A high-efficiency anti-clogging internal inlet bar screen and bar screen cleaning machine

Abstract

This utility model discloses a high-efficiency, anti-clogging, internally inlet bar screen and bar screen cleaning machine, belonging to the technical field of wastewater treatment equipment. The bar screen of this utility model includes an outer frame plate and multiple first and second inserts detachably installed within the outer frame plate. All the first and second inserts are perpendicular to each other and cross-connected, with the gaps formed at the connections of the first and second inserts forming filter mesh holes. Both the first and second inserts are machined into a triangular prism structure, with the first inserts vertically inserted into the body of the second insert. The cutting edges of all the first and second inserts face the same side, forming the water-facing surface of the bar screen, while the opposite side forms the backwater surface. This utility model's bar screen features high-efficiency filtration, anti-clogging, impact resistance, low maintenance costs, long service life, and eliminates the need for frequent cleaning and replacement, significantly improving the operating efficiency and stability of the equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment, and more specifically, it relates to a high-efficiency anti-clogging internal flow bar screen and bar screen cleaning machine. Background Technology

[0002] In wastewater treatment and related fields, internal flow bar screens are widely used as important filtration devices to remove various large particulate impurities and fibrous materials from wastewater, ensuring the smooth operation of subsequent treatment processes. However, traditional internal flow bar screens face several technical challenges in actual operation. Firstly, their flow capacity is limited. Due to the conventional design of the interception structure and the less-than-ideal mesh structure and layout, traditional internal flow bar screens cannot effectively filter out impurities when faced with large flow rates of wastewater. This can easily cause congestion as water flows through the screen, resulting in low flow rates and affecting the overall treatment efficiency of the wastewater treatment system.

[0003] On the other hand, traditional internal flow grids are prone to clogging. Impurities such as fibrous materials in wastewater easily become entangled in the grid's mesh. Over time and with changes in wastewater flow, this entanglement worsens, eventually leading to grid blockage. Once clogged, not only does it affect normal wastewater filtration, but it may also require frequent manual cleaning or system shutdowns for maintenance, significantly increasing operating costs.

[0004] To address these issues, some existing technologies have improved the structure of the internal flow grille. For example, adjusting the shape and size of the mesh openings can increase flow capacity, or simple anti-clogging devices can be added. However, these improvements often only alleviate the problem to a certain extent and do not fundamentally solve the technical challenges of low flow rate and easy clogging.

[0005] A search revealed Chinese patent publication number CN106799081 A, published on June 6, 2017, entitled "Mesh Grille and Filter Screen for Mesh Grille." This patent discloses a mesh grille comprising: a support structure; a power unit disposed on the support structure; and a filter unit disposed on the support structure. The filter unit includes multiple filter screens connected end-to-end. The filter unit is rotatable under the drive of the power unit. The filter screens have filter holes and deformable portions formed on them to enhance their structural strength. While this patent optimizes the structure and installation method of the filter screen, thus improving its structural strength, it fails to address the problem of easy clogging.

[0006] Therefore, against the backdrop of the rapid development of the wastewater treatment industry, the technical defects existing in the current technology limit the application effect and development space of the internal flow bar screen. There is an urgent need for a new, high-efficiency, anti-clogging internal flow bar screen to better meet the needs of practical applications, improve the efficiency and quality of wastewater treatment, and reduce operation and maintenance costs. Utility Model Content

[0007] 1. The problem to be solved

[0008] To address the problems of low flow rate, easy clogging, and high maintenance costs in existing internal flow fine bar screens, this invention provides a high-efficiency, anti-clogging internal flow bar screen and bar screen cleaning machine that can solve the above problems. It features high-efficiency filtration, anti-clogging, impact resistance, and low maintenance costs, significantly improving the operating efficiency and stability of the equipment.

[0009] 2. Technical Solution

[0010] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0011] This utility model discloses a high-efficiency anti-clogging internal flow bar screen, comprising an outer frame plate and multiple first inserts and multiple second inserts detachably installed within the outer frame plate, wherein:

[0012] All the first inserts and all the second inserts are perpendicular to each other and cross each other. The gap formed at the connection of the first inserts and the second inserts is the filter mesh.

[0013] Both the first and second inserts are machined into a triangular prism structure. The cross-sectional shape of the first insert is the same as that of the second insert, and the cross-sectional area of ​​the first insert is smaller than that of the second insert. The first insert is inserted vertically into the body of the second insert.

[0014] The end of each first insertion rod and the end of each second insertion rod are inserted into the inner side wall of the outer frame plate, and the cutting edges of all the first insertion rods and all the second insertion rods face the same side to form the water-facing side of the intercepting mesh plate, while the wide sides of all the first insertion rods and all the second insertion rods face the opposite side to form the back side of the intercepting mesh plate.

[0015] As a further optimization of this utility model, the cross-section of the first insertion rod is an isosceles triangle, and the surface of the second insertion rod is machined with a perforation, into which the first insertion rod is inserted.

[0016] As a further optimization of this utility model, the first and second inserts are made of metal.

[0017] As a further optimization of this utility model, it also includes a mounting plate, one side of which is detachably connected to the inner wall of the outer frame plate, and the other side of the mounting plate is machined with a U-shaped groove for the first insertion rod and the second insertion rod to engage.

[0018] As a further optimization of this utility model, the mounting plate is processed into an L-shaped structural plate.

[0019] As a further optimization of this utility model, it also includes a stiffening plate, which is located on the backwater surface and parallel to the second insert rod. The two ends of the stiffening plate are connected to the outer frame plate by bolts or welding.

[0020] As a further optimization of this utility model, multiple stiffening plates are provided, and these multiple stiffening plates are equally spaced on the backwater side.

[0021] This utility model discloses a high-efficiency anti-clogging internal flow bar screen cleaner, which includes the aforementioned intercepting screen plate.

[0022] As a further optimization of this utility model, the outer frame plate of the intercepting screen is installed on the lifting chain of the sewage removal machine.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] (1) This utility model discloses a high-efficiency anti-clogging internal flow-intake grid intercepting screen plate. By redesigning the existing filter screen plate structure, a triangular prism structure is designed with the first and second insert rods cross-connected to form the screen plate structure. The gap formed at the connection of the first and second insert rods serves as the filter mesh hole. This structure design of the intercepting screen plate has a high opening ratio, which significantly improves the flow rate of the intercepting screen plate and reduces clogging. At the same time, the cutting edges of the first and second insert rods are both set on the water-facing side of the intercepting screen plate. The sharp cutting edges can realize the self-cutting function of fiber materials, avoiding the clogging of the mesh holes by fiber materials. It has excellent anti-clogging performance and significantly improves the operating efficiency and stability of the equipment.

[0026] (2) This utility model provides a high-efficiency anti-clogging internal flow bar screen for intercepting sewage. By setting an installation plate, one side of the installation plate can be detachably installed on the outer frame plate, while the other side is machined with a U-shaped groove for engaging the first and second insert rods. This plug-in, snap-fit ​​installation simplifies the installation process and makes the screen easy to use. Furthermore, when an insert rod is damaged, the corresponding rod can be directly replaced without replacing the entire screen, resulting in low maintenance costs.

[0027] (3) The present invention provides a high-efficiency anti-clogging internal flow grid intercepting screen plate, the mounting plate is processed into an L-shaped structure, the side plate connected to the outer frame plate is thinner, and the side plate with the U-shaped groove is thicker, which can significantly reduce production costs.

[0028] (4) The present invention provides a high-efficiency anti-clogging internal inlet grid intercepting screen plate with ribs on the back water surface of the intercepting screen plate. During flushing, the ribs can effectively resist the impact of backwash water flow on the screen plate, extend the service life of the screen plate. At the same time, the ribs also further improve the strength of the entire screen plate, and the screen plate is not easy to deform during long-term use.

[0029] (5) The first and second insert rods of this utility model are made of corrosion-resistant metal materials, such as SS304, SS316L, SS904L or 2205 duplex stainless steel, which have strong corrosion resistance and help extend the service life of the screen.

[0030] (6) The present invention provides a high-efficiency anti-clogging internal flow bar screen cleaner, which includes the above-mentioned intercepting screen plate. The outer frame plate of the intercepting screen plate is installed on the lifting chain. With the rotation of the chain, the sewage is filtered. The filtration effect is good and the mesh is not easy to clog. Compared with conventional filter screen plates, the flow rate is significantly increased. It has the characteristics of high-efficiency filtration, anti-clogging, impact resistance and low maintenance cost, which significantly improves the operating efficiency and stability of the equipment. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the intercepting mesh plate of this utility model;

[0032] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0033] Figure 3 This is a schematic diagram of the main structure of the first insert of this utility model;

[0034] Figure 4 This is a side view of the first insertion rod of this utility model.

[0035] Figure 5 This is a schematic diagram of the main structure of the second insert of this utility model;

[0036] Figure 6 This is a side view of the second insertion rod of this utility model;

[0037] Figure 7 This is a three-dimensional structural diagram of the intercepting mesh plate from another perspective of this utility model;

[0038] Figure 8 for Figure 7 Enlarged view of the structure at point B in the middle;

[0039] Figure 9 This is a schematic diagram of the mounting plate of this utility model;

[0040] Figure 10 This is a cross-sectional structural diagram of the intercepting mesh plate of this utility model.

[0041] In the picture:

[0042] 1. First insertion rod;

[0043] 2. Second insertion rod; 201. Perforation;

[0044] 3. Mounting plate; 301, U-shaped groove;

[0045] 4. Outer frame plate; 5. Stiffening plate; 6. Water-facing side; 7. Water-repelling side. Detailed Implementation

[0046] It should be noted that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify 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 limiting the scope of protection of this utility model.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0048] The present invention will be further described below with reference to specific embodiments.

[0049] Example 1

[0050] like Figure 1-2 and Figure 7-10 As shown, this embodiment provides a high-efficiency anti-clogging internal inlet bar screen, comprising an outer frame plate 4 and multiple first insert rods 1 and multiple second insert rods 2 detachably installed within the outer frame plate 4. Specifically, all the first insert rods 1 and all the second insert rods 2 are perpendicular to each other and cross-connected, as shown... Figure 3 and Figure 4 As shown, in this embodiment, the first insert rod 1 is machined into a triangular prism structure, as follows: Figure 5 and Figure 6As shown, the second insert 2 is also processed into a triangular prism structure. The cross-sections of the first insert 1 and the second insert 2 are similar triangles. In this embodiment, the triangle is preferably an isosceles triangle.

[0051] In this embodiment, to successfully insert the first insertion rod 1 into the body of the second insertion rod 2, the cross-sectional area of ​​the first insertion rod 1 is smaller than that of the second insertion rod 2. A through hole 201 is machined on the body of the second insertion rod 2 corresponding to the insertion point of the first insertion rod 1. The first insertion rod 1 passes through the through holes 201 at the same positions on multiple second insertion rods 2, and both ends of the first insertion rod 1 are secured to the inner wall of the outer frame plate 4. To facilitate rod replacement, a slot can be provided on the outer frame plate 4 so that the ends of the first insertion rod 1 and the second insertion rod 2 can be secured to the outer frame plate 4. The first insertion rod 1 and the second insertion rod 2 are arranged at equal intervals, and the gap formed at their connection point is the filter mesh. Multiple insertion rods are connected to form the entire filter mesh surface.

[0052] It is worth noting that in this embodiment, both the first insertion rod 1 and the second insertion rod 2 are designed as triangular prism structures, and the cutting edges of all the first insertion rod 1 and all the second insertion rod 2 (i.e., as shown in the figure) are... Figure 4 or Figure 6 The bottom apex of the triangle is defined as the cutting edge, and the top side of the triangle is defined as the wide face. All the first inserts 1 and all the second inserts 2 have their wide faces facing opposite sides, forming the back surface 7 of the intercepting mesh. Through optimized design of the insert structure, the pore sizes of the water-facing surface 6 and the back surface 7 are different, and the pores gradually decrease as sewage flows from the water-facing surface 6 to the back surface 7. Compared to conventional fixed pore sizes, the high open area structure of the intercepting mesh in this embodiment significantly improves the flow rate of the mesh. Simultaneously, on the water-facing surface 6, the cutting edge of the insert can achieve a self-cutting function for fibrous materials, preventing fibrous materials from clogging the mesh, exhibiting excellent anti-clogging performance, and significantly improving the operating efficiency and stability of the equipment.

[0053] Furthermore, and even more optimized, the first insertion rod 1 and the second insertion rod 2 are made of metal materials, such as SS304, SS316L, SS904L, and 2205 duplex stainless steel, with no burrs on the surface, which can significantly improve the corrosion resistance of the mesh and help extend the service life of the mesh.

[0054] Example 2

[0055] This embodiment of a high-efficiency anti-clogging internal flow bar screen has a basic structure similar to that of Embodiment 1. The difference lies in the inclusion of a mounting plate 3. One side of the mounting plate 3 is detachably connected to the inner wall of the outer frame plate 4, and the other side of the mounting plate 3 has a U-shaped groove 301 for engaging the first insertion rod 1 and the second insertion rod 2. By using the mounting plate 3, the installation of the first insertion rod 1 and the second insertion rod 2 can be completed quickly and easily, significantly improving installation efficiency. Furthermore, when a insertion rod is damaged and needs replacement, only a new insertion rod needs to be replaced, eliminating the need to replace the entire screen and reducing maintenance costs.

[0056] In addition, the mounting plate 3 is further optimized by processing it into an L-shaped structural plate, with the side of the plate connected to the outer frame plate being thinner and the side of the plate with the U-shaped groove being thicker, which can significantly reduce production costs.

[0057] As another embodiment of this invention, the intercepting screen plate is further equipped with reinforcing ribs 5. The reinforcing ribs 5 are located on the backwater surface 7 and are parallel to the second insert rod 2. The two ends of the reinforcing ribs 5 are connected to the outer frame plate 4 by bolts or welding. The reinforcing ribs 5 effectively resist the impact of backwash water flow on the screen plate during flushing, extending the service life of the screen plate. At the same time, the reinforcing ribs 5 further improve the overall strength of the screen plate, making it less prone to deformation during long-term use.

[0058] Furthermore, multiple stiffening plates 5 are provided, and these multiple stiffening plates 5 are evenly spaced on the back surface 7, which can further improve the strength of the mesh and prevent the mesh from deforming during long-term use or backwashing.

[0059] Example 3

[0060] This embodiment provides a high-efficiency, anti-clogging, internally inlet bar screen cleaner. The bar screen cleaner includes the intercepting mesh plate described in Embodiment 1 or Embodiment 2. The outer frame plate 4 of the intercepting mesh plate is installed on the lifting chain of the cleaner, allowing for wastewater filtration as the lifting chain rotates. It offers excellent filtration performance and the mesh is less prone to clogging. Compared to conventional filter plates, it significantly increases the flow rate and features high-efficiency filtration, anti-clogging, impact resistance, and low maintenance costs. It can be widely used in wastewater treatment, industrial wastewater treatment, and other fields. It has a simple structure, is easy to use, and boasts high operating efficiency and stability, effectively reducing equipment maintenance costs and minimizing environmental pollution.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency anti-clogging internal flow bar screen, characterized in that: Includes an outer frame plate (4) and multiple first insert rods (1) and multiple second insert rods (2) detachably installed within the outer frame plate (4), wherein: All the first inserts (1) and all the second inserts (2) are perpendicular to each other and cross each other. The gap formed at the connection of the first inserts (1) and the second inserts (2) is the filter mesh. The first insert (1) and the second insert (2) are both processed into triangular prism structures. The cross-sectional shape of the first insert (1) is the same as that of the second insert (2), and the cross-sectional area of ​​the first insert (1) is smaller than that of the second insert (2). The first insert (1) is inserted vertically into the body of the second insert (2). The end of each first rod (1) and the end of each second rod (2) are inserted into the inner side wall of the outer frame plate (4), and the cutting edges of all the first rods (1) and all the second rods (2) face the same side to form the water-facing surface (6) of the intercepting mesh plate, and the wide surfaces of all the first rods (1) and all the second rods (2) face the opposite side to form the back surface (7) of the intercepting mesh plate.

2. The high-efficiency anti-clogging internal flow bar screen according to claim 1, characterized in that: The cross-section of the first insert (1) is an isosceles triangle, and the surface of the second insert (2) is machined with a perforation (201). The first insert (1) is inserted into the perforation (201).

3. The high-efficiency anti-clogging internal flow bar screen according to claim 1, characterized in that: The first insertion rod (1) and the second insertion rod (2) are made of metal.

4. A high-efficiency anti-clogging internal flow bar screen according to any one of claims 1-3, characterized in that: It also includes a mounting plate (3), one side of which is detachably connected to the inner wall of the outer frame plate (4), and the other side of the mounting plate (3) is machined with a U-shaped groove (301) for the first insert rod (1) and the second insert rod (2) to be engaged.

5. The high-efficiency anti-clogging internal flow bar screen according to claim 4, characterized in that: The mounting plate (3) is processed into an L-shaped structural plate.

6. The high-efficiency anti-clogging internal flow bar screen according to claim 4, characterized in that: It also includes stiffening plates (5), which are located on the back side (7) and parallel to the second insert (2). The two ends of the stiffening plates (5) are connected to the outer frame plate (4) by bolts or welding.

7. The high-efficiency anti-clogging internal flow bar screen according to claim 6, characterized in that: There are multiple stiffening plates (5), and the multiple stiffening plates (5) are evenly spaced on the back side (7).

8. A high-efficiency, anti-clogging, internally inlet bar screen cleaner, characterized in that: Includes the intercepting mesh screen as described in any one of claims 1-7.

9. A high-efficiency anti-clogging internal inlet bar screen cleaner according to claim 8, characterized in that: The outer frame plate (4) of the intercepting screen is installed on the lifting chain of the cleaning machine.

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