Continuous sand supply reversing valve of mining water cutting machine with double abrasive tanks

Abstract

The utility model discloses a continuous sand supply reversing valve of a mining water cutting machine with double abrasive tanks, which comprises a liquid outlet hole, a lower valve block, a lower slide way, a reversing ball, an O-shaped ring, a left O-shaped ring, a left polytetrafluoroethylene pad, a left one-way valve seat, a left liquid inlet, a hexagon socket screw, a right liquid inlet, an upper valve block, a right one-way valve seat, a right polytetrafluoroethylene pad and a right O-shaped ring. Therefore, the continuous sand supply reversing valve of the mining water cutting machine with the double abrasive tanks is formed.

Description

Technical Field

[0001] The utility model relates to a continuous sand supply reversing valve for a mining water cutting machine with double abrasive tanks, in particular to a reversing device which switches to another sand supply device to continue supplying liquid when mixed liquid in one sand supply device is about to run out, thereby being able to continuously supply sand without interruption. Background Art

[0002] At present, when cutting large objects, the double abrasive tank water jet cutting machine in coal mines requires two abrasive tanks to work continuously. When the pomegranate sand in one abrasive tank is about to run out, it is necessary to stop the machine and immediately connect the high-pressure hose of the cutting nozzle to the liquid outlet of the other abrasive tank to continue supplying liquid to the cutting nozzle to cut the object. In this way, a pause point will appear in the cutting process, and continuous cutting cannot be achieved. This requires the installation of a continuous sand supply reversing valve between the two abrasive tanks. However, there is currently no device that can automatically reverse the continuous liquid supply without disassembling and replacing the high-pressure hose to solve this problem. Utility Model Content

[0003] The utility model is to solve the following problems: "a double abrasive tank water jet cutting machine in an underground coal mine needs two abrasive tanks to work continuously when cutting large objects. When the pomegranate sand in one abrasive tank is about to be exhausted, the machine needs to be stopped, and the high-pressure hose of the cutting nozzle is immediately connected to the liquid outlet of the other abrasive tank to continue to supply liquid to the cutting nozzle to cut the object. In this way, a pause point will appear in the cutting process, and continuous cutting cannot be achieved. Therefore, a continuous sand supply reversing valve needs to be installed between the two abrasive tanks. However, there is no device that can automatically reverse the continuous liquid supply without disassembling and replacing the high-pressure hose to solve this problem." The utility model proposes a series of difficult problems.

[0004] "The hydraulic supports in coal mines are injected with high-power single-unit emulsion pumps with large flow and high pressure, which will cause a lot of electricity consumption. Therefore, a double pump group with large flow and low pressure or small flow and high pressure is needed. This pump group needs to be installed with a dual-medium automatic reversing valve; however, there is currently no device that can use different media and automatically reverse at different flow rates and pressures to solve this problem." In order to solve this series of problems, a double-abrasive tank mine water cutting machine continuous sand supply reversing valve was proposed.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A double abrasive tank mining water cutting machine continuous sand supply reversing valve, comprising a liquid outlet 1, a lower valve block 2, a lower slide 3, a reversing ball 4, an O-ring 5, a left O-ring 6, a left PTFE pad 7, a left one-way valve seat 8, a left liquid inlet 9, a hexagon socket bolt 10, a right liquid inlet 11, an upper valve block 12, a right one-way valve seat 13, a right PTFE pad 14, and a right O-ring 15, characterized in that: the reversing ball 4 is placed in the lower slide 3, the O-ring 5 is placed around the lower slide 3, the slide 3 is placed in the lower valve block 2, and the liquid outlet 1 is opened at the bottom of the lower valve block 2 The left O-ring 6 and the left PTFE pad 7 are respectively sleeved on the left one-way valve seat 8, and the left one-way valve seat 8 is installed on the lower left side of the upper valve block 12; the right PTFE pad 14 and the right O-ring 15 are respectively sleeved on the right one-way valve seat 13, and the right one-way valve seat 13 is installed on the lower right side of the upper valve block 12; the upper valve block 12 has a left liquid inlet 9 on the left side and a right liquid inlet 11 on the right side. The upper valve block 12 is fixed to the lower valve block 2 with a hexagon socket bolt 10 to form a continuous sand supply reversing valve for a double abrasive tank mining water cutting machine.

[0007] In order to further facilitate the control operation, a left O-ring 6 and a left PTFE pad 7 are put on the left one-way valve seat 8 to prevent the liquid from flowing back.

[0008] The utility model has the following advantages over the existing reversing device:

[0009] 1. With automatic reversing function: the lower valve block 2 is equipped with a lower slideway 3 and a reversing ball 4, which plays an automatic reversing role.

[0010] 2. It has the function of supplying two media: two liquid inlet holes are made on the upper valve block 12, the left liquid inlet 9 and the right liquid inlet 11, which can supply two different liquids to the valve block at the same time.

[0011] 3. Compact structure: The entire automatic reversing valve has a compact structure, small size, light weight and is easy to install.

[0012] 4. Simple structure: A double abrasive tank mining water cutting machine continuous sand supply reversing valve has compact structure, light weight, complete specifications and models, easy installation, and easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below based on the drawings and embodiments.

[0014] Figure 1 It is a double abrasive tank mining water cutting machine continuous sand supply reversing valve composition structure diagram;

[0015] In the figure:

[0016] Liquid outlet 1, lower valve block 2, lower slide channel 3, reversing ball 4, O-ring 5, left O-ring 6, left PTFE pad 7, left one-way valve seat 8, left liquid inlet 9, hexagon socket bolt 10, right liquid inlet 11, upper valve block 12, right one-way valve seat 13, right PTFE pad 14, right O-ring 15. DETAILED DESCRIPTION

[0017] A double abrasive tank mining water cutting machine continuous sand supply reversing valve, comprising a liquid outlet 1, a lower valve block 2, a lower slide 3, a reversing ball 4, an O-ring 5, a left O-ring 6, a left PTFE pad 7, a left one-way valve seat 8, a left liquid inlet 9, a hexagon socket bolt 10, a right liquid inlet 11, an upper valve block 12, a right one-way valve seat 13, a right PTFE pad 14, and a right O-ring 15, characterized in that: the reversing ball 4 is placed in the lower slide 3, the O-ring 5 is placed around the lower slide 3, the slide 3 is placed in the lower valve block 2, and the liquid outlet 1 is opened at the bottom of the lower valve block 2 The left O-ring 6 and the left PTFE pad 7 are respectively sleeved on the left one-way valve seat 8, and the left one-way valve seat 8 is installed on the lower left side of the upper valve block 12; the right PTFE pad 14 and the right O-ring 15 are respectively sleeved on the right one-way valve seat 13, and the right one-way valve seat 13 is installed on the lower right side of the upper valve block 12; the upper valve block 12 has a left liquid inlet 9 on the left side and a right liquid inlet 11 on the right side. The upper valve block 12 is fixed to the lower valve block 2 with a hexagon socket bolt 10 to form a continuous sand supply reversing valve for a double abrasive tank mining water cutting machine.

[0018] When working, the mixed water of the mining water cutting machine enters the upper valve block 12 from the right liquid inlet 11, passes through the right one-way valve seat 13 and enters the lower slide 3. At the same time, the mixed water pushes the reversing ball 4 from the right to the left. The reversing ball 4 presses the left one-way valve seat 8 under the action of water pressure to prevent the mixed water from flowing back, and the high-pressure mixed water flows out from the liquid outlet 1; when the mixed liquid in the right liquid inlet 11 is about to be exhausted, the mixed water on the right enters the upper valve block 12 from the left liquid inlet 9, passes through the left one-way valve seat 8 and enters the lower slide 3. The mixed water enters the slideway 3, and at the same time, the mixed water pushes the reversing ball 4 from the left to the right. Under the action of water pressure, the reversing ball presses the right one-way valve seat 13 to prevent the mixed water from flowing back, and the high-pressure mixed water flows out from the liquid outlet 1; the mixed water enters from the right liquid inlet 11, flows out from the liquid outlet 1, and then enters the liquid outlet 1 from the left liquid inlet 9 and flows out. In this way, the reversal is repeated, and the liquid outlet 1 will have uninterrupted mixed water outflow, which plays the role of a continuous sand supply reversing valve for a double abrasive tank mining water cutting machine.

[0019] When stopping working, stop supplying liquid to the left liquid inlet 9 and the right liquid inlet 11, clean the whole device with clean water, and place it in a ventilated and dry place.

[0020] Practice has proved that a double abrasive tank mining water cutting machine continuous sand supply reversing valve manufactured according to the above implementation scheme can normally switch the liquid supply in the pressure range of 25MPa, 35MPa, and 45MPa; the flow rate can normally switch the liquid supply in the flow range of 30lpm, 60lpm, and 90lpm.

Claims

1. A continuous sand supply reversing valve for a double abrasive tank mining water cutting machine, comprising a liquid outlet (1), a lower valve block (2), a lower slideway (3), a reversing ball (4), an O-ring (5), a left O-ring (6), a left polytetrafluoroethylene pad (7), a left check valve seat (8), a left liquid inlet (9), a hexagon socket bolt (10), a right liquid inlet (11), an upper valve block (12), a right check valve seat (13), a right polytetrafluoroethylene pad (14), and a right O-ring (15), characterized in that: The reversing ball (4) is placed in the lower slideway (3), the O-ring (5) is placed around the lower slideway (3), the slideway (3) is placed in the lower valve block (2), and the liquid outlet (1) is opened below the lower valve block (2); the left O-ring (6) and the left polytetrafluoroethylene pad (7) are respectively sleeved on the left one-way valve seat (8), and the left one-way valve seat (8) is installed on the lower left side of the upper valve block (12); the right polytetrafluoroethylene pad (14) and the right O-ring (15) are respectively sleeved on the right one-way valve seat (13), and the right one-way valve seat (13) is installed on the lower right side of the upper valve block (12); the upper valve block (12) is provided with a left liquid inlet (9) on the left side and a right liquid inlet (11) on the right side, and the upper valve block (12) and the lower valve block (2) are fixed together with hexagon socket bolts (10), thereby forming a continuous sand supply reversing valve for a double abrasive tank mining water cutting machine.

2. A continuous sand supply reversing valve for a double abrasive tank mining water cutting machine according to claim 1, characterized in that The mixed water of the mining water cutting machine enters the upper valve block (12) from the right liquid inlet (11), passes through the right one-way valve seat (13) and enters the lower slideway (3). At the same time, the mixed water pushes the reversing ball (4) from the right to the left. Under the action of water pressure, the reversing ball (4) presses the left one-way valve seat (8) to prevent the mixed water from flowing back. The high-pressure mixed water flows out from the liquid outlet (1); when the mixed liquid in the right liquid inlet (11) is about to be exhausted, the mixed water on the right side enters the upper valve block (12) from the left liquid inlet (9), passes through the left one-way valve seat (8) When the mixed water enters the lower slide (3), the mixed water pushes the reversing ball (4) from the left side to the right side. Under the action of the water pressure, the reversing ball presses the right one-way valve seat (13) to prevent the mixed water from flowing back. The high-pressure mixed water flows out from the liquid outlet (1). The mixed water enters from the right liquid inlet (11), flows out from the liquid outlet (1), and then enters the liquid outlet (1) from the left liquid inlet (9) to flow out. In this way, the reversal is repeated, and the liquid outlet (1) has uninterrupted mixed water flowing out, which plays the role of a continuous sand supply reversing valve for a double abrasive tank mining water cutting machine.

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