A powder conveying tubular chain system

Abstract

This invention provides a powder conveying pipe chain system, including a tank truck unloading conveyor line, a ton bag feeding conveyor line, a rotary control valve, a feeding hopper, and an elevator pipe chain conveyor. The rotary control valve is connected between the tank truck feeding pipe and the feeding hopper. When the rotary control valve malfunctions, the ton bag feeding conveyor line can still operate normally, thereby maintaining continuous production. Therefore, this invention provides a pipe chain system that can achieve two feeding methods without interference, and its operability and stability are better than existing solutions.

Description

Technical Field

[0001] This utility model relates to the field of powder conveying technology, and in particular to a powder conveying tube chain system. Background Technology

[0002] As a key piece of equipment in industries such as building materials, metallurgy, and chemicals, the operational stability and safety of powder conveying systems are of paramount importance.

[0003] In typical chemical applications, the system needs to be compatible with both large-volume tank truck transport and small-volume bag feed. Current designs typically converge both feed lines into a single feed hopper, managed by a rotary control valve located below the hopper. This "single-point control" design has a significant reliability flaw: the rotary control valve is highly susceptible to motor stalling and overload due to material blockage, making it a frequent point of failure. If this valve malfunctions, the entire feeding process, whether using tank trucks or bag feed, will be completely interrupted, leading to production stoppage and failing to meet the basic requirements of continuous production.

[0004] In addition, when using a lifting tube chain conveyor to lift powder materials, phenomena such as chain tube blockage causing current overload often occur, leading to line tripping and affecting production.

[0005] Furthermore, the system's safety design urgently needs improvement. When conveying low-toxicity but flammable chemical powders such as purified terephthalic acid (PTA), the dust mixed with air poses a risk of combustion or even explosion upon contact with an ignition source. Existing systems have inadequate explosion-proof design, posing a potential safety threat to personnel and equipment.

[0006] Therefore, optimizing system reliability to avoid production downtime caused by single points of failure and improving explosion-proof safety in dusty environments are the core issues that urgently need to be addressed in the current design. Utility Model Content

[0007] Therefore, in response to at least one of the above problems, this utility model provides a powder conveying tube chain system.

[0008] This utility model is achieved using the following solution:

[0009] This utility model proposes a powder conveying tube chain system, comprising:

[0010] A tank truck unloading conveyor line, comprising interconnected tank truck unloading ports and tank truck feeding pipes;

[0011] A ton bag feeding conveyor line, wherein the ton bag feeding conveyor line has a ton bag feeding pipe;

[0012] A lifting tube chain conveyor, the lifting tube chain conveyor including a chain tube inlet and a chain tube outlet;

[0013] A feeding hopper, having a feeding inlet and a feeding outlet, wherein the tank truck feeding pipe and the ton bag feeding pipe are both connected to the feeding inlet of the feeding hopper, and the feeding outlet of the feeding hopper is connected to the chain pipe inlet; and

[0014] A rotary control valve is connected between the tank truck feeding pipe and the feeding hopper.

[0015] In one embodiment, the rotary control valve includes a motor, and the motor of the rotary control valve is controlled by a frequency converter.

[0016] In one embodiment, the system further includes a central control display module. The signal from the frequency converter is connected to the central control display module, which has a display and control interface for displaying and adjusting the frequency conversion data, speed, and operating current of the motor of the rotary control valve.

[0017] In one embodiment, the motor of the rotary control valve is a dust explosion-proof motor.

[0018] In one embodiment, the lifting tubular chain conveyor includes a tubular chain power assembly equipped with an improved parallel shaft helical gear reducer motor.

[0019] The technical solution provided by this utility model has the following technical effects:

[0020] This invention provides a powder conveying pipe chain system, including a tank truck unloading conveyor line, a ton bag feeding conveyor line, a rotary control valve, a feeding hopper, and an elevator pipe chain conveyor. The rotary control valve is connected between the tank truck feeding pipe and the feeding hopper. When the rotary control valve malfunctions, the ton bag feeding conveyor line can still operate normally, thereby maintaining continuous production. Therefore, this invention provides a pipe chain system that can achieve two feeding methods without interference, and its operability and stability are better than existing solutions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the powder conveying pipe chain system according to an embodiment of the present invention. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, this utility model provides a powder conveying chain system 1 for conveying powders, such as purified terephthalic acid (PTA). The powder conveying chain system 1 includes a tank truck unloading conveyor line 10, a ton bag feeding conveyor line 20, a rotary control valve 30, a feeding hopper 40, and an elevator chain conveyor 50.

[0025] The tank truck unloading conveyor line 10 is used for unloading and conveying powder from tank trucks. The tank truck unloading conveyor line 10 includes interconnected tank truck unloading ports 11 and tank truck feeding pipes 12. Tank trucks are used for transporting large quantities of powder, typically 30-40 tons at a time. The ton bag feeding conveyor line 20 is used for feeding and conveying ton bags 21, each typically weighing around 1 ton, suitable for small to medium batch feeding. The ton bag feeding conveyor line 20 has a ton bag feeding pipe 22. Both the tank truck feeding pipe 12 and the ton bag feeding pipe 22 are connected to the feeding inlet of the feeding hopper 40, and the lower feeding outlet of the feeding hopper 40 is connected to the chain pipe inlet 51 of the elevator chain conveyor 50. To improve the overall airtightness of the pipeline, the feeding hopper 40 can be a three-way structure. The elevator chain conveyor 50 is equipped with a chain power assembly 52 at the top, which provides power to lift and transport materials from the lower chain inlet 51 to the higher chain outlet 53. In use, either the tank truck unloading conveyor line 10 or the ton bag feeding conveyor line 20 can be selected to transport powder, and the powder can be lifted by the elevator chain conveyor 50. Of course, in some other embodiments, other lifting devices can also be used to lift the powder.

[0026] In this embodiment, the rotary control valve 30 is connected between the tank truck feeding pipe 12 and the feeding hopper 40, and the rotary control valve 13 is used to control the unloading speed, thereby adjusting the unloading speed according to the specific needs of the production line. Compared with the prior art, where the rotary control valve is located below the outlet of the feeding hopper, if the rotary control valve 13 fails, both the tank truck unloading conveyor line 10 and the ton bag feeding conveyor line 20 will be affected and unable to operate, thus failing to guarantee continuous production. In this embodiment, the rotary control valve 30 is located between the tank truck feeding pipe 12 and the feeding hopper 40, and the rotary control valve 30 is only used to control the tank truck unloading. Because the tank truck unloading volume is large and the unloading speed is fast, the conveying load on the subsequent lifting pipe chain conveyor 50 is large, so the rotary control valve 30 is needed to control the unloading speed. When the rotary control valve 13 fails, the ton bag feeding conveyor line 20 can still operate normally, thereby maintaining continuous production. The slow material feeding of the ton bag feeding conveyor line 20 results in a smaller load on the tubular chain system, thus eliminating the need for rotary control valve 30. Therefore, this embodiment provides a tubular chain system that allows for two feeding methods to operate independently, offering better operability and stability compared to existing solutions.

[0027] The rotary control valve 30 includes a motor. To achieve more precise control of the rotary control valve 30, in this embodiment, a frequency converter is provided to connect to and control the motor of the rotary control valve 13, thereby maintaining a stable discharge flow rate through the frequency converter. Furthermore, in this embodiment, a central control display module is provided. The signal from the frequency converter is input to the central control display module, and the frequency conversion data, speed, and operating current of the rotary control valve 30 motor are fed back to the central control display module. The central control display module has a display and control interface for displaying and adjusting the frequency conversion data, speed, and operating current of the rotary control valve 30 motor. The discharge speed can be adjusted at any time through the display and control interface of the central control display module, greatly facilitating operation.

[0028] During the feeding process using the tank truck unloading conveyor line 10, the elevator chain conveyor 50 is prone to problems such as chain blockage causing current overload. In this embodiment, the chain power component 52 of the elevator chain conveyor 50 is equipped with an improved parallel shaft helical gear reducer motor. This parallel shaft helical gear reducer motor increases the output torque of the reducer while maintaining the same transmission ratio, thereby reducing the occurrence of blockage and other faults, and solving the problem of the elevator chain conveyor 50 tripping due to overload, which affects production.

[0029] Furthermore, the motor of the rotary control valve 30 is located in an environment prone to dust explosions, especially when the motor is in a confined space such as a pit, where the risk is even higher. Therefore, in this embodiment, the motor of the rotary control valve 30 is a dust explosion-proof motor, which can increase the explosion-proof capability of the rotary control valve 30 and improve the system safety.

[0030] By adjusting the position of the rotary control valve 30, adding a frequency converter and making explosion-proof improvements, and by using an improved parallel shaft helical gear reducer motor for the chain power assembly 52, the overall safe and stable operation of the powder conveying chain system 1 can be ensured.

[0031] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A powder conveying tubular chain system, characterized in that, include: A tank truck unloading conveyor line, comprising interconnected tank truck unloading ports and tank truck feeding pipes; A ton bag feeding conveyor line, wherein the ton bag feeding conveyor line has a ton bag feeding pipe; The feeding hopper has a feeding inlet and a feeding outlet, and the tank truck feeding pipe and the ton bag feeding pipe are both connected to the feeding inlet of the feeding hopper; as well as A rotary control valve is connected between the tank truck feeding pipe and the feeding hopper.

2. The powder conveying chain system according to claim 1, characterized in that: The rotary control valve includes a motor, and the motor of the rotary control valve is controlled by a frequency converter.

3. The powder conveying chain system according to claim 2, characterized in that: It also includes a central control display module, the signal of the frequency converter is connected to the central control display module, and the central control display module has a display and control interface for displaying and adjusting the frequency conversion data, speed and operating current of the motor of the rotary control valve.

4. The powder conveying chain system according to claim 2, characterized in that: The motor of the rotary control valve is a dust explosion-proof motor.

5. The powder conveying chain system according to claim 1, characterized in that: It also includes a lifting tube chain conveyor, which includes a chain tube inlet and a chain tube outlet, and the feeding outlet of the feeding hopper is connected to the chain tube inlet.

6. The powder conveying chain system according to claim 5, characterized in that: The lifting tubular chain conveyor includes a tubular chain power assembly, which is equipped with a parallel shaft helical gear reduction motor.

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