Filter element replacing device of hydraulic high-pressure filter

Abstract

The utility model discloses a hydraulic high-pressure filter element replacing device which comprises a wheel type moving platform, an elastic lifting device, a bearing, a clamping plate and a pre-jacking platform, and the pre-jacking platform is located above the wheel type moving platform and connected with the wheel type moving platform through the elastic lifting device. The clamping plate is a circular plate horizontally placed on the upper portion of the pre-jacking platform, the bottom of the clamping plate is rotationally connected with the pre-jacking platform through a bearing, a nut clamping groove matched with a nut at the lower end of a filter element fixing bolt of the high-pressure filter cartridge is formed in the middle of the clamping plate, and symmetrical rotating handles are arranged on the two sides of the clamping plate. The wheel type moving platform is used for bearing and conveying the filter element, the jacking jack is used for lifting the filter element, and the nut is rotated through the clamping plate with the rotating handle, so that the filter element replacement difficulty is greatly reduced, the labor intensity of workers can be reduced, the filter element replacement efficiency can be improved, the equipment shutdown maintenance time can be shortened, and the safety risk can be eliminated.

Description

Technical Field

[0001] The utility model relates to a device for replacing a filter element of a hydraulic high-pressure filter, belonging to the technical field of metallurgical equipment. Background Art

[0002] The 1780mm high-end plate production line is a large-scale, modern production line with a relatively high degree of automation. Hydraulic systems are widely used in equipment such as roller gap control. The hydraulic system is designed with a three-stage filtration system, including bypass circulation filtration, return oil filtration, and high-pressure pump outlet filtration. The operating pressure of the high-pressure pump outlet filtration system is above 300 bar, and the filter element adopts a high-pressure differential filter element. All filter cartridges and filter elements are designed to be large in size and weight, which brings inconvenience to the filter element replacement operation. The high-pressure filter element is a cylindrical filter element, which is installed in the high-pressure filter cartridge. The bottom of the high-pressure filter cartridge is open and has a removable lower end cover. The upper end of the filter element fixing bolt is fixed to the middle of the upper end cover of the high-pressure filter cartridge. The lower end of the filter element fixing bolt passes through the center hole of the high-pressure filter element and the lower end cover in turn and is screwed into the nut, thereby fixing the filter element inside the high-pressure filter cartridge. When replacing a high-pressure filter element, you must first open the pressure relief port at the bottom of the filter cartridge to drain the oil in the cartridge, then use a wrench to remove the nut on the bottom of the lower end cover before you can manually remove the lower end cover of the high-pressure filter cartridge and the old filter element. When installing a new filter element, you need to use the lower end cover to lift the filter element. After the new filter element is inserted into the filter cartridge, use the filter element fixing bolts and nuts to fix the lower end cover to the filter cartridge. Currently, the filter element and the lower end cover need to be manually lifted during both removal and installation. Due to the large size and weight of the filter element, the disassembly and installation operations require the cooperation of multiple people, resulting in low work efficiency and high labor intensity. In addition, there are great safety risks, which can easily damage the threads and even injure the operator. Therefore, it is very necessary to design a dedicated hydraulic high-pressure filter element replacement device. Utility Model Content

[0003] The purpose of the utility model is to provide a hydraulic high-pressure filter element replacement device to address the shortcomings of the existing technology, so as to reduce the difficulty of filter element replacement, improve replacement efficiency, reduce the labor intensity of operators, and eliminate safety risks.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A hydraulic high-pressure filter element replacement device includes a wheeled mobile platform, an elastic lifting device, a bearing, a clamping plate and a pre-lifting platform. The pre-lifting platform is located above the wheeled mobile platform and is connected to the wheeled mobile platform through the elastic lifting device. The clamping plate is a circular plate placed horizontally on the upper part of the pre-lifting platform. The bottom of the clamping plate is rotatably connected to the pre-lifting platform through a bearing. A nut clamping groove is provided in the middle of the clamping plate to match the nut at the lower end of the filter element fixing bolt of the high-pressure filter cartridge, and symmetrical rotating handles are provided on both sides of the clamping plate.

[0006] The above-mentioned hydraulic high-pressure filter element replacing device, the elastic lifting device includes a platform guide sleeve, a jacking jack, a lifting platform, a pre-jacking platform guide sleeve and a spring, the lifting platform is located between the wheeled mobile platform and the pre-jacking platform and is connected to the pre-jacking platform through a spring, the jacking jack is placed on the wheeled mobile platform, and the top rod of the jacking jack is against the middle part of the lifting platform; the platform guide sleeve is vertically fixed to the top of the wheeled mobile platform, and a vertical lifting guide rod is fixed at the bottom of the lifting platform, and the lower end of the lifting guide rod is slidably inserted into the platform guide sleeve, the pre-jacking platform guide sleeve is vertically fixed to the upper part of the lifting platform, and a vertical slide rod matching the pre-jacking platform guide sleeve is fixed at the bottom of the pre-jacking platform, and the lower end of the vertical slide rod is slidably inserted into the pre-jacking platform guide sleeve.

[0007] In the above-mentioned hydraulic high-pressure filter element replacement device, the lifting platform and the pre-top platform are both rectangular platforms, and four platform guide sleeves and four pre-top platform guide sleeves are provided, respectively corresponding to the four corners of the lifting platform.

[0008] The hydraulic high-pressure filter element replacement device has a travel wheel installed at the bottom of the wheeled mobile platform, and an operating handle installed at one end of the wheeled mobile platform.

[0009] The utility model utilizes a wheeled mobile platform to carry and transport the filter element, utilizes a lifting jack to lift the filter element, and rotates the nut through a clamping plate with a rotating handle, which greatly reduces the difficulty of replacing the filter element. The use of this device can reduce the labor intensity of workers, improve the efficiency of filter element replacement, reduce equipment downtime for maintenance, and eliminate safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a top view of the utility model (excluding the wheeled mobile platform).

[0013] The numbers in the figure are as follows: 1. Wheeled mobile platform, 2. Lifting platform guide sleeve, 3. Lifting jack, 4. Lifting platform, 5. Pre-jacking platform guide sleeve, 6. Spring, 7. Bearing, 8. Clamp, 9. Pre-jacking platform, 10. Rotating handle, 11. Nut slot. DETAILED DESCRIPTION

[0014] In response to the deficiencies in the prior art, the utility model provides a hydraulic high-pressure filter element replacement device, which can improve the efficiency of high-pressure filter element replacement, reduce workers' labor intensity, shorten equipment downtime and maintenance time, and is very safe to operate, thus avoiding damage to personnel and equipment.

[0015] See Figure 1 and Figure 2 The utility model mainly includes a wheeled mobile platform 1, a platform guide sleeve 2, a lifting jack 3, a lifting platform 4, a pre-jacking platform guide sleeve 5, a spring 6, a bearing 7, a clamping plate 8, and a pre-jacking platform 9, wherein the platform guide sleeve 2, the lifting jack 3, the lifting platform 4, the pre-jacking platform guide sleeve 5, and the spring 6 constitute an elastic lifting device for lifting the pre-jacking platform 9 upward.

[0016] A wheeled mobile platform 1 is placed on the ground, with running wheels installed at the bottom and an operating handle installed at one end. A rectangular lifting platform 4 is located above the wheeled mobile platform 1. Four vertical platform guide sleeves 2 are fixed to the top of the wheeled mobile platform 1. The four platform guide sleeves 2 correspond to the four corners of the lifting platform 4 respectively. Four vertical lifting guide rods are fixed to the bottom of the lifting platform 4. The lower end of each lifting guide rod slides into a platform guide sleeve 2. The platform guide sleeve 2 cooperates with the lifting guide rod to keep the lifting platform 4 horizontal during the lifting process. A lifting jack 3 is placed on the wheeled mobile platform 1, with the top rod of the lifting jack 3 pressed against the middle of the lifting platform 4. The function of the lifting jack 3 is to drive the lifting platform 4 up or down. The pre-lifting platform 9 is a rectangular platform of the same shape as the lifting platform 4. The pre-lifting platform 9 is located above the lifting platform 4 and is connected to the lifting platform 4 via a spring 6. A vertical pre-lifting platform guide sleeve 5 is fixed to the upper portion of each corner of the lifting platform 4. A vertical slide bar that matches each pre-lifting platform guide sleeve 5 is fixed to the bottom of the pre-lifting platform 9. The lower end of the vertical slide bar slides into the corresponding pre-lifting platform guide sleeve 5. The pre-lifting platform guide sleeve 5 cooperates with the vertical slide bar to keep the pre-lifting platform 9 horizontal during the lifting process. The card plate 8 is a circular plate placed horizontally on the upper portion of the pre-lifting platform 9. The bottom of the card plate 8 is rotatably connected to the pre-lifting platform 9 via a bearing 7. A nut slot 11 that matches the nut at the lower end of the filter element fixing bolt of the high-pressure filter cartridge is provided in the middle of the card plate 8. Symmetrical rotary handles 10 are provided on both sides of the card plate 8.

[0017] The method of using the present utility model is as follows: when replacing the high-pressure filter element, first use the wheeled mobile platform 1 to transport the new filter element to the bottom of the high-pressure filter where the filter element needs to be replaced, remove the new filter element from the wheeled mobile platform 1, and lift the lifting platform 4 to a certain height through the lifting jack 3 so that the clamping plate 8 contacts the bottom of the filter cartridge, and then fine-tune the position of the wheeled mobile platform 1 so that the nut at the lower end of the filter element fixing bolt of the high-pressure filter cartridge enters the nut clamping groove 11 in the middle of the clamping plate 8, and then continue to lift the lifting platform 4 through the lifting jack 3 to compress the spring 6. Relying on the elastic force of the spring 6, the clamping plate 8 applies an upward lifting force to the lower end cover, thereby reducing the load on the filter element fixing bolt and nut, making the nut easy to disassemble, and at the same time making the nut clamping groove 11 in the middle of the clamping plate 8 more firmly clamp the nut at the lower end of the filter element fixing bolt. Then turn the rotating handle 10 by hand to rotate the card plate 8 and the nut at the lower end of the filter element fixing bolt (the lower end cover and the old filter element can rotate synchronously with the card plate 8). When the filter element fixing bolt is separated from the nut at its lower end, the lower end cover and filter element of the high-pressure filter cartridge fall onto the card plate 8. Finally, operate the jacking jack 3 to lower the lifting platform 4, and the old filter element can be pulled out from the bottom of the filter cartridge. When reinstalling a new filter element, remove the old filter element from the wheeled mobile platform 1 and place the new filter element on the lower end cover on the card plate 8. At this time, the wheeled mobile platform 1 is still in the position when the old filter element was removed, and the nut is still in the nut slot 11 in the middle of the card plate 8. The nut is exactly opposite to the filter element fixing bolt, eliminating the centering link. The lifting platform 4 is lifted to a certain height by the lifting jack 3, so that the new filter element enters the filter cartridge and the nut is in reliable contact with the filter element fixing bolt (the spring 6 is compressed). Then, turn the rotating handle 10 by hand to rotate the card plate 8 and the nut together, connecting the lower end cover and the filter cartridge together, thereby completing the operation of replacing the high-pressure filter element.

[0018] Beneficial effects of the utility model:

[0019] 1. The filter element is carried and transported by a wheeled mobile platform, and the filter element is lifted by a lifting jack. At the same time, the nut is rotated by a card plate with a rotating handle, which greatly reduces the difficulty of replacing the filter element. The use of this device can save manpower and time, reduce the labor intensity of workers, and shorten the equipment downtime for maintenance.

[0020] 2. It can prevent the filter element from falling and causing personal injury, improve operation safety and eliminate safety risks.

[0021] 3. The elastic force of the spring 6 reduces the load on the bolts and nuts that fix the filter element, thereby preventing the threads of the bolts and nuts from being damaged and extending the service life of the bolts and nuts.

Claims

1. A hydraulic high-pressure filter element replacement device, characterized in that: The invention comprises a wheeled mobile platform (1), an elastic lifting device, a bearing (7), a card plate (8) and a pre-top platform (9), wherein the pre-top platform (9) is located above the wheeled mobile platform (1) and is connected to the wheeled mobile platform (1) through the elastic lifting device, the card plate (8) is a circular plate horizontally placed on the upper part of the pre-top platform (9), the bottom of the card plate (8) is rotatably connected to the pre-top platform (9) through the bearing (7), the middle part of the card plate (8) is provided with a nut card slot (11) matching the nut at the lower end of the filter element fixing bolt of the high-pressure filter cartridge, and symmetrical rotating handles (10) are provided on both sides of the card plate (8).

2. A hydraulic high-pressure filter element replacement device according to claim 1, characterized in that: The elastic lifting device comprises a platform guide sleeve (2), a lifting jack (3), a lifting platform (4), a pre-top platform guide sleeve (5) and a spring (6); the lifting platform (4) is located between the wheeled mobile platform (1) and the pre-top platform (9) and is connected to the pre-top platform (9) through the spring (6); the lifting jack (3) is placed on the wheeled mobile platform (1), and the top rod of the lifting jack (3) is pushed against the middle of the lifting platform (4); the platform guide sleeve (2) is vertically fixed to the top of the wheeled mobile platform (1); a vertical lifting guide rod is fixed at the bottom of the lifting platform (4); the lower end of the lifting guide rod is slidably inserted into the platform guide sleeve (2); the pre-top platform guide sleeve (5) is vertically fixed to the upper part of the lifting platform (4); a vertical slide rod matching the pre-top platform guide sleeve (5) is fixed at the bottom of the pre-top platform (9); the lower end of the vertical slide rod is slidably inserted into the pre-top platform guide sleeve (5).

3. A hydraulic high-pressure filter element replacement device according to claim 2, characterized in that: The lifting platform (4) and the pre-lifting platform (9) are both rectangular platforms, and four platform guide sleeves (2) and four pre-lifting platform guide sleeves (5) are provided, respectively corresponding to the four corners of the lifting platform (4).

4. A hydraulic high-pressure filter element replacement device according to any one of claims 1 to 3, characterized in that: The bottom of the wheeled mobile platform (1) is equipped with running wheels, and one end of the wheeled mobile platform (1) is equipped with an operating handle.

Images