A charge gas separation valve

Abstract

The application discloses a material-gas separation valve and relates to the field of powder pneumatic conveying, which comprises a valve body, a first channel and a second channel are arranged in the valve body, the first channel and the second channel are communicated, and a T-shaped channel structure is formed after the first channel and the second channel are communicated, a material-gas partition plate is arranged eccentrically in the second channel, and the material-gas partition plate divides the second channel into a material unloading channel and a gas flow channel; a rotatable valve core is arranged in the valve body, when the valve core is rotated to a horizontal state, the outer edges of the valve core are in contact with the inner walls of the upper ports of the second channel, when the valve core is rotated to a vertical state, the upper outer edges of the valve core are in contact with the inner walls of the first channel, and the lower outer edges of the valve core are in contact with the top of the material-gas partition plate. When the material is unloaded by pneumatic conveying, the powder can directly enter the warehouse, and the gas flow after separation can return to the main channel, so that a cyclone separator and a pulse dust collector do not need to be arranged separately when the material is unloaded in the branch channel, the equipment investment is reduced, and the civil engineering investment is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of powder pneumatic conveying, in particular to a material-gas separation valve. BACKGROUND

[0002] The existing powder pneumatic conveying is provided with a double-way valve on the main line, and when the branch line needs to be unloaded, the double-way valve is switched from the main line to the branch line, and unloading is performed at the end of the branch line. The end branch line unloading is divided into two forms, the first one is that the material enters a cyclone separator, the material is settled, and after settlement, the material is discharged through a discharge air lock, and the gas flow containing a small amount of dust enters the centralized air net through the air inlet of the cyclone separator for centralized dust removal; the second one is that the end of the branch line is provided with a bin, and an insertion type pulse dust collector is installed on the top of the bin, the material is settled after entering the bin, and the gas flow containing a small amount of dust is filtered and discharged through the insertion type pulse dust collector on the top of the bin.

[0003] The existing pneumatic conveying system has the following disadvantages for the two unloading modes at the end, the first one is that after the material is settled through the cyclone separator, the gas flow containing a small amount of dust enters the centralized air net, the powder content is about 2%, and after being filtered through the pulse dust collector, the material is collected again, which can only be used in a degraded manner, and this is a waste for flour mills and food factories. The second one is that an insertion type pulse is provided on the top of each bin, the filtered material can fall into the bin and be naturally collected, but a set of dust removal system needs to be provided for each bin, the cost is high, and in addition, the installation height needs to be sufficient, and the cost of civil construction is increased. SUMMARY

[0004] Based on the above problems, the purpose of the present application is to provide a material-gas separation valve, which is installed on the main line instead of the double-way valve, the material-gas separation valve is used for unloading the powder, the gas flow returns to the main line through the channel of the material-gas separation valve, and the purpose of material-gas separation is achieved.

[0005] The present application adopts the following technical scheme:

[0006] The present application provides a material-gas separation valve, which comprises a valve body, a first channel and a second channel are arranged in the valve body, the first channel and the second channel are communicated, and the first channel and the second channel form a T-shaped channel structure after being communicated, a material-gas separation plate is arranged eccentrically in the second channel, and the second channel is divided into a material unloading channel and a gas flow channel by the material-gas separation plate.

[0007] A rotatable valve core is arranged in the valve body, when the valve core is rotated to a horizontal state, the outer edges of the valve core are in contact with the inner walls of the upper ports of the second channel, when the valve core is rotated to a vertical state, the upper outer edge of the valve core is in contact with the inner wall of the first channel, and the lower outer edge of the valve core is in contact with the top of the material-gas separation plate.

[0008] Preferably, one side of the valve core is provided with a rotating shaft, the rotating shaft is fixed with the valve core, both ends of the rotating shaft are rotationally connected to the valve body, and one end of the rotating shaft is power-connected with the driving device.

[0009] Preferably, both sides of the valve body are provided with detachable valve covers, and the rotating shaft is rotationally connected to the valve cover.

[0010] Preferably, the valve cover is mounted on the valve body through bolts.

[0011] Preferably, one of the valve covers is connected with the driving device through a mounting bracket.

[0012] Preferably, the driving device is a pneumatic actuator, and the pneumatic actuator is provided with an electromagnetic valve of a control gas circuit.

[0013] Preferably, both ports of the first channel are provided with pipes, and the pipes are provided with pipe connecting flanges at the ends, and the pipe connecting flanges are connected with the valve body through bolts.

[0014] Preferably, the lower port of the second channel is provided with a discharge port flange.

[0015] Compared with the prior art, the beneficial technical effects of the present application are:

[0016] The present application realizes that the powder directly enters the warehouse when the pneumatic conveying and discharging, and the airflow after separation returns to the main road, so that the cyclone separator and pulse dust collector do not need to be separately arranged when discharging in the branch, the equipment investment is reduced, and the civil investment is saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in combination with the description of the drawings.

[0018] Figure 1 It is a top view structural schematic diagram of the material-gas separation valve of the present application;

[0019] Figure 2 It is Figure 1 a sectional view in A-A direction;

[0020] Figure 3 It is a structural schematic diagram of the material-gas separation valve of the present application in the discharging state;

[0021] Figure 4 It is a structural schematic diagram of the material-gas separation valve of the present application in the transportation state.

[0022] Explanation of reference signs: 1, valve body; 101, first channel; 102, second channel; 102-1, discharge channel; 102-2, gas flow channel; 2, material-gas partition plate; 3, valve core; 4, rotating shaft; 5, driving device; 6, valve cover; 7, mounting bracket; 8, electromagnetic valve; 9, pipeline; 901, pipeline connecting flange; 10, discharge port flange. DETAILED DESCRIPTION

[0023] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not used to limit the present application.

[0024] It should be noted that the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited. The meaning of "several" is one or more than one, unless otherwise explicitly and specifically limited.

[0025] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] As shown in Figure 1 and 2 , in the present embodiment, a material-gas separation valve is disclosed, which comprises a valve body 1, the valve body 1 is provided with a first channel 101 and a second channel 102, the first channel 101 and the second channel 102 are communicated, and the first channel 101 and the second channel 102 form a T-shaped channel structure after being communicated, and the second channel 102 is eccentrically provided with a material-gas partition plate 2, the material-gas partition plate 2 divides the second channel 102 into a discharge channel 102-1 and a gas flow channel 102-2.

[0027] The valve body 1 is provided with a rotatable valve core 3, when the valve core 3 is rotated to a horizontal state, the outer edge of the valve core 3 is in contact with the inner wall of the upper port of the second channel 102; when the valve core 3 is rotated to a vertical state, the upper outer edge of the valve core 3 is in contact with the inner wall of the first channel 101, and the lower outer edge of the valve core 3 is in contact with the top of the material-gas partition plate 2.

[0028] The material-gas separation valve has two working states:

[0029] A discharge state, such as Figure 3 As shown, in this state, the valve core 3 rotates to a vertical position. At this time, the first channel 101 on the left side of the valve core 3 is connected to the discharge channel 102-1, and the first channel 101 on the right side of the valve core 3 is connected to the airflow channel 102-2. In this state, the mixture of powder and airflow enters the discharge channel 102-1 from the first channel 101 on the left side of the valve core 3. The powder moves directly downward under the action of gravity and inertia, while the airflow bypasses the lower end of the material-air baffle 2 and flows into the airflow channel 102-2, thus achieving material-air separation. The separated airflow then flows out through the first channel 101 on the right side of the valve core 3.

[0030] Another mode of transportation, such as Figure 4 As shown, in this state, the valve core 3 rotates to a horizontal position. At this time, the valve core 3 completely separates the first channel 101 from the second channel 102. In this state, the powder and airflow pass through the material-air separation valve normally, and the material-air separation valve acts as a pipeline.

[0031] In this embodiment, a rotating shaft 4 is provided on one side of the valve core 3. The rotating shaft 4 is fixed to the valve core 3, and both ends of the rotating shaft 4 are rotatably connected to the valve body 1. One end of the rotating shaft 4 is poweredly connected to the driving device 5. In this embodiment, the driving device 5 is a pneumatic actuator. The pneumatic actuator is provided with a solenoid valve 8 for controlling the air circuit. The action of the pneumatic actuator can be controlled by the solenoid valve 8.

[0032] To facilitate maintenance of the internal valve core 3, removable valve covers 6 are provided on both sides of the valve body 1. The valve covers 6 are bolted to the valve body 1, and the end of the rotating shaft 4 is rotatably connected to the valve cover 6 via a bearing structure. The valve cover 6 closest to the drive unit 5 is connected to the drive unit 5 via a mounting bracket 7.

[0033] In this embodiment, both ends of the first channel 101 are provided with pipes 9, and pipe connection flanges 901 are welded to the ends of the pipes 9. The pipe connection flanges 901 are connected to the valve body 1 by bolts.

[0034] A discharge port flange 10 is provided at the lower end of the second channel 102, and the discharge port flange 10 is connected to the hopper below by bolts.

[0035] The material-air separation valve disclosed in this embodiment enables powder to be directly fed into the silo during pneumatic conveying unloading, while the airflow containing a small amount of dust (about 2%) directly enters the main pipeline and returns to the raw material silo, avoiding waste, increasing the value of the powder, and reducing factory losses. When unloading on the branch line, there is no need to set up a separate cyclone separator or pulse dust collector, which reduces equipment investment and saves civil engineering investment.

[0036] The above described embodiments are only to illustrate the preferred modes of the present application, and are not intended to limit the scope of the present application. Any modification and improvement made by those skilled in the art to the technical solutions of the present application without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A material-gas separation valve, characterized in that: The device includes a valve body (1), in which a first channel (101) and a second channel (102) are provided. The first channel (101) and the second channel (102) are connected and form a T-shaped channel structure after the first channel (101) and the second channel (102) are connected. A material-air baffle (2) is eccentrically provided in the second channel (102), and the material-air baffle (2) divides the second channel (102) into a discharge channel (102-1) and an airflow channel (102-2). The valve body (1) is provided with a rotatable valve core (3). When the valve core (3) is rotated to a horizontal state, the outer edge of the valve core (3) is in contact with the inner wall of the upper port of the second channel (102). When the valve core (3) is rotated to a vertical state, the upper outer edge of the valve core (3) is in contact with the inner wall of the first channel (101), and the lower outer edge of the valve core (3) is in contact with the top of the material gas baffle (2). A rotating shaft (4) is provided on one side of the valve core (3). The rotating shaft (4) is fixed to the valve core (3), and both ends of the rotating shaft (4) are rotatably connected to the valve body (1). One end of the rotating shaft (4) is poweredly connected to the drive device (5); The valve body (1) is provided with detachable valve covers (6) on both sides, and the rotating shaft (4) is rotatably connected to the valve covers (6). One of the valve covers (6) is connected to the drive device (5) via a mounting bracket (7).

2. The material-gas separation valve according to claim 1, characterized in that: The valve cover (6) is bolted to the valve body (1).

3. The material-gas separation valve according to claim 1, characterized in that: The drive device (5) is a pneumatic actuator, and the pneumatic actuator is equipped with a solenoid valve (8) for controlling the air path.

4. The material-gas separation valve according to claim 1, characterized in that: Both ends of the first channel (101) are provided with pipes (9), and the ends of the pipes (9) are provided with pipe connection flanges (901), which are connected to the valve body (1) by bolts.

5. The material-gas separation valve according to claim 1, characterized in that: The lower port of the second channel (102) is provided with a discharge port flange (10).

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