Pneumatic conveying system suitable for materials with steam

Abstract

The utility model discloses a pneumatic conveying system suitable for materials with steam, which comprises a feeding rotary valve, an adjustable accelerating chamber, a material-gas separator, a discharging rotary valve and a water ring vacuum pump set which are connected in series through pipelines to ensure smooth conveying of the materials and air, an air filtering assembly is arranged on the front section of the air inlet end of the adjustable accelerating chamber, and the air filtering assembly is connected with the water ring vacuum pump set. And an adjustable pore plate at the air inlet end of the adjustable accelerating chamber can modify the position of an air inlet hole in the pipeline, so that the capacity of the conveying system is adjusted. On the premise that the requirement for the vacuum degree is not high, steam or a small amount of liquid materials can be conveyed, the pump body is prevented from being eroded and corroded by the steam or the small amount of liquid, and the long-time operation state can be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic conveying of powder and granular materials, in particular to a pneumatic conveying system suitable for materials with steam. Background Technique

[0002] Pneumatic conveying, also known as pneumatic transportation, uses the energy of air flow to transport granular materials along the air flow direction in a closed pipeline, which is a specific application of fluidization technology. The structure of the pneumatic conveying device is simple and easy to operate. It can be used for horizontal, vertical or inclined conveying. During the conveying process, physical operations such as heating, cooling, drying and air classification of materials or certain chemical operations can be carried out simultaneously.

[0003] In the pneumatic conveying system, we often use a Roots vacuum pump as the power source. The structure of this pump is relatively simple and consists of two rotating impellers. One impeller is fixed and the other is rotating. When the rotating impeller rotates, it sucks in gas from the inlet and pushes the gas into the exhaust port. The advantages of this pump are simple operation, high efficiency, low noise, convenient maintenance, etc. However, when the materials to be conveyed are some with steam or a small amount of liquid, these steam or a small amount of liquid will cause thermal erosion or corrosion to the pump body, greatly shortening the service life of the Roots vacuum pump. Therefore, we choose to use a water ring vacuum pump to replace it. The advantages of this pump are that it can extract some gases with water vapor or other liquids and can work continuously for a long time, etc. The adjustable acceleration chamber is a technical improvement made for the matching system when using a water ring vacuum pump group as the power source to ensure the smooth operation of the system. Therefore, in view of the above problems, a pneumatic conveying system suitable for materials with steam is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pneumatic conveying system suitable for materials with steam in order to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions. A pneumatic conveying system suitable for materials with steam includes a feeding rotary valve, an adjustable acceleration chamber, a material-gas separator, a discharging rotary valve and a water ring vacuum pump group. The adjustable acceleration chamber, the material-gas separator and the water ring vacuum pump group are connected in series by a conveying pipeline and a vacuum pipeline to form a pneumatic conveying system.

[0006] Preferably, an air filtering component is arranged in front of the air inlet end of the adjustable acceleration chamber.

[0007] Preferably, an adjustable orifice plate is arranged at the air inlet end of the adjustable acceleration chamber.

[0008] Preferably, a discharge rotary valve is installed at the discharge port of the material-gas separator, and the gas output port located at the top of the material-gas separator is connected to the water ring vacuum pump set through a vacuum pipeline.

[0009] Preferably, the water ring vacuum pump set includes a gas storage tank, a water ring vacuum pump, a cooling water tank and a circulating water pipe.

[0010] Compared with the prior art, the advantages of the present utility model are as follows: it can be applied to the material transportation with steam, effectively prevent the steam from eroding and corroding the power source equipment, and extend the service life. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 It is the system schematic diagram of the present utility model;

[0013] Figure 2 It is the schematic diagram of the adjustable acceleration chamber state.

[0014] In the figure: 1, feed rotary valve; 2, adjustable acceleration chamber; 3, material-gas separator; 4, discharge rotary valve; 5, water ring vacuum pump set; 501, gas storage tank; 502, water ring vacuum pump; 503, cooling water tank; 504, circulating water pipe; 6, conveying pipeline; 7, vacuum pipeline. Detailed Embodiments

[0015] In order to make the purpose, features and advantages of the present utility model more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0016] The technical solutions of the present utility model will be further described below with reference to the drawings and through specific embodiments.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0018] Please refer to Figure 1-2 As shown, a pneumatic conveying system applicable to steam-carrying materials includes a feed rotary valve 1, an adjustable acceleration chamber 2, a material-gas separator 3, a discharge rotary valve 4, and a water-ring vacuum pump group 5. It is characterized in that: A pneumatic conveying system is formed by connecting the adjustable acceleration chamber 2, the material-gas separator 3, and the water-ring vacuum pump group 5 in series through a conveying pipeline 6 and a vacuum pipeline 7.

[0019] An air filtration assembly is provided at the front section of the intake end of the adjustable acceleration chamber 2 for filtering fresh air.

[0020] The adjustable orifice plate at the intake end of the adjustable acceleration chamber 2 can modify the position of the intake hole in the pipeline, thereby adjusting the production capacity of the conveying system.

[0021] A discharge rotary valve 4 is installed at the discharge port of the material-gas separator 3. The gas outlet at the top of the material-gas separator 3 is connected to the water-ring vacuum pump group 5 through a vacuum pipeline 7. The material-gas separator 3 can separate the conveyed materials from the gas. The materials enter the subsequent process through the discharge rotary valve 4, and the gas enters the water-ring vacuum pump group 5 through the vacuum pipeline 7. After the steam carried by the materials enters the water-ring vacuum pump group 5 together with the conveying gas, it dissolves in the water flow and is finally discharged into the atmosphere, without causing damage or corrosion to the pump body during the process.

[0022] The water-ring vacuum pump group 5 includes an air storage tank 501, a water-ring vacuum pump 502, a cooling water tank 503, and a circulating water pipe 504.

[0023] When the present utility model is in use, as Figure 1 shown, the steam-carrying materials are evenly discharged through the feed rotary valve 1 and fall into the conveying pipeline 6. Under the system negative pressure generated by the water-ring vacuum pump group 5, they are conveyed to the material-gas separator 3 together with the air. The material-gas separator 3 can separate the conveyed materials from the gas. The materials enter the subsequent process through the discharge rotary valve 4, and the gas enters the water-ring vacuum pump group 5 through the vacuum pipeline 7. After the steam carried by the materials enters the water-ring vacuum pump group 5 together with the conveying gas, it dissolves in the water flow and is finally discharged into the atmosphere, without causing damage or corrosion to the pump body during the process. The adjustable orifice plate at the intake end of the adjustable acceleration chamber 2 can modify the position of the intake hole in the pipeline. Different positions of the orifice plate are matched according to the production capacity requirements of the system.

[0024] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0025] As described above, the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A pneumatic conveying system for materials with steam, comprising a feed rotary valve (1), an adjustable acceleration chamber (2), a material-gas separator (3), a discharge rotary valve (4) and a water ring vacuum pump unit (5), characterized in that: The adjustable acceleration chamber (2), the material-gas separator (3) and the water ring vacuum pump group (5) are connected in series via a conveying pipeline (6) and a vacuum pipeline (7) to form a pneumatic conveying system.

2. A pneumatic conveying system for materials with steam according to claim 1, characterized in that: The front section of the air inlet end of the adjustable acceleration chamber (2) is equipped with an air filter assembly.

3. A pneumatic conveying system for materials with steam according to claim 1, characterized in that: An adjustable orifice plate is provided at the air inlet end of the adjustable acceleration chamber (2).

4. A pneumatic conveying system for materials with steam according to claim 1, characterized in that: A discharge rotary valve (4) is installed at the discharge port of the material-gas separator (3), and a gas output port located at the top of the material-gas separator (3) is connected to a water ring vacuum pump group (5) via a vacuum pipeline (7).

5. A pneumatic conveying system for materials with steam according to claim 4, characterized in that: The water ring vacuum pump assembly (5) comprises a gas storage tank (501), a water ring vacuum pump (502), a cooling water tank (503) and a circulating water pipe (504).

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