Reversing confluence valve for mine paste filling

Abstract

The utility model discloses a reversing flow collecting valve for mine paste filling. The reversing flow collecting valve comprises a three-way pipe, an A special-shaped three-way pipe, an A cone valve oil cylinder, a B special-shaped three-way pipe and a B cone valve oil cylinder. A port at one end of a main pipe of the three-way pipe is connected with a port at one end of a main pipe of the special-shaped three-way pipe A; the other end of the main pipe of the special-shaped three-way pipe A is connected with a cone valve oil cylinder A; a cone valve A is arranged in an inner cavity of the special-shaped three-way pipe A, and a push rod A of the cone valve A is connected with a piston A in an oil cylinder of the cone valve A; the port at the other end of the main pipe of the three-way pipe is connected with the port at one end of the main pipe of the special-shaped three-way pipe B; the other end of the main pipe of the special-shaped three-way pipe B is connected with a cone valve oil cylinder B; a cone valve B is arranged in an inner cavity of the special-shaped three-way pipe B, and a push rod B of the cone valve B is connected with a piston B in an oil cylinder of the cone valve B; and a branch pipe orifice of the three-way pipe, a branch pipe orifice of the special-shaped three-way pipe A and a branch pipe orifice of the special-shaped three-way pipe B are respectively connected with other pipelines.

Description

Technical Field

[0001] The present application belongs to the technical field of mine paste filling equipment, and specifically relates to a reversing and combining valve for mine paste filling with a simple structure, convenient operation and modular design, which can realize both a reversing function and a combining function. Background Art

[0002] Paste filling is to make tailings, coal gangue, fly ash, industrial slag and other solid wastes around the mine into high-concentration, high-yield stress, non-stratified, non-segregated, and non-dehydrated paste slurry. It is pumped and transported to the underground through pipelines. During the filling process, if the pumping cannot be done normally or part of the pipeline is blocked or burst, the slurry will stand in the pipeline for too long, the slurry will become thicker, the pumping resistance will increase, and it will solidify and cannot be transported after the initial setting time of the slurry is exceeded, causing great economic losses. In order to ensure the long-term safe and effective operation of the system, two sets of key equipment such as filling pumps and pipeline systems are selected during system design. Their role is one backup and one use, ensuring that when a filling pump fails or a pipe blockage occurs in a section of the pipeline system, the paste slurry in the pipeline can be transported out in time without causing major losses due to the solidification of the slurry. How to achieve the switch between two filling pumps and two sets of pipeline systems? In addition to manually replacing the transmission pipeline, the quick method usually uses a three-way reversing valve to achieve automatic switching.

[0003] There are three types of existing three-way reversing valves: a hydraulic plunger-shaped three-way reversing valve, an S-valve-type three-way reversing valve, and a manual or electric ball-shaped three-way reversing valve. However, each has its own advantages and disadvantages.

[0004] 1. Hydraulic plunger three-way reversing valve: Figure 2 and Figure 3 As shown in the figure, the state shown is that port B is connected to port A, and port C is not connected to port A. When the spool of the reversing valve moves downward under the action of the oil cylinder, the spool blocks port B, and makes port C connected to port A, realizing the switching between the inlet and the outlet. The advantages of the above structure are compact structure and convenient and fast switching. The main disadvantage is that the sealing effect between the valve core and the pipe wall is not good. If the valve core does not move for a long time or is not cleaned thoroughly, the slurry that penetrates into the gap between the valve core and the pipe wall will solidify and jam the valve core; at the same time, because the valve core moves in the pipeline, the high-pressure slurry wears the pipeline, causing leakage and internal leakage.

[0005] 2. S-valve type three-way reversing valve: Figure 4 and Figure 5As shown, the principle of the reversing valve comes from the concrete delivery pump, and the S valve of the delivery pump switches left and right to achieve reversal. In the reversing valve shown in the figure, ports A and B are connected to the outlet of the filling pump, and port C is connected to the pipeline system. The state shown in the figure is that ports A and C are connected, and ports C and B are not connected. When the S valve is under the action of the oil cylinder, the valve core swings to the other side to connect ports B and C, and ports C and A are not connected, realizing the switching between the filling pump and the pipeline. The advantage of the above structure is that it can realize automatic switching, which is convenient and fast. The disadvantage is that since one end of the S valve needs to slide, a small amount of high-pressure slurry will leak from the gap between the S valve and the rear wall panel, causing leakage, causing external leakage and affecting the environment.

[0006] 3. Manual three-way reversing valve: Figure 6 and Figure 7 As shown, the reversing valve drives the valve core to rotate 120 degrees by rotating the handle, thereby connecting port A and port C (the direction of the handle arrow in the figure). Port A, port B, and port C in the figure can be connected to the outlet of the filling pump and the pipeline system at will. The reversing valve has a simple structure, is easy to use, and has low cost. With the addition of electric facilities, it can also achieve automatic switching. The disadvantage is that there is a gap between the valve body and the rotating valve core, and the sealing effect is not good. The slurry that penetrates into the gap between the valve body and the rotating valve core will solidify and jam the valve core. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and provides a reversing and converging valve for filling mine paste.

[0008] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0009] The reversing and converging valve for filling mining paste comprises a three-way pipe (1), an A-shaped three-way pipe (2), an A-cone valve oil cylinder (3), a B-shaped three-way pipe (4), and a B-cone valve oil cylinder (5); one end of the main pipe of the three-way pipe (1) is connected to one end of the main pipe of the A-shaped three-way pipe (2); the other end of the main pipe of the A-shaped three-way pipe (2) is connected to the A-cone valve oil cylinder (3); an A-cone valve (6) is provided in the inner cavity of the A-shaped three-way pipe (2); an A-pushing rod (7) of the A-cone valve (6) is connected to an A-piston (8) in the A-cone valve oil cylinder (3). The other end of the main pipe of the three-way pipe (1) is connected to one end of the main pipe of the B special-shaped three-way pipe (4); the other end of the main pipe of the B special-shaped three-way pipe (4) is connected to the B cone valve cylinder (5); the inner cavity of the B special-shaped three-way pipe (4) is provided with a B cone valve (9), and the B push rod (10) of the B cone valve (9) is connected to the B piston (11) in the B cone valve cylinder (5); the branch pipe openings of the three-way pipe (1), the branch pipe openings of the A special-shaped three-way pipe (2), and the branch pipe openings of the B special-shaped three-way pipe (4) are respectively connected to other pipelines.

[0010] Preferably, the connection between the pipelines in the reversing and combining valve for filling mining paste is through flange connection.

[0011] Preferably, both the A-shaped three-way pipe (2) and the B-shaped three-way pipe (4) are provided with a cleaning valve (12).

[0012] The utility model is further described below:

[0013] The working principle of the utility model is as follows: the cone valve oil cylinder is divided into a rod chamber and a rodless chamber by a piston and a push rod. When the pressure oil enters the rod chamber, the pressure oil pushes the piston to move backward, and the push rod drives the cone valve to retreat, and the cone valve opens. On the contrary, the piston rod pushes the cone valve to close. The inlet and outlet direction of the pressure oil is controlled by the electronically controlled (manual) reversing valve in the hydraulic system, thereby realizing the opening and closing functions of the cone valve body.

[0014] Combination Figure 1 , open the cone valve of the left cone valve body and close the cone valve of the right cone valve body, so that port A and port C can be connected. Conversely, open the cone valve of the right cone valve body and close the cone valve of the left cone valve body, so that port B and port C can be connected. This phase realizes the reversing function.

[0015] Open the cone valve of the left cone valve body, and port A is connected with port C; open the cone valve of the right cone valve body, and port B is connected with port C; thus, the filling slurry entering through ports A and B converges and flows out from port C, thereby realizing the confluence function.

[0016] The utility model adopts the structural form of a three-way reversing and combining valve, which avoids the problems of valve core jamming and slurry leakage. In order to realize the function of fast switching with materials, it is prevented that the residual materials in the special-shaped tee are solidified after closing the cone valve body. A cleaning valve is designed on the special-shaped tee, which is cleaned in time after reversing to ensure that the residual materials in the special-shaped tee are removed in time. The cone valve part adopts a hard sealing method, and the valve body and valve seat of the cone valve adopt a cone surface contact to ensure that when the cone valve is closed, under the action of external force, the contact cone surface is pressed tighter and tighter, thereby ensuring the sealing effect; the valve body and valve seat are made of high wear-resistant steel and can be used at both ends to extend the service life of the valve body. In order to ensure that the three-way reversing and combining valve is pressure-resistant and wear-resistant. For the components of the valve group, appropriate materials, wall thicknesses and heat treatment methods are selected during the design to ensure its safe and reliable use.

[0017] The utility model adopts a modular design, using two groups of conical distribution valves, which are connected by flanges through a three-way pipe. The conical distribution valves are easy to disassemble, replace, install and maintain. In the utility model, the control cylinders of the two groups of conical distribution valves are controlled to advance and retreat, so that the two openings of the three-way pipe can be switched, thereby realizing the reversing and merging functions. Another function of the utility model is the merging function. For projects that use two filling pumps, in order to improve the filling efficiency and improve the utilization rate of the equipment, it is sometimes necessary for the two filling pumps to work at the same time. This valve group solves this merging function very well. The use of this valve group can make the two systems one for backup and the other for use, and can also make the two pumps merge and work at the same time, thereby improving the filling efficiency and improving the utilization rate of the equipment.

[0018] In short, the filling slurry is a high-concentration, low-fluidity, easy-to-solidify slurry with high operating environment pressure, and the related control valve design is difficult. In view of the shortcomings of the three three-way reversing valves in the prior art during use and the need for confluence, the reversing and confluence valve for mine paste filling described in the utility model has a simple structure and mature technology. According to the needs of use, the electric control button can be switched to realize the reversing and confluence functions, and the sealing performance is good, without leakage, which fundamentally solves the shortcomings of the three structures in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of a hydraulic plunger-shaped three-way reversing valve;

[0021] Figure 3 It is a cross-sectional view of a hydraulic plunger-shaped three-way reversing valve;

[0022] Figure 4 It is a three-dimensional diagram of an S-valve type three-way reversing valve;

[0023] Figure 5 It is a cross-sectional view of an S-valve type three-way reversing valve;

[0024] Figure 6 It is a top view of the manual three-way reversing valve;

[0025] Figure 7 for Figure 6 AA section view.

[0026] In the figure: 1. tee; 2. A special-shaped tee; 3. A cone valve cylinder; 4. B special-shaped tee; 5. B cone valve cylinder; 6. A cone valve; 7. A push rod; 8. A piston; 9. B cone valve; 10. B push rod; 11. B piston; 12. cleaning valve. DETAILED DESCRIPTION Example

[0027] See also Figure 1 The reversing and converging valve for filling the mining paste comprises a three-way pipe 1, an A-shaped three-way pipe 2, an A-cone valve cylinder 3, a B-shaped three-way pipe 4, and a B-cone valve cylinder 5; one end of the main pipe of the three-way pipe 1 is connected to one end of the main pipe of the A-shaped three-way pipe 2; the other end of the main pipe of the A-shaped three-way pipe 2 is connected to the A-cone valve cylinder 3; the inner cavity of the A-shaped three-way pipe 2 is provided with an A-cone valve 6, and the A-push rod 7 of the A-cone valve 6 is connected to the A-piston 8 in the A-cone valve cylinder 3 The other end of the main pipe of the three-way pipe 1 is connected to one end of the main pipe of the B special-shaped three-way pipe 4; the other end of the main pipe of the B special-shaped three-way pipe 4 is connected to the B cone valve cylinder 5; the inner cavity of the B special-shaped three-way pipe 4 is provided with a B cone valve 9, and the B push rod 10 of the B cone valve 9 is connected to the B piston 11 in the B cone valve cylinder 5; the branch pipe openings of the three-way pipe 1, the branch pipe openings of the A special-shaped three-way pipe 2, and the branch pipe openings of the B special-shaped three-way pipe 4 are respectively connected to other pipelines.

[0028] The connection between the pipes in the reversing and converging valve for filling the mining paste is through flange connection. The A-shaped three-way pipe 2 and the B-shaped three-way pipe 4 are both provided with a cleaning valve 12.

Claims

1. A reversing and converging valve for filling mining paste, characterized in that: The reversing and converging valve for filling mining paste comprises a three-way pipe (1), an A-shaped three-way pipe (2), an A-cone valve oil cylinder (3), a B-shaped three-way pipe (4), and a B-cone valve oil cylinder (5); one end of the main pipe of the three-way pipe (1) is connected to one end of the main pipe of the A-shaped three-way pipe (2); the other end of the main pipe of the A-shaped three-way pipe (2) is connected to the A-cone valve oil cylinder (3); an A-cone valve (6) is provided in the inner cavity of the A-shaped three-way pipe (2); an A-pushing rod (7) of the A-cone valve (6) is connected to an A-piston (8) in the A-cone valve oil cylinder (3). The other end of the main pipe of the three-way pipe (1) is connected to one end of the main pipe of the B special-shaped three-way pipe (4); the other end of the main pipe of the B special-shaped three-way pipe (4) is connected to the B cone valve cylinder (5); the inner cavity of the B special-shaped three-way pipe (4) is provided with a B cone valve (9), and the B push rod (10) of the B cone valve (9) is connected to the B piston (11) in the B cone valve cylinder (5); the branch pipe openings of the three-way pipe (1), the branch pipe openings of the A special-shaped three-way pipe (2), and the branch pipe openings of the B special-shaped three-way pipe (4) are respectively connected to other pipelines.

2. The reversing and combining valve for filling of mining paste according to claim 1, characterized in that: The connection between the pipelines in the reversing and converging valve used for filling the mine paste is through flange connection.

3. The reversing and combining valve for filling of mining paste according to claim 1, characterized in that: The A-shaped three-way pipe (2) and the B-shaped three-way pipe (4) are both provided with a cleaning valve (12).

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