Vacuum dryer for coating red phosphorus with flame retardant

Abstract

The vacuum drying machine comprises a machine body, a bin body and a bin door, the bin body is arranged in the machine body, the front face of the bin body is movably connected with the bin door, a layer plate is installed in the middle of the inner side of the bin body, a plurality of small holes are formed in the layer plate, a vacuum pump is installed on the outer side of the machine body, and the bin door is movably connected with the bin body. And a pipeline is mounted in the machine body. The vacuum drying device has the advantages that during vacuum drying, the output end of the electric cylinder is ejected out, the lifting grid descends and enters materials, then the output end of the electric cylinder retreats, the lifting grid ascends, part of the materials inside the materials are brought up, the materials naturally fall into the collecting box due to the design of the rib slopes of the lifting grid, and therefore the materials are dynamic, and the drying effect is good. The effective drying area of the materials is greatly increased, meanwhile, the lifting grids are free of temperature and heating drying, the materials do not have the detonation risk, and safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying machine technical field, especially a vacuum drying machine of flame retardant coating red phosphorus. BACKGROUND

[0002] The flame retardant coating red phosphorus material is a flame retardant material for improving the stability, safety and application performance of red phosphorus by surface modification of red phosphorus through coating technology.

[0003] The flame retardant coating red phosphorus material has the following problems due to the high reactivity of red phosphorus in the traditional drying process: the conventional hot air drying easily causes local overheating, resulting in oxidation or combustion of the material; static heating leads to low heat transfer efficiency and long drying period (usually 8-12 hours); material accumulation leads to large moisture gradient and poor drying uniformity. The present application solves the above technical problems through the synergistic effect of the lifting mechanism and the vacuum environment. SUMMARY

[0004] The present application aims to solve at least one of the above technical defects.

[0005] Therefore, one object of the present application is to provide a vacuum drying machine for flame retardant coating red phosphorus to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0006] To achieve the above object, an embodiment of the present application provides a vacuum drying machine for flame retardant coating red phosphorus, comprising a machine body, a bin body and a bin door, wherein the inside of the machine body is internally provided with the bin body, and the front of the bin body is movably connected with the bin door.

[0007] A layer plate is installed in the middle of the inside of the bin body, and the layer plate is provided with a plurality of small holes.

[0008] A vacuum pump is installed on the outside of the machine body, a pipeline is installed in the inside of the machine body, one end of the pipeline is connected with the vacuum pump, and the other end of the pipeline is communicated to the inside of the bin body.

[0009] A plurality of electric cylinders are installed on the top surface of the inside of the bin body, a connector is fixedly connected to the end of the output end of the electric cylinder, a lifting grid is detachably connected to the bottom of the connector, the lifting grid is composed of an internal vertical cross-shaped rib and an external frame, and the top surface of the rib is a slope.

[0010] Preferably, the shell material of the machine body is stainless steel, and the layer plate is fixed by screws at the edge.

[0011] The technical scheme is as follows: The device is specially used for vacuum drying of the phosphorus material coated with the flame retardant. The material is placed in a box, and the box is directly placed on the corresponding layer plate. The vacuum environment is provided by a vacuum pump. When the vacuum pump works, the inside of the bin body is vacuumized through the pipeline. With the decrease of the pressure, the boiling point of water is significantly reduced (for example, the boiling point is about 40 DEG C when the pressure is-0.1 MPa). The air in the bin body is extracted by the vacuum pump, so that the moisture in the material is rapidly evaporated at room temperature. The water vapor after evaporation is extracted to the condenser by the vacuum pump, and the water vapor is condensed into liquid water in the condenser by cooling water or refrigerant, and is discharged from the system.

[0012] The humidity in the bin body continues to decrease, and the moisture in the material continues to evaporate until the drying requirement is reached.

[0013] Meanwhile, the output end of the electric cylinder is ejected, the lifting grade is lowered into the material, then the output end of the electric cylinder is retracted, the lifting grade is raised, and part of the material in the material is lifted up. Due to the design of the lifting grade rib slope surface, the material naturally falls into the collection box. In this way, the material is dynamic, and the effective drying area of the material is greatly improved. Meanwhile, the lifting grade is not heated, and the material has no risk of explosion, which is safer.

[0014] The technical scheme is as follows: The technical scheme is as follows:

[0015] Vacuum coordination system:

[0016] The vacuum pump extracts the gas in the bin body through the multi-bent pipeline, and the working pressure can be reduced to-0.1 MPa with a boiling point of 40 DEG C.

[0017] The layer plate is covered with φ2-5mm small holes to ensure that the water vapor quickly escapes.

[0018] According to any one of the above schemes, the vacuum pump is horizontally installed, and the pipeline is multi-bent.

[0019] According to any one of the above schemes, the pipeline and the bin body, and the pipeline and the vacuum pump are filled with sealing gaskets at the joint, and the electric cylinder is vertically installed.

[0020] The technical scheme is as follows:

[0021] The material is loaded, and the material box containing the phosphorus material coated with the flame retardant is placed on the layer plate.

[0022] The lifting grade is inserted, and the electric cylinder pushes the lifting grade into the material and lifts it up.

[0023] Vacuum drying: start the vacuum pump, and the pressure in the bin is reduced to-0.08 MPa, corresponding to a boiling point of 45 DEG C. The evaporated water vapor enters the condenser through the pipeline, is liquefied and discharged.

[0024] Preferably, the joint is riveted to the end of the output end of the electric cylinder, and the joint is assembled with the lifting grade by screws.

[0025] Preferably, the lifting grade is integrally liftable.

[0026] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0027] The vacuum drying machine for coating red phosphorus with the flame retardant, through the cooperation of the vacuum pump, the pipeline, the electric cylinder, the joint, the cross beam, the lifting grade, the rib, and the frame, the output end of the electric cylinder is ejected, the lifting grade is lowered into the material, then the output end of the electric cylinder is retracted, the lifting grade is raised, and part of the material in the material is taken up, due to the design of the rib slope surface of the lifting grade, the material naturally falls into the collecting box, so that the material is dynamic, and the effective drying area of the material is greatly improved.

[0028] The moisture content of the material is reduced from 12% to 0.5%, and the material is uniformly dried.

[0029] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0031] Figure 1 It is a structural schematic view of the utility model;

[0032] Figure 2 It is a structural schematic view of the utility model from the first perspective;

[0033] Figure 3 It is a structural schematic view of the utility model from the second perspective;

[0034] Figure 4 It is the utility model Figure 2 It is an enlarged structural schematic view of A in the utility model;

[0035] In the drawing: 1-machine body, 2-cabin, 3-cabin door, 4-layer board, 5-vacuum pump, 6-pipeline, 7-electric cylinder, 8-joint, 9-lifting grade, 901-rib, 10-frame. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0038] As shown in the figure, the vacuum dryer for coating red phosphorus with flame retardant includes a machine body 1, a bin body 2, and a bin door 3. The bin body 2 is built-in inside the machine body 1, and the bin door 3 is movably connected to the front of the bin body 2. Figures 1-4 A layer plate 4 is mounted at the middle of the inner side of the bin body 2, and the layer plate 4 is provided with a plurality of small holes.

[0039] A vacuum pump 5 is mounted on the outside of the machine body 1, and a pipeline 6 is mounted inside the machine body 1. One end of the pipeline 6 is connected to the vacuum pump 5, and the other end of the pipeline 6 is communicated to the inside of the bin body 2.

[0040] A plurality of electric cylinders 7 are mounted on the top surface of the inner side of the bin body 2. A connector 8 is fixedly connected to the end of the output end of the electric cylinder 7. A lifting grid 9 is detachably connected to the bottom of the connector 8. The lifting grid 9 is composed of an internal vertical cross rib 901 and an external frame 10. The top surface of the rib 901 is a slope surface.

[0041] In example 1, the outer shell of the machine body is made of stainless steel, and the layer plate is fixed by screws at the edge. The overall structure is designed as a vacuum coordination system.

[0042] The vacuum pump sucks the gas in the bin body through a multi-bent pipeline, and the working pressure can be reduced to -0.1 MPa with a boiling point of 40℃.

[0043] The layer plate is covered with φ2-5mm small holes to ensure that the water vapor escapes quickly. The vacuum pump is horizontally mounted, and the pipeline is multi-bent. The joint between the pipeline and the bin body and the joint between the pipeline and the vacuum pump are filled with sealing gaskets. The electric cylinder is vertically mounted.

[0044] Operation:

[0045] Material loading: Place the material box containing the flame retardant coated red phosphorus on the layer plate.

[0046] ​

[0047] Lifting grade 9 insertion: the electric cylinder pushes the lifting grade 9 into the material and lifts up;

[0048] Vacuum drying:

[0049] Start the vacuum pump, and the pressure in the bin is reduced to-0.08MPa, corresponding to the boiling point of 45℃.

[0050] The evaporated water vapor enters the condenser through the pipeline, is liquefied and discharged.

[0051] In embodiment 2, the joint is riveted to the end of the output end of the electric cylinder, and the joint 8 is assembled with the lifting grade 9 through a screw.

[0052] The working principle of the utility model is as follows:

[0053] The device is specially used for vacuum drying of the flame retardant coated red phosphorus material. The material is placed in a box, and the box is directly placed on the corresponding layer plate. The vacuum environment is provided by a vacuum pump. When the vacuum pump works, the inside of the bin body is vacuumized through a pipeline. With the decrease of the pressure, the boiling point of water is significantly reduced (for example, the boiling point is about 40℃ when the pressure is-0.1MPa). The air in the bin body is extracted by the drying machine through the vacuum pump, so that a negative pressure environment is formed, and the moisture in the material is rapidly evaporated at room temperature. The evaporated water vapor is extracted to the condenser by the vacuum pump, and the water vapor is condensed into liquid water in the condenser by cooling water or refrigerant, and is discharged from the system.

[0054] The humidity in the bin body continuously decreases, and the moisture in the material continuously evaporates until the drying requirement is reached.

[0055] Meanwhile, the output end of the electric cylinder 7 is ejected, the lifting grade 9 is lowered into the material, then the output end of the electric cylinder 7 is retracted, the lifting grade 9 is lifted, and part of the material in the material is lifted. Due to the design of the slope surface of the rib 901 of the lifting grade 9, the material naturally falls into the collecting box. In this way, the material is dynamic, and the effective drying area of the material is greatly improved.

[0056] Compared with the prior art, the utility model has the following beneficial effects:

[0057] The vacuum drying machine for the flame retardant coated red phosphorus is provided with a vacuum pump, a pipeline, an electric cylinder, a joint, a cross beam, a lifting grade 9, a rib 901 and a frame 10, the output end of the electric cylinder 7 is ejected, the lifting grade 9 is lowered into the material, then the output end of the electric cylinder 7 is retracted, the lifting grade 9 is lifted, and part of the material in the material is lifted. Due to the design of the slope surface of the rib 901 of the lifting grade 9, the material naturally falls into the collecting box. In this way, the material is dynamic, and the effective drying area of the material is greatly improved. Meanwhile, the lifting grade 9 has no temperature and does not need to be heated and dried, so that the material has no risk of explosion and is safer.

[0058] The material moisture content is reduced from 12% to 0.5% and dried evenly.

Claims

1. A vacuum dryer for coating red phosphorus with a flame retardant, characterized by comprising: Including body, warehouse body, warehouse door, the inside of the body is built-in warehouse body, the front of the warehouse body is movably connected with the warehouse door; The middle part of the inside of the warehouse body is provided with a layer plate, and a plurality of small holes are formed in the layer plate; The outside of the body is provided with a vacuum pump, the inside of the body is provided with a pipeline, one end of the pipeline is connected with the vacuum pump, and the other end of the pipeline is communicated to the inside of the warehouse body; A plurality of electric cylinders are mounted on the top surface of the inside of the warehouse body, a connector is fixedly connected to the tail end of the output end of the electric cylinder, a lifting frame is detachably connected to the bottom of the connector, the lifting frame is composed of an internal vertical cross rib and an external frame, and the top surface of the rib is a slope.

2. A vacuum drier for coating red phosphorus with a flame retardant according to claim 1, characterized in that: The shell material of the body is stainless steel, and the layer plate is fixed by screws at the edge.

3. A vacuum drier for coating red phosphorus with a flame retardant according to claim 2, characterized in that: The vacuum pump is horizontally installed, and the pipeline is in a multi-bending shape.

4. A vacuum drier for coating red phosphorus with a flame retardant according to claim 3, characterized in that: The pipeline and the warehouse body, and the pipeline and the vacuum pump are all filled with sealing gaskets at the joint, and the electric cylinder is vertically installed.

5. A vacuum drier for coating red phosphorus with a flame retardant according to claim 4, characterized in that: The connector is riveted to the tail end of the output end of the electric cylinder, and the connector and the lifting frame are assembled by screws.

6. A vacuum drier for coating red phosphorus with a flame retardant according to claim 5, characterized in that: The lifting frame can be lifted as a whole.

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