Electrical heating device based on a trigger plate trigger stroke control structure

Abstract

The application discloses an electrode boiler with stroke control structure, which comprises a boiler shell, a phase electrode and a zero electrode, the phase electrode is fixedly arranged in the boiler shell, the zero electrode is fixedly arranged in the boiler shell, the electrode head of the phase electrode is located in the zero electrode, and the electrode boiler further comprises a threaded transmission shaft, a transmission nut, a connecting plate, an isolation shield, a positioning slide column, a positioning guide rail and a power equipment, the threaded transmission shaft is rotationally arranged in the boiler shell, the transmission nut is rotationally matched with the threaded transmission shaft, the connecting plate is fixed on the transmission nut, the isolation shield is fixed on the connecting plate, the isolation shield is located between the phase electrode and the zero electrode, the positioning slide column is fixed on the connecting plate, the positioning guide rail is fixed in the boiler shell, and the positioning slide column is slidably matched with the positioning guide rail, and the power equipment is arranged on the boiler shell and the threaded transmission shaft is parallel to the phase electrode.

Description

[0001] This application is a divisional application of the invention entitled "Electrode Boiler with Stroke Control Structure", filed on September 5, 2019, with application number "201910836504X". Technical Field

[0002] This invention relates to the field of boiler equipment, and more particularly to an electrode boiler with a stroke control structure. Background Technology

[0003] Patent CN2018100757039 provides an electrode heating boiler. This type of electrode heating boiler uses the lifting and lowering of a drive shaft inside the boiler shell to raise and lower the isolation shield. Therefore, when adjusting the heating power, this type of electrode heating boiler must make the drive shaft move up and down. The up and down movement of the drive shaft requires it to constantly move in and out of the boiler shell. This constant movement of the drive shaft in and out of the boiler shell is inconvenient and poses a safety hazard. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes an electrode boiler with a stroke control structure.

[0005] The technical solution adopted in this invention is as follows:

[0006] An electrode boiler with a stroke control structure includes a boiler shell, a phase electrode, and a zero-position electrode. The phase electrode and the zero-position electrode are fixedly disposed within the boiler shell, with the electrode head of the phase electrode located within the zero-position electrode. The boiler also includes a threaded drive shaft, a drive nut, a connecting plate, an isolation shield, a positioning slide column, a positioning guide rail, and a power unit. The threaded drive shaft is rotatably disposed within the boiler shell, and the drive nut is rotatably engaged with the threaded drive shaft. The connecting plate is fixed to the drive nut, and the isolation shield is fixed to the connecting plate, located between the phase electrode and the zero-position electrode. The positioning slide column is fixed to the connecting plate, and the positioning guide rail is fixed within the boiler shell, with the positioning slide column and positioning guide rail slidably engaged. The power unit is disposed on the boiler shell, and the threaded drive shaft is parallel to the phase electrode. The power unit drives the threaded drive shaft to rotate within the boiler shell. When the threaded drive shaft rotates, the drive nut moves along the threaded drive shaft.

[0007] The function of this device is as follows: First, the positioning slide pin and the positioning guide rail slide together, preventing the connecting plate from rotating with the threaded drive shaft. During the rotation of the threaded drive shaft, the connecting plate moves along the threaded drive shaft, thus moving the isolation shield along with it. Specifically, the connecting plate is fixed to the drive nut by a fixing plate.

[0008] In summary, the threaded drive shaft of this device only needs to rotate to drive the isolation shield to move, without the need for the threaded drive shaft to enter or exit the boiler shell, making boiler adjustment more convenient and with a higher safety factor.

[0009] Optionally, the power equipment includes a motor, a connecting shaft, and a reducer. An actuator connecting seat is installed on the outer wall of the pot shell. The electrode and the reducer are both installed on the actuator connecting seat. The motor and the reducer are linked through a coupling. The reducer and the threaded drive shaft are linked through the connecting shaft.

[0010] Optionally, one end of the connecting shaft is connected to the reducer via a coupling, and the other end of the connecting shaft is connected to the threaded drive shaft via a coupling.

[0011] Optionally, it also includes a proximity switch base, a ball screw, an upper limit proximity switch, a lower limit proximity switch, a trigger plate, and a screw nut. The proximity switch base is mounted on the end cover of the reducer. The ball screw is coupled to the shaft of the reducer. The screw nut is mounted on the ball screw. The trigger plate is fixed on the screw nut. The upper limit proximity switch and the lower limit proximity switch are used to detect the position of the trigger plate. When the reducer drives the ball screw to rotate, the screw nut moves the trigger plate along the ball screw.

[0012] Because both the ball screw and the threaded drive shaft are mounted on the reducer shaft, their rotation is simultaneous. When the ball screw stops rotating, the threaded drive shaft also stops rotating. Therefore, a trigger plate is installed on the ball screw. The position of the trigger plate on the proximity switch base indirectly indicates the position of the connecting plate inside the pot shell. Since the isolation shield is fixed to the connecting plate, the position of the connecting plate can represent the position of the isolation shield. The upper limit proximity switch and the lower limit proximity switch represent the extreme positions of the trigger plate on the proximity switch base. Therefore, through corresponding proportional calculations, the position of the upper limit proximity switch represents the highest position the connecting plate can move to inside the pot shell, and the lower limit proximity switch represents the lowest position the connecting plate can reach inside the pot shell. When the upper limit proximity switch or the lower limit proximity switch detects the trigger plate, the upper limit proximity switch or the lower limit proximity switch immediately notifies the motor to stop.

[0013] The above design allows for precise monitoring of the highest and lowest movement positions of the isolation shield, ensuring the safety of the entire device. Furthermore, the position of the isolation shield inside the pot shell can be indirectly determined by observing the position of the trigger plate on the ball screw. This design is convenient to operate and has a high safety factor.

[0014] Optionally, it also includes an upper limit limit switch and a lower limit limit switch, both of which are mounted on a proximity switch base; when the trigger plate contacts the upper limit limit switch or the lower limit limit switch, the motor stops rotating.

[0015] The upper and lower limit limit switches serve as a final safety measure. When the detection function of the upper and lower limit proximity switches fails, the upper or lower limit limit switch will immediately disconnect the power supply to the motor when the trigger plate contacts it, thus providing good protection for the isolation shield.

[0016] Optionally, it also includes a counting proximity switch and a rotating plate, wherein the rotating plate is fixed on the ball screw and the counting proximity switch is mounted on a proximity switch base; when the ball screw rotates, the rotating plate rotates together with the ball screw, and the counting proximity switch is used to detect the number of rotations of the rotating plate.

[0017] The number of rotations of the rotating plate is the same as the number of rotations of the ball screw. The above design is for recording the number of rotations of the ball screw. Since both the ball screw and the threaded drive shaft are mounted on the reducer shaft, the number of rotations of the ball screw and the threaded drive shaft are the same. The number of rotations of the threaded drive shaft is determined by measuring the number of rotations of the ball screw. The number of rotations of the threaded drive shaft can be calculated as the distance the isolation shield moves up or down. Therefore, the above design can achieve control of any position of the isolation shield. The movement of the isolation shield will change the power of the entire boiler. Therefore, the above design can accurately set the heating power of the boiler as needed.

[0018] Optionally, a partition is provided inside the pot shell, and a positioning bushing is installed on the partition. One end of the threaded drive shaft is rotatably engaged with the positioning bushing.

[0019] The above design ensures that the threaded drive shaft is always in a stable rotational state and does not deviate.

[0020] Optionally, there are three phase electrodes, and the three phase electrodes are distributed in an equilateral triangle inside the pot shell, with the threaded drive shaft located at the center of the equilateral triangle.

[0021] The above design can ensure stable power.

[0022] The beneficial effects of this invention are: the threaded drive shaft of this device only needs to rotate to drive the isolation shield to move, without the need for the threaded drive shaft to enter or exit the boiler shell, making boiler adjustment more convenient and with a higher safety factor; the heating power can be precisely adjusted according to the heating; the highest and lowest movement positions of the isolation shield can be accurately monitored to ensure the safety of the entire device; and the position of the isolation shield inside the boiler shell can be indirectly determined by observing the position of the trigger plate on the ball screw, making operation convenient and with a high safety factor. Attached image description:

[0023] Figure 1 This is a simplified schematic diagram of an electrode boiler with a stroke control structure;

[0024] Figure 2 This is a schematic diagram showing the positional relationship of the various components inside the pot shell;

[0025] Figure 3 This is a simplified structural diagram of the power equipment.

[0026] The figures are labeled as follows: 1. Motor, 2. Actuator connecting seat, 3. Phase electrode, 301. Electrode head, 4. Pot shell, 5. Coupling, 6. Threaded drive shaft, 7. Isolation shield, 8. Zero position electrode, 9. Positioning guide rail, 10. Positioning slide column, 11. Partition plate, 12. Positioning bushing, 13. Fixing plate, 14. Transmission nut, 15. Connecting shaft, 16. Reducer, 17. Counting proximity switch, 18. Rotating plate, 1901. Lower limit proximity switch, 1902. Upper limit proximity switch, 20. Screw nut, 21. Proximity switch seat, 22. Ball screw, 23. Trigger plate, 2401. Lower limit limit switch, 2402. Upper limit limit switch. Detailed implementation method:

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] As attached Figure 1 Appendix Figure 2 and appendix Figure 3As shown, an electrode boiler with a stroke control structure includes a boiler shell 4, a phase electrode 3, and a zero-position electrode 8. The phase electrode 3 is fixedly installed inside the boiler shell 4, and the zero-position electrode 8 is also fixedly installed inside the boiler shell 4. The electrode head 301 of the phase electrode 3 is located inside the zero-position electrode 8. The boiler also includes a threaded drive shaft 6, a drive nut 14, a connecting plate, an isolation shield 7, a positioning slide column 10, a positioning guide rail 9, and a power device. The threaded drive shaft 6 is rotatably installed inside the boiler shell 4. The drive nut 14 is rotatably engaged with the threaded drive shaft 6. The connecting plate is fixed to the drive nut 14. The isolation shield 7 is fixed to the connecting plate and is located between the phase electrode 3 and the zero-position electrode 8. The positioning slide column 10 is fixed to the connecting plate, and the positioning guide rail 9 is fixed inside the boiler shell 4. The positioning slide column 10 and the positioning guide rail 9 are slidably engaged. The power device is installed on the boiler shell 4, and the threaded drive shaft 6 is parallel to the phase electrode 3. The power device is used to drive the threaded drive shaft 6 to rotate inside the boiler shell 4. When the threaded drive shaft 6 rotates, the drive nut 14 moves along the threaded drive shaft 6.

[0029] The function of this device is as follows: First, the positioning slide 10 and the positioning guide rail 9 are slidably engaged, so the connecting plate cannot rotate with the threaded drive shaft 6. During the rotation of the threaded drive shaft 6, the connecting plate will move along the threaded drive shaft 6, thus moving the isolation shield 7 along with the connecting plate. Specifically, the connecting plate is fixed to the transmission nut 14 by the fixing plate 13.

[0030] In summary, the threaded drive shaft 6 of this device only needs to rotate to drive the isolation shield 7 to move, without the need for the threaded drive shaft 6 to enter or exit the boiler shell 4, making boiler adjustment more convenient and with a higher safety factor.

[0031] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the power equipment includes a motor 1, a connecting shaft 15, and a reducer 16. An actuator connecting seat 2 is installed on the outer wall of the pot shell 4. The electrode and the reducer 16 are both installed on the actuator connecting seat 2. The motor 1 and the reducer 16 are linked through a coupling 5. The reducer 16 and the threaded transmission shaft 6 are linked through the connecting shaft 15.

[0032] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, one end of the connecting shaft 15 is connected to the reducer 16 via the coupling 5, and the other end of the connecting shaft 15 is connected to the threaded drive shaft 6 via the coupling 5.

[0033] As attached Figure 1 Appendix Figure 2 and appendix Figure 3As shown, it also includes a proximity switch base 21, a ball screw 22, an upper limit proximity switch 1902, a lower limit proximity switch 1901, a trigger plate 23, and a screw nut 20. The proximity switch base 21 is mounted on the end cover of the reducer 16. The ball screw 22 is engaged with the shaft of the reducer 16. The screw nut 20 is mounted on the ball screw 22. The trigger plate 23 is fixed on the screw nut 20. The upper limit proximity switch 1902 and the lower limit proximity switch 1901 are used to detect the position of the trigger plate 23. When the reducer 16 drives the ball screw 22 to rotate, the screw nut 20 moves along the ball screw 22 with the trigger plate 23.

[0034] Since both the ball screw 22 and the threaded drive shaft 6 are mounted on the shaft of the reducer 16, their rotation is simultaneous. When the ball screw 22 stops rotating, the threaded drive shaft 6 also stops rotating. Therefore, a trigger plate 23 is installed on the ball screw 22. The position of the trigger plate 23 on the proximity switch seat 21 indirectly indicates the position of the connecting plate inside the pot shell 4. Since the isolation shield 7 is fixed on the connecting plate, the position of the connecting plate can represent the position of the isolation shield 7. The upper limit proximity switch 1902 and the lower limit proximity switch 1901 represent the extreme positions of the trigger plate 23 on the proximity switch base 21. Therefore, by calculating the corresponding ratio, the position of the upper limit proximity switch 1902 represents the highest position that the connecting plate can move to inside the pot shell 4, and the lower limit proximity switch 1901 represents the lowest position that the connecting plate can reach in the pot shell 4. When the upper limit proximity switch 1902 or the lower limit proximity switch 1901 detects the trigger plate 23, the upper limit proximity switch 1902 or the lower limit proximity switch 1901 immediately notifies the motor 1 to stop.

[0035] The above design enables precise monitoring of the highest and lowest movement positions of the isolation shield 7, ensuring the safety of the entire device. Furthermore, the position of the isolation shield 7 inside the pot shell 4 can be indirectly determined by observing the position of the trigger plate 23 on the ball screw 22. This design is convenient to operate and has a high safety factor.

[0036] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, it also includes an upper limit limit switch 2402 and a lower limit limit switch 2401, both of which are mounted on the proximity switch base 21; when the trigger plate 23 contacts the upper limit limit switch 2402 or the lower limit limit switch 2401, the motor 1 stops rotating.

[0037] The upper limit limit switch 2402 and the lower limit limit switch 2401 serve as a final safety measure. When the detection function of the upper limit proximity switch 1902 and the lower limit proximity switch 1901 fails, when the trigger plate 23 contacts the upper limit limit switch 2402 or the lower limit limit switch 2401, the upper limit limit switch 2402 or the lower limit limit switch 2401 immediately disconnects the power supply to the motor 1, thus providing good protection for the isolation shield 7.

[0038] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, it also includes a counting proximity switch 17 and a rotating plate 18. The rotating plate 18 is fixed on the ball screw 22, and the counting proximity switch 17 is mounted on the proximity switch base 21. When the ball screw 22 rotates, the rotating plate 18 rotates together with the ball screw 22. The counting proximity switch is used to detect the number of rotations of the rotating plate 18.

[0039] The number of rotations of the rotating plate 18 is the same as the number of rotations of the ball screw 22. The above design is for recording the number of rotations of the ball screw 22. Since both the ball screw 22 and the threaded drive shaft 6 are mounted on the shaft of the reducer 16, the number of rotations of the ball screw 22 is consistent with the number of rotations of the threaded drive shaft 6. The number of rotations of the threaded drive shaft 6 is determined by measuring the number of rotations of the ball screw 22. The number of rotations of the threaded drive shaft 6 can be calculated as the distance that the isolation shield 7 moves up or down. Therefore, the above design can achieve control of any position of the isolation shield 7. The movement of the isolation shield 7 will change the power of the entire boiler. Therefore, the above design can accurately set the heating power of the boiler as needed.

[0040] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, a partition 11 is provided inside the pot shell 4, and a positioning bushing 12 is installed on the partition 11. One end of the threaded drive shaft 6 is rotatably engaged with the positioning bushing 12.

[0041] The above design ensures that the threaded drive shaft 6 is always in a stable rotational state and does not deviate.

[0042] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, there are three phase electrodes 3, and the three phase electrodes 3 are distributed in an equilateral triangle inside the pot shell 4, with the threaded drive shaft 6 located at the center of the equilateral triangle.

[0043] See appendix Figure 3Here is a brief description of the structure of the proximity switch base 22. The proximity switch base is actually a hollow cylindrical object with straight holes on the cylinder wall. The trigger plate is located on the hole in the cylinder wall. The hole in the cylinder wall limits the trigger plate to prevent rotation, so that the trigger plate can only move along the ball screw.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. An electric heating device based on a trigger plate trigger stroke control structure, comprising a pot shell, a phase electrode, and a zero-position electrode, wherein the phase electrode is fixedly disposed within the pot shell, the zero-position electrode is fixedly disposed within the pot shell, and the electrode head of the phase electrode is located within the zero-position electrode, characterized in that, It also includes a threaded drive shaft, a drive nut, a connecting plate, an isolation shield, a positioning slide column, a positioning guide rail, and a power device. The threaded drive shaft is rotatably mounted inside the pot shell. The drive nut is rotatably engaged with the threaded drive shaft. The connecting plate is fixed to the drive nut. The isolation shield is fixed to the connecting plate and is located between the phase electrode and the zero-position electrode. The positioning slide column is fixed to the connecting plate. The positioning guide rail is fixed inside the pot shell and is slidably engaged with the positioning slide column. The power device is mounted on the pot shell, and the threaded drive shaft is parallel to the phase electrode. The power device drives the threaded drive shaft to rotate inside the pot shell. When the threaded drive shaft rotates, the drive nut moves along the threaded drive shaft. The power equipment includes a motor, a connecting shaft, and a reducer. An execution structure connecting seat is installed on the outer wall of the pot shell. The electrode and the reducer are both installed on the execution structure connecting seat. The motor and the reducer are linked through a coupling. The reducer and the threaded transmission shaft are linked through the connecting shaft. One end of the connecting shaft is connected to the reducer via a coupling, and the other end of the connecting shaft is connected to the threaded drive shaft via a coupling. It also includes a proximity switch base, a ball screw, an upper limit proximity switch, a lower limit proximity switch, a trigger plate, and a screw nut. The proximity switch base is mounted on the end cover of the reducer. The ball screw is coupled to the shaft of the reducer. The screw nut is mounted on the ball screw. The trigger plate is fixed on the screw nut. The upper limit proximity switch and the lower limit proximity switch are used to detect the position of the trigger plate. When the reducer drives the ball screw to rotate, the screw nut moves the trigger plate along the ball screw. A partition is provided inside the pot shell, and a positioning bushing is installed on the partition. One end of the threaded drive shaft is rotatably engaged with the positioning bushing. There are three phase electrodes, and the three phase electrodes are distributed in an equilateral triangle inside the pot shell, with the threaded drive shaft located at the center of the equilateral triangle.

2. The electric heating device based on the trigger plate trigger stroke control structure as described in claim 1, characterized in that, It also includes an upper limit limit switch and a lower limit limit switch, both of which are mounted on a proximity switch base; when the trigger plate contacts the upper limit limit switch or the lower limit limit switch, the motor stops rotating.

3. The electric heating device based on the trigger plate trigger stroke control structure as described in claim 1, characterized in that, It also includes a counting proximity switch and a rotating plate. The rotating plate is fixed on the ball screw, and the counting proximity switch is mounted on a proximity switch base. When the ball screw rotates, the rotating plate rotates along with the ball screw. The counting proximity switch is used to detect the number of rotations of the rotating plate.

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