Filtering type sulfur melting kettle convenient to feed

Abstract

The utility model provides a filtering type sulfur melting kettle convenient for feeding, and solves the problem that the production efficiency is influenced as the conventional sulfur melting kettle needs to be frequently shut down and a bell jar jacket is cleaned. The sulfur melting device comprises a sulfur melting kettle, a filter screen cover component is fixedly arranged in the sulfur melting kettle, a vertically through annular channel is formed between the filter screen cover component and the side wall of the sulfur melting kettle, and a sulfur melting space is formed between the bottom of the filter screen cover component and the bottom of the sulfur melting kettle; a rotating driving device is arranged at the top of the sulfur melting kettle, an output shaft of the rotating driving device is connected with a rotating shaft extending downwards, the lower end of the rotating shaft penetrates through the partition plate and extends into the lower space, the rotating shaft is rotationally and hermetically connected with the partition plate, the lower end of the rotating shaft is fixedly connected with a scraping plate, and the bottom of the scraping plate slidably abuts against the top of the filter screen cover component.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur melting kettles, in particular to a filter type sulfur melting kettle convenient for feeding. Background Art

[0002] Sulfur foams generated by wet desulfurization of sulfur-containing gases in fertilizer plants and coking plants are usually collected and stored in sulfur foam tanks. The sulfur melting kettle is a device used to process these sulfur foams. In the sulfur foam, sulfur exists as tiny particles of elemental sulfur attached to the foam.

[0003] When the sulfur melting kettle operates, sulfur foam is transported into the sulfur melting kettle by compressed air or an alkali-resistant pump. The sulfur melting kettle is a jacketed container, and steam is passed through the jacket to heat the sulfur foam.

[0004] When heated to 70 - 90 °C, the foam of the sulfur foam breaks, and the tiny particles of elemental sulfur quickly aggregate and increase in size, separating from the desulfurization liquid. A desulfurization liquid collector that is easy for the desulfurization liquid to enter and collect but blocks the entry of sulfur particles is installed at the upper part of the sulfur melting kettle. The collected desulfurization liquid is discharged outside the sulfur melting kettle and recycled to the desulfurization system for reuse. The remaining sulfur particles sink to the lower part of the sulfur melting kettle by their own weight. A sulfur melting heater is installed at the lower part of the sulfur melting kettle. The sinking particles continuously accumulate and are continuously heated. When heated to 120 - 130 °C, they become molten sulfur in an easily flowing state, which is discharged outside the sulfur melting kettle and becomes blocky solid sulfur after cooling for recycling.

[0005] The patent with the application number 200920150177.4 discloses a filter type intelligent continuous sulfur melting kettle, which includes a jacketed kettle with an automatic valve installed, a jacketed pipe, a long liquid outlet pipe valve and a sulfur discharge valve, microporous or micro-slit liquid inlet and outlet pipes, a partition plate, and a jacketed bell cover: the upper ends of the long and short liquid outlet pipes fixed on the partition plate extend outside the kettle, and the lower ends extend outside and inside the bell cover jacket respectively; the lower end of the jacketed kettle is connected to the jacketed pipe and the sulfur discharge valve.

[0006] However, in actual use, it is found that there are still some problems when the above filter type intelligent continuous sulfur melting kettle separates the clear liquid from elemental sulfur: when the bell cover jacket is filtering, especially at the top of the bell cover jacket located below the liquid inlet pipe, during the process of the separated sulfur particles flowing downward along the inclined surface at the top of the bell cover jacket, some sulfur particles are likely to adhere and accumulate at the micropores of the bell cover jacket, resulting in some micropores being blocked, and the filtering effect of the bell cover jacket becomes poor. It is necessary to frequently stop the sulfur melting kettle and then clean the bell cover jacket, which affects the production efficiency. Utility Model Content

[0007] In order to solve the problem in the background art that the current sulfur melting kettle needs to be frequently stopped to clean the bell cover jacket, which affects the production efficiency, the utility model provides a filter type sulfur melting kettle convenient for feeding.

[0008] The technical solution of the utility model is: a filter type sulfur melting kettle convenient for feeding, including a sulfur melting kettle, in which a partition plate is fixedly arranged. The partition plate divides the interior of the sulfur melting kettle into two independent precipitation spaces and a lower space. The precipitation space is above the partition plate, and the lower space is below the partition plate;

[0009] A clear liquid outlet is arranged at the top of the sulfur melting kettle, and the bottom of the clear liquid outlet is communicated with the precipitation space;

[0010] The lower space successively includes a filtering space and a sulfur melting space from top to bottom. A reduced-diameter section with a larger top and a smaller bottom is arranged in the area where the filtering space transitions to the sulfur melting space. The inner diameter of the filtering space is larger than that of the sulfur melting space. A filter mesh cover member is fixedly arranged inside the filtering space. There is a vertically penetrating annular channel between the filter mesh cover member and the side wall of the sulfur melting kettle, and the bottom of the annular channel is communicated with the sulfur melting space;

[0011] A rotary driving device is arranged at the top of the sulfur melting kettle. The output shaft of the rotary driving device is connected with a rotating shaft extending downward. The lower end of the rotating shaft passes through the partition plate and extends into the lower space. The rotating shaft is rotationally and sealingly connected with the partition plate. The lower end of the rotating shaft is fixedly connected with a scraper, and the bottom of the scraper slides and abuts against the top of the filter mesh cover member;

[0012] A liquid inlet pipe is arranged at the top of the sulfur melting kettle, and one end of the liquid inlet pipe penetrates into the lower space and extends above the scraper and the filter mesh cover member;

[0013] A desulfurized liquid extraction system is arranged on the sulfur melting kettle. One end of the desulfurized liquid extraction system is communicated with the inside of the filter mesh cover member, and the other end of the desulfurized liquid extraction system is communicated with the precipitation space;

[0014] A downcomer is penetrated through the partition plate. A third valve is arranged on the downcomer. The upper end of the downcomer is communicated with the bottom of the sedimentation space, and the lower end of the downcomer is inserted into the annular channel;

[0015] A heating structure is arranged on the outer side wall of the sulfur melting space. The heating structure corresponds to the inside and outside of the sulfur melting space, and the heating structure is used to heat the inside of the sulfur melting space;

[0016] The bottom of the sulfur melting space contracts inward to form a conical wall structure with a larger top and a smaller bottom. A sulfur discharge port is arranged at the bottom of the conical wall structure. The sulfur discharge port is communicated with the sulfur melting space, and a second valve is arranged at the sulfur discharge port.

[0017] Preferably, the filter mesh cover member includes a filter mesh cover and a collector. The filter mesh cover includes an inclined surface area filter mesh and a side filter mesh which are sequentially connected from top to bottom. The inclined surface area filter mesh is a conical surface or hemispherical surface structure with a narrower top and a wider bottom, and the side filter mesh is a cylindrical structure;

[0018] The collector is a cylindrical box structure with an open top. The top of the collector is fixedly connected to the bottom of the side filter screen, and the internal space of the collector is communicated with the internal space of the filter mesh cover.

[0019] The bottom of the scraper is in sliding contact with the top of the inclined surface area filter screen, and one end of the desulfurized liquid extraction system is communicated with the internal space of the collector.

[0020] Preferably, the collector includes an annular bottom plate at the bottom. The inner side of the annular bottom plate is fixedly connected with a convex plate. The convex plate is a conical surface or a hemispherical surface structure with a narrower upper part and a wider lower part. The outer side of the annular bottom plate is fixedly connected with a vertically arranged side plate. The side plate is a vertically arranged cylindrical structure. A liquid accumulation tank is formed between the convex plate and the side plate, and one end of the desulfurized liquid extraction system is communicated with the liquid accumulation tank.

[0021] Preferably, a heat conducting rod extending upward is fixedly arranged at the inner top of the conical wall structure. The upper end of the heat conducting rod passes through the collector and contacts the inclined surface area filter screen.

[0022] Preferably, one end of the liquid inlet pipe located inside the sulfur melting kettle is fixedly connected with a fluid distributor. The bottom of the fluid distributor is provided with a plurality of fluid outlets, and the fluid outlets are evenly distributed above the filter mesh cover component.

[0023] Preferably, the fluid distributor includes an annular pipe. A plurality of fluid outlets are opened along the extending direction at the bottom of the annular pipe. The annular pipe is sleeved outside the rotating shaft, and one end of the liquid inlet pipe located inside the sulfur melting kettle is fixedly connected and communicated with the annular pipe.

[0024] Preferably, the partition plate includes an annular plate and a conical inclined panel fixedly arranged inside the annular plate. The top of the inclined panel is higher than the annular plate, and the outer side of the annular plate is fixedly connected with the inner wall of the sulfur melting kettle;

[0025] The downcomer penetrates through the annular plate, and the upper end of the downcomer is lower than the top of the inclined panel;

[0026] The rotating shaft passes through the top of the inclined panel and is rotationally and sealingly connected with the inclined panel.

[0027] Preferably, the desulfurized liquid extraction system includes a chemical pump fixedly arranged on the outer wall of the sulfur melting kettle. The liquid inlet of the chemical pump is connected with one end of the riser pipe. The other end of the riser pipe penetrates into the sulfur melting kettle and then penetrates into the filter mesh cover component again. The liquid outlet of the chemical pump is connected with one end of the drain pipe. A first valve is arranged on the drain pipe. The other end of the drain pipe penetrates into the sulfur melting kettle and is communicated with the upper part of the sedimentation space.

[0028] Preferably, a liquid level sensor is arranged at the top of the sulfur melting kettle, and the liquid level sensor is used to monitor the liquid level in the precipitation space.

[0029] Preferably, a filter plate is fixedly connected between the outer side of the bottom of the filter screen cover member and the side wall of the sulfur melting kettle. The filter plate is located at the bottom of the annular channel, and the filter plate is provided with a filter hole structure.

[0030] Advantages of the present utility model: When the device is in use, the rotation driving device drives the rotating shaft to drive the scraper to rotate. The scraper scrapes off the sulfur particles on the top of the filter screen cover member. The scraped sulfur particles flow downward along with the gravity and other sulfur particles separated from the sulfur foam and enter the sulfur melting space. The frequency of shutdown maintenance of the sulfur melting kettle is reduced, and the production efficiency of the sulfur melting kettle is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the main structure of Embodiment 1;

[0033] Figure 2 For Figure 1 the structural schematic diagram of the filter screen cover member in

[0034] In the figure, 1. Sulfur melting kettle, 2. Partition plate, 3. Liquid inlet pipe, 4. Fluid disperser, 5. Filter screen cover, 501. Inclined surface area filter screen, 502. Side filter screen, 6. Collector, 601. Annular bottom plate, 602. Raised plate, 603. Side plate, 7. Annular channel, 8. Downcomer, 9. Chemical pump, 10. Uptake pipe, 11. First valve, 12. Rotation driving device, 13. Rotating shaft, 14. Scraper, 15. Sulfur melting space, 16. Jacket outer wall, 17. Heating chamber, 18. Heating fluid inlet, 19. Heating fluid outlet, 20. Sulfur discharge port, 21. Second valve, 22. Precipitation space, 23. Clear liquid outlet, 24. Liquid level sensor, 25. Heat conducting rod, 26. Filter plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0036] Embodiment 1: A filter type sulfur melting kettle for convenient feeding, asFigure 1 As shown, it includes a molten sulfur kettle 1, and a partition plate 2 is fixedly arranged inside the molten sulfur kettle 1. The partition plate 2 divides the interior of the molten sulfur kettle 1 into two independent precipitation spaces 22 and a lower space. The precipitation space 22 is located above the partition plate 2, and the lower space is located below the partition plate 2.

[0037] A clear liquid outlet 23 is arranged at the top of the molten sulfur kettle 1, and the bottom of the clear liquid outlet 23 is communicated with the precipitation space 22.

[0038] In order to facilitate the monitoring of the liquid level in the precipitation space 22, so as to timely pump out the clear liquid (desulfurized liquid) through the clear liquid outlet 23 by using a pump body, as Figure 1 shown, a liquid level sensor 24 is arranged at the top of the molten sulfur kettle 1, and the liquid level sensor 24 is used to monitor the liquid surface in the precipitation space 22.

[0039] The lower space successively includes a filtering space and a molten sulfur space 15 from top to bottom. A reduced-diameter section with a larger upper part and a smaller lower part is arranged in the area where the filtering space transitions to the molten sulfur space 15, and the inner diameter of the filtering space is larger than that of the molten sulfur space 15. In this embodiment, the top of the reduced-diameter section is connected to the bottom of the filtering space by welding. Function of the reduced-diameter section: reduce the inner diameter of the molten sulfur space 15, so that the heating heat can more easily penetrate into the central area of the molten sulfur space 15.

[0040] A heating structure is arranged on the outer side wall of the molten sulfur space 15, and the heating structure corresponds to the inside and outside of the molten sulfur space 15. The heating structure is used to heat the interior of the molten sulfur space 15. As Figure 1 shown, the heating structure includes a jacket outer wall 16 arranged on the side wall of the molten sulfur kettle 1. A sealed heating cavity 17 is formed between the jacket outer wall 16 and the side wall of the molten sulfur kettle 1. A heating fluid inlet 18 is arranged at the bottom of the jacket outer wall 16, and a heating fluid outlet 19 is arranged at the upper part of the jacket outer wall 16. Both the heating fluid inlet 18 and the heating fluid outlet 19 are communicated with the heating cavity 17. In this embodiment, the heating fluid used is steam.

[0041] The bottom of the molten sulfur space 15 contracts inward to form a conical wall structure with a larger upper part and a smaller lower part. A sulfur discharge port 20 is arranged at the bottom of the conical wall structure. The sulfur discharge port 20 is communicated with the molten sulfur space 15, and a second valve 21 is arranged at the sulfur discharge port 20.

[0042] A filter mesh cover member is fixedly arranged inside the filtering space. An annular channel 7 that is vertically permeable is provided between the filter mesh cover member and the side wall of the molten sulfur kettle 1. A molten sulfur space 25 is provided between the bottom of the filter mesh cover member and the bottom of the molten sulfur kettle 1.

[0043] Specifically, as Figure 2As shown, the filter screen component includes a filter screen 5 and a collector 6. The filter screen 5 includes an inclined surface area filter screen 501 and a side filter screen 502 that are connected in sequence from top to bottom. The inclined surface area filter screen 501 is a hemispherical surface structure that is narrower at the top and wider at the bottom. In other embodiments, the inclined surface area filter screen 501 can also adopt a conical surface structure that is narrower at the top and wider at the bottom. The side filter screen 502 is a cylindrical structure.

[0044] The collector 6 is a cylindrical box structure with an upper opening. The top of the collector 6 is fixedly connected to the bottom of the side filter screen 502, and the internal space of the collector 6 is communicated with the internal space of the filter screen 5.

[0045] To facilitate the centralized collection of the desulfurization liquid in the collector 6, as Figure 2 shown, the collector 6 includes an annular bottom plate 601 located at the bottom. A convex plate 602 is fixedly connected to the inner side of the annular bottom plate 601. The convex plate 602 is a hemispherical surface structure that is narrower at the top and wider at the bottom. In other embodiments, the convex plate 602 can also adopt a conical surface structure that is narrower at the top and wider at the bottom. A vertically arranged side plate 603 is fixedly connected to the outer side of the annular bottom plate 601. The side plate 603 is a vertically arranged cylindrical structure. A liquid collection tank is formed between the convex plate 602 and the side plate 603.

[0046] To quickly increase the temperature of the sulfur particles adhering to the top of the inclined surface area filter screen 501 and make the surface of the sulfur particles in contact with the inclined surface area filter screen 501 in a molten state, so as to facilitate the scraper 14 to smoothly scrape off some relatively firmly adhered sulfur particles, as Figure 1 shown, a heat conduction rod 25 extending upward is fixedly provided at the inner top of the conical wall structure. The upper end of the heat conduction rod 25 passes through the collector 6 and contacts the inclined surface area filter screen 501.

[0047] A liquid inlet pipe 3 is provided at the top of the sulfur melting kettle 1. One end of the liquid inlet pipe 3 penetrates into the lower space and extends above the scraper 14 and the filter screen component. To facilitate the uniform dispersion of the sulfur foam onto the filter screen component, as Figure 1 shown, a fluid disperser 4 is fixedly connected to the end of the liquid inlet pipe 3 located inside the sulfur melting kettle 1. A plurality of fluid outlets are provided at the bottom of the fluid disperser 4, and the fluid outlets are evenly distributed above the filter screen component. Specifically, the fluid disperser 4 includes an annular pipe. A plurality of fluid outlets are opened along the extending direction at the bottom of the annular pipe. The annular pipe is sleeved outside the rotating shaft 13. The end of the liquid inlet pipe 3 located inside the sulfur melting kettle 1 is fixedly connected to and communicated with the annular pipe.

[0048] A desulfurization liquid extraction system is provided on the sulfur melting kettle 1. The desulfurization liquid extraction system includes a chemical pump 9 fixedly arranged on the outer wall of the sulfur melting kettle 1. The liquid inlet of the chemical pump 9 is connected to one end of the riser pipe 10. The other end of the riser pipe 10 penetrates into the sulfur melting kettle 1 and then penetrates into the filter mesh component again and is communicated with the liquid gathering tank of the collector 6. The liquid outlet of the chemical pump 9 is connected to one end of the drain pipe. A first valve 11 is provided on the drain pipe. The other end of the drain pipe penetrates into the sulfur melting kettle 1 and is communicated with the upper part of the sedimentation space 22.

[0049] A rotary drive device 12 is provided on the top of the sulfur melting kettle 1. In this embodiment, the rotary drive device 12 is a reduction motor. The output shaft of the rotary drive device 12 is connected with a rotating shaft 13 extending downward. The lower end of the rotating shaft 13 passes through the partition plate 2 and extends into the lower space. A sealing bearing is embedded on the partition plate 2. The rotating shaft 13 is rotationally and hermetically connected with the partition plate 2 through the sealing bearing. The lower end of the rotating shaft 13 is fixedly connected with a scraper 14. The bottom of the scraper 14 is in sliding contact with the top of the inclined surface area filter screen 501.

[0050] There is an upper and lower through annular channel 7 between the filter mesh component and the side wall of the sulfur melting kettle 1. The bottom of the annular channel 7 is communicated with the sulfur melting space 25. A filter plate 26 is fixedly connected between the outer side of the bottom of the filter mesh component and the side wall of the sulfur melting kettle 1. The filter plate 26 is located at the bottom of the annular channel 7. The filter plate 26 is provided with a filter hole structure for sulfur particles to pass through. The filter plate 26 is used to slow down the downward flow rate of the sulfur foam in the annular channel 7. A downcomer 8 penetrates through the partition plate 2. The upper end of the downcomer 8 is communicated with the bottom of the sedimentation space 22. The lower end of the downcomer 8 is inserted into the annular channel 7. In order to facilitate the collection of the precipitated sulfur particles and other impurities, as Figure 1 shown, the partition plate 2 includes an annular plate and a conical inclined panel fixedly arranged on the inner side of the annular plate. The top of the inclined panel is higher than the annular plate. The outer side of the annular plate is fixedly connected with the inner wall of the sulfur melting kettle 1.

[0051] The downcomer 8 penetrates through the annular plate. A third valve is provided on the downcomer 8. In this embodiment, the third valve is an electromagnetic valve. The upper end of the downcomer 8 is communicated with the bottom of the sedimentation space 22. The lower end of the downcomer 8 is inserted into the annular channel 7, and the upper end of the downcomer 8 is lower than the top of the inclined panel. The rotating shaft 13 passes through the top of the inclined panel and is rotationally and hermetically connected with the inclined panel.

[0052] Working principle: During use, the sulfur foam enters the lower space through the inlet pipe 3 and is evenly sprinkled onto the inclined surface area filter screen 501 of the filter mesh 5 through a plurality of fluid outlets at the bottom of the fluid disperser 4. During the flow of the sulfur foam along the inclined surface area filter screen 501 and the side filter screen 502, the clear liquid and elemental sulfur are separated. The clear liquid seeps through the filter mesh 5 and is collected in the collector 6, and the elemental sulfur enters the lower sulfur melting space 15 along the annular channel 7.

[0053] The filter plate 26 installed at the bottom of the annular channel 7 is for supporting the filter mesh cover member and slowing down the downward flow rate of the sulfur foam in the annular channel 7, so as to enable the sulfur foam to form a certain dynamic buffer liquid level in the annular channel 7 above the filter plate 26, and enable the clear liquid in the sulfur foam flowing into the annular channel 7 to have more time to seep through the side of the filter mesh cover 5 and enter the filter mesh cover 5 to separate from the sulfur particles.

[0054] The desulfurized liquid extraction system (chemical pump 9, riser pipe 10 and drain pipe) sends the clear liquid in the collector 6 to the precipitation space 22 above the partition plate 2 for precipitation. The liquid level sensor 24 monitors the liquid level in the precipitation space 22 to facilitate timely extraction of the clear liquid (desulfurized liquid) through the clear liquid outlet 23 by means of a pump body. The third valve (solenoid valve) on the downcomer 8 is periodically opened to re-send the precipitate (mostly sulfur particles) into the annular channel 7 through the downcomer 8.

[0055] After the sulfur particles are heated and melted by the steam passing through the heating chamber 17 in the sulfur melting space 15, they are discharged from the sulfur discharge port 20 below.

[0056] The heat conducting rod 25 thermally connects the sulfur melting space 15 with the inclined plane area filter mesh 501. Since the temperature of the sulfur melting space 15 is higher than that of the inclined plane area filter mesh 501, it speeds up the heating of the inclined plane area filter mesh 501, so that a molten state is formed on the side of the sulfur particles in contact with the inclined plane area filter mesh 501, facilitating the scraper 14 to smoothly scrape off some relatively sticky sulfur particles.

[0057] The rotary drive device 12 drives the rotating shaft 13 to drive the scraper 14 to rotate. The scraper 14 scrapes off the sulfur particles on the inclined plane area filter mesh 501. The scraped sulfur particles flow downward along with the gravity and other sulfur particles separated from the sulfur foam and enter the sulfur melting space 15.

[0058] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A filter type sulfur melting kettle for convenient feeding, characterized in that: It includes a sulfur melting kettle (1). Inside the sulfur melting kettle (1), a partition plate (2) is fixedly arranged. The partition plate (2) divides the interior of the sulfur melting kettle (1) into two independent precipitation spaces (22) and a lower space. The precipitation space (22) is located above the partition plate (2), and the lower space is located below the partition plate (2). At the top of the sulfur melting kettle (1), a clear liquid outlet (23) is provided. The bottom of the clear liquid outlet (23) is communicated with the precipitation space (22). The lower space successively includes a filtration space and a sulfur melting space (15) from top to bottom. A reduced diameter section with a larger upper part and a smaller lower part is provided in the area where the filtration space transitions to the sulfur melting space (15). The inner diameter of the filtration space is larger than the inner diameter of the sulfur melting space (15). Inside the filtration space, a filter mesh cover member is fixedly arranged. There is an annular channel (7) that is vertically penetrated between the filter mesh cover member and the side wall of the sulfur melting kettle (1). The bottom of the annular channel (7) is communicated with the sulfur melting space (15). At the top of the sulfur melting kettle (1), a rotary drive device (12) is provided. The output shaft of the rotary drive device (12) is connected with a rotating shaft (13) extending downward. The lower end of the rotating shaft (13) passes through the partition plate (2) and extends into the lower space. The rotating shaft (13) is rotationally and sealingly connected with the partition plate (2). The lower end of the rotating shaft (13) is fixedly connected with a scraper (14). The bottom of the scraper (14) slides and abuts against the top of the filter mesh cover member. At the top of the sulfur melting kettle (1), a liquid inlet pipe (3) is provided. One end of the liquid inlet pipe (3) penetrates into the lower space and extends above the scraper (14) and the filter mesh cover member. A desulfurized liquid extraction system is provided on the sulfur melting kettle (1). One end of the desulfurized liquid extraction system is communicated with the inside of the filter mesh cover member, and the other end of the desulfurized liquid extraction system is communicated with the precipitation space (22). A downcomer (8) is penetrated through the partition plate (2). A third valve is provided on the downcomer (8). The upper end of the downcomer (8) is communicated with the bottom of the precipitation space (22), and the lower end of the downcomer (8) is inserted into the annular channel (7). A heating structure is provided on the outer side wall of the sulfur melting space (15). The heating structure corresponds to the inside and outside of the sulfur melting space (15), and the heating structure is used to heat the inside of the sulfur melting space (15). The bottom of the sulfur melting space (15) contracts inward to form a conical wall structure with a larger upper part and a smaller lower part. A sulfur discharge port (20) is provided at the bottom of the conical wall structure. The sulfur discharge port (20) is communicated with the sulfur melting space (15). A second valve (21) is provided at the sulfur discharge port (20).

2. The filter type sulfur melting kettle facilitating feeding according to claim 1, characterized in that: The filter mesh cover member includes a filter mesh cover (5) and a collector (6). The filter mesh cover (5) includes an inclined surface area filter mesh (501) and a side filter mesh (502) that are successively connected from top to bottom. The inclined surface area filter mesh (501) is a conical surface or hemispherical surface structure with a narrower upper part and a wider lower part. The side filter mesh (502) is a cylindrical structure. The collector (6) is a cylindrical box structure with an upper opening. The top of the collector (6) is fixedly connected with the bottom of the side filter mesh (502). The internal space of the collector (6) is communicated with the internal space of the filter mesh cover (5). The bottom of the scraper (14) is in sliding contact with the top of the inclined surface area filter screen (501), and one end of the desulfurized liquid extraction system communicates with the internal space of the collector (6).

3. The filter-type sulfur melting kettle for convenient feeding according to claim 2, characterized in that: The collector (6) includes an annular bottom plate (601) located at the bottom. A convex plate (602) is fixedly connected to the inner side of the annular bottom plate (601). The convex plate (602) has a tapered surface or a hemispherical surface structure that is narrower at the top and wider at the bottom. A vertically arranged side plate (603) is fixedly connected to the outer side of the annular bottom plate (601). The side plate (603) is a vertically arranged cylindrical structure. A liquid accumulation tank is formed between the convex plate (602) and the side plate (603). One end of the desulfurized liquid extraction system communicates with the liquid accumulation tank.

4. A filter-type sulfur melting kettle for convenient feeding according to claim 2 or 3, characterized in that: A heat conducting rod (25) extending upward is fixedly provided at the inner top of the conical wall structure. The upper end of the heat conducting rod (25) passes through the collector (6) and contacts the inclined surface area filter screen (501).

5. The filter-type sulfur melting kettle for convenient feeding as described in claim 1, characterized in that: One end of the liquid inlet pipe (3) located inside the sulfur melting kettle (1) is fixedly connected with a fluid distributor (4). A plurality of fluid outlets are provided at the bottom of the fluid distributor (4), and the fluid outlets are evenly distributed above the filter mesh member.

6. The filter type sulfur melting kettle facilitating feeding according to claim 5, characterized in that: The fluid distributor (4) includes an annular pipe. A plurality of fluid outlets are opened along the extending direction at the bottom of the annular pipe. The annular pipe is sleeved outside the rotating shaft (13). One end of the liquid inlet pipe (3) located inside the sulfur melting kettle (1) is fixedly connected and communicated with the annular pipe.

7. The filter type sulfur melting kettle convenient for feeding according to claim 1, characterized in that: The partition plate (2) includes an annular plate and a conical inclined panel fixedly provided on the inner side of the annular plate. The top of the inclined panel is higher than the annular plate. The outer side of the annular plate is fixedly connected with the inner wall of the sulfur melting kettle (1). The downcomer (8) passes through the annular plate, and the upper end of the downcomer (8) is lower than the top of the inclined panel. The rotating shaft (13) passes through the top of the inclined panel and is rotationally and sealingly connected with the inclined panel.

8. The filter type sulfur melting kettle facilitating feeding according to claim 1, wherein: The desulfurized liquid extraction system includes a chemical pump (9) fixedly provided on the outer wall of the sulfur melting kettle (1). The liquid inlet of the chemical pump (9) is connected with one end of the riser pipe (10). The other end of the riser pipe (10) penetrates into the sulfur melting kettle (1) and then penetrates into the filter mesh member again. The liquid outlet of the chemical pump (9) is connected with one end of the drain pipe. A first valve (11) is provided on the drain pipe. The other end of the drain pipe penetrates into the sulfur melting kettle (1) and communicates with the upper part of the precipitation space (22).

9. The filter type sulfur melting kettle facilitating feeding according to claim 1, characterized in that: A liquid level sensor (24) is provided at the top of the sulfur melting kettle (1). The liquid level sensor (24) is used to monitor the liquid level in the precipitation space (22).

10. A filter-type sulfur melting kettle for convenient feeding according to claim 1, characterized in that: A filter plate (26) is fixedly connected between the outer side of the bottom of the filter mesh member and the side wall of the sulfur melting kettle (1). The filter plate (26) is located at the bottom of the annular channel (7). The filter plate (26) is provided with a filter hole structure.

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