Pilot type pressure-regulating automatic reversing device of mining hydraulic booster pump

Abstract

The utility model discloses a pilot type pressure regulating automatic reversing device of a mining hydraulic booster pump, which comprises a reversing valve block, a connector, an O-shaped ring, a K-shaped liquid outlet joint, a support spring, a polytetrafluoroethylene pad, a reversing valve core, a static pressure water outlet one-way valve component, a wear-resistant ring, a pilot reversing valve core, a pressure regulating spring, a spring seat, a pressure regulating bolt, a pressure regulating lock nut and a static pressure water inlet joint. The hydraulic booster pump comprises a water inlet pipe, a pressurized water inlet pipe, a hydraulic booster pump, a static pressure water inlet pipe, a single prop and the like. The O-shaped ring and the pressure regulating bolt are respectively mounted on the pressure regulating lock nut, and then the pressure regulating lock nut is mounted on the right side of the reversing valve block and tightly presses the pressure regulating spring; the static pressure water outlet one-way valve assembly is installed on the upper side of the reversing valve block, the static pressure water inlet connector is installed on the lower side of the reversing valve block, and the pressurized water inlet pipe is connected with the hydraulic booster pump through the K-shaped liquid outlet connector. The static pressure water inlet pipe is connected with the single prop through the static pressure water outlet one-way valve assembly to form the pilot type pressure regulating automatic reversing device of the mining hydraulic booster pump.

Description

Technical Field

[0001] The utility model relates to a pilot type pressure regulating automatic reversing device for a hydraulic booster pump used in a mine, in particular to a reversing device which can set a certain pressure value and automatically reverse the fluid according to the needs of a hydraulic system. Background Art

[0002] At present, the reversing valve of fluid is mainly divided into three types: one is manual reversing valve, one is pilot type automatic unloading reversing valve, and one is electromagnetic reversing valve; most of the manual reversing valves are manually applied to the reversing valve core to rotate, or manually push and pull the valve core to change the direction of the valve core through hole to make the fluid reversing, and automatic reversing cannot be achieved; the pilot type automatic unloading reversing valve, this reversing valve is when the hydraulic system reaches a certain pressure, the fluid is reversed and the hydraulic system is completely unloaded, the system pressure after reversing is almost zero, and the fluid cannot continue to work after reversing; the electromagnetic reversing valve is to generate magnetic force by giving the reversing valve a certain voltage and current to push the reversing valve core in the reversing valve to move left and right to change the direction of the fluid. The pressure of this hydraulic system is a fixed value, and the reversing pressure is also a fixed value, which cannot achieve the purpose of reversing the fluid when a certain pressure value is set arbitrarily in a fixed pressure system; however, there is no device that can not only ensure that the system pressure is fixed, but also can be set at any pressure value to make the fluid automatically reversing in the reversing valve to solve such problems. Summary of the invention

[0003] The utility model aims to solve the following problems: "the reversing valves for fluid are mainly divided into three types: one is a manual reversing valve, one is a pilot-operated automatic unloading reversing valve, and the other is an electromagnetic reversing valve; most of the manual reversing valves are manually applied with torque to the reversing valve core to rotate, or the valve core is manually pushed and pulled to change the direction of the valve core through hole to make the fluid reversing, and automatic reversing cannot be achieved; the pilot-operated automatic unloading reversing valve, this reversing valve is when the hydraulic system reaches a certain pressure, the fluid is reversed and the hydraulic system is completely unloaded, the system pressure is almost zero after the reversal, and the fluid cannot continue to work after the reversal; the electromagnetic reversing valve is when a certain voltage and current are given to the reversing valve to generate magnetic force, push the reversing valve core in the reversing valve to move left and right, and change the direction of the fluid, the pressure of this hydraulic system is a fixed value, the reversing pressure is also a fixed value, and the purpose of reversing the fluid when a certain pressure value is arbitrarily set in the fixed pressure system cannot be achieved". A pilot-operated pressure regulating automatic reversing device for a hydraulic booster pump used in a mine is proposed.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A pilot pressure regulating automatic reversing device for a hydraulic booster pump in a mine, comprising a reversing valve block 1, a connector 2, an O-ring 3, a K-type liquid outlet joint 4, an O-ring 5, a support spring 6, an O-ring 7, a polytetrafluoroethylene pad 8, a reversing valve core 9, a polytetrafluoroethylene pad 10, a static pressure water outlet check valve assembly 11, a wear-resistant ring 12, an O-ring 13, a polytetrafluoroethylene pad 14, a pilot reversing valve core 15, an O-ring 16, a pressure regulating spring 17, a spring seat 18, a pressure regulating bolt 19, and a pressure regulating lock The mother 20, the static water inlet joint 21, the boost water inlet pipe 22, the hydraulic booster pump 23, the high pressure water outlet pipe 24, the monomer support 25, the static water inlet pipe 26 parts; it is characterized in that the wear ring 12, the polytetrafluoroethylene pad 10, the O-ring 7, the polytetrafluoroethylene pad 8 are sequentially installed on the directional valve core 9, the support spring 6 is installed on the left side of the reversing valve core 9, and then the reversing valve core 9 is installed in the reversing valve block 1; the O-ring 5 and the O-ring 3 are sequentially installed on the connector 2 The K-type liquid outlet joint 4 is tightened on the left side of the connector 2; the O-ring 13 and the PTFE pad 14 are installed on the pilot reversing valve core 15, and the pressure regulating spring 17 is installed on the right side of the pilot reversing valve core 15, and then the pilot reversing valve core 15 is installed in the reversing valve block 1; the O-ring 16 and the pressure regulating bolt 19 are respectively installed on the pressure regulating lock nut 20, and then the pressure regulating lock nut 20 is installed on the right side of the reversing valve block 1, and the pressure regulating spring 17 is pressed; the static pressure water outlet one-way The valve assembly 11 is installed on the upper side of the reversing valve block 1, and the static water inlet joint 21 is installed on the lower side of the reversing valve block 1; the boosting water inlet pipe 22 is connected to the hydraulic boosting pump 23 through the K-type outlet joint 4, the high-pressure water outlet pipe 24 is connected to the single support 25 through the hydraulic boosting pump 23, and the static water inlet pipe 26 is connected to the single support 25 through the static water outlet check valve assembly 11, forming a pilot-type pressure regulating automatic reversing device for a hydraulic boosting pump in a mine.

[0006] In order to further facilitate the control operation, a pressure regulating spring 17, a pressure regulating lock nut 20 and a pressure regulating bolt 19 are installed on the pilot reversing valve core 15 in the reversing valve block 1 to adjust the reversing pressure of the fluid.

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

[0008] 1. With automatic reversing function: the whole machine is equipped with a pilot-type reversing valve core. When the fluid pressure reaches a certain value, the valve core moves to achieve automatic reversing.

[0009] 2. It has the function of reversing the fluid by setting any pressure value: the pressure regulating bolt 19 sets the elastic force of the pressure regulating spring 17, that is, sets the reaction force of the pilot reversing valve core 15, and thus sets the reversing pressure of the automatic reversing valve.

[0010] 3. Automatic reversing function without power supply: This automatic reversing device adopts the pilot hydraulic reversing method, which does not require any power supply and is safe and reliable to use in the high gas environment in the mine.

[0011] 4. Simple structure: The entire pilot-type pressure regulating automatic reversing device for a hydraulic booster pump used in mines is small in size, light in weight, complete in specifications and models, easy to install, and easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described in detail below based on the drawings and embodiments.

[0013] Figure 1 This is a structural diagram of the pilot-type pressure regulating automatic reversing device of a hydraulic booster pump in a mine;

[0014] In the figure:

[0015] Reversing valve block 1, connector 2, O-ring 3, K-type liquid outlet joint 4, O-ring 5, support spring 6, O-ring 7, PTFE pad 8, reversing valve core 9, PTFE pad 10, static water outlet check valve assembly 11, wear-resistant ring 12, O-ring 13, PTFE pad 14, pilot reversing valve core 15, O-ring 16, pressure-adjusting spring 17, spring seat 18, pressure-adjusting bolt 19, pressure-adjusting lock nut 20, static water inlet joint 21, pressurized water inlet pipe 22, hydraulic booster pump 23, high-pressure water outlet pipe 24, single support 25, static water inlet pipe 26. DETAILED DESCRIPTION

[0016] The utility model embodiment of a pilot type pressure regulating automatic reversing device of a hydraulic booster pump for a mine comprises a reversing valve block 1, a connector 2, an O-ring 3, a K-type liquid outlet joint 4, an O-ring 5, a support spring 6, an O-ring 7, a polytetrafluoroethylene pad 8, a reversing valve core 9, a polytetrafluoroethylene pad 10, a static pressure water outlet check valve assembly 11, a wear-resistant ring 12, an O-ring 13, a polytetrafluoroethylene pad 14, a pilot reversing valve core 15, an O-ring 16, a pressure regulating spring 17, a spring seat 18, a pressure regulating valve core 19, a pressure regulating valve core 20, a pressure regulating valve core 21, a pressure regulating valve core 22, a pressure regulating valve core 23, a pressure regulating valve core 24, a pressure regulating valve core 25, a pressure regulating valve core 26, a pressure regulating valve core 27, a pressure regulating valve core 28, a pressure regulating valve core 29, a pressure regulating valve core 30, a pressure regulating valve core 31, a pressure regulating valve core 32, a pressure regulating valve core 33, a pressure regulating valve core 34, a pressure regulating valve core 35, a pressure regulating valve core 36, a pressure regulating valve core 37, a pressure regulating valve core 38, a pressure regulating valve core 39, a pressure regulating valve core 40, a pressure regulating valve core 41, a pressure regulating valve core 42, a pressure regulating valve core 43, a pressure regulating valve core 44, a pressure regulating valve core 45, a pressure regulating valve core 46, a pressure regulating valve core 47, a pressure regulating valve core 48, a pressure regulating valve core 49, a pressure regulating valve core 50, a pressure regulating valve core 51, a pressure regulating valve core 52, a pressure regulating valve core 53, a pressure regulating valve core 54, a pressure regulating valve core 5 Bolt 19, pressure-adjusting lock nut 20, static pressure water inlet joint 21, boost water inlet pipe 22, hydraulic booster pump 23, high pressure water outlet pipe 24, single support 25, static pressure water inlet pipe 26 parts; its characteristic is that the wear-resistant ring 12, PTFE pad 10, O-ring 7, PTFE pad 8 are installed on the reversing valve core 9 in sequence, the support spring 6 is installed on the left side of the reversing valve core 9, and then the reversing valve core 9 is installed in the reversing valve block 1; the O-ring 5, O-ring 3 are installed in sequence Installed on the connector 2, the K-type liquid outlet joint 4 is tightened on the left side of the connector 2; the O-ring 13 and the PTFE pad 14 are installed on the pilot reversing valve core 15, and the pressure regulating spring 17 is installed on the right side of the pilot reversing valve core 15, and then the pilot reversing valve core 15 is installed in the reversing valve block 1; the O-ring 16 and the pressure regulating bolt 19 are respectively installed on the pressure regulating lock nut 20, and then the pressure regulating lock nut 20 is installed on the right side of the reversing valve block 1, and the pressure regulating spring 17 is pressed; the static pressure water outlet The liquid check valve assembly 11 is installed on the upper side of the reversing valve block 1, and the static pressure water inlet joint 21 is installed on the lower side of the reversing valve block 1; the boost water inlet pipe 22 is connected to the hydraulic booster pump 23 through the K-type outlet joint 4, the high-pressure water outlet pipe 24 is connected to the single support 25 through the hydraulic booster pump 23, and the static pressure water inlet pipe 26 is connected to the single support 25 through the static pressure water outlet check valve assembly 11, forming a pilot-type pressure regulating automatic reversing device for a hydraulic booster pump in a mine.

[0017] During operation, 2MPa of static pressure water in the mine enters the reversing valve block 1, the static pressure water outlet non-return valve assembly 11, and the static pressure water inlet pipe 26 to the single pillar 25 to lift the single pillar 25. When the single pillar 25 reaches the top of the tunnel, the static pressure water continues to supply liquid, and the water pressure in the single pillar 25 increases. When the water pressure in the single pillar 25 rises to 3MPa, the pilot reversing valve core 15 overcomes the elastic force of the pressure regulating spring 17 and moves to the right under the action of the water pressure. At this time, the reversing valve core 9 also overcomes the elastic force of the support spring 6 and moves to the left. The pilot reversing valve core 15 and the reversing valve core 9 are opened, and the 3MPa static pressure water in the reversing valve block 1 is The 3MPa static pressure water enters the K-type liquid outlet joint 4 through the center hole of the reversing valve core 9; the 3MPa static pressure water enters the hydraulic booster pump 23 through the K-type liquid outlet joint 4 and the boosting water inlet pipe 22, the hydraulic booster pump 23 boosts the static pressure water to more than 20MPa, and is injected into the single support 25 through the high-pressure water outlet pipe 24. When the high-pressure water in the high-pressure water outlet pipe 24 flows back to the static pressure water outlet check valve assembly 11 through the static pressure water inlet pipe 26, it cannot flow back into the reversing valve block 1; the pressure regulating bolt 19 is rotated left and right to adjust the elastic force of the pressure regulating spring 17 on the pilot reversing valve core 15, so as to adjust the static pressure water reversing pressure and play a pilot type pressure regulating automatic reversing role.

[0018] When stopping work, rotate the pressure regulating bolt to reduce the pressure of the hydraulic system and stop supplying fluid to the static pressure water inlet joint.

[0019] Practice has proved that the pilot-type pressure regulating automatic reversing device for a hydraulic booster pump used in a mine manufactured according to the above implementation scheme can select a flow rate within the range of 25L / min, 35L / min, and 45L / min; the automatic reversing adjustment pressure can be selected within the range of 1MPa, 2MPa, and 3MPa. A pilot-type pressure regulating automatic reversing device for a hydraulic booster pump used in a mine has complete functions, stable operation, flexible adjustment, and is safe and reliable.

Claims

1. A pilot pressure regulating automatic reversing device for a hydraulic booster pump for a mine, comprising a reversing valve block (1), a connector (2), an O-ring (3), a K-type liquid outlet joint (4), an O-ring (5), a support spring (6), an O-ring (7), a polytetrafluoroethylene pad (8), a reversing valve core (9), a polytetrafluoroethylene pad (10), a static water outlet check valve assembly (11), a wear-resistant ring (12), an O-ring (13), a polytetrafluoroethylene pad (14), a pilot reversing valve core (15), an O-ring (16), a pressure regulating spring (17), a spring seat (18), a pressure regulating bolt (19), a pressure regulating lock nut (20), a static water inlet joint (21), a booster water inlet pipe (22), a hydraulic booster pump (23), a high-pressure water outlet pipe (24), a single support (25), and a static water inlet pipe (26); wherein the components are: The wear-resistant ring (12), the polytetrafluoroethylene pad (10), the O-ring (7), and the polytetrafluoroethylene pad (8) are sequentially mounted on the reversing valve core (9), the support spring (6) is mounted on the left side of the reversing valve core (9), and the reversing valve core (9) is mounted in the reversing valve block (1); the O-ring (5) and the O-ring (3) are sequentially mounted on the connecting body (2), and the K-type liquid outlet joint (4) is tightened on the left side of the connecting body (2); the O-ring (13) and the polytetrafluoroethylene pad (14) are mounted on the pilot reversing valve core (15), the pressure regulating spring (17) is mounted on the right side of the pilot reversing valve core (15), and the pilot reversing valve core (15) is mounted in the reversing valve block (1); the O-ring (16) and the pressure regulating bolt (19) are respectively The pressure regulating lock nut (20) is installed on the right side of the reversing valve block (1) and the pressure regulating spring (17) is compressed; the static water outlet check valve assembly (11) is installed on the upper side of the reversing valve block (1), and the static water inlet joint (21) is installed on the lower side of the reversing valve block (1); the boosting water inlet pipe (22) is connected to the hydraulic boosting pump (23) through the K-type outlet joint (4), the high-pressure water outlet pipe (24) is connected to the single support (25) through the hydraulic boosting pump (23), and the static water inlet pipe (26) is connected to the single support (25) through the static water outlet check valve assembly (11), thereby forming a pilot type pressure regulating automatic reversing device for a hydraulic boosting pump in a mine.

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