Working solution filtering device for hydrogen peroxide production

Abstract

The utility model belongs to the technical field of working solution filtering devices, and discloses a working solution filtering device for hydrogen peroxide production, which comprises a filtering box, a liquid inlet pipe and a liquid outlet pipe are respectively and fixedly arranged on the filtering box, an annular plate is fixedly arranged in the filtering box, and a filter screen is fixedly arranged in the center of the annular plate. A self-cleaning mechanism is arranged above the filter screen and comprises an elastic piece, a center plate, connecting frames and an annular scraper, the elastic piece is fixedly arranged at the top end of the filter screen, an annular plate is fixedly arranged at the top end of the elastic piece, and the annular plate and the annular scraper are fixedly arranged through the connecting frames distributed in the circumferential direction of the annular plate; the annular scraper surrounds the outer side of the filter screen and is in sliding fit with the filter screen; according to the self-cleaning filter screen, through the arranged self-cleaning mechanism, in the using process of the filter screen, driving of the annular scraper in the self-cleaning mechanism can be achieved, automatic cleaning of impurities on the filter screen is achieved through the annular scraper, and the self-cleaning filter screen is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to working fluid filter device technical field, specifically for a kind of working fluid filter device for hydrogen peroxide production. BACKGROUND

[0002] In the process of hydrogen peroxide production, one of the ways is to dissolve anthracene derivative in organic solvent to prepare working fluid, then hydrogenate working fluid in the presence of catalyst to generate anthrahydroquinone working fluid, after hydrogenation, oxidation, extraction, purification and other processes, finished product hydrogen peroxide is prepared, and working fluid needs to be filtered during preparation to remove internal impurities, thereby improving the preparation effect of hydrogen peroxide;The conventional way is to filter the impurities in working fluid by filter screen, but the filter screen will be blocked after long time use, resulting in reduced filtering effect, which needs to be solved. SUMMARY

[0003] In view of the above situation, to overcome the defects of the prior art, the utility model provides a working fluid filter device for hydrogen peroxide production, which effectively solves the problem that the filter screen is blocked after long time use, resulting in reduced filtering effect.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a working fluid filter device for hydrogen peroxide production, comprising a filter box, a liquid inlet pipe and a liquid outlet pipe are fixedly arranged on the filter box, an annular plate is fixedly arranged in the filter box, a filter screen is fixedly arranged at the center of the annular plate, a self-cleaning mechanism is arranged above the filter screen, the self-cleaning mechanism comprises an elastic member, a center plate, a connecting frame and an annular scraper, the elastic member is fixedly arranged at the top end of the filter screen, the center plate is fixedly arranged at the top end of the elastic member, the center plate is fixedly arranged with the annular scraper through a plurality of connecting frames distributed along the circumference of the center plate, and the annular scraper is slidably arranged outside the filter screen.

[0005] Preferably, the shape of the filter screen is cylindrical, and the filter holes are uniformly distributed on one end of the filter screen away from the annular plate, and no filter holes are arranged on the other end of the filter screen close to the annular plate.

[0006] Preferably, the elastic member comprises a first spring and a first flexible sleeve, wherein the bottom end of the first spring is fixedly arranged with the filter screen, the top end of the first spring is fixedly arranged with the center plate, and the first flexible sleeve is arranged outside the first spring.

[0007] Preferably, the connecting frame comprises a horizontal rod, a vertical rod and a connecting block, wherein the horizontal rod is fixed outside the center plate, the vertical rod is fixedly arranged at the end of the horizontal rod, and the vertical rod is fixedly arranged with the annular scraper through the connecting block.

[0008] Preferably, the inside of the filter box is further fixedly provided with a conical plate, the tip of the conical plate is vertically downward, the conical plate, the filter box, the annular plate and the filter screen form a containing cavity, and a gap is reserved between the conical plate and the filter screen.

[0009] Preferably, the inside of the containing cavity is provided with a self-closing mechanism, the self-closing mechanism comprises a second spring, a second flexible sleeve and an annular sealing plate, the second spring is uniformly fixed at the top end of the annular plate, the annular sealing plate is fixed at the top end of the second spring and blocks the gap, and the second flexible sleeve is wrapped outside the corresponding second spring and between the annular sealing plate and the annular plate.

[0010] Preferably, the outside of the containing cavity is hingedly provided with an arc-shaped side door, and a filter screen plate is uniformly fixedly embedded on the annular plate.

[0011] Compared with the prior art, the filter device has the beneficial effects that:

[0012] 1) In work, the self-cleaning mechanism is driven by the impact force of the working liquid to drive the annular scraper in the self-cleaning mechanism, so that the impurities on the filter screen are automatically cleaned by the annular scraper, which is more convenient.

[0013] 2) In work, the impurities are collected in the inside of the containing cavity by the cooperation of the conical plate and the self-closing mechanism, so that the impurities are prevented from overflowing, and subsequent centralized treatment is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application.

[0015] In the drawings:

[0016] Figure 1 It is a structural schematic view of a working liquid filter device for hydrogen peroxide production of the present application;

[0017] Figure 2 It is a structural schematic view of the inside of the filter box of the present application;

[0018] Figure 3 It is a sectional view of the filter box of the present application;

[0019] Figure 4 It is a structural schematic view of the self-cleaning mechanism of the present application;

[0020] Figure 5 It is a structural schematic view of the self-closing mechanism of the present application; Figure 3Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Filter box; 2. Inlet pipe; 3. Outlet pipe; 4. Annular plate; 5. Filter screen; 6. Center plate; 7. Connecting frame; 8. Annular scraper; 9. First spring; 10. First flexible sleeve; 11. Horizontal rod; 12. Vertical rod; 13. Connecting block; 14. Conical plate; 15. Navigation cavity; 16. Second spring; 17. Second flexible sleeve; 18. Annular sealing plate; 19. Side door; 20. Filter screen plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Depend on Figures 1-5 The present invention relates to a working fluid filtration device for hydrogen peroxide production, comprising a filter box 1, an inlet pipe 2 and an outlet pipe 3 fixedly disposed on the filter box 1, an annular plate 4 fixedly disposed inside the filter box 1, a filter screen 5 fixedly disposed at the center of the annular plate 4, and a self-cleaning mechanism disposed above the filter screen 5. The self-cleaning mechanism includes an elastic element, a center plate 6, a connecting frame 7 and an annular scraper 8, wherein the elastic element is fixedly disposed at the top of the filter screen 5, the center plate 6 is fixedly disposed at the top of the elastic element, and the center plate 6 is fixedly disposed with the annular scraper 8 through multiple connecting frames 7 distributed around its circumference. The annular scraper 8 surrounds the outside of the filter screen 5 and slides with it.

[0024] With this design, during use, the working fluid enters the interior of the filter box 1 through the inlet pipe 2, then filters impurities in the working fluid through the filter screen 5, and finally discharges through the outlet pipe 3. When the working fluid flows downwards in the inlet pipe 2, it impacts the central plate 6. Under the action of the impact force, the central plate 6 drives the annular scraper 8 to move through the connecting frame 7, causing the annular scraper 8 to slide down the outer wall of the filter screen 5. During this sliding process, the annular scraper 8 scrapes off impurities adhering to the outer wall of the filter screen 5. When the working fluid stops impacting the central plate 6, the annular scraper 8 moves upwards and returns to its original position under the action of the elastic element. During this process, the annular scraper 8 cleans the outer wall of the filter screen 5 again, thus achieving cleaning of the filter screen 5 through the impact of the working fluid, which is quite convenient.

[0025] Specifically, the filter screen 5 is cylindrical in shape, with filter holes evenly distributed at the end of the filter screen 5 away from the annular plate 4, and no filter holes at the end of the filter screen 5 close to the annular plate 4.

[0026] Specifically, the elastic element includes a first spring 9 and a first flexible sleeve 10, wherein the bottom end of the first spring 9 is fixedly disposed with the filter screen 5, the top end of the first spring 9 is fixedly disposed with the center plate 6, and the first flexible sleeve 10 surrounds the outside of the first spring 9; this design facilitates the protection of the first spring 9 by the first flexible sleeve 10.

[0027] Specifically, the connecting frame 7 includes a horizontal rod 11, a vertical rod 12, and a connecting block 13. The horizontal rod 11 is fixed to the outside of the center plate 6, the vertical rod 12 is fixed at the end of the horizontal rod 11, and the vertical rod 12 is fixed to the annular scraper 8 through the connecting block 13.

[0028] Furthermore, a conical plate 14 is fixedly installed inside the filter box 1, with the tip of the conical plate 14 facing vertically downwards. The conical plate 14, the filter box 1, the annular plate 4, and the filter screen 5 form a receiving cavity 15, with a gap reserved between the conical plate 14 and the filter screen 5. With this design, under the impact of the working fluid, impurities in the working fluid enter the receiving cavity 15 through the reserved gap between the conical plate 14 and the filter screen 5, thereby collecting the impurities.

[0029] Furthermore, the cavity 15 is provided with a self-sealing mechanism, which includes a second spring 16, a second flexible sleeve 17 and an annular sealing plate 18. The second spring 16 is uniformly fixed at the top of the annular plate 4, the annular sealing plate 18 is fixed at the top of the second spring 16 and seals the reserved gap, and the second flexible sleeve 17 surrounds the corresponding second spring 16 and is located between the annular sealing plate 18 and the annular plate 4.

[0030] With this design, when the annular scraper 8 slides down, it will squeeze the annular sealing plate 18. After being compressed, the annular sealing plate 18 will squeeze the second spring 16, so that the annular sealing plate 18 will no longer block the reserved gap, so that impurities can enter the interior of the receiving cavity 15 through the reserved gap. When the annular scraper 8 moves up, under the action of the second spring 16, the annular sealing plate 18 moves up and blocks the reserved gap, preventing impurities in the receiving cavity 15 from moving out of its interior.

[0031] Specifically, an arc-shaped side door 19 is hinged to the outside of the receiving cavity 15, and filter screens 20 are uniformly embedded on the annular plate 4. With this design, the filter screens 20 allow the working fluid in the receiving cavity 15 to flow to the bottom of the filter box 1, while the side door 19 facilitates regular cleaning when impurities accumulate in the receiving cavity 15 by opening the side door 19.

Claims

1. A working fluid filtration device for hydrogen peroxide production, comprising a filter box (1), wherein an inlet pipe (2) and an outlet pipe (3) are fixedly disposed on the filter box (1), characterized in that, An annular plate (4) is fixedly installed inside the filter box (1). A filter screen (5) is fixedly installed at the center of the annular plate (4). A self-cleaning mechanism is installed above the filter screen (5). The self-cleaning mechanism includes an elastic element, a central plate (6), a connecting frame (7), and an annular scraper (8). The elastic element is fixedly installed at the top of the filter screen (5), and the central plate (6) is fixedly installed at the top of the elastic element. The central plate (6) is fixedly installed with the annular scraper (8) through multiple connecting frames (7) distributed around its circumference. The annular scraper (8) surrounds the outside of the filter screen (5) and slides with it.

2. The working fluid filtration device for hydrogen peroxide production according to claim 1, characterized in that: The filter screen (5) is cylindrical in shape. Filter holes are evenly distributed on the end of the filter screen (5) away from the annular plate (4), and no filter holes are provided on the end of the filter screen (5) close to the annular plate (4).

3. The working fluid filtration device for hydrogen peroxide production according to claim 1, characterized in that: The elastic element includes a first spring (9) and a first flexible sleeve (10), wherein the bottom end of the first spring (9) is fixedly disposed with the filter screen (5), the top end of the first spring (9) is fixedly disposed with the center plate (6), and the first flexible sleeve (10) surrounds the outside of the first spring (9).

4. The working fluid filtration device for hydrogen peroxide production according to claim 1, characterized in that: The connecting frame (7) includes a horizontal rod (11), a vertical rod (12) and a connecting block (13), wherein the horizontal rod (11) is fixed on the outside of the center plate (6), the vertical rod (12) is fixed at the end of the horizontal rod (11), and the vertical rod (12) is fixed to the annular scraper (8) through the connecting block (13).

5. A working fluid filtration device for hydrogen peroxide production according to claim 1, characterized in that: The filter box (1) is also fixedly provided with a conical plate (14), the tip of the conical plate (14) is set vertically downward, and a receiving cavity (15) is formed between the conical plate (14), the filter box (1), the annular plate (4) and the filter screen (5), and a gap is reserved between the conical plate (14) and the filter screen (5).

6. A working fluid filtration device for hydrogen peroxide production according to claim 5, characterized in that: The cavity (15) is provided with a self-sealing mechanism, which includes a second spring (16), a second flexible sleeve (17) and an annular sealing plate (18). The second spring (16) is uniformly fixed at the top of the annular plate (4), the annular sealing plate (18) is fixed at the top of the second spring (16) and seals the reserved gap, and the second flexible sleeve (17) surrounds the outside of the corresponding second spring (16) and is located between the annular sealing plate (18) and the annular plate (4).

7. A working fluid filtration device for hydrogen peroxide production according to claim 6, characterized in that: An arc-shaped side door (19) is hinged to the outside of the receiving cavity (15), and filter screens (20) are uniformly fixed and embedded on the annular plate (4).

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