Paste filling pressure monitoring and pipeline fault slurry discharging device

Abstract

The utility model discloses a paste filling pressure monitoring and pipeline fault slurry discharging device which comprises a valve body, one end of the valve body is communicated with a main flow pipe, and the other end of the valve body is communicated with a hydraulic cylinder barrel. A slurry discharging pipe is arranged on the side wall of the valve body; a sealing sleeve is annularly arranged on the inner side of the connecting position of the valve body and the hydraulic cylinder barrel, a valve element is arranged in an inner cavity of the valve body, the tail end of the valve element penetrates through the sealing sleeve and extends to the inner cavity of the hydraulic cylinder barrel, a base at the tail end of the valve element is limited by the sealing sleeve, and a sealing assembly is arranged at the front end of the valve element. The open end of the protective sleeve faces and can contain the sealing assembly. The non-open end of the protective sleeve is connected with the sealing sleeve through a spring arranged in the inner cavity of the valve body; a hydraulic cylinder oil inlet and outlet is formed in the hydraulic cylinder barrel, and a high-pressure ball valve and a pipeline are arranged at the hydraulic cylinder oil inlet and outlet; a pipeline is arranged at the tail end of the hydraulic cylinder barrel, an exhaust valve is arranged on the pipeline, the pipeline is communicated with the liquid injection cup, and an inner cavity of the pipeline is connected with a pressure sensor and a pressure gauge; a displacement sensor is further arranged at the tail end of the hydraulic cylinder barrel.

Description

Technical Field

[0001] The utility model belongs to the field of mine paste filling, in particular to a paste filling pipeline pressure monitoring device and a pipeline fault slurry unloading device. Background Art

[0002] As paste filling technology becomes increasingly mature, filling stations are widely used in the mining industry. As one of the core components of the filling pipeline in the filling station, the pressure monitoring device has a significant impact on the filling process.

[0003] At present, in the process of underground paste filling, mine filling equipment is prone to pipe blockage due to long underground pipelines, unreasonable pipeline layout, insufficient pipes, and paste problems. This requires segmented pressure monitoring of underground pipelines to prevent major accidents caused by pipe blockage and reduce significant economic losses. At the same time, a slurry unloading device that can quickly discharge the paste from the blocked area is needed, with a compact structure, easy maintenance, simple operation and reliability.

[0004] Most existing paste filling pipeline pressure monitoring devices and pipeline fault slurry unloading devices separate the monitoring and unloading devices, using two different valve arrangements. Existing pressure monitoring devices measure pipeline pressure directly, coming into direct contact with the paste. After prolonged operation, paste clumps inside the valve body can lead to inaccurate pressure measurements.

[0005] Existing pressure monitoring devices often use a two-way hydraulic lock to lock the oil circuit during operation. Since the two-way hydraulic lock itself has the problem of internal leakage, it leads to frequent inspection and maintenance, which is time-consuming and labor-intensive.

[0006] Most existing pipeline fault slurry unloading devices use a two-stage hydraulic cylinder structure, which is costly and time-consuming to manufacture. The valve cores of existing pipeline fault slurry unloading devices use conventional hydraulic seals or lack protective sleeves. After prolonged opening and closing, the conventional hydraulic seals on the valve cores are easily damaged, resulting in a short service life. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and provides a paste filling pressure monitoring and pipeline fault slurry unloading device.

[0008] In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is:

[0009] The paste filling pressure monitoring and pipeline fault unloading device comprises a valve body (5), one end of the valve body (5) is connected to the main flow pipe (1), and the other end of the valve body (5) is connected to the hydraulic cylinder barrel (9); the main flow pipe (1) is perpendicular to the valve body (5), and the side wall of the valve body (5) is provided with an unloading pipe (20), and the unloading pipe (20) is close to the main flow pipe (1) and perpendicular to the valve body (5); the inner ring of the connection position between the valve body (5) and the hydraulic cylinder barrel (9) is provided with a sealing sleeve (8), the inner cavity of the valve body (5) is provided with a valve core (19), the end of the valve core (19) passes through the sealing sleeve (8) and extends to the inner cavity of the hydraulic cylinder barrel (9), the end base of the valve core (19) is limited by the sealing sleeve (8), the front end of the valve core (19) is provided with a sealing component, and the upper ring of the valve core (19) is provided with a protective sleeve (2) with one end open, and the protective sleeve (2) The open end faces and can accommodate the sealing component; the non-open end of the protective sleeve (2) is connected to the sealing sleeve (8) through a spring (4) arranged in the inner cavity of the valve body (5); when the spring (4) is in a stretched state, the protective sleeve (2) closes the pipe opening of the slurry discharge pipe (20); the hydraulic cylinder barrel (9) is provided with a hydraulic cylinder oil inlet and outlet (17), and the hydraulic cylinder oil inlet and outlet (17) are provided with a high-pressure ball valve and a pipeline (18); the end of the hydraulic cylinder barrel (9) is provided with a pipeline connected to the inner cavity of the hydraulic cylinder barrel (9), the pipeline is provided with an exhaust valve (11), the pipeline is connected to the injection cup (12), and the inner cavity of the pipeline is connected to the pressure sensor (13) and the pressure gauge (14); the end of the hydraulic cylinder barrel (9) is also provided with a displacement sensor (10), and one end of the displacement sensor (10) extends into the central channel of the valve core (19).

[0010] Preferably, a valve core sealing mounting plate (21) is provided at the front end of the valve core (19), and the sealing assembly includes a valve core sealing pressure plate (23) and a valve core fixing screw (24) for fixing the valve core sealing pressure plate (23) to the valve core sealing mounting plate (21), and a valve core seal (22) is provided in an annular manner between the valve core sealing pressure plate (23) and the valve core sealing mounting plate (21).

[0011] More preferably, the valve core seal (22) is a polyurethane piston seal.

[0012] Preferably, the valve body (5) and the hydraulic cylinder barrel (9) are connected via a valve body flange (6) and a hydraulic cylinder flange (7).

[0013] Preferably, a protective sleeve cleaning nozzle (3) is provided on the valve body (5).

[0014] Preferably, a support plate (15) is provided at the end of the hydraulic cylinder barrel (9), and a sensor pressure plate (16) for fixing the displacement sensor (10) is provided on the inner side of the support plate (15).

[0015] Preferably, when the spring (4) is in a compressed state, the protective sleeve (2) opens the mouth of the slurry discharge pipe (20).

[0016] Preferably, the slurry unloading pipe (20) is arranged in parallel with the main flow pipe (1).

[0017] The utility model is further described below:

[0018] The paste filling pressure monitoring and pipeline fault slurry unloading device of the utility model has pressure monitoring function and pipeline fault slurry unloading function.

[0019] Pressure monitoring function:

[0020] When the device is in the off state ( Figure 1 ), ensuring the exhaust valve, high-pressure ball valve, and piping are closed, thereby ensuring the hydraulic cylinder barrel is sealed. During paste filling, the pressure in the main pipe is transmitted to the hydraulic cylinder barrel through the valve core. Since the hydraulic cylinder barrel is connected to the pressure sensor and pressure gauge, the pressure in the main pipe is indirectly measured. The pressure gauge is used for local readings, and the pressure sensor is used for remote readings.

[0021] Pipeline failure slurry unloading function:

[0022] When the pressure monitoring function shows that the pressure in the main pipeline is abnormal, it is necessary to open the valve to discharge the paste in the pipeline. At this time, open the high-pressure ball valve and pipeline, the liquid flows in from the hydraulic cylinder inlet and flows out from the hydraulic cylinder outlet, the valve core moves, and the seal enters the protective sleeve. The protective sleeve remains stationary under the action of the spring, achieving the effect of protecting the seal. Figure 2 When the seal enters the protective sleeve, the valve core and the protective sleeve move together under the action of the hydraulic cylinder until the piston of the hydraulic cylinder contacts the bottom of the hydraulic cylinder, as shown in the figure. Figure 3 At this time, the filling pressure monitoring device is fully open, and the paste in the main pipeline flows out from the slurry discharge pipe, thus avoiding long-distance blockage of the underground pipeline by paste.

[0023] When the fault in the main pipe is eliminated, the filling pressure monitoring device needs to be closed. At this time, the liquid flows in from the hydraulic cylinder outlet and flows out from the hydraulic cylinder inlet. The valve core and the protective sleeve close the valve core under the joint action of the spring and the hydraulic cylinder thrust, and move together to the closed state. Figure 1 shown.

[0024] When the filling pressure monitoring device is fully closed, the gas in the hydraulic cylinder barrel must be exhausted to prevent it from interfering with pressure monitoring. At this point, close the 18-valve high-pressure ball valve and piping at the hydraulic cylinder's inlet and outlet, open the exhaust valve, and exhaust the gas. Simultaneously, add liquid to the filling cup until all the gas in the hydraulic cylinder barrel is exhausted, then close the exhaust valve.

[0025] When the filling pressure monitoring device is completely closed, there is filling paste in the gap between the valve body and the protective sleeve. After a long time, the paste solidifies and prevents the movement between the valve body and the protective sleeve. The protective sleeve needs to be cleaned. At this time, high-pressure liquid is injected from the protective sleeve cleaning nozzle to clean the paste between the gap.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. It can realize real-time monitoring of filling pipeline pressure and discharge the paste in the pipeline in emergency situations to ensure the safety of the filling system.

[0028] 2. When the machine is shut down due to a fault, the paste in the pipeline can be discharged to avoid pipe blockage caused by the slurry staying in the pipeline for too long, thus reducing economic losses.

[0029] 3. The paste filling pressure monitoring device can achieve remote and on-site dual control. The pipeline pressure can be read locally or remotely through the pressure sensor. At the same time, the valve core switch position is determined by the 10 displacement sensor, which is convenient for remote monitoring.

[0030] 4. The utility model adopts indirect monitoring of the pressure in the mainstream pipeline. The pressure sensor is not in direct contact with the paste in the mainstream pipeline, which completely avoids the influence of paste agglomeration on pressure monitoring.

[0031] 5. The hydraulic cylinder and the valve body of the utility model are connected by flanges, and a stop is provided between the two flanges to effectively ensure the coaxiality between the valve core and the valve body.

[0032] 6. During the opening process, the protective sleeve is held in an initial static position by the spring. The valve core seal enters the protective sleeve first, and then, under the action of the hydraulic cylinder, both move to a fully open position. This prevents damage to the seal from high-pressure slurry spray during the initial opening process, effectively extending the seal's service life.

[0033] 7. The utility model adopts a spring to replace the conventional two-stage cylinder structure, which has a simple and reliable structure, reduces production costs, shortens production cycles, and can also reduce the amount of parts used, making disassembly and maintenance more convenient.

[0034] In summary, this utility model provides a novel device that combines a pressure monitoring device and a pipeline fault slurry removal device into one. This device utilizes a special structure to indirectly measure the paste pressure in the pipeline. The pressure monitoring device does not come into direct contact with the paste in the pipeline, thus preventing agglomeration. Furthermore, the pipeline fault slurry removal device utilizes a single-stage hydraulic cylinder, significantly reducing production costs and cycle time. The valve core seal utilizes a more mature piston seal, and a valve core protective sleeve is added to prevent damage to the valve core seal caused by the impact of slurry pressure during opening, thereby extending the service life of the valve core seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of the utility model (closed state);

[0036] Figure 2 This is a schematic diagram of the structure of the utility model (the intermediate state of the sealing member entering the protective sleeve);

[0037] Figure 3 This is a schematic diagram of the structure of the utility model (fully open state).

[0038] In the figure: 1. Main pipe; 2. Protective sleeve; 3. Protective sleeve cleaning nozzle; 4. Spring; 5. Valve body; 6. Valve body flange; 7. Hydraulic cylinder flange; 8. Sealing sleeve; 9. Hydraulic cylinder barrel; 10. Displacement sensor; 11. Exhaust valve; 12. Liquid filling cup; 13. Pressure sensor; 14. Pressure gauge; 15. Support plate; 16. Sensor pressure plate; 17. Hydraulic cylinder inlet and outlet; 18. High-pressure ball valve and pipeline; 19. Valve core; 20. Slurry unloading pipe; 21. Valve core seal mounting plate; 22. Valve core seal; 23. Valve core seal pressure plate; 24. Valve core fixing screw. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0040] See also Figures 1 to 3The paste filling pressure monitoring and pipeline fault unloading device includes a valve body 5, one end of the valve body 5 is connected to the main flow pipe 1, and the other end of the valve body 5 is connected to the hydraulic cylinder barrel 9; the main flow pipe 1 is perpendicular to the valve body 5, and the side wall of the valve body 5 is provided with a unloading pipe 20, and the unloading pipe 20 is close to the main flow pipe 1 and perpendicular to the valve body 5; the inner side ring of the connection position of the valve body 5 and the hydraulic cylinder barrel 9 is provided with a sealing sleeve 8, and the inner cavity of the valve body 5 is provided with a valve core 19, and the end of the valve core 19 extends through the sealing sleeve 8 to the inner cavity of the hydraulic cylinder barrel 9, and the end base of the valve core 19 is limited by the sealing sleeve 8, and a sealing component is provided at the front end of the valve core 19, and a protective sleeve 2 with one end open is provided on the valve core 19, and the open end of the protective sleeve 2 Towards and can accommodate the sealing assembly; the non-open end of the protective sleeve 2 is connected to the sealing sleeve 8 through a spring 4 arranged in the inner cavity of the valve body 5. When the spring 4 is in a stretched state, the protective sleeve 2 closes the mouth of the slurry unloading pipe 20; the hydraulic cylinder barrel 9 is provided with a hydraulic cylinder oil inlet and outlet 17, and the hydraulic cylinder oil inlet and outlet 17 is provided with a high-pressure ball valve and a pipeline 18; the end of the hydraulic cylinder barrel 9 is provided with a pipeline connected to the inner cavity of the hydraulic cylinder barrel 9, and an exhaust valve 11 is provided on the pipeline, and the pipeline is connected to the liquid injection cup 12, and the inner cavity of the pipeline is connected to the pressure sensor 13 and the pressure gauge 14; the end of the hydraulic cylinder barrel 9 is also provided with a displacement sensor 10, and one end of the displacement sensor 10 extends to the central channel of the valve core 19.

[0041] Among them, a valve core sealing mounting plate 21 is provided at the front end of the valve core 19, and the sealing assembly includes a valve core sealing pressure plate 23 and a valve core fixing screw 24 for fixing the valve core sealing pressure plate 23 to the valve core sealing mounting plate 21. A valve core seal 22 is provided between the valve core sealing pressure plate 23 and the valve core sealing mounting plate 21. The valve core seal 22 is a polyurethane piston seal. The valve body 5 and the hydraulic cylinder barrel 9 are connected by a valve body flange 6 and a hydraulic cylinder flange 7. A protective sleeve cleaning nozzle 3 is provided on the valve body 5. A support plate 15 is provided at the end of the hydraulic cylinder barrel 9, and a sensor pressure plate 16 for fixing the displacement sensor 10 is provided on the inner side of the support plate 15. When the spring 4 is in a compressed state, the protective sleeve 2 opens the mouth of the slurry discharge pipe 20. The slurry discharge pipe 20 is arranged parallel to the main pipe 1.

[0042] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation method and application scope. The content of this specification should not be understood as a limitation of the present invention. Equivalent changes or modifications made to the structural features and principles described in the scope of the present utility model patent application are all included in the scope of the present utility model patent application.

Claims

1. A paste filling pressure monitoring and pipeline fault slurry unloading device, characterized in that: The paste filling pressure monitoring and pipeline fault unloading device comprises a valve body (5), one end of the valve body (5) is connected to the main flow pipe (1), and the other end of the valve body (5) is connected to the hydraulic cylinder barrel (9); the main flow pipe (1) is perpendicular to the valve body (5), and the side wall of the valve body (5) is provided with an unloading pipe (20), and the unloading pipe (20) is close to the main flow pipe (1) and perpendicular to the valve body (5); the inner ring of the connection position between the valve body (5) and the hydraulic cylinder barrel (9) is provided with a sealing sleeve (8), the inner cavity of the valve body (5) is provided with a valve core (19), the end of the valve core (19) passes through the sealing sleeve (8) and extends to the inner cavity of the hydraulic cylinder barrel (9), the end base of the valve core (19) is limited by the sealing sleeve (8), the front end of the valve core (19) is provided with a sealing component, and the upper ring of the valve core (19) is provided with a protective sleeve (2) with one end open, and the protective sleeve (2) The open end faces and can accommodate the sealing component; the non-open end of the protective sleeve (2) is connected to the sealing sleeve (8) through a spring (4) arranged in the inner cavity of the valve body (5); when the spring (4) is in a stretched state, the protective sleeve (2) closes the pipe opening of the slurry discharge pipe (20); the hydraulic cylinder barrel (9) is provided with a hydraulic cylinder oil inlet and outlet (17), and the hydraulic cylinder oil inlet and outlet (17) are provided with a high-pressure ball valve and a pipeline (18); the end of the hydraulic cylinder barrel (9) is provided with a pipeline connected to the inner cavity of the hydraulic cylinder barrel (9), the pipeline is provided with an exhaust valve (11), the pipeline is connected to the injection cup (12), and the inner cavity of the pipeline is connected to the pressure sensor (13) and the pressure gauge (14); the end of the hydraulic cylinder barrel (9) is also provided with a displacement sensor (10), and one end of the displacement sensor (10) extends into the central channel of the valve core (19).

2. The paste filling pressure monitoring and pipeline fault slurry removal device according to claim 1, characterized in that: A valve core sealing mounting plate (21) is provided at the front end of the valve core (19), and the sealing assembly comprises a valve core sealing pressure plate (23) and a valve core fixing screw (24) for fixing the valve core sealing pressure plate (23) to the valve core sealing mounting plate (21), and a valve core seal (22) is provided in an annular manner between the valve core sealing pressure plate (23) and the valve core sealing mounting plate (21).

3. The paste filling pressure monitoring and pipeline fault slurry removal device according to claim 2, characterized in that: The valve core seal (22) is a polyurethane piston seal.

4. The paste filling pressure monitoring and pipeline fault slurry removal device according to claim 1, characterized in that: The valve body (5) and the hydraulic cylinder barrel (9) are connected via a valve body flange (6) and a hydraulic cylinder flange (7).

5. The paste filling pressure monitoring and pipeline fault slurry removal device according to claim 1, characterized in that: A protective sleeve cleaning nozzle (3) is provided on the valve body (5).

6. The paste filling pressure monitoring and pipeline fault slurry removal device according to claim 1, characterized in that: A support plate (15) is provided at the end of the hydraulic cylinder barrel (9), and a sensor pressing plate (16) for fixing the displacement sensor (10) is provided on the inner side of the support plate (15).

7. The paste filling pressure monitoring and pipeline fault slurry removal device according to claim 1, characterized in that: When the spring (4) is in a compressed state, the protective sleeve (2) opens the mouth of the slurry discharge pipe (20).

8. The paste filling pressure monitoring and pipeline fault slurry removal device according to claim 1, characterized in that: The slurry unloading pipe (20) is arranged in parallel with the main flow pipe (1).

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