Rotary feed valve with gas seal

Abstract

The utility model belongs to the technical field of material conveying equipment discloses a kind of rotation feed valve using gas seal, including valve body and the rotor in the material passage of being installed in the valve body inside, the rotor is connected with driving device by rotating shaft, the rotor is driven by the driving device and rotates around its center line to realize the conveying of material;Gas seal device is installed on the valve body, and the gas seal device includes gas source, and sealing nozzle is connected with gas source by gas delivery pipeline, the sealing nozzle is installed at the clearance between the end portion of valve body and rotor, and gas is injected towards clearance and forms gas film at the clearance between the end portion of valve body and rotor.This utility model's rotation feed valve using gas seal can improve sealing performance, prolong service life, reduce maintenance cost, meet the needs of different industrial production processes, and can solve the problems of poor sealing performance and inconvenient maintenance in the prior art.

Description

Technical Field

[0001] This utility model belongs to the technical field of material conveying equipment, and in particular relates to a rotary feeder valve that utilizes gas sealing. Background Technology

[0002] Rotary feed valves are commonly used in many industrial production processes to transport materials from one conveying system to another. Continuous, stable, and precise material transport is crucial. As a common material conveying device, the main function of a rotary feed valve is to uniformly and quantitatively transport materials stored in a hopper to subsequent processing steps or pipelines. Material transport must be carried out in a sealed environment to prevent material leakage, the introduction of external impurities, and the escape of harmful gases.

[0003] However, traditional rotary feed valves have some sealing problems. For example, the seal between the valve body and the rotor is poor, which can easily lead to material leakage. This not only wastes materials but may also pollute the production environment and even cause safety hazards. The problem of material leakage is more prominent when conveying materials that are hazardous or of high value. The following are some of the disadvantages:

[0004] Poor sealing performance: Traditional rotary feeders typically use mechanical seals. After long-term operation, due to material wear, corrosion, and aging of mechanical parts, the sealing gap between the valve body and the rotor gradually increases, leading to serious material leakage. For example, when conveying easily leaking materials such as flour and chemical powders, the leaked material not only causes material waste and increases production costs, but may also generate dust in the workshop, polluting the production environment, endangering the health of operators, and even causing safety accidents such as explosions under certain conditions.

[0005] Inconvenient maintenance: The mechanical seal structure of existing rotary feed valves is relatively complex, usually consisting of multiple sealing components such as sealing rings, sealing rings, and springs. When the sealing performance deteriorates and maintenance is required, the process of disassembling and replacing these sealing components is cumbersome, requiring professional maintenance personnel to spend a lot of time and effort, resulting in prolonged equipment downtime and reduced production efficiency.

[0006] Poor adaptability: Different materials vary significantly in properties, such as particle size, humidity, viscosity, and corrosiveness. Traditional rotary feeders struggle to adapt to the conveying needs of diverse materials, and their sealing performance is often affected by the material's properties. For example, some viscous materials tend to adhere to the sealing surface, further exacerbating wear on sealing components and reducing sealing performance. Furthermore, for materials with high gas content, traditional sealing methods may not effectively prevent gas leakage, impacting the stability and accuracy of material conveying.

[0007] In addition, the sealing structure of some existing rotary feeders is relatively complex, making it difficult to maintain and replace sealing components, which increases the operating cost and downtime of the equipment.

[0008] Therefore, developing a rotary feeder valve with reliable sealing performance, simple structure, and easy maintenance is of great practical significance. Utility Model Content

[0009] Based on the shortcomings of the prior art, the technical problem solved by this utility model is to provide a rotary feeder valve that utilizes gas sealing, which can improve sealing performance, extend service life, reduce maintenance costs, meet the needs of different industrial production processes, and solve the problems of poor sealing performance and inconvenient maintenance in the prior art.

[0010] To solve the above-mentioned technical problems, this utility model provides a rotary feeder valve utilizing gas sealing, comprising a valve body and a rotor installed in a material channel inside the valve body. The rotor is connected to a drive device via a rotating shaft, and the rotor rotates around its center line under the drive of the drive device to realize material conveying. A gas sealing device is installed on the valve body, the gas sealing device comprising a gas source and a sealing nozzle connected to the gas source via a gas conveying pipe. The sealing nozzle is installed in the gap between the ends of the valve body and the rotor, spraying gas toward the gap and forming a gas film in the gap between the ends of the valve body and the rotor.

[0011] Furthermore, the gas sealing device also includes a pressure regulating valve, a flow control valve, and a ball valve installed on the gas delivery pipeline.

[0012] Preferably, the gas source is an air compressor or a gas storage tank that provides inert gas.

[0013] Furthermore, the rotor is provided with multiple radially arranged feed troughs.

[0014] Preferably, the drive device includes a motor and a reducer, the output shaft of the motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the rotating shaft to provide power for the rotation of the rotor.

[0015] Furthermore, the valve body has a feed inlet at the top and a discharge outlet at the bottom, which are connected to the material channel to guide the material in and out.

[0016] Therefore, the gas-sealed rotary feeder of this invention has at least the following beneficial effects:

[0017] 1. Excellent sealing performance: The gas film formed between the valve body and the rotor by the gas sealing device effectively prevents material leakage, greatly improves the sealing performance of the rotary feeder, reduces material waste and environmental pollution, and is especially suitable for conveying materials that are prone to leakage, toxic and harmful or high value.

[0018] 2. Simple structure and easy maintenance: Compared with the traditional complex mechanical seal structure, the gas sealing device has a relatively simple structure, which does not require complex sealing components and frequent maintenance operations, reducing equipment maintenance costs and downtime, and improving equipment reliability and operating efficiency.

[0019] 3. High adaptability: The gas sealing device can be flexibly adjusted according to different material characteristics and working environment, such as selecting appropriate gas type, pressure and flow rate, to meet the sealing requirements under various working conditions, and has strong versatility and adaptability.

[0020] 4. The gas-sealed rotary feeder of this invention has the advantages of good sealing performance, simple structure, convenient maintenance and strong adaptability. It can effectively solve the sealing problem of existing rotary feeders, improve the reliability and efficiency of material conveying, and has broad application prospects in industrial production.

[0021] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, the following detailed description is provided in conjunction with preferred embodiments and accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0023] Figure 1 This is a front view of the rotary feeder valve utilizing a gas seal according to this utility model;

[0024] Figure 2 This is a side view of the rotary feeder valve utilizing a gas seal according to this utility model;

[0025] Figure 3 This is a top view of the rotary feeder valve utilizing a gas seal according to this utility model;

[0026] Figure 4 This is a partial pipeline diagram of the gas sealing device of this utility model. Detailed Implementation

[0027] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, which form part of this specification. The principles of this utility model are illustrated through these embodiments, and other aspects, features, and advantages of this utility model will become apparent from this detailed description. In the accompanying drawings, the same or similar parts in different figures are indicated by the same reference numerals.

[0028] like Figures 1 to 4 As shown, the rotary feeder valve utilizing gas sealing of this utility model mainly includes a valve body 1, a rotor 2, a drive device 3, and a gas sealing device 4.

[0029] The valve body 1 is a cylindrical structure with a material channel 11 inside. It has an inlet 12 at the top and an outlet 13 at the bottom. The inlet 12 and the outlet 13 are connected to the material channel 11 to guide the material in and out.

[0030] Rotor 2 is installed in the material channel 11 inside valve body 1. Rotor 2 has multiple radially arranged material troughs 21. Rotor 2 is connected to drive device 3 via rotating shaft 22. Rotor 2 can rotate around its center line under the drive of drive device 3 to realize material conveying. The gap between rotor 2 and valve body 1 is small to reduce the possibility of material leakage.

[0031] The drive unit 3 includes a motor 31 and a reducer 32. The output shaft of the motor 31 is connected to the input shaft of the reducer 32, and the output shaft of the reducer 32 is connected to the rotating shaft 22, providing power for the rotation of the rotor 2. The drive unit 3 is connected to the rotor 2 to provide power for the rotation of the rotor 2. By using a shaft connection between the motor 31 and the rotor 2 through the reducer 32, the rotor 2 can rotate stably and at a low speed, thereby ensuring the uniform conveying of materials.

[0032] The gas sealing device 4 is installed on the end plates at both ends of the valve body 1. The gas sealing device 4 includes a gas source 41, a gas delivery pipeline 42, and a sealing nozzle 43. The gas source 41 is an air compressor or a gas storage tank, which can provide a stable gas at a certain pressure, such as compressed air or inert gases such as nitrogen. The gas delivery pipeline 42 delivers the gas generated by the gas source 41 to the sealing nozzle 43. The sealing nozzle 43 is installed in the gap between the ends of the valve body 1 and the rotor 2, and sprays gas toward the gap, forming a gas film in the gap between the ends of the valve body 1 and the rotor 2, effectively preventing material leakage, while preventing outside air from entering the material channel 11, ensuring the sealing and purity of the material delivery.

[0033] The position and angle of the sealing nozzle 43 have been optimized to ensure that the gas can be sprayed evenly and effectively to each position of the gap (each gap position between the end of the valve body 1 and the rotor 2), thereby improving the gas sealing effect.

[0034] The gas sealing device 4 also includes a pressure regulating valve 44, a flow control valve 45, and a ball valve 46 installed on the gas conveying pipeline 42. These valves can precisely adjust the gas pressure and flow rate according to factors such as the properties of the material, the conveying volume, and the working environment of the equipment, in order to achieve the best sealing effect while avoiding gas waste.

[0035] Below, refer to 1- Figure 4 Based on the above description of structural technical features, the working process of the gas-sealed rotary feeder valve of this utility model will be briefly described as follows:

[0036] In actual operation, material enters the material channel 11 inside the valve body 1 through the feed inlet 12 and falls into the material trough 21 of the rotor 2. The drive device 3 drives the rotor 2 to rotate, and the material trough 21 passes through the feed inlet 12 and the discharge outlet 13 in sequence, conveying the material from the feed inlet 12 to the discharge outlet 13 and discharging it. At the same time, the gas generated by the air source 41 is conveyed to the sealing nozzle 43 through the gas conveying pipe 42. The sprayed gas forms an air film in the gap between the valve body 1 and the end of the rotor 2, effectively preventing material leakage and ensuring the sealing and stability of the material conveying process.

[0037] In summary, the gas-sealed rotary feeder of this invention has advantages such as good sealing performance, simple structure, convenient maintenance and strong adaptability. It can effectively solve the sealing problems of existing rotary feeders, improve the reliability and efficiency of material conveying, and has broad application prospects in industrial production.

[0038] The above description is merely a preferred embodiment of the present utility model, and should not be construed as limiting the scope of the present utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present utility model, and these improvements and modifications are also considered to be within the scope of protection of the present utility model.

Claims

1. A rotary feed valve utilizing a gas seal, comprising a valve body (1) and a rotor (2) installed in a material passage (11) inside the valve body (1), characterized in that, The rotor (2) is connected to the drive device (3) via a rotating shaft (22). The rotor (2) rotates around its center line under the drive of the drive device (3) to realize the conveying of materials. A gas sealing device (4) is installed on the valve body (1). The gas sealing device (4) includes a gas source (41) and a sealing nozzle (43) connected to the gas source (41) through a gas delivery pipe (42). The sealing nozzle (43) is installed in the gap between the valve body (1) and the rotor (2), and sprays gas toward the gap to form a gas film in the gap between the valve body (1) and the rotor (2).

2. The rotary feed valve utilizing a gas seal as described in claim 1, characterized in that, The gas sealing device (4) also includes a pressure regulating valve (44), a flow control valve (45), and a ball valve (46) installed on the gas delivery pipeline (42).

3. The rotary feed valve utilizing a gas seal as described in claim 1, characterized in that, The gas source (41) is an air compressor or gas storage tank that provides inert gas.

4. The rotary feed valve utilizing a gas seal as described in claim 1, characterized in that, The rotor (2) is provided with a plurality of radially arranged feed troughs (21).

5. The rotary feed valve utilizing a gas seal as described in claim 1, characterized in that, The drive device (3) includes a motor (31) and a reducer (32). The output shaft of the motor (31) is connected to the input shaft of the reducer (32), and the output shaft of the reducer (32) is connected to the rotating shaft (22) to provide power for the rotation of the rotor (2).

6. The rotary feed valve utilizing a gas seal as described in claim 1, characterized in that, The valve body (1) has a feed inlet (12) at the top and a discharge outlet (13) at the bottom. The feed inlet (12) and discharge outlet (13) are respectively connected to the material channel (11) to guide the material in and out.

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