A three-way material distribution valve and feeding system

Abstract

The utility model discloses a three-way material distribution valve, including a valve body and a valve plate, the valve body having a feed port, a first material outlet and a second material outlet, and the valve plate having an inlet and an outlet. There is a gap between the outlet of the valve plate and the top of the spacing mechanism, and the valve plate is relatively short, which enhances the passability of block sulfur and effectively avoids blockage; at the same time, when the valve plate of the utility model is located at the extreme positions on the left and right sides during rotation, the material landing positions are all located in the first material outlet or the second material outlet, ensuring that all materials fall into the target material outlet, enhancing the adjustability and adaptability of the three-way material distribution valve. The utility model also provides a feeding system, including the above-mentioned three-way material distribution valve, to avoid blockage of the feeding system caused by fluctuations in the quality of solid sulfur, improve the stability of molten sulfur production, reduce the safety risks of molten sulfur production, and improve the on-site environment of molten sulfur.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment and peripheral supporting facilities, in particular to a three-way material distribution valve and a feeding system. Background Art

[0002] The original design of the sulfur melting device was to use the byproduct of industrial production: solid shaped granular sulfur as the production raw material. In order to reduce production costs, many companies have used a certain proportion or even a large amount of solid block powder sulfur mined from mines. Compared with granular sulfur, lump powder sulfur has a lower cost advantage, but lump powder sulfur has a high impurity content, a large moisture content, and is a mixture of large blocks and powders. It brings many problems in actual production and use. In particular, lump powder sulfur is prone to cause blockage of the sulfur melting material distribution and feeding system, causing a large fluctuation in production load and a decrease in production capacity. It has a certain impact on the normal production of the subsequent sulfur acid-making device, and even caused safety and environmental accidents such as overflow of the sulfur melting tank due to the large fluctuation in production load.

[0003] The flow chart of the material distribution and feeding system of the prior art sulphur melting device is as follows: Figure 1 As shown, the solid sulfur from the previous process is divided by the three-way dividing valve in front of the No. 7 belt and enters the first and second phase devices respectively. The sulfur entering the second phase device is transferred by the No. 7 and No. 8 belts and then enters the second phase unloading three-way valve for division. The unloading three-way valve first divides 1 into 2, then 2 into 4, and is divided into 4 channels. The sulfur enters the 4 sulfur melting tanks No. 1, 2, 3, and 4 through 4 unloading chutes. The original dividing and feeding system has the following problems:

[0004] The structure of the distributing valve determines that it is mainly suitable for distributing solid particles with uniform particle size and powdery materials with good fluidity. When using lump powder sulfur for production, due to the large volume of the lumps, high dust humidity and poor fluidity, the distributing balance is poor, which can easily cause the entire three-way distributing valve to be blocked and the production load to fluctuate greatly.

[0005] The actual working status of the three-way material distribution valve and the three material distribution valve positions are as follows Figure 2 As shown in a, b, c, and d, a is the actual working state of the three-way material distribution valve; b is feeding from both No. 1 and No. 2 material ports; c is feeding from No. 1 material port; d is feeding from No. 2 material port; Figure 2 It can be seen that in actual use, due to the influence of factors such as the installation position of the electric roller of the upper conveyor belt and the amount of feed, the sulfur entering the three-way distributing valve cannot accurately fall into the center position of the three-way distributing valve, and a bias flow phenomenon will occur. When distributing granular sulfur, the bias flow does not affect the stability of the distributing, but the opening of the valve position is inconsistent. Figure 2In a, the flow is biased toward the 2-way feed port. At this time, the opening of the valve plate and the feed port 2 is small, which can ensure the amount of material entering the feed port 2, and the excess material flows into the feed port 1. If the material is lump sulfur, the large lump sulfur is easy to block the smaller opening of the feed port 2, causing all the sulfur to enter the feed port 1, and the amount of material discharged from the molten sulfur tank corresponding to the feed port 1 will suddenly increase; powdered sulfur is easy to accumulate and block the three-way feed valve due to its high humidity. As the proportion of lump sulfur used by the company increases, the instability and volatility increase accordingly. Utility Model Content

[0006] The purpose of the utility model is to provide a three-way material distribution valve and a feeding system to solve the problems existing in the above-mentioned prior art, to avoid the blockage of the feeding system caused by the fluctuation of the quality of solid sulfur to the greatest extent, to improve the stability of molten sulfur production, to reduce the safety risks of molten sulfur production, and to improve the on-site environment of molten sulfur.

[0007] To achieve the above purpose, the utility model provides the following solutions:

[0008] The utility model provides a three-way material dispensing valve, comprising:

[0009] A valve body, wherein the valve body has a feed port, a first discharge port, and a second discharge port, wherein the feed port is located at the top of the valve body, the first discharge port and the second discharge port are both located at the bottom of the valve body, and the first discharge port and the second discharge port are separated by a spacing mechanism;

[0010] A valve plate, the valve plate is arranged in the inner cavity of the valve body and the two are hingedly connected, the valve plate has an inlet and an outlet, the inlet is connected to the feed inlet, and the inlet is also connected to the outlet; there is a gap between the outlet and the top of the spacing mechanism, the valve plate rotates relative to the valve body, so that the outlet can be connected to the first outlet and the second outlet;

[0011] Taking the plane parallel to the feed port as the projection plane, when the guide outlet is only connected with the first discharge port, the projection of the guide outlet on the projection plane is located on the side of the top of the spacing mechanism close to the first discharge port; when the guide outlet is only connected with the second discharge port, the projection of the guide outlet on the projection plane is located on the side of the top of the spacing mechanism close to the second discharge port; when both the first discharge port and the second discharge port are connected with the guide outlet, the projection of the guide outlet on the projection plane is located above the top of the spacing mechanism.

[0012] Preferably, the valve body is an inverted Y-shaped structure, and the spacing mechanism has an inclined surface which gradually inclines from top to bottom toward the first discharge port and the second discharge port, and the tops of the two inclined surfaces intersect to form the top of the spacing mechanism.

[0013] Preferably, the feed port is connected to a guide section, the guide section is connected to the inner wall of the valve body, and the diameter of the introduction port is larger than the diameter of the guide section.

[0014] Preferably, the valve plate is a closed structure, and the cross-sectional area of ​​the inlet is larger than the cross-sectional area of ​​the outlet.

[0015] Preferably, a baffle is provided on the inner side wall of the outlet, and the baffle is arranged at an angle to enhance the closing degree of the valve plate.

[0016] Preferably, the number of the baffles is two groups, and the two baffles are symmetrically arranged with the midline of the spacing mechanism as the symmetry axis;

[0017] The baffle is connected to the valve plate by welding.

[0018] Preferably, the valve plate is connected to a connecting rod mechanism, and the connecting rod mechanism can drive the valve plate to rotate relative to the valve body.

[0019] The utility model also provides a feeding system, comprising the above-mentioned three-way material distribution valve.

[0020] Preferably, the feeding system comprises:

[0021] A first three-way material dispensing valve, wherein the feed port of the first three-way material dispensing valve is connected to a material source;

[0022] A second three-way dividing valve, wherein the first discharge port of the first three-way dividing valve is connected with the first feed port of the second three-way dividing valve by a conveyor belt, the first discharge port of the second three-way dividing valve is connected with a third three-way dividing valve, the second discharge port of the second three-way dividing valve is connected with a fourth three-way dividing valve, the third three-way dividing valve and the fourth three-way dividing valve are respectively connected with a sulfur melting tank by a discharge chute, and an agitator is arranged in the sulfur melting tank.

[0023] Preferably, the discharge chute is connected to the sulfur melting tank by a quantitative feeder.

[0024] Compared with the prior art, the utility model has achieved the following technical effects: the three-way material dispensing valve of the utility model comprises a valve body and a valve plate, the valve body has a feed port, a first discharge port and a second discharge port, the feed port is located at the top of the valve body, the first discharge port and the second discharge port are both located at the bottom of the valve body, and the first discharge port and the second discharge port are separated by a spacing mechanism; the valve plate is arranged in the inner cavity of the valve body and the two are hingedly connected, the valve plate has an inlet and an outlet, the inlet is connected to the feed port, and the inlet is also connected to the outlet; there is a gap between the outlet and the top of the spacing mechanism , the valve plate rotates relative to the valve body so that the guide outlet can be connected with the first outlet and the second outlet; taking the plane parallel to the feed port as the projection plane, when the guide outlet is only connected with the first outlet, the projection of the guide outlet on the projection plane is located on the side of the top of the spacing mechanism close to the first outlet; when the guide outlet is only connected with the second outlet, the projection of the guide outlet on the projection plane is located on the side of the top of the spacing mechanism close to the second outlet; when both the first outlet and the second outlet are connected with the guide outlet, the projection of the guide outlet on the projection plane is located above the top of the spacing mechanism.

[0025] The three-way distributing valve of the utility model has a gap between the guide outlet of the valve plate and the top of the spacing mechanism. Compared with the valve plate in the prior art, the valve plate of the utility model is shorter, which enhances the passability of block sulfur and effectively avoids blockage. At the same time, during the rotation of the valve plate of the utility model, the guide outlet of the valve plate can be connected with the first discharge port and the second discharge port. Specifically, when the guide outlet is only connected with the first discharge port, the projection of the guide outlet on the projection plane is located on the top of the spacing mechanism, close to the first discharge port, and when the guide outlet is only connected with the second discharge port, the projection of the guide outlet on the projection plane is located on the top of the spacing mechanism, close to the second discharge port. By reasonably setting the rotation position of the valve plate and cooperating with the spacing mechanism, when the valve plate is located at the extreme positions on the left and right sides during rotation, the material landing positions are all located in the first discharge port or the second discharge port, ensuring that all materials fall into the target discharge port, thereby enhancing the adjustability and adaptability of the three-way distributing valve.

[0026] The utility model also provides a feeding system, including the above-mentioned three-way feeding valve, to avoid clogging of the feeding system caused by fluctuations in the quality of solid sulfur, improve the stability of molten sulfur production, reduce the safety risks of molten sulfur production, and improve the on-site environment of molten sulfur. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of a feeding system in the prior art;

[0029] Figure 2 It is a structural schematic diagram of a three-way material distribution valve in the prior art.

[0030] Figure 1 and Figure 2 Middle: 1, feed inlet No. 1; 2, feed inlet No. 2.

[0031] Figure 3 It is a structural schematic diagram of different states of the three-way material distribution valve disclosed in the embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the feeding system disclosed in the embodiment of the utility model.

[0033] Figure 3 and Figure 4 In: 1. Valve body; 2. Valve plate; 3. Feed inlet; 4. First discharge outlet; 5. Second discharge outlet; 6. Spacer mechanism; 7. Inlet; 8. Outlet; 9. Guide section; 10. Baffle; 11. Connecting rod mechanism; 12. First three-way dispensing valve; 13. Second three-way dispensing valve; 14. Third three-way dispensing valve; 15. Fourth three-way dispensing valve; 16. Conveyor belt; 17. Discharge chute; 18. Dosing feeder; 19. Molten sulfur tank. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The purpose of the utility model is to provide a three-way material distribution valve and a feeding system to solve the problems existing in the above-mentioned prior art, to avoid the blockage of the feeding system caused by the fluctuation of the quality of solid sulfur to the greatest extent, to improve the stability of molten sulfur production, to reduce the safety risks of molten sulfur production, and to improve the on-site environment of molten sulfur.

[0036] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Embodiment 1

[0038] This utility model provides a three-way material distribution valve, please refer to Figure 3, comprising a valve body 1 and a valve plate 2, the valve body 1 having a feed port 3, a first discharge port 4 and a second discharge port 5, the feed port 3 being located at the top of the valve body 1, the first discharge port 4 and the second discharge port 5 being located at the bottom of the valve body 1, and the first discharge port 4 and the second discharge port 5 being separated by a spacing mechanism 6; the valve plate 2 is arranged in the inner cavity of the valve body 1 and the two are hingedly connected, the valve plate 2 having an inlet 7 and an outlet 8, the inlet 7 being connected to the feed port 3, and the inlet 7 being also connected to the outlet 8; there is a gap between the outlet 8 and the top of the spacing mechanism 6, the valve plate 2 rotates relative to the valve body 1, so that It is obtained that the guide outlet 8 can be connected with the first discharge port 4 and the second discharge port 5; taking the plane parallel to the feed port 3 as the projection plane, when the guide outlet 8 is only connected with the first discharge port 4, the projection of the guide outlet 8 on the projection plane is located on the top of the spacing mechanism 6, close to the first discharge port 4, when the guide outlet 8 is only connected with the second discharge port 5, the projection of the guide outlet 8 on the projection plane is located on the top of the spacing mechanism 6, close to the second discharge port 5, when the first discharge port 4 and the second discharge port 5 are both connected with the guide outlet 8, the projection of the guide outlet 8 on the projection plane is located above the top of the spacing mechanism 6.

[0039] In the three-way distributing valve of the utility model, there is a gap between the guide outlet 8 of the valve plate 2 and the top of the spacing mechanism 6. Compared with the valve plate in the prior art, the valve plate 2 of the utility model is shorter, which enhances the permeability of block sulfur and effectively avoids blockage; at the same time, during the rotation of the valve plate 2 of the utility model, the guide outlet 8 of the valve plate 2 can be connected with the first discharge port 4 and the second discharge port 5. Specifically, when the guide outlet 8 is only connected with the first discharge port 4, the projection of the guide outlet 8 on the projection plane is located on the top of the spacing mechanism 6, close to the first discharge port 4. When the guide outlet 8 is only connected with the second discharge port 5, the projection of the guide outlet 8 on the projection plane is located on the top of the spacing mechanism 6, close to the second discharge port 5. By reasonably setting the rotation position of the valve plate 2 and cooperating with the spacing mechanism 6, when the valve plate 2 is located at the extreme positions on the left and right sides during rotation, the material landing positions are all located in the first discharge port 4 or the second discharge port 5. For details, see Figure 3 When the middle valve plate 2 is in state b or c, it ensures that all materials fall into the target discharge port, thereby enhancing the adjustability and adaptability of the three-way material distribution valve.

[0040] Among them, the valve body 1 is an inverted Y-shaped structure, and the spacer mechanism 6 has an inclined surface which gradually inclines from top to bottom toward the first discharge port 4 and the second discharge port 5, and the tops of the two inclined surfaces intersect to form the top of the spacer mechanism 6. The first discharge port 4 and the second discharge port 5 are separated by the spacer mechanism 6, and the spacer mechanism 6 is constructed by the inclined side walls of the first discharge port 4 and the second discharge port 5 to form the top tip structure of the spacer mechanism 6. There is a gap between the valve plate 2 and the top tip mechanism of the spacer mechanism 6, which enhances the passability of the block sulfur material and effectively reduces the risk of blockage.

[0041] Specifically, the feed port 3 is connected to a guide section 9, which is connected to the inner wall of the valve body 1. The diameter of the inlet 7 is larger than that of the guide section 9, ensuring that the material introduced by the feed port 3 can smoothly enter the inlet 7 and then fall into the subsequent first outlet 4 and second outlet 5, thereby improving the circulation reliability of the material.

[0042] In this specific embodiment, the valve plate 2 is a closed structure, and the cross-sectional area of ​​the inlet 7 is larger than the cross-sectional area of ​​the outlet 8, which is beneficial to control the landing point of the valve plate 2 to ensure that the material landing position is all located in the first outlet 4 or the second outlet 5.

[0043] Specifically, a baffle 10 is provided on the inner side wall of the outlet 8, and the baffle 10 is arranged at an angle to enhance the closing degree of the valve plate 2. During the production process, in order to save production costs, the valve plate 2 in the prior art can be modified, and the baffle 10 is provided on the inner side wall of the valve plate 2, and the baffle 10 is arranged at an angle to reduce the diameter of the outlet 8 and close the valve plate 2.

[0044] In order to ensure that the valve plate 2 is in the correct position when it is connected to the first discharge port 4 and the second discharge port 5, there are two groups of baffles 10, which are symmetrically arranged with the center line of the spacing mechanism 6 as the axis of symmetry, thereby improving the working reliability of the valve plate 2.

[0045] In practical applications, the baffle 10 and the valve plate 2 can be connected by welding, which has high connection strength and can ensure the structural integrity of the valve plate 2.

[0046] In order to control the flipping of the valve plate 2, the valve plate 2 is connected to a connecting rod mechanism 11, which can drive the valve plate 2 to rotate relative to the valve body 1. The connecting rod mechanism 11 can be connected to a driver to improve the automation and controllability of the three-way dispensing valve.

[0047] Embodiment 2

[0048] This embodiment provides a feeding system, including the three-way feeding valve in the first embodiment, please refer to Figure 4 .

[0049] The feeding system of this embodiment includes a first three-way dispensing valve 12, a second three-way dispensing valve 13, a third three-way dispensing valve 14 and a fourth three-way dispensing valve 15, wherein:

[0050] The feed port 3 of the first three-way material distribution valve 12 is connected to the material source;

[0051] The first discharge port 4 of the first three-way dividing valve 12 is connected to the first feed port 3 of the second three-way dividing valve 13 by a conveyor belt 16, the first discharge port 4 of the second three-way dividing valve 13 is connected to the third three-way dividing valve 14, the second discharge port 5 of the second three-way dividing valve 13 is connected to the fourth three-way dividing valve 15, the third three-way dividing valve 14 and the fourth three-way dividing valve 15 are respectively connected to the sulfur melting tank 19 by a discharge chute 17, and an agitator is arranged in the sulfur melting tank 19.

[0052] This embodiment adopts four groups of three-way dividing valves to transport materials. The three-way dividing valves are used to enhance the passability of lump sulfur and effectively avoid blockage. By setting the landing point position of the three-way dividing valve, all materials can fall into the target discharge port, further avoiding blockage caused by lump sulfur and improving the material transportation reliability of the system.

[0053] It should also be emphasized that, in this embodiment, the unloading chute 17 is connected to the sulfur melting tank 19 by means of a quantitative feeder 18. In the prior art, due to the large height difference of the chute, which is as high as 9.5 meters, when solid sulfur slides from a high place through the chute into the sulfur melting tank, it is easy to cause splashing of liquid sulfur in the sulfur melting tank due to the large potential energy, especially when the three-way valve is blocked due to the use of lump sulfur powder, at the moment of clearing the blockage, a large amount of accumulated sulfur quickly falls into the sulfur melting tank due to no buffering, which is particularly easy to cause the sulfur melting tank overflow accident. After the material is divided, the feeding system in the prior art has no online material quantity detection and monitoring, and can only manually observe the material discharge amount through the observation hole of the sulfur melting tank. Therefore, the volatility of the material discharge amount and the difficulty of operation are aggravated. At the same time, if the observation hole is always open, there is a safety risk of people falling into the tank and environmental pollution caused by the overflow of molten sulfur smoke. There is no buffer or isolation between the material discharge chute and the sulfur melting tank, which is easy to produce a chimney effect, and the sulfur-containing flue gas in the sulfur melting tank is sucked into the three-way material distribution valve, resulting in a poor environment at the three-way valve. In this embodiment, the material discharge chute 17 is connected to the sulfur melting tank 19 by a quantitative feeder 18, and a buffer and isolation are formed between the material discharge chute 17 and the sulfur melting tank 19 to avoid the chimney effect. The quantitative feeder 18 has a weighing function to realize online material detection and monitoring, avoid manual observation of the material discharge amount, improve the material discharge accuracy, and greatly reduce the operating burden.

[0054] The three-way material distribution valve and feeding system of the utility model improves the valve plate 2 of the three-way material distribution valve, making it suitable for the distribution of block and mixed materials, greatly reducing the frequency of blockage of the material distribution and feeding system, and expanding the application range of the three-way material distribution valve; the material discharge chute 17 and the quantitative feeder 18 cooperate to feed, replacing the material discharge method of the material discharge chute directly into the sulfur melting tank in the prior art, blocking the suction effect of the chimney of the material discharge chute, and having a quantitative speed regulation feeding function, and cooperating with the volume of the material discharge chute 17 and the three-way material distribution valve, it has the buffering, adjustment and monitoring functions of the material surge at the moment of clearing after the material is blocked. Under the premise that the system does not need to be greatly improved, the utility model solves the problem that the sulfur distribution and feeding system is blocked due to the fluctuation of the quality of solid sulfur in the sulfur melting process, thereby causing a large fluctuation in the sulfur melting production load, a decrease in production capacity, and the sulfur melting tank is easy to overflow, and there are great safety and environmental risks. It greatly improves the stability of sulfur melting production, reduces the safety risk of sulfur melting production, and improves the sulfur melting site environment.

[0055] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A three-way material dispensing valve, characterized in that: include: A valve body, wherein the valve body has a feed port, a first discharge port, and a second discharge port, wherein the feed port is located at the top of the valve body, the first discharge port and the second discharge port are both located at the bottom of the valve body, and the first discharge port and the second discharge port are separated by a spacing mechanism; A valve plate, the valve plate is arranged in the inner cavity of the valve body and the two are hingedly connected, the valve plate has an inlet and an outlet, the inlet is connected to the feed inlet, and the inlet is also connected to the outlet; there is a gap between the outlet and the top of the spacing mechanism, the valve plate rotates relative to the valve body, so that the outlet can be connected to the first outlet and the second outlet; Taking the plane parallel to the feed port as the projection plane, when the guide outlet is only connected with the first discharge port, the projection of the guide outlet on the projection plane is located on the side of the top of the spacing mechanism close to the first discharge port; when the guide outlet is only connected with the second discharge port, the projection of the guide outlet on the projection plane is located on the side of the top of the spacing mechanism close to the second discharge port; when both the first discharge port and the second discharge port are connected with the guide outlet, the projection of the guide outlet on the projection plane is located above the top of the spacing mechanism.

2. The three-way dispensing valve according to claim 1, characterized in that: The valve body is an inverted Y-shaped structure, and the spacing mechanism has an inclined surface that gradually inclines from top to bottom toward the first discharge port and the second discharge port, and the tops of the two inclined surfaces intersect to form the top of the spacing mechanism.

3. The three-way dispensing valve according to claim 1, characterized in that: The feed port is connected with a guide section, the guide section is connected to the inner wall of the valve body, and the diameter of the introduction port is larger than the diameter of the guide section.

4. The three-way dispensing valve according to claim 1, characterized in that: The valve plate is a closed structure, and the cross-sectional area of ​​the inlet is larger than the cross-sectional area of ​​the outlet.

5. The three-way dispensing valve according to claim 4, characterized in that: A baffle is arranged on the inner side wall of the guide outlet, and the baffle is arranged obliquely to enhance the closing degree of the valve plate.

6. The three-way dispensing valve according to claim 5, characterized in that: The number of the baffles is two groups, and the two baffles are symmetrically arranged with the midline of the spacing mechanism as the symmetry axis; The baffle is connected to the valve plate by welding.

7. The three-way dispensing valve according to claim 1, characterized in that: The valve plate is connected to a connecting rod mechanism, and the connecting rod mechanism can drive the valve plate to rotate relative to the valve body.

8. A feeding system, characterized in that: The invention comprises the three-way dispensing valve as described in any one of claims 1 to 7.

9. The feeding system according to claim 8, characterized in that: include: A first three-way material dispensing valve, wherein the feed port of the first three-way material dispensing valve is connected to a material source; A second three-way dividing valve, wherein the first discharge port of the first three-way dividing valve is connected with the first feed port of the second three-way dividing valve by a conveyor belt, the first discharge port of the second three-way dividing valve is connected with a third three-way dividing valve, the second discharge port of the second three-way dividing valve is connected with a fourth three-way dividing valve, the third three-way dividing valve and the fourth three-way dividing valve are respectively connected with a sulfur melting tank by a discharge chute, and an agitator is arranged in the sulfur melting tank.

10. The feeding system according to claim 9, characterized in that: The material discharge chute is connected to the sulfur melting tank by a quantitative feeder.

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