Discharging device

Abstract

A discharging device comprises a valve body, a first straight-through channel and a first bypass channel are arranged in the valve body, and the discharging device is characterized by further comprising a platinum thermal resistor, a heater, a pressure sensor, a valve seat, a valve rod, a limiting pin, a heat preservation plate and a sealing gasket. The valve seat is installed on the valve body in a threaded mode, the valve rod sequentially penetrates through the valve seat and the sealing gasket to be rotatably installed on the valve seat, a limiting groove and a limiting hole are correspondingly formed in the upper end of the valve seat and the upper end of the valve rod respectively, and the limiting pin is installed on the limiting groove and the limiting hole. The lower end of the valve rod is provided with a second straight-through channel and a second bypass channel at the junction of the first straight-through channel and the first bypass channel. The plurality of platinum thermal resistors, the heater and the insulation board are mounted on the valve body in different areas; and the pressure sensor is arranged at the outlet of the first straight channel. The device has the advantages that the structure is simple, the practicability is high, the flow direction of the melt can be switched through manual operation, and the straight-through or bypass discharging function is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of nonwoven fabric production equipment, specifically to a discharge device between an edge material screw extruder and a spunbond main screw extruder, which can switch the melt flow direction by manual operation to achieve direct or bypass discharge function. Background Technology

[0002] In the nonwoven fabric production process, the melt flow between the edge screw extruder and the main screw extruder typically requires flow direction control based on process requirements. Existing technologies often rely on electric or pneumatic drives for melt flow switching, resulting in complex structures, high maintenance costs, and slow response times. Furthermore, current valve designs struggle to quickly switch between direct and bypass states, limiting production efficiency and hindering flexibility in handling unexpected situations. Therefore, a simple, easy-to-operate manual switching device is urgently needed to improve production flexibility and reliability. Summary of the Invention

[0003] The purpose of this utility model is to address the problems in the related technologies by proposing a discharge device to overcome the aforementioned technical problems existing in the existing related technologies.

[0004] The technical solution of this utility model is as follows: This utility model includes a valve body, which has a first through channel and a first bypass channel built into it. It is characterized by further including a platinum resistance thermometer, a heater, a pressure sensor, a valve seat, a valve stem, a limiting pin, a heat insulation plate, and a sealing gasket. The valve seat is threaded onto the valve body. The valve stem passes through the valve seat and the sealing gasket sequentially and is rotatably mounted on the valve seat. Limit grooves and limiting holes are respectively provided at the upper ends of the valve seat and the valve stem, and the limiting pin is installed on the limiting grooves and limiting holes. A second through channel and a second bypass channel are provided at the lower end of the valve stem at the intersection of the first through channel and the first bypass channel. Several platinum resistance thermometers, heaters, and heat insulation plates are installed on the valve body in designated areas. The pressure sensor is located at the outlet of the first through channel. During assembly, the valve body is connected to the outlet of the edge material screw extruder via a flange, and the outlet of the first bypass channel is connected to an external recovery pipe. During operation, the limiting pin restricts the valve stem's rotation angle, ensuring it remains in the correct straight-through or bypass position. When the first and second straight-through channels are connected, the melt is in a straight-through state; when the first and second bypass channels are connected, the melt is in a bypass state. This allows for convenient and flexible switching of the melt flow direction without stopping the machine. Furthermore, the heater and platinum resistance thermometer are linked through a temperature control system to maintain a constant melt temperature and prevent solidification. A pressure sensor monitors the melt pressure in real time to prevent overload. Sealing gaskets prevent melt leakage, and insulation plates prevent heat loss.

[0005] The advantages of this utility model are: simple structure, strong practicality, and the ability to switch the melt flow direction by manual operation to achieve direct or bypass discharge function, thereby improving production flexibility and reliability. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 : Front view of this utility model;

[0008] Figure 2 Left view of this utility model;

[0009] Figure 3 Top view of this utility model;

[0010] Figure 4 : Front view of valve stem;

[0011] Figure 5 Left view of the valve stem;

[0012] Figure 6 : Valve seat front view;

[0013] Figure 7 : Figure 6 AA section view;

[0014] Figure 8 : Schematic diagram of valve body in straight-through state;

[0015] Figure 9 : Schematic diagram of valve body bypass state;

[0016] In the diagram: 1. Valve body, 2. Platinum resistance thermometer, 3. Heater, 4. Pressure sensor, 5. Valve seat, 6. Valve stem, 7. Limit pin, 8. First through channel, 9. Insulation plate, 10. Sealing gasket, 11. First bypass channel, 12. Limit hole, 13. Second through channel, 14. Second bypass channel, 15. Limit groove. Detailed Implementation

[0017] like Figure 1-9As shown, this utility model includes a valve body 1, which has a first through channel 8 and a first bypass channel 11. It is characterized by further including a platinum resistance thermometer 2, a heater 3, a pressure sensor 4, a valve seat 5, a valve stem 6, a limiting pin 7, a heat insulation plate 9, and a sealing gasket 10. The valve seat 5 is threaded onto the valve body 1. The valve stem 6 is rotatably mounted on the valve seat 5, passing through the valve seat 5 and the sealing gasket 10 in sequence. Limiting grooves 15 and limiting holes 12 are respectively provided at the upper ends of the valve seat 5 and the valve stem 6. The limiting pin 7 is installed on the limiting grooves 15 and the limiting holes 12. A second through channel 13 and a second bypass channel 14 are provided at the lower end of the valve stem 6 at the intersection of the first through channel 8 and the first bypass channel 11. A plurality of platinum resistance thermometers 2, heaters 3, and heat insulation plates 9 are installed on the valve body 1 in sections. The pressure sensor 4 is located at the outlet of the first through channel 8.

[0018] During assembly, valve body 1 is connected to the outlet of the edge material screw extruder via a flange, and the outlet of the first bypass channel 11 is connected to an external recovery pipe. During operation, the limiting pin 7 restricts the rotation angle of valve stem 6, ensuring that valve stem 6 is in the correct straight-through or bypass position. When the first straight-through channel 8 is connected to the second straight-through channel 13, the melt is in a straight-through state; when the first bypass channel 11 is connected to the second straight-through channel 13, the melt is in a bypass state. This allows for convenient and flexible switching of the melt flow direction without stopping the machine. Additionally, heater 3 and platinum resistance thermometer 2 are linked through a temperature control system to maintain a constant melt temperature and prevent solidification. Pressure sensor 4 monitors melt pressure in real time to prevent overload. Sealing gasket 10 ensures no melt leakage. Insulation plate 9 prevents heat loss.

[0019] The advantages of this utility model are: simple structure, strong practicality, and the ability to switch the melt flow direction by manual operation to achieve direct or bypass discharge function, thereby improving production flexibility and reliability.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A discharge device, comprising a valve body (1), wherein the valve body (1) has a first through channel (8) and a first bypass channel (11) built in, characterized in that It also includes a platinum resistance thermometer (2), a heater (3), a pressure sensor (4), a valve seat (5), a valve stem (6), a limit pin (7), an insulation plate (9), and a sealing gasket (10); the valve seat (5) is threaded onto the valve body (1), and the valve stem (6) is rotatably mounted on the valve seat (5) by passing through the valve seat (5) and the sealing gasket (10) in sequence. The upper ends of the valve seat (5) and the valve stem (6) are respectively provided with a limit groove (15) and a limit hole (12), and the limit pin (7) is installed on the limit groove (15) and the limit hole (12); the lower end of the valve stem (6) is provided with a second direct channel (13) and a second bypass channel (14) at the intersection of the first direct channel (8) and the first bypass channel (11); several of the platinum resistance thermometers (2), heaters (3), and insulation plates (9) are installed on the valve body (1) in different areas; the pressure sensor (4) is located at the outlet of the first direct channel (8).

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