Feeding and discharging end sealing device suitable for rotary dryer

Abstract

The utility model discloses a feeding and discharging end sealing device suitable for a rotary dryer. The feeding and discharging end sealing device comprises a body roller, a first sealing part, a second sealing part and an elastic sealing medium. According to the sealing component, the labyrinth type closed space is formed through the two sealing parts, media such as gas cannot leak, and the sealing effect is greatly improved; the sealing mode is changed from the original direct contact sealing of the roller and the sealing medium to the contact sealing of the first sealing part and the elastic sealing medium, and the friction mode is changed from the original transverse friction to longitudinal friction, so that the service life of the sealing medium is greatly prolonged; the problem that an original roller is not concentric is solved, gap material leakage caused by rotation of the roller is also solved due to the change of a sealing mode, the elastic sealing medium is matched with the first sealing part to adaptively stretch out and draw back, direct contact and collision of the two sealing parts are avoided, and the service life of the sealing device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of dryer equipment, and in particular to a sealing device for the inlet and outlet ends of a rotary dryer. Background Technology

[0002] Rotary dryers are widely used due to their high thermal efficiency and significant energy-saving effects. However, some problems exist that require improvement: the internal pressure of the dryer differs from atmospheric pressure at the inlet and outlet ends, and the dryer drums cannot be perfectly concentric, resulting in poor sealing between the drums and the sealing device, leading to serious material leakage. This significantly reduces the dryer's effectiveness, while also causing resource waste and environmental pollution.

[0003] Therefore, it is necessary to design a sealing device suitable for the inlet and outlet ends of a rotary dryer to solve the above-mentioned technical problems. Utility Model Content

[0004] Purpose of the utility model: In order to solve the problems existing in the prior art, this utility model provides a sealing device for the inlet and outlet ends of a rotary dryer, which greatly improves the sealing effect and effectively extends the service life of the sealing medium.

[0005] Technical solution: To achieve the above objectives, the present invention can adopt the following technical solution: a sealing device for the inlet and outlet ends of a rotary dryer, comprising a main body drum and sealing components, wherein there are two sealing components, which are respectively located at two ends of the main body drum along the axial direction;

[0006] The sealing component includes a first sealing part, a second sealing part, and an elastic sealing medium; the first sealing part is a structure of multiple annular raised baffles fixed to the outer periphery of the main body roller; the second sealing part is a cover-type structure wrapped around the end of the main body roller, and the inner wall of the second sealing part extending axially is provided with multiple raised annular baffles; the multiple annular baffles axially divide the second sealing part into multiple annular intervals, and the elastic sealing medium fills the annular intervals, the number of annular intervals being the same as the number of annular raised baffles in the first sealing part;

[0007] In the sealed state, the annular protruding baffle structure of the first sealing part is inserted into the annular interval of the second sealing part and squeezes the elastic sealing medium to complete the sealing of the main body roller.

[0008] Furthermore, there are two sealing components, which are respectively located at the two ends of the main body roller in the axial direction.

[0009] Furthermore, the elastic sealing medium is made of one or more of the following materials: rubber, felt, and asbestos, which provides better sealing and elasticity.

[0010] Furthermore, the annular baffle is made of one of the following materials: cast iron, stainless steel, or alloy.

[0011] Furthermore, the annular protruding baffle of the first sealing part and the annular baffle of the second sealing part form an interlaced structure.

[0012] Furthermore, the compressed elastic sealing medium fills the gap between the first and second sealing parts, forming a labyrinthine sealed space where no gaseous medium can leak, effectively improving the sealing effect.

[0013] Furthermore, the protrusion height of the annular baffle of the second sealing part is such that it abuts against the outer wall of the main body roller.

[0014] Furthermore, the elastic sealing medium is fixedly connected to the second sealing part, which is a combined device, allowing for quick replacement of the elastic sealing medium by disassembling and assembling the second sealing part.

[0015] Beneficial effects: This utility model has the following advantages:

[0016] 1) The sealing component forms a labyrinthine sealed space through two sealing parts, preventing the leakage of gases and other media, thus greatly improving the sealing effect.

[0017] 2) The sealing method has been changed from the original direct contact between the roller and the sealing medium to the first sealing part contacting the elastic sealing medium. The friction method has been changed from the original transverse friction to longitudinal friction, which greatly improves the service life of the sealing medium.

[0018] 3) The problem of misalignment of the original rollers and the leakage caused by the gap due to the rotation of the rollers are also solved by the change of sealing method. The elastic sealing medium cooperates with the first sealing part to make adaptive expansion and contraction, avoiding direct contact and collision between the two sealing parts and improving the service life of the sealing device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the sealing device in Embodiment 1 of this utility model;

[0020] Figure 2 This is an exploded structural diagram of the sealing device according to Embodiment 1 of this utility model;

[0021] Figure 3 This is a cross-sectional internal structural diagram of the second sealing part and the elastic sealing medium of the sealing device in Embodiment 1 of this utility model;

[0022] Figure 4 This is a schematic diagram of the main structure of the sealing device in Embodiment 1 of this utility model. Detailed Implementation

[0023] Example 1

[0024] Please see Figure 1-4 As shown, this utility model discloses a sealing device for the inlet and outlet ends of a rotary dryer, including a main body drum 1 and sealing components. There are two sealing components, which are symmetrically arranged at the two ends of the main body drum 1 along the axial direction.

[0025] The sealing component includes a first sealing part 2, a second sealing part 4, and an elastic sealing medium 3; the first sealing part 2 is a structure of multiple annular raised baffles fixed on the outer periphery of the main body roller 1;

[0026] The second sealing part 4 is a cover-type structure that wraps around the end of the main body roller 1. The inner wall of the second sealing part 4 extending axially is provided with multiple protruding annular baffles 41, specifically as follows: Figure 3 As shown, the material is one of cast iron, stainless steel, or alloy. The protrusion height of the annular baffle 41 of the second sealing part 4 is such that it abuts against the outer wall of the main body roller 1.

[0027] Multiple annular baffles 41 axially divide the second sealing part 4 into multiple annular intervals. The elastic sealing medium 3 is made of one or more of the following materials: rubber, felt, and asbestos, providing better sealing and elasticity. The elastic sealing medium 3 fills the annular intervals, and the number of annular intervals is the same as the number of annular raised baffles in the first sealing part 2. The annular raised baffles of the first sealing part 2 and the annular baffles 41 of the second sealing part 4 form an interlaced structure.

[0028] In the sealed state, the annular protruding baffle structure of the first sealing part is inserted into the annular gap of the second sealing part and compresses the elastic sealing medium to complete the seal of the main body roller. The compressed elastic sealing medium fills the gap between the first and second sealing parts, forming a labyrinthine sealed space, preventing gaseous media from leaking and effectively improving the sealing effect.

[0029] The elastic sealing medium 3 is fixedly connected to the second sealing part 4. The second sealing part 4 is a combined device. During maintenance, the elastic sealing medium 3 can be quickly replaced by disassembling and assembling the second sealing part 4.

[0030] The working principle of this utility model is as follows:

[0031] The annular raised baffle structure of the first sealing part 2 and the annular baffle 41 of the second sealing part 4 form a labyrinthine sealed space, preventing gas and other media from leaking and greatly improving the sealing effect. The first sealing part 2 consists of several annular raised baffle structures. The sealing method has been improved from the original direct contact sealing between the main body roller 1 and the elastic sealing medium 3 to contact sealing between the first sealing part 2 and the elastic sealing medium 3. The friction method has been changed from the original transverse friction to longitudinal friction, which greatly improves the service life of the elastic sealing medium 3. The problem of misalignment of the original main body roller 1 and the gap leakage caused by the rotation of the main body roller 1 are also solved by the change in sealing method. The elastic sealing medium 3 cooperates with the first sealing part 2 to make adaptive expansion and contraction, avoiding direct contact and collision between the first sealing part 2 and the second sealing part 4, effectively improving the service life of the sealing device.

Claims

1. A sealing device for the inlet and outlet ends of a rotary dryer, characterized in that... It includes a main roller and two sealing components, which are respectively located at two ends of the main roller in the axial direction. The sealing component includes a first sealing part, a second sealing part, and an elastic sealing medium; the first sealing part is a structure of multiple annular raised baffles fixed to the outer periphery of the main body roller; the second sealing part is a cover-type structure wrapped around the end of the main body roller, and the inner wall of the second sealing part extending axially is provided with multiple raised annular baffles; the multiple annular baffles axially divide the second sealing part into multiple annular intervals, and the elastic sealing medium fills the annular intervals, the number of annular intervals being the same as the number of annular raised baffles in the first sealing part; In the sealed state, the annular protruding baffle structure of the first sealing part is inserted into the annular interval of the second sealing part and squeezes the elastic sealing medium to complete the sealing of the main body roller.

2. The sealing device for the inlet and outlet ends of a rotary dryer according to claim 1, characterized in that: The elastic sealing medium is made of one or more of the following materials: rubber, felt, and asbestos.

3. The sealing device for the inlet and outlet ends of a rotary dryer according to claim 1, characterized in that: The annular baffle is made of one of the following materials: cast iron, stainless steel, or alloy.

4. The inlet and outlet sealing device for a rotary dryer according to claim 1, characterized in that: The annular protruding baffle of the first sealing part and the annular baffle of the second sealing part form an interlaced structure.

5. The inlet and outlet sealing device for a rotary dryer according to claim 1, characterized in that: The compressed elastic sealing medium fills the gap between the first sealing part and the second sealing part.

6. The inlet and outlet sealing device for a rotary dryer according to claim 1, characterized in that: The protrusion height of the annular baffle of the second sealing part is such that it abuts against the outer wall of the main body roller.

7. The inlet and outlet sealing device for a rotary dryer according to claim 1, characterized in that: The elastic sealing medium is fixedly connected to the second sealing part, which is a combined device. The elastic sealing medium can be quickly replaced by disassembling and assembling the second sealing part.

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