Online feeding device for super absorbent resin

Abstract

The invention relates to the technical field of water-absorbent resin mixing equipment, and particularly discloses a super absorbent resin online discharging device which comprises a feeding assembly, a material mixing assembly and a discharging funnel, the feeding assembly is provided with a feeding bin used for temporarily storing a first material, and a through hole allowing the first material to leak out is formed in the bottom of the feeding bin; the mixing assembly comprises a mixing bin and a material spray head, the feeding end of the mixing bin and the discharging end of the feeding bin are oppositely arranged, the material spray head is used for spraying out a second material so that the first material and the second material can be mixed to form a third material, and the discharging hopper is arranged at the discharging end of the mixing assembly and used for outputting the third material. The feeding device has the effect of improving the problem of non-uniform mixing during feeding of various super absorbent resins in the prior art.

Description

Technical Field

[0001] This application relates to the technical field of superabsorbent resin mixing equipment, and in particular to a superabsorbent resin online feeding device. Background Technology

[0002] In the production of absorbent cores for hygiene products (such as diapers), it is often necessary to combine various superabsorbent polymer (SAP) particles of different specifications to meet specific absorbency requirements.

[0003] Currently, the conventional production method involves storing different types of resin particles in multiple independent storage tanks, and then feeding them onto the moving nonwoven fabric substrate according to the specified ratio.

[0004] However, in existing water-absorbing resins, different types of resin particles lack effective mixing before falling into the core, and only accumulate at their respective feeding points. This results in uneven resin distribution in the final product, leading to inconsistent water absorption performance in different areas of the core, which affects the overall quality and performance of the product. Summary of the Invention

[0005] To improve the problem of uneven mixing when dispensing various superabsorbent resins, this application provides an online dispensing device for superabsorbent resins.

[0006] The online feeding device for superabsorbent resin provided in this application adopts the following technical solution: A superabsorbent resin in-line feeding device, comprising: The feeding assembly includes a feeding bin for temporarily storing a first material, and the bottom of the feeding bin has a through hole for the first material to leak out. A mixing assembly includes a mixing chamber and a material nozzle. The mixing chamber is located on the side of the feeding assembly near the through hole. The feeding end of the mixing chamber is opposite to the discharging end of the feeding chamber. The material nozzle is located on the side of the mixing chamber near the feeding chamber, and the output end of the material nozzle is located on the side near the mixing chamber. The material nozzle is used to spray a second material so that the first material and the second material mix during the falling process to form a third material. A discharge hopper is located at the discharge end of the mixing assembly and is used to output a third material.

[0007] By adopting the above technical solution, the first material leaks out from the through hole at the bottom of the feed hopper in a free-fall manner. When the first material falls into the mixing hopper, the material nozzle sprays the second material onto the falling path of the first material. Utilizing the diffusion effect of the falling first material and the shear force and kinetic energy brought by the jet flow, the first and second materials undergo convective mixing and diffusion mixing, overcoming the segregation phenomenon caused by differences in particle size and / or density, and improving the problem of uneven mixing when multiple superabsorbent resins are fed. The third material continues to fall and contacts the discharge funnel, which guides and outputs the third material, completing the mixing of the first and second materials. The first material is a single specification of superabsorbent resin or multiple specifications of superabsorbent resin, and the second material is a single specification of superabsorbent resin or multiple specifications of superabsorbent resin.

[0008] Preferably, a plurality of through holes are provided, and the plurality of through holes are distributed circumferentially along the edge of the bottom of the feed hopper, so that the first material forms a continuously falling material curtain around the upper periphery of the mixing hopper.

[0009] By adopting the above technical solution, several through holes distributed circumferentially along the bottom edge of the feeding hopper allow the first material to fall evenly from the periphery, forming a continuous annular material curtain. The material curtain constitutes a three-dimensional mixing space, increasing the contact area between the first material and the second material, improving the uniformity of mixing, and improving the problem of uneven mixing when feeding various superabsorbent resins.

[0010] Preferably, the feeding assembly further includes a vibrator connected to the feeding hopper, the vibrator being used to drive the feeding hopper to vibrate so that the first material flows out from the through hole.

[0011] By adopting the above technical solution, the vibrator causes the feed hopper to vibrate, which can break the bridging phenomenon that may occur in the feed hopper, ensure that the first material flows out continuously from each through hole, and avoid the interruption of material supply caused by poor flow of the first material in the feed hopper.

[0012] Preferably, the mixing chamber is in the shape of a cone, and a pressure relief gap is provided between the mixing chamber and the feeding chamber.

[0013] By adopting the above technical solution, when the third material comes into contact with the side wall of the mixing chamber, the conical cylindrical mixing chamber constrains and guides the third material, causing it to flow towards the discharge funnel; the pressure relief gap allows the mixing chamber to connect with the external environment, thereby ensuring the pressure balance of the mixing chamber.

[0014] Preferably, there are several material nozzles, and the air outlet direction of the several material nozzles is set to cover the falling area of ​​the first material so as to blow the second material into the material curtain of the first material.

[0015] By adopting the above technical solution, several material nozzles simultaneously blow the second material into the material curtain formed by the first material from different directions, thereby penetrating and agitating the material curtain multiple times and in a cross manner, achieving full mixing of the first and second materials.

[0016] Preferably, the material nozzle is a Venturi nozzle.

[0017] By adopting the above technical solution, the Venturi nozzle can expand the coverage of the jet stream and increase the disturbance intensity on the first material, thus mixing the first material and the second material.

[0018] Preferably, the mixing assembly further includes a material bin and a compressed air source. The outlet of the material bin is connected to the suction port of the material nozzle. The material bin is used to temporarily store the second material. The outlet of the compressed air source is connected to the inlet of the material nozzle through a pipe. The compressed air source is used to output airflow to the material nozzle to introduce the second material from the material bin into the material nozzle and to spray the second material from the outlet of the material nozzle.

[0019] By adopting the above technical solution, the material bin is used to temporarily store the second material. The material bin is connected to the material nozzle to form a material supply path. The compressed air source is connected to the material nozzle to provide a power source for conveying the second material, so that a negative pressure is formed at the material nozzle to draw the second material out of the material bin and spray it out.

[0020] Preferably, the discharge port of the discharge funnel is a circular outlet.

[0021] By adopting the above technical solution, the circular outlet structure is smooth and without dead corners, which can effectively prevent the accumulation and blockage of materials at the corners of the outlet, and ensure that the mixed third material is continuously and completely transported to the downstream process. The circular outlet has natural compatibility with most standardized downstream conveying equipment, such as pipe or packaging machine interfaces, thereby avoiding the risk of material flow disturbance, splashing or blockage caused by sudden changes in interface shape or misalignment.

[0022] Preferably, the discharge port of the discharge funnel is a flat outlet.

[0023] By adopting the above technical solution, the flat outlet can form a wide and thin rectangular strip of material curtain when outputting the third material, which increases the unfolding area of ​​the material, thereby enabling direct connection to downstream non-woven fabric processing equipment and improving production efficiency.

[0024] Preferably, the inner wall surfaces of both the mixing chamber and the feeding chamber are treated with antistatic agents and are smooth.

[0025] By adopting the above technical solutions, the inner walls of the mixing bin and the feeding bin are treated with antistatic and smoothing processes, which enables the third material to flow smoothly after falling in and reduces the possibility of the third material stagnation.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The first material is discharged from the through hole at the bottom of the feed hopper in a free-fall manner. When the first material falls into the mixing chamber, the material nozzle sprays the second material onto the falling path of the first material. Utilizing the diffusion effect of the falling first material and the shear force and kinetic energy brought by the jet flow, the first and second materials undergo convective mixing and diffusion mixing, overcoming the segregation phenomenon caused by differences in particle size and / or density, and improving the problem of uneven mixing when multiple superabsorbent resins are fed. The third material continues to fall and contacts the discharge funnel. The discharge funnel guides and outputs the third material, completing the mixing of the first and second materials. The first material is a single specification of superabsorbent resin or multiple specifications of superabsorbent resin, and the second material is a single specification of superabsorbent resin or multiple specifications of superabsorbent resin. 2. Several through holes distributed circumferentially along the bottom edge of the feed hopper allow the first material to fall evenly from the periphery, forming a continuous annular material curtain. The material curtain constitutes a three-dimensional mixing space, increasing the contact area between the first and second materials, improving the uniformity of mixing, and improving the problem of uneven mixing when feeding various superabsorbent resins. 3. The flat outlet can form a wide and thin rectangular strip of material when outputting the third material, which increases the unfolding area of ​​the material, thus enabling direct connection to downstream non-woven fabric processing equipment and improving production efficiency; Attached Figure Description Figure 1 This is a schematic diagram of the superabsorbent resin online feeding device in the embodiments of this application; Figure 2 This is one of the vertical cross-sectional structural diagrams of the superabsorbent resin online feeding device in the embodiments of this application; Figure 3 This is a schematic diagram of the feed hopper structure in an embodiment of this application; Figure 4 This is the second vertical cross-sectional structural diagram of the superabsorbent resin online feeding device in the embodiments of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Feeding assembly; 11. Feeding hopper; 12. Vibrator; 13. Through hole; 2. Mixing assembly; 21. Mixing chamber; 22. Material nozzle; 23. Material hopper; 24. Compressed air source; 3. Discharge funnel. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4This application will be described in further detail.

[0029] This application discloses an online feeding device for superabsorbent resin. (Refer to...) Figure 1 The superabsorbent resin online feeding device includes a feeding component 1, a mixing component 2, and a discharge funnel 3.

[0030] like Figure 2 and Figure 3 As shown, the feeding assembly 1 includes a feeding bin 11 and a vibrator 12. The feeding bin 11 is used to temporarily store the first material. The bottom of the feeding bin 11 has a through hole 13 for the first material to leak out. The vibrator 12 is connected to the feeding bin 11 and is used to drive the feeding bin 11 to vibrate in the horizontal direction so that the first material flows out from the through hole 13. The vibration of the feeding bin 11 by the vibrator 12 can destroy the bridging phenomenon that may occur in the feeding bin 11, ensure that the first material flows out continuously from the through hole 13, avoid the interruption of feeding caused by the poor flow of the first material in the feeding bin 11, and continuously leak out from the through hole 13 at the bottom of the feeding bin 11 by the continuous vibration of the feeding bin 11.

[0031] In this embodiment, a plurality of through holes 13 are provided, and the plurality of through holes 13 are distributed circumferentially along the edge of the bottom of the feeding bin 11, so that the first material forms a continuously falling material curtain at the upper periphery of the mixing bin 21; the plurality of through holes 13 distributed circumferentially along the bottom edge of the feeding bin 11 can allow the first material to fall evenly from the periphery, forming a ring-shaped continuously falling material curtain, the material curtain forming a three-dimensional mixing space, increasing the contact area between the first material and the second material, improving the uniformity of mixing, and improving the problem of uneven mixing when feeding various superabsorbent resins.

[0032] It should be noted that, in this embodiment of the application, since the vibrator 12 drives the feed bin 11 to vibrate continuously in the horizontal direction, that is, the through hole 13 moves in the horizontal direction, the horizontal vibration not only helps to break the arch, but also effectively disperses the possible clumps of the first material through its shearing action, and gives the first material that is leaking down an initial lateral velocity, so that the first material is distributed in a scattering manner on the falling trajectory, which increases the spatial volume and coverage density of the material curtain, thereby increasing its contact surface area with the second material.

[0033] For example, in this embodiment of the application, the feeding bin 11 is set on a bracket with an elastic suspension system or an elastic support system. This application does not limit the structure or device supporting the feeding bin 11. The structure or device supporting the feeding bin 11 only needs to be able to ensure that the vibration generated by the feeding bin 11 under the action of the vibrator 12 is substantially unimpeded. For example, the vibrator 12 includes, but is not limited to, a pneumatic vibrator 12 or an electric vibrator 12.

[0034] like Figure 3 and Figure 4 As shown, the mixing assembly 2 includes a mixing chamber 21, a material nozzle 22, a material chamber 23, and a compressed air source 24. The mixing chamber 21 is located on the side of the feeding assembly 1 near the through hole 13. The feeding end of the mixing chamber 21 is opposite to the discharging end of the feeding chamber 11. The material nozzle 22 is located on the side of the mixing chamber 21 near the feeding chamber 11, and the output end of the material nozzle 22 is located on the side near the mixing chamber 21. The material nozzle 22 is used to spray out a second material so that the first material and the second material mix during the falling process to form a third material. When the first material falls into the mixing chamber 21, the material nozzle 22 sprays the second material onto the falling path of the first material. By utilizing the diffusion effect of the first material falling and the shear force and kinetic energy brought by the jet flow, the first material and the second material are convectively mixed and diffused mixed, overcoming the segregation phenomenon caused by the difference in particle size and / or density, and improving the problem of uneven mixing when feeding various superabsorbent resins.

[0035] In this embodiment, the mixing chamber 21 is in the shape of a cone, and a pressure relief gap is provided between the mixing chamber 21 and the feeding chamber 11. When the third material comes into contact with the side wall of the mixing chamber 21, the cone-shaped mixing chamber 21 constrains and guides the third material, causing the third material to flow to the discharge funnel 3. The pressure relief gap enables the mixing chamber 21 to communicate with the external environment, thereby ensuring the pressure balance of the mixing chamber 21.

[0036] For example, the mixing chamber 21 is formed by several trapezoidal metal plates connected by means of, but not limited to, snap-fit ​​or bolt connections, for maintenance and replacement.

[0037] Please refer to Figure 4 The material nozzle 22 is a Venturi nozzle, and several material nozzles 22 are provided. The air outlet direction of the several material nozzles 22 is set to cover the falling area of ​​the first material so as to blow the second material into the material curtain of the first material. The several material nozzles 22 blow the second material into the material curtain formed by the first material from different directions at the same time, and perform multiple and cross-penetration and agitation of the material curtain to achieve full mixing of the first material and the second material. The Venturi nozzle can expand the coverage of the jet flow and increase the disturbance intensity of the first material, thus mixing the first material and the second material.

[0038] In this embodiment, the mixing assembly 2 further includes a material bin 23 and a compressed air source 24. The outlet of the material bin 23 is connected to the suction port of the material nozzle 22 via a pipe. The material bin 23 is used to temporarily store the second material. The outlet of the compressed air source 24 is connected to the inlet of the material nozzle 22 via a pipe. The compressed air source 24 is used to output airflow to the material nozzle 22 to introduce the second material from the material bin 23 into the material nozzle 22 and to spray the second material from the outlet of the material nozzle 22. The material bin 23 is used to temporarily store the second material. The material bin 23 is connected to the material nozzle 22 to form a material supply path. The compressed air source 24 is connected to the material nozzle 22 and can provide a power source for conveying the second material, so that a negative pressure is formed at the material nozzle 22, which draws the second material out of the material bin 23 and sprays it out.

[0039] For example, in this embodiment, the material bin 23, compressed air source 24, and material nozzle 22 are all installed on any plane through a hinge structure or hinge device with limiting function, so as to adjust the position of the material bin 23 and compressed air source 24 relative to the material nozzle 22 according to the actual production environment. For example, if the material bin 23 is arranged at a high position and combined with a metering device, the material can be fed by gravity, avoiding intermittent feeding caused by insufficient suction, and improving the conveying efficiency and maximum flow rate of the second material; if the compressed air source 24 is arranged at a far end and an air storage tank is added in front of the nozzle, pressure pulsation can be absorbed, the uneven flow rate caused by pressure fluctuation can be avoided, and the stability and anti-interference ability of the jet airflow can be enhanced; the compressed air source 24 in this embodiment includes, but is not limited to, an air compressor or a blower.

[0040] like Figure 4 As shown, the discharge outlet of the discharge funnel 3 is a circular outlet; the circular outlet structure is smooth and without dead corners, which can effectively prevent the accumulation and blockage of materials at the corners of the outlet, and ensure that the mixed third material is continuously and completely transported to the downstream process; the circular outlet has natural compatibility with most standardized downstream conveying equipment, such as interfaces with pipes or packaging machines, thereby avoiding the risk of material flow disturbance, splashing or blockage caused by sudden changes in interface shape or misalignment; a pressure relief gap is also provided between the discharge funnel 3 and the mixing component 2.

[0041] Optionally, in another embodiment of this application, the discharge port of the discharge funnel 3 is a flat outlet; the flat outlet can form a wide and thin rectangular strip of material curtain when the third material is output, which increases the unfolding area of ​​the material, thereby enabling it to be directly connected to the downstream non-woven fabric processing equipment and improve production efficiency.

[0042] It should be noted that, in the embodiments of this application, the first material is a single specification of superabsorbent resin or multiple specifications of superabsorbent resin, and the second material is a single specification of superabsorbent resin or multiple specifications of superabsorbent resin; the inner wall surfaces of the mixing chamber 21 and the feeding chamber 11 are both treated with antistatic and smooth treatment. The antistatic and smooth treatment of the inner walls of the mixing chamber 21 and the feeding chamber 11 enables the third material to flow smoothly after falling in, reducing the possibility of the third material being stuck.

[0043] Specifically, in this embodiment of the application, the first material forms a continuous and uniform annular material curtain in the horizontally vibrating feed hopper 11 through the bottom circumferential through hole 13. This vibration process not only prevents material blockage, but also fully expands the material curtain through horizontal swing to increase the coverage area.

[0044] At the same time, multiple material nozzles 22 blow the second material into the falling material curtain from different directions, achieving full penetration and mixing of the material through cross-jet flow; the mixed third material flows to the discharge port under the guidance of the conical mixing chamber 21, maintaining pressure balance through pressure relief gaps during the process, and finally, according to the needs of downstream equipment, it is continuously output through a circular or flat outlet to complete the feeding process.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A superabsorbent resin online feeding device, characterized in that, include: The feeding assembly (1) includes a feeding bin (11), which is used to temporarily store the first material. The bottom of the feeding bin (11) is provided with a through hole (13) for the first material to leak out. The mixing assembly (2) includes a mixing chamber (21) and a material nozzle (22). The mixing chamber (21) is located on the side of the feeding assembly (1) near the through hole (13). The feeding end of the mixing chamber (21) is opposite to the discharging end of the feeding chamber (11). The material nozzle (22) is located on the side of the mixing chamber (21) near the feeding chamber (11). The output end of the material nozzle (22) is located on the side near the mixing chamber (21). The material nozzle (22) is used to spray out a second material so that the first material and the second material are mixed during the falling process to form a third material. The discharge hopper (3) is located at the discharge end of the mixing assembly (2) and is used to output the third material.

2. The online feeding device for superabsorbent resin according to claim 1, characterized in that: The through holes (13) are provided in a plurality of manner, and the plurality of through holes (13) are distributed circumferentially at the bottom edge of the feed bin (11), so that the first material forms a continuously falling material curtain around the upper periphery of the mixing bin (21).

3. The superabsorbent resin online feeding device according to claim 1, characterized in that: The feeding assembly (1) also includes a vibrator (12) connected to the feeding hopper (11) and the vibrator (12) is used to drive the feeding hopper (11) to vibrate so that the first material flows out from the through hole (13).

4. The superabsorbent resin online feeding device according to claim 1, characterized in that: The mixing chamber (21) is in the shape of a cone, and a pressure relief gap is provided between the mixing chamber (21) and the feeding chamber (11).

5. The online feeding device for superabsorbent resin according to claim 1, characterized in that: The material nozzles (22) are provided in a plurality of manner, and the air outlet direction of the plurality of material nozzles (22) is set to cover the falling area of ​​the first material so as to blow the second material into the material curtain of the first material.

6. The online feeding device for superabsorbent resin according to claim 5, characterized in that: The material nozzle (22) is a Venturi nozzle.

7. The online feeding device for superabsorbent resin according to claim 6, characterized in that: The mixing assembly (2) further includes a material bin (23) and a compressed air source (24). The outlet of the material bin (23) is connected to the suction port of the material nozzle (22). The material bin (23) is used to temporarily store the second material. The outlet of the compressed air source (24) is connected to the inlet of the material nozzle (22) through a pipe. The compressed air source (24) is used to output airflow to the material nozzle (22) to introduce the second material from the material bin (23) into the material nozzle (22) and to spray the second material out from the outlet of the material nozzle (22).

8. The online feeding device for superabsorbent resin according to claim 1, characterized in that: The discharge port of the discharge funnel (3) is a circular outlet.

9. The online feeding device for superabsorbent resin according to claim 1, characterized in that: The discharge port of the discharge funnel (3) is a flat outlet.

10. The online feeding device for superabsorbent resin according to claim 1, characterized in that: The inner wall surfaces of the mixing chamber (21) and the feeding chamber (11) are both treated with antistatic agents and are smooth.

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