Filter cloth anti-warping device

Abstract

The utility model relates to a vacuum filter, in particular to an anti-warping device for a filter cloth, which is characterized in that a plurality of pairs of left vertical rods and right vertical rods which are linearly arrayed along the advancing direction of the filter cloth are respectively and fixedly arranged on a rack on the outer sides of two rubber belt skirts of a rubber belt type vacuum filter, and the upper ends of each pair of left vertical rod and right vertical rod are fixedly connected with a cross rod; two inclined supporting rods which are arranged in a splayed shape are fixedly arranged on the cross rod, a rotating roller is rotationally arranged at the outer end of each inclined supporting rod, and the rotating rollers are propped against the rubber belt skirt edge through the filter cloth. Compared with the prior art, the filter cloth is prevented from warping towards the middle, the smoothness of the filter cloth is kept, filtrate leakage can be reduced, and therefore the filtering efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a vacuum filter, specifically a filter cloth anti-warping device. Background Technology

[0002] like Figure 1 As shown, during operation, the left and right ends of the filter cloth 102 at the belt skirt 101 of the rubber belt vacuum filter 100 will warp towards the middle. This warping not only reduces filtration efficiency but may also cause filtrate leakage, affecting product quality and potentially damaging the equipment, increasing maintenance costs and downtime.

[0003] Existing rubber belt vacuum filters 100 typically achieve tension balance at both ends of the filter cloth by using rotating flattening rollers, but this cannot prevent the filter cloth 102 from warping towards the middle at both ends. Utility Model Content

[0004] To solve the technical problem of filter cloth warping towards the center, this utility model discloses a filter cloth anti-warping device, the technical solution of which is as follows:

[0005] A filter cloth anti-warping device is characterized in that multiple pairs of left and right uprights arranged in a straight line along the travel direction of the filter cloth are fixed on the frame outside the two rubber belt skirts of the rubber belt vacuum filter. A horizontal bar is fixed to the upper end of each pair of left and right uprights. Two diagonal braces arranged in a figure-eight shape are fixed on the horizontal bar. A rotating roller is rotated at the outer end of the diagonal brace, and the rotating roller abuts against the rubber belt skirt through the filter cloth.

[0006] Furthermore, the roller is an elastic roller.

[0007] Furthermore, the rotating roller is a steel roller covered with an elastic rubber ring.

[0008] Furthermore, knurled textures are formed on the circumferential surface of the roller.

[0009] Furthermore, a first elongated hole is made near the left and right ends of the crossbar, and a second elongated hole is made on the diagonal brace along its length. A first fastening screw passes through the first and second elongated holes to adjustably fix the diagonal brace to the crossbar.

[0010] Furthermore, after loosening the first fastening screw, the angle between the diagonal brace and the crossbar and the distance between the rotating roller and the edge of the tape can be adjusted. After adjustment, the first fastening screw is tightened.

[0011] Furthermore, the rotating roller is mounted on the outer end of the diagonal brace via a three-degree-of-freedom mechanism. This three-degree-of-freedom mechanism includes a first rotating shaft, a second rotating shaft, and a third rotating shaft. The first rotating shaft is axial in the X direction, with a first connecting member fixed to its lower end and a first nut screwed to its upper end. The first connecting member can rotate relative to the diagonal brace in the YZ plane and can be locked or released. The second rotating shaft is axial in the Y direction, with a gap passing through the second connecting member and the first connecting member. A nail head is fixed to its rear end, and a second nut is screwed to its front end. The second connecting member can swing relative to the first connecting member in the XY plane and can be locked or released. The third rotating shaft is axial in the Z direction, with a gap passing through the third connecting member and the second connecting member. A nail head is fixed to its left end, and a third nut is screwed to its right end. The third connecting member can swing relative to the second connecting member in the XZ plane and can be locked or released. The rotating roller is mounted on the third connecting member.

[0012] Furthermore, guide grooves are respectively opened on the two wing plates of the third connector along the X direction, and sliders are slidably engaged with the guide grooves. A spring is installed in the guide groove, one end of the spring abuts against the upper end of the guide groove, and the other end abuts against the upper end of the slider. A fourth rotating shaft is fixed on the two sliders, and the rotating roller is rotated on the fourth rotating shaft.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are:

[0014] 1. Improve filtration efficiency: By preventing the filter cloth from warping in the middle and maintaining its flatness, filtrate leakage can be reduced, thereby improving filtration efficiency.

[0015] 2. Reduce filtrate leakage: Filter cloth warping is one of the main causes of filtrate leakage. This device reduces the risk of filtrate leakage by keeping the filter cloth flat, which helps maintain a clean filtration environment and improves the quality of the filtrate.

[0016] 3. Reduced maintenance costs: Since filter cloth warping can lead to equipment damage and increased downtime, this device reduces equipment maintenance costs and downtime by minimizing filter cloth warping, thereby improving equipment operating efficiency.

[0017] 4. Enhanced equipment stability: Filter cloth warping may cause unstable operation of the filter. This device enhances equipment stability and reduces equipment failures caused by filter cloth warping by keeping the filter cloth flat.

[0018] 5. Simple structure, easy to install and maintain: This device is simply designed and installed on the frame of the rubber belt vacuum filter, without taking up extra space. It is also easy to maintain and can achieve the function of preventing filter cloth warping without complicated operations.

[0019] 6. Improved production efficiency: By reducing problems caused by filter cloth warping, the equipment operates more stably, reducing production interruptions due to filter cloth issues, thereby improving overall production efficiency.

[0020] 7. High adaptability: This device is suitable for various types of rubber belt vacuum filters, has wide applicability, and can be adjusted and optimized according to different models.

[0021] In summary, the filter cloth anti-warping device of this utility model, through its unique design, can effectively solve the problem of filter cloth warping in the prior art, and provides an effective solution for the stable operation and efficiency improvement of vacuum filters. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an existing rubber belt vacuum filter.

[0023] Figure 2 This is a schematic diagram of the filter cloth anti-warping device of Example 1 installed on a rubber belt vacuum filter.

[0024] Figure 3 This is a schematic diagram of the anti-warping device for filter cloth in Example 2.

[0025] Figure 4 yes Figure 3 A structural diagram from another perspective.

[0026] Figure 5 yes Figure 4 A magnified view of the area within the dashed frame. Detailed Implementation

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1, such as Figure 2 The illustrated filter cloth anti-warping device comprises multiple pairs of left uprights 104 and right uprights 105 arranged in a straight line along the travel direction of the filter cloth 102, fixed on the frame 103 outside the two rubber belt skirts 101 of the rubber belt vacuum filter 100. A crossbar 106 is fixed to the upper end of each pair of left uprights 104 and right uprights 105. Two diagonal braces 1 arranged in a V-shape are fixed to the crossbar 106. A rotating roller 2 is mounted on the outer end of each diagonal brace 1, and the rotating roller 2 abuts against the rubber belt skirt 101 across the filter cloth 102. First elongated holes 1061 are respectively opened at the left and right ends of the crossbar 106 along the left-right direction. A second elongated hole 11 is opened along the length of each diagonal brace 1. A first fastening screw passes through the first elongated hole 1061 and the second elongated hole 11 to adjustably fix the diagonal brace 1 to the crossbar 106. After loosening the first fastening screw, the angle between the diagonal brace 1 and the crossbar 106 and the distance between the roller 2 and the tape skirt 101 can be adjusted. After adjustment, tighten the first fastening screw.

[0031] The horizontal bar 106 has first elongated holes 1061 at both ends along the left and right directions, and the diagonal brace 1 has a second elongated hole 11 along its length. This design allows the fastening screws to move within the elongated holes, thereby adjusting the angle between the diagonal brace 1 and the horizontal bar 106, as well as the distance between the roller 2 and the tape skirt 101.

[0032] The first fastening screw passes through the first elongated hole 1061 and the second elongated hole 11 to adjustably fix the diagonal brace 1 to the crossbar 106. By loosening and tightening the first fastening screw, the position of the diagonal brace 1 can be adjusted, thereby changing its angle with the crossbar 106 and the distance between the roller 2 and the tape skirt 101.

[0033] After loosening the first fastening screw, the position of the diagonal brace 1 can be manually adjusted to change its angle with the crossbar 106, as well as the distance between the roller 2 and the belt skirt 101. This fine-tuning helps to accommodate different filter cloth tensions and warping conditions, ensuring that the filter cloth rests flat against the belt skirt.

[0034] After adjusting to the appropriate position, tighten the first fastening screw to secure the position of the diagonal brace 1, maintaining the required angle and distance. This ensures that the filter cloth maintains the correct position during filtration, preventing warping.

[0035] This adjustment mechanism is designed similarly to adjustable supports or connectors used in some mechanical adjustment devices, which achieve precise adjustment by sliding through elongated holes and being fixed in specific positions. In this way, the filter cloth anti-warping device can adapt to different working conditions, improving filtration efficiency and equipment stability.

[0036] In another preferred embodiment, the roller 2 is an elastic roller. Designing the roller 2 as an elastic roller means that it may be made of an elastic material (such as rubber, polyurethane, or other elastomers) or contain elastic elements in its internal structure. An elastic roller can absorb some vibration and impact, reducing damage to the filter cloth and belt skirts. An elastic roller can better accommodate unevenness and minor alignment errors in the filter cloth, maintaining constant pressure and preventing excessive compression or uneven tension of the filter cloth.

[0037] In another preferred embodiment, the circumferential surface of the roller 2 is knurled. The knurled texture on the outer surface of the roller 2 is a common surface treatment used to increase the coefficient of friction. The knurling increases the friction between the roller and the filter cloth, preventing the filter cloth from slipping on the roller and ensuring stable operation. The texture design also reduces the direct contact area between the filter cloth and the roller, reducing wear and protecting the filter cloth.

[0038] In another preferred embodiment, the rotating roller 2 is a steel roller covered with an elastic rubber ring. The rotating roller 2 consists of a steel core and is covered with an elastic rubber ring, such as rubber or other elastic material. The steel roller provides the necessary strength and rigidity, while the outer elastic rubber ring provides cushioning. This also better accommodates the unevenness of the filter cloth and minor alignment errors, maintaining constant pressure and preventing excessive compression or uneven tension of the filter cloth.

[0039] Example 2, as Figure 3-5As shown, similar to Embodiment 1, multiple pairs of left uprights 104 and right uprights 105 are fixedly mounted on the frame 103 outside the two rubber belt skirts 101 of the rubber belt vacuum filter 100, arranged in a linear array along the travel direction of the filter cloth 102. A crossbar 106 is fixedly connected to the upper end of each pair of left uprights 104 and right uprights 105. Two diagonal braces 1 arranged in a figure-eight pattern are fixedly mounted on the crossbar 106. The difference is that the rotating roller 2 is rotatably mounted on the outer end of the diagonal braces 1 via a three-degree-of-freedom mechanism 3. The three-degree-of-freedom mechanism 3 includes a first rotating shaft 31, a second rotating shaft 32, and a third rotating shaft 33. The first rotating shaft 31 has an axial direction of X, a first connecting piece 34 fixedly connected to its lower end, and a first nut 35 screwed to its upper end. The connecting member 34 can rotate relative to the diagonal brace 1 in the YZ plane and can be locked or released; the second rotating shaft 32 is axial in the Y direction, with a gap passing through the second connecting member 37 and the first connecting member 34, a nail head is fixed to the rear end, and a second nut 36 is screwed to the front end; the second connecting member 37 can swing relative to the first connecting member 34 in the XY plane and can be locked or released; the third rotating shaft 33 is axial in the Z direction, with a gap passing through the third connecting member 38 and the second connecting member 37, a nail head is fixed to the left end, and a third nut 39 is screwed to the right end; the third connecting member 38 can swing relative to the second connecting member 37 in the XZ plane and can be locked or released; the rotating roller 2 is mounted on the third connecting member 38.

[0040] Example 2 describes a filter cloth anti-warping device with a three-degree-of-freedom mechanism 3, which allows the roller 2 to be adjusted in three different directions (X, Y, and Z axes). The working principle and advantages of the three-degree-of-freedom mechanism 3 are as follows:

[0041] Design of a three-degree-of-freedom mechanism:

[0042] First pivot 31 (X direction): Allows the first connector 34 to rotate relative to the diagonal brace 1 in the YZ plane, which means that the position or angle of the roller 2 in the horizontal plane (left and right) can be adjusted.

[0043] Second pivot 32 (Y direction): Allows the second connector 37 to swing relative to the first connector 34 in the XY plane, which allows adjustment of the position or angle of the roller 2 in the vertical plane (front and back).

[0044] Third rotating shaft 33 (Z direction): allows the third connector 38 to swing relative to the second connector 37 in the XZ plane, which allows adjustment of the distance (up and down) between the roller 2 and the filter cloth 102.

[0045] Adjustment and locking mechanisms:

[0046] Each shaft is equipped with a nut (first nut 35, second nut 36, third nut 39) to lock the connector after adjustment to the desired position, ensuring that the position of the roller 2 is fixed.

[0047] By loosening the corresponding nuts, the connecting parts can be released, and necessary adjustments can be made. After the adjustments are completed, the nuts can be tightened again to fix the position.

[0048] advantage:

[0049] Flexibility: The three-degree-of-freedom mechanism provides greater adjustment flexibility, allowing for precise adjustment of the position and angle of the roller 2 to accommodate different tensions and warping conditions of the filter cloth 102.

[0050] Precise control: The position of the roller 2 can be precisely controlled by independent adjustment in three axes, optimizing the contact between the filter cloth and the belt skirt 101, improving filtration efficiency and reducing filtrate leakage.

[0051] Adaptability: This device can adapt to different machine configurations and operating conditions, improving the versatility and adaptability of the filter cloth anti-warping device.

[0052] Easy maintenance: Because each connecting part can be adjusted and locked independently, it is more convenient to maintain and replace the roller 2.

[0053] In another preferred embodiment, guide grooves 381 are respectively formed on the two wing plates of the third connector 38 along the X direction, and sliders 310 are slidably engaged with the guide grooves 381. A spring 311 is installed in the guide groove 381, with one end of the spring 311 abutting the upper end of the guide groove 381 and the other end abutting the upper end of the slider 310. A fourth rotating shaft 312 is fixed on the two sliders 310, and the rotating roller 2 is rotated on the fourth rotating shaft 312.

[0054] The spring 311 installed within the guide groove 381 provides preload to the slider 310, ensuring good contact between the slider 310 and the guide groove 381 and reducing vibration and impact. The spring 311 also absorbs impacts and vibrations generated during machine operation, protecting the roller 2 and related components from damage. The spring 311 automatically adjusts the position of the slider 310 according to minor changes during machine operation, maintaining a constant contact pressure between the roller 2 and the filter cloth 102. This design allows the roller 2 to better adapt to the unevenness and minor alignment errors of the filter cloth 102, maintaining constant pressure and preventing excessive compression or uneven tension of the filter cloth. This preferred embodiment, by adding the guide groove 381, slider 310, and spring 311, improves the adjustment accuracy and stability of the filter cloth anti-warping device, while also enhancing the adaptability and durability of the device.

[0055] 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 filter cloth anti-warping device, characterized in that, Multiple pairs of left uprights (104) and right uprights (105) arranged in a straight line along the travel direction of the filter cloth (102) are fixed on the frame (103) outside the two rubber belt skirts (101) of the rubber belt vacuum filter (100). A crossbar (106) is fixed to the upper end of each pair of left uprights (104) and right uprights (105). Two diagonal braces (1) arranged in a figure-eight shape are fixed on the crossbar (106). A rotating roller (2) is rotated at the outer end of the diagonal brace (1). The rotating roller (2) abuts against the rubber belt skirt (101) through the filter cloth (102).

2. The filter cloth anti-warping device according to claim 1, characterized in that, The rotating roller (2) is an elastic roller.

3. The filter cloth anti-warping device according to claim 1, characterized in that, The rotating roller (2) is a steel roller covered with an elastic rubber ring.

4. The filter cloth anti-warping device according to claim 1, characterized in that, The circumferential surface of the roller (2) is provided with knurled texture.

5. The filter cloth anti-warping device according to claim 1, characterized in that, A first elongated hole (1061) is opened at the left and right ends of the crossbar (106) along the left and right directions, and a second elongated hole (11) is opened on the diagonal brace (1) along its length. A first fastening screw passes through the first elongated hole (1061) and the second elongated hole (11) to adjustably fix the diagonal brace (1) on the crossbar (106).

6. The filter cloth anti-warping device according to claim 5, characterized in that, After loosening the first fastening screw, the angle between the diagonal brace (1) and the crossbar (106) and the distance between the roller (2) and the tape skirt (101) can be adjusted. After adjustment, tighten the first fastening screw.

7. The filter cloth anti-warping device according to claim 1, characterized in that, The roller (2) is mounted on the outer end of the diagonal brace (1) via a three-degree-of-freedom mechanism (3). The three-degree-of-freedom mechanism (3) includes a first rotating shaft (31), a second rotating shaft (32), and a third rotating shaft (33). The first rotating shaft (31) is axial in the X direction, with a first connecting piece (34) fixed to its lower end and a first nut (35) screwed to its upper end. The first connecting piece (34) can rotate relative to the diagonal brace (1) in the YZ plane and can be locked or released. The second rotating shaft (32) is axial in the Y direction, with a gap passing through the second connecting piece (37) and the first connecting piece. (34), the rear end is fixed with a nail head, the front end is screwed with a second nut (36), the second connector (37) can swing in the XY plane relative to the first connector (34) and can be locked or loosened; the axis of the third rotating shaft (33) is Z direction, the gap passes through the third connector (38) and the second connector (37), the left end is fixed with a nail head, the right end is screwed with a third nut (39), the third connector (38) can swing in the XZ plane relative to the second connector (37) and can be locked or loosened; the rotating roller (2) is mounted on the third connector (38).

8. The filter cloth anti-warping device according to claim 7, characterized in that, The two wing plates of the third connector (38) are respectively provided with guide grooves (381) along the X direction, and sliders (310) are slidably engaged with the guide grooves (381). A spring (311) is installed in the guide groove (381). One end of the spring (311) abuts against the upper end of the guide groove (381) and the other end abuts against the upper end of the slider (310). A fourth rotating shaft (312) is fixed on the two sliders (310), and the rotating roller (2) is rotated on the fourth rotating shaft (312).

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