Pulse water jet indirect strengthening device

Abstract

The utility model relates to the technical field of pulse water jet, in particular to a pulse water jet indirect strengthening device which comprises a feeding assembly, a pulse jet assembly and a driving assembly. The feeding assembly comprises a water supply tank, a first filter, a water pump, a safety valve, a check valve, a shot tank and a stop valve. The pulse jet flow assembly comprises a second filter, a three-column reciprocating type water pump and a first overflow valve. The driving assembly comprises a cantilever beam. The pulse water jet is sprayed to the shots in the constraint shot spray head, energy is transmitted through the shots to indirectly reinforce the surface of the workpiece to be machined, erosion of the surface of the workpiece to be machined under the action of water flow, water mass and water jet flow pressure can be effectively relieved, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of pulsed water jet technology, and more specifically to a pulsed water jet indirect enhancement device. Background Technology

[0002] Today, the trend in industrial development is to reduce power consumption and cost without compromising surface quality. While conventional waterjet or abrasive waterjet technologies are costly and power-intensive, pulsed waterjet enhancement, as an emerging metal surface modification technology, offers the advantage of generating impact pressure on the target surface that is several times higher than the stagnant pressure produced by conventional waterjet under the same conditions. This results in higher efficiency, and its combination of environmental friendliness, effectiveness, high efficiency, low cost, and flexible controllability makes it widely used in numerous fields such as machinery, chemical engineering, aviation, aerospace, construction, textiles, and metallurgy.

[0003] However, with the research on high-pressure water jets at home and abroad, many studies have shown that while high-pressure water jets strengthen metals through shot peening, the large number of tiny bubbles carried in the water collapse on the metal surface, generating high shock waves, and the effects of water flow, water mass, and water jet kinetic pressure result in severe erosion of the metal surface during shot peening. Utility Model Content

[0004] In response to the shortcomings of existing technologies, the inventors have developed a pulsed water jet indirect strengthening device through long-term practice, which is used to solve the problem of severe erosion caused by existing water jet shot peening to metal surfaces.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pulsed water jet indirect enhancement device includes a feeding assembly, a pulsed jet assembly, and a driving assembly. The feeding assembly includes a water supply tank, a first filter, a water pump, a safety valve, a check valve, a pellet tank, and a shut-off valve. The pulsed jet assembly includes a second filter, a three-column reciprocating water pump, and a first overflow valve. In the feeding assembly, the water supply tank is connected to the feed inlet of the jet nozzle via an inlet pipe. The first filter, water pump, safety valve, check valve, pellet tank, and shut-off valve are sequentially connected in series on the inlet pipe from the water supply tank to the jet nozzle. The jet nozzle has a feed inlet on its left side. In the pulsed jet assembly, the second filter and the three-column reciprocating water pump are sequentially connected in series on the pulsed jet pipeline from the water supply tank to the inlet of the jet nozzle. The inlet pipe of the first overflow valve is connected to the pulsed jet pipeline, and the outlet pipe of the first overflow valve is connected to the water supply tank. The lower end of the jet nozzle is connected to a constrained pellet nozzle. The drive assembly includes a cantilever beam, the water inlet pipe of the jet nozzle passes through the cantilever beam, and a workbench for assembling a DC motor is provided below the jet nozzle. The cantilever beam is operated and controlled by the control panel.

[0007] Furthermore, the outlet of the pellet tank is connected to the inlet end of the pellet pipe used for conveying pellets, and the pellet pipe is equipped with a shut-off valve.

[0008] Furthermore, the outlet end of the pellet tube is connected to the inlet of the jet nozzle.

[0009] Furthermore, the top of the pellet tank is provided with a feeding port, and the feeding port is equipped with a sealing end cap.

[0010] Furthermore, the pellet tank contains a number of pellets, which are aluminum pellets, cast steel pellets, cast iron pellets, ceramic pellets, glass pellets, or plastic pellets.

[0011] Furthermore, the inlet pipe of the jet nozzle is connected to a manual unloading valve, a turbine flow meter, and a precision pressure gauge.

[0012] Furthermore, the jet nozzle has an external thread structure at its bottom, and the constrained shot nozzle has an internal thread structure at its top; the jet nozzle and the constrained shot nozzle are screwed together.

[0013] Furthermore, the outer peripheral wall of the constrained pellet nozzle has several small holes with a diameter smaller than that of the pellet.

[0014] Furthermore, the upper surface of the worktable is provided with clamps to fix the workpiece.

[0015] Furthermore, a pressure relief port is provided on the right side of the jet nozzle, and the pressure relief port is connected to the second overflow valve.

[0016] The beneficial effects of this utility model are:

[0017] This method employs pulsed water jets to spray shot into a constrained shot nozzle, transferring energy through the shot to indirectly strengthen the surface of the workpiece. This effectively mitigates the erosion caused by water flow, water droplets, and water jet pressure, ensuring low cost and low power consumption while maintaining the surface quality of the workpiece. Furthermore, the uniform movement of the cantilever beam above the workpiece further homogenizes surface stress and improves surface roughness. Moreover, the DC motor allows for uniform table rotation, enabling the machining of ring-shaped workpieces, thus broadening its application range. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the jet nozzle of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the confined shot nozzle of this utility model.

[0021] Figure 4 This is a schematic diagram of the assembly of the jet nozzle and the constrained shot nozzle of this utility model.

[0022] Figure 5 This is a schematic diagram of the process flow when the strengthening device of this utility model is used.

[0023] In the attached image:

[0024] 1-Water supply tank, 2-First filter, 3-Three-column reciprocating water pump, 4-First overflow valve, 5-Safety valve, 6-Water pump, 7-Check valve, 8-Shot tank, 9-Sealed end cap, 10-Manual unloading valve, 11-Turbine flow meter, 12-Stop valve, 13-DC motor, 14-Workbench, 15-Clamp, 16-Return water tank, 17-Constrained shot nozzle, 18-Jet nozzle, 19-Precision pressure gauge, 20-Cantilever beam, 21-Operating table, 22-Second filter, 23-Second overflow valve. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0027] See Figures 1-5 The present invention relates to a pulsed water jet indirect enhancement device, comprising a feeding assembly, a pulsed jet assembly, and a driving assembly.

[0028] The feeding assembly includes a water tank 1, a first filter 2, a water pump 6, a safety valve 5, a check valve 7, a pellet tank 8, and a shut-off valve 12. The water tank 1 is connected to the feed inlet of the jet nozzle 18 via an inlet pipe. The first filter 2, water pump 6, safety valve 5, check valve 7, pellet tank 8, and shut-off valve 12 are connected in series on the inlet pipe from the water tank 1 to the jet nozzle 18. The water tank 1 stores water, which is filtered by the first filter 2, pressurized by the water pump 6, passed through the safety valve 5, and then flows into the pellet tank 8 through the check valve 7.

[0029] The jet nozzle 18 has a feed inlet on its left side. The outlet of the shot tank 8 is connected to the inlet of the shot pipe used to transport the shot. The shot pipe is equipped with a shut-off valve 12, and the outlet of the shot pipe is connected to the feed inlet of the jet nozzle 18. The shot tank 8 stores several shot pellets, and the top of the shot tank 8 is equipped with a feeding port with a sealing end cap 9.

[0030] The pellets used in this invention are made of aluminum, cast steel, cast iron, ceramic, glass, or plastic.

[0031] The pulse jet assembly includes a second filter 22, a three-column reciprocating water pump 3, and a first overflow valve 4. The second filter 22 and the three-column reciprocating water pump 3 are connected in series on the pulse jet pipeline from the water supply tank 1 to the inlet of the jet nozzle 18. The inlet pipe of the first overflow valve 4 is connected to the pulse jet pipeline, and the outlet pipe of the first overflow valve 4 is connected to the water supply tank 1.

[0032] A manual unloading valve 10, a turbine flow meter 11, and a precision pressure gauge 19 are connected to the water inlet pipe of the jet nozzle 18. By adjusting the manual unloading valve 10 and observing the precision pressure gauge 19, water can be precisely and controllably introduced into the jet nozzle 18 through the turbine flow meter 11 to meet the requirements of different jet pressures.

[0033] The lower end of the jet nozzle 18 is connected to the constrained shot nozzle 17. The bottom of the jet nozzle 18 has an external thread structure, and the top of the constrained shot nozzle 17 has an internal thread structure. The jet nozzle 18 and the constrained shot nozzle 17 are connected by the thread structure.

[0034] The outer peripheral wall of the constrained shot nozzle 17 has several small holes with a diameter smaller than that of the shot, which are used to prevent the shot from leaking out and to drain water. The constrained shot nozzle 17 of different lengths can be replaced according to different processing requirements to achieve different jet distances.

[0035] The drive assembly includes a cantilever beam 20, through which the inlet pipe of the jet nozzle 18 passes. Below the jet nozzle 18 is a worktable 14 equipped with a DC motor 13, which is mounted on a return water tank 16 to recover water and shot. A clamp 15 is provided on the upper surface of the worktable 14 to fix the workpiece. The cantilever beam 20 is moved and positioned by an operating table 21. The operating table 21 moves the cantilever beam 20 uniformly above the workpiece, further ensuring uniform surface stress and a good surface roughness. The DC motor 13 is electrically connected to the operating table 21. The operating table 21 controls the DC motor 13, causing the worktable 14 to rotate at a uniform speed to process the ring-shaped workpiece.

[0036] The jet nozzle 18 has a pressure relief port on the right side, which is connected to the second overflow valve 23. This port is used to directly return some of the high-pressure water to the return water tank 16, release excessive pressure, avoid system overload, and achieve the functions of pressure stabilization, unloading, and safety protection.

[0037] In use, the strengthening device of this utility model first fixes the workpiece to be processed on the worktable, then the control panel moves the cantilever beam to adjust the position of the constraint shot nozzle so that it is close to the workpiece. Then the feeding component sends the shot into the constraint shot nozzle. After the preparation is completed, the pulse water jet component is turned on, the pulse water jet impacts the shot, the shot transfers energy to strengthen the surface of the workpiece, and the shot is recovered after the strengthening is completed, and the work ends.

[0038] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A pulsed water jet indirect intensifier apparatus characterized by, It comprises a feeding assembly, a pulse jet assembly and a driving assembly; the feeding assembly comprises a water supply tank (1), a first filter (2), a water pump (6), a safety valve (5), a check valve (7), a pellet tank (8) and a stop valve (12); the pulse jet assembly comprises a second filter (22) and a three-column reciprocating water pump (3). In the feeding assembly, the water supply tank (1) is connected to the inlet of the jet nozzle (18) through a water inlet pipe, and the first filter (2), the water pump (6), the safety valve (5), the check valve (7), the pellet tank (8) and the stop valve (12) are sequentially connected in series on the water inlet pipe from the water supply tank (1) to the jet nozzle (18); the left side of the jet nozzle (18) is provided with an inlet, and the pulse jet assembly comprises the second filter (22) and the three-column reciprocating water pump (3) which are sequentially connected in series on the pulse jet pipe from the water supply tank (1) to the inlet of the jet nozzle (18), the water inlet pipe of the first overflow valve (4) is communicated with the pulse jet pipe, and the water outlet pipe of the first overflow valve (4) is communicated to the water supply tank (1); the lower end of the jet nozzle (18) is connected to the pellet nozzle (17). The driving assembly comprises a cantilever beam (20), the water inlet pipe of the jet nozzle (18) penetrates through the cantilever beam (20), a workbench (14) on which a DC motor (13) is assembled is arranged below the jet nozzle (18), and the cantilever beam (20) is operated and controlled by an operation table (21).

2. A device for indirect strengthening of a pulsed water jet according to claim 1, characterized in that The outlet of the pellet tank (8) is communicated with the inlet end of a pellet pipe for conveying pellets, and the pellet pipe is provided with a stop valve (12).

3. A device for indirect strengthening of a pulsed water jet according to claim 2, characterized in that The outlet end of the pellet pipe is communicated with the inlet of the jet nozzle (18).

4. A device for indirect strengthening of a pulsed water jet according to claim 3, characterized in that The top end of the pellet tank (8) is provided with a pellet feeding port, and the pellet feeding port is provided with a sealing end cover (9).

5. A device for indirect strengthening of a pulsed water jet according to claim 4, characterized in that The pellet tank (8) stores a plurality of pellets, and the pellets are aluminum pellets, cast steel pellets, cast iron pellets, ceramic pellets, glass pellets or plastic pellets.

6. A device for indirect strengthening of a pulsed water jet according to claim 1, characterized in that The water inlet pipe of the jet nozzle (18) is connected with a manual unloading valve (10), a turbine flowmeter (11) and a precision pressure gauge (19).

7. The apparatus of claim 1, wherein the apparatus is a water jet peening device. The bottom of the jet nozzle (18) has an external thread structure, the top of the pellet nozzle (17) has an internal thread structure, and the jet nozzle (18) and the pellet nozzle (17) are screwed.

8. A device for indirect strengthening of a pulsed water jet according to claim 7, characterized in that A plurality of small holes with diameters smaller than that of the pellets are distributed on the outer peripheral wall of the pellet nozzle (17).

9. The apparatus of claim 1, wherein, The upper surface of the workbench (14) is provided with a clamp (15) for fixing a workpiece.

10. The apparatus of claim 1, wherein the apparatus is a pulsed water jet indirect intensifier apparatus. The right side of the jet nozzle (18) is provided with a pressure relief port which is communicated with a second overflow valve (23).

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