Counterweight type discharging device

Abstract

The utility model relates to the field of discharging of vacuum filters, in particular to a counter weight type discharging device which comprises counter weight assemblies, a discharging frame and a scraper plate, the counter weight assemblies are arranged at the two ends of the scraper plate respectively, the scraper plate is detachably connected with the discharging frame, and the position of the scraper plate is adjustable relative to the discharging frame. The counterweight assembly is provided with a first counterweight rod, the first counterweight rod is sleeved with a second counterweight rod capable of moving along the first counterweight rod and locking the position, and the second counterweight rod is sleeved with a counterweight block capable of moving along the second counterweight rod and locking the position. The first balance weight rod penetrates through a supporting frame fixed to the machine frame and is detachably connected with connecting blocks at the two ends of the discharging frame, the balance weight pressure can be adjusted in a more accurate and wider range, the balance weight pressure in the operation process is kept unchanged, effective locking is conducted, and the separation effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of vacuum filter unloading, in particular to a counterweight type unloading device. Background Art

[0002] The vacuum filter is a continuous vacuum filtration device. Through the filtering effect of the filter cloth, the filtered filter cake follows the filter cloth and runs to the unloading end through the scraper plate of the unloading device to separate the filter cake from the filter cloth. When the distance between the scraper plate and the filter cloth is too large, it is easy to scrape the material uncleanly, and the residual filter residue adheres to the filter cloth, affecting the filtering effect of the filter cloth; when the distance between the scraper plate and the filter cloth is too small, the pressure of the scraper plate on the filter cloth is too large, and when the overlap position of the filter cloth runs to the scraper plate, it is easy to be scratched, reducing the service life of the filter cloth. With the long-term use of the equipment, the scraper plate will be normally worn, and the distance between the scraper plate and the filter cloth needs to be adjusted regularly.

[0003] China Utility Model Patent Announcement No. CN203342510U discloses a weight-type scraper device, including a scraper plate, a pressure plate, a scraper support, a scraper bracket and a weight, wherein there are two scraper supports, which are fixed on the frame respectively; the scraper bracket is connected between the two scraper supports, and one end of the scraper bracket is connected to the weight through a screw, and the other end of the scraper bracket is connected to the scraper plate. The above-mentioned public scheme adjusts the counterweight pressure by adjusting the position of the weights on both sides relative to the screw, so that the overlap of the filter cloth can pop out and rebound when passing through the scraper plate, which can further extend the service life of the filter cloth. However, the adjustable range of the counterweight pressure of the scraper plate on the filter cloth in the above scheme is limited by the displacement distance of the weight relative to the screw, and the adjustable range is small, which cannot better meet the different requirements of counterweight pressure of different models; and in the working process, in order to ensure the separation effect of the filter cake and the filter cloth, the adjusted counterweight pressure needs to be kept stable, and the position of the relevant counterweight components needs to be locked. The above-mentioned public scheme does not further disclose the technical solution for keeping the counterweight pressure stable. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a counterweight type unloading device.

[0005] Technical solution: To achieve the above-mentioned purpose, the utility model discloses a counterweight type unloading device, comprising a counterweight assembly, a unloading frame and a scraper plate, wherein the counterweight assembly is disposed at both ends of the scraper plate, the scraper plate is detachably connected to the unloading frame, and the position of the scraper plate relative to the unloading frame is adjustable; the counterweight assembly is provided with a first counterweight rod, the first counterweight rod is provided with a second counterweight rod which can be displaced along the rod and can be locked in position, the second counterweight rod is provided with a counterweight block which can be displaced along the rod and can be locked in position, the first counterweight rod passes through a support frame fixed on the frame and is detachably connected to the connecting blocks at both ends of the unloading frame.

[0006] Preferably, the second counterweight rod comprises a limit block and a connecting rod for connecting the counterweight block, the limit block is provided with a first through hole penetrating at a center position, and the first counterweight rod penetrates the first through hole.

[0007] Preferably, the outer surfaces of the first counterweight rod and the connecting rod are both smooth surfaces, the limit block is provided with a first threaded hole, the first threaded hole is engaged with a first set screw that locks the position of the limit block, and the first set screw is provided with a first anti-loosening nut to prevent loosening.

[0008] Preferably, a second through hole is provided at the center of the counterweight block, and a plurality of second threaded holes are provided in a direction perpendicular to the second through hole. The second threaded holes are engaged with second set screws for locking the position of the counterweight block, and the second set screws are provided with second anti-loosening nuts for preventing loosening.

[0009] Preferably, a plurality of groups of the second threaded holes are arranged in parallel or opposite to each other.

[0010] Preferably, the first counterweight rod is provided with a semi-threaded thread, a group of first locking nuts are respectively engaged with the semi-threaded threads at both ends of the limit block, and the connecting rod is provided with a full-threaded thread.

[0011] Preferably, a second through hole is provided at the center of the counterweight block, the connecting rod passes through the second through hole, and a group of second locking nuts are respectively engaged with the fully threaded threads at both ends of the counterweight block.

[0012] Preferably, the first counterweight rod is sleeved with a rotating shaft seat between the support frame and the discharge frame, and the scraper plate is provided with an oblong hole connected to the discharge frame, and the oblong hole is used to adjust the installation position of the scraper plate.

[0013] Preferably, the rotating shaft seat and the scraper plate are both made of non-metallic materials.

[0014] The beneficial effects of the utility model are:

[0015] 1. The counterweight pressure adjustment range of the counterweight assembly of this solution is wider. The second counterweight rod and the counterweight block are displaced along the first counterweight rod as a whole, and the counterweight pressure applied by the counterweight assembly to the scraper plate can be adjusted within a certain range. When the counterweight block is displaced along the second counterweight rod, the applied pressure can be further adjusted, so that the counterweight pressure adjustment range is wider and the counterweight pressure value adjustment is more accurate. It is suitable for use in different stages and different models of filters and has stronger versatility. After the counterweight pressure is determined, the position of the second counterweight rod relative to the first counterweight rod and the position of the counterweight block relative to the second counterweight rod are fixed through the action of the anti-loosening and locking components, avoiding the loosening and displacement of the counterweight caused by the vibration of the equipment, so that the counterweight pressure remains unchanged during the operation of the equipment, ensuring the separation effect of the filter cake and the filter cloth, and extending the service life of the filter cloth.

[0016] 2. The rotating shaft seat installed between the support frame and the unloading frame can make the rotation and adjustment of the first counterweight rod more flexible. The rotating shaft seat is made of non-metallic material, which can reduce the wear of the first counterweight rod during use and realize flexible rotation. Compared with conventional bearing components, it can be maintenance-free.

[0017] 3. After the scraper plate is connected to the discharge rack, the relative position of the scraper plate and the filter cloth can be further adjusted through the oblong hole setting on the scraper plate. The scraper plate is made of non-metallic material to prevent scratches on the filter cloth and extend the life of the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main view of the overall structure of the utility model;

[0019] Figure 2 It is a side view of the overall structure of the utility model;

[0020] Figure 3 This is the first embodiment of the locking of the counterweight block and the limit block in the utility model;

[0021] Figure 4 This is the second embodiment of the locking of the counterweight block and the limit block in the utility model;

[0022] Figure 5 This is the third embodiment of the locking of the counterweight block and the limit block in the utility model.

[0023] In the figure, 1, counterweight assembly; 2, support frame; 3, shaft seat; 4, connecting block; 5, unloading frame; 6, connecting rod; 7, limit block; 701, first set screw; 702, first anti-loosening nut; 703, first threaded hole; 704, first through hole; 8, first counterweight rod; 801, semi-threaded thread; 9, counterweight block; 901, second set screw; 902, second anti-loosening nut; 903, second threaded hole; 904, second through hole; 10, second counterweight rod; 11, scraper plate; 12, filter cloth; 13, first locking nut; 14, second locking nut; 15, frame; 16, oblong hole. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 To Attachment Figure 5 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0025] A counterweight type unloading device, such as Figure 1 — Figure 2 As shown, it includes a counterweight assembly 1, a discharge frame 5 and a scraper plate 11. A set of counterweight assemblies 1 are respectively provided at both ends of the scraper plate 11. The scraper plate 11 and the discharge frame 5 are detachably connected by bolt assembly. In order to facilitate the adjustment of the spacing between the scraper plate 11 and the filter cloth 12, the connecting bolt hole between the scraper plate 11 and the discharge frame 5 is an oblong hole 16. The counterweight assembly 1 is provided with a first counterweight rod 8 and a second counterweight rod 10. The first counterweight rod 8 of the counterweight assembly 1 passes through the support frame 2 fixed on the frame 15 and is detachably connected to the connecting blocks 4 at both ends of the discharge frame 5. The first counterweight rod 8 and the connecting block 4 can be connected by threads or by other detachable methods known to those skilled in the art such as flanges. The first counterweight rod 8 drives the discharge frame 5 to rotate, so that the gap between the scraper plate 11 and the filter cloth 12 and the counterweight pressure are changed. In order to facilitate the flexible rotation of the first counterweight rod 8, a rotating shaft seat 3 is provided between the support frame 2 and the unloading frame 5. The rotating shaft seat 3 is made of non-metallic materials, such as nylon, polytetrafluoroethylene, polyethylene and other polymer materials, which can reduce the friction loss during the rotation of the first counterweight rod 8 and realize flexible rotation without maintenance.

[0026] The second counterweight rod 10 includes a stopper 7 and a connecting rod 6. The stopper 7 is provided with a first through hole 704 at the center. The stopper 7 is sleeved on the first counterweight rod 8 through the first through hole 704 and can be displaced and locked along the first counterweight rod 8. The counterweight block 9 is provided with a second through hole 904 at the center. The counterweight block 9 is sleeved on the connecting rod 6 through the second through hole 904 and can be displaced and locked along the first counterweight rod 8. The second counterweight rod 10 can adjust the counterweight pressure of the scraper plate 11 on the filter cloth 12 within a certain range by displacing along the first counterweight rod 8. The displacement position of the counterweight block 9 relative to the connecting rod 6 is further adjusted. The counterweight pressure of the scraper plate 11 on the filter cloth 12 is adjusted in a larger range, and the counterweight pressure is adjusted more finely, so that the counterweight assembly 1 meets the use requirements of filtering equipment of different specifications and different periods, and has stronger versatility. The scraper plates 11 are all made of non-metallic materials, such as nylon, rubber and other materials, which can prevent the scraper plates 11 from scratching the filter cloth 12.

[0027] like Figure 3 As shown, in the first embodiment, the outer surfaces of the first counterweight rod 8 and the connecting rod 6 are both smooth surfaces, and the limit block 7 is provided with a first threaded hole 703 perpendicular to the first through hole 704. After the position of the limit block 7 on the first counterweight rod 8 is determined, the first tightening screw 701 is screwed into the first threaded hole 703, and the end of the first tightening screw 701 contacts the first counterweight rod 8 to achieve position tightening. In order to prevent the first tightening screw 701 from loosening and causing the limit block 7 to move, a first anti-loosening nut 702 is provided on the first tightening screw 701 to prevent loosening. At the same time, the counterweight block 9 is provided with a plurality of groups of second threaded holes 903 in a vertical direction of the second through hole 904. In the present embodiment, there are two groups of second threaded holes 903, which are arranged in parallel. When the position of the counterweight block 9 on the connecting rod 6 is determined, the two groups of second fixing screws 901 are respectively screwed into the second threaded holes 903, and the ends of the second fixing screws 901 are in contact with the connecting rod 6 to fix the position. In order to prevent the second fixing screws 901 from loosening due to vibration and causing displacement of the counterweight block 9, a second anti-loosening nut 902 is provided on the second fixing screws 901 to prevent loosening.

[0028] like Figure 4 As shown, in the second embodiment, the difference from the first embodiment is that the two groups of second threaded holes 903 can also be arranged relatively, and the two groups of second fixing screws 901 are respectively screwed into the second threaded holes 903, and the ends of the second fixing screws 901 on both sides are in contact with the opposite sides of the connecting rod 6 to prevent displacement between the counterweight block 9 and the connecting rod 6, thereby effectively locking the position, and further preventing loosening with the second anti-loosening nut 902.

[0029] like Figure 5As shown, in the third embodiment, the first counterweight rod 8 is provided with a semi-threaded thread 801, and the connecting rod 6 is provided with a full-threaded thread. After the position of the limit block 7 on the first counterweight rod 8 is determined, the first locking nuts 13 at both ends of the limit block 7 are tightened to achieve the position of the limit block 7 to be fixed and prevented from loosening. At the same time, after the position of the counterweight block 9 on the connecting rod 6 is driven, the position of the counterweight block 9 is fixed and prevented from loosening by tightening the second locking nuts 14 at both ends.

[0030] Working principle of the utility model: before the vacuum filter is operated, the relative position of the scraper plate 11 on the discharge rack 5 is adjusted and fixed, and the positions of the limit block 7 and the counterweight block 9 on the first counterweight rod 8 and the connecting rod 6 are moved respectively, so that the scraper plate 11 contacts the filter cloth 12 and applies a certain counterweight pressure. After the positions of the limit block 7 and the counterweight block 9 are determined, they are tightened and prevented from loosening respectively. During the operation, when the filter cloth 12 carries the filter cake through the scraper plate 11, the scraper plate 11 separates the filter cake from the filter cloth 12 under the action of the counterweight pressure to ensure the cleaning effect of the filter cake. When the overlapping position of the filter cloth 12 passes through the scraper plate 11, the overlapping position applies thrust to the scraper plate 11, and the first counterweight rod 8 rotates slightly instantly to reduce the counterweight pressure, so that the overlapping position of the filter cloth 12 passes smoothly, and then the first counterweight rod 8 rotates by itself, which can effectively prevent the scraper plate 11 from damaging the overlapping position and extend the service life of the filter cloth 12.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A counterweight type unloading device, comprising a counterweight assembly (1), a unloading frame (5) and a scraper plate (11), wherein the counterweight assembly (1) is disposed at both ends of the scraper plate (11), and the scraper plate (11) is detachably connected to the unloading frame (5), characterized in that: The scraper plate (11) is positionally adjustable relative to the discharge rack (5); the counterweight assembly (1) is provided with a first counterweight rod (8), the first counterweight rod (8) being sleeved with a second counterweight rod (10) which can be displaced along the first counterweight rod and can be locked in position, the second counterweight rod (10) being sleeved with a counterweight block (9) which can be displaced along the first counterweight rod and can be locked in position, the first counterweight rod (8) passing through a support frame (2) fixed on a frame (15) and being detachably connected to connecting blocks (4) at both ends of the discharge rack (5).

2. The counterweight type unloading device according to claim 1, characterized in that: The second counterweight rod (10) comprises a limit block (7) and a connecting rod (6) for connecting the counterweight block (9); the limit block (7) is provided with a first through hole (704) penetrating at a center position; and the first counterweight rod (8) penetrates the first through hole (704).

3. The counterweight type unloading device according to claim 2 is characterized in that: The outer surfaces of the first counterweight rod (8) and the connecting rod (6) are both smooth surfaces, the limit block (7) is provided with a first threaded hole (703), the first threaded hole (703) is engaged with a first set screw (701) for locking the position of the limit block (7), and the first set screw (701) is provided with a first anti-loosening nut (702) to prevent loosening.

4. The counterweight type unloading device according to claim 3 is characterized in that: A second through hole (904) is provided at the center of the counterweight block (9), and a plurality of second threaded holes (903) are provided in a vertical direction of the second through hole (904). The second threaded holes (903) are engaged with second set screws (901) for locking the position of the counterweight block (9), and the second set screws (901) are provided with second anti-loosening nuts (902) for preventing loosening.

5. The counterweight type unloading device according to claim 4, characterized in that: The plurality of groups of the second threaded holes (903) are arranged in parallel or opposite to each other.

6. The counterweight type unloading device according to claim 2, characterized in that: The first counterweight rod (8) is provided with a semi-threaded thread (801), and a group of first locking nuts (13) are respectively engaged with the semi-threaded threads (801) at both ends of the limit block (7), and the connecting rod (6) is provided with a full-threaded thread.

7. The counterweight type unloading device according to claim 6, characterized in that: A second through hole (904) is provided at the center of the counterweight block (9), and the connecting rod (6) passes through the second through hole (904). A set of second locking nuts (14) are respectively engaged with the full-threaded threads at both ends of the counterweight block (9).

8. The counterweight type unloading device according to claim 1, characterized in that: The first counterweight rod (8) is sleeved with a rotating shaft seat (3) between the support frame (2) and the discharge frame (5); the scraper plate (11) is provided with an oblong hole (16) connected to the discharge frame (5); the oblong hole (16) is used to adjust the installation position of the scraper plate (11).

9. The counterweight type unloading device according to claim 8, characterized in that: The rotating shaft seat (3) and the scraper plate (11) are both made of non-metallic materials.

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