Activated sludge dewatering hydraulic composite module

Abstract

The utility model relates to a hydraulic composite module for dewatering activated sludge. The hydraulic composite module comprises an extruding rack, a lower underframe is arranged on the extruding rack; a lower top cylinder piece is arranged on the lower underframe; an upper mold closing hydraulic cylinder is arranged above the extruding rack; an opening and closing mold is arranged between the upper mold closing hydraulic cylinder and the lower ejection cylinder piece; the opening and closing mold comprises a middle mold piece connected with the lower end lower ejection cylinder piece and an upper mold piece connected with the upper mold closing hydraulic cylinder; a middle mold part is arranged between the lower mold part and the upper mold part; the device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to a hydraulic composite module for activated sludge dewatering. Background Technology

[0002] Traditional activated sludge dewatering methods include centrifugation, which can clog the centrifuge mesh and require regular cleaning. Other methods use screw extrusion, but this increases wear and tear, causing sludge to fall and accumulate.

[0003] How to achieve continuous operation, reduce wear and tear, improve dehydration efficiency, and improve existing dehydration solutions have become urgent technical problems to be solved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a hydraulic composite module for activated sludge dewatering.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] To achieve automated dewatering, an activated sludge dewatering hydraulic composite module includes an extrusion frame; a lower base frame is provided on the extrusion frame;

[0007] A lower top cylinder is installed on the lower base frame;

[0008] An upper die-closing hydraulic cylinder is installed above the extrusion frame;

[0009] The upper mold closing hydraulic cylinder and the lower ejector cylinder are equipped with mold opening and closing mechanisms;

[0010] The opening and closing mold includes a lower mold component fixed on the extrusion press frame worktable and an upper mold component connected to the upper closing mold hydraulic cylinder;

[0011] A middle mold component is provided between the lower mold component and the upper mold component.

[0012] As a further improvement to the above technical solution:

[0013] To improve the dewatering performance of activated sludge and facilitate the cleaning of filter cloth, the filter cloth has an upward section and a downward section, and the position of the filter cloth changes with the cycle of opening and closing the mold.

[0014] The upward section passes between the upper mold part and the middle mold part;

[0015] The downward segment passes between the lower mold part and the middle mold part.

[0016] A hollow cavity is provided in the middle of the intermediate mold part;

[0017] Connecting flange assembly A and connecting flange assembly B are respectively installed at both ends of the hollow cavity;

[0018] Connecting flange assembly A and connecting flange assembly B are located on both sides of the filter cloth component;

[0019] A dewatering filter cylinder is connected to the connecting flange assembly A via connecting kit A;

[0020] A feed pipe is connected to side B of the connecting flange assembly.

[0021] To achieve unidirectional mud feeding, a supporting inner sleeve hole is connected in the connecting flange assembly B via an inner rib.

[0022] A feed check valve is installed in the inner sleeve hole of the support;

[0023] The feed check valve includes a valve stem assembly disposed in the inner sleeve bore of the support via a valve stem spring.

[0024] To increase the water flow area, an upper filter plate is provided between the upper surface of connecting flange assembly A and connecting flange assembly B and the lower surface of the upper mold component.

[0025] A lower filter plate is provided between the lower surfaces of connecting flange assembly A and connecting flange assembly B and the upper surface of the lower mold component;

[0026] After the corresponding edges of the lower and upper filter plates are closed and sealed to the corresponding surfaces of the middle mold parts, they are sealed together.

[0027] To create the extrusion space, the lower filter plate, upper filter plate, and middle mold component are used to enclose the hollow cavity;

[0028] The lower and upper filter plates have through holes;

[0029] An upper support plate and a lower support plate are respectively provided on the upper part of the upper filter plate and the lower part of the lower filter plate.

[0030] To achieve lubrication, an oil nozzle is provided on the connecting flange assembly A, and an oil filling hole corresponding to the oil nozzle is provided on the connecting kit A.

[0031] Negative pressure drainage ports that communicate with the hollow cavity are provided on the upper and lower mold parts.

[0032] In order to prevent the filter cloth from shifting when it is tightened, an upper elastic push rod and a lower elastic push rod are respectively provided between the upper mold part and the middle mold part, and between the middle mold part and the lower mold part.

[0033] A fabric pressing platform is installed on the connecting flange assembly B to support the downward section;

[0034] The upper mold closing hydraulic cylinder is connected to the upper support plate;

[0035] The workbench of the connecting frame is connected to the lower support plate;

[0036] The intermediate mold component is movably mounted on the guide light rod;

[0037] The lower elastic ejector pin is installed on the lower mold part;

[0038] The lower elastic push rod acts on the lower surface of the middle mold part.

[0039] The upper elastic ejector pin is installed below the upper mold component;

[0040] The upper elastic push rod acts on the upper surface of the middle mold part.

[0041] The upper section is located between the upper filter plate and the middle mold component;

[0042] The downward section is located between the lower filter plate and the middle mold component;

[0043] The upper and lower elastic push rods respectively abut against the upper and lower sections of the filter cloth component.

[0044] To achieve full contact, after the upper mold part and the lower mold part are closed, the upper elastic ejector rod and the lower elastic ejector rod make pressure contact with the middle mold surface corresponding to the upper and lower sections of the filter cloth part, respectively.

[0045] This invention enables automatic dehydration, continuous operation, and prevents clogging. It boasts good compatibility, thorough filtration, and high dehydration efficiency. The invention is rationally designed, low-cost, sturdy and durable, safe and reliable, simple to operate, time-saving, labor-saving, cost-effective, compact in structure, and easy to use. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the filter cloth component of this utility model.

[0047] Figure 2 This is a schematic diagram of the upper mold closing hydraulic cylinder structure of this utility model.

[0048] Figure 3 This is a schematic diagram of the lower mold component of this utility model.

[0049] Figure 4 This is a schematic diagram of the negative pressure drainage outlet structure of this utility model.

[0050] Figure 5 This is a schematic diagram of the extrusion frame structure of this utility model.

[0051] The components are as follows: 301, filter cloth assembly; 302, extrusion frame; 303, lower base frame; 304, lower top cylinder assembly; 305, upper mold closing hydraulic cylinder; 306, dewatering filter cylinder; 307, upper support plate; 308, feed pipe; 309, upper mold assembly; 310, upper elastic push rod; 311, lower support plate; 312, upper filter plate; 313, lower mold assembly; 314, lower elastic push rod; 315, connecting kit A; 316, lower filter plate; 317, hollow cavity; 318, connecting flange assembly A; 319, oil nozzle assembly; 320, guide rod; 321, connecting flange assembly B; 322, support inner sleeve hole; 323, valve stem assembly; 324, valve stem spring; 325, pressing platform; 326, oil injection hole; 327, negative pressure drain port; 328, middle mold assembly; 329, lower connecting frame. Detailed Implementation

[0052] Example 1, such as Figure 1-5 As shown, the activated sludge dewatering hydraulic composite module of this embodiment includes an extrusion frame 302, which serves as a support frame, and its structure is not limited to the limitations of the attached drawings; the extrusion frame 302 is connected to a lower base frame 303;

[0053] A lower top cylinder component 304 is installed on the lower base frame 303.

[0054] An upper mold-closing hydraulic cylinder 305 is installed on the extrusion frame 302. It can be driven by an electric cylinder, hydraulic system, or linear drive such as a screw. It realizes the mold-closing and mold-opening actions.

[0055] A mold opening and closing mechanism is provided between the upper mold closing hydraulic cylinder 305 and the extrusion frame 302 worktable;

[0056] The opening and closing mold includes a middle mold component 313 fixed on the worktable of the extrusion frame 302 and connected to the lower end push cylinder component 304, and an upper mold component 309 connected to the upper closing mold hydraulic cylinder 305;

[0057] A middle mold 328 is provided between the lower mold 313 and the upper mold 309, which can be set up to float up and down, thereby realizing extrusion dehydration.

[0058] For ease of description, the filter cloth component 301 has an upward section and a downward section;

[0059] Specifically, the upward section passes between the upper mold part 309 and the middle mold part 328;

[0060] The downward segment passes between the lower mold part 313 and the middle mold part 328.

[0061] A hollow cavity 317 is provided in the middle of the intermediate mold part 328 for storing sludge;

[0062] Connecting flange assembly A318 and connecting flange assembly B321 are respectively provided at both ends of the hollow cavity 317 to achieve connection;

[0063] Connecting flange assembly A318 and connecting flange assembly B321 are located on both sides of filter cloth component 301;

[0064] A dewatering filter cylinder 306 is connected to the connecting flange assembly A318 via the connecting kit A315, thereby achieving squeeze dewatering;

[0065] A feed pipe 308 is connected to the B321 side of the connecting flange assembly to enable sludge feeding.

[0066] The connecting flange assembly B321 is connected to the inner support sleeve hole 322 via the inner rib, thereby providing central support.

[0067] A feed check valve is installed in the inner sleeve hole 322 of the support; it realizes one-way control.

[0068] The feed check valve includes a valve stem assembly 323 disposed in the inner support sleeve hole 322 via a valve stem spring 324, which prevents backflow and provides a seal.

[0069] In order to make full use of the space for dehydration, an upper filter plate 312 is provided between the upper surface of the connecting flange assembly A318 and the connecting flange assembly B321 and the lower surface of the upper mold part 309.

[0070] To make full use of the space for dehydration, a lower filter plate 316 is provided between the lower surfaces of connecting flange assembly A318 and connecting flange assembly B321 and the upper surface of lower mold part 313.

[0071] The corresponding edges of the lower filter plate 316 and the upper filter plate 312 are connected to the corresponding surfaces of the middle mold part 328, thereby forming a closed space.

[0072] The lower filter plate 316, the upper filter plate 312, and the middle mold part 328 are used to enclose the hollow cavity 317;

[0073] The lower filter plate 316 and the upper filter plate 312 have through holes;

[0074] An upper support plate 307 and a lower support plate 311 are respectively provided on the upper part of the upper filter plate 312 and the lower part of the lower filter plate 316.

[0075] For lubrication, an oil nozzle 319 is provided on the connecting flange assembly A318, and an oil filling hole 326 corresponding to the oil nozzle 319 is provided on the connecting kit A315.

[0076] To improve drainage efficiency, negative pressure drainage ports 327 that communicate with the hollow cavity 317 are provided on the upper mold part 309 and the lower mold part 313.

[0077] To prevent the filter cloth from being unable to be clamped and secured during mold closing, and to allow the filter cloth to be stretched, an upper elastic push rod 310 and a lower elastic push rod 314 are respectively provided between the upper mold part 309 and the middle mold part 328 and between the middle mold part 328 and the lower mold part 313.

[0078] A fabric pressing platform 325 is provided on the connecting flange assembly B321 to support the downward section;

[0079] The upper mold closing hydraulic cylinder 305 is connected to the upper support plate 307;

[0080] The extrusion press frame 302 is connected to the lower support plate 311 for the worktable.

[0081] A guide rod 320 is provided at the lower end of the central mold part 328 to enable the central mold part 328 to move flexibly.

[0082] The lower elastic push rod 314 is provided on the lower mold part 313; thus, the lower elastic push rod 314 is in contact with the filter cloth part 301 between the lower plane of the middle mold part 328.

[0083] The upper section is located between the upper filter plate 312 and the middle mold part 328; the lower section is located between the lower filter plate 316 and the middle mold part 328; thus forming a space to enclose the sludge.

[0084] The upper elastic push rod 310 and the lower elastic push rod 314 respectively abut against the upper section and the lower section of the filter cloth component 301.

[0085] After the upper mold part 309 and the lower mold part 313 are closed, the upper elastic ejector rod 310 and the lower elastic ejector rod 314 make pressure contact with the upper section and the lower section of the filter cloth part 301 and the corresponding middle mold part 328, respectively.

[0086] Example 2, as a specific application, such as Figure 1-4 This hydraulic system consists of three hydraulic cylinders, each driven separately.

[0087] The hydraulic master cylinder controls the bidirectional filter press mold opening and closing operation. The upper mold component 309, the middle mold component 328, and the lower mold component 313 open and close after closing, forming a closed chamber. The upper mold component 309 and the lower mold component 313 each have steel plates with water-permeable holes (i.e., upper filter plate 312 and lower filter plate 316).

[0088] One end of the feed pipe 308 is connected to one side of the middle mold part 328 through a flange. There is a feed check valve at the connection. The valve has a compression spring. Because the equipment is connected to an external negative pressure station, the drain pipe and the negative pressure pipeline are the same pipeline.

[0089] During operation, the sludge is conveyed into the mold by pushing open the feed check valve through the feed pipe. The feed check valve is fixedly connected to the flange at one end of the mold in the opening and closing mold.

[0090] Furthermore, the other side of the middle mold component 328 is connected to the dewatering filter press piston rod via a flange. A flat surface is provided at the top of the flanges at both ends. The upper filter cloth passes through the middle mold and the upper mold, and the lower filter cloth passes through the middle mold and the lower mold. The sequence from top to bottom is: upper mold, filter plate, filter cloth, middle mold, filter cloth, lower mold filter plate, lower mold. The upper mold has elastic push rods on both sides. When the mold is closed and compressed, the elastic push rods press the filter cloth firmly onto the flat surface, tightening the filter cloth and preventing it from shifting during mold closing.

[0091] Furthermore, after the mold is closed, the air, sludge, and moisture inside the mold are discharged through the filter holes of the filter cloth and filter plate. There is a negative pressure space between the upper mold, the lower mold, and the mold cavity, and the sludge and moisture are discharged through the negative pressure drainage ports of the upper and lower molds.

[0092] The advantage of this scheme is that the hydraulic opening and closing mold forms a closed space, and the sludge can be effectively compressed and dewatered by the extrusion of the dewatering filter cylinder.

[0093] (2) Dewatering and extrusion cylinder: It consists of a hydraulic power source provided by the hydraulic system and a dewatering piston rod. After the mold is closed, the dewatering and extrusion piston rod is pushed towards the mold cavity. After the mold is closed, the sludge is compressed and dewatered to a certain extent. When the pressure in the cavity decreases, the piston rod continues to push forward to further squeeze and dewater the sludge. The water is discharged through the drain hole. After the mold is opened, the dewatered sludge is placed on the filter cloth. The movement of the filter cloth drives the sludge to be discharged.

[0094] Initially, the mold opens and closes, and the piston rod is squeezed at the connecting flange. One end of the piston rod does not completely exit the mold cavity. The tapered end of the piston rod passes through the connecting flange and is fixed to the middle mold. Therefore, the opening and closing of the middle mold causes the piston rod to move up and down. During operation, after the pressure decreases after the mold closes, the piston rod advances to squeeze and dewater the sludge.

[0095] Considering that the weight distribution may be biased to one side when the dehydration piston moves forward or backward, it is advisable to fix the side of the piston rod that does not enter the mold opening and closing mechanism with a spring to prevent the piston rod from shifting weight when it moves backward after dehydration.

[0096] The piston rod and the connecting flange are connected by a rubber sealing ring and a Y-type sealing ring to ensure tightness and sealing within the mold cavity. The connecting flange is equipped with an oil injection hole to facilitate lubrication of the extruded piston rod during operation.

[0097] A lower ejector cylinder is installed at the bottom of the main body, which drives the top plate. The top plate is connected to the middle mold. When the mold is closed, the hydraulic main cylinder drives the upper mold to move downward, and the lower ejector cylinder drives the top plate, which drives the lower middle mold to move up and down to complete the mold closing.

[0098] As the working principle, firstly, the sludge enters the hollow cavity 317 through the feed pipe 308 and is received by the downward section of the filter cloth component 301; then, the lower top cylinder component 304 and the upper mold closing hydraulic cylinder 305 respectively drive the lower floating middle mold component and the upper mold component 309 to engage with the lower mold component 313. At the same time, the filter cloth 301 is positioned by the lower elastic push rod 314 and the upper elastic push rod 310; secondly, the dewatering filter cylinder 306 extends into the hollow cavity 317 to squeeze and dewater. After dewatering, the mold opens, the filter cloth component 301 moves forward, and the downward section sends out the dewatered sludge.

[0099] This utility model is described in detail for the purpose of making the disclosure clearer, and the prior art will not be listed one by one.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. It is obvious to those skilled in the art that multiple technical solutions of this utility model can be combined. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. All technical contents not described in detail in this utility model are publicly known technologies.

Claims

1. A hydraulic composite module for activated sludge dewatering, characterized in that: Includes an extrusion frame (302); a lower base frame (303) is provided on the extrusion frame (302); A lower top cylinder (304) is provided on the lower base frame (303); An upper die-closing hydraulic cylinder (305) is provided above the extrusion frame (302); A mold opening and closing mechanism is provided between the upper mold closing hydraulic cylinder (305) and the worktable of the extrusion frame (302); The opening and closing mold includes a middle mold component (328) disposed on the extrusion frame (302) and connected to the lower end of the lower push cylinder component (304) and an upper mold component (309) connected to the upper closing mold hydraulic cylinder (305); A lower mold component (313) is provided below the middle mold component (328).

2. The activated sludge dewatering hydraulic composite module according to claim 1, characterized in that: The filter cloth element (301) has an upward section and a downward section; The upward section passes between the upper mold part (309) and the middle mold part (328); The downward segment passes between the lower mold part (313) and the middle mold part (328).

3. The activated sludge dewatering hydraulic composite module according to claim 2, characterized in that: A hollow cavity (317) is provided in the middle of the middle mold part (328); Connecting flange assembly A (318) and connecting flange assembly B (321) are respectively provided at both ends of the hollow cavity (317). Connecting flange assembly A (318) and connecting flange assembly B (321) are located on both sides of the filter cloth component (301); A dewatering filter cylinder (306) is connected to the connecting flange assembly A (318) side via connecting kit A (315); A feed pipe (308) is connected to the side of the connecting flange assembly B (321).

4. The activated sludge dewatering hydraulic composite module according to claim 3, characterized in that: In the connecting flange assembly B (321), there is a supporting inner sleeve hole (322) connected by an inner rib. A feed return valve is provided in the inner sleeve hole (322); The feed return valve includes a valve stem assembly (323) disposed in a support inner sleeve bore (322) via a valve stem spring (324).

5. The activated sludge dewatering hydraulic composite module according to claim 3, characterized in that: An upper filter plate (312) is provided between the upper surface of the connecting flange assembly A (318) and the connecting flange assembly B (321) and the lower surface of the upper mold part (309); A lower filter plate (316) is provided between the lower surface of the connecting flange assembly A (318) and the connecting flange assembly B (321) and the upper surface of the lower mold part (313). The corresponding edges of the lower filter plate (316) and the upper filter plate (312) are connected to the corresponding surfaces of the middle mold part (328).

6. The activated sludge dewatering hydraulic composite module according to claim 5, characterized in that: The lower filter plate (316), the upper filter plate (312), and the middle mold part (328) are used to enclose the hollow cavity (317); The lower filter plate (316) and the upper filter plate (312) have through holes; An upper support plate (307) and a lower support plate (311) are respectively provided on the upper part of the upper filter plate (312) and the lower part of the lower filter plate (316).

7. The activated sludge dewatering hydraulic composite module according to claim 6, characterized in that: An oil nozzle (319) is provided on the connecting flange assembly A (318), and an oil filling hole (326) corresponding to the oil nozzle (319) is provided on the connecting kit A (315). Negative pressure drain ports (327) that communicate with the hollow cavity (317) are provided on the upper mold part (309) and the lower mold part (313).

8. The activated sludge dewatering hydraulic composite module according to claim 6, characterized in that: An upper elastic push rod (310) and a lower elastic push rod (314) are respectively provided between the upper mold part (309) and the middle mold part (328) and between the middle mold part (328) and the lower mold part (313). A fabric pressing platform (325) is provided on the connecting flange assembly B (321) to support the downward section; The upper mold closing hydraulic cylinder (305) is connected to the upper support plate (307); The worktable of the extrusion frame (302) is connected to the lower support plate (311); A guide rod (320) is provided at the lower end of the middle mold part (328); The lower cylinder component (304) acts on the guide rod (320) through the lower connecting bracket (329); It moves upward under the force of the guide rod (320) and moves downward under the pressure of the upper mold part (309); The lower elastic push rod (314) is provided between the lower support plate (311) and the lower mold part (313); The upper elastic push rod (310) is set between the upper support plate (307) and the upper mold part (309).

9. The activated sludge dewatering hydraulic composite module according to claim 8, characterized in that: The upper section of the filter cloth component (301) is located between the upper filter plate (312) and the middle mold component (328); The downward section of the filter cloth component (301) is located between the lower filter plate (316) and the middle mold component (328); The upper elastic push rod (310) and the lower elastic push rod (314) respectively abut against the upper section and the lower section of the filter cloth component (301); The lower elastic push rod (314) generates pressure to control the Y-axis offset of the filter cloth (301) in the downward section between the lower surface of the middle mold part (328) and the lower elastic push rod (314); The upper elastic push rod (310) generates pressure to control the Y-axis offset of the filter cloth (301) upward section between the upper surface of the middle mold part (328) and the upper elastic push rod (310); The upper mold component (309), the upper elastic push rod (310), and the upper filter plate (312) are combined with the middle mold component (328) for lifting and lowering.

10. The activated sludge dewatering hydraulic composite module according to claim 9, characterized in that: Before the upper mold part (309) and the lower mold part (313) are closed, the upper elastic ejector (310) and the lower elastic ejector (314) make pressure contact with the upper section and the lower section of the filter cloth part (301) and the corresponding middle mold part (328) respectively.

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