Duplex flow adjusting and reversing device of mining water cutting machine

Abstract

A duplex flow adjusting and reversing device of a mining water cutting machine comprises a valve body, a left valve seat, a left valve seat O-shaped ring, a left lock nut, a left lock nut O-shaped ring, a left lock nut polytetrafluoroethylene pad, a left needle-shaped valve element, a left side O-shaped ring, a left hand wheel, a right hand wheel, a right needle-shaped valve element, a right lock nut, a right side O-shaped ring, a right side lock nut O-shaped ring, a right side lock nut polytetrafluoroethylene pad, a liquid inlet K-shaped connector, a right valve seat O-shaped ring and a right valve seat. The low-pressure liquid outlet K-type connector, the high-pressure liquid outlet K-type connector, the one-way valve, the high-pressure rubber pipe, the low-pressure rubber pipe, the hydraulic booster pump and the mining water cutting machine jointly form the duplex flow adjusting and reversing device of the mining water cutting machine.

Description

Technical Field

[0001] The utility model relates to a double flow regulating and reversing device for a mining water cutting machine, in particular to a device which can regulate the outflow of liquid and can also cut off and reverse the outflow of liquid. Background Art

[0002] At present, the reversing devices of mining water cutting machines are mostly manual ball valves. During reversing, firstly, water oozes severely on the reversing valve seat under high pressure, resulting in liquid cross-talk and leakage during the reversing process; secondly, the two liquid outlets cannot be closed at the same time, resulting in an inability to stop the liquid supply to the water cutting machine and stop the water cutting machine from working; thirdly, the liquid outlet pressure and flow cannot be adjusted, causing the water cutting machine to lose its cutting ability under low pressure and low flow conditions and automatically clean the pipeline; however, there is currently no device that can solve this problem by overcoming the severe water oozing on the valve seat, closing the two liquid outlets, and adjusting the hydraulic pressure and force flow during reversing.

[0003] Most of the unloading valves used in underground water jet cutting machines in coal mines are manual spring-type unloading valves. During frequent use, the spring elasticity of such unloading valves is easily reduced, causing leakage of the unloading valve, affecting the normal use of the water jet cutting machine. However, there is currently no automatic unloading device that does not require a spring and can be controlled by liquid pressure to solve this problem. Summary of the Invention

[0004] The utility model is to solve a series of problems that "the reversing device of the mining water cutting machine is mostly a manual ball valve. When reversing, firstly, water sniffing is serious at the reversing valve seat under the high pressure state of the reversing device, resulting in liquid cross-talk and leakage during the reversing process; secondly, the two liquid outlets cannot be closed at the same time, resulting in the inability to stop the liquid supply to the water cutting machine and stop the water cutting machine from working; thirdly, the liquid outlet pressure and flow cannot be adjusted, causing the water cutting machine to lose its cutting ability under low pressure and small flow state and automatically clean the pipeline; however, there is currently no device that can overcome the serious water sniffing at the valve seat, close the two liquid outlets, and adjust the hydraulic pressure and force flow when reversing." A double flow regulating reversing device for the mining water cutting machine is proposed.

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

[0006] A double flow regulating and reversing device for a mining water cutting machine, comprising a valve body 1, a left valve seat 2, a left valve seat O-ring 3, a left lock nut 4, a left lock nut O-ring 5, a left lock nut PTFE pad 6, a left needle valve core 7, a left O-ring 8, a left hand wheel 9, a right hand wheel 10, a right needle valve core 11, a right lock nut 12, a right O-ring 13, a right lock nut O-ring 14, a right lock nut PTFE pad 15, a liquid inlet K-type joint 16, a right valve seat O-ring 17, a right valve seat 18, a low-pressure liquid outlet K-type joint 19, a high-pressure liquid outlet K-type joint 20, a one-way valve 21, a high-pressure hose 22, a low-pressure hose 23, a hydraulic booster pump 24, and a mining water cutting machine 25; characterized in that: the left valve seat O-ring 3 is sleeved on the outside of the left valve seat 2 and placed in the left hole of the valve body 1; the left lock nut O-ring 5 and the left lock nut PTFE pad 6 are installed on the O-ring of the left lock nut 4 In the groove, the left hand wheel 9 is installed on the upper end of the left needle valve core 7, the left needle valve core 7 is installed in the left lock nut 4, the left O-ring 8 is sleeved on the outside of the left lock nut 4, and the left lock nut 4 is tightened to the left side of the valve body 1 in the form of a thread; the right valve seat O-ring 17 is sleeved on the outside of the right valve seat 18 and placed in the right hole of the valve body 1; the right lock nut O-ring 14 and the right lock nut Teflon pad 15 are installed in the O-ring groove of the right lock nut 12, the right hand wheel 10 is installed on the upper end of the right needle valve core 11, the right needle valve core 11 is installed in the right lock nut 12, the right O-ring 13 is sleeved on the outside of the right lock nut 12, and the right lock nut 12 is tightened to the right side of the valve body 1 in the form of a thread; the one-way valve 21 is connected between the high-pressure liquid outlet K-type joint 20 and the mining water cutting machine 25 through a high-pressure hose 22, and the hydraulic booster pump 24 is connected to the mining water cutting machine 25 through a low-pressure hose 23. In order to further facilitate the control operation, a left hand wheel 9 is installed on the upper end of the left needle valve core 7, and a right hand wheel 10 is installed on the right needle valve core 11, which is convenient for adjustment during pressure and flow regulation.

[0007] The utility model has the following advantages over the existing reversing device:

[0008] 1. Function of regulating the outlet pressure and flow rate: A fine-pitch structure is used between the left needle valve core 7 and the left lock nut 4, and between the right needle valve core 11 and the right lock nut 12 installed in the valve body 1. By rotating the left hand wheel 9 or the right hand wheel 10, the outlet pressure and flow rate of the high-pressure outlet K-type connector 20 and the low-pressure outlet K-type connector 19 can be adjusted.

[0009] 2. It has a two-way shut-off function: a left needle valve core 7 and a right needle valve core 11 are installed in the valve body 1. When the left hand wheel 9 or the right hand wheel 10 is rotated, the high-pressure liquid outlet K-type joint 20 and the low-pressure liquid outlet K-type joint 19 can be closed, and the liquid discharge from the two K-type joints can be stopped at the same time.

[0010] 3. It has the characteristic of overcoming the serious water sniffing effect on the valve seat: the valve body 1 is equipped with a hard alloy left valve seat 2 and a right valve seat 18, which are hard and wear-resistant, and overcome the water sniffing effect when the valve core is switched.

[0011] 4. Simple structure: A dual flow regulating and reversing device for mining water cutting machine has compact structure, light weight, complete specifications and models, easy installation, and easy promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 1 and Figure 2 This is a diagram of a dual flow regulating and reversing device for a mining water cutting machine:

[0014] Figure 1 :

[0015] Valve body 1, left valve seat 2, left valve seat O-ring 3, left lock nut 4, left lock nut O-ring 5, left lock nut PTFE gasket 6, left needle valve core 7, left O-ring 8, left hand wheel 9, right hand wheel 10, right needle valve core 11, right lock nut 12, right O-ring 13, right lock nut O-ring 14, right lock nut PTFE gasket 15, liquid inlet K-type connector 16, right valve seat O-ring 17, right valve seat 18.

[0016] Figure 2 :

[0017] Low-pressure liquid outlet K-type connector 19, high-pressure liquid outlet K-type connector 20, one-way valve 21, high-pressure hose 22, low-pressure hose 23, hydraulic booster pump 24, mining water cutting machine 25. DETAILED DESCRIPTION

[0018] A double flow regulating and reversing device for a mining water cutting machine, comprising a valve body 1, a left valve seat 2, a left valve seat O-ring 3, a left lock nut 4, a left lock nut O-ring 5, a left lock nut PTFE pad 6, a left needle valve core 7, a left O-ring 8, a left hand wheel 9, a right hand wheel 10, a right needle valve core 11, a right lock nut 12, a right O-ring 13, a right lock nut O-ring 14, a right lock nut PTFE pad 15, a liquid inlet K-type joint 16, a right valve seat O-ring 17, a right valve seat 18, a low-pressure liquid outlet K-type joint 19, a high-pressure liquid outlet K-type joint 20, a one-way valve 21, a high-pressure hose 22, a low-pressure hose 23, a hydraulic booster pump 24, and a mining water cutting machine 25; characterized in that: the left valve seat O-ring 3 is sleeved on the outside of the left valve seat 2 and placed in the left hole of the valve body 1; the left lock nut O-ring 5 and the left lock nut PTFE pad 6 are installed on the O-ring of the left lock nut 4 In the groove, the left hand wheel 9 is installed on the upper end of the left needle valve core 7, the left needle valve core 7 is installed in the left lock nut 4, the left O-ring 8 is sleeved on the outside of the left lock nut 4, and the left lock nut 4 is tightened to the left side of the valve body 1 in the form of a thread; the right valve seat O-ring 17 is sleeved on the outside of the right valve seat 18 and placed in the right hole of the valve body 1; the right lock nut O-ring 14 and the right lock nut Teflon pad 15 are installed in the O-ring groove of the right lock nut 12, the right hand wheel 10 is installed on the upper end of the right needle valve core 11, the right needle valve core 11 is installed in the right lock nut 12, the right O-ring 13 is sleeved on the outside of the right lock nut 12, and the right lock nut 12 is tightened to the right side of the valve body 1 in the form of a thread; the one-way valve 21 is connected between the high-pressure liquid outlet K-type joint 20 and the mining water cutting machine 25 through a high-pressure hose 22, and the hydraulic booster pump 24 is connected to the mining water cutting machine 25 through a low-pressure hose 23.

[0019] When working, the dual flow regulating and reversing device of the mining water cutting machine is characterized in that the left needle valve core 7, the right needle valve core 11 and the left valve seat 2 and the right valve seat 18 are in a normally closed state. When high-pressure water enters the valve body 1 through the liquid inlet K-type joint 16, the left hand wheel 9 is slowly rotated to the left, and the high-pressure water passes through the left valve seat 2, the high-pressure liquid outlet K-type joint 20, the one-way valve 21, and the high-pressure hose 22 to enter the mining water cutting machine 25 for cutting; when the water inlet pressure of the liquid inlet K-type joint 16 is insufficient, that is, lower than 20MPa, the left hand wheel 9 is rotated to the right to close the high-pressure liquid outlet K-type joint 20 At the same time, slowly rotate the right hand wheel 10 to the left, and the low-pressure water passes through the right valve seat 18, the low-pressure liquid outlet K-type joint 19, and the low-pressure hose 23 into the hydraulic booster pump 24. After the hydraulic booster pump 24 boosts the low-pressure water, it supplies high-pressure liquid to the mining water cutting machine 25 for cutting; the left needle valve core 7 and the left lock nut 4, the right needle valve core 11 and the right lock nut 12 are fine-pitch structures. When the left hand wheel 9 or the right hand wheel 10 is rotated, the liquid flow rate of the high-pressure liquid outlet K-type joint 20 and the low-pressure liquid outlet K-type joint 19 can be adjusted, which plays the role of a double flow regulating and reversing device for the mining water cutting machine.

[0020] When the machine stops working, supply liquid through the liquid inlet K-type connector 16, rotate the left hand wheel 9 and the right hand wheel 10 clockwise to put the valve body 1 in the normally closed state, clean the entire device with clean water, and place it in a ventilated and dry place.

[0021] Practice has proven that the dual-flow regulating and reversing device for mining water jet cutting machines, manufactured according to the above embodiment, can achieve operating pressures of 25 MPa, 35 MPa, and 45 MPa, and flow rates of 60 L / min, 90 L / min, and 120 L / min. This dual-flow regulating and reversing device for mining water jet cutting machines is fully functional, operates smoothly, offers flexible adjustments, and is safe and reliable.

Claims

1. A dual flow regulating and reversing device for a mining water cutting machine, comprising a valve body (1), a left valve seat (2), a left valve seat O-ring (3), a left lock nut (4), a left lock nut O-ring (5), a left lock nut polytetrafluoroethylene gasket (6), a left needle valve core (7), a left O-ring (8), a left hand wheel (9), a right hand wheel (10), a right needle valve core (11), a right lock nut (12), a right O-ring (13), a right lock nut O-ring (14), a right lock nut polytetrafluoroethylene gasket (15), a liquid inlet K-type joint (16), a right valve seat O-ring (17), a right valve seat (18), a low-pressure liquid outlet K-type joint (19), a high-pressure liquid outlet K-type joint (20), a one-way valve (21), a high-pressure rubber hose (22), a low-pressure rubber hose (23), a hydraulic booster pump (24), and a mining water cutting machine (25); characterized in that: The left valve seat O-ring (3) is sleeved on the outside of the left valve seat (2) and placed in the left hole of the valve body (1); the left lock nut O-ring (5) and the left lock nut PTFE pad (6) are installed in the O-ring groove of the left lock nut (4), the left hand wheel (9) is installed on the upper end of the left needle valve core (7), the left needle valve core (7) is installed in the left lock nut (4), the left O-ring (8) is sleeved on the outside of the left lock nut (4), and the left lock nut (4) is tightened to the left side of the valve body (1) in the form of a thread; the right valve seat O-ring (17) is sleeved on the outside of the right valve seat (18) and placed in the right hole of the valve body (1); the right lock nut O-ring ( 14), the right side lock nut PTFE pad (15) is installed in the O-ring groove of the right lock nut (12), the right hand wheel (10) is installed on the upper end of the right needle valve core (11), the right needle valve core (11) is installed in the right lock nut (12), the right side O-ring (13) is sleeved on the outside of the right lock nut (12), and the right lock nut (12) is tightened to the right side of the valve body (1) in the form of a thread; the one-way valve (21) is connected between the high-pressure liquid outlet K-type joint (20) and the mining water cutting machine (25) through a high-pressure hose (22), and the hydraulic booster pump (24) is connected to the mining water cutting machine (25) through a low-pressure hose (23).

2. A dual flow regulating and reversing device for a mining water cutting machine according to claim 1, characterized in that The left needle valve core (7), the right needle valve core (11) and the left valve seat (2) and the right valve seat (18) are in a normally closed state. When high-pressure water enters the valve body (1) through the liquid inlet K-type joint (16), the left hand wheel (9) is slowly rotated to the left, and the high-pressure water passes through the left valve seat (2), the high-pressure liquid outlet K-type joint (20), the one-way valve (21), and the high-pressure hose (22) and enters the mining water cutting machine (25) for cutting; when the water inlet pressure of the liquid inlet K-type joint (16) is insufficient, that is, lower than 20MPa, the left hand wheel (9) is rotated to the right to close the high-pressure liquid outlet K-type joint (20), and at the same time, the right hand wheel (1) is slowly rotated to the left. 0), low-pressure water passes through the right valve seat (18), the low-pressure liquid outlet K-type joint (19), and the low-pressure rubber hose (23) into the hydraulic booster pump (24). After the hydraulic booster pump (24) boosts the low-pressure water, it supplies high-pressure liquid to the mining water cutting machine (25) for cutting. A fine pitch structure is formed between the left needle valve core (7) and the left lock nut (4), and between the right needle valve core (11) and the right lock nut (12). When the left hand wheel (9) or the right hand wheel (10) is rotated, the liquid flow of the high-pressure liquid outlet K-type joint (20) and the low-pressure liquid outlet K-type joint (19) can be adjusted, thereby playing the role of a double flow regulating and reversing device for the mining water cutting machine.

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