A high-efficiency production device for zinc pyrithione

Abstract

This utility model discloses a high-efficiency production device for zinc pyridinethione, belonging to the field of zinc pyridinethione production technology. It includes a purification kettle, a first purification chamber located on the upper part of one side of the purification kettle, with a feed inlet on the first purification chamber. An overflow port is provided between the top of one side wall of the first purification chamber and the top of the purification kettle. A baffle plate is vertically installed inside the first purification chamber, with a flow channel between the bottom of the baffle plate and the bottom of the first purification chamber. A liquid outlet assembly is located at the bottom of the first purification chamber. A filter screen is detachably installed below the first purification chamber, with the filter screen horizontally positioned. A stirring assembly is installed inside the first purification chamber, capable of moving the filter screen vertically. The purification kettle is connected to a reaction kettle, which is connected to a sodium pyridinethione raw material kettle. In this utility model, the baffle plate prevents the solution from leaving directly from the overflow port, improving the effect of the primary displacement reaction. Zinc sulfate undergoes two displacements in the purification kettle, improving raw material purity, reducing floor space, and increasing the production efficiency of zinc pyridinethione.

Description

Technical Field

[0001] This utility model relates to the field of zinc pyridinethione production technology, specifically to a high-efficiency zinc pyridinethione production device. Background Technology

[0002] Zinc pyrithione (ZPT) is a high-grade bioactive regulator with excellent anti-phospholipid and anti-seborrheic properties. As a broad-spectrum, low-toxicity, and environmentally friendly inhibitor of fungi and bacteria, it can be widely used in various work and life applications. The whiteness of zinc pyrithione is an important indicator of a product; for example, its use in shampoos directly affects the shampoo's appearance. The main factors determining the appearance of zinc pyrithione are the control of the synthesis process and the influence of impurities. Most existing technologies use sodium pyrithione and zinc sulfate to complex at room temperature. Zinc sulfate contains heavy metal ions such as iron, nickel, copper, and chromium ions, which can complex with sodium pyrithione to form colored complexes, thus affecting the whiteness of zinc pyrithione.

[0003] In existing technologies, zinc powder is typically used to remove impurities from zinc sulfate. Since different impurities react with zinc powder at different times, existing equipment usually involves multiple displacement tanks to purify zinc sulfate in order to ensure that the impurities react fully. This results in multiple pieces of equipment occupying a large area and having high production costs.

[0004] In view of the problems existing in the prior art, this utility model combines years of design and use experience in related fields to design and manufacture a high-efficiency production device for zinc pyridinethione to overcome the above defects. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a high-efficiency production device for zinc pyrithione, which uses a purification kettle to purify zinc sulfate, allowing metal ions with different reactivity to react with zinc powder, thereby improving the purity of the raw materials while reducing the equipment footprint and efficiently producing zinc pyrithione.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high-efficiency production device for zinc pyridinethione includes a purification kettle, a first purification chamber is provided on the upper part of one side of the purification kettle, a zinc powder feeding port is provided at the top of the other side of the purification kettle, a feed inlet is provided on the first purification chamber, an overflow port is provided between the top of one side wall of the first purification chamber and the top of the purification kettle, a baffle plate is vertically provided in the first purification chamber, a flow channel is provided between the bottom end of the baffle plate and the bottom of the first purification chamber, a liquid outlet assembly is provided at the bottom of the first purification chamber, a filter screen is detachably provided below the first purification chamber, the filter screen is horizontally arranged, and a stirring assembly is provided in the first purification chamber, the stirring assembly can drive the filter screen to move in the vertical direction;

[0007] The purification vessel is connected to a reaction vessel, and the reaction vessel is connected to a sodium pyridinethione raw material vessel.

[0008] Preferably, the stirring assembly includes a first motor located on the outer side wall of the purification vessel. The output end of the first motor is connected to a drive shaft, which is horizontally positioned. The end of the drive shaft away from the first motor passes through the side wall of the purification vessel and the flow channel and extends into the first purification chamber. The drive shaft is provided with a plurality of stirring rods, which are located on both sides of the baffle plate.

[0009] Preferably, a driven shaft is provided below the filter screen. One end of the driven shaft extends through the side wall of the purification vessel and is connected to the drive shaft via a synchronous pulley and a synchronous belt. Two cams are provided on the driven shaft, and the rotation of the cams drives the filter screen to move up and down.

[0010] Preferably, the liquid outlet assembly includes a liquid outlet, a liquid outlet pipe is provided on the liquid outlet, and a liquid outlet valve is provided on the liquid outlet pipe.

[0011] Preferably, the purification vessel is equipped with a reflux pipe that connects the top and bottom of the filter screen, and the reflux pipe is equipped with a reflux pump and a reflux valve.

[0012] Preferably, the purification vessel has a slag discharge port on its side wall, and a slag discharge door is detachably covered on the slag discharge port, with the slag discharge door facing the filter screen.

[0013] Preferably, longitudinal sliding strips are provided on both ends of the filter screen along the extension direction of the driven shaft, and longitudinal sliding grooves matching the longitudinal sliding strips are provided on the inner side of the slag discharge door and one side wall of the purification kettle.

[0014] Preferably, a second motor is provided at the top of the reactor, and the output end of the second motor is connected to a rotating shaft. The rotating shaft is vertically arranged, and the lower end of the rotating shaft passes through the top of the reactor and extends into the bottom of the reactor. The rotating shaft is provided with helical blades.

[0015] Preferably, the rotating shaft is provided with a scraper, and the outer side of the scraper contacts the side wall of the reactor and the bottom wall of the reactor.

[0016] Preferably, the outer wall of the reactor is provided with a heating jacket, and the bottom of the reactor is provided with a discharge port.

[0017] The advantages of this utility model are:

[0018] 1. This utility model uses a purification kettle to purify zinc sulfate raw materials. Impurities in the zinc sulfate undergo a first-stage displacement reaction with zinc powder in the first purification chamber. Then, the impurities enter the lower part of the first purification chamber through the overflow port and undergo a second displacement reaction with zinc powder on the filter screen. The purification of zinc sulfate is completed in one device, improving the purification efficiency of zinc sulfate, reducing the footprint of the device, and thus improving the whiteness and production efficiency of zinc pyrithione. When the cam moves the filter screen up and down, it stirs the solution and promotes the secondary displacement reaction. A flow channel is provided between the baffle plate and the first purification chamber to prevent the newly added solution from leaving directly through the overflow port without fully reacting with the zinc powder.

[0019] 2. This utility model has a reflux pipe connecting the top and bottom of the filter screen to accelerate the flow of solution at different positions in the purification vessel and promote the occurrence of secondary displacement reaction.

[0020] 3. This invention features a spiral blade on the rotating shaft of the reactor. The spiral blade can transport the sodium pyrithione from below to the top, accelerating the mixing of the reaction raw materials and ensuring a uniform reaction. A scraper is also provided on the rotating shaft. When the scraper rotates, it can scrape off the solid zinc pyrithione from the side wall, discharging as much product as possible and reducing material residue. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a high-efficiency production device for zinc pyridinethione.

[0022] Figure 2 This is a schematic diagram of a purification vessel in a high-efficiency pyridinethione zinc production device.

[0023] Figure 3 This is a schematic diagram of a reaction vessel in a high-efficiency pyridinethione zinc production device.

[0024] In the diagram: 1-Purification vessel, 2-Sodium pyridinethione raw material vessel, 3-Reaction vessel, 4-First purification chamber, 5-Inlet, 6-Overflow port, 7-Baffle plate, 8-Flow channel, 9-Outlet pipe, 10-Outlet valve, 11-Filter screen, 12-First motor, 13-Drive shaft, 14-Stirring rod, 15-Driven shaft, 16-Synchronous pulley, 17-Synchronous belt, 18-Cam, 19-Recirculation pipe, 20-Recirculation pump, 21-Recirculation valve, 22-Slag discharge door, 23-Longitudinal slide bar, 24-Longitudinal chute, 25-First pipe, 26-Second pipe, 27-First valve, 28-Second motor, 29-Rotating shaft, 30-Spiral blade, 31-Scraper, 32-Outlet, 33-Heating jacket, 34-Zinc powder feed port, 35-Second valve. Detailed Implementation

[0025] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1-3 As shown, a high-efficiency pyridinethione zinc production device includes a purification kettle 1. A first purification chamber 4 is located on the upper part of one side of the purification kettle 1, and a zinc powder feeding port 34 is located at the top of the other side of the purification kettle 1. The first purification chamber 4 has a feed inlet 5, through which zinc sulfate solution and zinc powder from the first purification chamber 4 are added. An overflow port 6 is provided between the top of one side wall of the first purification chamber 4 and the top of the purification kettle 1. A baffle plate 7 is vertically installed inside the first purification chamber 4, and a flow channel 8 is provided between the bottom of the baffle plate 7 and the bottom of the first purification chamber 4. A liquid outlet assembly is located at the bottom of the first purification chamber 4, including a liquid outlet, a liquid outlet pipe 9, and a liquid outlet valve 10. A detachable filter screen 11 is installed below the first purification chamber 4. The filter screen 11 is horizontally positioned, and zinc powder is placed onto the filter screen 11 through the zinc powder feeding port 34.

[0027] In this invention, metal ion impurities in the zinc sulfate solution first undergo a displacement reaction with zinc powder in the first purification chamber 4. As the solution volume increases in the first purification chamber 4, the solution that has undergone the displacement reaction leaves from the overflow port 6 and undergoes a secondary displacement reaction when passing through the filter screen 11. This allows impurities with different reaction times to come into contact with and react with the zinc powder, improving the purification efficiency of zinc sulfate and reducing the equipment footprint. The filter screen 11 also separates the displaced solid impurities from the solution. The baffle plate 7 prevents the added solution from leaving directly from the overflow port 6, which would affect the effect of the primary displacement reaction. The remaining solution in the first purification chamber 4 is discharged through the outlet pipe 9.

[0028] like Figure 2 As shown, a stirring assembly is installed in the first purification chamber 4, which can drive the filter screen 11 to move vertically. The stirring assembly ensures that the zinc powder and zinc sulfate solution are in full contact for the first displacement, while simultaneously moving the filter screen 11 up and down, ensuring that the zinc powder on the filter screen 11 is in full contact with the solution undergoing the second displacement, thus ensuring the purification effect of the second displacement reaction. Specifically, the stirring assembly includes a first motor 12, which is located on the outer side wall of the purification vessel 1. The output end of the first motor 12 is connected to a drive shaft 13, which is horizontally positioned. The end of the drive shaft 13 away from the first motor 12 passes through the side wall of the purification vessel 1, the flow channel 8, and extends into the first purification chamber 4. Several stirring rods 14 are installed on the drive shaft 13, located on both sides of the baffle plate 7, and the stirring rods 14 do not interfere with the baffle plate 7. A driven shaft 15 is installed below the filter screen 11, with one end of the driven shaft 15 extending out of the side wall of the purification vessel 1 and connected to the drive shaft 13 via a synchronous pulley 16 and a synchronous belt 17. Two cams 18 are provided on the driven shaft 15. The cams 18 are located inside the purification kettle 1. The rotation of the cams 18 drives the filter screen 11 to move up and down, which promotes the mixing of zinc powder on the filter screen 11 with the solution and avoids solid blockage of the filter screen 11.

[0029] The purification vessel 1 has a slag discharge port on its side wall, and a slag discharge door 22 is detachably covered on the slag discharge port. The slag discharge door 22 is positioned directly opposite the filter screen 11. By removing the slag discharge door 22, the filter screen 11 can be taken out to clean solid impurities. Along the extension direction of the driven shaft 15, longitudinal sliding strips 23 are provided on both ends of the filter screen 11. The inner side of the slag discharge door 22 and one side wall of the purification vessel 1 are provided with longitudinal sliding grooves 24 that match the longitudinal sliding strips 23. The longitudinal sliding grooves 24 guide the movement of the filter screen 11.

[0030] The purification vessel 1 is equipped with a reflux pipe 19, which connects the top and bottom of the filter screen 11. The reflux pipe 19 is equipped with a reflux pump 20 and a reflux valve 21. The reflux pipe 19 pumps the liquid below the filter screen 11 into the liquid above the filter screen 11, improving the uniformity of contact between the zinc sulfate solution and the zinc powder.

[0031] A purification vessel 1 is connected to a reaction vessel 3 at its bottom. The purification vessel 1 and the reaction vessel 3 are connected by a first pipe 25, which is equipped with a first valve 27. The reaction vessel 3 is connected to a sodium pyridinethione raw material vessel 2 via a second pipe 26, which is equipped with a second valve 35. The reaction vessel 3 has a zinc sulfate inlet and a sodium pyridinethione inlet. The purified zinc sulfate solution and sodium pyridinethione react in the reaction vessel 3 to form zinc pyridinethione.

[0032] refer to Figure 3 Specifically, a second motor 28 is installed at the top of the reactor 3, and the output end of the second motor 28 is connected to a rotating shaft 29. The rotating shaft 29 is vertically arranged, with its lower end passing through the top and bottom of the reactor 3. A spiral blade 30 is installed on the rotating shaft 29. The spiral blade 30 transports the liquid from the bottom of the reactor 3 to the upper part, promoting mixing of the reactants and improving the reaction efficiency. A scraper 31 is installed on the rotating shaft 29, with its outer side contacting the side and bottom walls of the reactor 3. The scraper 31 scrapes off the product, zinc pyridinethione, preventing product residue on the side walls of the reactor 3 after production. A heating jacket 33 is installed on the outer wall of the reactor 3, and a discharge port 32 is installed at the bottom of the reactor 3. The heating jacket 33 heats the reactor 3.

[0033] Detailed operation process

[0034] Zinc powder is added to the first purification chamber 4 and the filter screen 11 through the feed inlet 5 and zinc powder inlet 34, respectively. Zinc sulfate solution is added to the first purification chamber 4 through the feed inlet 5. Then, the first motor 12 is started, which drives the drive shaft 13 to rotate. The drive shaft 13 drives the stirring rod 14 to rotate, and the stirring rod 14 stirs the reaction system. The impurity metal ions in the zinc sulfate solution begin a primary displacement reaction with the zinc powder. As more solution is added, the solution flows out from the overflow port 6 of the first purification chamber 4 and falls onto the filter screen 11, where it undergoes a secondary displacement reaction with the zinc powder. Solid impurities remain on the filter screen 11.

[0035] The drive shaft 13 also drives the synchronous pulley 16 on it to rotate. The synchronous pulley 16 on the drive shaft 13 drives the synchronous pulley 16 on the driven shaft 15 to rotate via the synchronous belt 17, which in turn drives the driven shaft 15 to rotate. The rotation of the driven shaft 15 drives the two cams 18 to rotate, and the cams 18 cause the filter screen 11 to move up and down, so that the solution replaced once can fully contact the zinc powder for reaction. After the reaction has been going on for a period of time, the reflux valve 21 and the reflux pump 20 are activated to pump the solution below the filter screen 11 into the upper part. After all the solution has been added, the outlet valve 10 on the outlet pipe 9 is opened, and the remaining solution in the first purification chamber 4 is released.

[0036] Open the second valve 35 on the second pipeline 26 to add the sodium pyridinethione solution into the reaction vessel 3, and add the heating medium into the heating jacket 33. Start the second motor 28, which drives the rotating shaft 29 to rotate, which in turn drives the spiral blades 30 and the scraper 31 to rotate. Then open the first valve 27 to add the purified zinc sulfate solution from the purification vessel 1 dropwise into the reaction vessel 3, where solid pyridinethione is gradually formed. After the reaction is complete, the material is discharged.

[0037] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A high-efficiency production apparatus for zinc pyrithione, characterized in that, The apparatus includes a purification vessel (1), a first purification chamber (4) on the upper part of one side of the purification vessel (1), a zinc powder feeding port (34) on the top of the other side of the purification vessel (1), a feed inlet (5) on the first purification chamber (4), an overflow port (6) between the top of one side wall of the first purification chamber (4) and the top of the purification vessel (1), a baffle plate (7) is vertically arranged inside the first purification chamber (4), a flow channel (8) is provided at the bottom of the baffle plate (7) and the bottom of the first purification chamber (4), a liquid outlet assembly is provided at the bottom of the first purification chamber (4), a filter screen (11) is detachably arranged below the first purification chamber (4), the filter screen (11) is horizontally arranged, and a stirring assembly is provided inside the first purification chamber (4), the stirring assembly can drive the filter screen (11) to move in the vertical direction; The purification vessel (1) is connected to the reaction vessel (3), and the reaction vessel (3) is connected to the sodium pyridinethione raw material vessel (2).

2. The high-efficiency production apparatus for zinc pyrithione according to claim 1, characterized in that, The stirring assembly includes a first motor (12), which is located on the outer side wall of the purification vessel (1). The output end of the first motor (12) is connected to a drive shaft (13). The drive shaft (13) is horizontally arranged. The end of the drive shaft (13) away from the first motor (12) passes through the side wall of the purification vessel (1), the flow channel (8), and extends into the first purification chamber (4). The drive shaft (13) is provided with a plurality of stirring rods (14), which are located on both sides of the baffle plate (7).

3. The high-efficiency production apparatus for zinc pyrithione according to claim 2, characterized in that, The filter screen (11) is provided with a driven shaft (15) below it. One end of the driven shaft (15) passes through the side wall of the purification vessel (1) and is connected to the drive shaft (13) through a synchronous pulley (16) and a synchronous belt (17). The driven shaft (15) is provided with two cams (18). The cams (18) rotate to drive the filter screen (11) to move up and down.

4. The high-efficiency production apparatus for zinc pyrithione according to claim 1, characterized in that, The liquid outlet assembly includes a liquid outlet, a liquid outlet pipe (9) is provided on the liquid outlet, and a liquid outlet valve (10) is provided on the liquid outlet pipe (9).

5. The high-efficiency production apparatus for zinc pyrithione according to claim 1, characterized in that, The purification vessel (1) is equipped with a reflux pipe (19), which connects the top and bottom of the filter screen (11). The reflux pipe (19) is equipped with a reflux pump (20) and a reflux valve (21).

6. The high-efficiency production apparatus for zinc pyrithione according to claim 3, characterized in that, The purification vessel (1) has a slag discharge port on its side wall, and a slag discharge door (22) is detachably covered on the slag discharge port. The slag discharge door (22) is positioned directly opposite the filter screen (11).

7. The high-efficiency production apparatus for zinc pyrithione according to claim 6, characterized in that, Along the extension direction of the driven shaft (15), both ends of the filter screen (11) are provided with longitudinal slide bars (23), and the inner side of the slag discharge door (22) and one side wall of the purification kettle (1) are provided with longitudinal slide grooves (24) that match the longitudinal slide bars (23).

8. The high-efficiency production apparatus for zinc pyrithione according to claim 1, characterized in that, The reactor (3) is equipped with a second motor (28) at the top. The output end of the second motor (28) is connected to a rotating shaft (29). The rotating shaft (29) is vertically arranged. The lower end of the rotating shaft (29) passes through the top of the reactor (3) and extends into the bottom of the reactor (3). The rotating shaft (29) is equipped with a spiral blade (30).

9. The high-efficiency production apparatus for zinc pyrithione according to claim 8, characterized in that, A scraper (31) is provided on the rotating shaft (29), and the outer side of the scraper (31) contacts the side wall of the reactor (3) and the bottom wall of the reactor (3).

10. The high-efficiency production apparatus for zinc pyrithione according to claim 1, characterized in that, The outer wall of the reactor (3) is provided with a heating jacket (33), and the bottom of the reactor (3) is provided with a discharge port (32).

Images