A mortar mixing tank bottom pipe cleaning device
By installing an air distribution ring and a purging pipe in the mortar mixing tank's mortar pipe, and using compressed air to rotate and purge, the problem of clogging in the cement mortar pipe is solved, achieving automated cleaning and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN GROUP NICKEL COBALT CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-26
AI Technical Summary
During the backfilling process in mines, cement mortar pipes are prone to blockage, leading to interruptions in cement delivery, which affects mortar quality and production schedule. Existing manual cleaning methods are inefficient and pose safety risks.
Design a mortar mixing tank lower ash pipe cleaning device, which uses an air distribution ring and a blowing pipe to blow compressed air forward and sweep the inner wall of the lower ash pipe, scraping off the accumulated ash, reducing blockage, and achieving automated cleaning.
It has enabled automated cleaning of the ash discharge pipe, reduced manual labor intensity, improved safety, ensured the normal operation of the mortar mixing tank, reduced ash accumulation, and improved production continuity.
Smart Images
Figure CN224275614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blockage removal technology, specifically to a mortar mixing tank bottom pipe cleaning device for mine backfilling. Background Technology
[0002] A significant technological challenge exists in the critical step of preparing mine backfill mortar—cement transportation. Cement is conveyed to the mortar mixing tank via a micro-powder feeder through a discharge pipe. However, because cement powder readily absorbs moisture from the environment, its viscosity increases, making it highly adsorbed onto the inner wall surface of the discharge pipe. This continuous accumulation of adsorption often leads to wall adhesion or bridging, or material bridging, on the pipe wall. Once material bridging occurs, it quickly blocks the discharge pipe, causing an interruption in cement transportation.
[0003] This blockage directly threatens the continuity of backfilling operations. As the core component of mortar, cement supply disruptions can lead to imbalances in the mortar mixing tank, fluctuations in mortar quality, and even force the backfilling station to suspend operations, severely impacting the backfilling progress in underground mining areas and the overall production rhythm of the mine.
[0004] Currently, the main method for dealing with ash discharge pipe blockage is manual cleaning while the mixing tank is continuously running. Operators need to periodically observe the status of the ash discharge port, and once signs of blockage are detected or at predetermined time intervals, tools (such as long sticks) must be used to poke or knock on the pipe wall to break the bridging structure. This solution has significant drawbacks: frequent and inefficient operation; blockages may recur, especially in humid environments, requiring multiple interventions by dedicated personnel, heavily relying on manual experience and judgment, consuming manpower, and reducing the system's automation level. Significant safety risks: performing close-range manual unblocking operations while the equipment is running (the mixing tank is usually continuously rotating) often involves a confined operating space. Personnel face multiple mechanical injuries and occupational health risks, including being caught in rotating parts (hand pinching, being caught in the mixing blades), tool slippage or being injured by splashing material, slipping and falling, and exposure to dust, making the safety situation serious. Utility Model Content
[0005] To address the problems existing in the above-mentioned background technology, this utility model discloses a mortar mixing tank lower mortar pipe cleaning device to achieve automated unblocking.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A mortar mixing tank bottom pipe cleaning device includes a bottom pipe, an air distribution ring is provided on the outside of the bottom pipe, and multiple blow pipes are evenly arranged on the inside of the air distribution ring. One end of the blow pipe is connected to the air distribution ring, and the other end extends into the bottom pipe and is inclined towards the discharge end. An air supply main pipe is connected to the outside of the air distribution ring, and a solenoid valve is also installed on the air supply main pipe.
[0008] Furthermore, the number of purge pipes is 6 to 8, and they are arranged in a counterclockwise or clockwise direction along the lower ash pipe.
[0009] Furthermore, the angle between the axis of the purge pipe and the axis of the lower ash pipe is 35° to 45°.
[0010] Furthermore, the purge pipe is sealed to the side wall of the lower ash pipe.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] Compressed air is injected into the lower ash pipe through the main air supply pipe, air distribution ring, and purging pipe. The compressed air is then rotated forward to purge the ash, increasing the purging pressure. This process scrapes off the cement ash adsorbed inside the lower ash pipe, allowing it to smoothly enter the mortar mixing tank. This reduces ash accumulation in the lower ash pipe and ensures the normal operation of the mortar mixing tank. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 for Figure 1 Distribution diagram of the location of the central purging pipe.
[0015] In the diagram, 1-lower ash pipe, 2-air distribution ring, 3-purge pipe, 4-main air supply pipe, 5-solenoid valve. Detailed Implementation
[0016] The present invention will be further explained below with reference to the accompanying drawings.
[0017] like Figure 1 As shown, a mortar mixing tank bottom pipe cleaning device includes a bottom pipe 1. An air distribution ring 2 is arranged in the middle of the outer side of the bottom pipe 1. Multiple blow pipes 3 are evenly arranged inside the air distribution ring 2. One end of each blow pipe 3 is connected to the air distribution ring 2, and the other end extends into the bottom pipe 1 and is inclined towards the discharge end of the bottom pipe. The inclination angle is α, which is 35~45° between the axis of the blow pipe 3 and the axis of the sound guide 1. An air supply main pipe 4 connected to an external compressed air source is connected to the outer side of the air distribution ring 2. A solenoid valve 5 is installed on the air supply main pipe 4 and is connected to the signal of the field PLC control system.
[0018] like Figure 2 As shown, there are 8 purge pipes 3, which are distributed in a counterclockwise direction along the lower ash pipe 1. During use, the airflow is blown into the lower ash pipe at a certain angle. At the same time, due to the internal space limitation, the airflow moves forward in a spiral shape, scraping off the ash adhering to the inner wall of the lower ash pipe 1, ensuring the normal operation of the slurry mixing tank, and avoiding fluctuations in the slurry composition from affecting the filling operation.
[0019] The working process of this utility model is as follows:
[0020] Once the staff discovers signs of blockage (reduced flow) in the mortar mixing tank's discharge port, they can open the solenoid valve 5 via the on-site PLC control system. Compressed air is then injected into the discharge pipe 1 through the main air supply pipe 4, air distribution ring 2, and purging pipe 3. The compressed air is then used to rotate forward and purge, increasing the gas purging pressure. This scrapes off the cement ash adsorbed inside the discharge pipe 1, allowing it to smoothly enter the mortar mixing tank, reducing ash accumulation in the discharge pipe, and ensuring the normal operation of the mortar mixing tank.
[0021] Compared to manually cleaning the ash outlet during the operation of the mixing tank, using this device can significantly reduce the labor intensity of manual labor, reduce mechanical injuries caused by manual cleaning of the ash outlet during the operation of the mixing tank, improve the inherent safety level on site, and the device has a simple structure, low cost, and is easy to process and promote in the work area.
Claims
1. A mortar mixer under-charging tube cleaning device, characterized in that, Includes a lower ash pipe (1), an air distribution ring (2) is provided on the outside of the lower ash pipe (1), and multiple purge pipes (3) are evenly arranged on the inside of the air distribution ring (2). One end of the purge pipe (3) is connected to the air distribution ring (2), and the other end extends into the lower ash pipe (1) and is inclined towards the discharge end. An air supply main pipe (4) is connected to the outside of the air distribution ring (2), and a solenoid valve (5) is also installed on the air supply main pipe (4).
2. A mortar tub lagger cleaning device as claimed in claim 1, wherein, The number of purge pipes (3) is 6 to 8, and they are arranged in a counterclockwise or clockwise direction along the lower ash pipe (1).
3. A mortar tub lagger cleaning device as claimed in claim 1, wherein, The angle between the axis of the purge pipe (3) and the axis of the lower ash pipe (1) is 35~45°.
4. A mortar tub lagger cleaning device as defined in claim 1 wherein, The purge pipe (3) is sealed to the side wall of the lower ash pipe (1).