Sulfur feeding mechanism for sodium pyrosulfite

Abstract

The utility model relates to the technical field of sodium metabisulfite processing, in particular to a sodium metabisulfite sulfur feeding mechanism which comprises a barrel, a top cover is arranged at the top of the barrel, a sulfur feeding pipe is rotatably mounted in the center of the top cover, a plurality of sulfur discharging holes are formed in the lower portion of the outer side wall of the sulfur feeding pipe, and the sulfur discharging holes are communicated with the top cover. The top of the sulfur inlet pipe is connected with a gas conveying pipe through a rotary joint, the outer side wall of the sulfur inlet pipe is communicated with a plurality of stirring pipes, and a plurality of auxiliary holes are formed in the stirring pipes. According to the utility model, the sulfur inlet pipe is rotatably mounted on the top cover, when the sulfur inlet pipe needs to be cleaned, the rotary joint box gas conveying pipe is firstly disassembled, then the two lifting lugs are hooked by using a crane, and then a worker presses the fixing rod to enable the fixing rod to leave the through hole and enter the connecting hole, so that the fixation of the upper plate and the lower plate can be cancelled, and the separation of the top cover and the cylinder body is realized; the top cover can be lifted upwards by a crane, the sulfur inlet pipe is taken out from the cylinder, and a worker can conveniently clean the sulfur inlet pipe and the cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium metabisulfite processing, and specifically relates to a sulfur inlet mechanism for sodium metabisulfite. Background Technique

[0002] The preparation steps of sodium metabisulfite mainly include the following processes:

[0003] 1. Raw material preparation: The main raw materials of sodium metabisulfite are sulfuric acid and sodium sulfite. Sulfuric acid is generally obtained by oxidizing sulfur dioxide, while sodium sulfite can be obtained by reacting sulfur dioxide with an alkali solution;

[0004] 2. Oxidation to produce sulfur dioxide: Sulfuric acid is decomposed by heating to produce sulfur dioxide gas, which is cooled, purified, and concentrated to obtain saturated sulfur dioxide gas;

[0005] 3. Generation of cuprous sulfate: The generated sulfur dioxide gas is introduced into a sodium sulfite solution with a certain concentration, and sulfur dioxide reacts with sodium sulfite to generate cuprous sulfate. This reaction is accompanied by a small amount of sodium sulfite being oxidized to sodium sulfate;

[0006] 4. Generation of sodium metabisulfite: The cuprous sulfate generated by the reaction is separated from the reaction solution in the form of a precipitate. The separated cuprous precipitate is filtered and washed to remove impurities. Then the washed cuprous precipitate is dissolved in an appropriate amount of water, and an appropriate amount of sodium hydroxide is added for reaction to generate sodium metabisulfite. At this time, the reaction solution is alkaline;

[0007] 5. Crystallization and drying: The generated sodium metabisulfite solution is concentrated, filtered, and then heated to a certain temperature to reduce its solubility, resulting in the crystallization of sodium metabisulfite in the solution. Subsequently, these crystals are separated by a centrifuge and then dried by wind or hot air to finally obtain a pure sodium metabisulfite product.

[0008] When generating cuprous sulfate, a sulfur inlet mechanism is required to introduce sulfur dioxide gas into a cylinder filled with sodium sulfite solution for reaction. The existing sulfur inlet pipe has several pores on its surface and is then fixedly installed inside the cylinder and integrated with the cylinder, making it non - detachable. Therefore, it is inconvenient to clean the sulfur inlet pipe.

[0009] Therefore, the utility model designs a sulfur inlet mechanism for sodium metabisulfite to solve the problems existing in the prior art. Content of the Utility Model

[0010] The purpose of the utility model is to provide a sulfur inlet mechanism for sodium metabisulfite to solve the problems raised in the above - mentioned background technique.

[0011] To achieve the above object, the present utility model provides the following technical solutions: A sulfur inlet mechanism for sodium metabisulfite, comprising: a cylinder body, a top cover is provided at the top of the cylinder body, a sulfur inlet pipe is rotatably installed at the center of the top cover, a plurality of sulfur outlet holes are opened below the outer side wall of the sulfur inlet pipe, the top of the sulfur inlet pipe is connected to a gas transmission pipe through a rotary joint, a plurality of stirring pipes are communicated with the outer side wall of the sulfur inlet pipe, a plurality of secondary holes are opened on the stirring pipes, a driving assembly for rotating the sulfur inlet pipe is provided at the top of the sulfur inlet pipe, upper plates are installed on both sides of the top cover, and lower plates are installed above the outer side walls on both sides of the cylinder body, and a fixing assembly is provided between the upper plate and the lower plate.

[0012] Preferably, the driving assembly includes a bracket, the bracket is installed at one end of the top of the top cover, a driving motor is installed on the bracket, the output end of the driving motor is connected to a driving gear, and a driven gear meshing with the driving gear is installed above the outer side wall of the sulfur inlet pipe. The driving motor drives the driving gear to rotate, and the rotation of the driven gear can rotate the sulfur inlet pipe, so that the stirring pipe rotates, stirring the sulfur dioxide gas and sodium sulfite solution, and improving the reaction effect.

[0013] Preferably, the fixing assembly includes a plug block, the plug block is installed at the bottom of the upper plate, a through hole is opened at one end of the plug block, a fixing rod is slidably installed in the through hole, one end of the fixing rod and the upper plate are connected by a spring, a slot for inserting the plug block is opened at the top of the lower plate, a connection hole communicating with the slot is opened at one end of the lower plate, and the connection hole is slidably connected with the fixing rod. Press the fixing rod to make the fixing rod enter the through hole and compress the spring, and then the plug hole can be inserted into the slot to realize the installation of the upper plate and the lower plate. After the installation is completed, the fixing rod pops out and inserts into the connection hole through the restoring force of the spring to realize the fixing of the upper plate and the lower plate, so that the top cover can be stably installed on the top of the cylinder body.

[0014] Preferably, a limiting ring is installed at the bottom of the top cover, and a limiting groove for inserting the limiting ring is opened at the top of the cylinder body. Inserting the limiting ring into the limiting groove can improve the sealing performance between the cylinder body and the top cover.

[0015] Preferably, lifting lugs are installed on both sides of the top of the top cover. The hook of the crane hooks the lifting lugs, and the top cover can be lifted upward.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, the sulfur inlet pipe is rotatably installed on the top cover. When the sulfur inlet pipe needs to be cleaned, first remove the rotary joint and the gas transmission pipe, then use a crane to hook the two lifting lugs, and then the staff presses the fixing rod to make the fixing rod leave the through hole and enter the connection hole, so that the fixing of the upper plate and the lower plate can be cancelled, realizing the separation of the top cover and the cylinder body. The crane can lift the top cover upward, and take out the sulfur inlet pipe from the cylinder body, which is convenient for the staff to clean the sulfur inlet pipe and also convenient for cleaning the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view schematic diagram of the present utility model;

[0019] Figure 2 is the schematic diagram of the top cover structure of the present utility model;

[0020] Figure 3 is the schematic diagram of the cylinder body structure of the present utility model;

[0021] Figure 4 is the schematic diagram of the fixing component structure of the present utility model.

[0022] In the figure: 1, cylinder body; 2, top cover; 3, sulfur inlet pipe; 4, sulfur outlet hole; 5, rotary joint; 6, gas transmission pipe; 7, stirring pipe; 8, auxiliary hole; 9, drive assembly; 10, upper plate; 11, lower plate; 12, fixing component; 901, support; 902, drive motor; 903, driving gear; 904, driven gear; 121, insertion block; 122, through hole; 123, fixing rod; 124, spring; 125, slot; 126, connection hole; 127, limiting ring; 128, limiting groove; 13, lifting lug. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] 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 shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4, an embodiment provided by the utility model: a sulfur inlet mechanism for sodium metabisulfite, comprising: a cylinder body 1, a top cover 2 is arranged at the top of the cylinder body 1, a sulfur inlet pipe 3 is rotatably installed at the center of the top cover 2, a plurality of sulfur outlet holes 4 are opened at the lower part of the outer side wall of the sulfur inlet pipe 3, the top of the sulfur inlet pipe 3 is connected to a gas transmission pipe 6 through a rotary joint 5, a plurality of stirring pipes 7 are communicated with the outer side wall of the sulfur inlet pipe 3, a plurality of auxiliary holes 8 are opened on the stirring pipes 7, a driving assembly 9 for rotating the sulfur inlet pipe 3 is arranged at the top of the sulfur inlet pipe 3, upper plates 10 are installed on both sides of the top cover 2, lower plates 11 are installed on the upper parts of the outer side walls on both sides of the cylinder body 1, and a fixing assembly 12 is arranged between the upper plates 10 and the lower plates 11.

[0025] Please refer to Figure 2 , in this embodiment: the driving assembly 9 includes a bracket 901, the bracket 901 is installed at one end of the top of the top cover 2, a driving motor 902 is installed on the bracket 901, the output end of the driving motor 902 is connected to a driving gear 903, and a driven gear 904 meshing with the driving gear 903 is installed on the upper part of the outer side wall of the sulfur inlet pipe 3.

[0026] Please refer to Figure 4 , in this embodiment: the fixing assembly 12 includes a plug 121, the plug 121 is installed at the bottom of the upper plate 10, a through hole 122 is opened at one end of the plug 121, a fixing rod 123 is slidably installed in the through hole 122, one end of the fixing rod 123 and the upper plate 10 are connected through a spring 124, a slot 125 inserted with the plug 121 is opened at the top of the lower plate 11, a connection hole 126 communicated with the slot 125 is opened at one end of the lower plate 11, and the connection hole 126 is slidably connected with the fixing rod 123.

[0027] Please refer to Figures 2-3 , in this embodiment: a limiting ring 127 is installed at the bottom of the top cover 2, and a limiting groove 128 inserted with the limiting ring 127 is opened at the top of the cylinder body 1.

[0028] Please refer to Figure 2 , in this embodiment: lifting lugs 13 are installed on both sides of the top of the top cover 2.

[0029] Working principle: The sulfur dioxide gas in the gas transmission pipe 6 enters the sulfur inlet pipe 3 through the rotary joint 5, and is discharged into the cylinder body 1 through the sulfur outlet holes 4 and the auxiliary holes 8, and reacts with the sodium sulfite solution in the cylinder body 1. The support 901 drives the driving motor 902 to rotate, and the stirring pipe 7 rotates through the meshing of the driving gear 903 and the driven gear 904, so as to stir the sodium sulfite solution in the cylinder body 1 and improve the reaction effect with the sulfur dioxide gas. After the reaction is completed, it is discharged through the discharge pipe at the bottom of the cylinder body 1 for the next process. When it is necessary to clean the inner wall of the cylinder body 1 and the sulfur inlet pipe 3, the crane can be used to hook the lifting lug 13, and then press the fixing rod 123, so that the fixing rod 123 leaves the connection hole 126 and enters the through hole 122 and squeezes the spring 124. The crane can then lift the top cover 2, separating the sulfur inlet pipe 3 from the cylinder body 1. After separation, it is convenient for the staff to clean the inner wall of the cylinder body 1 and the sulfur inlet pipe 3 respectively. After cleaning, the top cover 2 is lifted above the cylinder body 1 again. Similarly, press the fixing rod 123 so that the fixing rod 123 enters the through hole 122. Then the crane slowly lowers the top cover 2. After the insertion block 121 completely enters the slot 125, through the restoring force of the spring 124, the fixing rod 123 pops out and enters the connection hole 126, so as to limit the upper plate 10 and the lower plate 11, and complete the installation. The content not described in detail in the description belongs to the prior art well-known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sodium metabisulfite sulfur feeding mechanism, comprising: A cylinder (1), characterized in that: a top cover (2) is provided on the top of the cylinder (1), a sulfur inlet pipe (3) is rotatably mounted at the center of the top cover (2), a plurality of sulfur outlet holes (4) are provided below the outer wall of the sulfur inlet pipe (3), the top of the sulfur inlet pipe (3) is connected to a gas pipeline (6) through a rotary joint (5), a plurality of stirring pipes (7) are connected to the outer wall of the sulfur inlet pipe (3), a plurality of auxiliary holes (8) are provided on the stirring pipe (7), a driving component (9) for rotating the sulfur inlet pipe (3) is provided on the top of the sulfur inlet pipe (3), upper plates (10) are installed on both sides of the top cover (2), lower plates (11) are installed above the outer walls of both sides of the cylinder (1), and a fixing component (12) is provided between the upper plate (10) and the lower plate (11).

2. A sodium metabisulfite sulfur feeding mechanism according to claim 1, characterized in that: The driving assembly (9) comprises a bracket (901), the bracket (901) being mounted on one end of the top of the top cover (2), a driving motor (902) being mounted on the bracket (901), an output end of the driving motor (902) being connected to a driving gear (903), and a driven gear (904) meshing with the driving gear (903) being mounted above the outer side wall of the sulfur inlet pipe (3).

3. A sodium metabisulfite sulfur feeding mechanism according to claim 1, characterized in that: The fixing assembly (12) comprises an insert block (121), wherein the insert block (121) is mounted at the bottom of the upper plate (10), a through hole (122) is provided at one end of the insert block (121), a fixing rod (123) is slidably installed in the through hole (122), one end of the fixing rod (123) is connected to the upper plate (10) via a spring (124), a slot (125) is provided at the top of the lower plate (11) for plugging into the insert block (121), and a connecting hole (126) is provided at one end of the lower plate (11) for communicating with the slot (125), and the connecting hole (126) is slidably connected to the fixing rod (123).

4. A sodium metabisulfite sulfur feeding mechanism according to claim 1, characterized in that: A limiting ring (127) is installed at the bottom of the top cover (2), and a limiting groove (128) which is plugged into the limiting ring (127) is provided at the top of the cylinder (1).

5. A sodium metabisulfite sulfur feeding mechanism according to claim 1, characterized in that: Lifting ears (13) are installed on both sides of the top of the top cover (2).

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