Anti-blocking negative pressure dilute phase conveying system discharge valve

Abstract

The utility model relates to the technical field of pneumatic conveying, in particular to an anti-blocking negative pressure dilute phase conveying system discharging valve which comprises a valve body and a discharging pipe, the discharging pipe is connected to the lower end of the valve body in a penetrating mode, the side wall of the discharging pipe is connected with an air path pipe in a penetrating mode, a fence is fixedly installed in the discharging pipe, and a dustproof net is fixedly installed at one end of the air path pipe. A fixing frame is fixedly installed in the gas circuit pipe, a rotating shaft is rotationally installed at the lower end of the fixing frame, a cleaning scraper is fixedly installed on the periphery of the rotating shaft and makes contact with the surface of the dustproof net, and fan blades are fixedly installed on the periphery of the rotating shaft and located between the fixing frame and the dustproof net; the air path pipe is connected with an air path in a dilute phase conveying system, certain negative pressure is provided for the interior of the discharging pipe, the blocking situation is reduced, the rotating shaft is driven to rotate through the fan blades by means of flowing air in the air path pipe, and therefore the surface of the dustproof net is cleaned through the cleaning scraper blade, and the dustproof net is prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic conveying technology, and in particular to a discharge valve for a negative pressure dilute phase conveying system that prevents clogging. Background Technology

[0002] The negative pressure dilute phase conveying system uses negative pressure airflow to transport powdered materials from one point or multiple points in bulk to a higher point. Finally, the airflow and dust are separated by a cyclone dust collector, and the material is discharged into the silo that needs to be conveyed through a discharge valve. It is widely used in chemical, food, and pharmaceutical industries.

[0003] Currently, the discharge of powder materials is usually done using a slide gate valve. In a negative pressure dilute phase conveying system, the powder material is discharged into the silo after being removed by a cyclone dust collector. The reduced airflow velocity can easily lead to the accumulation of powder material and blockage.

[0004] Therefore, to address the above problems, a non-clogging negative pressure dilute phase conveying system discharge valve can be designed. The lower end of the discharge valve is connected to the air circuit of the conveying system through an air pipe, creating a negative pressure at the lower end of the discharge valve. This allows the material at the valve to pass through quickly through the air pressure, reducing the likelihood of blockages. Utility Model Content

[0005] To overcome the current problem that powder discharge is usually done using a slide gate valve in a negative pressure dilute phase conveying system, the powder is discharged into the silo after being removed by a cyclone dust collector and then discharged through the valve body. The reduced airflow velocity can easily lead to powder accumulation and blockage.

[0006] The technical solution of this utility model is as follows: a discharge valve for a negative pressure dilute phase conveying system that prevents clogging, comprising a valve body, an inlet pipe, and a discharge pipe. The inlet pipe is connected to the upper end of the valve body, and the discharge pipe is connected to the lower end of the valve body. An air passage pipe is connected to the side wall of the discharge pipe. A baffle is fixedly installed inside the discharge pipe, located outside the air passage pipe. The upper end of the baffle is inclined. A dustproof net is fixedly installed at one end of the air passage pipe. A fixing frame is fixedly installed inside the air passage pipe. A rotating shaft is rotatably installed at the lower end of the fixing frame. The rotating shaft passes through the dustproof net and is rotatably connected to the dustproof net. A cleaning scraper is fixedly installed around the rotating shaft, and the cleaning scraper contacts the surface of the dustproof net. A fan blade is fixedly installed around the rotating shaft, located between the fixing frame and the dustproof net.

[0007] Preferably, the valve body is connected to the output end of the dust collector via a feed pipe, the valve body is connected to the receiving hopper via a discharge pipe, and the discharge pipe is connected to the air path in the dilute phase conveying system. This provides a certain negative pressure inside the discharge pipe, allowing the material at the valve body to pass through quickly under air pressure, reducing the risk of blockage. A barrier is installed to shield one end of the air path to prevent material entering the discharge pipe from being directly sucked away. The inclined design of the upper end of the barrier prevents material accumulation. A dustproof net prevents a small amount of material passing through the barrier from entering the air path. A fixed frame supports and installs the rotating shaft. A fan blade uses the air flowing in the air path to drive the rotating shaft, which in turn drives the cleaning scraper to clean the surface of the dustproof net, preventing blockage.

[0008] Preferably, a receiving ring is fixedly installed at the connection between the valve body and the feed pipe, and the inner ring of the receiving ring has a tapered structure.

[0009] Preferably, both the feed pipe and the discharge pipe are equipped with corrugated compensation sections, and a vibration motor is fixedly installed on the periphery of the valve body.

[0010] Preferably, a mounting bracket is fixedly installed on one side of the valve body, and an actuator is fixedly installed on one side of the mounting bracket.

[0011] Preferably, a guide frame is fixedly installed inside the mounting bracket, and a valve plate is slidably connected inside the guide frame. The valve plate is slidably connected to the valve body and is located below the receiving ring. A connecting frame is fixedly installed at one end of the valve plate and is fixedly connected to the output end of the actuator.

[0012] Preferably, a motor is fixedly mounted on the upper end of the mounting bracket, the coupler passes through the side wall of the feed pipe, the coupler is fixedly connected to the feed pipe, and the output end of the motor is fixedly connected to the input end of the coupler.

[0013] Preferably, the output end of the coupler is fixedly connected to a mounting shaft, and a spiral blade is fixedly mounted on the periphery of the mounting shaft, with the spiral blade located inside the feed pipe.

[0014] The beneficial effects of this utility model are:

[0015] The valve body is connected to the output end of the dust collector via the feed pipe, and to the receiving hopper via the discharge pipe. It is also connected to the air circuit of the dilute phase conveying system via the air circuit, thus providing a certain negative pressure inside the discharge pipe. This air pressure propels the material through the valve body quickly, reducing the risk of blockage. One end of the air circuit is shielded by a barrier to prevent material entering the discharge pipe from being directly sucked away. The inclined design of the top of the barrier prevents material accumulation. A dustproof net prevents small amounts of material that have passed through the barrier from entering the air circuit. A fixed frame supports and installs the rotating shaft. A fan blade uses the airflow in the air circuit to drive the rotating shaft, which in turn rotates the cleaning scraper to clean the surface of the dustproof net, preventing blockage and ensuring that the air circuit provides a stable negative pressure inside the discharge pipe, reducing the occurrence of valve body blockage. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the discharge valve of the anti-clogging negative pressure dilute phase conveying system of this utility model.

[0017] Figure 2 The diagram shown is a two-dimensional structural schematic of the discharge valve of the anti-clogging negative pressure dilute phase conveying system of this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the discharge valve of the anti-clogging negative pressure dilute phase conveying system of this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural diagram of the discharge valve and discharge pipe of the anti-clogging negative pressure dilute phase conveying system of this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional cross-sectional view of the discharge valve and discharge pipe of the anti-clogging negative pressure dilute phase conveying system of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Feed pipe; 201. Receiving ring; 3. Discharge pipe; 301. Air pipe; 302. Enclosure; 303. Dustproof net; 304. Fixing frame; 305. Rotating shaft; 306. Cleaning scraper; 307. Fan blade; 401. Corrugated compensation section; 402. Vibration motor; 501. Mounting bracket; 502. Actuator; 503. Valve plate; 504. Guide frame; 505. Connecting frame; 601. Motor; 602. Coupler; 603. Mounting shaft; 604. Spiral blade. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment: a discharge valve for a negative pressure dilute phase conveying system to prevent clogging, comprising a valve body 1, an inlet pipe 2, and a discharge pipe 3. The inlet pipe 2 is connected to the upper end of the valve body 1, and the discharge pipe 3 is connected to the lower end of the valve body 1. An air passage pipe 301 is connected to the side wall of the discharge pipe 3. A retaining wall 302 is fixedly installed inside the discharge pipe 3, located around the air passage pipe 301. The upper end of the retaining wall 302 is inclined. One end of the air passage pipe 301 is fixedly installed with... A fixed bracket 304 is fixedly installed inside the dustproof net 303 and the air duct 301. A rotating shaft 305 is rotatably installed at the lower end of the fixed bracket 304, passing through the dustproof net 303 and rotatably connected to it. A cleaning scraper 306 is fixedly installed around the rotating shaft 305, contacting the surface of the dustproof net 303. A fan blade 307 is fixedly installed around the rotating shaft 305, located between the fixed bracket 304 and the dustproof net 303. The valve body 1 is connected to the output end of the dust collector via the feed pipe 2, and the valve body 1 is connected to the receiving hopper via the discharge pipe 3. The air passage 301 is connected to the air passage in the dilute phase conveying system, thus providing a certain negative pressure inside the discharge pipe 3. This air pressure pushes the material at the valve body 1 through quickly, reducing the risk of blockage. A barrier 302 is installed to shield one end of the air passage 301, preventing material entering the discharge pipe 3 from being directly sucked away. The inclined upper end of the barrier 302 prevents material accumulation. A dustproof net 303 prevents a small amount of material passing through the barrier 302 from entering the air passage 301. A fixing frame 304 supports and installs the rotating shaft 305. A fan blade 307 uses the air flowing in the air passage 301 to drive the rotating shaft 305 to rotate, thereby rotating the cleaning scraper 306 to clean the surface of the dustproof net 303, preventing blockage.

[0024] Please see Figure 2 and Figure 3In this embodiment, a receiving ring 201 is fixedly installed at the connection between the valve body 1 and the feed pipe 2. The inner ring of the receiving ring 201 has a tapered structure. By setting the receiving ring 201, the material entering the valve body 1 can be guided to prevent the material from accumulating. Corrugated compensation sections 401 are provided on the periphery of both the feed pipe 2 and the discharge pipe 3. A vibration motor 402 is fixedly installed on the periphery of the valve body 1. By setting the vibration motor 402, the valve body 1 can be driven to vibrate, thereby effectively preventing the material from accumulating or adhering to the side walls of the valve body 1, the feed pipe 2, and the discharge pipe 3. The corrugated compensation section 401 can compensate for the generated vibration. A mounting bracket 501 is fixedly installed on one side of the valve body 1, and a handle is fixedly installed on one side of the mounting bracket 501. Actuator 502; A guide frame 504 is fixedly installed inside the mounting bracket 501. A valve plate 503 is slidably connected inside the guide frame 504. The valve plate 503 is slidably connected to the valve body 1. The valve plate 503 is located below the receiving ring 201. A connecting frame 505 is fixedly installed at one end of the valve plate 503. The connecting frame 505 is fixedly connected to the output end of the actuator 502. The actuator 502 and the guide frame 504 are installed by setting the mounting bracket 501. The valve is installed and guided by setting the guide frame 504. The valve plate 503 and the actuator 502 are connected and fixed by setting the connecting frame 505. The actuator 502 can drive the valve plate 503 to slide along the guide frame 504, thereby realizing the opening and closing of the valve.

[0025] Please see Figure 1 and Figure 2 In this embodiment, a motor 601 is fixedly mounted on the upper end of the mounting bracket 501. A coupler 602 penetrates the side wall of the feed pipe 2 and is fixedly connected to the feed pipe 2. The output end of the motor 601 is fixedly connected to the input end of the coupler 602. A mounting shaft 603 is fixedly connected to the output end of the coupler 602. A spiral blade 604 is fixedly mounted on the periphery of the mounting shaft 603 and is located inside the feed pipe 2. By setting the motor 601 to drive the mounting shaft 603 to rotate through the coupler 602, the spiral blade 604 is driven to rotate to agitate the material in the feed pipe 2 and prevent material accumulation and blockage. The coupler 602 can protect the motor 601 and prevent it from being overloaded and damaged.

[0026] During operation, the valve body 1 is connected to the output end of the dust collector via the feed pipe 2, and the valve body 1 is connected to the receiving hopper via the discharge pipe 3. The air passage 301 is connected to the air passage in the dilute phase conveying system, thereby providing a certain negative pressure inside the discharge pipe 3. The air pressure pushes the material at the valve body 1 through quickly, reducing the possibility of blockage. The enclosure 302 is used to shield and protect one end of the air passage 301 to prevent the material entering the discharge pipe 3 from being directly sucked away by the air passage 301. The inclined setting of the upper end of the enclosure 302 can prevent material accumulation. By setting the dustproof net 303, a small amount of material passing through the enclosure 302 can be prevented from entering the air passage 301. The fixed frame 304 is used to support and install the rotating shaft 305. The fan blade 307 uses the air flowing in the air passage 301 to drive the rotating shaft 305 to rotate, thereby driving the cleaning scraper 306 to rotate and clean the surface of the dustproof net 303, preventing the dustproof net 303 from becoming blocked.

[0027] The actuator 502 can drive the valve plate 503 to slide along the guide frame 504, thereby realizing the opening and closing of the valve. After the valve is opened, the vibration motor 402 can drive the valve body 1 to vibrate, which can effectively prevent materials from accumulating or adhering to the side walls of the valve body 1, the feed pipe 2 and the discharge pipe 3. The corrugated compensation section 401 can compensate for the generated vibration.

[0028] The motor 601 can drive the mounting shaft 603 to rotate via the coupler 602, thereby driving the spiral blade 604 to rotate and agitate the material in the feed pipe 2 to prevent material accumulation and blockage.

[0029] Through the above steps, the air passage 301 is connected to the air passage in the dilute phase conveying system, providing a certain negative pressure inside the discharge pipe 3 to reduce the occurrence of blockages. One end of the air passage 301 is shielded and protected by the enclosure 302. The dustproof net 303 can prevent a small amount of material passing through the enclosure 302 from entering the air passage 301. The fan blade 307 uses the air flowing in the air passage 301 to drive the rotating shaft 305 to rotate, thereby cleaning the surface of the dustproof net 303 by the cleaning scraper 306 to prevent the dustproof net 303 from becoming blocked. This solves the problem that currently, the discharge of powder is usually done using a slide valve. In the negative pressure dilute phase conveying system, the powder is discharged into the silo after being dusted by a cyclone dust collector and then discharged through the valve body 1. The reduced airflow speed can easily lead to the accumulation of powder and blockage.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A non-clogging negative pressure dilute phase conveying system discharge valve comprising a valve body (1); characterized in that: It also includes a feed pipe (2) and a discharge pipe (3). The feed pipe (2) is connected to the upper end of the valve body (1), and the discharge pipe (3) is connected to the lower end of the valve body (1). An air passage pipe (301) is connected to the side wall of the discharge pipe (3). A baffle (302) is fixedly installed inside the discharge pipe (3). The baffle (302) is located outside the air passage pipe (301). The upper end of the baffle (302) is inclined. A dustproof net (303) is fixedly installed at one end of the air passage pipe (301). The interior of the air passage pipe (301) is fixedly... A fixed frame (304) is fixedly installed. A rotating shaft (305) is rotatably installed at the lower end of the fixed frame (304). The rotating shaft (305) passes through the dustproof net (303). The rotating shaft (305) is rotatably connected to the dustproof net (303). A cleaning scraper (306) is fixedly installed on the outer periphery of the rotating shaft (305). The cleaning scraper (306) is in contact with the surface of the dustproof net (303). A fan blade (307) is fixedly installed on the outer periphery of the rotating shaft (305). The fan blade (307) is located between the fixed frame (304) and the dustproof net (303).

2. A plug resistant negative pressure, lean phase conveying system discharge valve according to claim 1, characterized in that: A receiving ring (201) is fixedly installed at the connection between the valve body (1) and the feed pipe (2). The inner ring of the receiving ring (201) is a tapered structure with a gradually narrowing shape.

3. A plug resistant negative pressure, dilute phase conveying system outlet valve according to claim 1, wherein: Both the feed pipe (2) and the discharge pipe (3) are provided with corrugated compensation sections (401), and a vibration motor (402) is fixedly installed on the periphery of the valve body (1).

4. A plug resistant negative pressure, lean phase conveying system discharge valve according to claim 1, wherein: A mounting bracket (501) is fixedly installed on one side of the valve body (1), and an actuator (502) is fixedly installed on one side of the mounting bracket (501).

5. A plug resistant negative pressure, lean phase conveying system discharge valve according to claim 4, wherein: The mounting bracket (501) has a guide frame (504) fixedly installed inside. The guide frame (504) has a valve plate (503) slidably connected inside. The valve plate (503) is slidably connected to the valve body (1). The valve plate (503) is located below the receiving ring (201). A connecting frame (505) is fixedly installed at one end of the valve plate (503). The connecting frame (505) is fixedly connected to the output end of the actuator (502).

6. A plug resistant negative pressure, lean phase conveying system discharge valve according to claim 4, wherein: The upper end of the mounting bracket (501) is fixedly mounted with a motor (601), and the coupler (602) passes through the side wall of the feed pipe (2). The coupler (602) is fixedly connected to the feed pipe (2), and the output end of the motor (601) is fixedly connected to the input end of the coupler (602).

7. A plug resistant negative pressure, lean phase conveying system discharge valve according to claim 6, characterized in that: The output end of the coupler (602) is fixedly connected to the mounting shaft (603), and a spiral blade (604) is fixedly installed on the periphery of the mounting shaft (603). The spiral blade (604) is located inside the feed pipe (2).

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