Consumable-free water-based grinding oil high-precision filter element

Abstract

The utility model provides a consumable-free water-based grinding oil high-precision filter element, and relates to a filter element structure, the consumable-free water-based grinding oil high-precision filter element comprises a filter element framework and filter paper sleeved outside the filter element framework, and the filter paper is a paper lamination formed by laminating double-sided rough carbon fiber paper; the filter element framework comprises a front blocking piece, a rear blocking piece, a supporting part and an elastic connecting part, the supporting part is sleeved with the filter paper, the filter paper is pressed and limited between the front blocking piece and the rear blocking piece, and the front blocking piece is fixedly connected into the filter barrel and connected with the rear blocking piece through the supporting part and the elastic connecting part. And the elastic connecting part is arranged in the supporting part, extends out of the end part of the supporting part, is connected with the rear blocking piece and is used for elastically adjusting the distance between the front blocking piece and the rear blocking piece. The double-sided rough carbon fiber paper is adopted as the material of the filter element, so that the problem that the paper filter element is dissolved in water or water-based grinding oil can be well solved; high-precision and consumable-free filtration of the water-based grinding oil is realized, and the water-based grinding oil filtering device has the advantages of higher cost and convenience.

Description

Technical Field

[0001] The utility model relates to a filter element structure, in particular to a high-precision filter element for filtering water-based grinding oil without consumables. Background Art

[0002] Element filtration is a common filtration method with the advantages of high precision, high filtration efficiency, backwashing, and no consumables. It is often used for filtering oily grinding oils. Because the materials used in general filter elements are wood fibers or cotton fibers, this type of filter element will dissolve and rot when it encounters water or water-based grinding oil, so it cannot be filtered repeatedly.

[0003] Therefore, for the filtration of water-based grinding oil, the common filter materials on the market include sintered mesh filter elements, but their precision is not high enough; some filter elements are disposable filter elements and are consumables. So far, there is no better way to deal with the high precision rate of water-based grinding oil. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a high-precision filter element for water-based grinding oil without consumables. Specifically, double-sided rough carbon fiber paper is used as the material of the filter element, and a filter element frame with a simple structure is used to form the filter element of the utility model. Among them, the filter element of the new material can well solve the problem of dissolution of the paper filter element in water or water-based grinding oil, and can achieve high-precision and consumable-free filtration of water-based grinding oil, making up for the vacancy of conventional filter elements in water-based grinding oil filtration. At the same time, compared with other water-based grinding oil filtration methods, it also has more cost and convenience advantages.

[0005] The utility model provides the following technical solutions:

[0006] A high-precision filter element for water-based grinding oil without consumables, comprising a filter element frame and filter paper sleeved outside the filter element frame, wherein the filter paper is a paper laminate composed of double-sided rough carbon fiber paper stacked and superimposed;

[0007] The filter element skeleton comprises a front baffle, a rear baffle, a support part and an elastic connection part, the stacked double-sided rough carbon fiber paper sleeve is arranged outside the support part and is compressed and limited between the front baffle and the rear baffle, the front baffle is fixedly connected in the filter barrel, and is connected to the elastic connection part and the rear baffle through the support part, the elastic connection part is placed in the support part and the end extending out of the support part is connected to the rear baffle, and is used to elastically adjust the distance between the front baffle and the rear baffle to control the degree of compression of the paper stack;

[0008] That is, under normal filtering conditions, the elastic force of the elastic connection part can realize the compression of the filter paper between the front baffle and the rear baffle, and when the pressure in the filter barrel is relatively high, the rear baffle can be further forced to press the elastic connection part toward the support part, so that the distance between the front baffle and the rear baffle is reduced, the paper stack is further compressed, and the surface texture of the double-sided rough carbon fiber paper forms a filtering channel, and high-precision filtering can be completed under the action of external pressure;

[0009] During the backflushing process, the pressure of the support part connected to the outside world is relatively high, and the liquid enters the center of the support part from the outside and flows out into the filter barrel. The rear baffle is subjected to downward pressure, the distance between the front and rear baffles increases, and the gap between the filter papers also increases accordingly, which can better complete the backflushing filter residue operation.

[0010] Preferably, the support portion includes a crescent bar, a support ring and a fixing bolt, wherein the crescent bar is a long strip skeleton with an arc-shaped cross section, and multiple groups of coaxially oppositely arranged crescent bars are spaced to form a support member for supporting the external paper laminate, and the middle is fixedly connected by multiple groups of support rings, and the top is connected to one end of the fixing bolt, and the fixing bolt is inserted and positioned at the center of the front baffle, and the interior is a hollow through structure;

[0011] At this point, the dirty liquid can enter the internal cavity formed by the crescent strip through the filter paper, and flow out of the filter barrel through the hollow through-structure of the fixing bolts under pressure. The structure is relatively simple, so the cost is also low, and it is convenient to install and replace the liquid.

[0012] Preferably, the elastic connection part comprises a spring, a retaining ring 1, a retaining ring 2, a connecting ring and a crescent guide bar. The crescent guide bar is provided with two groups and is relatively arranged between the crescent bars and coaxially arranged with the crescent bars. One end of the crescent guide bar is connected to the retaining ring 1, and the other end is connected to the rear baffle through the connecting ring. The two ends of the spring abut between the retaining ring 1 and the retaining ring 2, and the retaining ring 2 is fixed to the bottom end of the crescent bar.

[0013] That is, during the backflushing process, liquid enters the center of the support part from the outside, and the rear baffle is subjected to downward pressure, then the crescent guide bar can be pulled through the connecting ring to move outward along the crescent guide bar, so that the distance between the front and rear baffles increases. At this time, the retaining ring also descends with the crescent guide bar, which can force the top of the compression spring to be compressed and descend. During the normal filtration process, when the pressure in the filter barrel is relatively high, the rear baffle will press the elastic connecting part toward the inside of the support part, and the crescent guide bar can be driven by the connecting ring to move along the crescent bar, forcing the filter paper that has been compressed to be further compressed, thereby improving the filtration effect.

[0014] Preferably, two groups of crescent bars are provided and are coaxially arranged opposite to each other to achieve a better supporting effect.

[0015] Preferably, the crescent guide bars are provided in two groups, and are relatively arranged between the crescent bars and coaxially arranged with the crescent bars to achieve better auxiliary support and motion guiding effects.

[0016] The beneficial effects of the utility model are:

[0017] 1. The interior of the filter element of the utility model is a specially designed filter element skeleton with a spring;

[0018] 2. Under normal filtering conditions, the pressure inside the filter barrel and the filter element skeleton with built-in springs compress the oil-resistant double-sided rough carbon fiber paper layers, and the special surface texture forms a filtering channel, completing high-precision filtering under the action of external pressure;

[0019] 3. During the recoil process, the spring is opened by the recoil pressure, the compressed paper stack is loosened, the gap between the paper stack becomes larger, and the filter residue is discharged by recoil;

[0020] 4. After the backwash process stops, under the action of the built-in spring, the special paper laminations are squeezed together again to form a tight high-precision filtration channel, and the filter residue is discharged from the bottom of the filter barrel, forming the entire filtration process;

[0021] In summary, the utility model adopts double-sided rough carbon fiber paper as the material of the filter element, and cooperates with a filter element frame with a simple structure to form a filter element. Among them, the filter element using this double-sided rough carbon fiber paper material can well solve the dissolution problem of the paper filter element in water or aqueous grinding oil, and can achieve high-precision and consumable-free filtration of aqueous grinding oil, which makes up for the gap of conventional filter elements in aqueous grinding oil filtration. At the same time, compared with other aqueous grinding oil filtration methods, it also has more cost and convenience advantages. In actual use, it can achieve higher-precision filtration, no consumables, and the service life of the filter element is more than 5 years. At the same time, it is also convenient to adjust the number of filter elements and the filtration flow according to the working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is an indication diagram of the filter element of the utility model when filtering;

[0024] Figure 2 It is an indication diagram of the backwash of the filter element of the utility model;

[0025] Figure 3 It is a structural cross-sectional view of the filter element skeleton;

[0026] Figure 4 It is a structural schematic diagram of the elastic connection part;

[0027] Markings in the figure:

[0028] 1. Filter element frame; 2. Filter paper; 11. Front baffle; 12. Rear baffle; 13. Support part; 14. Elastic connecting part; 131. Crescent strip; 132. Support ring; 133. Fixing bolt; 141. Spring; 142. Retaining ring 1; 143. Retaining ring 2; 144. Connecting ring; 145. Crescent guide strip. DETAILED DESCRIPTION

[0029] like Figure 1-4 As shown, a non-consumable water-based grinding oil high-precision filter element, in this embodiment, includes a filter element frame 1 and a filter paper 2 sleeved outside the filter element frame 1, wherein the filter paper 2 is a paper laminate composed of double-sided rough carbon fiber paper stacked together;

[0030] The filter element skeleton 1 comprises a front baffle 11, a rear baffle 12, a support portion 13 and an elastic connection portion 14. The stacked double-sided rough carbon fiber paper sleeve is arranged outside the support portion 13 and is compressed and limited between the front baffle 11 and the rear baffle 12. The front baffle 11 is fixedly connected in the filter barrel and is connected to the elastic connection portion 14 and the rear baffle 12 through the support portion 13. The elastic connection portion 14 is placed in the support portion 13 and the end extending out of the support portion 13 is connected to the rear baffle 12, which is used to elastically adjust the distance between the front baffle 11 and the rear baffle 12 to control the degree of compression of the paper stack;

[0031] That is, under normal filtering conditions, the elastic force of the elastic connection part 14 can realize the compression of the filter paper 2 between the front baffle 11 and the rear baffle 12, and when the pressure in the filter barrel is relatively high, the rear baffle 12 can be further forced to press the elastic connection part 14 toward the support part 13, so that the distance between the front baffle 11 and the rear baffle 12 is reduced, the paper laminate is further compressed, and the surface texture of the double-sided rough carbon fiber paper forms a filtering channel, and high-precision filtering can be completed under the action of external pressure;

[0032] During the backflushing process, the pressure of the support part 13 connected to the outside world is relatively high, and the liquid enters the center of the support part 13 from the outside and flows out into the filter barrel. The rear baffle 12 is subjected to downward pressure, and the distance between the front and rear baffles 12 increases, and the gap between the filter papers 2 also increases accordingly, so that the backflushing filter residue operation can be better completed.

[0033] The support part 13 includes a crescent strip 131, a support ring 132 and a fixing bolt 133. The crescent strip 131 is a long skeleton with an arc-shaped cross section. Two groups of coaxially oppositely arranged crescent strips 131 are spaced apart to form a support member for supporting the external paper laminate, and the middle is fixedly connected by multiple groups of support rings 132, and the top is connected to one end of the fixing bolt 133. The fixing bolt 133 is inserted and positioned at the center of the front baffle 11, and the interior is a hollow through structure.

[0034] At this point, the dirty liquid can enter the internal cavity formed by the two groups of crescent strips 131 through the filter paper 2, and flow out of the filter barrel through the hollow through-structure of the fixing bolts 133 under pressure. The structure is relatively simple, so the cost is also low, and it is convenient to install and replace the liquid.

[0035] The elastic connection part 14 includes a spring 141, a retaining ring 142, a retaining ring 143, a connecting ring 144 and a crescent guide bar 145. The crescent guide bar 145 is provided with two groups and is relatively arranged between the crescent bars 131 and coaxially arranged with the crescent bars 131. One end of the crescent guide bar 145 is connected to the retaining ring 142, and the other end is connected to the rear baffle 12 through the connecting ring 144. The two ends of the spring 141 are abutted between the retaining ring 142 and the retaining ring 143. The retaining ring 143 is fixed to the bottom end of the crescent bar 131.

[0036] That is, during the backflushing process, liquid enters the center of the support portion 13 from the outside, and the rear baffle 12 is subjected to downward pressure. The crescent guide strip 145 can be pulled outward along the crescent strip 131 through the connecting ring 144, so that the distance between the front and rear baffles 12 increases. At this time, the retaining ring 142 also descends with the crescent guide strip 145, which can force the top of the compression spring 141 to be compressed and pressed down. During the normal filtering process, when the pressure in the filter barrel is relatively large, the rear baffle 12 presses the elastic connecting portion 14 toward the inside of the support portion 13, and the crescent guide strip 145 can be driven by the connecting ring 144 to move along the crescent strip 131, forcing the filter paper 2 that has been compressed to be further compressed, thereby improving the filtering effect.

[0037] The working principle of the utility model is:

[0038] During filtering, the filter element of the present invention is placed in the filter barrel, and the upper front baffle 11 is fixedly connected to the filter barrel, and the lower rear baffle 12 is connected to the bottom end of the spring 141. The rear baffle 12 will change the distance between the front baffle 11 and the rear baffle 12 (that is, the front and rear baffles 12) as the spring 141 stretches and contracts. As the distance changes, the tightness of the filter paper 2 between the front and rear baffles 12 also changes accordingly. When filtering, pressure is applied in the filter barrel, and the liquid flows to the center of the filter element. At the same time, the rear baffle 12 is also subjected to upward pressure, so that the distance between the front and rear baffles 12 is reduced, the filter paper 2 is compressed, and the filtered liquid flows out from the center of the front baffle 11 (indicated by the arrow in the figure). The backwash process is the opposite. The liquid flows out from the center of the filter element to the filter barrel, and the rear baffle 12 is subjected to downward pressure. The distance between the front and rear baffles 12 increases, and the gap between the filter papers 2 also increases accordingly.

[0039] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-precision filter element for water-based grinding oil without consumables, characterized in that: It comprises a filter element frame (1) and filter paper (2) sleeved outside the filter element frame (1), wherein the filter paper (2) is a paper laminate composed of double-sided rough carbon fiber paper stacked together; The filter element skeleton (1) comprises a front baffle (11), a rear baffle (12), a support portion (13) and an elastic connection portion (14); a stacked double-sided rough carbon fiber paper sleeve is arranged outside the support portion (13) and is compressed and limited between the front baffle (11) and the rear baffle (12); the front baffle (11) is fixedly connected in the filter barrel and is connected to the elastic connection portion (14) and the rear baffle (12) through the support portion (13); the elastic connection portion (14) is arranged in the support portion (13) and the end extending out of the support portion (13) is connected to the rear baffle (12); the elastic connection portion (14) is used to elastically adjust the distance between the front baffle (11) and the rear baffle (12) to control the degree of compression of the paper stack.

2. The high-precision filter element for water-based grinding oil without consumables according to claim 1 is characterized in that: The support portion (13) comprises a crescent bar (131), a support ring (132) and a fixing bolt (133); the crescent bar (131) is a long skeleton with an arc-shaped cross section; a plurality of groups of crescent bars (131) are spaced apart to form a support member for supporting an external paper laminate, and the middle of the crescent bars is fixedly connected by a plurality of groups of support rings (132); the top of the crescent bars is connected to one end of the fixing bolt (133); the fixing bolt (133) is inserted through and positioned at the center of the front baffle (11), and the interior of the fixing bolt is a hollow through structure.

3. The high-precision filter element for water-based grinding oil without consumables according to claim 2 is characterized in that: The elastic connection part (14) comprises a spring (141), a retaining ring 1 (142), a retaining ring 2 (143), a connecting ring (144) and a crescent guide strip (145). The crescent guide strip (145) is arranged between the crescent strips (131), one end of which is connected to the retaining ring 1 (142), and the other end is connected to the rear baffle (12) through the connecting ring (144). The two ends of the spring (141) are abutted between the retaining ring 1 (142) and the retaining ring 2 (143), and the retaining ring 2 (143) is fixed to the bottom end of the crescent strip (131).

4. The high-precision filter element for water-based grinding oil without consumables according to claim 1 is characterized in that: There are two groups of crescent strips (131) which are coaxially arranged opposite to each other.

5. The high-precision filter element for water-based grinding oil without consumables according to claim 1 is characterized in that: Two groups of crescent guide bars (145) are provided and are relatively arranged between the crescent bars (131) and are coaxially arranged with the crescent bars (131).

Images