Pull rod sealing structure

Abstract

The utility model discloses a pull rod sealing structure, and particularly relates to the technical field of coal mill sealing, the pull rod sealing structure comprises a coal mill body, an upper sealing mechanism and a lower sealing mechanism, the upper sealing mechanism comprises two sealing sleeve plates, the inner sides of the two sealing sleeve plates are both movably sleeved with clamping blocks, and the lower sealing mechanism is sleeved with a pull rod. The lower sealing mechanism comprises a first clamping sleeve plate and a second clamping sleeve plate, fastening bolts are arranged between the first clamping sleeve plate and the coal mill body, fastening bolts are arranged between the second clamping sleeve plate and the coal mill body, and sealing gaskets are arranged on the inner side of the first clamping sleeve plate and the inner side of the second clamping sleeve plate. The outer side of the top of the pull rod can be sealed through the sealing sleeve plate and the clamping blocks, meanwhile, the sealing sleeve plate can be fixed through the connecting bolts, the outer side of the bottom of the pull rod can be sealed through the first clamping sleeve plate, the second clamping sleeve plate and the sealing gasket, and therefore the sealing effect of the pull rod in the working process can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mill sealing technical field, concretely relates to a pull rod sealing structure. BACKGROUND

[0002] The coal mill is the mechanical that will coal block break and grind into coal powder, is the important auxiliary equipment of coal powder furnace. It is widely used in thermal power station, cement industry, metallurgical industry, chemical industry and so on field, is used for smashing various hardness's coal and other materials. In the coal mill, the pull rod sealing is an important component, the effect of pull rod sealing is to ensure that the wear and tear of wear and tear does not leak to the outside of equipment, avoids environmental pollution, simultaneously, can effectively prevent the air layer between wear and tear and steel sleeve from explosion and heat loss, guarantees the stable operation and energy saving of equipment. In addition, the pull rod sealing can also protect the service life of internal wear and tear, reduce cost and downtime.

[0003] The utility model discloses a coal mill pull rod sealing structure of CN216407730U, including upper casing, the upper casing bottom end is close to the setting of lifting groove at the hole, the inner wall on the top of lifting groove is fixedly connected with return spring, the bottom of return spring is fixedly connected with lifting block, the two convex rings of lifting block bottom are located in the inside of sealing pad respectively. In the utility model, first, the two convex rings of lifting block bottom are in rubber pad, and the upper casing and lower casing are fixed through the installation bolt cooperation mounting nut, the sealing pad in rubber pad is extruded to the lifting block under the action of return spring, and then the sealing effect is played, and the sealing property when the upper casing and lower casing are connected is further improved with the cooperation of sealing ring, after connecting well, the rubber plug is inserted into the installation hole, so that the installation bolt is prevented from rusting for a long time, and the subsequent disassembly is affected, so that the operator disassembles conveniently.

[0004] The deficiencies in the prior art: the internal structure of the existing pull rod sealing structure cannot be kept stable when in use, the connection position is prone to looseness when the pull rod floats up and down, which will affect the sealing effect and the working state of the coal mill, and will also affect the service life of the sealing structure and the coal mill. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a pull rod sealing structure to solve the problem that the sealing effect is affected and the working state of the coal mill is affected when the pull rod floats up and down due to the instability of the sealing structure in the prior art.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a pull rod sealing structure, comprising a coal mill body, further comprising:

[0007] Upper sealing mechanism, set in the top of the coal mill body outside, for the upper half of the coal mill body sealing;

[0008] Lower sealing mechanism, set in the bottom of the coal mill body outside, for the lower half of the coal mill body sealing;

[0009] The upper sealing mechanism comprises two sealing sleeve plates, two clamping blocks movably sleeved on the inner side of the sealing sleeve plates, and connecting bolts arranged between the inner walls of the sealing sleeve plates and the inner walls of the coal mill body.

[0010] The lower sealing mechanism comprises a first clamping sleeve plate and a second clamping sleeve plate, fastening bolts are arranged between the first clamping sleeve plate, the second clamping sleeve plate and the coal mill body, and sealing pads are arranged on the inner sides of the first clamping sleeve plate and the second clamping sleeve plate.

[0011] Preferably, the coal mill body comprises a fixed plate, a pull rod is movably inserted into the inner wall of the fixed plate, and a plurality of mounting holes are annularly and equidistantly formed in the inner wall of the fixed plate located outside the pull rod.

[0012] Preferably, a plurality of first fixing holes are annularly and equidistantly formed in the inner wall of the sealing sleeve plate, the inner wall of the first fixing hole is threadedly connected with the outer wall of the adjacent connecting bolt, and the bottom outer wall of the connecting bolt is threadedly connected with the inner wall of the adjacent mounting hole.

[0013] Preferably, a plurality of connecting holes aligned with the mounting holes are annularly and equidistantly formed in the inner wall of the top of the first clamping sleeve plate and the second clamping sleeve plate, and the inner wall of the connecting hole is threadedly connected with the bottom outer wall of the adjacent connecting bolt.

[0014] Preferably, the two clamping blocks are sleeved on the top outer wall of the pull rod, and the two sealing pads are sleeved on the bottom outer side of the pull rod.

[0015] Preferably, a plurality of second fixing holes are annularly and equidistantly formed in the inner wall of the bottom of the first clamping sleeve plate and the second clamping sleeve plate, a fastening pin is threadedly inserted into the inner wall of the second fixing hole, and the top of the fastening pin is threadedly connected with the bottom inner wall of the adjacent sealing pad.

[0016] Preferably, connecting grooves are formed at the top of the two ends of the outer wall of the side close to the second clamping sleeve plate of the first clamping sleeve plate, plug-in plates are fixedly installed at the top of the two ends of the outer wall of the side close to the first clamping sleeve plate of the second clamping sleeve plate, and the connecting grooves are movably connected with the adjacent plug-in plates.

[0017] Preferably, the inner diameter of the clamping block is the same as the outer diameter of the top of the pull rod, and the inner diameter of the sealing pad is the same as the outer diameter of the bottom of the pull rod.

[0018] The utility model has the advantages that:

[0019] 1. This utility model allows for the installation and fixation of the sealing sleeve plate via the connection between the connecting bolt and the mounting hole. The sealing sleeve plate can also fix the clamping block. The sealing sleeve plate and the clamping block can seal the outer top of the pull rod. The fastening bolt can install and fix the first clamping sleeve plate and the second clamping sleeve plate. The fastening pin can pass through the second fixing hole and be threaded to the inner wall of the bottom of the adjacent sealing gasket to fix the sealing gasket. The first clamping sleeve plate, the second clamping sleeve plate, and the two sealing gaskets can seal the outer bottom of the pull rod. Thus, when the pull rod floats up and down, the upper sealing mechanism and the lower sealing mechanism can stably seal the top and bottom of the pull rod, ensuring the sealing effect.

[0020] 2. This utility model makes the connection between the first clamping sleeve plate and the second clamping sleeve plate more secure through the connection between the connecting groove and the plug plate, thereby enabling the first clamping sleeve plate and the second clamping sleeve plate to tightly seal the bottom of the pull rod. Attached Figure Description

[0021] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a partial cross-sectional view of the present invention;

[0025] Figure 3 This utility model Figure 2 Enlarged view of part A;

[0026] Figure 4 This is a three-dimensional structural diagram of the coal mill body of this utility model;

[0027] Figure 5 This is an exploded three-dimensional view of the upper sealing mechanism of this utility model;

[0028] Figure 6 The utility model discloses a lower sealing mechanism three -dimensional structure explosion map.

[0029] In the drawing: 1, coal mill body;101, fixed plate;102, pull rod;103, mounting hole;

[0030] 2, upper sealing mechanism;201, sealing sleeve plate;202, first fixed hole;203, connecting bolt;204, clamping block;

[0031] 3, lower sealing mechanism;301, first clamping sleeve plate;302, connecting groove;303, second clamping sleeve plate;304, plug-in board;305, fastening bolt;306, sealing gasket;307, second fixed hole;308, fastening pin;309, connecting hole. DETAILED DESCRIPTION

[0032] The following by specific embodiment the embodiment of the utility model is explained to the person skilled in the art can easily understand the other advantages and efficacy of the utility model from the content disclosed in the specification, obviously, the described embodiment is the utility model a part of embodiment, instead of all embodiments. Based on the embodiment in the utility model, all other embodiments that the person skilled in the art obtains without making creative labor belong to the scope of the utility model protection.

[0033] Referring to the drawings of the specification Figure 1 The utility model provides a pull rod sealing structure, including coal mill body 1, still include:

[0034] Upper sealing mechanism 2 sets up in the top outside of coal mill body 1, is used to seal the upper half of coal mill body 1 to the part;

[0035] Lower sealing mechanism 3 sets up in the bottom outside of coal mill body 1, is used to seal the lower half of coal mill body 1 to the part.

[0036] In order to stably seal the top outside of pull rod 102, as shown in Figures 1-3 And Figure 5 Upper sealing mechanism 2 includes two sealing sleeve plates 201, two sealing sleeve plates 201 inside are movably sleeved with clamping block 204, and the connecting bolt 203 is arranged between the inner wall of sealing sleeve plate 201 and the inner wall of coal mill body 1, two sealing sleeve plates 201 can be installed and fixed through connecting bolt 203, and sealing sleeve plate 201 and clamping block 204 can seal the top outside of pull rod 102.

[0037] In order to stably seal the bottom outside of pull rod 102, as shown in Figures 1-2 And Figure 6As shown, the lower sealing mechanism 3 includes a first clamping sleeve plate 301 and a second clamping sleeve plate 303, and fastening bolts 305 are arranged between the first clamping sleeve plate 301, the second clamping sleeve plate 303 and the coal mill body 1. The inner sides of the first clamping sleeve plate 301 and the second clamping sleeve plate 303 are provided with sealing pads 306. The first clamping sleeve plate 301 and the second clamping sleeve plate 303 can be installed and fixed by the fastening bolts 305. The combination of the first clamping sleeve plate 301, the second clamping sleeve plate 303 and the sealing pads 306 can seal the outer side of the bottom of the pull rod 102.

[0038] In order to enable the sealing sleeve plate 201 to stably seal the pull rod 102, as shown in Figures 1-5 As shown, the coal mill body 1 includes a fixed plate 101, and the pull rod 102 is movably inserted into the inner wall of the fixed plate 101. A plurality of installation holes 103 are arranged at equal intervals in the inner wall of the fixed plate 101 located outside the pull rod 102. A plurality of first fixing holes 202 are arranged at equal intervals in the inner wall of the sealing sleeve plate 201. The inner wall of the first fixing hole 202 is threadedly connected with the outer wall of the adjacent connecting bolt 203. The bottom outer wall of the connecting bolt 203 is threadedly connected with the inner wall of the adjacent installation hole 103. The connecting bolt 203 penetrates through the first fixing hole 202 and is threadedly connected with the inner wall of the adjacent installation hole 103, so that the sealing sleeve plate 201 can stably seal the pull rod 102.

[0039] In order to enable the upper sealing mechanism 2 and the lower sealing mechanism 3 to be tightly connected, as shown in Figures 2-3 and Figures 5-6 The top inner walls of the first clamping sleeve plate 301 and the second clamping sleeve plate 303 are both arranged with a plurality of connecting holes 309 aligned with the installation holes 103. The inner wall of the connecting hole 309 is threadedly connected with the bottom outer wall of the adjacent connecting bolt 203. The connection between the connecting bolt 203 and the connecting hole 309 enables the upper sealing mechanism 2 and the lower sealing mechanism 3 to be tightly connected together, so that the upper sealing mechanism 2 and the lower sealing mechanism 3 can stably seal the pull rod 102.

[0040] In order to enable the clamping blocks 204 and the sealing pads 306 to stably seal the pull rod 102, as shown in Figures 2-6 The two clamping blocks 204 are respectively sleeved on the top outer wall of the pull rod 102, and the two sealing pads 306 are respectively sleeved on the outer side of the bottom of the pull rod 102. The inner diameter of the clamping block 204 is the same as the outer diameter of the top of the pull rod 102, and the inner diameter of the sealing pad 306 is the same as the outer diameter of the bottom of the pull rod 102. The two clamping blocks 204 can seal the outer side of the top of the pull rod 102, and the two sealing pads 306 can seal the outer side of the bottom of the pull rod 102.

[0041] In order to enable the sealing pad 306 to stably seal the pull rod 102, as shown in Figure 2 andFigure 6 As shown, the inner walls of the bottoms of the first clamping sleeve plate 301 and the second clamping sleeve plate 303 are provided with a plurality of second fixing holes 307 at equal intervals in a ring shape, and a fastening pin 308 is threadedly connected to the inner walls of the second fixing holes 307, the top of the fastening pin 308 is threadedly connected to the inner wall of the bottom of the adjacent sealing gasket 306, the fastening pin 308 penetrates the second fixing hole 307 and is threadedly connected to the inner wall of the adjacent sealing gasket 306, so that the first clamping sleeve plate 301 and the second clamping sleeve plate 303 can stably fix the sealing gasket 306, and the sealing gasket 306 can stably seal the pull rod 102.

[0042] In order to make the connection between the first clamping sleeve plate 301 and the second clamping sleeve plate 303 more closely, as shown in Figure 2 and Figure 6 As shown, the top of the outer wall of the side of the first clamping sleeve plate 301 close to the second clamping sleeve plate 303 is provided with a connecting groove 302 at both ends, and the top of the outer wall of the side of the second clamping sleeve plate 303 close to the first clamping sleeve plate 301 is fixedly provided with a plug-in plate 304 at both ends, the connecting groove 302 is movably connected to the adjacent plug-in plate 304, and the first clamping sleeve plate 301 and the second clamping sleeve plate 303 are closely connected through the connection between the plug-in plate 304 and the adjacent connecting groove 302, so that the lower sealing mechanism 3 can stably seal the pull rod 102.

[0043] The specific implementation scenario is: when installing the sealing structure, the two clamping blocks 204 are sleeved outside the inner walls of the two sealing sleeve plates 201, then the two sealing sleeve plates 201 are installed on the top of the fixed plate 101, so that the first fixing hole 202 can be aligned with the mounting hole 103, and at the same time, the two clamping blocks 204 can be sleeved outside the pull rod 102, and then the two sealing gaskets 306 are installed on the inner sides of the first clamping sleeve plate 301 and the second clamping sleeve plate 303, and then the fastening pin 308 is used to penetrate the second fixing hole 307 and threadedly connect with the inner wall of the bottom of the adjacent sealing gasket 306, so that the sealing gasket 306 remains stable inside the first clamping sleeve plate 301 and the second clamping sleeve plate 303;

[0044] Then the first clamping sleeve plate 301 and the second clamping sleeve plate 303 are installed on the bottom of the fixed plate 101, and at the same time, the two sealing gaskets 306 can be sleeved outside the bottom of the pull rod 102, and at the same time, the two plug-in plates 304 can be respectively plugged into the two connecting grooves 302, so that the first clamping sleeve plate 301 and the second clamping sleeve plate 303 are closely connected, and then the fastening bolt 305 is used to penetrate the inner walls of the first clamping sleeve plate 301 and the second clamping sleeve plate 303 and threadedly connect with the inner wall of the fixed plate 101, so that the lower sealing mechanism 3 can stably seal the outer side of the bottom of the pull rod 102;

[0045] Then the connecting bolt 203 is used to pass through the first fixing hole 202 and the adjacent mounting hole 103 and is screwed with the inner wall of the adjacent connecting hole 309, so that the upper sealing mechanism 2 and the lower sealing mechanism 3 can be tightly connected, and in turn the upper sealing mechanism 2 and the lower sealing mechanism 3 can stably seal the pull rod 102, and the embodiment specifically solves the problem that the sealing structure in the prior art is prone to loosening, which affects the sealing effect and service life.

[0046] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model belong to the scope of protection required by the utility model.

Claims

1. A drag link seal structure comprising a coal mill body (1) characterized by, Also include: The upper sealing mechanism (2) is arranged at the top of the coal mill body (1) outside, for sealing the upper half of the coal mill body (1); The lower sealing mechanism (3) is arranged at the bottom of the coal mill body (1) outside, for sealing the lower half of the coal mill body (1); The upper sealing mechanism (2) includes two sealing sleeve plates (201), and the inner side of the two sealing sleeve plates (201) movably sleeves a clamping block (204); The lower sealing mechanism (3) includes a first clamping sleeve plate (301) and a second clamping sleeve plate (303), and the inner side of the first clamping sleeve plate (301) and the second clamping sleeve plate (303) is provided with a sealing gasket (306).

2. The pull rod seal structure of claim 1, wherein: The fixed plate (101) movably inserts a pull rod (102) in the inner wall, and the inner wall of the fixed plate (101) located outside the pull rod (102) is equally spaced annularly provided with a plurality of mounting holes (103).

3. The pull rod seal structure of claim 2, wherein: The inner wall of the sealing sleeve plate (201) is equally spaced annularly provided with a plurality of first fixing holes (202), and the inner wall of the first fixing hole (202) is threadedly connected with the outer wall of the adjacent connecting bolt (203), and the bottom outer wall of the connecting bolt (203) is threadedly connected with the inner wall of the adjacent mounting hole (103).

4. The pull rod seal structure of claim 3, wherein: The inner wall of the first clamping sleeve plate (301) and the second clamping sleeve plate (303) is equally spaced annularly provided with a plurality of connecting holes (309) aligned with the mounting hole (103), and the inner wall of the connecting hole (309) is threadedly connected with the bottom outer wall of the adjacent connecting bolt (203).

5. The pull rod seal structure of claim 2, wherein: The two clamping blocks (204) are sleeved on the top outer wall of the pull rod (102), and the two sealing gaskets (306) are sleeved on the bottom outer side of the pull rod (102).

6. The pull rod seal structure of claim 1, wherein: The inner wall of the bottom of the first clamping sleeve plate (301) and the second clamping sleeve plate (303) is equally spaced annularly provided with a plurality of second fixing holes (307), and the inner wall of the second fixing hole (307) is threadedly inserted with a fastening pin (308), and the top of the fastening pin (308) is threadedly connected with the bottom inner wall of the adjacent sealing gasket (306).

7. The pull rod seal structure of claim 1, wherein: The first clamping sleeve plate (301) is provided with a connecting groove (302) at the top of the two ends of the outer wall of the side close to the second clamping sleeve plate (303), and the second clamping sleeve plate (303) is fixedly installed with a plug-in plate (304) at the top of the two ends of the outer wall of the side close to the first clamping sleeve plate (301), and the connecting groove (302) is movably connected with the adjacent plug-in plate (304).

8. The pull rod seal structure of claim 2, wherein: The inner diameter of the clamping block (204) is the same as the outer diameter of the top of the pull rod (102), and the inner diameter of the sealing gasket (306) is the same as the outer diameter of the bottom of the pull rod (102).

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