Device for preventing pipeline filling slurry from cementation and deposition
By using a swirling pipe and a curved filling pipe structure, combined with the design of an external water pipe and a one-way valve, the problem of cementation and deposition of the filling slurry was solved, achieving water-saving and efficient pipe cleaning, and improving mine production efficiency.
Patent Information
- Application Number
- CN202520416333.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-11
AI Technical Summary
During the mining process, the filling slurry is prone to cementation and deposition during transportation, leading to pipe blockage. Furthermore, existing flushing methods consume a large amount of water, affecting the filling effect and increasing underground drainage costs.
It adopts a vortex pipe and a curved filling pipe structure. The inner wall of the vortex pipe is equipped with a flow channel. The external water pipe is used in conjunction with a one-way valve and a pipeline pump. The vortex flow prevents the cementation and deposition, and the curved filling pipe concentrates the sediment for easy cleaning.
It effectively prevents the cementation and deposition of filling slurry, reduces flushing water consumption, lowers downhole drainage costs, improves filling operation rate, and reduces cleaning frequency and workload.
Smart Images
Figure CN223825051U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a device that can prevent the cementation and deposition of filling slurry in pipelines, belonging to the technical field of mining filling pipeline equipment. Background Technology
[0002] Cemented backfilling is a crucial process in mining operations, requiring the transport of backfill slurry. During transport, the slurry is delivered from the backfilling station to the backfill stope via pipelines. The pipelines must be cleaned promptly to prevent slurry from cementing and clogging. Due to the length of the underground backfilling pipelines, at least 20 cubic meters of water are used for flushing to prevent slurry deposition on the pipe walls and ensure thorough cleaning. This flushing water has several drawbacks: first, it dilutes the slurry concentration, potentially causing segregation and affecting backfill quality; second, it increases underground wastewater volume and drainage costs; and third, it increases the workload of underground drainage and dredging, leading to higher costs for pollution treatment. Without sufficient flushing water, cementing and deposition in the pipelines can easily occur, causing blockages and severely impacting backfilling operations. Therefore, it is essential to improve existing pipelines to prevent slurry deposition and avoid the need for excessive water flushing. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a device for preventing the cementation and deposition of pipeline filling slurry. This device can avoid the natural cementation and deposition of filling slurry during long-distance transportation, and at the same time, it can reduce the amount of flushing water while ensuring that the pipeline is clean.
[0004] The technical solution to the above technical problem is:
[0005] A device for preventing the cementation and deposition of filling slurry in a pipeline includes a vortex pipe, a connecting flange, an external water pipe, and a one-way valve. The vortex pipe is installed in the filling pipeline via the connecting flange. Multiple drainage channels are evenly distributed around the inner wall of the vortex pipe along its length, and are parallel to each other. The drainage channels form a downward and forward-sloping angle with the axial direction of the vortex pipe. The outlet end of the external water pipe is connected above the inlet outer wall of the vortex pipe. The axial direction of the external water pipe is parallel to the inclination direction of the drainage channels in the vortex pipe. The inlet end of the external water pipe is connected to a downhole water pipe, and a one-way valve is installed on the external water pipe.
[0006] The aforementioned device for preventing the cementitious deposition of the filling slurry in the pipeline also includes a curved filling pipe, which is installed between the vortex pipe and the filling pipe via a connecting flange, with the curvature of the curved filling pipe facing downwards.
[0007] The aforementioned device for preventing the cementitious deposition of the filling slurry in the pipeline includes a pipeline pump installed on the pipeline downstream of the one-way valve of the external water pipe.
[0008] The beneficial effects of this utility model are:
[0009] The vortex pipe of this invention has a guide groove on its inner wall that is inclined downwards and forwards along the length of the vortex pipe. The guide groove guides the filling slurry or flushing water flowing in the vortex pipe to rotate forward in a spiral shape. The rotating filling slurry will not produce cementation and sedimentation, and the rotating flushing water will more easily flush away the deposits on the pipe wall. An external water pipe can introduce flushing water into the vortex pipe, a one-way valve can control the inflow of flushing water, and a pipeline pump can pressurize the flushing water. The curved filling pipe can concentrate the sediment at the lower part of the bend, which is convenient for the vortex water to flush away the sediment.
[0010] This utility model has a simple structure and is easy to use. It solves the problem of cementation and deposition of filling slurry in pipelines, effectively prevents pipe blockage accidents, greatly reduces the frequency of opening pipelines for inspection and cleaning, improves the filling operation rate, reduces the water consumption for flushing pipelines, reduces the workload of dredging water tanks, and reduces the cost of underground drainage, thus achieving energy conservation and consumption reduction. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the cross-section of a vortex pipe.
[0013] The following markings are used in the diagram: 1. Filling pipe; 2. Bent filling pipe; 3. Swirl pipe; 4. Connecting flange; 5. Connecting bolt; 6. Inner hole; 7. Inner hole wall; 8. Drainage channel; 9. External water pipe; 10. Check valve; 11. Pipeline pump. Detailed Implementation
[0014] This utility model consists of a curved filling pipe 2, a swirling pipe 3, a connecting flange 4, connecting bolts 5, an external water pipe 9, a one-way valve 10, and a pipeline pump 11.
[0015] Figure 1 The diagram shows that the filling pipe 1 is connected by a curved filling pipe 2 and a vortex pipe 3. The two ends of the curved filling pipe 2 are connected to the filling pipe 1 and the vortex pipe 3 respectively through connecting flanges 4. The filling slurry flows from the inlet of the filling pipe 1 into the curved filling pipe 2 through the vortex pipe 3, and then flows from the curved filling pipe 2 into the outlet of the filling pipe 1.
[0016] Figure 1 , 2The diagram shows that the inner wall 7 of the vortex pipe 3 has multiple drainage channels 8. These channels 8 are evenly distributed around the inner wall 7 of the vortex pipe 3 along its length, are parallel to each other, and form a downward and forward-sloping angle with the axial direction of the vortex pipe 3. The drainage channels 8 guide the filling slurry or flushing water flowing within the vortex pipe 3 in a spiral motion. The rotating flow of the filling slurry prevents cementation and sedimentation, and the rotating flow of the flushing water more easily washes away deposits on the pipe wall of the filling pipe 1.
[0017] Figure 1 The external water pipe 9 is welded to the upper part of the inlet wall of the vortex pipe 3. The welding angle of the external water pipe 9 is parallel to the inclination direction of the diversion channel 8 of the vortex pipe 3. The inlet end of the external water pipe 9 is connected to the downhole water pipe. A one-way valve 10 is installed on the external water pipe 9. The external water pipe 9 can introduce flushing water into the vortex pipe 3. The one-way valve 10 can control the inflow of flushing water. The one-way valve 10 can guide external water into the vortex pipe 3 to accelerate the rotation of the flushing water inside the vortex pipe 3. When the one-way valve 10 closes, it isolates the filling slurry from the outside to form a closed pipeline.
[0018] Figure 1 The diagram shows that a pipeline pump 11 is installed on the pipe behind the one-way valve 10 of the external water pipe 9. The function of the pipeline pump 11 is to increase the water pressure in the external water pipe 9 and accelerate the rotation of the flushing water in the rotating pipe 3.
[0019] Figure 1 As shown, the curved filling pipe 2 is installed between the vortex pipe 3 and the filling pipe 1 via a connecting flange 4, with the curvature of the curved filling pipe 2 pointing downwards. The curved filling pipe 2 allows sediment to concentrate at the lower part of the bend, facilitating flushing by the swirling water in the vortex pipe 3.
[0020] The working process of this utility model is as follows:
[0021] During normal filling, the one-way valve 10 is closed, and the filling slurry forms a rotating slurry after passing through the swirl pipe 3, reducing slurry deposition in the filling pipe 1 and the curved filling pipe 2. After filling is completed, the one-way valve 10 is opened, and the water in the external water pipe 9 is used to flush the filling pipe 1, the curved filling pipe 2 and the swirl pipe 3. The water in the external water pipe 9 increases the flow rate under the pressure of the pipe pump 11, which can accelerate the rotation and flush the deposits in the filling pipe 1 and the curved filling pipe 2, keeping the bottom side of the curved filling pipe 2 free of deposits.
[0022] An embodiment of this utility model is as follows:
[0023] The inner diameter of filling pipe 1 is 110 mm;
[0024] The inner diameter of the curved filling pipe 2 is 110mm and the length is 6000mm;
[0025] The swirl tube 3 has an outer diameter of 160mm, a length of 3000mm, an inner hole 6 with a diameter of 108mm, an inner hole wall 7 with a thickness of 26mm, a flow channel 8 with a width of 32mm, a depth of 16mm, and an angle of 11° with the central axis.
[0026] The external water pipe 9 has a diameter of 42.4 mm and a length of 300 mm;
[0027] The model of the one-way valve 10 is H14W-16T-DN32;
[0028] The model number of pipeline pump 11 is 32GW12-15-1.1.
Claims
1. A device for preventing the cementation and deposition of pipeline filling slurry, characterized in that: It includes a vortex pipe (3), a connecting flange (4), an external water pipe (9), and a check valve (10). The vortex pipe (3) is installed in the filling pipe (1) through the connecting flange (4). There are multiple drainage grooves (8) on the inner wall (7) of the vortex pipe (3). The multiple drainage grooves (8) are evenly distributed around the inner wall (7) of the vortex pipe (3) along the length direction of the vortex pipe (3). The multiple drainage grooves (8) are parallel and have an angle of inclination towards the vortex pipe (3) with the axial direction of the vortex pipe (3). The outlet end of the external water pipe (9) is connected above the inlet outer wall of the vortex pipe (3). The axial direction of the external water pipe (9) is parallel to the inclination direction of the drainage grooves (8) of the vortex pipe (3). The inlet end of the external water pipe (9) is connected to the downhole water pipe. A check valve (10) is installed on the external water pipe (9).
2. The device for preventing the cementation and deposition of pipeline filling slurry according to claim 1, characterized in that: It also has a curved filling pipe (2), which is installed between the swirl pipe (3) and the filling pipe (1) via a connecting flange (4), with the curvature of the curved filling pipe (2) facing downward.
3. The device for preventing the cementation and deposition of pipeline filling slurry according to claim 1, characterized in that: A pipeline pump (11) is installed on the pipeline behind the one-way valve (10) of the external water pipe (9).