Small switch valve for abrasive water jet device

Abstract

The invention relates to a small switch valve for an abrasive water jet device, and aims at solving the problems that an existing switch valve is large in size, low in control precision and insufficient in sealing performance. The valve comprises a valve body formed by butt joint of an upper valve body and a lower valve body, an air cylinder assembly, a symmetrical buckle structure and a sealing assembly. The air cylinder assembly drives a ball body at the tail end of a valve-air cylinder-air cylinder rod through high-pressure air to extrude a hose, and accurate on-off control over abrasive spraying is achieved. The buckle structure is composed of a buckle base, a buckle and a cover, and rapid disassembly, assembly and maintenance of the valve body are achieved. And the sealing assembly is made of a high-temperature-resistant elastic material and is provided with multiple layers of gaskets, so that the sealing performance and the wear resistance in a high-pressure environment are ensured. In addition, the fluid channel is connected through a 304 stainless steel sanitary high-pressure clamp, so that the reliability and the pressure resistance are improved. The device is compact in structure and small in size, can be flexibly integrated in small equipment, has the characteristics of fast response, high control precision and excellent sealing performance, and is suitable for efficient water flow control of an abrasive water jet device.

Description

Technical Field

[0001] The present invention relates to a small on-off valve for an abrasive water jet device, and in particular to a small on-off valve for controlling the water flow in an abrasive water jet device. Background Art

[0002] With the continuous development of industrial technology, abrasive water jet devices have been widely used in various material processing fields. The abrasive water jet device carries abrasive particles through high-pressure water flow to perform processing such as cutting, grinding, or cleaning on workpieces. However, there are some problems in controlling the water flow in existing abrasive water jet devices. Traditional on-off valves are usually large in volume, and installing them on an abrasive water jet device will increase the volume and complexity of the equipment, and the operation is not flexible enough to quickly and accurately control the on-off of the water flow. In addition, the sealing performance of traditional on-off valves is not ideal, and water leakage is likely to occur, affecting the normal operation of the equipment and the processing accuracy. Therefore, developing a small, flexible, and reliable on-off valve is of great significance for improving the performance and application range of abrasive water jet devices. Summary of the Invention

[0003] In order to overcome the defects in the prior art such as poor mobility of the pneumatic on-off valve control device, low control accuracy, large volume, and difficulty in controlling small abrasive water pipe parts, the present invention optimizes the original structure, reduces the internal volume of the valve body, improves the control accuracy of the valve for small parts, and enables the valve to be used in small equipment, improving the utilization rate of water flow.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a small on-off valve for an abrasive water jet device, including an upper valve body, a lower valve body, and a hose. An air inlet hole is provided on the front surface of the upper valve body, a cylinder is provided inside the upper valve body, the cylinder device is arranged in the upper valve body, an upper plate pipe is provided on the upper surface of the upper valve body, the upper plate pipe is fixedly installed on the top of the upper valve body, four holes are provided in the upper plate pipe, four holes are provided on the upper surface of the upper valve body, snap connection devices are provided on both side surfaces of the upper valve body, holes are provided on the surfaces of the snap connection devices, screws are provided on the holes, and the screws are tightly connected to the upper valve body. A bolt hole is provided in the middle of the upper valve body, and the bolt hole penetrates the entire valve body. The hose is arranged between the lower valve body and the upper valve body. A connector is provided above the hose, and the connector is tightly attached to the upper valve body. Screws are provided on the lower end surface of the upper valve body, and the screws are tightly connected to the connector. A connector is provided below the hose, screws are provided on the side surface of the lower valve body, and the screws are tightly connected to the connector. A snap fixation device is provided on the surface of the lower valve body, screws are provided on the surface of the snap fixation device, and the screws are tightly connected to the lower valve body. A pull ring is provided on the snap fixation device, and the lower part of the pull ring is fixedly connected to the snap connection device. A bolt hole is provided on the lower surface of the lower valve body, and the bolt hole penetrates the entire lower valve body.

[0005] Furthermore, the upper end of the pull ring can be fixed on the snap connection device outside the upper valve body, and pulling the snap fixing device can play a role in fixedly connecting the upper and lower valve bodies.

[0006] Furthermore, bolts are provided in the bolt holes of the upper valve body and the lower valve body. The bolts penetrate through the entire upper and lower valve bodies, and the bolt connection plays a role in positioning and a certain degree of fixation.

[0007] The beneficial effects of the present invention are as follows: The pneumatic valve of the present invention simplifies the size of the valve body, is small in volume, and has a compact structure, which is convenient for installation on the abrasive water jet device without increasing the volume and complexity of the equipment. The valve body adopts a pneumatic piston control device, with convenient operation, fast response, and high control precision. The outer surface of the valve body uses a snap to connect the upper and lower valve bodies together, which makes the valve body more flexible and convenient for disassembly and assembly. Description of the Drawings

[0008] The present invention will be further described below in conjunction with the drawings and embodiments.

[0009] Figure 1 It is the front view of the general assembly of the present invention patent.

[0010] Figure 2 It is the left view of the general assembly of the present invention patent.

[0011] Figure 3 It is a schematic diagram along the Figure 2 A-A line in

[0012] Legend: In the figure, 1. Valve - cylinder - upper plate pipe, 2. Valve - upper valve body, 3. Snap base, 4. 304 stainless steel sanitary high-pressure clamp, 5. Valve - lower valve body gasket, 6. Gasket, 7. Snap, 8. Lower valve body, 9. Connector, 10. Pipe, 11. Snap cover, 12. Upper end of the snap, 13. Valve - cylinder - piston, 14. Valve - cylinder - cylinder rod, 15. Valve - cylinder - lower gasket, 16. Hose, 17. Valve - piston gasket. Detailed Description of the Invention

[0013] In order to be able to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described below in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0015] Embodiment 1

[0016] A small switch valve for an abrasive water jet device, as Figures 1 to 3 shown, comprising: the main body structure of the valve body is formed by butt-jointing a valve-upper valve body (2) and a valve-lower valve body (8) through a flange, and a cylinder assembly and a fluid passage are provided inside. The cylinder assembly includes a valve-cylinder-upper plate tube (1), a valve-cylinder-piston (13), a valve-cylinder-cylinder rod (14), and a valve-cylinder-lower gasket (15). Among them, the valve-cylinder-piston (13) is coaxially and rigidly connected to the valve-cylinder-cylinder rod (14), and is fixed inside the valve body through the valve-cylinder-upper plate tube (1) and the valve-lower valve body gasket (5). The lower half of the cylinder rod (14) is processed into a spherical structure and contacts the hose (16). The symmetrically arranged buckle structure includes two buckle bases (3), four buckles (7), two buckle covers (11), and three buckle upper ends (12). The buckle base (3) is buckled with the cover (11) through four buckles (7) symmetrically distributed on both sides, and is quickly locked through the buckle upper end (12) to form a detachable connection for easy maintenance.

[0017] The sealing assembly includes a valve-lower valve body gasket (5), a gasket (6), and a valve-piston gasket (17). Among them, the valve-lower valve body gasket (5) is made of a high-temperature resistant elastic material and is in interference fit with the valve-lower valve body (8); the valve-piston gasket (17) is arranged between the cylinder rod (14) and the piston (13), with a total of three, for enhancing the sealing performance and anti-wear performance. The connector (9) and the pipeline (10) are fixed through two sets of 304 stainless steel sanitary grade high-pressure clamps (4) to form a high-pressure fluid passage. One end of the hose (16) is communicated with the pipeline (10), and the other end extends to the outside of the valve body for transporting the abrasive medium. During operation, high-pressure gas enters the cylinder cavity through the valve-cylinder-upper plate tube (1), pushing the combination of the cylinder rod (14), the piston (13), and the valve-piston gasket (17) downward. The sphere at the end of the cylinder rod (14) squeezes the hose (16) to close its cross-section and block the abrasive jet; after the gas pressure is released, the cylinder rod (14) retreats under the action of a reset mechanism (not marked), and the hose (16) resumes its through-hole diameter to achieve medium conduction. Further, a gasket (6) is provided on the butt-joint surface of the upper valve body (2) and the lower valve body (8) to prevent high-pressure leakage; the exhaust gas recovery hole (17) of the gas collecting box is communicated with the furnace inner cavity through an exhaust gas recovery pipeline (19) to form a closed cycle. In this embodiment, the stroke of the cylinder rod (14) can be accurately controlled by adjusting the air pressure, and the hose (16) is made of a high-elasticity and wear-resistant material to ensure durability under frequent extrusion.

Claims

1. A small switch valve for an abrasive water jet device, characterized in that include: The valve-upper valve body (2) and the lower valve body (8) are butted against each other to form a valve body main structure; the cylinder assembly comprises a valve-cylinder-upper plate tube (1), a valve-cylinder-piston (13), a valve-cylinder-cylinder rod (14) and a valve-cylinder-lower gasket (15), wherein the valve-cylinder-piston (13) and the valve-cylinder-cylinder rod (14) are coaxially connected and fixed inside the valve body through the valve-cylinder-upper plate tube (1) and the valve-lower valve body gasket (5); a symmetrically arranged buckle structure comprises two buckle bases ( 3), four buckles (7), two buckle covers (11) and three buckle upper ends (12), the buckle base is fixed with the cover by the buckle to form a detachable connection; the sealing component includes a valve-lower valve body gasket (5), a gasket (6) and a valve-piston gasket (17), which is used to seal the valve body and the cylinder; the connector (9) and the pipeline (10) are connected by a 304 stainless steel sanitary high-pressure clamp (4) to form a fluid channel; the hose (16) is connected to the fluid channel to complete the medium transmission. High-pressure gas enters the valve-cylinder-upper plate tube (1) and pushes the combination of the valve-cylinder-cylinder rod (15), the valve-cylinder-piston (14) and the valve-piston gasket (17) to move. The ball in the lower half of the valve-cylinder-cylinder rod (14) squeezes the hose (16) downward under the push of the high-pressure gas to prevent the spray of the abrasive inside it.

2. The valve body assembly device according to claim 1, characterized in that: The buckle structure comprises four buckles (7) which are symmetrically distributed on both sides of the buckle base (3) and achieve rapid locking through the buckle upper end (12).

3. The valve body assembly device according to claim 1, characterized in that: The 304 stainless steel sanitary high-pressure clamp (4) is a double clamp configuration, which respectively fixes the connector (9) and the two ends of the pipeline (10).

4. The valve body assembly device according to claim 1, characterized in that: Three valve-piston gaskets (17) are arranged between the valve-cylinder-cylinder rod (14) and the valve-cylinder-piston (13) of the cylinder assembly to enhance sealing performance and wear resistance.

5. The valve body assembly device according to claim 1, characterized in that: The valve-lower valve body gasket (5) is made of high temperature resistant elastic material and is interference fit with the lower valve body (8).

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