An environmentally friendly pressure relief powder collection device

Abstract

The present invention relates to an environmentally friendly pressure-relief powder collection device, comprising a powder processor, the inlet of the powder processor is connected to the outlet of a collection tank, the inlet of the collection tank is connected to the outlet of a feed pipe; an air discharge pipe is provided on the collection tank, one end of the air discharge pipe is connected to the internal cavity of the collection tank, and the other end is connected to an external environment whose air pressure is lower than the air pressure in the collection tank through a filter bag; a windshield material guide component is provided in the collection tank, and the windshield material guide component provides a guide channel for the powder to automatically fall to the outlet at the bottom of the collection tank under the action of gravity. The present invention replaces the existing air shut-off fan, solves the technical problems of high failure rate, powder pollution and low production efficiency, does not use rotating machinery, has high unloading efficiency, low failure rate, high reliability, good environmental performance, and is suitable for application in various powder unloading sites.

Description

Technical Field

[0001] The invention relates to the technical field of powder discharging devices, in particular to an environmentally friendly pressure-relieving powder collecting device. Background Art

[0002] The existing powder conveying pipeline is connected to the powder processing equipment through a fan, which blocks the airflow in the conveying pipeline and conveys the powder to the feeding port of the powder processing equipment through a scraper. The fan is used to be installed at the discharge port of the discharger working under negative pressure. The upper part receives the material discharged by the discharger, and conveys the material by means of a rotating impeller scraper. It also plays a sealing role to prevent air from being sucked in from the discharge port during pneumatic conveying, thereby ensuring the normal discharge of the discharger.

[0003] The current air shut-off fans have many defects: 1. The failure rate is high, and the powder will clog the scraper roller, causing the motor to burn out; 2. The motor seal oil leaks and contaminates the powder; 3. The friction between the scraper and its components produces metal powder, which contaminates the powder; 4. The production efficiency is not high, and the scraper cannot rotate too fast. If the speed is too fast, the heat generated will cause the powder to stick together. Summary of the invention

[0004] The invention provides an environmentally friendly pressure relief powder collecting device, which replaces the existing air shut-off fan and solves the technical problems of high failure rate, powder pollution and low production efficiency in the prior art.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An environmentally friendly pressure-relief powder collection device comprises a powder processor, the inlet of the powder processor is connected to the outlet of a collection tank, the inlet of the collection tank is connected to the outlet of a feed pipe; an air leakage pipe is provided on the collection tank, one end of the air leakage pipe is connected to the internal cavity of the collection tank, and the other end is connected to the external environment through a filter bag; a windshield material guiding component is provided in the collection tank, and the windshield material guiding component provides a guide channel for the powder to automatically fall to the bottom outlet of the collection tank under the action of gravity.

[0007] Preferably, the wind-shielding material guiding component adopts a spiral plate, and the spiral plate extends from top to bottom in a spiral shape to form a spiral flow channel for the powder material to fall in a spiral shape.

[0008] Preferably, the air discharge pipe is bent, comprising a vertical section connected to the collection tank and a horizontal section extending horizontally outward from the vertical section, and the inner wall of the horizontal section is provided with a rewinding air guide plate to prevent powder from blowing toward the filter bag.

[0009] Preferably, the rewinding air guide plate is streamlined, and its structure includes an inclined section and a barb structure extending from the end of the inclined section and bending in the opposite direction to the airflow direction in the tube.

[0010] Preferably, a filter plate is provided inside the filter bag in the horizontal section of the air leakage duct, and the filter plate is detachably installed in the air leakage duct.

[0011] Preferably, the mesh number of the filter plate is smaller than the mesh number of the filter bag.

[0012] Preferably, the filter bag is detachably connected to the end of the air discharge duct.

[0013] Preferably, the air discharge pipe is located on the cover plate on the top of the collecting tank, and a plurality of air discharge pipes are evenly spaced around the discharge port of the feed pipe.

[0014] Preferably, the cover plate is detachably connected to the collection tank.

[0015] Preferably, the bottom of the collecting tank is connected to the feed port of the powder processor via a funnel section with a reduced diameter, and a valve is provided at the outlet of the funnel section.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention replaces the fan shut-off fan, avoids motor failure and powder pollution, improves the reliability of the device, reduces the pollution of leaking air, and improves production efficiency.

[0018] The present invention uses a fixedly installed wind-shielding spiral plate to drain and guide the powder. The spiral flow channel is arranged to prevent the powder from directly falling and causing dust. At the same time, the spiral plate itself has a wind-shielding effect, further preventing the powder from being blown up.

[0019] Compared with the fan shut-off device used in the prior art, the present invention avoids the use of rotating machinery such as rollers, has a low failure rate, avoids heat generated by rotating friction that causes powder adhesion, has high reliability, and saves electricity and costs. In addition, no metal powder is generated during the operation, avoiding powder pollution. The unloading speed of the present invention is not limited by the speed of the scraper, and the unloading efficiency is greatly improved.

[0020] The present invention provides a detachable filter plate in the air discharge duct and a detachable filter screen at the outer end of the air discharge duct to grade and filter the powder, thereby preventing the powder from being carried by the exhaust air from the air discharge duct and improving the environmental protection performance. The detachable installation is convenient for disassembly and replacement.

[0021] The rewinding air guide plate arranged in the air discharge duct of the present invention is provided with an inclined section and a barb structure according to the flow field characteristics in the duct, which is beneficial to the powder reflow and further improves the environmental protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is an exploded view of the present invention.

[0024] Figure 3 It is a cross-sectional view of the horizontal section structure of the air discharge duct of the present invention.

[0025] In the figure: 1, feed pipe; 2, collection tank; 21, funnel section; 3, powder processor; 4, air discharge duct; 5, filter bag; 6, spiral plate; 7, cover plate; 8, filter plate; 9, rewinding air guide plate; 91, barb structure; 92, inclined section. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is described below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the environmentally friendly pressure relief powder collection device of this embodiment includes a powder processor 3, the inlet of the powder processor 3 is connected to the outlet of the collection tank 2, and the inlet of the collection tank 2 is connected to the outlet of the feed pipe 1;

[0028] The collecting tank 2 is provided with an air leakage pipe 4 , one end of which is connected to the internal cavity of the collecting tank 2 , and the other end of which is connected to the external environment through the filter bag 5 .

[0029] A windshield material guiding component is provided in the collecting tank 2. The function of the windshield material guiding component is to provide a guide channel for the powder entering from the feeding pipe 1 to automatically fall to the bottom outlet of the collecting tank 2 under the action of gravity, so as to prevent the powder from leaking out of the pressure relief pipe 4 along with the gas due to excessive wind force when falling.

[0030] As an embodiment, the windshield material guide component adopts Figure 2 The spiral plate 6 shown in the figure extends spirally from top to bottom to form a spiral flow channel for the powder to fall spirally.

[0031] Specifically, the top end of the spiral plate 6 corresponds to the center position of the outlet of the feed pipe 1 .

[0032] As an implementation method, Figure 3 As shown, the air discharge pipe 4 is bent, including a vertical section connected to the collection tank 2 and a horizontal section extending horizontally outward from the vertical section. The inner wall of the horizontal section is provided with a rewinding air guide plate 9 to prevent powder from blowing toward the filter bag 5.

[0033] The rewinding air guide plate 9 is streamlined, and its structure includes an inclined section 92 and a barb structure 91 extending from the end of the inclined section 92 and bending in the opposite direction to the flow direction of the airflow in the pipe.

[0034] As an implementation manner, a filter plate 8 is provided inside the filter bag 5 in the horizontal section of the air discharge pipe 4 .

[0035] Specifically, the mesh number of the filter plate 8 is smaller than the mesh number of the filter bag 5 .

[0036] The powder can be graded and filtered according to different mesh sizes to improve the filtering effect.

[0037] As an implementation mode, the mesh number of the filter plate 7 is designed to be about 20, and the mesh number of the filter bag 5 is designed to be about 300 according to parameters such as powder and device size.

[0038] As an implementation mode, the filter plate 8 is detachably installed in the air discharge pipe 4 .

[0039] Specifically, it can be placed in the air discharge duct 4 in a pull-out manner, so as to be easy to disassemble and replace.

[0040] As an implementation manner, the filter bag 5 is detachably connected to the end of the air discharge pipe 4 .

[0041] Specifically, the filter bag 5 is sleeved on the opening of the air discharge duct 4 to facilitate disassembly and replacement.

[0042] As an implementation mode, the air discharge pipe 4 is located on the cover plate 7 on the top of the collection tank 2, and a plurality of air discharge pipes 4 are evenly spaced around the discharge port of the feed pipe 1.

[0043] As an implementation mode, the cover plate 7 is detachably connected to the collection tank 2 by bolts.

[0044] As an embodiment, the bottom of the collecting tank 2 is connected to the feed port of the powder processor 3 via a funnel section 21 with a reduced diameter.

[0045] As an implementation manner, a valve is provided at the outlet of the funnel section 21 .

[0046] Specifically, the valve may be a flow control butterfly valve.

[0047] The workflow of the present invention is as follows:

[0048] The powder enters the collecting tank 2 through the feed pipe 1. As the volume of the collecting tank 2 suddenly increases, the powder pressure decreases, and the space inside the collecting tank 2 is filled, the air inside the collecting tank 2 is squeezed, and the pressure inside the tank is greater than the external environmental pressure. Therefore, the air flow is discharged through the air discharge pipe 4, and the powder remains in the wind shielding spiral plate 6 and spirally flows to the bottom of the collecting tank 2. The powder discharge flow is controlled by a butterfly valve.

[0049] The outer end of the air discharge pipe 4 is provided with a filter plate 7, and the filter bag 5 is provided outside the filter plate 7 to filter the powder step by step, and the powder is refluxed through the rewinding air guide plate 9 and retained in the collection tank to prevent the powder from leaking out. Figure 3 As shown by the solid line and its arrow, the gas flow direction in the air discharge pipe 4 is as follows: Figure 3 Indicated by the dashed line and arrow.

[0050] The environmentally friendly pressure relief powder collection device of this embodiment does not use rotating machinery, has high unloading efficiency, low failure rate, high reliability, good environmental performance, and is suitable for use in various powder unloading sites.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the invention.

Claims

1. An environmentally friendly pressure relief powder collection device, comprising a powder processor (3), characterized in that: The inlet of the powder processor (3) is connected to the outlet of the collection tank (2), and the inlet of the collection tank (2) is connected to the outlet of the feed pipe (1); the collection tank (2) is provided with an air discharge pipe (4), one end of which is connected to the internal cavity of the collection tank (2), and the other end of which is connected to the external environment through a filter bag (5); a windshield material guide component is provided in the collection tank (2), and the windshield material guide component provides a guide channel for the powder to automatically fall to the bottom outlet of the collection tank (2) under the action of gravity; The wind-shielding material guiding component adopts a spiral plate (6), and the spiral plate (6) extends from top to bottom in a spiral shape to form a spiral flow channel for the powder to fall in a spiral shape; The air discharge pipe (4) is in a bent shape, comprising a vertical section connected to the collection tank (2) and a horizontal section extending horizontally outward from the vertical section, and the inner wall of the horizontal section is provided with a rewinding air guide plate (9) for preventing powder from blowing toward the filter bag (5).

2. The environmentally friendly pressure relief powder collection device according to claim 1, characterized in that: The rewinding air guide plate (9) is streamlined, and its structure comprises an inclined section (92) and a barb structure (91) extending from the end of the inclined section (92) and bending in the opposite direction to the flow direction of the airflow in the tube.

3. The environmentally friendly pressure relief powder collection device according to claim 1, characterized in that: A filter plate (8) is provided inside the filter bag (5) in the horizontal section of the air leakage pipe (4), and the filter plate (8) is detachably mounted inside the air leakage pipe (4).

4. The environmentally friendly pressure relief powder collection device according to claim 3, characterized in that: The mesh number of the filter plate (8) is smaller than the mesh number of the filter bag (5).

5. The environmentally friendly pressure relief powder collection device according to claim 1, characterized in that: The filter bag (5) is detachably connected to the end of the air discharge pipe (4).

6. The environmentally friendly pressure relief powder collection device according to claim 1, characterized in that: The air discharge pipe (4) is located on the cover plate (7) at the top of the collection tank (2), and a plurality of air discharge pipes (4) are evenly spaced around the discharge port of the feed pipe (1).

7. The environmentally friendly pressure relief powder collection device according to claim 6, characterized in that: The cover plate (7) is detachably connected to the collection tank (2).

8. The environmentally friendly pressure relief powder collection device according to claim 1, characterized in that: The bottom of the collection tank (2) is connected to the feed port of the powder processor (3) via a funnel section (21) with a reduced diameter, and a valve is provided at the outlet of the funnel section (21).

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