 correspond to each other. Empty grooves are provided inside connecting blocks 1 3 and connecting blocks 2 4. The plug-in structure 8 is located inside connecting blocks 1 3 and connecting blocks 2 4, which can connect connecting blocks 1 3 and connecting blocks 2 4, thereby fixing shell 1 and shell 2 2.

[0038] The plug-in structure 8 includes an extrusion plate 9, two extrusion plates 9 are symmetrically located inside the connecting block 2 4, one end of the extrusion plate 9 is located inside the connecting block 1 3, an insert block 11 is installed at one end of the extrusion plate 9, slots 13 are provided on both sides inside the connecting block 1 3, and the insert block 11 is plugged into the slot 13, thereby connecting the connecting block 1 3 and the connecting block 2 4.

[0039] The guide rod 10 is fixedly installed inside the second connecting block 4. The extrusion plate 9 is slidably sleeved on the surface of the guide rod 10. A spring 12 is sleeved on the surface of the guide rod 10. The spring 12 is located between the two extrusion plates 9. The elastic force of the spring 12 causes the insertion block 11 to insert into the slot 13. A cavity two 15 is opened inside the first connecting block 3. The cavity two 15 is connected to the slot 13. A cavity one 14 is opened inside the second connecting block 4...

[0040] When it is necessary to disassemble the first housing 1 and the second housing 2, the two extrusion plates 9 are squeezed towards the center. The two extrusion plates 9 slide on the surface of the guide rod 10, and at the same time compress the spring 12. The two insertion blocks 11 disengage from the slot 13... One end of the extrusion plate 9 can be disengaged from the first connecting block 3, so that the first connecting block 3 and the second connecting block 4 can be separated, and thus the first housing 1 and the second housing 2 can be separated.

[0041] The mounting plate 5 is fixedly installed at the lower ends of the first housing 1 and the second housing 2. Connecting bolts 33 are installed at the four corners of the mounting plate 5 for connecting with the coal mill.

[0042] The pull rod 6 is located between the first housing 1 and the second housing 2. A universal joint bearing 32 is installed between the first housing 1 and the second housing 2. The pull rod 6 is located inside the universal joint bearing 32, and the pull rod 6 can be rotated.

[0043] The adjusting component 7 is located inside between the first housing 1 and the second housing 2. The adjusting component 7 includes a first clamping part 16, a second clamping part 17, a buffer structure 20, and an inflation structure 21. The first clamping part 16 is fixedly installed on the surface of the pull rod 6. The first clamping part 16 clamps the second clamping part 17. The first clamping part 16 is in the shape of a "mountain". The second clamping part 17 cooperates with the first clamping part 17. One end of the second clamping part 17 is installed with an airbag 18. The other end of the airbag 18 is installed with a bracket 19. The buffer structure 20 is connected to both ends of the bracket 19. The inflation structure 21 is located on one side of the bracket 19.

[0044] The buffer structure 20 includes a frame body 22. A first spring 23 is installed inside the frame body 22. Both ends of the first spring 23 are installed with sliding plates 24. The sliding plates 24 are located inside the frame body 22. The other end of the sliding plate 24 is installed with a sliding rod 25; The installation groove 26 is fixedly connected to the inside of the first housing 1 and the second housing 2. One end of the sliding rod 25 is hinged to the installation groove 26.

[0045] The inflation structure 21 includes a cylinder body 27. A slidable rubber plug 28 is installed inside the cylinder body 27. One end of the rubber plug 28 is installed with a connecting rod 29. The other end of the connecting rod 29 is fixedly connected to the bracket 19.

[0046] An air inlet hole 31 is installed on the surface of the cylinder body 27. A pipeline 30 is installed on the surface of the cylinder body 27. The other end of the pipeline 30 is connected to the airbag 18.

[0047] When the pull rod 6 is rotated to cause the pull rod 6 to deviate, one end of the pull rod 6 drives the clamping part 16 to move, and then drives the clamping part 2 17 to move, and then drives the bracket 19 to move. The two ends of the upper end of the bracket 19 drive the sliding rod 25 to slide inside the frame 22, and then drives the slide plate 24 to slide, which can compress the spring 1 23. One end of the sliding rod 25 can rotate inside the installation groove 26 to avoid getting stuck. The elastic force of the spring 1 23 can make the clamping part 16 tend to move back, thereby avoiding the problem of leakage when the pull rod 6 is rotated.

[0048] At the same time, the bracket 19 drives the connecting rod 29 to move, and the movement of the connecting rod 29 drives the rubber plug 28 to move. The rubber plug 28 squeezes the air inside the cylinder 27 so that the air enters the airbag 18 through the pipe 30, inflating the airbag 18, so that the airbag 18 can be close to the clamping piece 17.

[0049] The other end of the pull rod 6 also drives the clamping part 16 to move, and then drives the clamping part 2 17 to move, and then drives the bracket 19 to move. The two ends of the upper end of the bracket 19 drive the sliding rod 25 to slide inside the frame 22, and then drives the slide plate 24 to slide, which can compress the spring 1 23. One end of the sliding rod 25 can rotate inside the installation groove 26 to avoid getting stuck. The elastic force of the spring 1 23 can make the clamping part 16 tend to move back, thereby avoiding the problem of leakage when the pull rod 6 rotates.

[0050] At the same time, the bracket 19 drives the connecting rod 29 to move, and the movement of the connecting rod 29 drives the rubber plug 28 to move. The rubber plug 28 puts the inside of the cylinder 27 in a negative pressure state, so that the air inside the airbag 30 enters the inside of the cylinder 27 through the pipe 30, deflates the airbag 18, and balance adjustment can be performed.

[0051] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A coal mill loading rod sealing device, characterized in that: include: Shell 1 (1) and shell 2 (2), wherein the cross-sections of shell 1 (1) and shell 2 (2) are semicircular, two ends of shell 1 (1) are provided with connecting blocks 1 (3), and two ends of shell 2 (2) are provided with connecting blocks 2 (4); A mounting plate (5), the mounting plate (5) being fixedly connected to the lower ends of the first shell (1) and the second shell (2); A pull rod (6), wherein the pull rod (6) is located between the first shell (1) and the second shell (2); An adjusting component (7), the adjusting component (7) is located inside the housing (1) and the housing (2), the adjusting component (7) comprises a clamping component (16), a clamping component (17), a buffer structure (20), and an inflatable structure (21), the clamping component (16) is fixedly connected to the surface of the pull rod (6), the clamping component (16) is clamped to the clamping component (17), an air bag (18) is provided at one end of the clamping component (17), a bracket (19) is provided at the other end of the air bag (18), the buffer structure (20) is connected to both ends of the bracket (19), and the inflatable structure (21) is located on one side of the bracket (19); A plug-in structure (8), wherein the plug-in structure (8) is located inside the first connecting block (3) and the second connecting block (4).

2. A coal mill loading rod sealing device according to claim 1, characterized in that: The plug-in structure (8) comprises: An extrusion plate (9), wherein the two extrusion plates (9) are symmetrically located inside the second connecting block (4), one end of the extrusion plate (9) is located inside the first connecting block (3), and an insert block (11) is provided at one end of the extrusion plate (9); A guide rod (10) is fixedly connected to the interior of the second connecting block (4), and the extrusion plate (9) is slidably sleeved on the surface of the guide rod (10).

3. A coal mill loading rod sealing device according to claim 2, characterized in that: The surface of the guide rod (10) is sleeved with a spring (12), the spring (12) is located between the two extrusion plates (9), the connecting block (3) is provided with slots (13) on both sides, the inserting block (11) is inserted into the slots, the connecting block (3) is provided with a cavity (15) inside, the cavity (15) is connected to the slot (13), and the connecting block (4) is provided with a cavity (14) inside.

4. A coal mill loading rod sealing device according to claim 1, characterized in that: The buffer structure (20) comprises: A frame (22), wherein a spring (23) is provided inside the frame (22), slide plates (24) are provided at both ends of the spring (23), the slide plate (24) is located inside the frame (22), and a slide rod (25) is provided at the other end of the slide plate (24); The mounting groove (26) is fixedly connected to the inside of the first shell (1) and the second shell (2), and one end of the slide rod (25) is hingedly connected to the mounting groove (26).

5. A coal mill loading rod sealing device according to claim 1, characterized in that: The inflatable structure (21) comprises a cylinder (27), a slidable rubber plug (28) is provided inside the cylinder (27), a connecting rod (29) is provided at one end of the rubber plug (28), and the other end of the connecting rod (29) is fixedly connected to the bracket (19).

6. A coal mill loading rod sealing device according to claim 5, characterized in that: An air inlet hole (31) is provided on the surface of the cylinder (27), a pipe (30) is provided on the surface of the cylinder (27), and the other end of the pipe (30) is connected to the air bag (18).

7. A coal mill loading rod sealing device according to claim 1, characterized in that: A universal connecting bearing (32) is provided between the housing 1 (1) and the housing 2 (2), the pull rod (6) is located inside the universal connecting bearing (32), and connecting bolts (33) are provided at the four corners of the mounting plate (5).

8. A coal mill loading rod sealing device according to claim 1, characterized in that: A positioning block (34) is provided at one end of the first shell (1), a positioning groove (35) is provided at one end of the second shell (2), and the positioning block (34) is plugged into the positioning groove (35).

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