Slow pressure exhaust device for LFT-D modified material granulation bin

Abstract

The utility model belongs to the technical field of LFT-D modified plastic processing equipment, and particularly relates to an LFT-D modified material granulation bin pressure-relief exhaust device which comprises a storage bin, a feeding end and a pressure-relief exhaust mechanism. The slow-pressure exhaust mechanism comprises an exhaust channel, a conical slow-pressure filtering piece and a filtering system, the conical slow-pressure filtering piece and the filtering system are arranged in the exhaust channel, the conical slow-pressure filtering piece is used for blocking materials and playing a role in slow-pressure filtering on the materials, and the filtering system is arranged at the rear end of the slow-pressure filtering piece and used for filtering. The utility model provides a slow-pressure exhaust device for an LFT-D modified material granulation bin, which can meet the requirements of double-screw extrusion granulation production and processing of LFT-D modified materials or crushed materials, has good slow-pressure exhaust effect, is convenient to install, is simple to process and produce, has low cost and good economic effect, and is suitable for wide-range popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of LFT-D modified plastic processing equipment, and particularly relates to a pressure-relieving and exhaust device for a granulating silo of LFT-D modified material. Background Art

[0002] In order to improve the feeding stability of the LFT-D process, LFT-D modified materials or crushed materials are generally processed by twin-screw extrusion granulation. After the LFT-D modified materials or crushed materials are stirred and discharged from the high-speed mixer into the storage silo, there is a certain height difference between the high-speed mixer and the storage silo, and they are connected by a feeding pipeline. An exhaust hole is provided on the storage silo for exhausting gas.

[0003] Since the LFT-D modified materials or crushed materials contain powder materials, and these powder materials are not surface-treated and have a small adsorption capacity for resins, a large amount of dust is easily generated during the stirring process using a high-speed mixer. When discharging the materials, the high-speed mixer is in a stirring state and discharges the materials quickly, which will also generate air pressure, resulting in an increase in the amount of dust. The generated dust is discharged through the exhaust hole of the storage silo, causing environmental pollution.

[0004] At present, there are two ways to deal with the exhaust hole of the storage silo. One is to close the exhaust hole and add a pressure-reducing device to the storage silo. This method is relatively expensive and uneconomical. The second is to add a dust-proof cover to the exhaust hole. The dust-proof cover is closely attached to the exhaust hole, which is beneficial to controlling dust, but is not conducive to gas discharge and the effect is not good. Content of the Utility Model

[0005] The utility model provides a pressure-relieving and exhaust device for a granulating silo of LFT-D modified material, which can solve the problems pointed out in the background art.

[0006] A pressure-relieving and exhaust device for a granulating silo of LFT-D modified material includes a storage silo, a feeding end, and a pressure-relieving and exhaust mechanism; the pressure-relieving and exhaust mechanism includes an exhaust passage, a conical pressure-relieving filter element arranged in the exhaust passage, and a filtering system. The conical pressure-relieving filter element is used to block materials and plays a role in pressure-relieving and filtering of the materials. The filtering system is arranged at the rear end of the pressure-relieving filter element and is used for filtering.

[0007] Preferably, the conical pressure-relieving filter element is a conical fabric, which is arranged along the length direction of the exhaust passage.

[0008] Preferably, the conical fabric is a pure textile fabric or a blended textile fabric or an interwoven fabric or a plain weave fabric or a twill weave fabric.

[0009] Preferably, the filtering system includes primary filtering and secondary filtering.

[0010] Preferably, the primary filtering is a filter screen, and the secondary filtering is activated carbon filtering.

[0011] Preferably, the exhaust passage is vertically arranged and includes a housing and an internal skeleton, and both ends of the conical pressure-relieving filter element are fixed on the internal skeleton.

[0012] Preferably, a pressure tester is provided on the exhaust passage.

[0013] Beneficial effects: The utility model provides a pressure-relieving exhaust device for an LFT-D modified material granulation bin, which can meet the twin-screw extrusion granulation production and processing of LFT-D modified materials or crushed materials, has a good pressure-relieving exhaust effect, is convenient for installation, has a simple device processing and production, low cost, good economic effect, and is suitable for large-scale popularization. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the utility model,

[0015] Figure 2 is a schematic cross-sectional view of the pressure-relieving exhaust mechanism of the utility model,

[0016] Figure 3 is a schematic structural diagram of the pressure-relieving exhaust mechanism of the utility model,

[0017] Description of the Reference Numerals in the Drawings:

[0018] Reference numerals in the figures: storage bin 1; feeding end 2; pressure-relieving exhaust mechanism 3; exhaust passage 31; housing 311; internal skeleton 312; conical pressure-relieving filter element 32; primary filter 33; secondary filter 34; pressure tester 5. Detailed Embodiments

[0019] The following combines the drawings to describe in detail a specific embodiment of the utility model, but it should be understood that the protection scope of the utility model is not limited by the specific embodiment.

[0020] Embodiment As Figures 1-3 shown, a pressure-relieving exhaust device for an LFT-D modified material granulation bin provided by an embodiment of the utility model includes a storage bin 1, a feeding end 2, and a pressure-relieving exhaust mechanism 3; the pressure-relieving exhaust mechanism 3 includes an exhaust passage 31, a conical pressure-relieving filter element 32 arranged in the exhaust passage 31, and a filtering system. The conical pressure-relieving filter element 32 is used to block materials and plays a role in pressure-relieving filtration of the materials. The filtering system is arranged at the rear end of the pressure-relieving filter element 32 and is used for filtration.

[0021] Specifically, the exhaust passage 31 is vertically arranged and includes a housing 311 and an internal skeleton 312. Both ends of the conical pressure-relieving filter element 32 are fixed on the internal skeleton 312, and the fixing method can be detachable connection by bolts. Fixing disks with fixing holes can be provided at both ends of the conical pressure-relieving filter element 32 and are detachably fixed on the internal skeleton 312 by bolts, so that it can be replaced and cleaned.

[0022] Specifically, the conical pressure-relieving filter element 32 is a conical fabric, which is arranged along the length direction of the exhaust passage 31. The conical fabric is a pure textile fabric or a blended textile fabric or an interwoven fabric or a plain weave fabric or a twill weave fabric.

[0023] The design of the conical fabric has two advantages. First, it conforms to the flow characteristics of the gas. When the fluid flows upward, it can increase the resistance to the fluid and achieve the pressure-relieving effect. Second, it is convenient for the powder to fall back into the storage bin 1 and prevent the waste of powder discharge.

[0024] Specifically, the filtration system includes a primary filtration 33 and a secondary filtration 34. The primary filtration 33 is a filter screen, and the secondary filtration 34 is an activated carbon filtration.

[0025] The filter screen is fixed on the internal skeleton 312 at the rear end of the conical pressure-relieving filter element 32. The aperture of the filter screen is 1000 - 5000 meshes, and the aperture of the filter screen is adjusted according to requirements. The mesh number of the filter screen aperture should be greater than the median particle size mesh number of the powder.

[0026] The activated carbon filtration is an activated carbon filter box with activated carbon inside for dust removal treatment. The aperture of the air outlet of the filter box is 30 - 100 meshes.

[0027] A pressure tester 5 is provided on the exhaust passage 31. The pressure tester 5 detects the pressure in the pressure-relieving exhaust mechanism 3. When the set pressure is exceeded, it indicates that the filtration system needs to be cleaned or replaced, effectively avoiding the blockage of the filtration system, resulting in the discharge of dust or gas from other gaps of the equipment, causing environmental pollution and also affecting the granulation quality. The pressure tester 5 can be used in cooperation with an alarm. When the set pressure is exceeded, corresponding warning alarms are given.

[0028] The above-disclosed are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A pressure-relief exhaust device for a granulation silo of LFT-D modified material, comprising a silo (1), a feed end (2) and a pressure-relief exhaust mechanism (3); characterized in that: The slow-pressure exhaust mechanism (3) comprises an exhaust channel (31), a conical slow-pressure filter element (32) arranged in the exhaust channel (31), and a filtering system; the conical slow-pressure filter element (32) is used to block materials and perform a slow-pressure filtering function on the materials; the filtering system is arranged at the rear end of the slow-pressure filter element (32) and is used for filtering.

2. The LFT-D modified material granulation silo pressure relief exhaust device according to claim 1 is characterized by: The conical slow-pressure filter element (32) is a conical fabric and is arranged along the length direction of the exhaust passage (31).

3. The LFT-D modified material granulation silo pressure relief exhaust device according to claim 2 is characterized by: The tapered fabric is a pure woven fabric or a blended fabric.

4. The LFT-D modified material granulation silo pressure relief exhaust device according to claim 1 is characterized by: The filtration system comprises a primary filtration (33) and a secondary filtration (34).

5. The LFT-D modified material granulation silo pressure relief exhaust device according to claim 4 is characterized by: The primary filtration (33) is a filter screen, and the secondary filtration (34) is an activated carbon filtration.

6. A pressure-relief exhaust device for LFT-D modified material granulation silo according to any one of claims 1 to 5, characterized in that: The exhaust passage (31) is arranged vertically, and comprises a shell (311) and an internal frame (312), and both ends of the conical pressure-slowing filter element (32) are fixed on the internal frame (312).

7. A pressure-relief exhaust device for a LFT-D modified material granulation silo according to any one of claims 1 to 5, characterized in that: A pressure tester (5) is provided on the exhaust passage (31).

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