A moisture drainage pipe for preventing material loss
By setting up a first and second pipe with an acute angle in the drainage pipe, combined with a transparent cover and a cleaning window, the problem of fine material loss is solved, and the material is effectively prevented and the equipment operates efficiently.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI CONCH ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-07
AI Technical Summary
During the production of cement denitrification catalysts, fine materials are easily carried into the exhaust pipe by negative pressure airflow, resulting in material loss, increased production costs, and potential environmental pollution.
A desiccation pipe is designed to achieve gas-solid separation by setting up a first pipe and a second pipe with an acute angle bend. Combined with a transparent cover and a cleaning window, it can effectively prevent material loss and facilitate cleaning.
It effectively reduces material loss, ensures continuous and stable production and economy, and improves equipment maintenance efficiency.
Smart Images
Figure CN224469917U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cement denitrification catalyst production technology, and specifically relates to a dehumidification pipe to prevent material loss. Background Technology
[0002] In the production process of cement denitrification catalysts, drying the raw materials is a crucial step. Currently, negative pressure drying devices are commonly used. These devices create a negative pressure environment by extracting air from the equipment, allowing the moisture evaporated from the materials to be discharged with the airflow, thus achieving the drying purpose. However, in actual production, it has been found that when drying small or lightweight materials, these fine particles are easily moved by the strong negative pressure airflow and are ultimately drawn into the exhaust pipe along with the moisture. This not only results in the direct loss of valuable materials and increases production costs, but may also lead to blockages or increased burden on subsequent waste gas treatment systems, and even pose a potential environmental pollution hazard.
[0003] Existing desiccation pipes are typically simple, straight-through structures with a single function, serving only as a channel for gas and water molecules. Furthermore, using gas-solid separation devices not only affects the gas emission rate but also increases equipment costs. Therefore, there is an urgent need for an improved desiccation pipe that can efficiently remove moisture while effectively preventing the loss of material particles, ensuring continuous production stability and economic efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a desiccant pipe to prevent material loss. By designing the bends and height of the desiccant pipe, it overcomes the defect that small materials are easily moved under strong negative pressure airflow and ultimately drawn into the desiccant pipe along with moisture, resulting in material loss. The specific technical solution is as follows:
[0005] A dehumidification pipe for preventing material loss includes a support frame, a negative pressure unit, a main exhaust pipe, and branch exhaust pipes. The main exhaust pipe is mounted on the support frame, one end of which is connected to the negative pressure unit, and the other end of which is sealed. One end of each branch exhaust pipe is connected to the side wall of the main exhaust pipe. Each branch exhaust pipe includes a first pipe and a second pipe. One end of the first pipe is connected to the side wall of the main exhaust pipe, and the other end of the first pipe is connected to one end of the second pipe. The other end of the second pipe is connected to a dehumidification device. The included angle between the axes of the first pipe and the second pipe at their interface is an acute angle.
[0006] Preferably, the included angle between the axes at the interface of the first pipe and the second pipe is 30-60 degrees.
[0007] Preferably, the end of the second pipe that connects to the first pipe is in a vertical position.
[0008] Preferably, the interface between the first pipe and the second pipe is higher than that of the main exhaust pipe.
[0009] Preferably, the exhaust main duct has multiple square cleaning windows arranged in an array, and a baffle is installed around the edge of each cleaning window, with a cover plate rotatably installed on the baffle.
[0010] Preferably, the cover plate and the side baffle are rotatably connected by a hinge, and a snap-fit assembly is installed on the side of the cover plate away from the hinge, which is connected to the baffle plate.
[0011] Preferably, the cover plate is made of a transparent material.
[0012] Preferably, an annular groove is provided on the side of the cover plate that contacts the baffle, and a sealing ring is installed in the annular groove. The shape of the sealing ring is the same as that of the baffle.
[0013] Compared with existing technologies, this utility model has the following beneficial effects:
[0014] 1. This utility model sets the exhaust branch pipe into a first pipe and a second pipe, and sets the included angle between the axes of the first pipe and the second pipe at the interface to an acute angle. Therefore, when the material follows the airflow through the interface, most of the material will be blocked by the corner at the interface. When the material gathers into a large group, the gravity will be greater than the thrust of the airflow, thus overcoming the effect of the airflow and falling into the exhaust equipment, thereby reducing the loss of raw materials.
[0015] 2. This utility model features cleaning windows arrayed on the exhaust manifold, with the cover plate made of transparent material, allowing for quick inspection and cleaning when the exhaust manifold becomes blocked. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 This is a side view of the present invention.
[0019] Explanation of key figure labels:
[0020] 1. Support frame; 2. Main exhaust pipe; 3. Branch exhaust pipe; 31. First pipe; 32. Second pipe; 4. Baffle; 5. Cover plate; 6. Hinge; 7. Dehumidification equipment. Detailed Implementation
[0021] 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.
[0022] Next, the working principle of this embodiment will be described in detail so that those skilled in the art can better understand this utility model:
[0023] Example 1:
[0024] See Figure 1 This embodiment provides a moisture-venting pipe to prevent material loss, which mainly includes a support frame 1, a negative pressure machine, a main exhaust pipe 2, and a branch exhaust pipe 3.
[0025] The main exhaust pipe 2 is fixedly installed on the support frame 1 by a bracket. Its right end is sealed to the air inlet of the negative pressure machine, and its left end is sealed by welding a blind flange. Multiple exhaust branch pipes 3 are evenly connected to the side wall of the main exhaust pipe 2.
[0026] The exhaust branch pipe 3 consists of a first pipe 31 and a second pipe 32. One end of the first pipe 31 is vertically connected to the side wall of the main exhaust pipe 2, and the other end is welded to one end of the second pipe 32. The angle between the axes of the first pipe 31 and the second pipe 32 is 45° (preferably within the range of 30°-60°), and the height of this interface is higher than the top of the main exhaust pipe 2. The end of the second pipe 32 connected to the first pipe 31 is vertically downward, and the other end is connected to the exhaust port of the dehumidification device 7 (e.g., a drying tank) via a flange. Existing dehumidification devices 7 (e.g., drying tanks, silos) are equipped with adjustable air inlet valves at the inlet or a dedicated air inlet channel. The air intake volume is matched with the fan exhaust volume. The amount of moisture removed by the fan is matched by the amount of fresh air (or inert gas, for flammable and explosive materials) replenished by the air inlet valve for drying, ensuring a "balanced" air supply within the system and fundamentally preventing abnormal increases in negative pressure due to air deficiency.
[0027] On the upper surface of the exhaust main duct 2, a square cleaning window is opened every 2 meters along its length. A rectangular baffle 4 is welded around the edge of the cleaning window. The baffle 4 is designed to form a stable plane with the cover plate 5 for sealing and to prevent leakage. A transparent cover plate 5 (made of materials such as polycarbonate, glass, and PMMA) that matches the size of the cleaning window is rotatably connected to the baffle 4 on one side via a hinge 6. On the side of the cover plate 5 away from the hinge 6, a stainless steel quick-opening snap-fit assembly is installed to press the cover plate 5 onto the baffle 4 to achieve a seal. The hinge 6 and the snap-fit allow for quick opening and closing of the cover plate 5, which improves the efficiency of subsequent maintenance of the exhaust main duct 2 compared to the existing method of fixing with bolts and other components. To further ensure sealing, an annular groove matching the shape of the baffle 4 is opened on the surface of the cover plate 5 facing the inside of the duct. A high-temperature resistant rubber sealing ring is embedded in the groove.
[0028] Working principle:
[0029] When the negative pressure unit is operating, humid air and any entrained fine particles inside the drying equipment are drawn into the second pipe 32 and flow vertically upwards. When the airflow reaches the corner where the first pipe 31 and the second pipe 32 meet, the flow direction changes abruptly. Solid particles with greater inertia are unable to quickly change direction with the airflow, and most of them collide with the pipe wall and are intercepted and slowed down. The intercepted particles gradually gather at the corner. When the weight of the agglomerate exceeds the drag force exerted on it by the airflow, the agglomerate falls back down the vertical second pipe 32 into the dehumidification device 7 below under the action of gravity, thus achieving gas-solid separation and effectively preventing material loss.
[0030] Meanwhile, operators can periodically observe the material accumulation inside the exhaust main pipe 2 through the transparent cover 5. If a partial blockage is found, the latch assembly can be quickly opened, the cover 5 lifted, and the inside of the pipe cleaned through the cleaning window, making maintenance convenient.
[0031] Example 2:
[0032] This embodiment is basically the same in structure as Embodiment 1, except that the angle between the axes of the first pipe 31 and the second pipe 32 is 30°, and the end of the second pipe 32 connected to the first pipe 31 also remains vertically downward. This angle is suitable for working conditions where the material density is lower and it is more easily carried away by the airflow, and the steeper bend further increases the material separation efficiency.
[0033] Example 3:
[0034] This embodiment is basically the same in structure as Embodiment 1, except that the angle between the axes of the first pipe 31 and the second pipe 32 is 60°. This angle is suitable for operating conditions with large airflow load and slightly lower requirements for system pressure drop, ensuring a certain separation effect while taking into account the gas flow efficiency.
[0035] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A moisture-venting pipe for preventing material loss, comprising a support frame (1), a negative pressure unit, a main exhaust pipe (2), and exhaust branch pipes (3), wherein the main exhaust pipe (2) is mounted on the support frame (1), one end of the main exhaust pipe (2) is connected to the negative pressure unit, the other end of the main exhaust pipe (2) is sealed, and one end of the exhaust branch pipe (3) is connected to the side wall of the main exhaust pipe (2), characterized in that: The exhaust branch pipe (3) includes a first pipe (31) and a second pipe (32). One end of the first pipe (31) is connected to the side wall of the exhaust main pipe (2), and the other end of the first pipe (31) is connected to one end of the second pipe (32). The other end of the second pipe (32) is connected to the dehumidification device (7). The included angle between the axes of the first pipe (31) and the second pipe (32) at the interface is an acute angle.
2. The moisture-wicking pipe for preventing material loss according to claim 1, characterized in that, The angle between the axes at the interface of the first pipe (31) and the second pipe (32) is 30-60 degrees.
3. A moisture-wicking pipe for preventing material loss according to claim 1, characterized in that, The end of the second pipe (32) that connects to the first pipe (31) is in a vertical position.
4. A moisture-ventilated pipe for preventing material loss according to claim 1, characterized in that, The interface between the first pipe (31) and the second pipe (32) is higher than the exhaust main pipe (2).
5. A moisture-ventilated pipe for preventing material loss according to claim 1, characterized in that, Multiple square cleaning windows are arrayed on the exhaust main pipe (2), and a baffle (4) is installed around the edge of the cleaning window. A cover plate (5) is rotatably installed on the baffle (4).
6. A moisture-ventilated pipe for preventing material loss according to claim 5, characterized in that, The cover plate (5) and the side baffle (4) are rotatably connected by a hinge (6). A snap fastener assembly is installed on the side of the cover plate (5) away from the hinge (6), and the cover plate (5) is connected to the baffle (4) through the snap fastener assembly.
7. A moisture-ventilated pipe for preventing material loss according to claim 5, characterized in that, The cover plate (5) is made of transparent material.
8. A moisture-ventilated pipe for preventing material loss according to claim 6, characterized in that, An annular groove is provided on the side of the cover plate (5) that contacts the baffle (4), and a sealing ring is installed in the annular groove. The shape of the sealing ring is the same as that of the baffle (4).