A dust removal pipe one-way valve

Abstract

The utility model belongs to dust removal pipe device technical field relates to a dust removal pipe check valve, including valve body, valve body is hollow cylinder structure, the front side of valve body is the entrance end rear side is the export end, its characterized in that, the entrance end of valve body is provided with the connecting flange, is provided with the protective grating in the entrance end, the protective grating fixed mounting is in the entrance end inside of valve body immediately after the rear side of connecting flange, the inside connection of valve body has the curtain, the curtain is located downstream of protective grating, the upper side edge of curtain is fixedly connected in the inner wall of valve body. The utility model simplifies installation and connection, effectively prevent gas and dust backflow, ensure that dust removal system stable operation, block the large -sized foreign matter into the inside of valve body, avoid key components damage, reduce maintenance frequency and cost, adapt to high dust bad working condition.

Description

Technical Field

[0001] This utility model belongs to the technical field of dust removal pipe devices, specifically relating to a one-way valve for dust removal pipes. Background Technology

[0002] In industrial production, especially in areas involving dust collection, dust collection systems are crucial components and safety equipment. In actual operation, particularly during system startup, shutdown, malfunctions, or fluctuations in fan power, there is a risk of gas and dust backflow. To prevent backflow, installing check valves at critical locations in the dust collection pipe is a common technical measure. However, most existing check valves lack effective inlet foreign object protection mechanisms.

[0003] Existing one-way valves for dust collection pipelines suffer from problems such as easy jamming, poor sealing, susceptibility to damage from foreign objects, and inconvenient maintenance. Therefore, a new one-way valve for dust collection pipelines is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a dust removal pipe check valve, which is simple in structure, highly reliable, wear-resistant and has foreign object protection function, and solves the problems of easy jamming, poor sealing, easy damage from foreign objects and inconvenient maintenance in the existing technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a one-way valve for a dust removal pipe, including a valve body. The valve body has a hollow cylindrical structure, with the front side of the valve body being the inlet end and the rear side being the outlet end. A connecting flange is provided at the inlet end of the valve body, and a protective grille is provided inside the inlet end. The protective grille is fixedly installed inside the inlet end of the valve body, adjacent to the rear side of the connecting flange. A baffle curtain is connected inside the valve body, located downstream of the protective grille, and the upper edge of the baffle curtain is fixedly connected to the inner wall of the valve body.

[0006] Preferably, the protective grille is a mesh structure woven from welded steel bars.

[0007] Preferably, the curtain includes at least one flexible PVC diaphragm, and the upper edge of the curtain is fixedly connected to a mounting seat pre-set on the inner wall of the top of the valve body by adhesive or snap-fit.

[0008] Preferably, the bottom edge of the curtain is fitted to the lower part of the inner wall of the valve body to form a seal.

[0009] Preferably, the protective grille is fixedly installed inside the valve body inlet end by welding.

[0010] Preferably, the valve body has a cylindrical structure with a circular cross-section.

[0011] Preferably, the curtain is made of multiple flexible PVC films that are partially overlapped and spliced ​​together in the width direction.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. This utility model simplifies installation and connection, effectively prevents gas and dust backflow, ensures stable operation of the dust removal system, blocks large foreign objects from entering the valve body, avoids damage to key components, reduces maintenance frequency and cost, and is suitable for harsh working conditions with high dust levels.

[0014] 2. This utility model provides a dust removal pipe check valve with simple structure, high reliability, wear resistance and foreign object protection function, which solves the problems of easy jamming, poor sealing, easy damage from foreign objects and inconvenient maintenance in the existing technology. Attached Figure Description

[0015] 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. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a side view of a one-way valve for a dust removal pipe according to one embodiment;

[0017] Figure 2 This is a front view schematic diagram of a dust removal pipe check valve according to one embodiment;

[0018] In the above figures, 1 is the valve body, 2 is the inlet end, 3 is the outlet end, 4 is the connecting flange, 5 is the protective grille, 6 is the baffle curtain, and 7 is the mounting base. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, as Figure 1-2As shown, a one-way valve for a dust collector pipe includes a valve body 1, which has a hollow cylindrical structure. The valve body 1 provides an airflow channel and supports internal components. The hollow cylindrical structure has a high degree of compatibility with the dust collector pipe, reducing turbulence. The front side of the valve body 1 is the inlet end 2, and the rear side is the outlet end 3. The inlet end 2 of the valve body 1 is provided with a connecting flange 4, which is quickly connected to the dust collector pipe by bolts. The connecting flange 4 is a standardized interface, which is convenient to install and has a reliable seal.

[0022] A protective grille 5 is installed inside the inlet end 2, which is fixedly installed inside the valve body 1, adjacent to the rear side of the connecting flange 4. The protective grille 5 is the first line of defense, intercepting large particles of foreign matter. Its permeable design does not affect airflow and effectively prevents foreign matter from entering the valve body 1. A baffle curtain 6 is connected inside the valve body 1. The baffle curtain 6 is located downstream of the protective grille 5, and its upper edge is fixedly connected to the inner wall of the valve body 1. When airflow enters from the inlet end 2, it pushes the baffle curtain 6 towards the outlet end 3, allowing dust to pass through. When airflow blows from the opposite direction, the baffle curtain 6 automatically droops due to gravity and negative pressure, fitting against the protective grille 5 to form a seal.

[0023] The specific design of the aforementioned key components will be discussed in detail below:

[0024] The protective grille 5 is a mesh structure woven from welded steel bars. The steel bars are harder than wire mesh, effectively blocking impacts from stones and other foreign objects, preventing them from impacting the downstream curtain 6. The welded fixing ensures no risk of loosening and prevents deformation or detachment under long-term vibration. The mesh spacing can be customized, typically 20-50mm, effectively intercepting foreign objects while reducing airflow resistance. The steel bars are a commonly used industrial material, and damage can be repaired by localized welding.

[0025] The baffle 6 includes at least one flexible PVC diaphragm. The upper edge of the baffle 6 is fixedly connected to a mounting seat 7 pre-set on the inner wall of the top of the valve body 1 by adhesive or snap-fit. The mounting seat 7 is a fixing groove or snap-fit ​​structure pre-set on the inner wall of the top of the valve body 1, providing a detachable fixing point for the baffle 6, facilitating the replacement and maintenance of the baffle 6. The PVC diaphragm has a smooth surface, is not easily worn by dust, and can be opened with low airflow pressure without disassembling the valve body 1. A single damaged diaphragm can be replaced independently. When replacing the PVC diaphragm, the PVC diaphragm is inserted into the valve body 1 from the rear end through the outlet end 3 using a tool.

[0026] The bottom edge of the baffle curtain 6 is fitted against the lower part of the inner wall of the valve body 1 to form a seal. After hanging down naturally, the baffle curtain 6 is fully fitted against the inner wall of the circular valve body 1. The flexible PVC can fit into uneven areas of the valve body 1 wall to compensate for manufacturing tolerances. The seal is achieved by gravity, eliminating the need for springs or counterweight mechanisms. The protective grille 5 is fixedly installed inside the inlet end 2 of the valve body 1 by welding. Welding provides permanent positioning, preventing the grille from shifting due to loose bolts and blocking the airflow channel. The weld seam is gapless and can withstand high wind speeds. The valve body 1 has a circular cross-section cylindrical structure. The circular channel has no turbulent dead angles, reducing dust accumulation. The baffle curtain 6 fits tightly against the arc-shaped inner wall and can be directly manufactured using standard steel pipe cutting, reducing costs.

[0027] The curtain 6 is composed of multiple overlapping flexible PVC membrane sheets along its width. If a single sheet is damaged, only that sheet needs to be replaced, reducing maintenance costs. Each membrane sheet swings independently, preventing incomplete sealing of large single sheets at low airflow. The overlapping area is ≥20mm wide, forming a double sealing layer and improving backflow prevention reliability. Even if a foreign object gets stuck, only a localized area of ​​the membrane sheet is affected, and the remaining membrane sheets can still function.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A one-way valve for a dust collector pipe, comprising a valve body, the valve body having a hollow cylindrical structure, with the front side of the valve body being the inlet end and the rear side being the outlet end, characterized in that, The valve body is provided with a connecting flange at the inlet end, and a protective grille is provided inside the inlet end. The protective grille is fixedly installed inside the valve body inlet end, adjacent to the rear side of the connecting flange. A baffle is connected inside the valve body, and the baffle is located downstream of the protective grille. The upper edge of the baffle is fixedly connected to the inner wall of the valve body.

2. The dust collector pipe check valve according to claim 1, characterized in that, The protective grille is a mesh structure woven from welded steel bars.

3. A one-way valve for a dust collector pipe according to claim 1, characterized in that, The curtain includes at least one flexible PVC film, and the upper edge of the curtain is fixedly connected to a mounting seat pre-set on the inner wall of the top of the valve body by adhesive or snap-fit.

4. A one-way valve for a dust collector pipe according to claim 1, characterized in that, The bottom edge of the curtain is fitted to the lower part of the inner wall of the valve body to form a seal.

5. A one-way valve for a dust collector pipe according to claim 1 or 2, characterized in that, The protective grille is fixedly installed inside the valve body inlet by welding.

6. A one-way valve for a dust collector pipe according to claim 1, characterized in that, The valve body has a cylindrical structure with a circular cross-section.

7. A one-way valve for a dust collector pipe according to claim 1 or 3, characterized in that, The curtain is made of multiple flexible PVC films that are partially overlapped and spliced ​​together in the width direction.

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