Material storage bin homogenizing device

Abstract

The material storage bin homogenizing device comprises a homogenizing bin, a first inlet of the homogenizing bin is located in the top, an outlet of the homogenizing bin is located in the bottom, the bottom of the homogenizing bin is in an inverted cone shape with the thick upper portion and the thin lower portion, a center pipe and a homogenizing cone are arranged on the bottom of the homogenizing bin, and the homogenizing cone is arranged on the outer side of the center pipe in a sleeved mode. One ends of the homogenizing cone and the central pipe face the first inlet of the homogenizing bin, and the other ends face the outlet of the homogenizing bin. According to the homogenizing stock bin, modification is carried out on the basis of an original polycarbonate granule finished product stock bin, the central pipe and the homogenizing cone are additionally arranged, after materials reach the bottom material level of the homogenizing stock bin, the materials are divided into three layers of areas through the central pipe and the homogenizing cone, the materials in all the layers of areas reach the bottom mixing area at different flow speeds, and therefore full mixing of the materials can be achieved; therefore, the stability of the PC product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of silos, and particularly relates to a polycarbonate pellet storage silo homogenizing device. Background Art

[0002] The processing technology of polycarbonate (hereinafter referred to as PC) pellets is complex and produced continuously. The product stability is difficult to be effectively controlled. The fluctuation of process indicators will affect product indicators such as fluidity, appearance B value, yellowing resistance, etc., causing fluctuations in subsequent PC product processing indicators.

[0003] Therefore, how to improve the stability of PC products has become a technical defect that needs to be urgently solved in the industry and is a problem that technical personnel in this field need to solve urgently. Utility Model Content

[0004] The purpose of the utility model is to provide a material storage bin homogenizing device, which can achieve full mixing of materials, thereby improving the stability of PC products.

[0005] In order to solve the above technical problems, the utility model provides a material storage bin homogenizing device, comprising: a homogenizing bin;

[0006] The first inlet of the homogenizing silo is located at the top, and the outlet is located at the bottom, and the bottom of the homogenizing silo is an inverted cone with a thick top and a thin bottom;

[0007] A central tube and a homogenizing cone are provided at the bottom of the homogenizing silo, and the homogenizing cone is sleeved on the outside of the central tube. One end of the homogenizing cone and the central tube faces the first inlet of the homogenizing silo, and the other end faces the outlet of the homogenizing silo. The central tube, the homogenizing cone and the bottom silo wall of the homogenizing silo are sequentially divided into three layers from the inside to the outside, and the materials in the regions of each layer reach the outlet of the homogenizing silo at different flow rates.

[0008] Optionally, in the above-mentioned material storage silo homogenizing device, the central tube, the homogenizing cone and the bottom of the homogenizing silo are coaxially arranged.

[0009] Optionally, in the above-mentioned material storage silo homogenization device, a dividing rib plate is provided between the central tube and the homogenization cone, and / or between the homogenization cone and the bottom silo wall of the homogenization silo, and the dividing rib plate is used to divide the area of ​​the layer where the dividing rib plate is located into multiple independent material areas.

[0010] Optionally, in the above-mentioned material storage bin homogenizing device, the number of the dividing ribs is multiple.

[0011] Optionally, in the above-mentioned material storage bin homogenizing device, two ends of the central tube penetrate through and extend out of two ends of the homogenizing cone.

[0012] Optionally, in the above-mentioned material storage silo homogenizing device, a dust collector is provided on the homogenizing silo to remove dust from the air exhausted from the homogenizing silo.

[0013] Optionally, in the above-mentioned material storage silo homogenizing device, the outlet of the homogenizing silo is connected in series with a pneumatic gate valve, a rotary valve and a feeding shoe through a pipeline, and the outlet of the feeding shoe is connected to the second inlet of the homogenizing silo.

[0014] Optionally, in the above-mentioned material storage bin homogenizing device, it also includes a reversing valve connected in series between the pneumatic gate valve and the rotary valve, the inlet of the reversing valve is connected to the outlet of the pneumatic gate valve, the first outlet of the reversing valve is connected to the inlet of the rotary valve, and the second outlet is connected to the packaging machine.

[0015] Optionally, in the above-mentioned material storage bin homogenizing device, a powder remover is connected in series between the second outlet of the reversing valve and the packaging machine.

[0016] Optionally, in the above-mentioned material storage silo homogenizing device, an exhaust hopper is connected in series between the first outlet of the reversing valve and the rotary valve, the material outlet of the exhaust hopper is connected to the rotary valve, and the gas outlet is connected to the third inlet of the homogenizing silo.

[0017] The utility model provides a material storage bin homogenizing device, which has the following beneficial effects:

[0018] The original polycarbonate pellet finished product silo was modified by adding two mixing internal parts, a center pipe and a homogenizing cone. When the material reaches the bottom material level of the homogenizing silo, the center pipe and the homogenizing cone divide the material into three layers. The material in each layer reaches the bottom mixing area at a different flow rate, which can achieve full mixing of the material and improve the stability of PC products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A system flow chart of a material storage bin homogenizing device provided by an embodiment of the utility model;

[0021] Figure 2 A structural schematic diagram of a material storage bin homogenizing device provided in an embodiment of the utility model;

[0022] Figure 3A schematic diagram of the structure of a homogenizing silo provided in an embodiment of the utility model;

[0023] Figure 4 This is a partial enlarged view of the bottom of the homogenizing silo provided in an embodiment of the utility model.

[0024] In the above picture:

[0025] 1-homogenizing silo; 101-central tube; 102-homogenizing cone; 103-bottom silo wall;

[0026] 2-Pneumatic gate valve;

[0027] 3- reversing valve;

[0028] 4- Deduster;

[0029] 5- Exhaust hopper;

[0030] 6- Rotary valve;

[0031] 7-Feeding boots;

[0032] 8-Dust collector;

[0033] 9-Packing machine;

[0034] Q-compressed air; W-material. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The core of the utility model is to provide a material storage bin homogenizing device, which can achieve full mixing of materials, thereby improving the stability of PC products.

[0037] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Specifically, please refer to Figure 1-Figure 4 , Figure 1 A system flow chart of a material storage bin homogenizing device provided by an embodiment of the utility model; Figure 2 A structural schematic diagram of a material storage bin homogenizing device provided in an embodiment of the utility model; Figure 3 A schematic diagram of the structure of a homogenizing silo provided in an embodiment of the utility model; Figure 4 This is a partial enlarged view of the bottom of the homogenizing silo provided in an embodiment of the utility model.

[0039] The utility model provides a material storage bin homogenizing device, comprising: a homogenizing bin 1.

[0040] The first inlet of the homogenizing silo 1 is located at the top, and is used to pass the material W (PC pellets). The outlet of the homogenizing silo 1 is located at the bottom, and the bottom of the homogenizing silo 1 is an inverted cone with a thick top and a thin bottom.

[0041] A central tube 101 and a homogenizing cone 102 are provided at the bottom of the homogenizing silo 1. The homogenizing cone 102 is sleeved on the outside of the central tube 101. One end of the homogenizing cone 102 and the central tube 101 faces the first inlet of the homogenizing silo 1, and the other end faces the outlet of the homogenizing silo 1. The central tube 101, the homogenizing cone 102 and the bottom silo wall 103 of the homogenizing silo 1 are sequentially divided into three layers from the inside to the outside. The material W in each layer reaches the outlet of the homogenizing silo 1 at a different flow rate, so that the material entering the first inlet of the homogenizing silo 1 is redistributed and mixed again at the outlet, and no auxiliary mechanism movement is required in this process.

[0042] It should be noted that the homogenizing cone 102 is a conical hollow tube with a thick top and a thin bottom, and the central tube 101 is a cylindrical hollow tube. Since the central tube 101, the homogenizing cone 102 and the bottom silo wall 103 of the homogenizing silo 1 have different wall angles and different installation positions, the unloading speeds of the components are different.

[0043] The utility model provides a material storage silo homogenizing device, which transforms the original polycarbonate pellet finished product silo, and adds two homogenizing internal parts, a central pipe 101 and a homogenizing cone 102, according to the structural size of the homogenizing silo 1. When the material W reaches the bottom material level of the homogenizing silo 1, the central pipe 101 and the homogenizing cone 102 divide the material into three layers, and the material in each layer reaches the bottom mixing zone at a different flow rate, which can achieve full mixing of the material, thereby improving the stability of the PC product.

[0044] In order to achieve uniform mixing, the central tube 101, the homogenizing cone 102 and the bottom of the homogenizing silo 1 are coaxially arranged.

[0045] In a specific embodiment, a partition rib is provided between the central tube 101 and the homogenizing cone 102, and / or between the homogenizing cone 102 and the bottom silo wall 103 of the homogenizing silo 1, and the partition rib is used to divide the area of ​​the layer where the partition rib is located into multiple independent material areas.

[0046] There may be a plurality of partition ribs, and the plurality of partition ribs may be evenly spaced in the circumferential direction of each layer, so that the plurality of material areas of the layer may be of the same size.

[0047] The partition ribs and the central tube 101 and the homogenizing cone 102, and / or the homogenizing cone 102 and the bottom silo wall 103 of the homogenizing silo 1 can be connected together by welding or bolting.

[0048] Furthermore, two ends of the central tube 101 penetrate through and extend out of two ends of the homogenizing cone 102. Figure 3-Figure 4 As shown, the upper part of the homogenizing silo 1 is a cylindrical section and the bottom is an inverted cone section. The top of the central tube 101 is higher than the inverted cone section of the homogenizing silo 1 and is located in the cylindrical section. The central tube 101 located at the center can receive the falling materials first. In particular, when the inclinations of the central tube 101, the homogenizing cone 102 and the bottom silo wall 103 are designed to decrease in sequence, the materials W entering the first inlet of the homogenizing silo 1 in the same time period will be discharged from the outlets of the central tube 101, the homogenizing cone 102 and the bottom silo wall 103 in sequence from first to last, and enter the outlet area of ​​the homogenizing silo 1 to achieve redistribution and mixing.

[0049] In a specific embodiment, a dust collector 8 is provided on the homogenizing silo 1 to remove dust from the air discharged from the homogenizing silo 1. The dust collector 8 may be a bag dust collector 8. The bag dust collector 8 is a dry dust filtering device. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag provided therein is made of a textile filter cloth or a non-textile felt, and the dust-containing gas is filtered by the filtering effect of the fiber fabric. When the dust-containing gas enters the bag dust collector 8, the dust with large particles and high specific gravity settles down due to the action of gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.

[0050] In particular, the dust collector 8 can be arranged on the top of the homogenizing silo 1, and the internal filter element can be used to remove dust from the exhaust air, thereby reducing environmental pollution.

[0051] In a specific embodiment, the outlet of the homogenizing silo 1 is connected in series with a pneumatic gate valve 2, a rotary valve 6 and a feeding shoe 7 through a pipeline, and the outlet of the feeding shoe 7 is connected to the second inlet of the homogenizing silo 1.

[0052] Among them, the pneumatic gate valve 2 is suitable for the flow or delivery control of powder, granular material, granular material and small piece material, and can quickly control the flow change or quickly cut off. The pneumatic gate valve 2 has the advantages of simple structure, flexible operation, light weight, and no jamming. The installation is not restricted by angles, easy to operate, and the scale can be adjusted at any time. The rotary valve 6 can effectively prevent the reverse flow of the airflow, thereby ensuring the stability of the air pressure in the system and the normal discharge of the material. The feeding boot 7 is a special accessory of the rotary valve 6. The material enters the rotary valve 6 under the action of gravity. The rotary valve 6 then forces the material to be fed into the feeding boot 7 at the bottom. In the feeding boot 7, the material is fully mixed with the conveying gas (compressed air Q from the outside), and then is transported to the second inlet of the homogenizing silo 1 to complete the self-homogenizing mixing of the granular material cycle.

[0053] The present solution also includes a reversing valve 3 connected in series between the pneumatic gate valve 2 and the rotary valve 6. The inlet of the reversing valve 3 is connected to the outlet of the pneumatic gate valve 2. The first outlet of the reversing valve 3 is connected to the inlet of the rotary valve 6, and the second outlet is connected to the packaging machine 9. The reversing valve 3 includes an inlet and two outlets. The first outlet is used to continue mixing the material, and the second outlet is used to discharge the mixed material. When the reversing valve 3 is switched to the first outlet connected to the rotary valve 6, the material enters the rotary valve 6 under the action of gravity. When the reversing valve 3 is switched to the second outlet connected to the packaging machine 9, the material is transported to the packaging machine 9, thereby obtaining the corresponding product.

[0054] Specifically, a powder remover 4 is connected in series between the second outlet of the reversing valve 3 and the packaging machine 9, and the powder remover 4 can remove dust in the material.

[0055] In a specific embodiment, an exhaust hopper 5 is connected in series between the first outlet of the reversing valve 3 and the rotary valve 6 , the material outlet of the exhaust hopper 5 is connected to the rotary valve 6 , and the gas outlet is connected to the third inlet of the homogenizing silo 1 .

[0056] The exhaust hopper 5 has been widely used in the prior art. For example, the exhaust hopper 5 is a double-layer structure, the inner layer is used for material discharge, and its material outlet is connected to the rotary valve 6, and the outer layer is used to discharge the gas leaked from the rotary valve 6 and the gas generated by material discharge, and the gas is discharged from the gas outlet to the homogenizing silo 1. Due to the centrifugal force of the swirl formed by the airflow, the material is discharged from the material outlet, and the gas is discharged from the gas outlet of the exhaust hopper 5 into the upstream equipment. By arranging the exhaust hopper 5, the material discharge capacity of the rotary valve 6 can be improved to ensure smooth material discharge.

[0057] In a specific embodiment, a pneumatic gate valve 2, a reversing valve 3, a rotary valve 6, an exhaust hopper 5 and a feeding shoe 7 are added to the outlet of the homogenizing silo 1, a bag dust collector 8 is added to the top of the homogenizing silo 1, and an air regulating valve, a flow meter, a pressure transformer and other equipment are added for transformation. Based on the original process, the original extruder pellets are transported to the homogenizing silo 1 of polycarbonate pellets by wind dense phase, and the pellets pass through the pneumatic gate valve 2 at the bottom of the homogenizing silo 1 in turn, and the reversing valve 3 switches the outlet to realize the two modes of material selection packaging or continued homogenization. When the reversing valve 3 switches to the outlet connected to the packaging machine 9, the material is transported to the packaging machine 9, thereby obtaining the corresponding product. When the reversing valve 3 switches to the outlet connected to the rotary valve 6, the pneumatic gate valve 2 is used to adjust the amount of material entering the rotary valve 6, and the material enters the feeding shoe 7 through the rotary valve 6. The compressed air Q is used as a power source to blow the material entering the feeding shoe 7 to the top of the homogenizing silo 1, thereby realizing the self-homogenization of the pellets. The air is discharged after the dust is removed by the bag filter 8.

[0058] The number of times the pellets are circulated for self-mixing can be adaptively selected according to actual needs. For example, after a preset time, the first outlet of the reversing valve 3 is switched to the second outlet for discharge, which will not be further elaborated here.

[0059] In summary, the present invention provides a material storage silo homogenizing device, which transforms the existing polycarbonate pellet silo that does not have a mixing function into a homogenizing silo 1 with a mixing function. The use of the homogenizing silo 1 can improve the qualified rate of PC products, effectively improve the performance of PC products with fluctuating indicators, and make unstable defective PC products become qualified products after homogenization, thereby enhancing the competitiveness of PC materials among peers.

[0060] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] In the description of this application, the meaning of "plurality" is more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0062] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0063] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0064] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A material storage bin homogenizing device, characterized in that: include: Homogenizing silo; The first inlet of the homogenizing silo is located at the top, and the outlet is located at the bottom, and the bottom of the homogenizing silo is an inverted cone with a thick top and a thin bottom; A central tube and a homogenizing cone are provided at the bottom of the homogenizing silo, and the homogenizing cone is sleeved on the outside of the central tube. One end of the homogenizing cone and the central tube faces the first inlet of the homogenizing silo, and the other end faces the outlet of the homogenizing silo. The central tube, the homogenizing cone and the bottom silo wall of the homogenizing silo are sequentially divided into three layers from the inside to the outside, and the materials in the regions of each layer reach the outlet of the homogenizing silo at different flow rates.

2. The material storage bin homogenizing device according to claim 1, characterized in that: The central tube, the homogenizing cone and the bottom of the homogenizing silo are coaxially arranged.

3. The material storage bin homogenizing device according to claim 1, characterized in that: A partition rib is provided between the central tube and the homogenizing cone, and / or between the homogenizing cone and the bottom silo wall of the homogenizing silo. The partition rib is used to divide the area of ​​the layer where the partition rib is located into a plurality of independent material areas.

4. The material storage bin homogenizing device according to claim 3, characterized in that: The number of the partition ribs is multiple.

5. The material storage bin homogenizing device according to claim 1, characterized in that: Two ends of the central tube penetrate through and extend out of two ends of the homogenizing cone.

6. The material storage bin homogenizing device according to claim 1, characterized in that: The homogenizing silo is provided with a dust collector for removing dust from the air exhausted from the homogenizing silo.

7. The material storage bin homogenizing device according to claim 1, characterized in that: The outlet of the homogenizing silo is connected in series with a pneumatic gate valve, a rotary valve and a feeding shoe in sequence through a pipeline, and the outlet of the feeding shoe is communicated with the second inlet of the homogenizing silo.

8. The material storage bin homogenizing device according to claim 7, characterized in that: It also includes a reversing valve connected in series between the pneumatic gate valve and the rotary valve, the inlet of the reversing valve is connected to the outlet of the pneumatic gate valve, the first outlet of the reversing valve is connected to the inlet of the rotary valve, and the second outlet is connected to the packaging machine.

9. The material storage bin homogenizing device according to claim 8, characterized in that: A powder remover is connected in series between the second outlet of the reversing valve and the packaging machine.

10. The material storage bin homogenizing device according to claim 8, characterized in that: An exhaust hopper is connected in series between the first outlet of the reversing valve and the rotary valve, the material outlet of the exhaust hopper is communicated with the rotary valve, and the gas outlet is communicated with the third inlet of the homogenizing silo.

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