Mining automatic reversing valve for different media, different flows and different pressures

Abstract

The utility model discloses a mining automatic reversing valve for different media, different flows and different pressures, which comprises a valve block, a left side O-shaped ring, a left side liquid inlet K-shaped joint, a left side valve seat, a liquid outlet K-shaped joint, an upper side O-shaped ring, a right side valve seat, a right side O-shaped ring, a right side liquid inlet K-shaped joint, a right side fastening O-shaped ring, a right side valve seat fastening screw, a reversing steel ball and a left side fastening O-shaped ring, the components form the mining automatic reversing valve with different media, different flows and different pressures.

Description

Technical Field

[0001] The present invention relates to a mine automatic reversing valve for different media, different flow rates and different pressures, specifically a reversing device that mixes two different liquids with two pressures and two flow rates through two left and right liquid inlet connectors, and then transports them to the hydraulic support in the mine through a high-pressure hose to supply liquid to the hydraulic support twice for pressurization. Background Art

[0002] At present, the injection of liquid into the hydraulic support in the coal mine is carried out by using a high-power single-stage emulsion pump with a large flow rate and high pressure, which will cause a large amount of power consumption. Therefore, a double-stage pump group with a large flow rate and low pressure and a small flow rate and high pressure is required. This pump group needs to be equipped with a double-medium automatic reversing valve. However, there is currently no device that can use different media and can automatically reverse at different flow rates and different pressures to solve this problem. Summary of the Invention

[0003] In order to solve the series of problems such as "the injection of liquid into the hydraulic support in the coal mine is carried out by using a high-power single-stage emulsion pump with a large flow rate and high pressure, which will cause a large amount of power consumption. Therefore, a double-stage pump group with a large flow rate and low pressure and a small flow rate and high pressure is required. This pump group needs to be equipped with a double-medium automatic reversing valve. However, there is currently no device that can use different media and can automatically reverse at different flow rates and different pressures to solve this problem", the present invention provides a mine automatic reversing valve for different media, different flow rates and different pressures.

[0004] The object of the present invention is achieved by the following technical solutions:

[0005] A mine automatic reversing valve for different media, different flow rates and different pressures, comprising a valve block 1, a left O-ring 2, a left liquid inlet K-type connector 3, a left valve seat 4, a liquid outlet K-type connector 5, an upper O-ring 6, a right valve seat 7, a right O-ring 8, a right liquid inlet K-type connector 9, a right retaining O-ring 10, a right valve seat retaining wire 11, a reversing steel ball 12, a left retaining O-ring 13, and a left valve seat retaining wire 14; characterized in that: the left valve seat 4 is installed in the central hole of the valve block 1, the left O-ring 2 is installed at the left end of the valve block 1, and the left liquid inlet K-type connector 3 is screwed tightly to the left end of the valve block in a threaded form; the right valve seat 7 is installed in the central hole of the valve block 1, the right O-ring 8 is installed at the right end of the valve block 1, and the right liquid inlet K-type connector 9 is screwed tightly to the right end of the valve block in a threaded form; the upper O-ring 6 is installed on the upper surface of the valve block 1, the liquid outlet K-type connector 5 is screwed tightly, the right retaining O-ring 10 and the left retaining O-ring 13 are installed at the lower end of the valve block 1 and are tightened respectively with the right valve seat retaining wire 11 and the left valve seat retaining wire 14 to form a mine automatic reversing valve for different media, different flow rates and different pressures.

[0006] For the further purpose of facilitating control operations, a right valve seat set screw 11 and a left valve seat set screw 14 are installed on the valve block 1 to fix the right valve seat 7 and the left valve seat 4.

[0007] The present invention has the following advantages compared with the existing commutation devices:

[0008] 1. It has an automatic commutation function: A left valve seat 4, a right valve seat 7 and a commutation steel ball 12 are installed in the valve block 1 to play an automatic commutation role.

[0009] 2. It has a function of supplying two media: A left liquid inlet K-type joint 3 and a right liquid inlet K-type joint 9 are installed on the valve block 1, and two different liquids can be supplied to the valve block simultaneously.

[0010] 3. It has the characteristics of a compact structure: The whole automatic commutation valve has a compact structure, small volume, light weight and is easy to install.

[0011] 4. The structure is simple: A mining automatic commutation valve with different media, different flow rates and different pressures has a compact structure, light weight, complete specifications and models, is easy to install and is easy to promote and apply. Description of the Drawings

[0012] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0013] Figure 1 It is a composition structure diagram of a mining automatic commutation valve with different media, different flow rates and different pressures;

[0014] In the figure:

[0015] Valve block 1, left O-ring 2, left liquid inlet K-type joint 3, left valve seat 4, liquid outlet K-type joint 5, upper O-ring 6, right valve seat 7, right O-ring 8, right liquid inlet K-type joint 9, right set O-ring 10, right valve seat set screw 11, commutation steel ball 12, left set O-ring 13, left valve seat set screw 14. Specific Embodiments

[0016] A mine-used automatic reversing valve with different media, different flow rates and different pressures, comprising a valve block 1, a left O-ring 2, a left liquid inlet K-type joint 3, a left valve seat 4, a liquid outlet K-type joint 5, an upper O-ring 6, a right valve seat 7, a right O-ring 8, a right liquid inlet K-type joint 9, a right tightening O-ring 10, a right valve seat tightening wire 11, a reversing steel ball 12, a left tightening O-ring 13, and a left valve seat tightening wire 14; characterized in that: the left valve seat 4 is installed in the central hole of the valve block 1, the left O-ring 2 is installed at the left end of the valve block 1, and the left liquid inlet K-type joint 3 is screwed tightly to the left end of the valve block in a threaded manner; the right valve seat 7 is installed in the central hole of the valve block 1, the right O-ring 8 is installed at the right end of the valve block 1, and the right liquid inlet K-type joint 9 is screwed tightly to the right end of the valve block in a threaded manner; the upper O-ring 6 is installed on the upper surface of the valve block 1, the liquid outlet K-type joint 5 is screwed tightly, the right tightening O-ring 10 and the left tightening O-ring 13 are installed at the lower end of the valve block 1 and are tightened respectively with the right valve seat tightening wire 11 and the left valve seat tightening wire 14, thus forming a mine-used automatic reversing valve with different media, different flow rates and different pressures.

[0017] During operation, low-pressure and large-flow clear water flows into the left valve seat 4 from the left liquid inlet K-type joint 3. The water pushes the reversing steel ball 12 towards the right valve seat 7, and the water flows out from the liquid outlet K-type joint 5 to quickly supply water to the underground hydraulic support. The hydraulic support quickly rises. When the hydraulic support reaches the top, the supporting force of the hydraulic support increases. At this time, higher-pressure liquid is required to supply liquid to it; high-pressure and small-flow emulsion liquid flows into the right valve seat 7 from the right liquid inlet K-type joint 9. The pressure of the right emulsion liquid is higher than the pressure of the left clear water. The emulsion liquid pushes the reversing steel ball 12 towards the left valve seat 4, and the emulsion liquid flows out from the liquid outlet K-type joint 5 to supply liquid to the underground hydraulic support, increasing the pressure inside the hydraulic support and the supporting force of the hydraulic support on the roof, playing the role of a mine-used automatic reversing valve with different media, different flow rates and different pressures.

[0018] When stopping work, stop supplying liquid to the left liquid inlet K-type joint 3 and the right liquid inlet K-type joint 9, clean the entire device with clear water, and place it in a ventilated and dry place.

[0019] Practice has proved that for a mine-used automatic reversing valve with different media, different flow rates and different pressures manufactured according to the above implementation plan, the left liquid inlet K-type joint 3 can supply low-pressure clear water of 4 MPa, 8 MPa, and 12 MPa for liquid injection during the initial rising of the hydraulic support; the right liquid inlet K-type joint 9 can supply high-pressure emulsion liquid of 20 MPa, 31.5 MPa, and 35 MPa for liquid injection during the high-pressure stage of the hydraulic support.

Claims

1. A mine automatic reversing valve with different media, different flow rates and different pressures, comprising a valve block (1), a left O-ring (2), a left liquid inlet K-type joint (3), a left valve seat (4), a liquid outlet K-type joint (5), an upper O-ring (6), a right valve seat (7), a right O-ring (8), a right liquid inlet K-type joint (9), a right locking O-ring (10), a right valve seat locking wire (11), a reversing steel ball (12), a left locking O-ring (13), and a left valve seat locking wire (14); characterized in that: The left valve seat (4) is installed in the central hole of the valve block (1). The left O-ring (2) is installed at the left end of the valve block (1). The left liquid inlet K-type joint (3) is screwed tightly onto the left end of the valve block in a threaded manner; the right valve seat (7) is installed in the central hole of the valve block (1). The right O-ring (8) is installed at the right end of the valve block (1). The right liquid inlet K-type joint (9) is screwed tightly onto the right end of the valve block in a threaded manner; the upper O-ring (6) is installed on the upper surface of the valve block (1). The liquid outlet K-type joint (5) is screwed tightly. The right fixing O-ring (10) and the left fixing O-ring (13) are installed at the lower end of the valve block (1) and are tightened respectively with the right valve seat fixing wire (11) and the left valve seat fixing wire (14), forming a mine-used automatic reversing valve for different media, different flow rates, and different pressures.

2. The automatic reversing valve for mines with different media, different flow rates and different pressures according to claim 1, wherein the low pressure Large-flow clean water flows into the left valve seat (4) from the left liquid inlet K-type joint (3). The water pushes the reversing steel ball (12) towards the right valve seat (7), and the water flows out from the liquid outlet K-type joint (5) to supply water to the underground hydraulic support; high-pressure small-flow emulsion flows into the right valve seat (7) from the right liquid inlet K-type joint (9). The emulsion pushes the reversing steel ball (12) towards the left valve seat (4), and the emulsion flows out from the liquid outlet K-type joint (5) to supply liquid to the underground hydraulic support, playing the role of a mine-used automatic reversing valve for different media, different flow rates, and different pressures.

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