Pressure relief device of sulfur melting kettle

Abstract

The utility model provides a pressure relief device of a sulfur melting kettle, and relates to the technical field of sulfur melting kettles. The utility model is used for solving the technical problems that the existing patent can not timely and quickly release pressure, the explosion risk is easy to occur, and the personal safety is threatened. The pressure relief device of the sulfur melting kettle comprises a bottom plate, a fixing frame, the sulfur melting kettle, a rotating cover, a discharging pipe and a discharging valve, the fixing frame is installed on the bottom plate, the middle of the fixing frame is connected with the sulfur melting kettle in a sleeved mode, the rotating cover is arranged on the sulfur melting kettle in a threaded mode, the sulfur melting kettle is connected and communicated with the discharging pipe, and the discharging valve is rotationally arranged on the discharging pipe. The limiting plate is pulled to drive the guide rod to slide towards one side far away from the pressure relief door rotating shaft, so that the pressure relief door is separated from being limited by pulling, then high-pressure gas is discharged from the opening, and the purpose of relieving the pressure of the sulfur melting kettle is achieved.

Description

Technical Field

[0001] The utility model relates to a pressure relief device for a sulfur melting kettle. Background Art

[0002] A sulfur melting kettle is a device for melting and refining sulfur paste generated in a desulfurization process. Its principle is to melt sulfur by using high temperature, change the physical properties of the sample by heating the sample to a set temperature for melting, and then transport it to the required place through a pipeline.

[0003] The patent with the patent authorization announcement number CN210973882U discloses a sulfur melting kettle. The patent includes a kettle body and a jacket cylinder body. The jacket cylinder body is fixedly wrapped around the outer circle of the lower end of the kettle body, and a steam chamber is formed between the jacket cylinder body and the outer wall of the kettle body. A steam pipe is obliquely fixed on the left side inside the kettle body, and the upper end of the steam pipe penetrates to the outside of the kettle body. The lower end of the steam pipe is connected with a spiral pipe, the spiral pipe is spirally fixed on the inner side of the bottom of the kettle body, and the bottom of the spiral pipe is connected with a steam port, and the steam port is communicated with the inside of the spiral pipe. The upper end of the left side of the jacket cylinder body is connected with a water vapor inlet. It is proposed in the above patent that by connecting the lower end of the steam pipe with a spiral pipe and connecting the bottom of the spiral pipe with a steam port located inside the kettle body, the waste heat of the steam can be fully utilized for heating during use. However, there are still deficiencies in the actual use process of this patent. After heating inside the kettle body, the pressure inside the kettle will increase. Although a pressure gauge is provided, there is no independent pressure discharge port, and only slow pressure relief can be carried out by stopping heating and pressurization and small pipelines such as the steam pipe communicating with the outside world. It cannot relieve pressure quickly in time, and there is an easy risk of explosion, posing a threat to personal safety.

[0004] Therefore, a pressure relief device for a sulfur melting kettle is needed, so that the sulfur melting kettle can relieve pressure quickly in time through the setting of a pressure relief door. Content of the Utility Model

[0005] In order to overcome the shortcomings that the existing patent cannot relieve pressure quickly in time, is prone to explosion risk and poses a threat to personal safety, the utility model provides a pressure relief device for a sulfur melting kettle, so that the sulfur melting kettle can relieve pressure quickly in time through the setting of a pressure relief door.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: a molten sulfur kettle pressure relief device, including a bottom plate, a fixed frame, a molten sulfur kettle, a rotating cover, a discharge pipe and a discharge valve, a fixed frame is installed on the bottom plate, a molten sulfur kettle is sleeved in the middle of the fixed frame, a molten sulfur kettle is threadedly provided with a rotating cover, a molten sulfur kettle is connected and communicated with a discharge pipe, a discharge valve is rotatably provided on the discharge pipe, and also includes a pressure relief door, a mounting seat, a limit plate, a guide rod, a second elastic member and a buffer component, a pressure relief valve is rotatably provided on the molten sulfur kettle The molten sulfur kettle is provided with a mounting seat, which is located on the side of the pressure relief door away from the rotating shaft. A limiting plate for limiting the pressure relief door is slidably arranged on the mounting seat. Two guide rods are fixedly connected to the limiting plate. Two second elastic members are fixedly connected between the guide rods and the mounting seat. The second elastic member is used to pull the limiting plate to slide and reset to the side close to the pressure relief door. The molten sulfur kettle is provided with a buffer component for buffering the impact force generated when the high-pressure gas in the molten sulfur kettle impacts the pressure relief door. The buffer component is located on the rotating path of the pressure relief door.

[0007] More preferably, a holding rod is fixedly connected to the eccentric portion of the rotating cover.

[0008] More preferably, the buffer assembly includes a baffle, a first elastic member and a shock-absorbing plate. The baffle is installed on the molten sulfur kettle. The baffle is located on the rotation path of the pressure relief door. A plurality of first elastic members are fixedly connected to the baffle. A shock-absorbing plate is fixedly connected to each elastic member. When the pressure relief door rotates, the shock-absorbing plate is pushed to compress the first elastic member.

[0009] More preferably, it also includes a button, an alarm and a flashing light. The button is installed on the limit plate, the alarm is installed on the molten sulfur kettle, the button is electrically connected to the alarm, a plurality of flashing lights are installed on the connecting ring of the fixing frame, and the button is electrically connected to the flashing lights.

[0010] More preferably, the flashing lights are distributed circumferentially around the connecting ring of the fixing frame.

[0011] More preferably, it also includes a fixing ring, a pressure plate, a screw, a third elastic member and a nut. An automatic pressure relief port is provided on the molten sulfur kettle, and a fixing ring is installed on the molten sulfur kettle. The fixing ring is located at the automatic pressure relief port. A plurality of screws are fixedly connected to the fixing ring. A pressure plate is slidingly arranged on the screws. Nuts are threadedly arranged on the screws. A third elastic member is wound around each screw. The nut limits the third elastic member and the pressure plate. The third elastic member pushes the pressure plate to fit tightly against the fixing ring.

[0012] More preferably, it also includes a connecting frame, a rotating ring, a scraper and a torsion spring. A rotating ring is rotatably arranged on the discharge pipe, and a connecting frame is installed on the rotating ring. The scraper is fixedly connected to the connecting frame. The scraper extends from the discharge port of the discharge pipe. The scraper is driven to rotate along the inner wall of the discharge pipe by turning the connecting frame. A torsion spring is fixedly connected between the connecting frame and the discharge pipe.

[0013] More preferably, a warning sign for warning is installed on the baffle plate.

[0014] More preferably, a buffer pad is installed on the shock-absorbing plate.

[0015] A working method of a pressure relief device for a sulfur melting kettle:

[0016] When the pressure in the sulfur melting kettle is too high during the smelting process, press the button to make the alarm sound, and at the same time make the flashing light flash. Drive the guide rod to slide to the side away from the rotation axis of the pressure relief door by pulling the limit plate, so that the pulling is disengaged from the limit of the pressure relief door, and the high-pressure gas in the sulfur melting kettle is discharged. The high-pressure gas in the sulfur melting kettle impacts the pressure relief door, and the pressure relief door rotates along the rotation axis. The pressure relief door will impact the shock-absorbing plate, and use the shock-absorbing plate to push the first elastic member towards the baffle plate to compress, and the first elastic member buffers the impact. When the pressure in the sulfur melting kettle is too high and the pressure relief is not carried out in time, the high-pressure gas will push the pressing plate to slide along the screw rod to the side away from the fixed ring, and the pressing plate deforms the third elastic member. The high-pressure gas in the sulfur melting kettle automatically discharges through the gap generated between the pressing plate and the fixed ring. According to needs, rotate the nut to adjust the initial thrust of the third elastic member on the pressing plate to control the pressure critical point of the automatic pressure relief of the sulfur melting kettle. After the pressure relief, rotate the discharge valve to discharge the smelted sulfur paste from the discharge pipe. When the sulfur paste is discharged from the discharge pipe, hold and rotate the connecting frame, and the connecting frame drives the scraper to scrape the residual sulfur paste on the inner wall of the discharge pipe.

[0017] Compared with the prior art, the sulfur melting kettle provided by the embodiment of the present invention and its working method have the following advantages:

[0018] 1. Drive the guide rod to slide to the side away from the rotation axis of the pressure relief door by pulling the limit plate, so that the pulling is disengaged from the limit of the pressure relief door, and then the high-pressure gas is discharged from the opening to achieve the purpose of relieving the pressure of the sulfur melting kettle.

[0019] 2. Press the button to make the alarm sound to warn others in the form of sound, and at the same time make the flashing light flash to emit warning light to warn others in the form of visual sense, so as to warn others that the sulfur melting kettle is discharging pressure and prevent others from approaching to avoid injury.

[0020] 3. The high-pressure gas will push the pressing plate to slide along the screw rod to the side away from the fixed ring. At this time, the pressing plate deforms the third elastic member, and the high-pressure gas in the sulfur melting kettle is discharged through the gap generated between the pressing plate and the fixed ring. When the high-pressure gas in the sulfur melting kettle decreases, the third elastic member pushes the pressing plate to reset to achieve the effects of automatic pressure relief and closing the pressure relief port.

[0021] 4. By holding and rotating the connecting frame, the connecting frame drives the scraper to scrape the inner wall of the discharge pipe, achieving the effect of cleaning and scraping the remaining materials on the inner wall of the discharge pipe. Brief Description of the Drawings

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the pressure relief device for the sulfur melting kettle of the present utility model.

[0023] Figure 2 This is a three-dimensional sectional structural schematic diagram of the bottom plate, sulfur melting kettle and rotating cover of the present utility model.

[0024] Figure 3 This is a three-dimensional exploded structural schematic diagram of the baffle plate, shock-absorbing plate and buffer pad of the present utility model.

[0025] Figure 4 This is a three-dimensional structural schematic diagram of the limit plate, guide rod and second elastic member of the present utility model.

[0026] Figure 5 This is a three-dimensional structural schematic diagram of the alarm, flashing light and buffer pad of the present utility model.

[0027] Figure 6 This is a three-dimensional sectional structural schematic diagram of the fixing ring, pressing plate and screw of the present utility model.

[0028] Figure 7 This is a three-dimensional structural schematic diagram of the discharge pipe, connecting frame and torsion spring of the present utility model.

[0029] The meanings of the reference numerals in the drawings: 1. Bottom plate, 2. Fixed frame, 3. Sulfur melting kettle, 4. Rotating cover, 5. Discharge pipe, 501. Discharge valve, 6. Pressure relief door, 7. Baffle plate, 8. First elastic member, 801. Shock-absorbing plate, 9. Mounting seat, 10. Limit plate, 1001. Guide rod, 11. Second elastic member, 12. Button, 13. Alarm, 14. Flashing light, 15. Fixing ring, 1501. Automatic pressure relief port, 16. Pressing plate, 17. Screw, 18. Third elastic member, 19. Nut, 20. Connecting frame, 2001. Rotating ring, 21. Scraper, 22. Torsion spring, 23. Warning sign, 24. Buffer pad. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] A pressure relief device for a sulfur melting kettle, refer to Figures 1-4As shown in the figure, it includes a bottom plate 1, a fixing frame 2, a sulfur melting kettle 3, a rotating cover 4, a discharge pipe 5 and a discharge valve 501. The fixing frame 2 is installed on the top of the bottom plate 1 by means of bolt connection. The sulfur melting kettle 3 is sleeved in the middle of the fixing frame 2 by means of bolt connection. The rotating cover 4 is arranged on the top of the sulfur melting kettle 3 in a threaded manner. A holding rod is fixedly connected to the eccentric position of the rotating cover 4 by welding, which is convenient for the staff to better hold and rotate the rotating cover 4. The bottom of the sulfur melting kettle 3 is connected and communicated with the discharge pipe 5, and the discharge valve 501 is rotatably arranged on the discharge pipe 5. It also includes a pressure relief door 6, a mounting seat 9, a limiting plate 10, a guide rod 1001, a second elastic member 11 and a buffer assembly. The pressure relief door 6 is rotatably arranged on the front side of the sulfur melting kettle 3. The mounting seat 9 is installed on the front side of the sulfur melting kettle 3 by welding. The mounting seat 9 is located beside the pressure relief door 6 far from the rotating shaft. A limiting plate 10 for limiting the pressure relief door 6 is slidably arranged on the mounting seat 9. The limiting plate 10 slides horizontally on the mounting seat 9. Two upper and lower guide rods 1001 are fixedly connected to the limiting plate 10 by welding. Two second elastic members 11 are fixedly connected between the guide rods 1001 and the mounting seat 9. The second elastic members 11 are wound around the guide rods 1001, and the second elastic members 11 are located on the side of the mounting seat 9 far from the pressure relief door 6. The second elastic members 11 are used to pull the limiting plate 10 to slide and reset towards the side close to the pressure relief door 6. A buffer assembly for buffering the impact force generated when the high-pressure gas in the sulfur melting kettle 3 impacts the pressure relief door 6 is arranged on the sulfur melting kettle 3. The buffer assembly is located on the rotation path of the pressure relief door 6.

[0032] Refer to Figure 3 As shown in the figure, the buffer assembly includes a baffle 7, a first elastic member 8 and a shock-absorbing plate 801. The baffle 7 is installed on the front side of the sulfur melting kettle 3 by means of bolt connection. The baffle 7 is located on the rotation path of the pressure relief door 6. Four first elastic members 8 are fixedly connected to the side of the baffle 7 facing the pressure relief door 6 by welding. The shock-absorbing plate 801 is fixedly connected to each elastic member by welding. When the pressure relief door 6 rotates, it pushes the shock-absorbing plate 801 to compress the first elastic member 8.

[0033] Refer to Figure 4 and Figure 5 As shown in the figure, it also includes a button 12, an alarm 13 and a flashing light 14. The button 12 is embedded in the limiting plate 10. The alarm 13 is installed on the upper part of the front side of the sulfur melting kettle 3 by means of bolt connection. The alarm 13 is located above the pressure relief door 6. The button 12 is electrically connected to the alarm 13. Six flashing lights 14 are installed on the connecting ring of the fixing frame 2 by means of bolt connection. The flashing lights 14 are evenly distributed circumferentially around the connecting ring of the fixing frame 2, which is convenient for people in all directions to notice. The button 12 is electrically connected to the flashing lights 14.

[0034] Refer to Figure 5 and Figure 6As shown, it also includes a fixing ring 15, a pressure plate 16, a screw 17, a third elastic member 18 and a nut 19. An automatic pressure relief port 1501 is opened on the rear side of the molten sulfur kettle 3. A fixing ring 15 is installed on the rear side of the molten sulfur kettle 3 by bolt connection. The fixing ring 15 is located at the automatic pressure relief port 1501. A plurality of screws 17 are fixedly connected to the fixing ring 15 by welding. A pressure plate 16 is slidably arranged on the screws 17. The pressure plate 16 slides laterally along the screw 17. A nut 19 is threadedly arranged on the screw 17. A third elastic member 18 is wound around each screw 17. The nut 19 limits the third elastic member 18 and the pressure plate 16. The third elastic member 18 pushes the pressure plate 16 to fit tightly against the fixing ring 15.

[0035] See also Figure 7 As shown, it also includes a connecting frame 20, a rotating ring 2001, a scraper 21 and a torsion spring 22. The lower part of the discharge pipe 5 is rotatably provided with a rotating ring 2001, and the rotating ring 2001 is located below the discharge valve 501. The side of the rotating ring 2001 is installed with a connecting frame 20 by bolt connection. The lower part of the connecting frame 20 is fixedly connected with a scraper 21 by welding. The scraper 21 extends from the discharge port of the discharge pipe 5. The scraper 21 is driven to rotate along the inner wall of the discharge pipe 5 by moving the connecting frame 20. A torsion spring 22 is fixedly connected between the connecting frame 20 and the discharge pipe 5 by welding.

[0036] See also Figure 1 and Figure 5 As shown, a warning sign 23 for warning is installed on the side of the baffle 7 away from the shock-absorbing plate 801 by means of bolt connection, and a buffer pad 24 is installed on the shock-absorbing plate 801 by means of bolt connection. The warning sign 23 warns of the danger here to prevent others from moving around and approaching at will, and the buffer pad 24 is used to cushion the impact of the pressure relief door 6 on the shock-absorbing plate 801.

[0037] A working method of a molten sulfur kettle pressure relief device:

[0038] When the sulfur melting kettle 3 is to be used, the sample can be added from the upper inlet by rotating and removing the rotary cover 4. When pressure relief is required during the melting process due to excessive pressure in the sulfur melting kettle 3, the alarm 13 is activated by pressing the button 12 to alert others in the form of sound, and at the same time, the flashing light 14 flashes to emit warning light to alert others in the form of visual sense, reminding others to pay attention to safety and not approach the pressure relief area. Then, by pulling the limit plate 10, the guide rod 1001 slides to the side away from the rotating shaft of the pressure relief door 6, so that the pulling is disengaged from the limit of the pressure relief door 6. The high-pressure gas in the sulfur melting kettle 3 impacts the pressure relief door 6, causing the pressure relief door 6 to rotate along the rotating shaft. The pressure relief door 6 will hit the shock-absorbing plate 801, and the shock-absorbing plate 801 is pushed towards the baffle 7 to compress the first elastic member 8. The first elastic member 8 buffers the impact to reduce vibration. Subsequently, the high-pressure gas is discharged from the opening. After the pressure relief is completed, the pressure relief door 6 is rotated in the reverse direction, and the limit plate 10 is released. The second elastic member 11 returns to its original state after losing the force, and then pushes the limit plate 10 to reset, so that the limit plate 10 limits the pressure relief door 6, thus completing the manual pressure relief operation. When the pressure in the sulfur melting kettle 3 is too high and the pressure relief is not carried out in time, the high-pressure gas will push the pressing plate 16 to slide along the screw rod 17 to the side away from the fixed ring 15. At this time, the pressing plate 16 deforms the third elastic member 18 by compression. The high-pressure gas in the sulfur melting kettle 3 is discharged through the gap generated between the pressing plate 16 and the fixed ring 15, achieving the purpose of actively relieving the pressure of the sulfur melting kettle 3. When the high-pressure gas in the sulfur melting kettle 3 decreases, the third elastic member 18 loses the thrust and returns to its original state, and pushes the pressing plate 16 to slide along the screw rod 17 to the side close to the fixed ring 15 to reset. According to the need, by rotating the nut 19, the initial thrust of the third elastic member 18 on the pressing plate 16 is adjusted to control the pressure critical point of the automatic pressure relief of the sulfur melting kettle 3. When the pressure relief is completed, the sulfur paste after melting is discharged from the discharge pipe 5 by rotating the discharge valve 501. When the sulfur melting kettle 3 is depressurized and the sulfur paste after melting is discharged from the discharge pipe 5 by rotating the discharge valve 501, hold and rotate the connecting frame 20, so that the connecting frame 20 drives the scraper 21 to scrape the inner wall of the discharge pipe 5 to prevent the sulfur paste from blocking the discharge pipe 5. At this time, the torsion spring 22 is deformed by torsion under force. After scraping the remaining material on the inner wall of the discharge pipe 5, release the connecting frame 20, and the torsion spring 22 loses the force and returns to its original state, and then drives the connecting frame 20 and the scraper 21 to rotate in the reverse direction and reset.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A molten sulfur kettle pressure relief device, comprising a bottom plate (1), a fixed frame (2), a molten sulfur kettle (3), a rotating cover (4), a discharge pipe (5) and a discharge valve (501), wherein the fixed frame (2) is mounted on the bottom plate (1), the molten sulfur kettle (3) is sleeved in the middle of the fixed frame (2), the molten sulfur kettle (3) is threadedly provided with a rotating cover (4), the molten sulfur kettle (3) is connected and communicated with a discharge pipe (5), and the discharge pipe (5) is rotatably provided with a discharge valve (501), wherein the characteristics are: The invention also comprises a pressure relief door (6), a mounting seat (9), a limiting plate (10), a guide rod (1001), a second elastic member (11) and a buffer assembly. The pressure relief door (6) is rotatably arranged on the molten sulfur kettle (3). The mounting seat (9) is installed on the molten sulfur kettle (3). The mounting seat (9) is located on the side of the pressure relief door (6) away from the rotating shaft. The limiting plate (10) for limiting the pressure relief door (6) is slidably arranged on the mounting seat (9). The limiting plate (10) is fixed on the Two guide rods (1001) are fixedly connected, and two second elastic members (11) are fixedly connected between the guide rods (1001) and the mounting seat (9). The second elastic members (11) are used to pull the limit plate (10) to slide and reset to the side close to the pressure relief door (6). The molten sulfur kettle (3) is provided with a buffer component for buffering the impact force generated when the high-pressure gas in the molten sulfur kettle (3) impacts the pressure relief door (6), and the buffer component is located on the rotation path of the pressure relief door (6).

2. A molten sulfur kettle pressure relief device according to claim 1, characterized in that: The buffer assembly comprises a baffle (7), a first elastic member (8) and a shock absorbing plate (801). The baffle (7) is installed on the molten sulfur kettle (3). The baffle (7) is located on the rotation path of the pressure relief door (6). A plurality of first elastic members (8) are fixedly connected to the baffle (7). Each elastic member is commonly fixedly connected to a shock absorbing plate (801). When the pressure relief door (6) rotates, the shock absorbing plate (801) is pushed to compress the first elastic member (8).

3. A molten sulfur kettle pressure relief device according to claim 2, characterized in that: It also includes a button (12), an alarm (13) and a flashing light (14); the button (12) is installed on the limit plate (10); the alarm (13) is installed on the molten sulfur kettle (3); the button (12) is electrically connected to the alarm (13); a plurality of flashing lights (14) are installed on the connecting ring of the fixing frame (2); and the button (12) is electrically connected to the flashing light (14).

4. A molten sulfur kettle pressure relief device according to claim 3, characterized in that: It also includes a fixing ring (15), a pressure plate (16), a screw (17), a third elastic member (18) and a nut (19). An automatic pressure relief port (1501) is provided on the molten sulfur kettle (3). A fixing ring (15) is installed on the molten sulfur kettle (3). The fixing ring (15) is located at the automatic pressure relief port (1501). A plurality of screws (17) are fixedly connected to the fixing ring (15). A pressure plate (16) is slidingly arranged on the screws (17). A nut (19) is threadedly arranged on the screws (17). A third elastic member (18) is wound around each screw (17). The nut (19) limits the third elastic member (18) and the pressure plate (16). The third elastic member (18) pushes the pressure plate (16) to be close to the fixing ring (15).

5. A molten sulfur kettle pressure relief device according to claim 4, characterized in that: The invention also comprises a connecting frame (20), a rotating ring (2001), a scraper (21) and a torsion spring (22); a rotating ring (2001) is rotatably arranged on the discharge pipe (5); a connecting frame (20) is mounted on the rotating ring (2001); a scraper (21) is fixedly connected to the connecting frame (20); the scraper (21) extends from the discharge port of the discharge pipe (5); the scraper (21) is driven to rotate along the inner wall of the discharge pipe (5) by moving the connecting frame (20); and a torsion spring (22) is fixedly connected between the connecting frame (20) and the discharge pipe (5).

6. A molten sulfur kettle pressure relief device according to claim 5, characterized in that: A holding rod is fixedly connected to the eccentric position of the rotating cover (4).

7. A molten sulfur kettle pressure relief device according to claim 5, characterized in that: The flashing lights (14) are distributed circumferentially around the connecting ring of the fixing frame (2).

8. A molten sulfur kettle pressure relief device according to claim 5, characterized in that: A warning sign (23) for warning is installed on the baffle (7).

9. A molten sulfur kettle pressure relief device according to claim 5, characterized in that: A buffer pad (24) is installed on the shock absorbing plate (801).

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