A deviation correcting device for a belt filter

Abstract

The application relates to the technical field of deviation rectifying devices, in particular to a deviation rectifying device of a belt filter equipment. The application comprises a transmission structure, the transmission structure comprises a roller shaft, a first connecting rod and a second connecting rod, the roller shaft is horizontally arranged, the first connecting rod and the second connecting rod are symmetrically arranged at two ends of the roller shaft, one end of the first connecting rod is rotationally connected with one end of the roller shaft, one end of the second connecting rod is rotationally connected with the other end of the roller shaft, the other end of the first connecting rod and the other end of the second connecting rod are rotationally connected with limiting supports respectively, the limiting supports are symmetrically arranged obliquely below the two ends of the roller shaft, and a roller is arranged on the outer side of the shaft body of the roller shaft and used for supporting a filter cloth belt. The transmission structure and the limiting supports are shaped into a trapezoidal structure, when the filter cloth belt deviates, the trapezoidal structure is deformed, the filter cloth belt is stopped from continuing to deviate, and the application has the effects of simple structure and automatic deviation rectification.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of deviation rectifying devices, in particular to a deviation rectifying device of a belt filter. BACKGROUND

[0002] The belt filter, also known as a belt press filter, is a filter device that removes water from slurry by using the extrusion and shearing action between two endless filter cloth belts wound around a series of sequentially arranged support rollers of different sizes.

[0003] At present, the belt filter can form many different models due to the different arrangement and combination of the press rollers, has the advantages of simple structure, high dewatering efficiency, large processing capacity, low energy consumption, low noise, high automation degree, continuous operation, easy maintenance and the like, and the cost and operating cost are reduced by more than 30% than those of the plate-and-frame filter press, so the belt filter becomes the preferred equipment for urban sewage treatment.

[0004] However, the filter cloth belt in the belt filter device has the problem of deviation, in order to ensure the continuous operation of the filter cloth belt, an active deviation rectifying device is arranged in the device, the active deviation rectifying device controls the deviation movement of the support roller by using a deviation detection sensor and a deviation rectifying motor, and can actively rectify the filter cloth belt, but the active deviation rectifying device has the problems of complex structure, high cost and troublesome use and maintenance, and is a common failure point in actual operation. SUMMARY

[0005] In order to provide a self-deviation rectifying device with a simple structure, the application provides a deviation rectifying device of a belt filter.

[0006] The deviation rectifying device of the belt filter provided by the application adopts the following technical scheme:

[0007] The deviation rectifying device of the belt filter comprises a transmission structure, the transmission structure comprises a roller shaft, a first connecting rod and a second connecting rod, the roller shaft is horizontally arranged, the first connecting rod and the second connecting rod are symmetrically arranged at two ends of the roller shaft, one end of the first connecting rod is rotationally connected to one end of the roller shaft, and one end of the second connecting rod is rotationally connected to the other end of the roller shaft; the other end of the first connecting rod and the other end of the second connecting rod are respectively rotationally connected to limiting supports, and the limiting supports are symmetrically arranged obliquely below the two ends of the roller shaft; the connecting lines between the first connecting rod, the roller shaft, the second connecting rod and the two limiting supports form a trapezoidal structure; and a roller is arranged on the outer side of the shaft body of the roller shaft to support the filter cloth belt.

[0008] When the filter cloth belt deviates to the right, the filter cloth belt drives the roller to move to the right, the roller drives the roller shaft to move to the right, the roller shaft drives the second connecting rod to rotate, the first connecting rod is also deviated to the right under the drive of the roller shaft, the right end of the roller shaft is inclined upward, the left end of the roller shaft is inclined downward, the filter cloth belt is kept in the middle position of the roller, and the filter cloth belt stops moving to the right when reaching the balance point, thereby playing a role of automatically correcting the deviation of the filter cloth belt.

[0009] Optionally, the limiting support comprises a bottom plate, first and second side plates are formed by bending the two sides of the bottom plate, the first side plate is away from the roller shaft and higher than the second side plate, and first limiting rods are arranged on the sides away from the bottom plate of the first and second side plates.

[0010] By adopting the above technical scheme, the limiting support is arranged at the end of the first and second connecting rods away from the roller shaft, the rotation angle of the first and second connecting rods is limited, and the probability of large deviation of the filter cloth belt is reduced.

[0011] Optionally, the lengths of the first and second connecting rods are equal, and the swing range of the first and second connecting rods to the two sides is 10-20°.

[0012] By adopting the above technical scheme, the lengths of the first and second connecting rods are equal, the line connecting the first connecting rod, the roller shaft, the second connecting rod and the two limiting supports forms an isosceles trapezoidal structure when the filter cloth belt is not deviated, and the swing range of the first and second connecting rods to the two sides is 10-20°, so that the first and second connecting rods are limited within a small angle range.

[0013] Optionally, a connecting rod is rotatably connected to the middle of the first limiting rod on the first side plate, a second limiting rod is fixedly connected to the end of the connecting rod away from the first limiting rod, and the first limiting rod and the second limiting rod are arranged in parallel.

[0014] By adopting the above technical scheme, the second limiting rod is arranged on the first side plate, and the inclination angle of the second limiting rod can be adjusted through the connecting rod, so that the rotation range of the first and second connecting rods can be further adjusted.

[0015] Optionally, a plurality of bearings are arranged between the roller shaft and the roller.

[0016] By adopting the above technical scheme, the plurality of bearings arranged between the roller shaft and the roller can make the roller rotate more smoothly relative to the roller shaft, and further limit the relative position of the roller and the roller shaft.

[0017] Optionally, the outer surface of the roller is provided with an adhesive layer, and the width of the adhesive layer is greater than the width of the filter cloth belt.

[0018] By adopting the above technical scheme, the outer surface of the roller is provided with an adhesive layer, and the width of the adhesive layer is greater than the width of the filter cloth belt, so that the friction between the roller and the filter cloth belt can be further increased.

[0019] Optionally, the first limiting rod and the second limiting rod are sleeved with a buffer sleeve.

[0020] By adopting the above technical scheme, the first limiting rod and the second limiting rod are sleeved with a buffer sleeve, so that the first limiting rod and the second limiting rod can be protected when the first connecting rod and the second connecting rod rotate, thereby prolonging the service life.

[0021] Optionally, the outer surface of the two ends of the roller is symmetrically provided with a limiting ring.

[0022] By adopting the above technical scheme, the limiting ring is arranged on the roller, so that the limiting ring can limit the filter cloth belt when the filter cloth belt is greatly deviated, thereby reducing the probability that the filter cloth belt is separated from the roller.

[0023] Optionally, the opposite side of the limiting ring is provided with a limiting strip, and the limiting strip and the roller are provided with an alarm therebetween.

[0024] By adopting the above technical scheme, a cavity is formed among the limiting strip, the limiting ring and the roller, and the alarm in the cavity is triggered by the filter cloth belt when the filter cloth belt is greatly deviated, so that the alarm sounds to remind the operator that the filter cloth belt is greatly deviated.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. When the filter cloth belt deviates to the right side, the filter cloth belt drives the roller to also move to the right side, the roller drives the roller shaft to also move to the right side, the roller shaft drives the second connecting rod to rotate, and the first connecting rod is also deviated to the right side under the drive of the roller shaft, at this time, the right end of the roller shaft is inclined upward, the left end of the roller shaft is inclined downward, the filter cloth belt is kept in the middle position of the roller, the filter cloth belt stops moving to the right side, and the function of automatically correcting the deviation of the filter cloth belt is achieved.

[0027] 2. The limiting supports are arranged at the ends of the first connecting rod and the second connecting rod away from the roller shaft, respectively, so that the rotation angle of the first connecting rod and the second connecting rod is limited, and the probability that the filter cloth belt is greatly deviated is reduced.

[0028] 3. The limiting ring is arranged on the roller, so that the limiting ring can limit the filter cloth belt when the filter cloth belt is greatly deviated, thereby reducing the probability that the filter cloth belt is separated from the roller. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of the overall structure of the belt filter device in Embodiment 1 of the present application.

[0030] Figure 2 is a schematic view of the overall structure of the belt filter device in Embodiment 1 of the present application. Figure 1 is a partial enlarged view of part A in

[0031] Figure 3 is a schematic view of the overall structure of the belt filter device in Embodiment 1 of the present application.

[0032] Figure 4 is a schematic view of the overall structure of the belt filter device in Embodiment 1 of the present application. Figure 3 is a sectional view of A-A in

[0033] Figure 5 is a schematic view of the overall structure of the belt filter device in Embodiment 1 of the present application.

[0034] Figure 6 is a schematic view of the overall structure of the belt filter device in Embodiment 2 of the present application.

[0035] Figure 7 is a schematic view of the overall structure of the belt filter device in Embodiment 2 of the present application. Figure 6 is a sectional view of B-B in

[0036] Figure 8 is a schematic view of the overall structure of the belt filter device in Embodiment 2 of the present application. Figure 7 is a partial enlarged view of part B in

[0037] Reference signs: 1, device frame; 2, transmission structure; 21, roller shaft; 22, first connecting rod; 23, second connecting rod; 3, limiting support; 31, bottom plate; 311, hinged part; 32, first side plate; 33, second side plate; 34, first limiting rod; 321, connecting rod; 322, second limiting rod; 4, roller; 5, filter cloth belt; 6, bearing; 7, adhesive layer; 8, buffer sleeve; 9, limiting ring; 91, limiting strip; 100, cavity; 110, alarm. DETAILED DESCRIPTION

[0038] The present application will be further described below in conjunction with the accompanying drawings. Figure 1 to Figure 7 , the present application will be further described below in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] Reference Figure 1 and Figure 2The application discloses a deviation rectifying device of a belt filter device, which comprises a device rack 1 and a transmission structure 2, the transmission structure 2 comprises a roller shaft 21, a first connecting rod 22 and a second connecting rod 23, the roller shaft 21 is horizontally arranged and placed along the width direction of the device rack 1, the first connecting rod 22 and the second connecting rod 23 are symmetrically arranged at two ends of the roller shaft 21, one end of the first connecting rod 22 is hinged to one end of the roller shaft 21, one end of the second connecting rod 23 is hinged to the other end of the roller shaft 21, the other end of the first connecting rod 22 and the other end of the second connecting rod 23 are both inclined downward and are rotationally connected to a limiting support 3, the two limiting supports 3 are symmetrically arranged below the two ends of the roller shaft 21, and the two limiting supports 3 are symmetrically welded and fixed on the two sides of the width direction of the device rack 1, at this time, the connecting line among the first connecting rod 22, the roller shaft 21, the second connecting rod 23 and the two limiting supports 3 forms a trapezoidal structure. A filter cloth belt 5 is arranged along the length direction of the device rack 1, a roller 4 for supporting the filter cloth belt 5 is sleeved outside the shaft body of the roller shaft 21, the filter cloth belt 5 drives the roller 4 to rotate while moving, and the number of the deviation rectifying device is arranged according to the specific length of the device rack 1.

[0041] With reference to Figure 2 The limiting support 3 comprises a bottom plate 31, the bottom plate 31 is welded and fixed on the device rack 1, the bottom plate 31 is provided with a hinge part 311 for being hinged to the first connecting rod 22 and the second connecting rod 23, respectively, first side plates 32 and second side plates 33 are formed by bending the two sides of the bottom plate 31, the first side plates 32 and the second side plates 33 are parallel to each other, the first side plates 32 are away from the roller shaft 21, and the first side plates 32 are higher than the second side plates 33, the first side plates 32 and the second side plates 33 away from the bottom plate 31 are provided with first limiting rods 34, and the first side plates 32 and the second side plates 33 on the left and right sides of the roller shaft 21 are parallel to each other. When the filter cloth belt 5 deviates to the right side, the first connecting rod 22 and the second connecting rod 23 are driven to rotate, if the deviation distance of the filter cloth belt 5 is large, the first connecting rod 22 is abutted against the first limiting rod 34 on the second side plate 33 on the left side of the roller shaft 21, the second connecting rod 23 is abutted against the first limiting rod 34 on the first side plate 32 on the right side of the roller shaft 21, the first connecting rod 22 and the second connecting rod 23 are stopped from rotating, and the filter cloth belt 5 is stopped from deviating to the right side.

[0042] With reference to Figure 3 And Figure 4 The lengths of the first connecting rod 22 and the second connecting rod 23 are equal, in an initial state, i.e. when the filter cloth belt 5 has not started to deviate to the left and right sides, the connecting line among the first connecting rod 22, the roller shaft, the second connecting rod 23 and the two limiting supports 3 forms an isosceles trapezoidal structure, when the filter cloth belt 5 starts to deviate, the first connecting rod 22 and the second connecting rod 23 are driven to swing to the two sides by an angle of 10° to 20°, the first connecting rod 22 and the second connecting rod 23 can only rotate within a small angle range through the arrangement of the limiting support 3 and the first limiting rod 34.

[0043] The first connecting rod 22 and the roller shaft 21, the second connecting rod 23 and the roller shaft 21, the first connecting rod 22 and the limiting support 3, and the second connecting rod 23 and the limiting support 3 are all provided with damping members, and in the embodiment, the damping members are rubber pads.

[0044] Referring to Figure 4 and Figure 5 , the left side of the equipment rack 1 where the first connecting rod 22 is located is defined as the left side, and the right side of the equipment rack 1 where the second connecting rod 23 is located is defined as the right side. When the filter cloth belt 5 deviates to the right side of the equipment rack 1, the filter cloth belt 5 drives the roller 4 to move to the right side of the equipment rack 1 due to the static friction force between the roller 4 and the filter cloth belt 5. The roller 4 drives the roller shaft 21 to move to the right side, the roller shaft 21 drives the second connecting rod 23 to rotate, and the first connecting rod 22 is also deviated to the right side of the equipment rack 1 under the drive of the roller shaft 21. At this time, the right end of the roller shaft 21 is inclined upward, the left end of the roller shaft 21 is inclined downward, and the filter cloth belt 5 is kept in the middle position of the roller 4. When the horizontal component of the support force Fa provided by the roller 4 to the filter cloth belt 5 is greater than or equal to the force Fb that drives the filter cloth belt 5 to move to the right side, the filter cloth belt 5 stops moving to the right side, thereby playing a role of automatically correcting the deviation of the filter cloth belt 5. The direction of the support force Fa is perpendicular to the axis of the roller shaft 21. The same is true when the filter cloth belt 5 deviates to the left side of the equipment rack 1.

[0045] Referring to Figure 3 and Figure 4 , the length of the roller shaft 21 is greater than the length of the roller 4, the roller 4 is sleeved on the middle position of the roller shaft 21, two bearings 6 are arranged between the roller shaft 21 and the roller 4, the two bearings 6 are arranged at the two ends of the roller 4, the shaft body of the roller shaft 21 penetrates the inner ring of the bearing 6 and is fixedly connected, and the outer ring outer wall of the bearing 6 is tightly attached to the inner wall of the roller 4 and is fixed. By arranging the bearing 6, when the filter cloth belt 5 operates, the roller 4 is driven to rotate around the roller shaft 21, so that the roller 4 can rotate more smoothly.

[0046] Referring to Figure 4 , the axial length of the roller 4 is greater than the width of the filter cloth belt 5, the filter cloth belt 5 is arranged at the middle position of the roller 4, and the outer surface of the roller 4 is provided with an adhesive layer 7. In the embodiment, the material of the adhesive layer 7 is selected as EPDM, and the adhesive layer 7 covers the entire outer surface of the roller 4, that is, the width of the adhesive layer 7 is greater than the width of the filter cloth belt 5, so that the entire filter cloth belt 5 is within the width range of the adhesive layer 7. By arranging the adhesive layer 7, the friction force between the filter cloth belt 5 and the roller 4 in the axial direction is increased, so that the filter cloth belt 5 drives the roller 4 to rotate, and also plays a role of reducing the probability of left and right sliding of the filter cloth belt 5 relative to the roller 4.

[0047] The implementation principle of the embodiment of the present application is that when the filter cloth belt 5 deviates to the right during the operation of the filtering equipment, there is a friction force between the filter cloth belt 5 and the roller 4, the filter cloth belt 5 drives the roller 4 to move to the right of the equipment rack 1, the roller 4 drives the roller shaft 21 to move to the right, the roller shaft 21 drives the second connecting rod 23 to rotate, and the first connecting rod 22 is also deflected to the right of the equipment rack 1 under the drive of the roller shaft 21. At this time, the right end of the roller shaft 21 is inclined upward, the left end of the roller shaft 21 is inclined downward, and the filter cloth belt 5 is kept in the middle position of the roller 4. When the force balance in the width direction of the filter cloth belt 5 is reached, the filter cloth belt 5 stops moving to the right, thereby playing a role of automatically correcting the deviation of the filter cloth belt 5. When the filter cloth belt 5 deviates to the left of the equipment rack 1, the same principle applies.

[0048] The ends of the first connecting rod 22 and the second connecting rod 23 away from the roller shaft 21 are respectively hinged to the limiting supports 3, and the first limiting rods 34 are arranged on the limiting supports 3. By limiting the rotation angle of the first connecting rod 22 and the second connecting rod 23, the probability of excessive deviation of the filter cloth belt 5 is reduced.

[0049] Embodiment 2:

[0050] The difference between embodiment 2 and embodiment 1 is that:

[0051] With reference to Figure 6 and Figure 7 , the middle part of the first limiting rod 34 on the first side plate 32 is hingedly provided with a connecting rod 321, and the end of the connecting rod 321 away from the first limiting rod 34 is fixedly connected with a second limiting rod 322. The first limiting rod 34 and the second limiting rod 322 are parallel to each other. By arranging the connecting rod 321 and the second limiting rod 322, the rotation angle of the first connecting rod 22 and the second connecting rod 23 can be further limited, thereby playing a role of adjusting the rotation angle of the first connecting rod 22 and the second connecting rod 23. Before the filtering equipment is operated, by setting the rotation range of the first connecting rod 22 and the second connecting rod 23 to be limited, adjusting the inclination angle of the connecting rod 321 and fixing it, various situations can be more flexibly coped with.

[0052] With reference to Figure 7 and Figure 8 , the first limiting rod 34 and the second limiting rod 322 are sleeved with a buffer sleeve 8 made of soft rubber. When the first connecting rod 22 and the second connecting rod 23 rotate and abut against the first limiting rod 34 and the second limiting rod 322, the buffer sleeve 8 can play a role of protecting the first connecting rod 22 and the second connecting rod 23, thereby prolonging the service life.

[0053] With reference to Figure 7 and Figure 8The outer surface of both ends of the roller 4 is symmetrically provided with a limiting ring 9, and the inner ring of the limiting ring 9 is fixedly connected with the outer surface of the roller 4. By arranging the limiting ring 9, the probability of the filter cloth belt 5 being separated from the roller 4 can be reduced. The opposite side of the limiting ring 9 at both ends of the roller 4 is provided with a limiting strip 91, the limiting strip 91 is annular and is fixedly connected with the limiting ring 9, and a cavity 100 is formed among the limiting strip 91, the roller 4 and the limiting ring 9. An alarm 110 is arranged in the cavity 100. When the filter cloth belt 5 deviates too much, the side edge of the filter cloth belt 5 will slide into the cavity 100 and trigger the alarm 110 arranged in the cavity 100. The alarm 110 can issue a sound warning to the operator, the filter equipment can be adjusted, and the probability of accidents can be reduced.

[0054] The principle of the embodiment of the present application is that: by arranging the second limiting rod 322, the second limiting rod 322 is fixedly connected with the connecting rod 321, and the connecting rod 321 is hingedly connected with the first limiting rod 34. The inclination angle of the second limiting rod 322 can be adjusted. At this time, the second limiting rod 322 cooperates with the first limiting rod 34 on the second side plate 33 of the same limiting support 3 to jointly limit the rotation range of the first connecting rod 22 or the second connecting rod 23, so that the rotation range adjustment of the first connecting rod 22 and the second connecting rod 23 is more flexible.

[0055] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A belt filter device for correcting belt alignment, characterized in that, The transmission structure (2) includes a roller shaft (21), a first connecting rod (22) and a second connecting rod (23). The roller shaft (21) is horizontally arranged. The first connecting rod (22) and the second connecting rod (23) are symmetrically arranged at both ends of the roller shaft (21). One end of the first connecting rod (22) is rotatably connected to one end of the roller shaft (21), and one end of the second connecting rod (23) is rotatably connected to the other end of the roller shaft (21). The other end of the first connecting rod (22) and the other end of the second connecting rod (23) are respectively rotatably connected to a limiting support (3), and the limiting support (3) is symmetrically arranged at the lower ends of the roller shaft (21); The lines connecting the first connecting rod (22), the roller (21), the second connecting rod (23), and the two limiting supports (3) form a trapezoidal structure; The outer side of the roller shaft (21) is fitted with a roller (4) for supporting the filter cloth belt (5). The limiting support (3) includes a base plate (31). The base plate (31) has a first side plate (32) and a second side plate (33) formed by bending them on both sides. The first side plate (32) is away from the roller shaft (21) and is higher than the second side plate (33). A first limiting rod (34) is provided on the side of the first side plate (32) and the second side plate (33) away from the base plate (31). A connecting rod (321) is rotatably connected to the middle of the first limiting rod (34) on the first side plate (32). A second limiting rod (322) is fixedly connected to the end of the connecting rod (321) away from the first limiting rod (34). The first limiting rod (34) and the second limiting rod (322) are arranged parallel to each other.

2. The belt alignment device for a belt filter according to claim 1, characterized in that, The first link (22) and the second link (23) are of equal length, and the swing amplitude of the first link (22) and the second link (23) to both sides is 10° to 20°.

3. The belt alignment device for a belt filter according to claim 1, characterized in that, Several bearings (6) are provided between the roller (21) and the drum (4).

4. The belt alignment device for a belt filter according to claim 1, characterized in that, An adhesive layer (7) is provided on the outer surface of the roller (4), and the width of the adhesive layer (7) is greater than the width of the filter cloth belt (5).

5. The belt alignment device for a belt filter according to claim 1, characterized in that, The first limiting rod (34) and the second limiting rod (322) are fitted with buffer sleeves (8).

6. The belt alignment device for a belt filter according to claim 3, characterized in that, Limiting rings (9) are symmetrically arranged on the outer surfaces of both ends of the roller (4).

7. The belt alignment device for a belt filter according to claim 6, characterized in that, Limiting strips (91) are provided on opposite sides of the limiting ring (9), and an alarm (110) is provided between the limiting strip (91) and the roller (4).

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