Dry sludge filtering device

Abstract

The utility model relates to the technical field of sludge treatment devices, in particular to a dry sludge filtering device which comprises a shell and a filtering assembly, the filtering assembly is mounted in an inner cavity of the shell and comprises a screen, a driving part and an elastic part, a plurality of mounting blocks are arranged in the inner cavity of the shell and evenly distributed in the circumferential direction of the shell, and the screen is arranged in the shell. The screen is mounted on the mounting block, the driving part comprises a vibrator and a compressed air pipeline, the vibrator is fixedly connected to the bottom wall of the screen, the compressed air pipeline is mounted below the vibrator, one end of the compressed air pipeline is communicated with an inner cavity of the vibrator, the other end of the compressed air pipeline extends out of the shell, and the elastic part comprises a plurality of spring bolts; the dry sludge filtering device is arranged, so that metal accessories in the dry sludge can be conveniently and quickly filtered through a screen, the metal parts are further prevented from entering the pelletizer along with the dry sludge, serious damage to parts such as a compression roller and a circular mold of the pelletizer is prevented, and the service life of the pelletizing equipment is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of sludge treatment devices, and in particular to a dry sludge filtering device. Background Art

[0002] As a product of sewage treatment, sludge is enriched with 30%-50% of organic matter and pollutants in sewage. In order to avoid serious environmental pollution and waste of resources caused by organic matter in sludge, sludge pyrolysis gasification technology is often used to gasify the organic matter in sludge into carbon monoxide and hydrogen in an oxygen-deficient environment to remove the organic matter in the sludge. Before sludge gasification, it is usually necessary to dry the sludge to reduce the water content in the sludge and achieve a reduction in sludge disposal.

[0003] In the prior art, a belt dryer is often used to dry sludge. When drying sludge, the wet sludge is first crushed and extruded into strips, and then continuously fed into a batching box or directly into a belt sludge drying box. When the sludge passes through the continuous chamber of the dryer, the gas temperature gradually rises to the expected temperature to perform the evaporation process. The sludge is converted into dry sludge after heat and mass exchange with the hot dry circulating air, and the hot dry circulating air is converted into wet low-temperature circulating air and discharged. The dried sludge is sent to a silo for temporary storage through a scraper, a screw conveyor or a belt conveyor, and finally sent to a granulator for granulation through a screw feeder.

[0004] With regard to the above-mentioned related technologies, when the dried sludge is transported to the silo by a scraper, screw conveyor or belt conveyor and then sent to the granulator by a screw feeder, the metal accessories of the conveying equipment will fall off due to the vibration and enter the granulator along with the sludge, causing serious damage to the roller, ring die and other components of the granulator, thus affecting the service life of the granulator equipment. Utility Model Content

[0005] In order to extend the service life of granulation equipment, the present application provides a dry sludge filtering device.

[0006] The dry sludge filtering device provided in this application adopts the following technical solution:

[0007] A dry sludge filtering device comprises a housing and a filtering assembly, wherein the filtering assembly is installed in an inner cavity of the housing;

[0008] The filter assembly includes a screen, and a plurality of mounting blocks are arranged on the inner side wall of the shell. The plurality of mounting blocks are evenly distributed along the circumferential direction of the shell, and the screen is mounted on the mounting blocks.

[0009] By adopting the above technical scheme, the dry sludge and the metal accessories that fall off the conveying equipment due to vibration during the dry sludge conveying process enter the inner cavity of the shell through the dry sludge discharge port and then fall onto the screen. After being filtered by the screen, the dry sludge falls into the lower cavity of the shell through the filter holes and is conveyed to the granulator through the shell discharge port to complete granulation, and the metal parts are filtered onto the screen and discharged; the dry sludge filtering device is set up to facilitate the rapid filtration of metal accessories in the dry sludge through the screen, thereby preventing the metal parts from entering the granulator together with the dry sludge, causing serious damage to the pressure roller, ring die and other components of the granulator, which is beneficial to extending the service life of the granulation equipment.

[0010] Preferably, the filter assembly further comprises a driving member and an elastic member mounted on each of the mounting blocks;

[0011] The mounting block is connected to the screen through the elastic member;

[0012] The driving member includes a vibrator and a compressed air pipeline;

[0013] The vibrator is fixedly connected to the bottom wall of the screen;

[0014] The compressed air pipeline is installed below the vibrator, and one end of the compressed air pipeline is communicated with the inner cavity of the vibrator, and the other end extends out of the shell.

[0015] By adopting the above technical solution, the driving member is convenient for compressing air through the compressed air pipeline and delivering the compressed air to the inner cavity of the vibrator, providing a power source for the vibrator to drive the vibrator to vibrate, thereby driving the screen to vibrate the dry sludge to the lower cavity of the shell, which is beneficial to improving the separation efficiency of dry sludge and metal parts; in addition, the provision of the vibrator can also ensure that the dry sludge enters the granulator smoothly, which is beneficial to prevent the screen from being blocked or the sludge from bridging.

[0016] Preferably, the driving member further includes a regulating valve, and the regulating valve is installed on the compressed air pipeline.

[0017] By adopting the above technical solution, the regulating valve is provided to facilitate rapid adjustment of the compressed air flow or gas pressure in the compressed air pipeline, thereby changing the vibration intensity and frequency of the screen to meet the filtering requirements of different materials.

[0018] Preferably, the elastic member comprises a spring bolt;

[0019] The spring bolt comprises a bolt portion, a spring portion and a nut portion, wherein the bolt portion sequentially passes through the mounting block and the screen and is bolt-connected to the mounting block and the screen;

[0020] The spring part is sleeved on the bolt part, the spring part is located between the mounting block and the screen, and two ends of the spring part are respectively in contact with the top wall of the mounting block and the bottom wall of the screen;

[0021] The nut part is threadedly connected to the bolt part, the nut part is located above the screen, and a side wall of the nut part abuts against a top wall of the screen.

[0022] By adopting the above technical solution, the elastic member is connected to the mounting block and the bolts of the screen through spring bolts, which facilitates the disassembly, maintenance and replacement of the screen; at the same time, it is convenient to tighten or loosen the spring bolts according to the characteristics of the material itself to adjust the amplitude of the screen, which is beneficial to improving the separation efficiency of dry sludge and metal parts.

[0023] Preferably, the elastic member comprises a compression spring, one end of the compression spring is fixedly connected to the mounting block, and the other end of the compression spring is fixedly connected to the bottom wall of the screen.

[0024] By adopting the above technical solution, the elastic member provided is convenient for providing elastic support for the screen through the compression spring. The buffering effect of the compression spring can reduce the direct impact and wear on the screen, which is beneficial to prolonging the service life of the screen.

[0025] Preferably, it further comprises a connecting assembly, wherein the connecting assembly comprises an upper connecting flange and a lower connecting flange;

[0026] The shell comprises an upper shell part and a lower shell part, the upper connecting flange is mounted on the upper shell part, and the upper connecting flange is bolted to the dry sludge discharge port, the lower connecting flange is mounted on the lower shell part, and the lower connecting flange is bolted to the granulator flange.

[0027] By adopting the above technical solution, the provided connection assembly is conducive to improving the connection stability between the shell and the granulation equipment and between the shell and the sludge drying equipment, thereby ensuring the stable operation of the dry sludge filtering device.

[0028] Preferably, an observation window is provided on the lower shell part, and a window panel and a quick-opening switch are provided at the observation window. One side of the window panel is hinged to the lower shell part, and the other side is connected to the quick-opening switch.

[0029] By adopting the above technical solution, the setting of the window panel and the quick-open switch makes it easy for the staff to control the opening and closing of the window panel, which is conducive to improving the convenience of operation; the setting of the observation window makes it easy for the staff to observe and understand the material distribution, flow conditions and screen blockage conditions in the shell in a timely manner, and make rapid adjustments according to the real-time situation.

[0030] Preferably, sealing gaskets are arranged between the upper connecting flange and the dry sludge discharge port, between the lower connecting flange and the granulator flange, and around the observation window.

[0031] By adopting the above technical solution, the provided sealing gasket can fill the tiny gap at the flange connection or around the observation window to prevent leakage of materials, gas or dust, which is beneficial to improving the sealing performance of the dry sludge filtering device.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The dry sludge filtering device is set up to facilitate the rapid filtration of metal accessories in the dry sludge through the screen, thereby preventing metal parts from entering the granulator along with the dry sludge, causing serious damage to the granulator's rollers, ring dies and other parts, which is beneficial to prolonging the service life of the granulation equipment.

[0034] 2. The driving member is provided to compress the air through the compressed air pipeline and deliver the compressed air to the inner cavity of the vibrator, providing a power source for the vibrator to drive the vibrator to vibrate, thereby driving the screen to vibrate the dry sludge to the lower cavity of the shell, which is beneficial to improve the separation efficiency of the dry sludge and metal parts; in addition, the provision of the vibrator can ensure that the dry sludge enters the granulator smoothly, which is beneficial to prevent the screen from being blocked or the sludge from bridging.

[0035] 3. The elastic parts are connected with the mounting block and the bolts of the screen through spring bolts, which is convenient for disassembly, maintenance and replacement of the screen; at the same time, it is convenient to tighten or loosen the spring bolts according to the characteristics of the material itself to adjust the amplitude of the screen, which is beneficial to improve the separation efficiency of dry sludge and metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the dry sludge filtering device in Example 1 of the present application.

[0037] Figure 2 It is a partial structural schematic diagram of the dry sludge filtering device in Example 1 of the present application, which is intended to illustrate the filtering components.

[0038] Figure 3 It is a schematic diagram of the overall structure of the dry sludge filtering device of Example 2 of the present application.

[0039] Figure 4 It is a partial structural schematic diagram of the dry sludge filtering device in Example 2 of the present application, which is intended to illustrate the filtering components.

[0040] Explanation of the reference numerals: 1. Shell; 11. Upper shell part; 12. Lower shell part; 2. Filter assembly; 21. Screen; 22. Mounting block; 23. Driving member; 231. Vibrator; 232. Compressed air pipeline; 233. Regulating valve; 24. Elastic member; 241. Spring bolt; 2411. Bolt part; 2412. Spring part; 2413. Nut part; 242. Compression spring; 3. Connecting assembly; 31. Upper connecting flange; 32. Lower connecting flange; 4. Observation window; 41. Window panel; 42. Quick-opening switch; 5. Sealing gasket. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-4 This application is described in further detail.

[0042] The application discloses a dry sludge filtering device.

[0043] Example 1

[0044] Reference Figure 1 A dry sludge filtering device includes a shell 1, a filtering component 2 and a connecting component 3, and the filtering component 2 is installed in the inner cavity of the shell 1.

[0045] Reference Figure 1 The housing 1 includes an upper housing portion 11 and a lower housing portion 12. The housing 1 has a diameter of 450 mm and a height of 350 mm. An observation window 4 is provided on the lower housing portion 12. The height of the observation window 4 is 160 mm and the length is 270 mm. In the present application, a window plate 41 and a quick-opening switch 42 are also provided at the observation window 4. One side of the window plate 41 is hinged to the inner wall of the observation window 4, and the other side is connected to the quick-opening switch 42. The connecting assembly 3 includes an upper connecting flange 31 and a lower connecting flange 32. The upper connecting flange 31 is installed on the upper housing portion 11. The upper connecting flange 31 is bolted to the dry sludge discharge port, the bolt specification is M12, and the material is low-carbon alloy steel. The lower connecting flange 32 is installed on the lower shell part 12, and the lower connecting flange 32 is bolted to the granulator flange. In the present application, a bolt hole is provided on the lower connecting flange 32, and the aperture of the bolt hole is the same as the bolt aperture of the granulator; in addition, in the present embodiment, sealing gaskets 5 are arranged between the upper connecting flange 31 and the dry sludge discharge port, between the lower connecting flange 32 and the granulator flange, and around the observation window 4.

[0046] Reference Figure 1 and Figure 2The filter assembly 2 includes a screen 21, a driving member 23 and an elastic member 24 installed on each of the mounting blocks 22. The screen 21 has a diameter of 424 mm, a thickness of 5 mm, and a screen hole gap of 10 mm. In the present application, a plurality of mounting blocks 22 are arranged on the inner wall of the shell 1. The mounting blocks 22 can be set to three, four, or five, as long as the installation of the screen 21 is achieved. In the present embodiment, four mounting blocks 22 are arranged, and the four mounting blocks 22 are evenly distributed along the circumferential direction of the shell 1.

[0047] Reference Figure 1 and Figure 2 The elastic member 24 includes a spring bolt 241. In the present application, the spring bolts 241 may be three, four, or five, as long as a stable connection between the mounting block 22 and the screen 21 is achieved. In the present embodiment, four spring bolts 241 are provided, and the four spring bolts 241 are evenly distributed along the circumferential direction of the housing 1; the spring bolt 241 includes a bolt portion 2411, a spring portion 2412, and a nut portion 2413. The specification of the bolt portion 2411 is M12, and the material is low-carbon alloy steel. The outer diameter of the spring portion 2412 is 34 mm, the total number of turns is 8, and the free length is 10 mm, the material is 65Mn steel, the bolt portion 2411 passes through the mounting block 22 and the screen 21 in sequence and is bolted to the mounting block 22 and the screen 21 respectively, the spring portion 2412 is sleeved on the bolt portion 2411, the spring portion 2412 is located between the mounting block 22 and the screen 21, and the two ends of the spring portion 2412 are respectively abutted against the top wall of the mounting block 22 and the bottom wall of the screen 21, the nut portion 2413 is threadedly connected to the end of the bolt portion 2411 away from the mounting block 22, and the nut portion 2413 is located above the screen 21, and one side wall of the nut portion 2413 is abutted against the top wall of the screen 21.

[0048] Reference Figure 1 and Figure 2 The driving member 23 includes a vibrator 231, a compressed air pipeline 232 and a regulating valve 233. The compressed air pressure is 0.7 MPa. The compressed air pipeline 232 is made of PU polyurethane hose with a pressure resistance of 1.0 MPa, an outer diameter of 8 mm, an inner diameter of 4 mm, and a wall thickness of 2 mm. The vibrator 231 is welded to the center of the bottom wall of the screen 21. The compressed air pipeline 232 is installed below the vibrator 231, and one end of the compressed air pipeline 232 is connected to the inner cavity of the vibrator 231, and the other end extends out of the shell 1. The regulating valve 233 is installed on the compressed air pipeline 232, and the gas flow and gas pressure in the compressed air pipeline 232 are quickly adjusted through the regulating valve 233.

[0049] The implementation principle of a dry sludge filtering device in an embodiment of the present application is as follows: first, the dry sludge and the metal accessories that fall off the conveying equipment due to vibration during the dry sludge conveying process enter the inner cavity of the shell 1 through the dry sludge discharge port and then fall onto the screen 21, then the compressed air pipe 232 is adjusted to compress the air, and the compressed air is delivered to the inner cavity of the vibrator 231, driving the vibrator 231 to vibrate, thereby driving the screen 21 to vibrate and vibrate the dry sludge to the lower cavity of the shell 1, and then transported to the granulator through the discharge port of the shell 1 to complete granulation, and the metal parts are filtered onto the screen 21 and discharged.

[0050] Example 2

[0051] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that, in this embodiment, the elastic member 24 includes a compression spring 242, and the compression spring 242 can be set to three, four, or five, as long as the compression spring 242 is used to achieve a stable connection between the mounting block 22 and the screen 21. In this embodiment, four compression springs 242 are provided, and the four compression springs 242 are evenly distributed along the circumferential direction of the shell 1, and one end of the compression spring 242 is welded to the top wall of the mounting block 22, and the other end is welded to the bottom wall of the screen 21.

[0052] The implementation principle of a dry sludge filtering device in an embodiment of the present application is as follows: first, the dry sludge and the metal accessories that fall off the conveying equipment due to vibration during the dry sludge conveying process enter the inner cavity of the shell 1 through the dry sludge discharge port and then fall onto the screen 21, then the compressed air pipe 232 is adjusted to compress the air, and the compressed air is delivered to the inner cavity of the vibrator 231, driving the vibrator 231 to vibrate, thereby driving the screen 21 to vibrate and vibrate the dry sludge to the lower cavity of the shell 1, and then transported to the granulator through the discharge port of the shell 1 to complete granulation, and the metal parts are filtered onto the screen 21 and discharged.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dry sludge filtering device, characterized in that: It comprises a housing (1) and a filter assembly (2), wherein the filter assembly (2) is installed in the inner cavity of the housing (1); The filter assembly (2) comprises a screen (21); a plurality of mounting blocks (22) are arranged on the inner side wall of the housing (1); the plurality of mounting blocks (22) are evenly distributed along the circumferential direction of the housing (1); and the screen (21) is mounted on the mounting blocks (22); The filter assembly (2) further comprises a driving member (23) and an elastic member (24) mounted on each of the mounting blocks (22); The mounting block (22) is connected to the screen (21) via the elastic member (24); The driving member (23) includes a vibrator (231) and a compressed air pipeline (232); The vibrator (231) is fixedly connected to the bottom wall of the screen (21); The compressed air pipeline (232) is installed below the vibrator (231), and one end of the compressed air pipeline (232) is connected to the inner cavity of the vibrator (231), and the other end is extended out of the housing (1).

2. The dry sludge filtering device according to claim 1, characterized in that: The driving member (23) further comprises a regulating valve (233), and the regulating valve (233) is installed on the compressed air pipeline (232).

3. The dry sludge filtering device according to claim 1, characterized in that: The elastic member (24) comprises a spring bolt (241); the spring bolt (241) comprises a bolt portion (2411), a spring portion (2412) and a nut portion (2413); the bolt portion (2411) passes through the mounting block (22) and the screen (21) in sequence and is bolted to the mounting block (22) and the screen (21); The spring portion (2412) is sleeved on the bolt portion (2411), the spring portion (2412) is located between the mounting block (22) and the screen (21), and two ends of the spring portion (2412) are respectively in contact with the top wall of the mounting block (22) and the bottom wall of the screen (21); the nut portion (2413) is threadedly connected to the bolt portion (2411), the nut portion (2413) is located above the screen (21), and one side wall of the nut portion (2413) is in contact with the top wall of the screen (21).

4. The dry sludge filtering device according to claim 3, characterized in that: The elastic member (24) comprises a compression spring (242), one end of the compression spring (242) is fixedly connected to the mounting block (22), and the other end is fixedly connected to the bottom wall of the screen (21).

5. The dry sludge filtering device according to claim 1, characterized in that: It also includes a connecting assembly (3), wherein the connecting assembly (3) includes an upper connecting flange (31) and a lower connecting flange (32); The shell (1) comprises an upper shell part (11) and a lower shell part (12); the upper connecting flange (31) is mounted on the upper shell part (11), and the upper connecting flange (31) is bolted to the dry sludge discharge port; the lower connecting flange (32) is mounted on the lower shell part (12), and the lower connecting flange (32) is bolted to the granulator flange.

6. The dry sludge filtering device according to claim 5, characterized in that: An observation window (4) is provided on the lower housing portion (12), and a window plate (41) and a quick-open switch (42) are provided at the observation window (4); one side of the window plate (41) is hinged to the lower housing portion (12), and the other side is connected to the quick-open switch (42).

7. The dry sludge filtering device according to claim 6, characterized in that: Sealing gaskets (5) are provided between the upper connecting flange (31) and the dry sludge discharge port, between the lower connecting flange (32) and the granulator flange, and around the periphery of the observation window (4).

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