A hydraulic cylinder assembly device for sludge filter press

Abstract

The utility model relates to the field of sludge treatment, and in particular to a hydraulic cylinder assembly device for a sludge filter press. It comprises a main hydraulic cylinder and an auxiliary hydraulic cylinder. The cylinder bodies I of four sets of main hydraulic cylinders are respectively arranged at the four corners of the front fixed bracket of the filter press support frame, the push rods I of the main hydraulic cylinders are respectively arranged at the ends of the cylinder bodies II of the four sets of auxiliary hydraulic cylinders, and the push rods II of the auxiliary hydraulic cylinders are respectively arranged at the four corners of the movable end plate of the filter press support frame; a brake lock nut lock is arranged at the connection position between the four corners of the movable end plate and the push rod II; each set of main hydraulic cylinders is concentric with the auxiliary hydraulic cylinders at the corresponding position; a guide rod is respectively arranged at the bottom of the cylinder body II of each set of auxiliary hydraulic cylinders, and the guide rod is matched with the length of the cylinder body II. The utility model shortens the length of the cylinder body and the push rod of the main hydraulic cylinder, so that there is no special requirement for the strength and sealing of the push rod, and effectively solves the problem of high manufacturing difficulty and high cost of the main hydraulic cylinder.

Description

Technical Field

[0001] The utility model relates to the field of sludge treatment, in particular to a hydraulic cylinder assembly device for a sludge filter press. Background Art

[0002] As an environmental protection equipment, the main function of the sludge filter press is to pressurize and dehydrate the high-water content sludge produced in the sewage treatment process to make it into a mud cake with low water content for transportation and disposal. Traditional plate and frame or diaphragm filter presses use hydraulic cylinders to provide filter plate clamping pressure and squeezed water to provide sludge filtration power. The two work together to achieve sludge filtration dehydration. However, this combination makes the filtration pressure during the sludge filtration process relatively small and cannot effectively increase the sludge filtration pressure, resulting in a high moisture content after sludge filtration, or a long treatment cycle and low output, which cannot meet the requirements of subsequent sludge resource reuse or terminal disposal, and cannot meet the growing market demand for sludge filtration. The emerging high-pressure filter presses on the market can directly filter the original sludge to a moisture content of less than 50%, but the hydraulic cylinder used in the sludge high-pressure filter press has a long stroke, and the push rod strength of the hydraulic cylinder is very high. The seal between the push rod and the hydraulic cylinder body needs special treatment, and the cylinder body length must be longer than the push rod length, resulting in a very long cylinder body of the hydraulic cylinder. Considering the weight of the added hydraulic oil, the hydraulic cylinder installation foundation load is very large, and the difficulty and cost of manufacturing the hydraulic cylinder are greatly increased. Summary of the invention

[0003] In view of the problems of difficulty in manufacturing and high cost of hydraulic cylinders in emerging sludge high-pressure filter presses, such as long hydraulic cylinder body, long push rod, high push rod strength requirements, and special treatment required for sealing, the utility model provides a hydraulic cylinder assembly device for sludge filter presses, which shortens the length of the hydraulic cylinder body and the push rod, so that there are no special requirements for push rod strength and sealing, and effectively solves the problems of difficulty in manufacturing and high cost of hydraulic cylinders.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a hydraulic cylinder assembly device for a sludge filter press, including a main hydraulic cylinder and an auxiliary hydraulic cylinder, the cylinder bodies I of the four sets of the main hydraulic cylinders are respectively arranged at the four corners of the front fixed bracket of the filter press support frame, the push rods I of the four sets of the main hydraulic cylinders are respectively arranged at the ends of the cylinder bodies II of the four sets of auxiliary hydraulic cylinders, and the push rods II of the four sets of auxiliary hydraulic cylinders are respectively arranged at the four corners of the movable end plate of the filter press support frame; a brake lock nut lock is arranged at the connection position between the four corners of the movable end plate and the push rod II; each set of the main hydraulic cylinder is concentric with the auxiliary hydraulic cylinder at the corresponding position; a guide rod is respectively arranged at the bottom of the cylinder body II of each set of the auxiliary hydraulic cylinder, and the guide rod is matched with the cylinder body II in length;

[0005] Furthermore, it also includes a support seat, a hoisting seat and a roller. The two support seats are respectively arranged under the two sets of auxiliary hydraulic cylinders at the bottom, one end of the two hoisting seats are respectively arranged under the two sets of auxiliary hydraulic cylinders at the top, and the other end is respectively arranged on the crossbeam of the filter press support frame; rollers are respectively arranged on the support seat and the hoisting seat, and the four sets of auxiliary hydraulic cylinder guide rods are respectively arranged in the grooves of the rollers at corresponding positions.

[0006] The beneficial effect of the utility model is that since the main hydraulic cylinder and the auxiliary hydraulic cylinder are assembled together, when implementing sludge filtration, the auxiliary hydraulic cylinder is first used to perform low-pressure filtration, thereby reducing the stroke of the main hydraulic cylinder. In this way, the length of the cylinder body and the push rod of the main hydraulic cylinder can be shortened, and there are no special requirements for the push rod strength and sealing of the main hydraulic cylinder and the auxiliary hydraulic cylinder, thereby effectively solving the problem of difficulty and high cost in manufacturing hydraulic cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a front view of the mud unloading process of the utility model;

[0008] Figure 2 for Figure 1 AA section view;

[0009] Figure 3 This is the front view of the utility model during mud injection;

[0010] Figure 4 This is the front view of the utility model when the low-pressure filtration is finished;

[0011] Figure 5 It is the front view of the utility model when the filter pressing is completed.

[0012] In the figure: 1. main hydraulic cylinder, 1-1. cylinder body Ⅰ, 1-2. push rod Ⅰ; 2. filter press support frame, 2-1. front fixed bracket, 2-2. movable end plate, 2-3. crossbeam; 3. auxiliary hydraulic cylinder, 3-1. cylinder body Ⅱ, 3-2. push rod Ⅱ, 3-3. guide rod; 4. fixing part; 5. brake lock nut; 6. support seat; 7. lifting seat; 8. roller, 8-1. groove. DETAILED DESCRIPTION

[0013] like Figure 1 , Figure 2As shown, a hydraulic cylinder assembly device for a sludge filter press includes a main hydraulic cylinder 1, a filter press support frame 2, an auxiliary hydraulic cylinder 3, a fixing part 4, a brake lock nut lock 5, a support seat 6, a lifting seat 7 and a roller 8. The cylinder bodies Ⅰ1-1 of the four sets of main hydraulic cylinders are respectively fixed to the four corners of the front fixed bracket 2-1 of the filter press support frame 2, and the front ends of the push rods Ⅰ1-2 of the four sets of main hydraulic cylinders 1 are fixedly connected to the cylinder body Ⅱ3-1 of the auxiliary hydraulic cylinder 3 by the fixing part 4. The push rods Ⅱ3-2 of the auxiliary hydraulic cylinder 3 pass through the four corners of the movable end plate 2-2 on the filter press support frame 2 and are fixed to the movable end plate 2-2. The brake lock nut lock 5 is installed at the connection position between the push rods Ⅱ3-2 and the movable end plate 2-2; the main hydraulic cylinder 1 is concentric with the auxiliary hydraulic cylinder 3.

[0014] Support seats 6 are installed respectively under the two sets of auxiliary hydraulic cylinders 3 at the bottom; the lifting seat 7 is in the shape of a "Z" letter, one end of the two lifting seats 7 is welded to the bottom of the two sets of auxiliary hydraulic cylinders 3 at the top, and the other end is welded to the crossbeam 2-3 of the filter press support frame 2; four rollers 8 are screwed and installed above the support seat 6 and the lifting seat 7, and the guide rods 3-3 of the four sets of auxiliary hydraulic cylinders 3 are respectively embedded in the grooves 8-1 of the rollers 8 at corresponding positions, and the guide rods 3-3 ensure that the direction of the auxiliary hydraulic cylinder 3 does not deviate when it moves.

[0015] When in use, the origin of the hydraulic cylinder assembly device for the sludge filter press is when the extension of the push rod Ⅰ1-2 of the main hydraulic cylinder 1 and the push rod Ⅱ3-2 of the auxiliary hydraulic cylinder 3 reaches the set value, and the sludge filter press is completed according to the following steps:

[0016] Step 1: Mud injection: The position of the push rod Ⅰ1-2 of the main hydraulic cylinder 1 remains unchanged, and the position of the cylinder body Ⅱ3-1 of the auxiliary hydraulic cylinder 3 remains unchanged. Figure 1 As shown; the push rods Ⅱ3-2 of the four sets of auxiliary hydraulic cylinders 3 drive the mobile end plate 2-2 to move toward the fixed bracket 2-1 until the position of the push rod Ⅱ3-2 moves to the specified position, completing the mold closing. At this time, the mud injection conditions are met, such as Figure 3 As shown, mud injection begins, and the auxiliary hydraulic cylinder 3 provides the sealing chamber pressure during mud injection;

[0017] Step 2: low-pressure filtration: After the mud injection is completed, the push rods Ⅱ3-2 of the four sets of auxiliary hydraulic cylinders 3 drive the mobile end plate 2-2 to continue to move toward the fixed bracket 2-1, and perform low-pressure filtration on the sludge until the push rods Ⅱ3-2 are completely retracted into the cylinder body Ⅱ3-1 of the auxiliary hydraulic cylinder 3. At this time, the brake lock nut lock 5 locks the cylinder body Ⅱ3-1 of the auxiliary hydraulic cylinder 3, so that the cylinder body Ⅱ3-1 is fixed together with the mobile end plate 2-2. Figure 4 As shown;

[0018] Step 3, high pressure filtration: The push rod Ⅰ1-2 of the main hydraulic cylinder 1 drives the auxiliary hydraulic cylinder 3 and the movable end plate 2-2 to continue to move toward the fixed bracket 2-1, and filter the sludge in the filter plate group 9 until the filtration is completed. Figure 5 As shown;

[0019] Step 4, mud unloading: mud unloading is carried out after the filtration is completed. The push rod Ⅰ1-2 of the main hydraulic cylinder 1 pushes the auxiliary hydraulic cylinder 3 and the movable end plate 2-2 to move away from the fixed bracket 2-1 until the extension length of the push rod Ⅰ1-2 reaches the set value; the brake lock nut lock 5 is opened, so that the push rod Ⅱ3-2 of the auxiliary hydraulic cylinder 3 can be extended, and the push rod Ⅱ3-2 pushes the movable end plate 2-2 to move away from the fixed bracket 2-1 until the extension length of the push rod Ⅱ3-2 reaches the set value. Figure 1 As shown, start unloading mud;

[0020] During the entire production cycle, the guide rod 3-3 below the cylinder body II3-1 always moves in the groove 8-1 of the roller 8.

Claims

1. A hydraulic cylinder assembly for a sludge filter press, comprising a main hydraulic cylinder (1) and an auxiliary hydraulic cylinder (3), characterized in that: The cylinder bodies I (1-1) of the four sets of the main hydraulic cylinders (1) are respectively arranged at the four corners of the front fixed bracket (2-1) of the filter press support frame (2), the push rods I (1-2) of the four sets of the main hydraulic cylinders (1) are respectively arranged at the ends of the cylinder bodies II (3-1) of the four sets of the auxiliary hydraulic cylinders (3), and the push rods II (3-2) of the four sets of the auxiliary hydraulic cylinders (3) are respectively arranged at the four corners of the movable end plate (2-2) of the filter press support frame (2); a brake lock nut lock (5) is arranged at the connection position between the four corners of the movable end plate (2-2) and the push rod II (3-2); each set of the main hydraulic cylinders (1) is concentric with the auxiliary hydraulic cylinders (3) at the corresponding position; and a guide rod (3-3) is respectively arranged at the bottom of the cylinder body II (3-1) of each set of the auxiliary hydraulic cylinders (3), and the length of the guide rod (3-3) matches that of the cylinder body II (3-1).

2. The hydraulic cylinder assembly device for a sludge filter press according to claim 1, characterized in that: It also includes a support seat (6), a lifting seat (7) and a roller (8), wherein the two support seats (6) are respectively arranged below the two sets of auxiliary hydraulic cylinders (3) at the bottom, one end of the two lifting seats (7) are respectively arranged below the two sets of auxiliary hydraulic cylinders (3) at the top, and the other end is respectively arranged on the crossbeam (2-3) of the filter press support frame (2); the rollers (8) are respectively arranged on the support seat (6) and the lifting seat (7), and the guide rods (3-3) of the four sets of auxiliary hydraulic cylinders (3) are respectively arranged in the grooves (8-1) of the rollers (8) at corresponding positions.

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