Automatic flow switching and shunting device for filling pipeline

Abstract

The utility model provides an automatic flow switching and distributing device for a filling pipeline, and belongs to the technical field of mine filling. The device comprises a concentration meter, an intermediate relay, a three-way valve and an actuator, the concentration meter is installed on a filling pipeline below the earth surface filling station, the intermediate relay is connected with the concentration meter and the actuator through electric signals, and the actuator is installed on the three-way valve at the tail end of the filling pipeline below the earth surface filling station. And the other two outlets of the three-way valve are respectively connected to a sedimentation tank and a filling stope through filling pipelines. The concentration meter can distinguish low-concentration filling slurry and high-concentration filling slurry such as pipe moistening and washing water. According to the utility model, the automatic shunting of the pipe moistening and washing water, the low-concentration filling slurry and the high-concentration filling slurry can be realized, the filling concentration of a stope is ensured to meet the paste filling standard, the manual intervention is reduced through automatic control, and the filling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine filling technical field, especially point to a flow automatic switching shunt device for filling pipeline. BACKGROUND

[0002] With the continuous expansion of deposit exploration and mining scale, tailings pond and goaf become two major hidden dangers in the current metal mine safety production, often causing goaf mining disaster, tailings pond collapse and other severe safety and environmental problems, and filling mining method can solve these problems from the source.

[0003] Paste filling technology has been widely recognized and applied in mines at home and abroad due to its advantages of environmental protection, energy saving, emission reduction, safety and high efficiency, and is known as the new green mining technology in the 21st century. In the long-term filling practice, many mine managers gradually realize that the strength of the filling body and the slurry concentration are positively correlated within a certain range, that is, the higher the filling concentration, the more conducive to the growth of the filling body strength. In the actual filling process, clean water needs to be used to lubricate the pipe before filling starts, that is, lubricating water is generated. After filling is completed, clean water needs to be used to flush the filling pipeline, that is, washing water is generated. The discharge of lubricating (washing) water will lead to the decrease of the filling slurry concentration in the stope, and the filling body strength does not meet the standard. Therefore, in order to avoid the situation that the lubricating (washing) water enters the filling stope during underground filling, an automatic shunt device capable of realizing automatic shunting of lubricating (washing) water, low-concentration filling slurry and high-concentration filling slurry is provided, so as to ensure that the filling concentration in the stope meets the paste filling standard. SUMMARY

[0004] The utility model discloses to solve the problem that the lubricating (washing) water enters the filling stope during underground filling, and provides a flow automatic switching shunt device for filling pipeline, so as to ensure that the filling concentration in the stope meets the paste filling standard.

[0005] The device comprises a concentration meter, an intermediate relay, a three-way valve and an actuator,

[0006] The concentration meter is installed on the filling pipeline connected below the ground filling station,

[0007] The intermediate relay is connected with the concentration meter and the actuator through electric signal,

[0008] The actuator is installed on the three-way valve at the end of the filling pipeline connected below the ground filling station,

[0009] The other two outlets of the three-way valve are connected to the sedimentation tank and the filling stope through the filling pipeline respectively.

[0010] The intermediate relay is installed in the safety cabinet.

[0011] The concentration meter is an on-off quantity concentration meter, which can accurately distinguish the pipe lubricating water, pipe washing water, low concentration filling slurry and high concentration filling slurry through on-off quantity signals, and the concentration of the pipe lubricating water and the pipe washing water and the low concentration filling slurry is less than 60%, and no less than 60% is identified as the high concentration filling slurry. In use, the concentration meter senses the concentration of the slurry in the pipeline and converts it into an electric signal, and then the electric signal is transmitted to the relay, the relay has a pre-installed command program, so that the slurry concentration is distinguished, and the on-off signal is transmitted to the three-way valve, and the slurry direction is controlled through the on-off of the three-way valve.

[0012] The distance between the concentration meter and the three-way valve is 0.5-1 m.

[0013] The three-way valve is made of brass and adopts a ball valve structure.

[0014] The three-way valve is an L-shaped ball valve.

[0015] The actuator is a manual-automatic device, which is connected with the three-way valve through a universal connecting assembly. While automatic control can be realized, when automatic control fails or manual intervention is needed, manual operation can be used to ensure correct switching of the filling pipeline.

[0016] The intermediate relay plays the roles of amplification, isolation and protection in the control circuit. The on-off quantity signal of the concentration meter is amplified, and the signal is isolated to realize accurate regulation and control of the filling pipeline. Meanwhile, the intermediate relay is installed in the safety cabinet to avoid damage of the intermediate relay caused by underground complex environment such as underground water and dust.

[0017] The beneficial effects of the above technical scheme of the utility model are as follows:

[0018] In the above scheme, the pipe (pipe) lubricating water and low concentration filling slurry and high concentration filling slurry can be automatically separated, so that the filling concentration of the stope can meet the paste filling standard; the automatic switching system of the filling pipeline reduces the manual switching process of the underground operation personnel, and greatly improves the filling operation efficiency. DRAWINGS

[0019] Figure 1 It is a structural schematic view of the flow automatic switching and separating device for the filling pipeline.

[0020] Among them: 1-concentration meter; 2-intermediate relay; 3-safety cabinet; 4-three-way valve; 5-actuator. CONCRETE IMPLEMENTATION

[0021] In order to make the technical problems, technical schemes and advantages to be solved by the utility model more clear, the following will be described in detail in combination with the drawings and specific embodiments.

[0022] The utility model provides a flow automatic switching shunt device for filling pipeline.

[0023] As Figure 1 The device comprises a concentration meter 1, an intermediate relay 2, a three-way valve 4 and an actuator 5,

[0024] The concentration meter 1 is installed on the filling pipeline connected below the ground filling station,

[0025] The intermediate relay 2 connects the concentration meter 1 and the actuator 5 through electric signals,

[0026] The actuator 5 is installed on the three-way valve 4 at the end of the filling pipeline connected below the ground filling station,

[0027] The other two outlets of the three-way valve 4 are connected to the sedimentation tank and the filling stope through the filling pipeline respectively.

[0028] The intermediate relay 2 is installed in the safety cabinet 3.

[0029] The concentration meter 1 is an on-off concentration meter, which can accurately distinguish high-concentration slurry (concentration >= 60%) and low-concentration slurry (concentration < 60%) through on-off signals, and the low-concentration slurry includes pipe washing and lubricating water; the distance between the concentration meter 1 and the three-way valve 4 is kept at 0.5-1m to ensure that the three-way valve 4 can complete the switching of the filling pipeline.

[0030] The intermediate relay 2 plays the roles of amplification, isolation and protection in the control circuit, can amplify and isolate the on-off signals of the concentration meter 1, and realizes accurate regulation and control of the filling pipeline; the intermediate relay 2 should be installed in the safety cabinet 3 to avoid damage to the intermediate relay caused by the complex underground environment such as underground water and dust.

[0031] The three-way valve 4 adopts a ball valve structure, and the ball valve type adopts an L type; the three-way valve 4 is made of selected brass, has superior pressure resistance, wear resistance and corrosion resistance, and ensures long-term durability in the underground.

[0032] The actuator 5 is a hand-automatic device, connected with the three-way valve through a universal connecting assembly; the actuator 5 realizes automatic switching of the pipeline of the three-way valve 4 through the on-off signals received by the intermediate relay 2; the actuator 5 is also equipped with a manual knob, which ensures correct switching of the filling pipeline through manual operation when automatic control fails or manual intervention is needed, and facilitates maintenance.

[0033] In specific applications, the device is used as follows:

[0034] In a certain mine in Hubei, in order to ensure that the filling body of paste filling reaches the filling strength standard and avoid the decrease of filling body strength caused by the discharge of pipe washing (pipe washing) water into the stope, the above-mentioned shunt device is used to realize automatic flow shunting.

[0035] When the filling operation is ready to start, the surface filling station puts in pipe-wetting water, which flows through the filling pipeline to the settling pond, and the pipe-wetting operation is completed. Subsequently, the filling station puts in filling slurry, which flows to the concentration meter, and the concentration meter 1 monitors the slurry concentration and transmits a switching signal to the intermediate relay 2, so that the three-way valve 4 is switched to the filling pipeline leading to the stope under the action of the actuator 5. After the filling operation is completed, the filling station puts in pipe-washing water, which flows to the concentration meter 1, and the concentration meter 1 transmits a switching signal again, so that the three-way valve 4 is switched to the filling pipeline leading to the settling pond under the action of the actuator 5.

[0036] The above is the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered within the scope of the present application.

Claims

1. A flow automatic switching and diversion device for filling a pipeline, characterized in that: Including concentration meter, intermediate relay, three-way valve and actuator, The concentration meter is installed on the filling pipe connected to the surface filling station. The intermediate relay connects the concentration meter and the actuator through electrical signals. The actuator is installed on the three-way valve at the end of the filling pipeline connected to the surface filling station. The other two outlets of the three-way valve are connected to the sedimentation tank and the filling stope respectively through the filling pipeline; The concentration meter is a switch-value concentration meter that accurately distinguishes lubricating water, pipe-washing water, low-concentration filling slurry, and high-concentration filling slurry through switch-value signals; the concentration of lubricating water, pipe-washing water, and low-concentration filling slurry is less than 60%, and a concentration of not less than 60% is considered high-concentration filling slurry; During use, the concentration meter senses the slurry concentration in the pipeline and converts it into an electrical signal, which is then transmitted to the relay. The relay has a pre-built command program to distinguish the slurry concentration and then transmit the switch signal to the three-way valve, which controls the direction of the slurry by switching the three-way valve.

2. The automatic flow switching and diverting device for filling a pipeline according to claim 1, characterized in that: The intermediate relay is installed in a safety cabinet.

3. The automatic flow switching and diverting device for filling a pipeline according to claim 1, characterized in that: The distance between the concentration meter and the three-way valve is 0.5 to 1 m.

4. The automatic flow switching and diverting device for filling a pipeline according to claim 1, characterized in that: The three-way valve is made of brass and adopts a ball valve structure.

5. The automatic flow switching and diverting device for filling a pipeline according to claim 4, characterized in that: The three-way valve is an L-shaped ball valve.

6. The automatic flow switching and diverting device for filling a pipeline according to claim 1, characterized in that: The actuator is a manual-automatic device, which is connected to the three-way valve through a universal connection component.

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