Abrasive grain media mixing valve

Abstract

The utility model relates to a grinding particle medium mixing valve, belongs to the abrasive medium jet flow technical field, and motor speed reducer shell and valve body fixed connection. The output shaft of motor speed reducer is fixedly connected with valve rod, and the valve rod is radially provided with valve rod hole. The valve body is provided with valve body hole. The valve rod is inserted in the valve body, and the valve rod hole and the valve body hole are in position correspondence. The valve rod is provided with a high pressure ring on both sides of the valve rod hole. The high pressure ring is provided with O type sealing ring and high pressure guide ring on the outside. The valve rod on the outside of high pressure ring is provided with a copper pie ring. Each copper pie ring is fixed on the valve body through fixed nut on the outside. The O type sealing ring is located in the inside of high pressure guide ring. The utility model provides the grinding particle valve with telescopic grinding particle pipe, and the grinding particle medium mixing valve with better sealing, and the mixing is more uniform compared with the vortex medium flexible mixing mode.

Description

Technical Field

[0001] This invention belongs to the field of abrasive media jet technology, and particularly relates to an abrasive media mixing valve. Background Technology

[0002] Current abrasive media jetting equipment involves a simple, direct mixing of the media and abrasive particles (e.g., the media is a fluid liquid such as water or liquid resin, and the abrasive particles are diamond, silicon carbide, or zirconium oxide, or a mixture thereof in a set ratio). Incomplete mixing can sometimes lead to blockage of the main discharge pipe. The abrasive particle outlet valve requires frequent and cumbersome control procedures, and the abrasive media mixing valve, relying solely on rubber sealing rings, is prone to leaks. Ordinary media and abrasive mixing methods are prone to uneven mixing. Furthermore, the proposed technology of using a mixture of media and abrasive particles for repairing and grinding rails requires a complex equipment structure and uneven mixing because the abrasive particles are added at the water nozzle, each nozzle needs a feeding device. Summary of the Invention

[0003] The purpose of this invention is to provide an abrasive media mixing valve with better sealing performance.

[0004] Abrasive media mixing valve, comprising a motor reducer, valve body and valve stem.

[0005] Its features are:

[0006] The motor reducer housing is fixedly connected to the valve body.

[0007] The output shaft of the motor reducer is fixedly connected to the valve stem, and the valve stem has a valve stem hole in the radial direction.

[0008] The valve body has a valve body hole.

[0009] The valve stem is inserted into the valve body, and the valve stem hole and the valve body hole are positioned accordingly.

[0010] A high-pressure ring is fitted on the valve stem on both sides of the valve stem hole.

[0011] An O-ring and a high-pressure guide ring are fitted on the outside of the high-pressure ring.

[0012] A copper disc ring is fitted on the valve stem outside the high-pressure ring.

[0013] Each copper disc ring is secured to the valve body by a fixing nut on its outer side.

[0014] The O-ring is located inside the high-pressure conductor ring.

[0015] Its advantages are:

[0016] This invention features a bypass pipe to unclog the discharge pipe. It also includes a more easily controllable abrasive discharge valve and a better-sealed abrasive media mixing valve, resulting in more uniform mixing through a flexible mixing method. The structure of this invention can be used with existing abrasive waterjet cutting machines for material feeding, providing a new feeding method. Furthermore, the structure of this invention can be used with current abrasive waterjet repair and grinding systems, offering more uniform mixing and more convenient unified feeding compared to existing equipment. Multiple grinding nozzles spray abrasive streams, forming an abrasive flow field that works together to repair and grind steel rails in subways or trains. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Example 1.

[0018] Figure 2 This is a schematic diagram of the structure of Example 4.

[0019] Figure 3 This is a top view of the flexible mixture in Example 4.

[0020] Figure 4 This is a schematic diagram of the structure of Example 2 (closed).

[0021] Figure 5 This is a structural schematic diagram of Example 2 (open).

[0022] Figure 6 This is a schematic diagram of the structure of Example 3.

[0023] Figure 7 for Figure 6 Enlarged view of part A in the middle.

[0024] Figure 8 This is a schematic diagram of Example 5.

[0025] Figure 9 This is a schematic diagram of Example 6.

[0026] 1. Abrasive material box; 2. Generating tank; 3. Abrasive valve; 4. Pump; 5. Medium valve; 6. Bypass valve; 7. Gas outlet valve; 8. Medium outlet valve; 9. Abrasive medium mixing valve; 10. Weighing scale; 11. Generating tank inlet medium pipe; 12. T-joint; 13. Discharge pipe valve; 14. Main discharge pipe; 15. Generating tank inlet medium port.

[0027] 16. Abrasive inlet tube, 17. Guide tube, 18. Rubber sealing ring, 19. Abrasive outlet, 20. Abrasive inlet tube flange, 21. Bellows, 22. Valve seat bracket, 23. Limit bracket.

[0028] 24. Motor reducer, 25. Valve body, 26. Valve stem, 27. Valve stem hole, 28. Valve body hole, 29. O-ring seal, 30. High pressure ring, 31. High pressure guide ring, 32. Copper disc ring, 33. Fixing nut, 34. Connecting rod. Detailed Implementation

[0029] Example 1

[0030] The intelligent control ultra-high pressure (260 MPa) abrasive flow generator includes multiple abrasive flow generators. In this embodiment, two abrasive flow generators are used.

[0031] The abrasive flow generator includes an abrasive feed box 1 and a generating tank 2.

[0032] An abrasive valve 3 is installed on the connecting pipeline between the bottom outlet of the abrasive hopper 1 and the top inlet of the abrasive generator 2.

[0033] Pump 4 has a pumping medium pipe. After the pumping medium pipe is connected to the tap, it is split into at least two paths. Each path is connected to a tee connector 12. One path is equipped with a medium valve 5. Then, it is connected to at least one generator tank inlet 15 of generator tank 2 through at least one generator tank inlet medium pipe 11.

[0034] A bypass valve 6 is provided at the other outlet of the three-way connector 12.

[0035] Multiple generating tanks 2 are equipped with abrasive media mixing valves 9 at the bottom discharge port pipelines, and the pipelines are connected to the inlet of the main discharge pipe 14.

[0036] The bypass pipeline outlet of bypass valve 6 is connected below abrasive medium mixing valve 9 and in front of the inlet of main discharge pipe 14.

[0037] The generator tank 2 is equipped with an exhaust valve 7 and a medium outlet valve 8, which can be opened or closed as needed.

[0038] A discharge valve 13 is provided on the main discharge pipe 14.

[0039] Furthermore, a weighing scale 14 (which may be an electronic scale) is provided at the bottom of the generating tank 2.

[0040] The different opening and closing amounts of the medium valve 5 and the bypass valve 6 can control the amount of medium going to the generator tank 2 and the main discharge pipe 14. The bypass can use the medium to unclog the pipeline and reduce blockages.

[0041] Multiple abrasive flow generators can feed materials in turn as needed.

[0042] In this embodiment, one liquid medium enters the generator tank 2.

[0043] The medium is a liquid medium, such as water, and the abrasive particles are diamond abrasive.

[0044] Pump 4 is connected to the medium tank.

[0045] Example 2

[0046] Example 2 is basically the same as Example 1, except that:

[0047] The abrasive valve 3 typically requires separate control. This invention provides a 90 kpsi intelligent feed self-sealing valve that automatically extends and opens the abrasive inlet pipe 16 based on the negative pressure generated by the medium entering the generator tank 2, and retracts and closes when the medium stops flowing. Psi stands for pounds per square inch, and k stands for kilometre.

[0048] A 90Kpsi intelligent feed self-sealing valve includes an abrasive inlet tube 16 and a guide tube 17. The abrasive inlet tube 16 has multiple abrasive outlets 19 with an upward circumferential opening at its bottom. The abrasive inlet tube 16 is a circular tube.

[0049] A guide tube 17 is sleeved on the outside of the abrasive inlet tube 16, and a rubber sealing ring 18 (high pressure sealing ring) is fixed under the guide tube 17.

[0050] An abrasive inlet tube flange 20 is provided above the abrasive inlet tube 16, and a spring 35 is provided between the abrasive inlet tube flange 20 and the upper edge of the guide tube 17.

[0051] The guide tube 17 is fixed to the abrasive box 1 by the valve seat bracket 22.

[0052] The connecting pipe between the abrasive inlet flange 20 above the abrasive inlet pipe 16 and the abrasive outlet of the abrasive hopper 1 is a corrugated pipe 21.

[0053] The bottom of the guide tube 17 is fitted with a pipe that connects to the abrasive inlet at the top of the generator tank 2.

[0054] The bottom of the abrasive feed box 1 has a limit bracket 22 above the flange 20 of the abrasive feed tube.

[0055] The limit bracket 22 can also be fixed on the valve seat bracket 22.

[0056] Its working principle is as follows:

[0057] When no abrasive particles are fed in, the spring 35 pushes the abrasive tube flange 20 upward, the abrasive tube flange 20 is held in place by the limiting bracket 23, the abrasive tube 16 retracts upward, and the abrasive outlet 19 retracts into the rubber sealing ring 18.

[0058] When the medium is introduced, due to the negative pressure generated in the generating tank 2, the inlet abrasive tube 16 will be drawn downward, the inlet abrasive tube flange 20 compresses the spring 35, the inlet abrasive tube 16 extends downward, and the outlet abrasive tube 19 extends out of the rubber sealing ring 18.

[0059] The pipe connecting the abrasive inlet flange 20 of the abrasive inlet pipe 16 and the abrasive hopper 1 is a corrugated pipe 21, which is adapted to the movement of the abrasive inlet pipe 16.

[0060] Example 3

[0061] Example 3 is basically the same as Example 1, except that:

[0062] Abrasive media mixing valve 9 can usually use ball valves, but their sealing performance is poor. The present invention provides a valve with better sealing performance.

[0063] The abrasive media mixing valve 9 includes a motor reducer 24, a valve body 25, and a valve stem 26.

[0064] The housing of the motor reducer 24 is fixed to the bottom of the generator tank 2.

[0065] The motor reducer 24 housing and the valve body 25 are fixedly connected by a connecting rod 34.

[0066] The output shaft of the motor reducer 24 is fixedly connected to the valve stem 26, and the valve stem 26 has a valve stem hole 27 in the radial direction.

[0067] The valve body 25 has a valve body hole 28.

[0068] The valve stem 26 is inserted into the valve body 25, and the valve stem hole 27 and the valve body hole 28 are in corresponding positions.

[0069] A high-pressure ring 30 (rubber) is fitted on the valve stem 26 on both sides of the valve stem hole 27.

[0070] An O-ring 29 (rubber high-pressure sealing ring) and a high-pressure guide ring 31 (stainless steel) are fitted on the outer side of the high-pressure ring 30. The O-ring 29 is located inside the high-pressure guide ring 31.

[0071] A copper disc ring 32 is fitted on the valve stem 26 outside the high-pressure ring 30.

[0072] Each copper disc ring 32 is tightened and fixed to the valve body 25 by a fixing nut 33 on its outer side.

[0073] When the motor reducer 24 drives the valve stem 26, the valve stem hole 27 and the valve body hole 28 are connected, and the abrasive medium mixing valve 9 is opened. When the valve stem hole 27 is rotated to a misaligned position, the abrasive medium mixing valve 9 is closed.

[0074] Because the copper disc ring 32 has a certain degree of elasticity, it will deform to a certain extent during sealing, thus playing a role in elastic compensation.

[0075] Example 4

[0076] Example 4 is basically the same as Example 1, except that:

[0077] The outlet of the medium inlet pipe 11 splits into two paths.

[0078] The generating tank 2 has two generating tank inlets 15 that are opposite each other on the left and right and staggered front and back.

[0079] The outlet of the medium inlet pipe 11 is divided into two paths, each corresponding to a medium inlet port 15 of the medium inlet pipe.

[0080] The bottom of the generator tank 2 is a concave conical surface, and two opposite and staggered generator tank inlets 15 are set on the conical surface.

[0081] When the medium is introduced, a relative vortex will be formed, which allows the medium and abrasive particles to mix better, resulting in a flexible mixture.

[0082] The medium flows from a portion of pump 4 into generator tank 2 or through a bypass valve to the front of main discharge pipe 14.

[0083] Abrasive particles enter the generating tank 2 from the abrasive feed box 1.

[0084] Abrasive particles and media are mixed in the generating tank 2 and supplied from the main discharge pipe 14.

[0085] The 260 MPa ultra-high pressure abrasive flow mixing method is characterized by comprising the following steps:

[0086] Two streams of medium flow enter the generating tank 2 from the concave surface of the bottom cone. The two generating tank inlets 15, which are opposite to each other and staggered front and back, form opposing vortices.

[0087] The valve of Example 2, the valve of Example 3, and the concave bottom surface of Example 4 can be used together in the structure of Example 1.

[0088] Example 5

[0089] Application of intelligent control ultra-high pressure abrasive flow generator in digital abrasive flow precision cutting machine.

[0090] The intelligent control ultra-high pressure abrasive flow generator mentioned in this invention can be applied to existing abrasive waterjet cutting machines to provide abrasive flow for existing three-axis, four-axis or five-axis waterjet cutting machines.

[0091] For example, the outlet of the main discharge pipe 14 is connected to the inlet of the cutting nozzle 35 of an existing waterjet cutting machine.

[0092] Example 6

[0093] Application of intelligent control ultra-high pressure abrasive flow generator in digital trailer-mounted abrasive flow field rail grinding device.

[0094] The intelligent control ultra-high pressure abrasive flow generator mentioned in this invention can be applied to existing abrasive flow field rail grinding devices to provide an abrasive flow field.

[0095] For example: Abrasive flow field rail polishing device: 2021116706537, a rail polishing method and equipment based on machine vision and water jet; 2022104585733, an intelligent water jet rail profile polishing system based on image data processing; 2022100644003, an adaptive water jet rail polishing method and equipment based on expert system; or 2021115420477, a geometric contour fitting and repair method for water jet repair of rails, for medium-sized applications.

[0096] For example: the main discharge pipe 14 is connected to the inlet of the grinding nozzle 36, and the grinding nozzle 36 is set on the nozzle bracket of the grinding rail.

Claims

1. An abrasive media mixing valve, comprising a motor reducer (24), a valve body (25), and a valve stem (26); characterized in that: The housing of the motor reducer (24) is fixedly connected to the valve body (25); the output shaft of the motor reducer (24) is fixedly connected to the valve stem (26), and the valve stem (26) has a valve stem hole (27) in the radial direction; the valve body (25) has a valve body hole (28); the valve stem (26) is inserted into the valve body (25), and the valve stem hole (27) and the valve body hole (28) are in corresponding positions; a high-pressure ring (30) is fitted on the valve stem (26) on both sides of the valve stem hole (27); an O-ring seal (29) and a high-pressure guide ring (31) are fitted on the outside of the high-pressure ring (30); a copper disc ring (32) is fitted on the valve stem (26) on the outside of the high-pressure ring (30); each copper disc ring (32) is fixed to the valve body (25) by a fixing nut (33); The motor reducer (24) drives the valve stem (26). When the valve stem hole (27) and the valve body hole (28) are connected, the abrasive medium mixing valve opens. When the valve stem hole (27) rotates to a misaligned position, the abrasive medium mixing valve closes.

2. The abrasive media mixing valve according to claim 1, characterized in that: The O-ring (29) is located inside the high-pressure guide ring (31).

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