Special water tank for PHA (polyhydroxyalkanoate) extrusion granulation

Abstract

The special water tank for PHA extrusion granulation comprises a temperature control assembly I, a temperature control assembly II and a temperature control assembly III, the tail end of the temperature control assembly I is fixedly connected with the initial end of the temperature control assembly II, a plurality of guide rollers are arranged on the outer side edges and the inner side edges of the bottoms of the temperature control assembly I, the temperature control assembly II and the temperature control assembly III, and the guide rollers are arranged on the outer side edges and the inner side edges of the bottoms of the temperature control assembly I, the temperature control assembly II and the temperature control assembly III. Compared with the prior art, the water tank has the following beneficial effects that the whole water tank structure is divided into three sections of temperature control structures by arranging the temperature control component I, the temperature control component II and the temperature control component III, so that PHA can stay for enough long time in a crystallization temperature range in an effective space to achieve a higher crystallization degree; the tail end of the water tank is dewatered through a blow-drying machine and then is directly granulated, the length of the water tank can be flexibly disassembled and assembled, and guide rollers perpendicular to the advancing direction of material strips are arranged in the first temperature control assembly, the second temperature control assembly and the third temperature control assembly, so that uniform conveying is facilitated, and granulation is more uniform.

Description

Technical Field

[0001] This utility model belongs to the technical field of extrusion granulation equipment, and specifically relates to a water tank for PHA extrusion granulation. Background Technology

[0002] PHA is a high-molecular-weight biopolymer synthesized within microbial cells. It is a biodegradable material that can replace petroleum-based materials, but its unstable molecular weight and other drawbacks inevitably necessitate modification before use. PHA crystallizes very slowly, and traditional granulation tanks cannot achieve a pelletizable state. Modification typically uses twin-screw extruders for granulation, and currently, underwater pelleting is the most common method. However, underwater pelleting requires sophisticated equipment, and for early exploratory experiments or some contract manufacturing plants, only relatively traditional traction tanks are available. This limits the preparation methods of modified PHA and restricts its application prospects. Therefore, we aim to design an extrusion granulation tank with a novel structure to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a special water tank for PHA extrusion granulation, so as to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a special water tank for PHA extrusion granulation, comprising: a temperature control component one, a temperature control component two, and a temperature control component three, wherein the end of the temperature control component one is fixedly connected to the initial end of the temperature control component two, and the end of the temperature control component two is fixedly connected to the initial end of the temperature control component three, and multiple guide rollers are provided on the outer and inner edges of the bottom of the temperature control component one, the temperature control component two, and the temperature control component three;

[0005] The temperature control component includes a right-angle slot, a connecting slot, and a connecting plate. Each end of the connecting slot is fixed to a right-angle slot by a connecting plate and bolts.

[0006] The temperature control component two includes a right-angle groove two, a connecting groove two, and a connecting plate two. Each of the two ends of the connecting groove two is fixed with a right-angle groove two by a connecting plate two and bolts.

[0007] The temperature control component three includes a right-angle groove three, a connecting groove three, and a connecting plate three. Each of the two ends of the connecting groove three is fixed with a right-angle groove three by a connecting plate three and bolts.

[0008] In a preferred embodiment, the temperature control component one further includes a feed trough and a sealing plate one. The initial end of the feed trough is connected to the external extruder outlet, and the end of the feed trough is fixedly connected to the initial end of the first connecting trough one in the temperature control component one through a right-angle groove one, a connecting plate one, and a sealing plate one. In actual use, the temperature control component one, temperature control component two, and temperature control component three are connected end to end to form a structure similar to a mosquito coil. The entire structure is divided into three temperature control sections, but is not limited to three sections. Additional sections can be added as needed. Generally, the temperature of the first section is set to 5°C below the material crystallization temperature, the second section is set to 15°C below the material crystallization temperature, and the third section is set to 25°C below the material crystallization temperature. This allows PHA to remain in the crystallization temperature range for a sufficient period of time within the available space.

[0009] In a preferred embodiment, each of the two right-angle ends of the right-angle groove is provided with a snap-fit ​​groove, the cross-section of the snap-fit ​​groove is U-shaped, the end of the sealing plate near the right-angle groove is movably snapped into the snap-fit ​​groove, and each end of the connecting groove is provided with a snap-fit ​​groove.

[0010] The first and second snap-fit ​​slots have the same specifications, and the end of the first sealing plate near the first connecting slot is movably snapped into the second snap-fit ​​slot.

[0011] In a preferred embodiment, the temperature control component two further includes a sealing plate two. The sealing plate two is movably fitted inside the connection between the right-angle groove two and the connecting groove two. The structure and size of the right-angle groove two are the same as those of the right-angle groove one.

[0012] In a preferred embodiment, the length of the second connecting groove is greater than the length of the first connecting groove, and the structure of the second connecting groove is the same as that of the first connecting groove. The structure and dimensions of the second sealing plate are the same as those of the first sealing plate, and the structure and dimensions of the first connecting plate are the same as those of the second connecting plate.

[0013] In a preferred embodiment, the temperature control component further includes a sealing plate three and a discharge trough, wherein the sealing plate three is movably fitted inside the connection between the right-angle groove three and the connecting groove three;

[0014] The structure and dimensions of the right-angle groove three are the same as those of the right-angle groove two. The initial end of the discharge groove is fixedly connected to the end of the last connecting groove three in the temperature control component three through the right-angle groove three, the connecting plate three, and the sealing plate three. In actual use, the sealing plate one, the sealing plate two, and the sealing plate three are all made of elastic material, preferably made of high-elastic rubber, and are used to seal the connection.

[0015] In a preferred embodiment, the length of the third connecting groove is greater than the length of the second connecting groove, and the structure of the third connecting groove is the same as that of the second connecting groove.

[0016] The structure and dimensions of the sealing plate three are the same as those of the sealing plate two, and the structure and dimensions of the connecting plate three are the same as those of the connecting plate two.

[0017] After adopting the above technical solution, the beneficial effects of this utility model are as follows: By setting temperature control component one, temperature control component two, and temperature control component three, the entire water tank structure is divided into three temperature control sections, but not limited to three sections. A third temperature control component can be added as needed. Generally, the temperature of the first section is set 5°C below the material crystallization temperature, the second section is set 15°C below the material crystallization temperature, and the third section is set 25°C below the material crystallization temperature. The overall structure resembles a mosquito coil (as shown in the attached instruction manual). Figure 1 As shown, the system allows PHA to remain within the crystallization temperature range for a sufficient period of time in a confined space, achieving a higher degree of crystallinity. After dehydration by a blower at the end of the tank, it is directly granulated. The tank length can be flexibly disassembled and assembled. This breakthrough in the tank design is more conducive to the extrusion granulation of PHA, a material with a very slow crystallization rate. It can be matched with various types of extruders. Since the reaction conditions of the modifiers are different, flexibly matching different types of extruders can maximize the effect of different modifiers to a certain extent. It provides more experimental space for PHA extrusion blending modification, and the PHA modification modifiers can be selected more flexibly and efficiently. It can also save factory space, and the length and temperature can be flexibly set, making PHA more efficient in achieving a granulation state.

[0018] Inside temperature control components one, two, and three, there are guide rollers perpendicular to the direction of material movement. These rollers can be used to position the molten sample and reduce the resistance of conveying. The sample is evenly distributed. Guide rollers are also installed at the corners of right-angle groove one, right-angle groove two, and right-angle groove three to help with uniform conveying and make granulation more uniform. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a water tank for PHA extrusion granulation according to the present invention.

[0021] Figure 2This is a schematic diagram of the main view of the connecting groove of a water tank for PHA extrusion granulation according to this utility model.

[0022] Figure 3 for Figure 1 An enlarged schematic diagram of point A in the middle.

[0023] In the diagram, 100 is the temperature control component, 110 is the feed trough, 120 is the right-angle groove, 130 is the connecting groove, 131 is the snap-fit ​​groove, 140 is the connecting plate, and 150 is the sealing plate.

[0024] 200 - Temperature control component II; 210 - Right-angle groove II; 220 - Connecting groove II; 230 - Connecting plate II; 240 - Sealing plate II;

[0025] 300-Temperature control component three, 310-Right angle groove three, 320-Connecting groove three, 330-Discharge groove, 340-Connecting plate three, 350-Sealing plate three. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 3 This utility model provides a technical solution: a special water tank for PHA extrusion granulation, including: a temperature control component 100, a temperature control component 200, and a temperature control component 300. The end of the temperature control component 100 is fixedly connected to the initial end of the temperature control component 200, and the end of the temperature control component 200 is fixedly connected to the initial end of the temperature control component 300. Multiple guide rollers 400 are provided on the outer and inner edges of the bottom of the temperature control component 100, the temperature control component 200, and the temperature control component 300.

[0028] The temperature control component 100 includes a right-angle slot 120, a connecting slot 130, and a connecting plate 140. Each end of the connecting slot 130 is fixed to a right-angle slot 120 by a connecting plate 140 and bolts.

[0029] Temperature control component 200 includes right angle slot 210, connecting slot 220 and connecting plate 230. Each end of connecting slot 220 is fixed to right angle slot 210 by a connecting plate 230 and bolts.

[0030] The temperature control component 300 includes a right-angle slot 310, a connecting slot 320, and a connecting plate 340. Each end of the connecting slot 320 is fixed to a right-angle slot 310 by a connecting plate 340 and bolts.

[0031] As the first embodiment of this utility model, guide rollers 400 perpendicular to the material bar's forward direction are provided inside temperature control component 100, temperature control component 200, and temperature control component 300. These guide rollers can be evenly distributed to position the molten sample bar and reduce conveying resistance. Guide rollers 400 are also provided at the corners of right-angle groove 120, right-angle groove 210, and right-angle groove 3, which helps to convey the material evenly and make granulation more uniform.

[0032] Please see Figure 1 , Figure 3 The temperature control component 100 also includes a feed trough 110 and a sealing plate 150. The initial end of the feed trough 110 is connected to the external extruder outlet. The end of the feed trough 110 is fixedly connected to the initial end of the first connecting groove 130 in the temperature control component 100 through a right-angle groove 120, a connecting plate 140, and a sealing plate 150. In actual use, the temperature control component 100, the temperature control component 200, and the temperature control component 300 are connected end to end to form a structure similar to a mosquito coil. The entire structure is divided into three temperature control sections, but is not limited to three sections. Additional sections can be added as needed. Generally, the first section temperature is set 5°C below the material crystallization temperature, the second section is set 15°C below the material crystallization temperature, and the third section is set 25°C below the material crystallization temperature. This allows PHA to remain in the crystallization temperature range for a sufficient amount of time within the available space.

[0033] Each of the two right-angle ends of the right-angle groove 120 is provided with a snap-fit ​​groove 131. The cross-section of the snap-fit ​​groove 131 is U-shaped. The end of the sealing plate 150 near the right-angle groove 120 is movably snapped into the snap-fit ​​groove 1. Each of the two ends of the connecting groove 130 is provided with a snap-fit ​​groove 2.

[0034] The first snap-fit ​​groove 131 has the same specifications as the second snap-fit ​​groove, and the end of the sealing plate 150 near the connecting groove 130 is movably snapped into the inside of the second snap-fit ​​groove.

[0035] Temperature control component 200 also includes sealing plate 240. The sealing plate 240 is installed inside the connection between right angle groove 210 and connecting groove 220. The structure and size of right angle groove 210 are the same as those of right angle groove 120.

[0036] The length of connecting groove 220 is greater than the length of connecting groove 130, and the structure of connecting groove 220 is the same as that of connecting groove 130. The structure and dimensions of sealing plate 240 are the same as those of sealing plate 150. The structure and dimensions of connecting plate 140 are the same as those of connecting plate 230.

[0037] The temperature control assembly also includes a sealing plate 350 and a discharge chute 330. The sealing plate 350 is installed inside the connection between the right-angle groove 310 and the connecting groove 320.

[0038] The structure and dimensions of the right-angle groove 310 are the same as those of the right-angle groove 210. The initial end of the discharge groove 330 is fixedly connected to the end of the last connecting groove 320 in the temperature control component 300 through the right-angle groove 310, the connecting plate 340, and the sealing plate 350. In actual use, the sealing plate 150, the sealing plate 240, and the sealing plate 350 are all made of elastic material, preferably made of high-elastic rubber, and are used to seal the connection.

[0039] The length of connecting groove 320 is greater than the length of connecting groove 220, and the structure of connecting groove 320 is the same as that of connecting groove 220.

[0040] The structure and dimensions of sealing plate 350 are the same as those of sealing plate 240, and the structure and dimensions of connecting plate 340 are the same as those of connecting plate 230.

[0041] As a second embodiment of this utility model, based on the first embodiment described above, the entire water tank structure is divided into three temperature control sections by setting temperature control component one 100, temperature control component two 200, and temperature control component three 300. However, it is not limited to three sections; a third temperature control component can be added as needed. Generally, the temperature of the first section is set 5°C below the material crystallization temperature, the second section is set 15°C below the material crystallization temperature, and the third section is set 25°C below the material crystallization temperature. The overall structure resembles a mosquito coil (as shown in the attached instruction manual). Figure 1As shown, the system allows PHA to remain within the crystallization temperature range for a sufficient period of time in a confined space, achieving a higher degree of crystallinity. After dehydration by a blower at the end of the tank, it is directly granulated. The tank length can be flexibly disassembled and assembled. This breakthrough in the tank design is more conducive to the extrusion granulation of PHA, a material with a very slow crystallization rate. It can be matched with various types of extruders. Since the reaction conditions of the modifying agents are different, flexibly matching different types of extruders can maximize the effect of different modifying agents to a certain extent. It provides more experimental space for PHA extrusion blending modification, and the PHA modification agents can be selected more flexibly and efficiently. It can also save factory space, and the length and temperature can be flexibly set, making PHA more efficient in achieving a pelletizable state.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water tank specifically for PHA extrusion granulation, comprising: Temperature control component one (100), temperature control component two (200) and temperature control component three (300) are characterized in that the end of temperature control component one (100) is fixedly connected to the initial end of temperature control component two (200), the end of temperature control component two (200) is fixedly connected to the initial end of temperature control component three (300), and multiple guide rollers are provided on the outer edge and inner edge of the bottom of temperature control component one (100), temperature control component two (200) and temperature control component three (300); The temperature control component 1 (100) includes a right-angle groove 1 (120), a connecting groove 1 (130) and a connecting plate 1 (140). Each of the two ends of the connecting groove 1 (130) is fixed to a right-angle groove 1 (120) by a connecting plate 1 (140) and bolts. The temperature control component 2 (200) includes a right-angle groove 2 (210), a connecting groove 2 (220) and a connecting plate 2 (230). Each of the two ends of the connecting groove 2 (220) is fixed with a right-angle groove 2 (210) by a connecting plate 2 (230) and bolts. The temperature control component three (300) includes a right-angle groove three (310), a connecting groove three (320) and a connecting plate three (340). Each of the two ends of the connecting groove three (320) is fixed with a right-angle groove three (310) by a connecting plate three (340) and bolts.

2. The PHA extrusion granulation-specific water tank as described in claim 1, characterized in that: The temperature control component (100) further includes a feed trough (110) and a sealing plate (150). The initial end of the feed trough (110) is connected to the external extruder outlet. The end of the feed trough (110) is fixedly connected to the initial end of the first connecting groove (130) in the temperature control component (100) through a right-angle groove (120), a connecting plate (140), and a sealing plate (150).

3. The PHA extrusion granulation water tank as described in claim 2, characterized in that: Each of the two right-angle ends of the right-angle groove 1 (120) is provided with a snap-fit ​​groove 1 (131). The cross-section of the snap-fit ​​groove 1 (131) is U-shaped. The end of the sealing plate 1 (150) near the right-angle groove 1 (120) is movably snapped into the snap-fit ​​groove 1. Each of the two ends of the connecting groove 1 (130) is provided with a snap-fit ​​groove 2. The first snap-fit ​​groove (131) and the second snap-fit ​​groove have the same specifications, and the end of the first sealing plate (150) near the first connecting groove (130) is movably snapped into the second snap-fit ​​groove.

4. The PHA extrusion granulation water tank as described in claim 3, characterized in that: The temperature control component two (200) also includes a sealing plate two (240). The sealing plate two (240) is installed inside the connection between the right angle groove two (210) and the connecting groove two (220). The structure of the right angle groove two (210) is the same as that of the right angle groove one (120) in terms of structure and size.

5. The PHA extrusion granulation special water tank as described in claim 4, characterized in that: The length of the second connecting groove (220) is greater than the length of the first connecting groove (130), and the structure of the second connecting groove (220) is the same as that of the first connecting groove (130). The structure and dimensions of the second sealing plate (240) are the same as those of the first sealing plate (150). The structure and dimensions of the first connecting plate (140) are the same as those of the second connecting plate (230).

6. The PHA extrusion granulation-specific water tank as described in claim 5, characterized in that: The temperature control assembly also includes a sealing plate three (350) and a discharge trough (330). The sealing plate three (350) is installed inside the connection between the right angle trough three (310) and the connecting trough three (320). The structure and dimensions of the right-angle groove three (310) are the same as those of the right-angle groove two (210). The initial end of the discharge groove (330) is fixedly connected to the end of the last connecting groove three (320) in the temperature control component three (300) through the right-angle groove three (310), the connecting plate three (340) and the sealing plate three (350).

7. A water tank for PHA extrusion granulation as described in claim 6, characterized in that: The length of the third connecting groove (320) is greater than the length of the second connecting groove (220), and the structure of the third connecting groove (320) is the same as that of the second connecting groove (220); The structure and dimensions of the sealing plate three (350) are the same as those of the sealing plate two (240), and the structure and dimensions of the connecting plate three (340) are the same as those of the connecting plate two (230).

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