Slurry distributor of belt type vacuum filter

Abstract

The utility model relates to the technical field of industrial and mining equipment, and discloses a slurry distributor of a belt type vacuum filter, which comprises a belt type conveyor body, a box body with an open bottom is fixed at the feed end of the belt type conveyor body, and a feed pipe is arranged on the side wall of the box body close to the top. A V-shaped overflow groove and a balance plate are fixed to the two opposite inner walls of the box body respectively, the other two opposite inner walls of the box body are used for sealing the V-shaped end face of the overflow groove, the overflow groove and the feeding pipe are located on the same inner wall, the balance plate extends to the position below the outer bottom of the overflow groove, a baffle is fixed to the inner top of the box body, and the baffle extends to the position above the groove bottom of the overflow groove. The utility model has the beneficial effects that the baffle plate divides the inner cavity of the V-shaped groove into two parts, and after slurry entering the overflow groove overflows the gap between the baffle plate and the groove bottom, the slurry surface on one side, far away from the feeding pipe, of the baffle plate stably rises and overflows to the balance plate, so that air leakage of the filter belt caused by a foundation pit generated by the slurry on the filter belt due to spray is avoided, and the service life of the filter belt is prolonged. The filtering effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of industrial and mining equipment technology, and in particular to a slurry distributor for a belt vacuum filter. Background Technology

[0002] Vacuum belt filters are a new type of highly automated filtration equipment. Using filter cloth or mesh as the filter medium, the slurry is horizontally arranged on the filter medium, fully utilizing the gravity of the slurry and vacuum suction to achieve solid-liquid separation. Vacuum belt filters are suitable for materials under various concentration conditions and have high filtration efficiency, thus being preferred by many industries.

[0003] The vacuum belt filter press features continuous automation in feeding, filtration, washing, slag removal, and filter cloth cleaning, improving production efficiency, reducing operating costs, significantly reducing labor intensity, and improving the working environment. Material passes through the sedimentation zone, with large particles at the bottom and small particles at the top, resulting in a rational filter cake structure and low resistance to filtrate permeation, enabling rapid thin-layer filtration.

[0004] Chinese utility model patent (authorization announcement number: CN205031964U, title: A slurry distributor for a vacuum filter) includes a support housing, a distribution pipe, and an overflow trough. The distribution pipe has an inlet at its upper part and multiple outlets evenly distributed at its lower part. The overflow trough is correspondingly located below the outlets. Both the distribution pipe and the overflow trough are located within the support housing. This utility model can evenly distribute the slurry onto the filter belt, thereby improving the filtration effect. However, if the slurry in the distribution pipe falls directly into the overflow trough, it will cause the slurry to tumble. When the slurry flow rate is large, it is easy for waves to form and hit the filter belt or equalization plate, causing slurry pits on the filter belt and leading to air leakage, thus affecting the filtration effect. Utility Model Content

[0005] The purpose of this invention is to provide a slurry distributor for a belt vacuum filter to overcome the shortcomings of the prior art.

[0006] The objective of this utility model is achieved through the following technical solution: a slurry distributor for a belt vacuum filter, comprising a belt conveyor body and a filter cloth closed at both ends. The filter cloth is sleeved on the belt of the belt conveyor body and is attached to the upper layer of the belt. A negative pressure box is fixed inside the frame of the belt conveyor body. An air inlet groove is provided on the top of the negative pressure box. An exhaust pipe penetrating the frame is installed on the side wall of the negative pressure box. Air holes are provided on the belt above the air inlet groove. The feed end of the belt conveyor body is fixed with a box with an open bottom. A feed pipe is installed on the side wall of the box near the top. A V-shaped overflow trough and a balancing plate are fixed on two opposite inner walls of the box, respectively. The other two opposite inner walls of the box are used to close the V-shaped end face of the overflow trough. The overflow trough and the feed pipe are located on the same inner wall. The balancing plate extends to the bottom of the overflow trough. A baffle is fixed on the top of the box, and the baffle extends to the bottom of the overflow trough.

[0007] Preferably, the equalizing plate extends toward the feed end of the belt conveyor body.

[0008] Preferably, the belt has a skirt along its edge, and the outer wall of the skirt has a V-shaped groove. The V-shaped groove is a plurality of grooves and is evenly distributed along the edge of the skirt. The filter cloth covers the inner wall of the skirt.

[0009] Preferably, a secondary shaft is rotatably mounted on the frame at the discharge end of the belt conveyor body. The secondary shaft is located below the belt and is used to separate the belt from the filter cloth at the discharge end. A scraper is also installed on the frame below the secondary shaft and is used to scrape off the material on the filter cloth.

[0010] Preferably, a row of support columns is fixed inside the frame, and the row of support columns is evenly distributed along the belt conveying direction of the belt conveyor body. The negative pressure box is fixed inside the frame by the support columns, and the top of the support columns is flush with the top of the negative pressure box.

[0011] Preferably, the belt has a plurality of evenly distributed air grooves, the air grooves extending along a direction perpendicular to the conveying direction of the belt, and each air groove has an air hole at its bottom.

[0012] Preferably, the scraper includes a crossbeam and a mounting frame. The crossbeam is mounted on the frame at the discharge end and is located below the filter cloth. One end of the mounting frame is connected to the crossbeam, and a scraper is mounted on the other end of the frame. The scraper is in contact with the filter cloth.

[0013] Preferably, the mounting bracket is hinged to the crossbeam, and a spring is connected to the side wall of the mounting bracket near the scraper, with the other end of the spring connected to the frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The baffle divides the inner cavity of the V-shaped groove into two. When the slurry entering the overflow groove overflows the gap between the baffle and the bottom of the groove, the slurry surface on the side of the baffle away from the feed pipe rises steadily and overflows onto the equalization plate. This avoids the slurry from splashing out and causing pits on the filter cloth, which would lead to air leakage and ensure the filtration effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the scraper component.

[0019] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle;

[0020] Figure 5 for Figure 2 A magnified view of a portion of point B in the middle;

[0021] In the diagram, 1-belt conveyor body, 2-filter cloth, 3-negative pressure box, 4-air inlet groove, 5-exhaust pipe, 6-air hole, 7-skirt, 8-V-groove, 9-sub-shaft, 10-support column, 11-air groove, 12-crossbeam, 13-mounting bracket, 14-scraper, 15-spring, 16-box, 17-feed pipe, 18-overflow groove, 19-equalization plate, 20-baffle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 connection of 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.

[0028] like Figure 1 , 2As shown in Figure 5, a slurry distributor for a belt vacuum filter includes a belt conveyor body 1 and a filter cloth 2 with closed ends. The filter cloth 2 is sleeved on the belt and is attached to the upper layer of the belt. A negative pressure box 3 is fixed inside the frame of the belt conveyor body 1. An air inlet groove 4 is opened at the top of the negative pressure box 3. An exhaust pipe 5 penetrating the frame is installed on the side wall of the negative pressure box 3. An air hole 6 is opened on the belt above the air inlet groove 4. A box 16 with an open bottom is fixed at the feed end of the belt conveyor body 1. A feed pipe 17 is installed on the side wall of the box 16 near the top. V-shaped overflow grooves 18 and equalization plates 19 are fixed on the two opposite inner walls of the box 16, respectively. The other two opposing inner walls of the housing 16 are used to seal the V-shaped end face of the overflow trough 18. The overflow trough 18 and the feed pipe 17 are located on the same inner wall. The equalization plate 19 extends to the bottom of the overflow trough 18. A baffle 20 is fixed on the inner top of the housing 16. The baffle 20 extends to the bottom of the overflow trough 18. The baffle 20 divides the inner cavity of the V-shaped trough 8 into two. When the slurry entering the overflow trough 18 overflows the gap between the baffle 20 and the bottom of the trough, the slurry surface on the side of the baffle 20 away from the feed pipe 17 rises steadily and overflows onto the equalization plate 19. This avoids the slurry on the filter cloth 2 from being splashed out and causing a pit, which would lead to air leakage of the filter cloth 2 and ensure the filtration effect.

[0029] In this embodiment, as Figure 1 , 2 As shown in Figure 5, the equalization plate 19 extends toward the feed end of the belt conveyor body 1. The slurry flow direction on the equalization plate 19 is opposite to the conveying direction of the belt, causing the slurry to suddenly flow in the opposite direction when it enters the filter cloth 2, thus generating a dam-shaped slurry belt. Under the action of the slurry belt, the filter cloth 2 is evenly covered with slurry.

[0030] In this embodiment, as Figure 1 , 2 As shown in Figure 4, a skirt 7 is provided along the edge of the belt. A V-shaped groove 8 is provided on the outer wall of the skirt 7. There are several V-shaped grooves 8, which are evenly distributed along the edge of the skirt 7. The filter cloth 2 covers the inner wall of the skirt 7. The V-shaped groove 8 on the outer wall of the skirt 7 reduces the stress during deformation, ensures that the skirt 7 can pass smoothly through the drive shaft, avoids cracking, and also avoids gaps between the inner wall and the filter cloth 2 that could lead to air leakage, thus improving the filtration effect.

[0031] In this embodiment, as Figure 1-4 As shown, a secondary shaft 9 is rotatably mounted on the frame at the discharge end of the belt conveyor body 1. The secondary shaft 9 is located below the belt and is used to separate the belt from the filter cloth 2 at the discharge end. A scraper is also installed on the frame below the secondary shaft 9. The scraper is used to scrape off the material on the filter cloth 2. The filter cloth 2 is peeled off by the secondary shaft 9, which facilitates the removal of the dewatered material. With the use of the scraper, the removal of the material can be more thorough.

[0032] In this embodiment, as Figure 1-4 As shown, a row of support columns 10 is fixed inside the frame. The row of support columns 10 is evenly distributed along the belt conveying direction of the belt conveyor body 1. The negative pressure box 3 is fixed inside the frame through the support columns 10, and the top of the support columns 10 is flush with the top of the negative pressure box 3. The support columns 10 are in line contact with the belt, which can ensure the support of the belt and reduce the wear of the belt.

[0033] In this embodiment, as Figure 1-4 As shown, the belt has several evenly distributed air grooves 11. The air grooves 11 extend along the conveying direction perpendicular to the belt. Each air groove 11 has an air hole 6 at its bottom, which increases the water absorption area of ​​the filter cloth 2 in the cross section (the surface perpendicular to the conveying direction of the belt) of the negative pressure box 3, and improves the dewatering speed of the material.

[0034] In this embodiment, as Figure 1-4 As shown, the scraping component includes a crossbeam 12 and a mounting frame 13. The crossbeam 12 is mounted on the frame at the discharge end and is located below the filter cloth 2. One end of the mounting frame 13 is connected to the crossbeam 12, and the other end is equipped with a scraper 14. The scraper 14 is in contact with the filter cloth 2. The scraper 14 removes the clumps on the filter cloth 2, keeps the surface of the filter cloth 2 clean, and ensures the filtration effect of the filter cloth 2.

[0035] In this embodiment, as Figure 1-4 As shown, the mounting frame 13 is hinged to the crossbeam 12. A spring 15 is connected to the side wall of the mounting frame 13 near the scraper 14. The other end of the spring 15 is connected to the frame. The mounting frame 13 is made movable so that the scraper 14 can always be in close contact with the surface of the filter cloth 2.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A slurry distributor of a belt vacuum filter, comprising a belt conveyor body (1) and a filter cloth (2) closed at both ends, the filter cloth (2) being sleeved on the belt of the belt conveyor body (1), and the filter cloth (2) being attached to the upper layer of the belt, a negative pressure box (3) being fixed in the frame of the belt conveyor body (1), an air inlet groove (4) being formed on the top of the negative pressure box (3), an exhaust pipe (5) penetrating through the frame being installed on the sidewall of the negative pressure box (3), and air holes (6) being formed on the belt above the air inlet groove (4), characterized in that: The bottom-opened box (16) is fixed to the feeding end of the belt conveyor body (1), the feeding pipe (17) is installed on the side wall of the box (16) near the top, the V-shaped overflow groove (18) and the equalizing plate (19) are respectively fixed to the two opposite inner walls of the box (16), the other two opposite inner walls of the box (16) are used for closing the V-shaped end face of the overflow groove (18), the overflow groove (18) is located on the same inner wall as the feeding pipe (17), the equalizing plate (19) extends below the outer bottom of the overflow groove (18), the baffle (20) is fixed to the inner top of the box (16), and the baffle (20) extends above the groove bottom of the overflow groove (18).

2. A slurry distributor for a belt vacuum filter according to claim 1, characterized in that: The equalizing plate (19) extends towards the feeding end of the belt conveyor body (1).

3. A slurry distributor for a belt vacuum filter according to claim 1, characterized in that: The skirt (7) is arranged along the edge of the belt, the V-shaped groove (8) is arranged on the outer wall of the skirt (7), the V-shaped groove (8) is arranged along the edge of the skirt, and the filter cloth (2) covers the inner wall of the skirt (7).

4. The slurry distributor for a belt vacuum filter according to claim 1, wherein: The auxiliary shaft (9) is rotatably installed on the rack at the discharging end of the belt conveyor body (1), the auxiliary shaft (9) is located below the belt, the auxiliary shaft (9) is used for separating the belt at the discharging end from the filter cloth (2), and the scraping piece is also installed on the rack below the auxiliary shaft (9) and is used for scraping off the material on the filter cloth (2).

5. The slurry distributor for a belt vacuum filter according to claim 1, wherein: A row of support columns (10) are fixed in the rack, the row of support columns (10) are uniformly arranged along the belt conveying direction of the belt conveyor body (1), the negative pressure box (3) is fixed in the rack through the support columns (10), and the top of the support column (10) is flush with the top of the negative pressure box (3).

6. A slurry distributor for a belt vacuum filter according to claim 1, characterized in that: A plurality of air grooves (11) are uniformly arranged on the belt, the air grooves (11) extend along the direction perpendicular to the conveying direction of the belt, and the bottom of each air groove (11) is provided with one air hole (6).

7. A slurry distributor for a belt vacuum filter according to claim 4, characterized in that: The scraping piece comprises a cross beam (12) and a mounting frame (13), the cross beam (12) is installed on the rack at the discharging end, the cross beam (12) is located below the filter cloth (2), one end of the mounting frame (13) is connected with the cross beam (12), the other end of the mounting frame (13) is provided with a scraper (14), and the scraper (14) is attached to the filter cloth (2).

8. A slurry distributor for a belt vacuum filter according to claim 7, characterized in that: The mounting frame (13) is hinged to the cross beam (12), the spring (15) is connected to the side wall of the mounting frame (13) close to the scraper (14), and the other end of the spring (15) is connected with the rack.

Images