Check valve for pneumatic conveying system

Abstract

The utility model relates to a check valve for a pneumatic conveying system, and belongs to the field of mechanical automation equipment. According to the check valve, the arc-shaped flow guide plate is installed at the air inlet end, the airflow direction is effectively guided, airflow smoothly passes through the interior of the valve body, airflow collision and turbulence phenomena are reduced, and therefore the flowing resistance is reduced by about 30%. The guide plate can also uniformly distribute airflow pressure, reduce abrasion of the valve body and prolong the service life by about 50%. In addition, a cleaning spray head is arranged in the valve body, compressed air or other cleaning media are sprayed regularly, internal accumulated dust and impurities are removed, blocking is prevented, and normal opening and closing of the valve are guaranteed. Due to the automatic cleaning function of the cleaning nozzle, the manual cleaning frequency and difficulty are reduced, the maintenance cost is reduced by about 50%, and the dust accumulation and blockage risks are reduced by about 70%. The check valve is further provided with a pressure sensor, airflow pressure is monitored in real time, accurate data are provided, abnormal conditions are found and processed in time, the safety and stability of a system are improved, and energy consumption of the system is reduced by about 25%.

Description

Technical Field

[0001] The utility model relates to the field of mechanical automation equipment, in particular to a check valve for a pneumatic conveying system. Background Art

[0002] There is no guide plate inside the traditional check valve, and the airflow is prone to generate eddies and turbulence when passing through the valve, increasing the flow resistance. This resistance will lead to reduced conveying efficiency and increased energy consumption. There is no internal self-cleaning device, and dust and impurities in the conveying medium are easy to accumulate in the valve body. After long-term operation, dust accumulation will cause the valve to be blocked or stuck, affecting normal operation and increasing maintenance frequency and cost. The traditional check valve does not have a pressure sensor and cannot monitor the pressure changes of the airflow in real time. This may cause the operator to be unable to detect and deal with abnormal pressure in the system in time, increase the risk of system operation, and may cause safety accidents. Today's double check valve (Announcement No.: CN211259760U) has the following disadvantages when in use:

[0003] 1. There is no guide plate inside the traditional check valve, and the airflow is prone to eddy current and turbulence when passing through the valve, which increases the flow resistance. This resistance will lead to reduced conveying efficiency and increased energy consumption.

[0004] 2. There is no internal self-cleaning device, and dust and impurities in the conveying medium are easy to accumulate in the valve body. After long-term operation, dust accumulation will cause the valve to be blocked or stuck, affecting normal operation and increasing maintenance frequency and cost.

[0005] 3. Traditional check valves do not have pressure sensors and cannot monitor the pressure changes of the airflow in real time. This may cause operators to be unable to detect and deal with abnormal pressure in the system in a timely manner, increase the risk of system operation, and may lead to safety accidents. Utility Model Content

[0006] The main purpose of the utility model is to provide a check valve for a pneumatic conveying system, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A check valve for a pneumatic conveying system includes a check valve cavity, a check valve valve switch is installed above the check valve cavity, check valve fixing disks are installed on both sides of the check valve cavity, a clean air inlet pipe is arranged behind the check valve cavity, a guide plate is installed inside the air inlet end of the check valve cavity, and a pressure monitoring sensor is installed below the check valve cavity. A cleaning nozzle is installed at the end of the clean air inlet pipe, a monitoring head is arranged on the pressure monitoring sensor, the monitoring head is arranged inside the check valve cavity, and the cleaning nozzle is arranged inside the check valve cavity. The check valve switch is an electrically controlled switch. The check valve fixing disk is an annular structure and is provided with a plurality of mounting holes. The cleaning nozzle is a multi-directional spray nozzle. The guide plate is an arc-shaped structure. The pressure monitoring sensor is connected to an external control system.

[0009] Preferably, the check valve switch is an electrically controlled switch.

[0010] Preferably, the check valve fixing disk is an annular structure and is provided with a plurality of mounting holes.

[0011] Preferably, the guide plate is an arc-shaped structure.

[0012] Preferably, the fixing plate is provided with fixing bolt holes.

[0013] Preferably, the pressure monitoring sensor is connected to an external control system.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The guide plate is installed at the air inlet end of the check valve and is designed in an arc shape to guide the airflow to flow smoothly through the inside of the valve body. The guide plate can effectively guide the direction of the airflow, allowing the airflow to pass smoothly through the inside of the valve body, reducing the collision and turbulence of the airflow in the valve body. Due to the lack of a guide structure inside the traditional check valve, the airflow is prone to form vortices inside the valve body after entering, which will significantly increase the flow resistance. The presence of the guide plate can break the vortex and reduce the flow resistance. The guide plate makes the pressure distribution of the airflow more uniform when passing through the valve body, reduces the wear of the valve body caused by excessive local pressure, and extends the service life of the valve.

[0016] 2. The cleaning nozzle is installed inside the check valve. It can remove dust and impurities inside the valve body by regularly spraying compressed air or other cleaning media. The cleaning nozzle can be started regularly or as needed to remove dust and impurities inside the valve body by spraying high-pressure airflow to prevent them from accumulating inside the valve body. The regular cleaning effect of the cleaning nozzle can prevent impurities from accumulating in the valve body, avoid clogging, and ensure the normal opening and closing of the valve. The automatic cleaning function of the cleaning nozzle reduces the frequency and difficulty of manual cleaning, reduces maintenance costs, and increases the continuous operation time of the system. By keeping the inside of the valve body clean, the wear of impurities on the valve body and sealing surface can be reduced, and the service life of the check valve can be extended.

[0017] 3. The pressure sensor converts the gas pressure into an electrical signal to monitor and display the pressure changes of the airflow in real time. Commonly used pressure sensors include resistance strain gauges, piezoelectric sensors, and capacitive sensors, which measure pressure by sensing the deformation of the element or the change of the electrical signal. By adding a pressure sensor, the pressure of the airflow can be monitored in real time, providing accurate pressure data, helping operators to promptly detect and handle abnormal pressure in the system, and enhancing the safety and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a side schematic diagram of the utility model;

[0020] Figure 3 It is a cross-sectional view of the utility model;

[0021] In the figure: 1. Check valve cavity; 2. Pressure monitoring sensor; 3. Check valve fixing plate; 4. Check valve valve switch; 5. Cleaning air intake pipe; 6. Cleaning nozzle; 7. Guide plate; 8. Monitoring head. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example

[0026] See also Figure 1-3 , the utility model provides a technical solution:

[0027] A check valve for a pneumatic conveying system includes a check valve cavity 1, a check valve valve switch 4 is installed above the check valve cavity 1, check valve fixed disks 3 are installed on both sides of the check valve cavity 1, a clean air inlet pipe 5 is arranged behind the check valve cavity 1, a guide plate 7 is installed inside the air inlet end of the check valve cavity 1, and a pressure monitoring sensor 2 is installed below the check valve cavity 1. A cleaning nozzle 6 is installed at the end of the clean air inlet pipe 5, a monitoring head 8 is arranged on the pressure monitoring sensor 2, the monitoring head 8 is arranged inside the check valve cavity 1, and the cleaning nozzle 6 is arranged inside the check valve cavity 1. The check valve switch 4 is an electrically controlled switch. The check valve fixed disk 3 is an annular structure and is provided with a plurality of mounting holes. The cleaning nozzle 6 is a multi-directional spray nozzle. The guide plate 7 is an arc-shaped structure. The pressure monitoring sensor 2 is connected to an external control system.

[0028]

[0029] By comparing the above table, it can be seen that the utility model installs the guide plate at the air inlet end of the check valve, and is designed to be arc-shaped to guide the airflow to flow smoothly through the inside of the valve body. The guide plate can effectively guide the direction of the airflow, so that the airflow passes smoothly through the inside of the valve body, and reduce the collision and turbulence of the airflow in the valve body. Due to the lack of a guide structure inside the traditional check valve, the airflow is easy to form a vortex inside the valve body after entering, which will significantly increase the flow resistance. The existence of the guide plate can break the vortex, reduce the flow resistance, and reduce the flow resistance by about 30%. The guide plate makes the pressure distribution of the airflow more uniform when passing through the valve body, reduces the wear of the valve body caused by excessive local pressure, and extends the service life of the valve, increasing the service life by about 50%. The cleaning nozzle is installed inside the check valve, and the dust and impurities inside the valve body are removed by regularly spraying compressed air or other cleaning media. The cleaning nozzle can be started regularly or as needed, and the dust and impurities inside the valve body are removed by spraying high-pressure airflow to prevent them from accumulating inside the valve body. The regular cleaning of the cleaning nozzle can prevent the accumulation of impurities in the valve body, avoid the occurrence of clogging, and ensure the normal opening and closing of the valve. The automatic cleaning function of the cleaning nozzle reduces the frequency and difficulty of manual cleaning, reduces maintenance costs by about 50%, increases the continuous operation time of the system, and reduces the risk of dust accumulation and clogging by about 70%. By keeping the inside of the valve body clean, the wear of impurities on the valve body and sealing surface can be reduced, and the service life of the check valve can be extended. The pressure sensor monitors and displays the pressure changes of the airflow in real time by converting the gas pressure into an electrical signal. Commonly used pressure sensors include resistance strain gauges, piezoelectric sensors, and capacitive sensors, which measure pressure by sensing the deformation of the element or the change of the electrical signal. By adding a pressure sensor, the pressure of the airflow can be monitored in real time, providing accurate pressure data, helping operators to promptly detect and deal with abnormal pressure in the system, enhancing the safety and stability of the system, and reducing the system energy consumption by about 25%.

[0030] The pressure sensor uses Honeywell's TLE series pressure sensor. The TLE series pressure sensor monitors and displays the pressure changes of the airflow in real time by converting the gas pressure into an electrical signal. Commonly used pressure sensors include resistance strain gauges, piezoelectric sensors, and capacitive sensors, which measure pressure by sensing the deformation of the element or the change of the electrical signal. The TLE series pressure sensor can monitor the pressure of the airflow in real time, provide accurate pressure data, and help operators to promptly discover and deal with abnormal pressure in the system, thereby enhancing the safety and stability of the system. The pressure sensor is sturdy in design and can work stably for a long time under harsh environmental conditions. It is also waterproof and dustproof, which prolongs the service life of the equipment and reduces the maintenance frequency and cost. The installation and commissioning process of the pressure sensor is simple, and it can be easily integrated into the existing control system, which simplifies the installation and commissioning process of the equipment, reduces the initial investment and operation complexity, and improves the convenience of operation of the entire system. The sensor can transmit pressure data in real time and connect seamlessly with the control system to ensure real-time monitoring and automatic adjustment of pressure, thereby improving the safety and stability of the system.

[0031] The above description of the utility model shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A check valve for a pneumatic conveying system, comprising a check valve chamber (1), characterized in that: A check valve switch (4) is installed above the check valve cavity (1), check valve fixing plates (3) are installed on both sides of the check valve cavity (1), a clean air intake pipe (5) is arranged behind the check valve cavity (1), a guide plate (7) is installed inside the air intake end of the check valve cavity (1), a pressure monitoring sensor (2) is installed below the check valve cavity (1), a cleaning nozzle (6) is installed at the end of the clean air intake pipe (5), a monitoring head (8) is arranged on the pressure monitoring sensor (2), the monitoring head (8) is arranged inside the check valve cavity (1), and the cleaning nozzle (6) is arranged inside the check valve cavity (1).

2. A check valve for a pneumatic conveying system according to claim 1, characterized in that: The check valve switch (4) is an electrically controlled switch.

3. A check valve for a pneumatic conveying system according to claim 1, characterized in that: The check valve fixing disk (3) is an annular structure and is provided with a plurality of mounting holes.

4. A check valve for a pneumatic conveying system according to claim 1, characterized in that: The cleaning nozzle (6) is a multi-directional spray nozzle.

5. A check valve for a pneumatic conveying system according to claim 1, characterized in that: The guide plate (7) is an arc-shaped structure.

6. A check valve for a pneumatic conveying system according to claim 1, characterized in that: The pressure monitoring sensor (2) is connected to an external control system.

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