Melt conversion valve
By introducing an adjustable pressure regulator and heat-tracking runner into the melt steering valve, the problem of insufficient pressure during the waste discharge process is solved, ensuring the normal operation of the melt pump and maintaining melting through the heat-tracking medium Body fluidity and performance are stable.
Patent Information
- Application Number
- CN202411103638.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2024-12-13
AI Technical Summary
The existing melt steering valves cannot maintain normal working pressure during the waste discharge process, resulting in the melt pump being easily damaged and the flowability and performance are unstable.
A melt steering valve including a valve body and a hydraulic device is designed, using an adjustable pressure regulator and a heat tracing runner, and the valve core is driven up and down in the waste discharge hole through the hydraulic device, and the melt is adjusted through the pressure regulator. The pressure flowing into the waste discharge hole, and the heat-tracing medium heats the valve core in the heat-tracing runner to ensure stable fluidity and performance.
The pressure required for the melt pump is maintained during the waste discharge process to avoid damage, and the melt flowability and performance are ensured through heat tracing heating, and the heating medium is more uniform and stable.
Smart Images
Figure CN119123109A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of steering valves, in particular to a melt steering valve. Background Art
[0002] Melt valves are mainly used in high temperature and high pressure occasions, such as steel smelting, power generation and chemical industry, as well as plastic product production equipment. Its working principle is mainly based on the flow control of liquid metal or high temperature molten objects. The melt diverter valve has one feed hole and two or more discharge holes. The purpose of the reversing valve is to change the flow direction of the molten material in the pipeline according to the needs of use, so that the molten material can be discharged from the pipeline. It usually has one feed hole, one discharge hole and one waste discharge hole. The flow direction of the melt is switched by the action of the valve core. Under normal working conditions, the feed hole and the discharge hole are connected through the valve core. In the case of blockage and need to discharge, the valve core is actuated to connect the feed hole with the waste discharge hole to realize the melt diversion and transportation.
[0003] In the underwater pelletizing system, the melt diverter valve is a must-use device. The front end is connected to the melt pump, and the rear end is connected to the die head of the underwater pelletizer. It has two positions, the working position and the waste discharge position, and is driven by a hydraulic cylinder. The melt pump needs to maintain a certain pressure when working. When the existing melt diverter valve is in normal working state, when the melt flows through the discharge hole to the external pipeline and subsequent underwater pelletizers and other equipment, due to the characteristics of the external pipeline and underwater pelletizer connected to the discharge hole, the flow of the melt will inevitably be under pressure; however, when the melt diverter valve is discharging waste, the waste discharge hole is usually not further connected to the equipment with working pressure. Therefore, when the melt flows through the waste discharge hole, the melt pump cannot maintain the pressure required for normal operation, and the melt pump is easily damaged after long-term operation. Summary of the invention
[0004] The object of the present invention is to provide a melt diverting valve, which can adjust the pressure of the melt diverting valve when performing waste discharge operation and provide heating for the melt diverting valve.
[0005] The technical solution adopted by the present invention to solve the above technical problems is: a melt diverter valve, comprising a valve body and a hydraulic device arranged on the upper part of the valve body, a waste discharge hole is vertically opened in the valve body, two ends of the waste discharge hole extend to the top surface and the bottom surface of the valve body respectively, two symmetrical side walls of the valve body are respectively opened with a feed hole and a discharge hole, the feed hole and the discharge hole are both connected with the waste discharge hole, a valve core is arranged in the waste discharge hole, the top end of the valve core is connected with the valve stem, and the hydraulic device can drive the valve core to move up and down in the waste discharge hole through the valve stem; an upper flow channel and a lower flow channel are opened on the valve core, the two end openings of the upper flow channel are respectively facing the two side walls of the valve body, the upper end opening of the lower flow channel is facing the side wall of the valve body, and the lower end opening of the lower flow channel is facing the bottom surface of the valve body, when the valve core moves upward, the two end openings of the upper flow channel can be aligned and connected with the feed hole and the discharge hole respectively, and when the valve core moves downward, the upper end opening of the lower flow channel can be aligned and connected with the feed hole; A pressure regulator is installed at the lower opening of the lower runner. The pressure regulator is screwed onto the internal thread of the inner wall of the lower runner through an external thread. An outer conical surface is provided on the upper side of the pressure regulator. The small end of the outer conical surface faces upward. A plurality of conical holes are provided at intervals on the outer conical surface. The conical holes are connected to the bottom holes of the pressure regulator, so that the melt in the lower runner can pass through the conical holes and flow from the bottom holes to the waste discharge hole. An inner conical surface with the same taper as the outer conical surface is provided on the inner wall of the lower runner. The distance between the inner conical surface and the outer conical surface can be adjusted by changing the position where the pressure regulator is screwed onto the lower opening of the lower runner, so as to adjust the pressure of the melt flowing into the waste discharge hole. The side wall of the valve body is also provided with a heating flow channel, which surrounds the outside of the waste discharge hole. The two symmetrical side walls of the valve body are respectively connected with heating inlet and outlet pipes, which are connected with the heating flow channel, so that the heating medium flows around the waste discharge hole in the heating flow channel and heats the valve core. A magnetic ring is installed at the top of the valve core or the bottom of the valve stem. Two induction switches are arranged on the outside of the hydraulic device. The two induction switches are arranged at intervals up and down. The position of the magnetic ring can be monitored by the two induction switches.
[0006] Preferably, the valve body is a rectangular structure, and the feed hole, the discharge hole and the two heating inlet and outlet pipes are respectively located on four sections of the side walls of the valve body.
[0007] Preferably, the side wall of the valve body is provided with a plurality of protective mesh plates, and the plurality of protective mesh plates cooperate to surround the position where the upper part of the valve core protrudes from the waste discharge hole.
[0008] Preferably, the pressure regulator is provided with an external hexagon, which is located on the side of the external thread away from the external conical surface, and the external conical surface is provided with six conical holes, which are evenly spaced along the circumference of the external conical surface.
[0009] According to the above technical solution, the beneficial effects of the present invention are: The melt diverter valve of the present invention is equipped with a pressure regulator at the lower end opening of the lower flow channel by means of a threaded connection. The installation position of the pressure regulator can be changed by rotating it, thereby changing the distance between the inner cone surface and the outer cone surface. The melt will first flow to the cavity between the inner cone surface and the outer cone surface, then pass through the cone surface hole and flow from the bottom surface hole to the waste discharge hole. Therefore, when the distance between the inner cone surface and the outer cone surface is reduced, the flow pressure of the melt will increase, thereby adjusting the pressure of the melt flowing into the waste discharge hole, so that when the melt flows through the waste discharge hole, the melt pump can also maintain the pressure required for normal operation, which can avoid damage to the melt pump due to lack of pressure in the waste discharge process of the melt diverter valve. The pressure regulator has a simple structure and is easy to install. The method of adjusting pressure is also simple and reliable, which can meet the pressure requirements of different melt pumps.
[0010] The present invention has a heat-tracing flow channel on the side wall of the valve body, and the heat-tracing flow channel surrounds the outside of the waste discharge hole. The heat-tracing medium can flow around the waste discharge hole in the heat-tracing flow channel and heat the valve core to ensure the fluidity of the melt and maintain the stability of its performance. The heat medium heating is more uniform and stable than the traditional electric heating. The present invention installs a magnetic ring on the top of the valve core or the bottom of the valve stem, and two induction switches are arranged at intervals on the upper and lower sides of the outer side of the hydraulic device. The two induction switches can cooperate to monitor the position of the magnetic ring, and then the position signal of the valve core can be fed back to the underwater pelletizer and other equipment by the electric control system, and the operation of the equipment can be interlocked to ensure the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a front view of the present invention; Figure 2 for Figure 1 A top view of Figure 3 for Figure 1 Right view of; Figure 4 It is the cross-sectional view of AA; Figure 5 is a cross-sectional view of BB; Figure 6 for Figure 4 A partial enlarged view of Figure 7 for Figure 5 A partial enlarged view of Figure 8 is a three-dimensional diagram of a pressure regulator; Fig. 9 A perspective view of a pressure regulator.
[0012] Markings in the figure: 1. Valve body, 2. Hydraulic device, 3. Induction switch, 4. Protective mesh plate, 5. Heat tracing flow channel, 6. Heat tracing inlet and outlet pipes, 7. Feed hole, 8. Discharge hole, 9. Waste discharge hole, 10. Valve stem, 11. Valve core, 12. Upflow channel, 13. Downflow channel, 14. Pressure regulator, 15. Inner cone surface, 16. Outer cone surface, 17. Conical hole surface, 18. Bottom hole surface, 19. Internal thread, 20. External thread. DETAILED DESCRIPTION
[0013] With reference to the accompanying drawings, the specific implementation is as follows: like Figure 1-3 As shown, a melt diverter valve comprises a valve body 1 and a hydraulic device 2 arranged on the upper part of the valve body 1. Figure 4 , 5 As shown, a waste discharge hole 9 is vertically opened in the valve body 1, and the two ends of the waste discharge hole 9 extend to the top surface and the bottom surface of the valve body 1 respectively. The two symmetrical side walls of the valve body 1 are respectively opened with a feed hole 7 and a discharge hole 8, and the feed hole 7 and the discharge hole 8 are both connected to the waste discharge hole 9. A valve core 11 is arranged in the waste discharge hole 9, and the top end of the valve core 11 is connected to the valve stem 10. The hydraulic device 2 can drive the valve core 11 to move up and down in the waste discharge hole 9 through the valve stem 10.
[0014] like Figure 1 , 2 As shown, the side wall of the valve body 1 is provided with a plurality of protective mesh plates 4, and the plurality of protective mesh plates 4 are cooperated to surround the position where the upper part of the valve core 11 extends from the waste discharge hole 9. When the valve core 11 moves upward, part of the melt may spray upward along the gap between the valve core 11 and the waste discharge hole 9, which may cause harm to the human body, and the protective mesh plates 4 can provide safety protection for the human body.
[0015] like Figure 1 , 2 As shown, a magnetic ring is installed at the top of the valve core 11 or the bottom of the valve stem 10, and two induction switches 3 are provided on the outside of the hydraulic device 2. The two induction switches 3 are arranged at intervals up and down, and the position of the magnetic ring can be monitored by the two induction switches 3.
[0016] like Figure 4 , 5 As shown, an upper flow channel 12 and a lower flow channel 13 are provided on the valve core 11, and the openings at both ends of the upper flow channel 12 are respectively facing the two side walls of the valve body 1, the upper end opening of the lower flow channel 13 is facing the side wall of the valve body 1, and the lower end opening of the lower flow channel 13 is facing the bottom surface of the valve body 1. When the valve core 11 moves upward, the openings at both ends of the upper flow channel 12 can be aligned and connected with the feed hole 7 and the discharge hole 8 respectively, and when the valve core 11 moves downward, the upper end opening of the lower flow channel 13 can be aligned and connected with the feed hole 7.
[0017] like Figure 6 , 7As shown, a pressure regulator 14 is installed at the lower end opening of the downflow channel 13. The pressure regulator 14 is screwed onto the internal thread 19 of the inner wall of the downflow channel 13 through the external thread 20. An external conical surface 16 is provided on the upper side of the pressure regulator 14. The small end of the external conical surface 16 faces upward. A plurality of conical holes 17 are spaced apart on the external conical surface 16. The conical holes 17 are connected to the bottom hole 18 of the pressure regulator 14, so that the melt in the downflow channel 13 can pass through the conical hole 17 and flow from the bottom hole 18 to the waste discharge hole 9.
[0018] like Figure 8 , 9 As shown, the pressure regulator 14 is provided with an external hexagon, which is located on the side of the external thread 20 away from the external conical surface 16 , and the external conical surface 16 is provided with six conical holes 17 , which are evenly spaced along the circumference of the external conical surface 16 .
[0019] like Figure 6 , 7 As shown, the inner wall of the downflow channel 13 is provided with an inner cone 15 with the same taper as the outer cone 16. By rotating the pressure regulator 14 with an external hexagon, the installation position of the pressure regulator 14 at the lower end opening of the downflow channel 13 can be changed, thereby changing the distance between the inner cone 15 and the outer cone 16. The melt will first flow to the cavity between the inner cone 15 and the outer cone 16, and then pass through the cone hole 17 and flow out from the bottom hole 18. Therefore, when the distance between the inner cone 15 and the outer cone 16 is reduced, the flow pressure of the melt will increase, thereby adjusting the pressure of the melt flowing into the waste discharge hole 9, so that the melt pump can maintain the pressure required for normal operation, and can avoid the melt pump from being damaged due to lack of pressure in the waste discharge process of the melt diverter valve.
[0020] like Figure 4 , 5 As shown, a heating channel 5 is further provided on the side wall of the valve body 1, and the heating channel 5 surrounds the outside of the waste discharge hole 9. The valve body 1 is a rectangular structure. The feed hole 7, the discharge hole 8 and two heating inlet and outlet pipes 6 are respectively located on the four sections of the side wall of the valve body 1. The heating inlet and outlet pipes 6 are connected with the heating channel 5. The heating medium can flow around the waste discharge hole 9 in the heating channel 5 and heat the valve core 11, thereby ensuring the fluidity of the melt and maintaining the stability of its performance.
Claims
1. A melt diverter valve, characterized in that: The invention comprises a valve body (1) and a hydraulic device (2) arranged on the upper part of the valve body (1); a waste discharge hole (9) is vertically opened in the valve body (1); two ends of the waste discharge hole (9) extend to the top surface and the bottom surface of the valve body (1) respectively; two symmetrical side walls of the valve body (1) are respectively opened with a feed hole (7) and a discharge hole (8); the feed hole (7) and the discharge hole (8) are both connected to the waste discharge hole (9); a valve core (11) is arranged in the waste discharge hole (9); the top end of the valve core (11) is connected to the valve stem (10); the hydraulic device (2) can drive the valve core (11) to move in the waste discharge hole (9) through the valve stem (10). ) moves up and down in the valve body (1); an upper flow channel (12) and a lower flow channel (13) are provided on the valve core (11); the openings at both ends of the upper flow channel (12) are respectively directed toward the two side walls of the valve body (1); the upper end opening of the lower flow channel (13) is directed toward the side wall of the valve body (1); and the lower end opening of the lower flow channel (13) is directed toward the bottom surface of the valve body (1); when the valve core (11) moves upward, the openings at both ends of the upper flow channel (12) can be aligned and communicated with the feed hole (7) and the discharge hole (8) respectively; when the valve core (11) moves downward, the upper end opening of the lower flow channel (13) can be aligned and communicated with the feed hole (7); The lower end opening of the lower flow channel (13) is provided with a pressure regulator (14), which is screwed onto an internal thread (19) on the inner wall of the lower flow channel (13) via an external thread (20). An outer conical surface (16) is provided on the upper side of the pressure regulator (14), the small end of the outer conical surface (16) faces upward, and a plurality of conical holes (17) are provided at intervals on the outer conical surface (16). The conical holes (17) are connected to a bottom hole (18) of the pressure regulator (14), thereby The melt in the lower flow channel (13) is allowed to pass through the conical hole (17) and flow from the bottom hole (18) to the waste discharge hole (9). The inner wall of the lower flow channel (13) is provided with an inner conical surface (15) having the same taper as the outer conical surface (16). By changing the position of the pressure regulator (14) screwed on the lower end opening of the lower flow channel (13), the distance between the inner conical surface (15) and the outer conical surface (16) can be adjusted, thereby adjusting the pressure of the melt flowing into the waste discharge hole (9); The side wall of the valve body (1) is also provided with a heating flow channel (5), which surrounds the outer side of the waste discharge hole (9). Two symmetrical side walls of the valve body (1) are respectively connected with heating inlet and outlet pipes (6), and the heating inlet and outlet pipes (6) are connected to the heating flow channel (5), so that the heating medium flows around the waste discharge hole (9) in the heating flow channel (5) and heats the valve core (11); A magnetic ring is installed at the top end of the valve core (11) or the bottom end of the valve stem (10). Two induction switches (3) are arranged on the outside of the hydraulic device (2). The two induction switches (3) are arranged at intervals up and down. The position of the magnetic ring can be monitored by the two induction switches (3).
2. A melt diverter valve according to claim 1, characterized in that: The valve body (1) is a rectangular structure, and the feed hole (7), the discharge hole (8) and the two heating inlet and outlet pipes (6) are respectively located on four side walls of the valve body (1).
3. A melt diverting valve according to claim 1, characterized in that: The side wall of the valve body (1) is provided with a plurality of protective mesh plates (4), and the plurality of protective mesh plates (4) are arranged to surround the position of the upper part of the valve core (11) extending from the waste discharge hole (9).
4. A melt diverting valve according to claim 1, characterized in that: The pressure regulator (14) is provided with an external hexagonal hole, which is located on a side of the external thread (20) away from the external conical surface (16). The external conical surface (16) is provided with six conical holes (17), which are evenly spaced along the circumference of the external conical surface (16).