Continuous disc dryer

Abstract

According to the technical scheme, the continuous disc type drying machine is characterized by comprising a shell and a drying disc, a discharging opening is formed in the bottom of the shell, the drying disc comprises a first disc, a round hole is formed in the first disc, a water baffle is arranged at the bottom of the shell, and a through hole is formed in the top of the water baffle; and a cavity is formed by the water baffle and the bottom plate of the shell. When water drops formed by condensation of steam and water drops formed by part of condensed water penetrate through a gap between the drying disc and the shell to fall into the bottom of the shell after the steam reaches the shell with lower temperature, the water baffle separates the water drops from dried materials, so that the water drops cannot be in contact with the materials in the cavity, and the drying efficiency is improved. Therefore, the materials in the cavity cannot regain moisture due to water drops, the drying efficiency of the drying machine is well improved, and the water baffle made of stainless steel plates has good corrosion resistance and can well adapt to the humid environment in the drying machine.

Description

Technical Field

[0001] The utility model relates to material transmission equipment, more specifically, it relates to a continuous disc dryer. Background Art

[0002] The continuous disc dryer is a conductive continuous drying equipment with the advantages of small footprint, simple structure and easy maintenance. It is widely used in chemical, pharmaceutical and other scenarios.

[0003] A continuous disc dryer usually includes a shell, a drying disc fixed inside the shell and a rotating shaft passing through the drying disc. The shell is provided with a feed inlet and a discharge outlet at the bottom of the shell, a support rod is fixed to the rotating shaft and a rake is installed on the support rod. When in use, the material falls onto the drying disc through the feed inlet, and the rotating shaft rotates and drives the rake to scrape the material on the drying disc through the support rod. A heating device is provided on the drying disc to heat the material and dehydrate it. The drying disc can be divided into a disc 1 with a larger outer diameter and a disc 2 with a smaller outer diameter. A drop opening with a diameter larger than the outer diameter of the rotating shaft is opened in the middle of the disc 1, and a gap is left between the disc 2 and the inner circumferential wall of the shell for the material to pass through. When the rotating shaft rotates and drives the rake to move, the rake on the disc 1 can scrape the material into the drop opening and fall on the disc 2 below. The rake on the disc 2 can push the material into the gap and fall on the disc 1 below. This cycle continues until the material falls to the bottom of the shell and the drying is completed.

[0004] However, when the drying plate is drying the material, the water vapor generated will rise to the top of the shell. Since the shell has no heating device, this part of the water vapor will condense and fall back to the bottom of the shell, causing the material to become damp again, making the dryer ineffective.

[0005] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a continuous disc dryer.

[0007] The above technical objectives of the present utility model are achieved through the following technical solutions: a continuous disc dryer, comprising a shell and several drying discs fixed to the shell, a discharge port being provided at the bottom of the shell, the drying disc comprising a disc 1 arranged near the bottom of the shell, a circular hole for passing the material through being provided in the middle of the disc 1, a water baffle being provided at the bottom of the shell for covering the top of the discharge port, the water baffle being in a frustum shape as a whole, a through hole being provided at the top of the water baffle being concentric with the circular hole, and a cavity being formed by the water baffle and the bottom plate of the shell for accommodating the material.

[0008] The utility model is further configured as follows: a water collecting tank located outside the cavity is further provided in the shell, and a water outlet pipe communicating with the water collecting tank passes through the bottom plate of the shell.

[0009] The utility model is further configured as follows: a bending portion is provided at the connection between the water baffle and the shell, and the water collecting trough is formed on the bending portion.

[0010] The utility model is further configured as follows: an annular sealing piece is fixed to one end of the water baffle facing away from the bottom of the shell body, and the annular sealing piece is detachably connected to the disc through bolts.

[0011] The utility model is further configured as follows: the bending portion and the water baffle are integrally formed, and the annular sealing piece is welded to the water baffle.

[0012] The utility model is further configured as follows: a gasket for filling the gap between the water retaining plate and the bottom plate of the shell is provided in the cavity.

[0013] The utility model is further configured as follows: the water retaining plate is made of stainless steel, and a side of the water retaining plate facing away from the cavity is coated with a hydrophobic layer.

[0014] In summary, the utility model has the following beneficial effects: after the material passes through a series of drying plate dehydration processes, it falls into the cavity through the circular holes and the through holes in turn. When the rising steam in the shell encounters the shell with a lower temperature, it condenses to form water droplets and falls. Some of the water droplets falling on the drying plate are reheated and evaporated, while other water droplets that pass through the gap between the drying plate and the shell and fall to the bottom of the shell are well blocked by the water baffle, so that the water droplets cannot contact the dried material, making it less likely that the dried material will regain moisture, thereby better ensuring the drying efficiency of the dryer. The diameter of the through hole is set larger than the diameter of the circular hole, so that when the material passes through the circular hole, it is not easy for the material to fall on the outer edge of the through hole, thereby better ensuring the collection rate of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a partial cross-sectional view of the utility model;

[0016] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0017] Figure 3 It is a structural schematic diagram of the annular sealing piece and the water retaining plate in the utility model.

[0018] In the figure: 1. Shell; 2. Discharge port; 3. Disc 1; 4. Circular hole; 5. Water baffle; 6. Through hole; 7. Water outlet pipe; 8. Bend; 9. Ring seal; 10. Gasket. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0020] Continuous disc dryers, such as Figure 1 As shown, it includes a shell 1 and several drying plates fixed on the shell 1. A discharge port 2 is provided at the bottom of the shell 1. The drying plate includes a disc 3 arranged near the bottom of the shell 1. A circular hole 4 for the material to pass through is provided in the middle of the disc 3. A water baffle 5 is provided at the bottom of the shell 1 for covering the top of the discharge port 2. The water baffle 5 is in a frustum shape as a whole. A through hole 6 concentric with the circular hole 4 is provided on the top of the water baffle 5. The diameter of the through hole 6 is larger than that of the circular hole 4. The water baffle 5 and the bottom plate of the shell 1 form a cavity for accommodating the material. After the material passes through a series of drying plate dehydration processes, it falls into the drying plate through the circular hole 4 and the through hole 6 in turn. In the cavity, when the steam rising in the shell 1 encounters the shell 1 with a lower temperature, it condenses to form water droplets and falls. Some water droplets falling on the drying plate are reheated and evaporated, while other water droplets passing through the gap between the drying plate and the shell 1 and falling on the bottom of the shell 1 are well blocked by the water baffle 5, so that the water droplets cannot come into contact with the dried material, making it less likely that the dried material will regain moisture, thereby better ensuring the drying efficiency of the dryer. The diameter of the through hole 6 is set larger than the diameter of the circular hole 4, so that when the material passes through the circular hole 4, it is not easy for the material to fall on the outer edge of the through hole 6, thereby better ensuring the collection rate of the material.

[0021] like Figures 1 to 3As shown, the shell 1 is also provided with a water collecting tank located outside the cavity, and the bottom plate of the shell 1 passes through a water outlet pipe 7 connected to the water collecting tank. The setting of the water collecting tank allows the condensed water droplets falling on the bottom of the shell 1 to be better collected in the water collecting tank and then discharged through the water outlet pipe 7, which can effectively reduce the humidity inside the shell 1, thereby better ensuring the drying efficiency of the dryer and better reducing the energy consumption of the dryer. A bending portion 8 is provided at the connection between the water baffle 5 and the shell 1, and the water collecting tank is formed on the bending portion 8. The bending portion 8 and the water baffle 5 are integrally formed. This setting allows the bending portion 8 and the water baffle 5 to be connected. The integrity is good, so that there is no connection between the bent portion 8 and the water baffle 5, because there is no gap that can be penetrated by water, so that the water baffle 5 can better separate the condensed water from the dried material, further ensuring the dryness of the material in the cavity, and the water baffle 5 is fixed with an annular sealing piece 9 on the end facing away from the bottom of the shell 1. The annular sealing piece 9 is detachably connected to the disc 3 by bolts, and the annular sealing piece 9 is welded to the water baffle 5 and fixed by bolts, so that the water baffle 5 can be better fixed in the shell 1. During the operation of the dryer, the vibration generated is not easy to cause the circular hole 4 to be separated from the through hole 4. The hole 6 is eccentric, so as to better ensure the collection rate of the material. At the same time, the water baffle 5, which is limited by the bolts on the disc 1 3, can be replaced and maintained by removing the bolts when there is a problem with the water baffle 5, making the maintenance of the water baffle 5 relatively simple. The annular sealing piece 9 is welded to the water baffle 5, making the processing process relatively simple. A gasket 10 for filling the gap between the water baffle 5 and the bottom plate of the shell 1 is provided in the cavity. The gasket 10 will contact with the material, so that the material cannot be embedded in the gap between the water baffle 5 and the bottom of the shell 1 through the gasket 10, thereby making Materials are not easily retained in the cavity. In addition, the gasket 10 further improves the sealing performance of the water baffle 5. The water baffle 5 is made of stainless steel. The side of the water baffle 5 facing away from the cavity is coated with a hydrophobic layer. The good corrosion resistance of stainless steel enables the water baffle 5 to better adapt to the relatively humid environment in the dryer. The hydrophobic layer is formed by coating the water baffle 5 with silicone. The good hydrophobicity of silicone makes it difficult for water droplets to adhere to the outside of the water baffle 5, and the water droplets fall into the water collection tank under the action of gravity, and are finally discharged through the outlet pipe 7, thereby effectively reducing the humidity in the dryer.

[0022] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. Continuous disc dryer, characterized by: The invention comprises a shell (1) and a plurality of drying plates fixed on the shell (1), wherein a discharge port (2) is provided at the bottom of the shell (1), the drying plates comprise a disc 1 (3) arranged near the bottom of the shell (1), a circular hole (4) for passing the material is provided in the middle of the disc 1 (3), a water baffle (5) for covering the upper portion of the discharge port (2) is provided at the bottom of the shell (1), the water baffle (5) being in a cone shape as a whole, a through hole (6) concentric with the circular hole (4) is provided at the top of the water baffle (5), and a cavity for accommodating the material is formed by the water baffle (5) and the bottom plate of the shell (1).

2. The continuous disc dryer according to claim 1, characterized in that: The shell (1) is further provided with a water collecting tank located outside the cavity, and a water outlet pipe (7) connected to the water collecting tank passes through the bottom plate of the shell (1).

3. The continuous disc dryer according to claim 2, characterized in that: A bending portion (8) is provided at the connection between the water baffle (5) and the shell (1), and the water collecting trough is formed on the bending portion (8).

4. The continuous disc dryer according to claim 3, characterized in that: An annular sealing piece (9) is fixed to one end of the water baffle (5) facing away from the bottom of the shell (1), and the annular sealing piece (9) is detachably connected to the disc 1 (3) via bolts.

5. The continuous disc dryer according to claim 4, characterized in that: The bent portion (8) and the water baffle (5) are integrally formed, and the annular sealing piece (9) is welded to the water baffle (5).

6. The continuous disc dryer according to claim 5, characterized in that: A gasket (10) is provided in the cavity for filling the gap between the water retaining plate (5) and the bottom plate of the housing (1).

7. The continuous disc dryer according to claim 6, characterized in that: The water baffle (5) is made of stainless steel, and a side of the water baffle (5) facing away from the cavity is coated with a hydrophobic layer.

Images