Paper tape filtering device

Abstract

The invention discloses a paper tape filtering device. The paper tape filtering device comprises a main body frame, a rotary drum rotationally arranged in the main body frame, and a U-shaped conveying mechanism matched with the rotary drum, a paper feeding channel allowing the paper tape to move is formed between the rotary drum and the U-shaped conveying mechanism, and a liquid filtering area is arranged on the inner side of the U-shaped conveying mechanism; the paper tape is used for filtering cuttings in the filtering area and conveying the cuttings; a plurality of scraping plates are uniformly arranged in the circumferential direction of the rotary drum, filter cakes adhered to the paper tape are scraped off through the scraping plates, and the filter cakes are scraped to the first end part of the U-shaped conveying mechanism to be discharged along with the rotation of the rotary drum. According to the paper tape filtering device, all filter cakes on the filtering paper tape can be discharged, and the chain net can be automatically tensioned.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, and in particular to a paper tape filtering device used for matching numerically controlled machine tools. Background Art

[0002] During the machining process, it is usually necessary to filter the cutting fluid to meet actual production needs. The traditional paper tape filter device uses a drum-type paper tape filter. The filter cavity is mainly formed by a drum and a chain net. The filter paper is automatically conveyed through a drum and a continuously moving chain net to achieve the filtering function. However, in the drum-type paper tape filter device in the prior art, when the filter paper moves upward, the filter cake on the filter paper may fall off the filter paper tape and fall back into the liquid weight, resulting in poor filtering effect. Since the gravity of the filtrate and the filter cake always acts on the chain net, the chain net is an elastic metal device. As the filter cake thickens, the filtrate liquid level rises, the weight of the liquid in the cavity increases, and the gap between the chain net and the drum increases. Therefore, it is necessary to manually tighten the chain net regularly to avoid filtration failure. Summary of the invention

[0003] Based on this, it is necessary to provide a paper belt filtering device to address the problem in the prior art that the filter cake cannot be effectively removed and the chain net needs to be manually tensioned regularly. The paper belt filtering device can discharge all the filter cake on the filter paper belt and can automatically tension the chain net.

[0004] A paper tape filtering device comprises a main frame, a rotating drum rotatably arranged in the main frame, and a U-shaped conveying mechanism matched with the rotating drum; a paper passage for the paper tape to move is formed between the rotating drum and the U-shaped conveying mechanism, and the inner side of the U-shaped conveying mechanism is a filtering area for liquid; the paper tape is used to filter the chips in the filtering area and convey the chips; a plurality of scrapers are evenly arranged around the circumference of the rotating drum, and the filter cake adhered to the paper tape is scraped off by the scrapers and scraped to the first end of the U-shaped conveying mechanism for discharge as the rotating drum rotates.

[0005] Furthermore, a swinging scraper matched with the scraper is also arranged in the filter body, and the swinging scraper scrapes off and discharges the debris on the scraper that moves to the first end.

[0006] Furthermore, the swing scraper includes a connecting rod, a connecting plate and an elastic lip fixed in the main frame, and the connecting rod and the elastic lip are connected by the connecting plate.

[0007] Furthermore, the U-shaped conveying mechanism includes a transmission shaft and a tensioning shaft respectively arranged in the upper space of the main frame, two guide shafts arranged in the lower space of the main frame, and a chain network surrounding each shaft, and the rotating drum is arranged between the transmission shaft and the tensioning shaft, so that the chain network presents a U-shaped structure.

[0008] Furthermore, the U-shaped conveying mechanism also includes a gas spring cooperating with the tensioning shaft, and the gas spring lifts the tensioning shaft to tension the chain network.

[0009] Furthermore, both ends of each of the guide shafts and the transmission shaft are provided with sprockets, and the sprockets are meshed with the chain net.

[0010] Furthermore, a paper feed port is arranged on a side wall of the main frame close to the tensioning shaft.

[0011] Furthermore, a paper shortage detection sensor is arranged on one side of the paper inlet.

[0012] Furthermore, a waste paper box is arranged outside the main frame, and the waste paper box is directly below the first end of the U-shaped conveying mechanism.

[0013] Furthermore, a liquid level detection sensor is also arranged in the filter area.

[0014] The present invention provides a paper tape filtering device, which is provided with a plurality of scrapers on a rotary drum. When the rotary drum rotates, the scrapers can scrape the filter cake on the paper tape to the first end of the U-shaped conveying mechanism for discharge, thereby preventing the filter cake on the paper tape from falling back into the filtering area under the action of gravity during the ascending process; in addition, a swinging scraper cooperating with the scraper is provided at the first end of the present invention, and the swinging scraper is a flexible structure. When the scraper on the rotary drum moves to the swinging scraper, the free end of the swinging scraper contacts the free end of the scraper. As the rotary drum rotates, the movement trajectory of the swinging scraper will change, that is, the elastic lip of the swinging scraper will move along the scraper from the free end of the scraper to the fixed end of the scraper, thereby scraping off all the debris adhered to the scraper, ensuring thorough chip removal. Furthermore, the present invention is provided with a tensioning shaft and a gas spring cooperating with the tensioning shaft, and the tensioning shaft is lifted by the gas spring, thereby automatically tensioning the chain net, without the need for manual tensioning on a regular basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional view of a paper tape filter device of the present invention;

[0016] Figure 2 A schematic diagram of a drum of a paper tape filter device according to the present invention;

[0017] Figure 3 A schematic diagram of a swing scraper of a paper tape filtering device of the present invention;

[0018] Figure 4 The figure is a schematic diagram of the overall structure of a paper tape filtering device of the present invention.

[0019] Reference numerals

[0020] 1 main frame, 2 rotating drum, 3 U-type conveying mechanism, 5 driving mechanism, 6 paper belt, 7 paper feeding channel, 8 filtering area, 11 swinging scraper, 12 paper inlet, 13 waste paper box, 14 liquid inlet, 21 scraper, 22 cross bar, 23 disc, 32 transmission shaft, 32 tensioning shaft, 33 guide shaft, 34 chain net, 35 gas spring, 36 first end, 81, liquid level detection sensor, 111 connecting rod, 112 connecting plate, 113 elastic lip, 121 paper shortage detection sensor. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0022] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] The present invention provides a paper tape filtering device, which comprises a main frame, a rotating drum rotatably arranged in the main frame, a U-shaped conveying mechanism matched with the rotating drum, and a driving mechanism driving the U-shaped conveying mechanism to operate; a paper passage for the movement of the paper tape is formed between the rotating drum and the U-shaped conveying mechanism, and the inner side of the U-shaped conveying mechanism is a filtering area for liquid; the paper tape is used to filter the chips in the filtering area and convey the chips; a plurality of scrapers are evenly arranged around the circumference of the rotating drum, and the filter cake adhered to the paper tape is scraped off by the scrapers and is scraped to the first end of the U-shaped conveying mechanism for discharge as the rotating drum rotates.

[0025] The present invention provides a paper tape filtering device, which has a plurality of scrapers arranged on a rotating drum. When the rotating drum rotates, the scrapers can scrape the filter cake on the paper tape to the first end of a U-shaped conveying mechanism for discharge, thereby preventing the filter cake on the paper tape from falling back into the filtering area under the action of gravity during the rising process.

[0026] The paper tape filter device is described below in conjunction with specific embodiments to further understand the inventive concept of the paper tape filter device.

[0027] In one embodiment, if Figure 1-4 As shown, a paper tape filtering device comprises a main frame 1, a drum 2 rotatably arranged in the main frame 1, a U-shaped conveying mechanism 3 cooperating with the drum 2, and a driving mechanism 5 driving the U-shaped conveying mechanism 3 to operate; the U-shaped conveying mechanism 3 is located below the drum 2; the inner side of the U-shaped conveying mechanism 3 is a filtering area 8; the paper tape 6 is used to filter the chips in the filtering area 8 and convey the chips; a plurality of scrapers 21 are evenly arranged around the circumference of the drum 2, and the filter cake adhered to the paper tape is scraped off by the scrapers 21 and is scraped to the first end 36 of the U-shaped conveying mechanism 3 for discharge as the drum 2 rotates; the main frame 1 is also provided with a liquid inlet 14. Specifically, as Figure 2 As shown, the drum 2 is a frame structure, formed by connecting two discs 23 with at least four cross bars 22, wherein a rotating shaft is provided through the middle of the disc 23, and the two ends of the rotating shaft are connected to the two opposite side walls of the main frame, and the scrapers 21 are respectively provided on the cross bars 22, and the scrapers 21 are divided into a rigid part and an elastic lip, wherein the rigid part is connected to the cross bars 22, and the elastic lip is provided on the rigid part. When the U-shaped conveying mechanism 3 is in operation, the paper belt 6 on it will be driven to move forward, and the drum 2 will also rotate with it. When the drum 2 rotates, the scraper 21 on it rotates to the paper belt 6, and the filter cake on the paper belt 6 will be scraped up, thereby preventing the filter cake on the paper belt 6 from falling back into the liquid due to the action of gravity when the paper belt 6 moves to the ascending section.

[0028] In another embodiment, if Figure 1 As shown, the filter body 1 is further provided with a swing scraper 11 cooperating with the scraper 21, and the swing scraper 11 picks up and discharges the debris on the scraper 21 moving to the first end 36. The swing scraper 11 is a flexible structure, specifically, as Figure 3 The swing scraper 11 shown in the figure includes a connecting rod 111, a connecting plate 112 and an elastic lip 113 fixed in the main frame 1, and the connecting rod 111 and the elastic lip 113 are connected by the connecting plate 112. Figure 1As shown, when the scraper 21 moves to the first end 36, the elastic lip 113 of the swinging scraper 11 first contacts the free end of the scraper 21. As the scraper 21 continues to move forward, a force is exerted on the swinging scraper 11, causing the movement trajectory of the swinging scraper 11 to change, that is, the elastic lip 113 will continue to move forward along the surface of the scraper 21, scraping off all the debris adhered to the scraper 21 until the scraper 21 leaves the swinging scraper 11, and the scraped debris will be discharged from the first end 36.

[0029] In the present invention, a scraper 21 is arranged on the drum 2, and the scraper 21 can prevent the filter cake on the paper belt 6 from falling back into the liquid due to gravity when the paper belt 6 moves upward, and a swinging scraper 11 cooperating with the scraper 21 is also arranged at the first end 36, and the swinging scraper 11 can scrape off and discharge the debris adhered to the scraper 21, and prevent the debris adhered to the scraper 21 from re-entering the liquid. Therefore, the present invention can remove all the chips in the liquid through the cooperation between the scraper 21 and the swinging scraper 11, thereby improving the filtration efficiency of the liquid.

[0030] In another embodiment, if Figure 1 As shown, the U-shaped conveying mechanism 3 includes a transmission shaft 31 and a tensioning shaft 32 respectively arranged in the upper space of the main frame 1, two guide shafts 33 arranged in the lower space of the main frame 1, and a chain net 34 surrounding each shaft, and the rotating drum 2 is arranged between the transmission shaft 31 and the tensioning shaft 32, so that the chain net 24 presents a U-shaped structure. The transmission shaft 31 is connected to the driving mechanism 5, and the driving mechanism 5 drives the transmission shaft 31 to rotate. Both ends of each of the guide shafts 33 and the transmission shaft 31 are provided with sprockets, and the sprockets are meshed with the chain net 34. The driving mechanism 5 is started, and the driving mechanism 5 drives the transmission shaft 31 to rotate, and the rotating shaft drives the chain net 34 to rotate, so that the chain net 34 drives the paper belt and the rotating drum 2 thereon to rotate and remove chips.

[0031] In another embodiment, if Figure 4 As shown, the U-shaped conveying mechanism 3 further includes a gas spring 35 matched with the tensioning shaft 32, and the gas spring 35 lifts the tensioning shaft 32 to tension the chain net 34. The gas spring 35 is used to realize automatic tensioning of the chain net 34.

[0032] In another embodiment, if Figure 4 As shown, a paper feed port 12 is disposed on a side wall of the main frame 1 close to the tensioning shaft 32 , and a paper shortage detection sensor 121 is disposed on one side of the paper feed port 12 , and the paper shortage detection sensor 121 is used to detect whether there is paper on the paper roller.

[0033] In another embodiment, if Figure 1As shown, a waste paper box 13 is disposed outside the main frame 1 . The waste paper box 13 is directly below the first end 36 of the U-shaped conveying mechanism 3 . The waste paper box 13 is used to recycle waste paper box cuttings.

[0034] In another embodiment, if Figure 1 As shown, a liquid level detection sensor 81 is further provided in the filter area 8 , and the liquid level in the filter area 8 is detected by the liquid level detection sensor 81 .

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A paper tape filter device, characterized in that: The paper tape filtering device comprises a main frame (1), a rotating drum (2) rotatably arranged in the main frame (1), and a U-shaped conveying mechanism (3) cooperating with the rotating drum (2); a paper feeding channel (7) for the movement of the paper tape (6) is formed between the rotating drum (2) and the U-shaped conveying mechanism (3), and the inner side of the U-shaped conveying mechanism (3) is a filtering area (8); the paper tape (6) is used to filter the chips in the filtering area (8) and convey the chips; a plurality of scrapers (21) are evenly arranged around the circumference of the rotating drum (2), and the filter cake adhering to the paper tape is scraped off by the scrapers (21), and as the rotating drum (2) rotates, the filter cake is scraped to the first end (36) of the U-shaped conveying mechanism (3) for discharge.

2. A paper tape filter device according to claim 1, characterized in that: The filter body (1) is also provided with a swinging scraper (11) cooperating with the scraper (21), and the swinging scraper (11) scrapes off and discharges debris on the scraper (21) that moves to the first end (36).

3. A paper tape filter device according to claim 2, characterized in that: The swing scraper (11) comprises a connecting rod (111), a connecting plate (112) and an elastic lip (113) fixed in the main frame (1), and the connecting rod (111) and the elastic lip (113) are connected via the connecting plate (112).

4. A paper tape filter device according to claim 1, characterized in that: The U-shaped conveying mechanism (3) comprises a transmission shaft (31) and a tensioning shaft (32) respectively arranged in the upper space of the main frame (1), two guide shafts (33) arranged in the lower space of the main frame (1), and a chain network (34) surrounding each shaft, and the rotating drum (2) is arranged between the transmission shaft (31) and the tensioning shaft (32), so that the chain network (24) presents a U-shaped structure.

5. A paper tape filter device according to claim 4, characterized in that: The U-shaped conveying mechanism (3) further comprises a gas spring (35) cooperating with the tensioning shaft (32), and the gas spring (35) lifts the tensioning shaft (32) to tension the chain net (34).

6. A paper tape filter device according to claim 4, characterized in that: Both ends of each of the guide shafts (33) and the transmission shaft (31) are provided with sprockets, and the sprockets are meshed with the chain net (34).

7. A paper tape filter device according to claim 4, characterized in that: A paper feed port (12) is provided on a side wall of the main frame (1) close to the tensioning shaft (32).

8. A paper tape filter device according to claim 6, characterized in that: A paper shortage detection sensor (121) is provided on one side of the paper inlet (12).

9. A paper tape filter device according to claim 1, characterized in that: A waste paper box (13) is arranged on the outside of the main frame (1), and the waste paper box (13) is directly below the first end (36) of the U-shaped conveying mechanism (3).

10. The paper tape filter device according to claim 1, characterized in that: A liquid level detection sensor (81) is also provided in the filtering area (8).

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