Water jet abrasive collection device and water jet abrasive circulation system

Abstract

The utility model discloses a water jet abrasive collection device, including the collection subassembly for receiving and conveying the abrasive after use, and set up in the collection subassembly for the auxiliary abrasive flow flush water subassembly, the collection subassembly includes the upper collection hopper and lower collection hopper of all downward close, the upper collection hopper bottom discharge port is less than the top feed port of lower collection hopper, the upper collection hopper is connected to be located the lower collection hopper top, and forms a connection transition area at the joint, flush water subassembly is located the connection transition area. The utility model discloses a water jet abrasive circulating system still, including the water jet abrasive collection device, still including cleaning tank and jet pump, the water jet abrasive collection device upper end with cleaning tank bottom intercommunication, the water jet abrasive collection device lower end with abrasive inlet of jet pump intercommunication. The utility model discloses through setting up upper collection hopper and lower collection hopper, improve abrasive fluidity.

Description

Technical Field

[0001] This utility model belongs to the field of abrasive waterjet technology, and particularly relates to an abrasive collection device and circulation system. Background Technology

[0002] Abrasive waterjet technology is widely used in metal surface cleaning operations due to its environmental friendliness and high efficiency. In this process, the abrasive is recycled, significantly reducing cleaning costs. The specific process is as follows: after being sprayed from the nozzle, the abrasive disperses within the cleaning tank. Most of it falls into a collection hopper at the bottom of the tank due to gravity, and is then pumped from the bottom of the hopper to a higher abrasive tank by a jet pump. Given the characteristic of abrasive recycling, its circulation rate becomes a key factor in ensuring supply stability.

[0003] To address the issues of abrasive accumulation and poor flowability during transport, Chinese utility model patent CN208100136U proposes a water jet abrasive conveying device. This solution, by introducing a water sprayer structure, effectively improves the flow state of the abrasive below the collection hopper and abrasive tank, thereby enhancing the abrasive circulation efficiency.

[0004] However, the device still has the following problems: the collection hopper is an inverted trapezoidal body welded from four isosceles trapezoidal plates. There is a transition platform between its bottom and the circular abrasive outlet. This area is prone to abrasive accumulation. Long-term accumulation of abrasive steel shot may cause galvanic corrosion, leading to steel shot agglomeration. At the same time, the water spray pipe is buried inside the steel shot for a long time, which is prone to blockage. This not only hinders the flow of abrasive but may also cause blockage of the entire collection hopper, affecting the stable operation of the system. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a water jet abrasive collection device and water jet abrasive circulation system that prevents water jet abrasive from accumulating and makes the flushing holes less prone to clogging.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows: A waterjet abrasive collection device includes a collection assembly for receiving and conveying used abrasive, and a flushing assembly disposed on the collection assembly for assisting the flow of abrasive. The collection assembly includes an upper collection hopper and a lower collection hopper, both of which taper downwards. The bottom outlet of the upper collection hopper is smaller than the top inlet of the lower collection hopper. The upper collection hopper is connected above the lower collection hopper, and a connection transition zone is formed at the connection. The flushing assembly is disposed in the connection transition zone.

[0007] In the aforementioned water jet abrasive collection device, preferably, the flushing component includes multiple flushing holes arranged around the connecting transition zone, and the flushing holes are connected to an external water pipe. The multiple flushing holes distributed around the connecting transition zone allow for uniform and synchronous spraying of water downwards onto the abrasive in the lower collection hopper from a circumferential direction, more efficiently propelling the abrasive downwards. Furthermore, it eliminates the need for a complex additional water spray pipe extension structure, reducing the complexity of device assembly. Simultaneously, the direct connection of the flushing holes to the external water pipe facilitates future maintenance or cleaning.

[0008] In the aforementioned water jet abrasive collecting device, preferably, the flushing holes are inclined toward the center of the discharge port of the lower collecting hopper. By setting the flushing holes inclined toward the center of the discharge port, the water flow can form a downward and centripetal directional impact force, directly acting on the abrasive in the lower collecting hopper, providing a pushing force for the abrasive toward the bottom discharge port, effectively preventing the abrasive from accumulating and stagnating on the inner wall of the lower collecting hopper, and pushing the abrasive to quickly converge at the bottom discharge port of the lower collecting hopper, thus improving the smoothness and efficiency of abrasive conveying.

[0009] In the aforementioned waterjet abrasive collecting device, preferably, an upper flange is fixedly connected to the outer periphery of the bottom outlet of the upper collecting hopper, and a lower flange is correspondingly fixedly connected to the outer periphery of the top inlet of the lower collecting hopper. The upper and lower flanges have several bolt connection holes along their outer peripheries, and are fixedly connected by connecting bolts passing through them. The connection transition zone is located between the outer wall of the upper collecting hopper and the inner wall of the lower collecting hopper connected by the upper flange. The flushing hole is located in the connection transition zone of the upper flange. By setting a flange connection, the assembly of the upper and lower collecting hoppers does not require a complex positioning process; precise docking can be achieved simply by tightening the connecting bolts. During later maintenance, the two collecting hoppers can be separated simply by removing the bolts, facilitating the cleaning of residual abrasive and maintenance of the flushing components.

[0010] In the aforementioned waterjet abrasive collecting device, preferably, the upper end face of the lower flange is provided with a sealing mounting groove along its circumference, and a rubber sealing ring is provided in the sealing mounting groove. With this arrangement, when the upper and lower flanges are joined, the rubber sealing ring is subjected to elastic deformation under the pressure of the two flanges, which can tightly fill the tiny gaps on the flange joining surfaces, forming a reliable sealing barrier and ensuring the sealing performance of the connection between the upper and lower collecting hoppers.

[0011] In the aforementioned waterjet abrasive collecting device, preferably, the bottom outlet of the upper collecting hopper is 30mm-50mm lower than the top inlet of the lower collecting hopper. This arrangement allows the portion of the bottom outlet of the upper collecting hopper extending into the top inlet of the lower collecting hopper, forming an upwardly concave cavity. The flushing hole is located at the top of this cavity. This height difference directly creates a safe distance between the flushing hole and the abrasive accumulation surface. When the abrasive overflows the bottom of the upper collecting hopper, it is constrained by its own weight and interparticle friction, and will only accumulate in the main space of the lower collecting hopper, thus structurally preventing the abrasive from clogging the flushing hole.

[0012] In the aforementioned waterjet abrasive collecting device, preferably, the angle between the walls of both the upper and lower collecting hoppers and the horizontal plane is not less than 60 degrees. This inclination ensures that the component of the abrasive's own weight downwards along the hopper wall is significantly greater than the frictional force between the abrasive and the hopper wall, thus promoting the abrasive to slide naturally down the hopper wall and preventing abrasive buildup due to an excessively gentle hopper wall, thereby ensuring the continuity of abrasive delivery.

[0013] As a general technical concept, this utility model also provides a waterjet abrasive circulation system, including the aforementioned waterjet abrasive collecting device, a cleaning tank, and a jet pump. The upper end of the waterjet abrasive collecting device is connected to the bottom of the cleaning tank, and the lower end of the waterjet abrasive collecting device is connected to the abrasive inlet of the jet pump. This configuration, with the upper end of the collecting device directly connected to the bottom of the cleaning tank, allows for rapid collection of abrasive particles scattered within the cleaning tank, preventing abrasive residue accumulation at the bottom. The lower end is directly connected to the abrasive inlet of the jet pump, enabling the collected abrasive to enter the conveying stage via the shortest path, reducing time delays during abrasive transport, forming a closed and efficient circulation path, and improving the overall abrasive turnover rate of the system.

[0014] In the aforementioned waterjet abrasive circulation system, preferably, the bottom of the cleaning box is connected to multiple waterjet abrasive collecting devices. The upper collecting hopper is a square-pyramidal collecting hopper with a square cross-section. The shape and size of the top inlets of the multiple square-pyramidal collecting hoppers match the bottom outlet of the cleaning box. Compared to a single large collecting hopper, this arrangement uses multiple hoppers in parallel, occupying less working space and allowing for reasonable dispersion of the total material flow, reducing the risk of blockage. Furthermore, by precisely matching the square cleaning box, it maximizes the coverage of the material drop area at the bottom of the cleaning box, avoiding collection blind spots caused by shape and size mismatch, reducing abrasive residue at the junction of the cleaning box and the collecting hopper, and improving the abrasive recovery rate.

[0015] In the aforementioned waterjet abrasive circulation system, preferably, the lower collecting hopper is a conical collecting hopper, and the shape and size of its bottom outlet match the abrasive inlet of the jet pump. This direct and tight connection avoids steps caused by differences in interface shape, prevents abrasive accumulation and blockage, and improves the smoothness of the conveying path.

[0016] Compared with the prior art, the advantages of this utility model are: This invention eliminates the problem of abrasive accumulation on the transition platform of the traditional inverted trapezoidal collection hopper structure by setting up a double-layered constriction structure with an upper and lower collection hopper. This effectively avoids galvanic corrosion and agglomeration caused by long-term abrasive accumulation and improves abrasive flowability. Furthermore, by placing the flushing component in the connecting transition area, the water flow sprayed by the flushing component can directly act on the abrasive's falling path, more efficiently propelling the abrasive downwards. It also prevents the flushing component from being covered by abrasive, significantly reducing the risk of flushing hole blockage and ensuring the long-term stable operation of the flushing component. This, in turn, ensures the smooth abrasive transport of the entire collection device and maintains the stability of system operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the water jet abrasive collection device in the embodiment; Figure 2 This is a cross-sectional view of the waterjet abrasive collection device according to an embodiment; Figure 3 A three-dimensional structural schematic diagram of the water jet abrasive collection device in an embodiment; Figure 4 This is a schematic diagram of the water jet abrasive circulation system in an embodiment.

[0019] Legend 1. Collection assembly; 11. Upper collection hopper; 12. Lower collection hopper; 13. Upper flange; 14. Lower flange; 15. Connecting bolts; 2. Flushing assembly; 21. Flushing hole; 3. Cleaning box; 4. Jet pump; 5. Abrasive tank. Detailed Implementation

[0020] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0021] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0022] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0023] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0024] Example: like Figures 1 to 4 As shown, the water jet abrasive collection device of this embodiment includes a collection component 1 for receiving and conveying used abrasive, and a flushing component 2 disposed on the collection component 1 for assisting the flow of abrasive. The collection component 1 includes an upper collection hopper 11 and a lower collection hopper 12, both of which have downward-facing openings. The bottom outlet of the upper collection hopper 11 is smaller than the top inlet of the lower collection hopper 12. The upper collection hopper 11 is connected above the lower collection hopper 12, and a connection transition zone is formed at the connection. The flushing component 2 is disposed in the connection transition zone.

[0025] In this embodiment, the flushing assembly 2 includes two flushing holes 21 surrounding the connecting transition area, and the flushing holes 21 are connected to an external water pipe. In other embodiments, the number of flushing holes 21 can be set according to actual conditions.

[0026] In this embodiment, the flushing hole 21 is inclined toward the center of the discharge port of the lower collection hopper 12.

[0027] In this embodiment, an upper flange 13 is fixedly connected to the outer periphery of the bottom discharge port of the upper collecting hopper 11, and a lower flange 14 is fixedly connected to the outer periphery of the top inlet of the lower collecting hopper 12. The upper flange 13 and the lower flange 14 are provided with several bolt connection holes along their outer periphery and are fixedly connected by connecting bolts 15 passing through them. The connection transition area is located between the outer wall of the upper collecting hopper 11 and the inner wall of the lower collecting hopper 12 connected by the upper flange 13. The flushing hole 21 is provided in the connection transition area of ​​the upper flange 13.

[0028] In this embodiment, a sealing mounting groove is provided on the upper end face of the lower flange 14 along its circumference, and a rubber sealing ring is provided in the sealing mounting groove.

[0029] In this embodiment, the bottom discharge port of the upper collecting hopper 11 is 50mm lower than the top inlet port of the lower collecting hopper 12.

[0030] In this embodiment, the angle between the wall of the upper collecting hopper 11 and the wall of the lower collecting hopper 12 and the horizontal plane is 60 degrees.

[0031] The water jet abrasive circulation system of this embodiment includes a water jet abrasive collection device, a cleaning tank 3, and a jet pump 4. The upper end of the water jet abrasive collection device is connected to the bottom of the cleaning tank 3, and the lower end of the water jet abrasive collection device is connected to the abrasive inlet of the jet pump 4.

[0032] In this embodiment, the bottom of the cleaning box 3 is connected to multiple water jet abrasive collecting devices. The upper collecting hopper 11 is a square cone-shaped collecting hopper with a square cross-section. The shape and size of the top inlets of the multiple square cone-shaped collecting hoppers are matched with the bottom outlet of the cleaning box 3.

[0033] In this embodiment, the lower collecting hopper 12 is a conical collecting hopper, and the shape and size of its bottom discharge port match the abrasive inlet of the jet pump 4.

[0034] In this embodiment, an abrasive tank 5 is also included, and the abrasive from the water jet abrasive collection device is pumped into the abrasive tank 5 by the jet pump 4.

[0035] In this embodiment, the specific manufacturing steps include: S1: Based on the dimensions and shape of the cleaning box 3, determine the opening size of the top feed inlet of the upper collecting hopper 11, assuming it is a square, and determine the side length as L1; based on the abrasive inlet size of the jet pump 4, determine the opening diameter of the bottom discharge outlet of the lower collecting hopper 12 as D1.

[0036] S2: The angle between the wall of the upper collecting hopper 11 and the horizontal plane is set to 60°. Let the side length of its bottom outlet be L2 and its height be H1. The calculation formula is: H1 = tan60° × (L1 - L2). The angle between the wall of the lower collecting hopper 12 and the horizontal plane is set to 60°. Let the diameter of its top inlet be D2 and its height be H2. The calculation formula is: H2 = tan60° × (D2 - D1) / 2. The reserved installation space for the flushing hole 21 is set to 30mm. The upper flange 13 is fixedly connected 50mm above the bottom outlet of the upper collecting hopper 11. The dimensional parameters must satisfy: D2 ≥ (L2 / 2) + (50 / tan30°) + 30 = (L2 / 2) + 58; L2 ≥ D1. The value of H1+H2 is determined based on the on-site installation height H, and H1≥H2 must be satisfied. At the same time, in order to optimize the slurry-making effect of the flushing hole 21 on the abrasive, the height of H2 should be as small as possible while ensuring processing feasibility.

[0037] S3: Calculate and determine the specific values ​​of H1, H2, D2, and L2 based on the above parameters, and then determine the dimensions of the upper flange 13 and the lower flange 14 based on D2 and L2.

[0038] S4: Determine the bolt connection hole positions of the upper flange 13 and the lower flange 14, as well as the opening position of the flushing hole 21 on the upper flange 13, and then complete the processing of the water jet abrasive collection device.

[0039] In this embodiment, the specific installation steps include: S1': Align the top feed inlet of the upper collection hopper 11 with the bottom opening of the cleaning box 3 precisely to ensure that there is no misalignment at the connection edge; fix the connection between the two by welding. After welding, focus on the weld seam of the inner wall of the hopper. Grind the weld seam to make the surface smooth and flat, and completely flush with the base material of the hopper wall. Ensure that there are no defects such as protrusions, depressions or weld beads on the inner surface of the hopper wall, and avoid the abrasive from sticking and accumulating on the wall due to unevenness when it falls. S2': Embed the rubber sealing ring into the sealing mounting groove on the upper end face of the lower flange 14, and apply grease evenly to the surface of the sealing ring to enhance the sealing performance and prevent the sealing ring from shifting during installation; Align the bolt connection holes of the upper flange 13 and the lower flange 14 one by one to ensure that the hole positions are completely aligned; Insert the connecting bolts 15 and tighten them evenly in sequence to complete the assembly and fixation of the lower collecting hopper 12 and the upper collecting hopper 11. S3': Connect the external water pipe to the flushing hole 21; S4': Fix the abrasive inlet of the jet pump 4 to the bottom outlet of the lower collection hopper 12 with bolts to complete the installation of the water jet abrasive collection device.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waterjet abrasive collection device, comprising a collection assembly (1) for receiving and conveying used abrasive, and a flushing assembly (2) disposed on the collection assembly (1) for assisting abrasive flow, characterized in that, The collection component (1) includes an upper collection hopper (11) and a lower collection hopper (12) that both have downward-facing openings. The bottom outlet of the upper collection hopper (11) is smaller than the top inlet of the lower collection hopper (12). The upper collection hopper (11) is connected above the lower collection hopper (12) and forms a connection transition zone at the connection. The flushing component (2) is located in the connection transition zone.

2. The waterjet abrasive collecting device according to claim 1, characterized in that, The flushing assembly (2) includes a plurality of flushing holes (21) surrounding the connecting transition area, the flushing holes (21) being connected to an external water pipe.

3. The waterjet abrasive collecting device according to claim 2, characterized in that, The flushing hole (21) is inclined toward the center of the discharge port of the lower collecting hopper (12).

4. The waterjet abrasive collecting device according to claim 2, characterized in that, The upper collecting hopper (11) has an upper flange (13) fixed to the outer periphery of its bottom discharge port, and the lower collecting hopper (12) has a lower flange (14) fixed to the outer periphery of its top inlet port. The upper flange (13) and the lower flange (14) have several bolt connection holes on their outer periphery and are fixedly connected by connecting bolts (15) inserted therethrough. The connection transition area is located between the outer wall of the upper collecting hopper (11) connected to the upper flange (13) and the inner wall of the lower collecting hopper (12). The flushing hole (21) is located in the connection transition area of ​​the upper flange (13).

5. The waterjet abrasive collecting device according to claim 4, characterized in that, The upper end face of the lower flange (14) is provided with a sealing installation groove along its circumference, and a rubber sealing ring is provided in the sealing installation groove.

6. The waterjet abrasive collecting device according to any one of claims 1-5, characterized in that, The bottom outlet of the upper collecting hopper (11) is 30mm-50mm lower than the top inlet of the lower collecting hopper (12).

7. The waterjet abrasive collection device of any of claims 1-5, wherein, The angle between the wall of the upper collecting hopper (11) and the wall of the lower collecting hopper (12) and the horizontal plane is not less than 60 degrees.

8. A waterjet abrasive circulation system, characterized in that, The water jet abrasive collection device as described in any one of claims 1-7 further includes a cleaning tank (3) and a jet pump (4), wherein the upper end of the water jet abrasive collection device is connected to the bottom of the cleaning tank (3), and the lower end of the water jet abrasive collection device is connected to the abrasive inlet of the jet pump (4).

9. The waterjet abrasive recirculation system of claim 8, wherein, The bottom of the cleaning box (3) is connected to multiple water jet abrasive collecting devices. The upper collecting hopper (11) is a square cone-shaped collecting hopper with a square cross-section. The shape and size of the top inlets of the multiple square cone-shaped collecting hoppers are matched with the bottom outlet of the cleaning box (3).

10. The waterjet abrasive circulation system according to claim 8, characterized in that, The lower collecting hopper (12) is a conical collecting hopper, and the shape and size of its bottom discharge port match the abrasive inlet of the jet pump (4).

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