Polyethylene wax filtering device and method

Abstract

The invention relates to the technical field of polyethylene wax production, and discloses a polyethylene wax filtering device which comprises a filtering tank, a sealing cover is arranged at the top of the filtering tank, a feeding port is formed in one side of the filtering tank, a filtering plate located below the feeding port is arranged in the filtering tank, a discharging port is formed in the bottom of the filtering tank, and the sealing cover is arranged on the sealing cover. And an electric push rod is fixedly installed at the top of the sealing cover, a sealing piston is fixedly installed at the movable end of the bottom of the electric push rod, and the sealing piston and the interior of the filtering tank are arranged in a sliding mode. According to the polyethylene wax filtering device and method, the sealing piston is pushed downwards, so that the pressure intensity of air, located below the sealing piston, in the sealing tank is increased, then liquid polyethylene wax is pushed to be filtered through the filtering plate, the structure is simple, filtering can be conducted through the filtering plate through cooperation of air pressure and self gravity, impurities are effectively removed, and the practicability is high. Operation is convenient, and safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of polyethylene wax production, in particular to a polyethylene wax filtering device and method. Background Art

[0002] Polyethylene wax, also known as polymer wax or polyethylene wax for short, is widely used due to its excellent cold resistance, heat resistance, chemical resistance and wear resistance. In normal production, this part of wax can be directly added to polyolefin processing as an additive. It can increase the gloss and processing performance of the product. As a lubricant, it has stable chemical properties and good electrical properties. Polyethylene wax has good compatibility with polyethylene, polypropylene, polyvinyl acetate, ethylene propylene rubber and butyl rubber. It can improve the fluidity of polyethylene, polypropylene and ABS and the demoulding properties of polymethyl methacrylate and polycarbonate. Compared with PVC and other external lubricants, polyethylene wax has a stronger internal lubrication effect.

[0003] In the actual production process of polyethylene wax, the raw materials used are basically the products of crude processing of petroleum and coal chemical products. Some raw materials contain a large amount of impurities, and the impurities are not thoroughly precipitated and mixed into the product, resulting in substandard quality of the finished product.

[0004] To this end, we propose a polyethylene wax filtering device and method. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, the present invention provides the following technical solutions: a polyethylene wax filtering device, comprising a filter tank, a sealing cover is provided on the top of the filter tank, a feed port is provided on one side of the filter tank, a filter plate located below the feed port is provided inside the filter tank, a discharge port is provided at the bottom of the filter tank, an electric push rod is fixedly installed on the top of the sealing cover, a sealing piston is fixedly installed on the movable end of the bottom of the electric push rod, and the sealing piston is slidably arranged with the inside of the filter tank.

[0006] Preferably, a connection port is fixedly installed through the middle of the top of the sealing cover, a circular box is fixedly installed on one side of the top of the sealing cover, a connecting conduit is provided on the top of the connection port, the other end of the connecting conduit is fixedly installed on one side of the circular box, and a conducting tube is provided on the other side of the circular box.

[0007] Preferably, a connection cover is fixedly mounted on the top of the connection port, the top of the connection cover is fixedly mounted to one end of the connection conduit, and the diameter of the top of the connection cover is smaller than the diameter of the connection port.

[0008] Preferably, a transmission rod is rotatably connected to the middle part of the circular box, a fixed sleeve located inside the circular box is fixedly installed on the top of the transmission rod, a follower blade is integrally connected to the outer circumferential surface of the fixed sleeve, the middle part of the follower blade is arranged opposite to the other end of the connecting conduit, the middle part of the transmission rod is rotatably connected to the side of the filter tank, and a first bevel gear corresponding to the filter plate is fixedly installed on the transmission rod.

[0009] Preferably, a plurality of layers of filter plates are arranged inside the filter tank, and the filtering accuracy of the filter plates increases from top to bottom. A fixing frame is fixedly installed on the top of the filter plate, and a rotating shaft is rotatably connected to the middle part of the fixing frame. The bottom of the rotating shaft is rotatably connected to the middle part of the top of the filter plate, and a fixing seat is fixedly installed in the middle part of the rotating shaft. A scraper is fixedly installed on the outer peripheral surface of the fixing seat, and the bottom of the scraper is in sliding contact with the top of the filter net.

[0010] Preferably, the bottom of the fixed frame is rotatably connected to a rotating rod located on one side of the rotating shaft, one end of the rotating rod is rotatably connected to the side wall of the filter tank, a second bevel gear is fixedly installed on one end of the rotating rod, the second bevel gear is meshed with the first bevel gear, a third bevel gear is fixedly installed on the other end of the rotating rod, and a fourth bevel gear located above the fixed seat is fixedly installed on the rotating shaft, and the fourth bevel gear is meshed with the third bevel gear.

[0011] Preferably, a scraper is fixedly mounted on the outer peripheral surface of the fixing seat, and the bottom of the scraper is in sliding contact with the top of the filter screen.

[0012] Preferably, the movable rod of the electric push rod is slidably connected with the top of the sealing cover, the outer peripheral surface of the sealing piston is in sliding contact with the inner wall of the filter tank, and the bottom of the filter tank is provided with supporting legs.

[0013] Preferably, an air inlet pipe is fixedly installed at the bottom of the filter tank, the air inlet pipe is fixedly installed at the side of the filter tank, the top of the air inlet pipe is higher than the height of the feed port, and a one-way valve is arranged on the top of the air inlet pipe.

[0014] A polyethylene wax filtering method comprises the following steps: S1: adding liquid polyethylene wax into the filter tank through the feed port; S2: Start the electric push rod to push the sealing piston downward, so that the air pressure below the sealing piston inside the sealing tank increases, thereby pushing the liquid polyethylene wax through the filter plate; S3: When the sealing piston moves to the bottom, the electric push rod contracts, driving the sealing piston plate to move up, so that the air inlet pipe inflates the inside of the filter tank, and at the same time, the air passes through the filter plate to generate bubbles, stirring the liquid polyethylene wax; S4: When the sealing piston plate moves up, the air above the sealing piston is transported to the circular box through the connecting duct, pushing the follower blade and the transmission rod to rotate; S5: The rotating shaft and the scraper are then driven to rotate by the rotating rod, and the liquid polyethylene wax on the filter plate is stirred again by the scraper to increase the filtering efficiency. Beneficial Effects

[0015] Compared with the prior art, the present invention provides a polyethylene wax filtering device and method, which has the following beneficial effects: The polyethylene wax filtering device and method are provided with a sealing piston and a filter plate, liquid polyethylene wax is added into the filter tank through a feed port, an electric push rod is started, and the sealing piston is pushed downward, so that the air pressure below the sealing piston in the sealing tank is increased, thereby pushing the liquid polyethylene wax to be filtered through the filter plate. The device and method have a simple structure, can utilize air pressure in combination with its own gravity to filter through the filter plate, effectively remove impurities, are easy to operate, and have high safety.

[0016] The polyethylene wax filtering device and method are provided with an air inlet pipe. When the sealing piston moves to the bottom, the electric push rod contracts, driving the sealing piston plate to move up, so that the air inlet pipe is inflated into the filter tank through the opened one-way valve, and at the same time, air is passed through the filter plate to generate bubbles, stirring the liquid polyethylene wax, blowing up impurities on the filter plate, reducing the residual amount of impurities on the filter plate, and improving the filtering efficiency.

[0017] The polyethylene wax filtering device and method are characterized in that a circular box is arranged. When a sealing piston plate moves up, the air above the sealing piston is transported to the circular box through a connecting conduit, pushing the follower blade and the transmission rod to rotate, and then driving the rotating shaft and the scraper to rotate through the rotating rod. The liquid polyethylene wax on the filter plate is stirred again through the scraper, thereby reducing the residual amount of impurities on the filter plate and improving the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the filter tank of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of the sealing cover of the present invention; Figure 5 For the present invention Figure 4 The enlarged view of point B in the middle; Figure 6 It is a structural schematic diagram of the filter plate of the present invention; Figure 7For the present invention Figure 6 Enlarged view of point C in the middle; Figure 8 It is a schematic structural diagram of the fixing frame of the present invention.

[0019] In the figure: 1. filter tank; 2. sealing cover; 3. feed port; 4. discharge port; 5. filter plate; 6. support leg; 7. electric push rod; 8. sealing piston; 9. connection port; 10. connection cover; 11. connection guide tube; 12. round box; 13. transmission rod; 14. fixed sleeve; 15. follower blade; 16. first bevel gear; 17. fixed frame; 18. rotating shaft; 19. rotating rod; 20. second bevel gear; 21. third bevel gear; 22. fourth bevel gear; 23. fixed seat; 24. scraper; 25. intake pipe; 26. one-way valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 8 A polyethylene wax filtering device comprises a filter tank 1, a sealing cover 2 is arranged on the top of the filter tank 1, a feed port 3 is arranged on one side of the filter tank 1, a filter plate 5 located below the feed port 3 is arranged inside the filter tank 1, a discharge port 4 is arranged at the bottom of the filter tank 1, an electric push rod 7 is fixedly installed on the top of the sealing cover 2, a sealing piston 8 is fixedly installed on the movable end at the bottom of the electric push rod 7, and the sealing piston 8 is slidably arranged inside the filter tank 1. By setting the sealing piston 8 and the filter plate 5, liquid polyethylene wax is added to the filter tank 1 through the feed port 3, the electric push rod 7 is started, and the sealing piston 8 is pushed downward, so that the air pressure below the sealing piston 8 in the sealed tank is increased, and then the liquid polyethylene wax is pushed through the filter plate 5 for filtering. The structure is simple, and the air pressure can be combined with its own gravity to filter through the filter plate 5, so as to effectively remove impurities, and the operation is convenient and the safety is relatively high.

[0022] As an embodiment of the present invention, a connecting port 9 is fixedly installed through the middle of the top of the sealing cover 2, a circular box 12 is fixedly installed on one side of the top of the sealing cover 2, a connecting conduit 11 is arranged on the top of the connecting port 9, the other end of the connecting conduit 11 is fixedly installed on one side of the circular box 12, and a conducting tube is arranged on the other side of the circular box 12.

[0023] As an embodiment of the present invention, a connection cover 10 is fixedly installed on the top of the connection port 9 , and the top of the connection cover 10 is fixedly installed with one end of the connection conduit 11 . The diameter of the top of the connection cover 10 is smaller than the diameter of the connection port 9 .

[0024] As an embodiment of the present invention, a transmission rod 13 is rotatably connected to the middle part of the circular box 12, and a fixed sleeve 14 located inside the circular box 12 is fixedly installed on the top of the transmission rod 13. The outer peripheral surface of the fixed sleeve 14 is integrally connected with a follower blade 15. The middle part of the follower blade 15 is arranged opposite to the other end of the connecting conduit 11, the middle part of the transmission rod 13 is rotatably connected to the side of the filter tank 1, and the transmission rod 13 is fixedly installed with a first bevel gear 16 corresponding to the filter plate 5.

[0025] As an embodiment of the present invention, a plurality of layers of filter plates 5 are arranged inside the filter tank 1, and the filtering accuracy of the filter plates 5 increases from top to bottom. A fixing frame 17 is fixedly installed on the top of the filter plate 5, and a rotating shaft 18 is rotatably connected to the middle of the fixing frame 17. The bottom of the rotating shaft 18 is rotatably connected to the middle of the top of the filter plate 5, and a fixing seat 23 is fixedly installed in the middle of the rotating shaft 18. A scraper 24 is fixedly installed on the outer peripheral surface of the fixing seat 23, and the bottom of the scraper 24 is in sliding contact with the top of the filter net.

[0026] As an embodiment of the present invention, the bottom of the fixed frame 17 is rotatably connected to a rotating rod 19 located on one side of the rotating shaft 18, one end of the rotating rod 19 is rotatably connected to the side wall of the filter tank 1, and a second bevel gear 20 is fixedly installed on one end of the rotating rod 19, and the second bevel gear 20 is meshed with the first bevel gear 16. A third bevel gear 21 is fixedly installed on the other end of the rotating rod 19, and the rotating shaft 18 is fixedly installed with a fourth bevel gear 22 located above the fixed seat 23, and the fourth bevel gear 22 is meshed with the third bevel gear 21.

[0027] As an embodiment of the present invention, a scraper 24 is fixedly installed on the outer peripheral surface of the fixed seat 23, and the bottom of the scraper 24 is in sliding contact with the top of the filter screen. By setting the circular box 12, when the sealing piston 8 moves up, the air above the sealing piston 8 is transported to the circular box 12 through the connecting conduit 11, pushing the follower blade 15 and the transmission rod 13 to rotate, and then driving the rotating shaft 18 and the scraper 24 to rotate through the rotating rod 19, and the liquid polyethylene wax on the filter plate 5 is stirred again by the scraper 24, thereby reducing the residual amount of impurities on the filter plate 5 and improving the filtration efficiency.

[0028] As an embodiment of the present invention, the movable rod of the electric push rod 7 is slidably connected with the top of the sealing cover 2, the outer peripheral surface of the sealing piston 8 is in sliding contact with the inner wall of the filter tank 1, and a support leg 6 is provided at the bottom of the filter tank 1.

[0029] As an embodiment of the present invention, an air inlet pipe 25 is fixedly installed at the bottom of the filter tank 1, and the air inlet pipe 25 is fixedly installed on the side of the filter tank 1. The top of the air inlet pipe 25 is higher than the height of the feed port 3. A one-way valve 26 is arranged on the top of the air inlet pipe 25. By setting the air inlet pipe 25, when the sealing piston 8 moves to the bottom, the electric push rod 7 contracts, driving the sealing piston 8 to move up, so that the air inlet pipe 25 is inflated into the interior of the filter tank 1 through the opened one-way valve 26, and at the same time, the air passes through the filter plate 5 to generate bubbles, stir the liquid polyethylene wax, blow up the impurities on the filter plate 5, reduce the residual amount of impurities on the filter plate 5, and improve the filtration efficiency.

[0030] A polyethylene wax filtering method comprises the following steps: S1: adding liquid polyethylene wax into the filter tank 1 through the feed port 3; S2: Start the electric push rod 7 to push the sealing piston 8 downward, so that the air pressure inside the sealing tank below the sealing piston 8 increases, thereby pushing the liquid polyethylene wax through the filter plate 5; S3: When the sealing piston 8 moves to the bottom, the electric push rod 7 contracts, driving the sealing piston 8 to move up, so that the air inlet pipe 25 inflates the inside of the filter tank 1, and at the same time, the air passes through the filter plate 5 to generate bubbles, stirring the liquid polyethylene wax; S4: When the sealing piston 8 moves upward, the air above the sealing piston 8 is transported to the circular box 12 through the connecting conduit 11, pushing the follower blade 15 and the transmission rod 13 to rotate; S5: The rotating shaft 18 and the scraper 24 are then driven to rotate by the rotating rod 19, and the liquid polyethylene wax on the filter plate 5 is stirred again by the scraper 24 to increase the filtering efficiency.

[0031] It should be noted that, when in use, liquid polyethylene wax is added to the filter tank 1 through the feed port 3, the electric push rod 7 is started, and the sealing piston 8 is pushed downward, so that the air pressure below the sealing piston 8 inside the sealing tank increases, thereby pushing the liquid polyethylene wax through the filter plate 5 for filtration. The structure is simple, and the air pressure can be used in combination with its own gravity to filter through the filter plate 5. When the sealing piston 8 moves to the bottom, the electric push rod 7 contracts, driving the sealing piston 8 to move up, thereby allowing the air inlet pipe 25 to inflate the inside of the filter tank 1 through the opened one-way valve 26, and at the same time The air is made to pass through the filter plate 5 to generate bubbles, stir the liquid polyethylene wax, blow up the impurities on the filter plate 5, reduce the residual amount of impurities on the filter plate 5, and improve the filtering efficiency. When the sealing piston 8 moves up, the air above the sealing piston 8 is transported to the circular box 12 through the connecting conduit 11, pushing the follower blade 15 and the transmission rod 13 to rotate, and then driving the rotating shaft 18 and the scraper 24 to rotate through the rotating rod 19, and the liquid polyethylene wax on the filter plate 5 is stirred again by the scraper 24, reducing the residual amount of impurities on the filter plate 5 and improving the filtering efficiency.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A polyethylene wax filtering device, comprising a filtering tank (1), characterized in that: The top of the filter tank (1) is provided with a sealing cover (2), a side of the filter tank (1) is provided with a feed port (3), the interior of the filter tank (1) is provided with a filter plate (5) located below the feed port (3), the bottom of the filter tank (1) is provided with a discharge port (4), the top of the sealing cover (2) is fixedly mounted with an electric push rod (7), the movable end of the bottom of the electric push rod (7) is fixedly mounted with a sealing piston (8), and the sealing piston (8) is slidably arranged inside the filter tank (1).

2. A polyethylene wax filtering device according to claim 1, characterized in that: A connecting port (9) is fixedly installed through the middle of the top of the sealing cover (2), a circular box (12) is fixedly installed on one side of the top of the sealing cover (2), a connecting conduit (11) is provided on the top of the connecting port (9), the other end of the connecting conduit (11) is fixedly installed on one side of the circular box (12), and a conducting tube is provided on the other side of the circular box (12).

3. A polyethylene wax filtering device according to claim 2, characterized in that: A connection cover (10) is fixedly mounted on the top of the connection port (9), the top of the connection cover (10) is fixedly mounted to one end of a connection conduit (11), and the diameter of the top of the connection cover (10) is smaller than the diameter of the connection port (9).

4. A polyethylene wax filtering device according to claim 2, characterized in that: A transmission rod (13) is rotatably connected to the middle of the circular box (12); a fixed sleeve (14) located inside the circular box (12) is fixedly mounted on the top of the transmission rod (13); a follower blade (15) is integrally connected to the outer peripheral surface of the fixed sleeve (14); a middle portion of the follower blade (15) is arranged opposite to the other end of the connecting conduit (11); a middle portion of the transmission rod (13) is rotatably connected to the side of the filter tank (1); and a first bevel gear (16) corresponding to the filter plate (5) is fixedly mounted on the transmission rod (13).

5. A polyethylene wax filtering device according to claim 4, characterized in that: The filter tank (1) is provided with a plurality of filter plates (5) inside, the filter plates (5) having a filtering accuracy which increases from top to bottom, a fixing frame (17) being fixedly mounted on the top of the filter plate (5), a rotating shaft (18) being rotatably connected to the middle of the fixing frame (17), a bottom of the rotating shaft (18) being rotatably connected to the middle of the top of the filter plate (5), a fixing seat (23) being fixedly mounted on the middle of the rotating shaft (18), a scraper (24) being fixedly mounted on the outer peripheral surface of the fixing seat (23), and a bottom of the scraper (24) being in sliding contact with the top of the filter screen.

6. A polyethylene wax filtering device according to claim 5, characterized in that: A rotating rod (19) located on one side of the rotating shaft (18) is rotatably connected to the bottom of the fixing frame (17); one end of the rotating rod (19) penetrates through the side wall of the filter tank (1) and is rotatably connected; a second bevel gear (20) is fixedly mounted on one end of the rotating rod (19); the second bevel gear (20) meshes with the first bevel gear (16); a third bevel gear (21) is fixedly mounted on the other end of the rotating rod (19); a fourth bevel gear (22) located above the fixing seat (23) is fixedly mounted on the rotating shaft (18); the fourth bevel gear (22) meshes with the third bevel gear (21).

7. A polyethylene wax filtering device according to claim 6, characterized in that: A scraper (24) is fixedly mounted on the outer peripheral surface of the fixing seat (23), and the bottom of the scraper (24) is in sliding contact with the top of the filter screen.

8. A polyethylene wax filtering device according to claim 1, characterized in that: The movable rod of the electric push rod (7) is slidably connected to the top of the sealing cover (2), the outer peripheral surface of the sealing piston (8) is in sliding contact with the inner wall of the filter tank (1), and the bottom of the filter tank (1) is provided with a supporting leg (6).

9. A polyethylene wax filtering device according to claim 1, characterized in that: An air intake pipe (25) is fixedly mounted on the bottom of the filter tank (1), and the air intake pipe (25) is fixedly mounted on the side of the filter tank (1). The top of the air intake pipe (25) is higher than the height of the feed port (3), and a one-way valve (26) is provided on the top of the air intake pipe (25).

10. A polyethylene wax filtering method, characterized in that: The following steps are involved: S1: adding liquid polyethylene wax into the filter tank (1) through the feed port (3); S2: starting the electric push rod (7) to push the sealing piston (8) downward, thereby increasing the air pressure below the sealing piston (8) inside the sealing tank, thereby pushing the liquid polyethylene wax through the filter plate (5); S3: When the sealing piston (8) moves to the bottom, the electric push rod (7) contracts, driving the sealing piston (8) plate to move upward, thereby causing the air inlet pipe (25) to inflate the interior of the filter tank (1), and at the same time causing air to pass through the filter plate (5) to generate bubbles, thereby stirring the liquid polyethylene wax; S4: When the sealing piston (8) moves upward, the air above the sealing piston (8) is transported to the circular box (12) through the connecting conduit (11), pushing the follower blade (15) and the transmission rod (13) to rotate; S5: The rotating shaft (18) and the scraper (24) are then driven to rotate by the rotating rod (19), and the liquid polyethylene wax on the filter plate (5) is stirred again by the scraper (24), thereby increasing the filtering efficiency.

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