Vacuum box lifting device driven by air cylinder

Abstract

The utility model relates to the technical field of vacuum belt filters, in particular to a vacuum box lifting device driven by an air cylinder, which comprises a rack and is different from the prior art that a lifting frame and a cylinder body of the air cylinder are rotatably arranged on the rack, a cylinder rod of the air cylinder is connected with the lifting frame, the lifting frame is connected with a vacuum box seat, and the vacuum box seat is connected with the vacuum box. And a vacuum box is fixedly arranged on the vacuum box seat. Compared with the prior art, the maintenance convenience is obviously improved, liquid is effectively prevented from being splashed into the air cylinder, the height space is saved, the lifting amplitude is larger and flexible, the structural design is reasonable, interference is avoided, and the installation stability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of vacuum belt filter technology, specifically to a cylinder-driven vacuum box lifting device. Background Technology

[0002] Vacuum belt filters are solid-liquid separation devices widely used in industries such as chemical, pharmaceutical, food, and environmental protection. One of their core components is the vacuum chamber. The vacuum chamber plays a crucial role in the filtration process, using negative pressure to adsorb liquid and achieve solid-liquid separation. However, with prolonged operation, impurities can easily accumulate or wear can occur inside the vacuum chamber, necessitating regular maintenance and inspection. To facilitate maintenance, existing vacuum belt filters are typically equipped with a vacuum chamber lifting device to raise the vacuum chamber from its working position to a height easily accessible for maintenance.

[0003] Traditional vacuum chamber lifting devices typically use a cylinder as a power source. The cylinder is vertically mounted directly below the vacuum chamber, and its extension and retraction movement achieves the vertical lifting of the vacuum chamber. However, this design has the following problems:

[0004] 1. Inconvenient maintenance: Because the cylinder is installed in the center of the equipment, the air circuit layout is relatively complex, making disassembly and maintenance of the air circuit very inconvenient, especially during equipment operation. Furthermore, the cylinder's installation location is close to the core working area of ​​the equipment, requiring the machine to be stopped and other components removed when disassembling the cylinder, increasing the difficulty and time cost of maintenance.

[0005] 2. Liquid splashing into the cylinder: During the filtration process, a large amount of liquid is generated inside the equipment, especially when filtering high-viscosity or corrosive liquids. This liquid can easily splash into the cylinder. Once inside, the liquid can corrode or damage the internal seals, affecting the cylinder's lifespan and potentially causing equipment malfunction.

[0006] 3. Increased vertical space occupation: Traditional lifting devices, due to the vertical installation of the cylinders, occupy a significant amount of vertical space, increasing the overall height of the equipment. This not only increases manufacturing costs but also limits the installation and use of the equipment in confined spaces.

[0007] 4. Limited Lifting Range: Due to the limitations of cylinder installation position and structure, traditional lifting devices have limited lifting range, which cannot meet the needs of certain special working conditions. For example, in some situations requiring a larger lifting range, traditional designs cannot provide sufficient lifting space. Utility Model Content

[0008] To address the aforementioned problems, this utility model provides a novel vacuum box lifting device that, while ensuring the lifting function, solves the problems of inconvenient maintenance, liquid splashing into the cylinder, and / or occupying vertical space caused by vertical cylinder installation.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A cylinder-driven vacuum box lifting device includes a frame. Unlike existing technologies, the frame has a lifting frame and a cylinder body mounted on it. The cylinder rod is connected to the lifting frame, which is connected to a vacuum box seat. The vacuum box seat has a vacuum box fixed to it. The frame includes two side uprights. A horizontal through rod is fixed in the middle of the two side uprights, and two short horizontal rods are fixed to their upper ends. A reserved space is formed between the free inner ends of the two short horizontal rods to prevent interference with other parts of the vacuum box during rotation. The free inner ends of the two short horizontal rods are fixed to the horizontal through rod via an inner upright. A cylinder adapter seat is welded to one of the side uprights below the horizontal through rod. Lifting frame hinge seats are fixed to the two inner uprights and the horizontal through rod near the cylinder adapter seat.

[0011] Furthermore, the lifting frame hinge includes a plate body fixedly connected to the horizontal through rod or the inner upright rod. The plate body has an upward-facing lower groove. The plate body is fixedly connected to the lifting frame clamping plate by fasteners. The lifting frame clamping plate has a downward-facing upper groove. The lower groove and the upper groove are opposite each other to form a circular bearing that rotates with the shaft on the lifting frame.

[0012] Furthermore, the bottom plate of the cylinder adapter seat has a square groove to increase the welding length with the side support.

[0013] Furthermore, the lifting frame includes two longitudinal rods, the front ends of the two longitudinal rods are fixedly connected by a fixing rod, the rear ends of the two longitudinal rods are connected to the vacuum box seat, and the middle parts of the two longitudinal rods are respectively fixedly connected to cantilever-shaped rotating shafts, wherein the rotating shaft on the side closer to the cylinder is extended and fixedly connected to one end of the transmission plate, and the other end of the transmission plate is rotatably connected to the cylinder rod of the cylinder.

[0014] Furthermore, two lifting frame upright plates are welded to the rear ends of the two longitudinal rods respectively, and lifting frame pivot pins are fixed to the two lifting frame upright plates. The vacuum box seat is connected to the lifting frame through the two lifting frame pivot pins.

[0015] Furthermore, multiple counterweights are installed at both ends of the fixing rod; the number of counterweights is adjusted according to the speed of the cylinder.

[0016] Furthermore, the longitudinal rod is formed by two rods with an obtuse angle being fixed together, resulting in a structure that is high at the center and low on both sides to prevent interference between its two ends and other components during the lifting process.

[0017] Furthermore, the lower end of the cylinder body is fixedly connected to the lower cylinder pivot pin, which is rotatably connected to the cylinder adapter seat; the upper end of the cylinder rod is fixedly connected to the Y-shaped connector, and the upper cylinder pivot pin is fixedly connected to the Y-shaped connector; the transmission plate is rotatably connected to the cylinder rod through the upper cylinder pivot pin.

[0018] Furthermore, the vacuum box base includes an angle iron, on which a box base upright plate is welded between two lifting frame upright plates. A hinge hole is opened on the box base upright plate, and the hinge hole is connected to the lifting frame pivot pin.

[0019] Compared with the prior art, the beneficial technical effects of this utility model are mainly reflected in the following aspects:

[0020] 1. Significantly improved ease of maintenance:

[0021] This invention avoids the maintenance inconvenience caused by the traditional design where the cylinder is vertically installed in the center of the equipment, by mounting the cylinder laterally and using a rotating joint connection. The cylinder's installation position is far from the core working area of ​​the equipment, the air circuit layout is simpler, and disassembly and maintenance do not require stopping the machine or removing other parts, significantly reducing maintenance difficulty and time costs.

[0022] 2. Effectively prevents liquid from splashing into the cylinder:

[0023] Because the cylinder is mounted on its side and the lifting frame is designed to keep it away from the liquid splash area generated during the filtration process, liquid is less likely to splash into the cylinder. This effectively avoids damage to the internal seals of the cylinder due to liquid corrosion, extends the cylinder's service life, and improves the reliability of the equipment.

[0024] 3. Saves height space:

[0025] This invention optimizes the installation structure of the lifting frame and cylinder, avoiding the problem of traditional designs where vertical cylinder installation occupies a large amount of vertical space. The overall height of the equipment is reduced, which not only lowers manufacturing costs but also makes the equipment more suitable for installation and use in limited spaces.

[0026] 4. Larger and more flexible lifting range:

[0027] The lifting frame of this invention adopts a structural design with a high center of rotation and low sides. By adjusting the counterweights, a greater lifting range can be achieved to meet the needs of special working conditions. Furthermore, the number of counterweights can be adjusted according to the cylinder lifting speed, further optimizing the stability and controllability of the lifting process.

[0028] 5. The structural design is reasonable and avoids interference:

[0029] The rotating shaft of the lifting frame is designed with a disconnect mechanism in the middle, leaving sufficient space to prevent interference with other parts of the vacuum box during rotation. Furthermore, the longitudinal rods feature an obtuse angle design, further avoiding interference with other components during lifting and ensuring stable operation of the equipment.

[0030] 6. Enhanced installation stability:

[0031] The base plate of the cylinder adapter has a square groove, which increases the welding length with the side upright, improves the stability of the cylinder installation, and reduces the risk of vibration and loosening during equipment operation.

[0032] In summary, this utility model, through its innovative structural design, effectively solves the problems of inconvenient maintenance, liquid splashing into the cylinder, and occupying height space that exist in traditional vacuum box lifting devices. At the same time, it improves the lifting range, stability, and service life of the equipment, demonstrating significant technological progress and practical value. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0034] Figure 2 This is a schematic diagram of the frame structure of this utility model.

[0035] Figure 3 This is a schematic diagram of the structure of the lifting frame hinge seat of this utility model.

[0036] Figure 4 This is a structural schematic diagram of the lifting frame of this utility model.

[0037] Figure 5 This is a schematic diagram of the structure of the cylinder of this utility model.

[0038] Figure 6 This is a schematic diagram of the structure of the vacuum box holder of this utility model.

[0039] Figure 7 This is a schematic diagram of the initial state of the vacuum box holder of this utility model.

[0040] Figure 8 This is a schematic diagram of the vacuum box base of this utility model after it has been raised. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 scope of protection of the present utility model.

[0042] Please see Figures 1-6 The illustrated vacuum box lifting device driven by a cylinder includes a frame 1, on which a lifting frame 2 and a cylinder body 31 of a cylinder 3 are mounted. The cylinder rod 34 of the cylinder 3 is connected to the lifting frame 2, and the lifting frame 2 is connected to a vacuum box seat 4. The vacuum box seat 4 is fixedly fitted with a vacuum box.

[0043] Specifically, the frame 1 includes two side uprights 11. A horizontal through rod 14 is fixed in the middle of the two side uprights 11, and two short horizontal rods 15 are fixed to the upper end. A reserved space is formed between the inner free ends of the two short horizontal rods 15 to prevent interference with other parts of the vacuum box during rotation. The inner free ends of the two short horizontal rods 15 are fixed to the horizontal through rod 14 through an inner upright 16. A cylinder adapter seat 13 is welded to one of the side uprights 11 below the horizontal through rod 14. Lifting frame hinge seats 12 are fixed to the two inner uprights 16 and the horizontal through rod 14 near the cylinder adapter seat 13.

[0044] The lifting frame 2 includes two longitudinal rods 21. The front ends of the two longitudinal rods 21 are fixedly connected by a fixing rod 24. The rear ends of the two longitudinal rods 21 are connected to the vacuum box seat 4. The middle parts of the two longitudinal rods 21 are respectively fixedly connected to cantilever-shaped rotating shafts 25. The rotating shaft 25 on the side closer to the cylinder 3 is extended and fixedly connected to one end of a transmission plate 26. The other end of the transmission plate 26 is rotatably connected to the cylinder rod of the cylinder 3.

[0045] The lower end of the cylinder body 31 is fixedly connected to the lower cylinder pivot pin 32, which is rotatably connected to the cylinder adapter seat 13; the upper end of the cylinder rod 34 is fixedly connected to the Y-shaped connector 35, and the upper cylinder pivot pin 33 is fixedly connected to the Y-shaped connector 35; the transmission plate 26 is rotatably connected to the cylinder rod 34 through the upper cylinder pivot pin 33.

[0046] The vacuum box base 4 includes an angle iron 41, on which a box base upright plate 42 is welded between two lifting frame upright plates 27. A hinge hole 43 is opened on the box base upright plate 42, and the hinge hole 43 is connected to the lifting frame pivot pin 23.

[0047] The working principle of this embodiment is as follows:

[0048] 1. Power Transmission: This device uses cylinder 3 as the power source. The lower end of cylinder body 31 of cylinder 3 is rotatably connected to cylinder adapter seat 13 welded to side upright 11 via cylinder lower pivot pin 32, realizing the rotatable connection of cylinder body 31 on frame 1. When cylinder 3 is working, cylinder rod 34 performs telescopic movement. The upper end of cylinder rod 34 is rotatably connected to transmission plate 26 via cylinder upper pivot pin 33 on Y-shaped connector 35. The other end of transmission plate 26 is fixed to the extension end of rotating shaft 25 near cylinder 3, and rotating shaft 25 is fixed to the middle of longitudinal rod 21, thus forming a power transmission path from cylinder rod 34 of cylinder 3 to lifting frame 2.

[0049] 2. Lifting Frame Operation: As the cylinder rod 34 of cylinder 3 extends and retracts, it drives the transmission plate 26 to move, which in turn causes the rotating shaft 25 to rotate. Since the rotating shaft 25 is fixed to the longitudinal rod 21, the entire lifting frame 2 rotates around the rotating shaft 25. The front ends of the two longitudinal rods 21 of the lifting frame 2 are fixedly connected by the fixing rod 24, and the rear ends are connected to the vacuum box seat 4. Thus, when the lifting frame 2 rotates, it will drive the vacuum box seat 4 and the vacuum box fixed on it to perform lifting and lowering actions.

[0050] 3. Structural Coordination Ensures Operation: A horizontal through rod 14 is fixed in the middle of the side upright 11 of the lifting frame 1, and a short horizontal rod 15 is fixed to the upper end. A reserved space is formed between the free ends of the short horizontal rod 15 on its inner side to prevent interference with other parts of the vacuum box during rotation. Simultaneously, the inner upright 16 fixes the free end of the short horizontal rod 15 to the horizontal through rod 14, providing a stable support structure for the rotation of the lifting frame 2. A cylinder adapter seat 13 is welded to the side upright 11 below the horizontal through rod 14, and lifting frame hinge seats 12 are fixed to the inner upright 16 and the horizontal through rod 14 near the cylinder adapter seat 13, respectively. These structures further enhance the stability and reliability of the entire device during operation. The vacuum box seat 4 is connected to the lifting frame 2 via a seat upright plate 42 welded to the angle iron 41, whose hinge hole 43 connects to the lifting frame pivot pin 23, ensuring stable lifting of the vacuum box.

[0051] In another preferred embodiment, the lifting frame hinge 12 includes a plate 121 fixedly connected to the horizontal rod 14 or the inner upright rod 16. The plate 121 has an upward-facing lower slot 122. The plate 121 is fixedly connected to a lifting frame clamping plate 123 by fasteners. The lifting frame clamping plate 123 has a downward-facing upper slot 124. The lower slot 122 and the upper slot 124 are opposite each other to form a circular bearing that rotates with the shaft 25 on the lifting frame 2. The lifting frame hinge 12 is composed of the plate 121 and the lifting frame clamping plate 123 connected by fasteners. This modular design allows for easy assembly. During assembly, the operator can first fix the plate 121 to the horizontal rod 14 or the inner upright rod 16, a relatively simple step as it only requires connecting the plate to the rod. Then, the lifting frame clamping plate 123 with the upper slot 124 is connected to the plate 121 by fasteners. Compared to a complex, monolithic hinge, this modular design provides more space for the installation and operation of each component, reducing assembly difficulty. The upward-facing lower slot 122 on the plate 121 and the downward-facing upper slot 124 on the lifting frame clamp 123 provide clear and precise positioning for assembling the rotating shaft 25. Workers simply place the rotating shaft 25 on the lower slot 122, align the lifting frame clamp 123, and fasten it in place, ensuring the upper and lower slots align to form a circular bearing that encloses the rotating shaft 25. This is then secured with fasteners. This slot structure significantly reduces the difficulty and time required to position the rotating shaft 25, improving assembly accuracy and efficiency. Using fasteners to connect the plate 121 and the lifting frame clamp 123 allows for easy adjustment, disassembly, or replacement of any parts of the hinge if slight misalignment is detected during assembly or if subsequent repairs or replacements are needed. Compared to non-removable connections such as welding, this detachable connection method offers significant convenience throughout the product's lifecycle, including assembly, debugging, and maintenance.

[0052] In another preferred embodiment, the bottom plate of the cylinder adapter 13 has a square groove to increase the welding length with the side upright 11. A larger welding area means a more secure connection between the cylinder adapter 13 and the side upright 11. During the movement of the lifting frame driven by the cylinder, it can better withstand forces from all directions, reducing problems such as loosening and displacement caused by unstable connections, extending the service life of the equipment, and ensuring the stable operation of the entire lifting device.

[0053] In another preferred embodiment, two lifting frame uprights 27 are welded to the rear ends of the two longitudinal rods 21, and lifting frame pivot pins 23 are fixedly connected to the two lifting frame uprights 27. The vacuum box seat 4 is connected to the lifting frame 2 via the two lifting frame pivot pins 23. This connection method makes the connection between the vacuum box seat 4 and the lifting frame 2 more stable and flexible. The two lifting frame uprights 27 increase the connection area and strength, and the lifting frame pivot pins 23 facilitate the rotational connection between the two, ensuring that the vacuum box can move smoothly with the lifting frame 2 during the lifting process, reducing shaking or jamming caused by unstable connection.

[0054] In another preferred embodiment, multiple counterweights 22 are installed at both ends of the fixed rod 24; the number of counterweights 22 is adjusted according to the speed of the cylinder 3. By installing counterweights 22 at both ends of the fixed rod 24, the force on the lifting frame during movement can be balanced, especially when the speed of the cylinder 3 changes, avoiding problems such as shaking and imbalance of the lifting frame caused by excessive or insufficient speed. Adjusting the number of counterweights according to the speed of the cylinder 3 enables more precise balance adjustment, ensuring the smooth operation of the entire vacuum box lifting device and improving the working efficiency and stability of the equipment.

[0055] In another preferred embodiment, the longitudinal rod 21 is formed by two rods with an obtuse angle, creating a structure that is high at the center and low on both sides to prevent interference between its ends and other components during lifting. This special shape design effectively prevents interference between the ends of the longitudinal rod 21 and other components during lifting. Due to the limited internal space and compact layout of the components, this shape of the longitudinal rod 21 better adapts to the spatial distribution of surrounding components, ensuring that the lifting device will not be damaged by collisions with other components during operation, thus improving the safety and reliability of the equipment.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cylinder-driven vacuum box lifting device comprising a frame (1), characterized in that The frame (1) is provided with a lifting frame (2) and a cylinder body (31) of a cylinder (3), a cylinder rod (34) of the cylinder (3) is connected with the lifting frame (2), the lifting frame (2) is connected with a vacuum box seat (4), and the vacuum box seat (4) is fixed with a vacuum box; The frame (1) comprises two edge vertical rods (11), a horizontal through rod (14) is fixed at the middle of the two edge vertical rods (11), and upper ends of the two edge vertical rods (11) are fixed with two horizontal short rods (15); a reserved space is formed between free inner ends of the two horizontal short rods (15) to prevent interference with other parts of the vacuum box during rotation; the free inner ends of the two horizontal short rods (15) are fixed with the horizontal through rod (14) through inner vertical rods (16); one of the edge vertical rods (11) below the horizontal through rod (14) is welded with a cylinder adapter seat (13), and lifting frame hinge seats (12) are fixed on the two inner vertical rods (16) and the horizontal through rod (14) near the cylinder adapter seat (13).

2. The air cylinder activated vacuum box lift of claim 1, wherein, The lifting frame hinge seat (12) comprises a plate body (121) fixed with the horizontal through rod (14) or the inner vertical rod (16), an upward opening lower notch (122) is formed in the plate body (121), the plate body (121) is fixed with a lifting frame clamping plate (123) through fasteners, a downward opening upper notch (124) is formed in the lifting frame clamping plate (123), and the lower notch (122) and the upper notch (124) are oppositely arranged to form a circular bearing adapted to a rotating shaft (25) on the lifting frame (2).

3. The air cylinder activated vacuum box lift of claim 1, wherein, A square groove is formed in a bottom plate of the cylinder adapter seat (13) to increase the welding length with the edge vertical rod (11).

4. The air cylinder activated vacuum box lift of claim 1, wherein, The lifting frame (2) comprises two longitudinal rods (21), front ends of the two longitudinal rods (21) are fixed with a fixing rod (24), rear ends of the two longitudinal rods (21) are connected with the vacuum box seat (4), and middle portions of the two longitudinal rods (21) are respectively fixed with cantilever-shaped rotating shafts (25); the rotating shaft (25) on the side close to the cylinder (3) is extended and fixed with one end of a transmission plate (26), and the other end of the transmission plate (26) is adapted to the cylinder rod of the cylinder (3).

5. The air cylinder activated vacuum box lift of claim 4, wherein, Rear ends of the two longitudinal rods (21) are respectively welded with two lifting frame vertical plates (27), the two lifting frame vertical plates (27) are fixed with lifting frame rotating pins (23), and the vacuum box seat (4) is adapted to the lifting frame (2) through the two lifting frame rotating pins (23).

6. The air cylinder activated vacuum box lift of claim 4, wherein, A plurality of counterweight blocks (22) are respectively arranged at two ends of the fixing rod (24); the number of the counterweight blocks (22) is adjusted according to the speed of the cylinder (3).

7. The air cylinder activated vacuum box lift of claim 4, wherein, The longitudinal rod (21) is fixed with two rod bodies with an obtuse angle to form a structure with a high center and low sides to prevent interference between the two ends of the longitudinal rod (21) and other parts during lifting.

8. The air cylinder activated vacuum box lift of claim 1, wherein, The lower end of the cylinder (31) is fixed with a lower cylinder rotating pin (32), which is connected with a cylinder adapter (13); the upper end of the cylinder rod (34) is fixed with a Y-shaped joint (35), the Y-shaped joint (35) is fixed with an upper cylinder rotating pin (33), and the transmission plate (26) is connected with the cylinder rod (34) through the upper cylinder rotating pin (33).

9. The air cylinder activated vacuum box lift of claim 1, wherein, The vacuum box seat (4) comprises an angle iron (41), two box seat vertical plates (42) are welded on the angle iron (41) correspondingly, and hinge holes (43) are formed in the box seat vertical plates (42) and connected with the lifting frame rotating pins (23).

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