Sealing device for feeding hole of drying machine

Abstract

The utility model relates to a sealing device for a feeding hole of a drying machine. The sealing device comprises a barrel body, an end cover and an elastic sealing ring, wherein the cylinder body is sleeved on a sealing cylinder of the screw conveyer, and one end of the cylinder body close to a feeding hole of the dryer is connected with the dryer; an annular gap is formed between the inner wall of the cylinder body and the outer wall of the sealing cylinder; an annular limiting part is arranged on the inner wall of the cylinder body; the end cover is annularly arranged and fixed to the end, away from the dryer, of the barrel. The multiple elastic sealing rings are arranged between the end cover and the limiting parts and / or between every two adjacent limiting parts so that sealing can be formed between the inner wall of the cylinder body and the outer wall of the sealing cylinder. According to the utility model, a plurality of circles of elastic sealing rings are wound in the gap between the barrel body and the sealing barrel, so that the sealing is effectively formed between the sealing barrel of the spiral conveyer and the feeding hole of the dryer, wet coal slime is prevented from being extruded from the joint, and the environmental pollution in the coal slime drying process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal processing technical field especially relates to a drying -machine feed inlet sealing device. BACKGROUND

[0002] In the coal processing industry, the drum drying treatment of coal slime is a key link, in the prior art, the coal slime drum drying system at least includes a feed screw conveyor and a dryer. Among them, the feed screw conveyor is used for conveying coal slime material to the dryer for drying, and at least includes a feed screw cylinder and a sealing cylinder. The feed screw cylinder is provided with a feed screw for conveying coal slime material, and the outlet end of the feed screw cylinder is connected with the feed inlet of the dryer. The sealing cylinder is sleeved on the outlet end of the feed screw cylinder, one end of which is connected with the cylinder wall of the feed screw cylinder, and the other end is connected with the dryer.

[0003] In the prior art, when the coal slime drum drying system runs for drum drying treatment, the sealing cylinder and the dryer will produce relative jumping, at the same time, the sealing cylinder and the feed inlet of the dryer will expand and contract due to the steam generated in the dryer, which leads to unstable sealing performance between the sealing cylinder and the dryer, and further causes wet coal slime to squeeze out from between the feed inlet of the dryer and the feed screw sealing cylinder, which not only pollutes the site environment, but also increases the production cost and maintenance difficulty. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the above technical problems, and provides a drying -machine feed inlet sealing device.

[0005] To achieve the above object, the utility model adopts the technical scheme of:

[0006] A drying -machine feed inlet sealing device is arranged between the screw conveyor and the feed inlet of the dryer, the discharge end of the screw conveyor is sleeved with a sealing cylinder, which is connected with the feed inlet of the dryer, and the sealing device comprises:

[0007] A cylinder body is sleeved on the sealing cylinder of the screw conveyor, one end of which close to the feed inlet of the dryer is connected with the dryer; an annular gap is formed between the inner wall of the cylinder body and the outer wall of the sealing cylinder; at least one annular limiting part is arranged on the inner wall of the cylinder body;

[0008] An end cover is arranged in an annular shape and fixed to one end of the cylinder body away from the dryer;

[0009] The elastic sealing ring comprises a plurality of elastic sealing rings arranged between the end cover and the limiting part and / or between two adjacent limiting parts, so as to form a seal between the inner wall of the cylinder body and the outer wall of the sealing cylinder.

[0010] In some embodiments of the utility model, the elastic sealing ring is a hollow structure.

[0011] In some embodiments of the utility model, the cross section of the elastic sealing ring is hollow circular, elliptical, square or rectangular.

[0012] In some embodiments of the utility model, the end cover is connected with the annular fixing part through bolts.

[0013] In some embodiments of the utility model, the cylinder and the annular fixing part are integrated.

[0014] In some embodiments of the utility model, the end cover is composed of at least two arc-shaped parts.

[0015] In some embodiments of the utility model, the end face of the end cover close to the outer wall of the sealing cylinder is spaced apart from the outer wall of the sealing cylinder.

[0016] In some embodiments of the utility model, the elastic sealing ring is made of fluorine rubber material.

[0017] In some embodiments of the utility model, the elastic sealing ring includes three.

[0018] In some embodiments of the utility model, the cylinder and the sealing cylinder are coaxially arranged.

[0019] The utility model has the advantages of:

[0020] The utility model solves the technical problem that wet coal slime is squeezed out from the connection between the dryer and the sealing cylinder of the screw conveyor due to thermal expansion and contraction and relative jumping of the dryer and the sealing cylinder of the screw conveyor during the drying process of the coal slime, effectively forms a seal between the sealing cylinder of the screw conveyor and the feed inlet of the dryer by winding multiple elastic sealing rings in the gap between the cylinder and the sealing cylinder, prevents wet coal slime from being squeezed out from the connection, and reduces environmental pollution during the drying process of the coal slime. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the utility model will be described in detail below with reference to the drawings, and other drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0022] Figure 1 It is a structure schematic view of the dryer feed inlet sealing device;

[0023] Figure 2 It is Figure 1 It is an enlarged structure schematic view of A part in the middle;

[0024] Figure 3 It is a structure schematic view of the end cover;

[0025] Figure 4A schematic view of the position relationship between the sealing device and the dryer and the sealing cylinder;

[0026] In the drawings, reference numerals:

[0027] 1, cylinder body; 11, annular limiting part; 12, fixed part;

[0028] 2, end cover; 21, arc-shaped part;

[0029] 3, elastic sealing ring;

[0030] 4, feeding screw cylinder;

[0031] 5, sealing cylinder;

[0032] 6, dryer. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application. Based on the examples provided in the present application, all other examples obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0034] Obviously, the drawings described below are only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can also be applied to other similar scenarios without creative labor on the basis of these drawings.

[0035] The terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0036] Unless otherwise defined, the technical terms or scientific terms involved in the present application should be understood as the usual meaning by those of ordinary skill in the art to which the present application belongs. The "one", "a", "an" and similar words involved in the present application do not represent quantity limitation, which can represent singular or plural. The terms "include", "contain", "have" and any variations thereof involved in the present application are intended to cover non-exclusive inclusion.

[0037] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can pass through the indirect connection of intermediate medium, can be two element internal communication. For ordinary skilled in the art, the above-mentioned term can be understood in the specific meaning in the utility model according to specific circumstances.

[0038] The technical scheme of the utility model is described in detail below in combination with specific embodiments and the drawings of the specification.

[0039] In order to better explain the scheme of the utility model, first, the structure of the existing coal slime roller drying system is described.

[0040] In the prior art, the coal slime roller drying system at least includes feed screw conveyor 4 and dryer 6. As shown in the accompanying drawings, feed screw conveyor 4 is used to transport coal slime material to dryer 6 for drying, including feed screw cylinder 4 and sealing cylinder 5. Among them, feed screw cylinder 4 is provided with a feed screw to convey coal slime material, and the outlet end of feed screw cylinder 4 extends to the inside of dryer 6 through the feed port of dryer 6; the sealing cylinder 5 is sleeved on the outlet end of feed screw cylinder 4, one end of which is connected with the cylinder wall of feed screw cylinder 4, and the other end is connected with the feed port of dryer 6. Figure 4 As shown in the accompanying drawings, in the prior art, the coal slime roller drying system at least includes feed screw conveyor 4 and dryer 6. As shown in the accompanying drawings, feed screw conveyor 4 is used to transport coal slime material to dryer 6 for drying, including feed screw cylinder 4 and sealing cylinder 5. Among them, feed screw cylinder 4 is provided with a feed screw to convey coal slime material, and the outlet end of feed screw cylinder 4 extends to the inside of dryer 6 through the feed port of dryer 6; the sealing cylinder 5 is sleeved on the outlet end of feed screw cylinder 4, one end of which is connected with the cylinder wall of feed screw cylinder 4, and the other end is connected with the feed port of dryer 6.

[0041] Figure 1 As shown in the accompanying drawings, in the prior art, the coal slime roller drying system at least includes feed screw conveyor 4 and dryer 6. As shown in the accompanying drawings, feed screw conveyor 4 is used to transport coal slime material to dryer 6 for drying, including feed screw cylinder 4 and sealing cylinder 5. Among them, feed screw cylinder 4 is provided with a feed screw to convey coal slime material, and the outlet end of feed screw cylinder 4 extends to the inside of dryer 6 through the feed port of dryer 6; the sealing cylinder 5 is sleeved on the outlet end of feed screw cylinder 4, one end of which is connected with the cylinder wall of feed screw cylinder 4, and the other end is connected with the feed port of dryer 6. Figure 4 As shown in the accompanying drawings, in the utility model a sealing device for the feed port of dryer 6, one illustrative embodiment of the sealing device includes cylinder body 1, end cover 2 and elastic sealing ring 3.

[0042] Among them, cylinder body 1 is sleeved on the outside of sealing cylinder 5 in screw conveyor 4, and the diameter of cylinder body 1 is greater than the diameter of the feed port of dryer 6, and the end close to the feed port of dryer 6 is fixedly connected with the machine wall around the feed port of dryer 6. The diameter of cylinder body 1 is greater than the diameter of sealing cylinder 5, and an annular gap is formed between the inner wall of cylinder body 1 and the outer wall of sealing cylinder 5. The inner wall of cylinder body 1 is provided with annular limiting part 11 protruding from the inner wall of cylinder body 1.

[0043] End cover 2 is annularly arranged, which is fixed to one end of cylinder body 1 away from dryer 6, so as to at least partially seal the annular gap between the inner wall of cylinder body 1 and the outer wall of sealing cylinder 5.

[0044] ​The elastic sealing ring 3 is made of fluorine rubber material, specifically, an elastic packing ring made of PTFE (polytetrafluoroethylene) material. In the embodiment, the elastic sealing ring 3 made of fluorine rubber material has high temperature resistance and corrosion resistance, and is suitable for high temperature and corrosive environment, which is beneficial to improve the durability of the sealing device, and the elasticity of the elastic sealing ring 3 can also meet the requirement of the relative jump tolerance between the cylinder body 1 and the sealing cylinder 5.

[0045] When the annular limiting part 11 is provided with only one, it is arranged in a spaced manner with the end cover 2, and a rectangular groove is formed between the annular limiting part 11 and the end cover 2.

[0046] The elastic sealing ring 3 includes a plurality of elastic sealing rings 3 arranged in the rectangular groove between the end cover 2 and the annular limiting part 11, and the elastic sealing rings 3 at both ends are in contact with the end cover 2 and the annular limiting part 11 respectively, so as to be limited by the end cover 2 and the annular limiting part 11 respectively, and the plurality of elastic sealing rings 3 form a seal between the inner wall of the cylinder body 1 and the outer wall of the sealing cylinder 5.

[0047] When the annular limiting part 11 is provided with at least two in a spaced manner, the annular limiting part 11 close to the end cover 2 and the end cover 2, and the adjacent two annular limiting parts 11 form a rectangular groove. It should be noted that when the annular limiting part 11 is provided with more than two in a spaced manner, the distance between the adjacent annular limiting parts 11 can be the same or different.

[0048] The elastic sealing ring 3 includes a plurality of elastic sealing rings 3 arranged in the rectangular groove, so as to form a seal between the inner wall of the cylinder body 1 and the outer wall of the sealing cylinder 5.

[0049] The position of the elastic sealing ring 3 and the number of the elastic sealing rings 3 in each rectangular groove can be selected according to the size and jump tolerance of the sealing cylinder 5 and the feed inlet of the dryer 6, and in the embodiment, three elastic sealing rings 3 are arranged in each rectangular groove.

[0050] The technical scheme solves the technical problem that wet coal slime is squeezed out from the connection between the dryer 6 and the sealing cylinder 5 of the screw conveyor 4 due to thermal expansion and contraction and relative jump of the sealing cylinder 5 of the dryer 6 and the screw conveyor 4 in the coal slime drying process, and by winding a plurality of elastic sealing rings 3 in the gap between the cylinder body 1 and the sealing cylinder 5, a seal is effectively formed between the sealing cylinder 5 of the screw conveyor 4 and the feed inlet of the dryer 6, so as to prevent wet coal slime from being squeezed out from the connection, and reduce environmental pollution in the coal slime drying process.

[0051] In order to enhance the elasticity of the elastic sealing ring 3, in some embodiments of the utility model, as shown in the accompanying drawings, Figure 3As shown in the drawings, the elastic sealing ring 3 is a hollow structure. Specifically, the cross-sectional shape of the elastic sealing ring 3 is a hollow circle, an ellipse, a square or a rectangle. The hollow elastic sealing ring 3 can better meet the relative jump tolerance requirement of the drying machine 6 and the sealing cylinder 5, help to improve the sealing performance, and on the other hand, can also reduce the overall weight of the sealing device and reduce the material cost.

[0052] In order to realize the connection of the end cover 2 and the cylinder body 1, some embodiments of the utility model, such as the drawings Figure 1 - the drawings Figure 2 As shown in the drawings, the end of the cylinder body 1 away from the drying machine 6 is provided with an annular fixing part 12, and the end cover 2 is connected with the annular fixing part 12 through screws.

[0053] In order to improve the overall strength of the sealing device, some embodiments of the utility model, such as the drawings Figure 1 - the drawings Figure 2 As shown in the drawings, the cylinder body 1 and the annular fixing part 12 are an integral structure.

[0054] In order to improve the flexibility of the end cover 2 disassembly, some embodiments of the utility model, such as the drawings Figure 3 As shown in the drawings, the end cover 2 is spliced by at least two arc-shaped parts 21, and the adjacent arc-shaped parts 21 are processed with a cut.

[0055] In order to reduce the friction and wear between the end cover 2 and the outer wall of the sealing cylinder 5 and prolong the service life of the sealing device, some embodiments of the utility model, the end face of the end cover 2 close to the outer wall of the sealing cylinder 5 is spaced apart from the outer wall of the sealing cylinder 5.

[0056] In order to ensure the balance of the sealing device installation, further reduce the wear of the sealing device, some embodiments of the utility model, the cylinder body 1 and the sealing cylinder 5 are coaxially arranged.

[0057] Finally, it should be explained that: in the description, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to.

[0058] The above embodiments are only used to illustrate the technical scheme of the utility model and not to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the utility model can be modified or some technical features can be replaced; without departing from the spirit of the technical scheme of the utility model, they should be covered in the technical scheme of the utility model claimed in the utility model.

Claims

1. A sealing device for the feed inlet of a dryer, characterized in that, The screw conveyor is positioned between the screw conveyor and the dryer, with the discharge end of the screw conveyor connected to the feed inlet of the dryer. A sealing cylinder is fitted at the connection between the screw conveyor and the dryer. The sealing device includes: A cylindrical body is fitted onto the sealing cylinder of the screw conveyor, with one end of the cylindrical body near the feed inlet of the dryer connected to the dryer; an annular gap is formed between the inner wall of the cylindrical body and the outer wall of the sealing cylinder; an annular limiting part is provided on the inner wall of the cylindrical body; An end cap, which is annularly arranged and fixed to the end of the cylinder away from the dryer; The elastic sealing ring includes multiple rings arranged between the end cap and the annular limiting portion and / or between two adjacent annular limiting portions to form a seal between the inner wall of the cylinder and the outer wall of the sealing cylinder.

2. The drying machine inlet sealing device according to claim 1, characterized in that, The elastic sealing ring has a hollow structure.

3. The drying machine inlet sealing device according to claim 1, characterized in that, The cross-sectional shape of the elastic sealing ring is a hollow circle, ellipse, square, or rectangle.

4. The drying machine inlet sealing device according to claim 1, characterized in that, An annular fixing part is provided at the end of the cylinder away from the dryer, and the end cover is connected to the annular fixing part by bolts.

5. The drying machine inlet sealing device according to claim 4, characterized in that, The cylindrical body and the annular fixing part are an integral structure.

6. The dryer inlet sealing device according to claim 1, 4, or 5, characterized in that, The end cap is composed of at least two arc-shaped portions joined together.

7. The drying machine inlet sealing device according to claim 1, characterized in that, The end face of the end cap near the outer wall of the sealing cylinder is spaced apart from the outer wall of the sealing cylinder.

8. The drying machine inlet sealing device according to claim 1, characterized in that, The elastic sealing ring comprises three.

9. The dryer inlet sealing device according to claim 1 or 8, characterized in that, The elastic sealing ring is made of fluororubber material.

10. The drying machine inlet sealing device according to claim 1, characterized in that, The cylinder body and the sealing cylinder are coaxially arranged.

Images