Water filter structure of a rake type vacuum drying device

Abstract

This utility model belongs to the technical field of exhaust gas treatment equipment, specifically relating to a water filter structure of a rake-type vacuum drying device. The water filter structure of a rake-type vacuum drying device includes a water filter cylinder and an S-shaped pipe, one end of which is connected to the bottom of the water filter cylinder. The water filter cylinder includes an upper cylinder and a lower cylinder connected vertically, with the upper and lower cylinders communicating with each other. A receiving hopper is provided inside the lower cylinder, and a liquid guide pipe is provided at the bottom of the receiving hopper, penetrating the lower cylinder. An annular air passage is provided between the receiving hopper and the inner wall of the lower cylinder. A plurality of spray blades are arranged in an array inside the upper cylinder, with spray nozzles above the spray blades, and an exhaust port is provided at the top of the upper cylinder.

Description

Technical Field

[0001] This utility model belongs to the technical field of exhaust gas treatment equipment, specifically relating to a water filter structure of a rake-type vacuum drying device. Background Technology

[0002] The rake-type vacuum dryer is an intermittent conductive heating drying device. Its key feature is its ability to effectively dry heat-sensitive, easily oxidized, explosive, pasty, and viscous materials under low-temperature, low-oxygen, or oxygen-deficient conditions. This equipment has broad application prospects in the chemical, pharmaceutical, food, and dye industries.

[0003] During the routine operation of a rake vacuum dryer, the exhaust gas typically does not carry large amounts of powder from the dried material. However, the risk of powder entering the exhaust gas system still exists, necessitating the installation of appropriate collection devices. Failure to effectively capture powder in the exhaust gas can lead to blockages in the system over time. Furthermore, powder entrained in the exhaust gas can pollute the environment, especially when processing materials containing hazardous components. To further improve the overall performance of the equipment while meeting environmental requirements, designing a highly efficient water filtration structure is crucial. Introducing a water filtration structure not only effectively intercepts residual powder in the exhaust gas but also reduces its temperature to some extent, thereby lessening the burden on subsequent processing equipment. This improvement not only extends the equipment's lifespan but also enhances the safety and stability of the production process, providing strong support for the sustainable development of related industries.

[0004] To effectively capture suspended particles in exhaust gases, current spray tower systems commonly employ direct spraying technology. However, this method causes tiny droplets containing solid particles to move with the flow of subsequent spray liquid, with a large number of droplets adhering to the inner wall of the scrubbing tower, making cleaning difficult. These adhering solid particles gradually accumulate, forming a stubborn layer of dirt. Over time, this not only reduces the efficiency of the spray tower but may also damage the structural integrity of the equipment. To address this issue, improved design can consider optimizing the spraying method, such as adjusting the nozzle angle or adding flow guiding devices to reduce the contact area between droplets and the inner wall. Simultaneously, selecting materials with anti-adhesion properties as the inner wall coating can also effectively alleviate dirt accumulation. Such improvements can significantly enhance the operational stability of the equipment and reduce maintenance costs, providing a more efficient solution for practical applications.

[0005] To address the aforementioned problems, this invention aims to provide a water filter structure for a rake-type vacuum drying device. Utility Model Content

[0006] The purpose of this invention is to provide a water filter structure for a rake-type vacuum drying device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A water filter structure for a rake-type vacuum drying device includes a water filter cylinder and an S-shaped pipe, one end of which is connected to the bottom of the water filter cylinder. The water filter cylinder includes an upper cylinder and a lower cylinder connected vertically, with the upper and lower cylinders communicating with each other. A receiving hopper is provided inside the lower cylinder, and a liquid guide pipe is provided at the bottom of the receiving hopper, the liquid guide pipe penetrating the lower cylinder. An annular air passage is provided between the receiving hopper and the inner wall of the lower cylinder. A plurality of spray blades are arranged in an array inside the upper cylinder, and a spray nozzle is provided above the plurality of spray blades. An exhaust port is provided at the top of the upper cylinder.

[0009] Preferably, the inner diameter of the lower cylinder is larger than the inner diameter of the upper cylinder.

[0010] Preferably, the opening of the receiving hopper is provided with a flared ring.

[0011] Preferably, an annular liquid guiding plate is provided at the lower edge of the inner wall of the upper cylinder.

[0012] Preferably, the minimum inner diameter of the annular liquid guide plate is smaller than the inner diameter of the flared ring or the inner diameter of the receiving hopper.

[0013] Preferably, the spray blades are suspended vertically downward inside the upper cylinder.

[0014] Preferably, the lowest point of the S-shaped pipe is provided with a pre-installed drain port.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) The water filter structure of the rake-type vacuum drying device provided by this utility model has several spray blades arranged in an array inside the upper cylinder. These spray blades are suspended vertically downwards. The spray blades effectively divide the internal space of the upper cylinder. The spray blades can block the movement trajectory of small droplets, causing the small droplets to flow down along the spray blades or fall directly through the gaps between the spray blades. At the same time, the exhaust gas containing solid powder is also separated by the spray blades, so that the exhaust gas can fully contact the spray liquid to realize the adsorption and elution process. The design of the spray blades can also enhance the dispersion effect of the liquid, making the spray liquid more evenly distributed inside the upper cylinder. Through this structure, not only is the adsorption and elution efficiency improved, but the residual amount of solid particles in the exhaust gas can also be effectively reduced.

[0017] (2) The water filter structure of the rake-type vacuum drying device provided by this utility model significantly reduces the risk of water filter cartridge spray liquid overflow through the S-shaped pipe design; the spray liquid overflowing from the water filter cartridge enters the S-shaped pipe, and a pre-set drain port is provided at the lowest point of the S-shaped pipe to discharge the liquid, which can ensure that the inside of the S-shaped pipe is unobstructed.

[0018] (3) The water filter structure of the rake-type vacuum drying device provided by this utility model has an inner diameter of the upper cylinder that is smaller than the inner diameter of the lower receiving hopper, so as to ensure that the receiving hopper can fully receive the spray liquid; and a liquid guide pipe is connected at an appropriate position in the receiving hopper to achieve effective discharge of the liquid in the receiving hopper. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model connected to a rake-type vacuum dryer;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the water filter cartridge of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the spray blade of this utility model;

[0023] In the diagram: 1. Water filter cartridge; 2. S-shaped pipe; 3. Rake-type vacuum dryer; 4. Pre-set drain port; 5. Upper cylinder; 6. Lower cylinder; 7. Receiving hopper; 8. Liquid guide pipe; 9. Annular air passage; 10. Spray blade; 11. Liquid spray nozzle; 12. Annular liquid guide plate; 13. Flaring ring; 14. Exhaust port. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This study proposes a water filter structure for a rake-type vacuum dryer, consisting of a water filter cartridge 1 and an S-shaped pipe 2. One end of the S-shaped pipe 2 is connected to the rake-type vacuum dryer 3, and the other end is connected to the bottom of the water filter cartridge 1. By setting the S-shaped pipe 2 between the water filter cartridge 1 and the rake-type vacuum dryer 3, the risk of spray liquid overflow is effectively reduced. If spray liquid overflows inside the water filter cartridge 1, the liquid will flow into the S-shaped pipe 2. The liquid can be discharged through the pre-installed drain port 4 at the lowest point of the S-shaped pipe 2.

[0026] The water filter cartridge 1 includes an upper cylinder 5 and a lower cylinder 6 connected vertically. The internal chambers of the upper cylinder 5 and the lower cylinder 6 are interconnected, and the inner diameter of the lower cylinder 6 is larger than that of the upper cylinder 5. A receiving hopper 7 is located inside the lower cylinder 6, and a liquid guide pipe 8 is located at the bottom of the receiving hopper 7, penetrating the lower cylinder 6. Liquid in the receiving hopper 7 can be discharged through the liquid guide pipe 8. An annular air passage 9 is provided between the receiving hopper 7 and the inner wall of the lower cylinder 6. Exhaust gas introduced from the S-shaped pipe 2 enters the upper cylinder 5 through the annular air passage 9. Several spray blades 10 are arranged in an array inside the upper cylinder 5, suspended vertically downwards. A spray nozzle 11 is located at the top, through which small droplets are sprayed into the upper cylinder 6. To ensure adequate intake of the spray liquid, an annular liquid guide plate 12 is provided at the lower edge of the inner wall of the upper cylinder 5, and a flared ring 13 is provided at the opening of the receiving hopper 7. The minimum inner diameter of the annular liquid guide plate 12 is smaller than the maximum inner diameter of the flared ring 13. The spray liquid flowing down from inside the upper cylinder 5 is completely collected by the receiving hopper 7. An exhaust port 14 is provided at the top of the upper cylinder 5, and the exhaust port 14 is connected to a negative pressure device, which provides power for the gas flow within the device.

[0027] During operation, the exhaust gas is introduced into the water filter cartridge 1 through the S-shaped pipe 2. The exhaust gas then enters the upper cartridge 5 through the annular air passage 9 of the lower cartridge 6. Inside the upper cartridge 5, several spray blades 10 are arranged in an array, suspended vertically downwards. The spray blades 10 effectively divide the internal space of the upper cartridge 5; they also block the trajectory of small droplets, causing them to flow downwards along the direction of the blades. Simultaneously, the exhaust gas containing solid powder is also separated by the spray blades 10, allowing the exhaust gas to fully contact the spray liquid, thus achieving the adsorption and elution process. The eluted spray liquid enters the receiving hopper 7, and the liquid in the receiving hopper 7 can be discharged through the liquid guide pipe 8.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water filter structure for a rake-type vacuum drying device, characterized in that: The device includes a water filter cartridge and an S-shaped pipe, one end of which is connected to the bottom of the water filter cartridge. The water filter cartridge includes an upper cylinder and a lower cylinder connected vertically, with the upper and lower cylinders communicating with each other. The lower cylinder has a receiving hopper inside, and a liquid guide pipe is located at the bottom of the receiving hopper, penetrating the lower cylinder. An annular air passage is provided between the receiving hopper and the inner wall of the lower cylinder. The upper cylinder has several spray blades arranged in an array inside, with spray nozzles above the spray blades, and an exhaust port at the top of the upper cylinder.

2. The water filter structure of the rake-type vacuum drying device according to claim 1, characterized in that: The inner diameter of the lower cylinder is larger than the inner diameter of the upper cylinder.

3. The water filter structure of the rake-type vacuum drying device according to claim 1, characterized in that: The opening of the receiving bucket is provided with a flared ring.

4. The water filter structure of a rake-type vacuum drying device according to claim 1 or 3, characterized in that: An annular liquid guiding plate is provided at the lower edge of the inner wall of the upper cylinder.

5. The water filter structure of the rake-type vacuum drying device according to claim 4, characterized in that: The minimum inner diameter of the annular liquid guide plate is smaller than the inner diameter of the flared ring or the inner diameter of the receiving hopper.

6. The water filter structure of the rake-type vacuum drying device according to claim 1, characterized in that: The spray blades are suspended vertically downward inside the upper cylinder.

7. The water filter structure of the rake-type vacuum drying device according to claim 1, characterized in that: The lowest point of the S-shaped pipe is provided with a pre-installed drain port.

Images