Automatic batching control device for tri-axial mixing pile

Abstract

The utility model relates to the technical field of building construction equipment, concretely to three -axis mixing pile automatic batching controlling means, including discharge pipe, the discharge pipe is fixed in the top of feed hopper, be provided with the closing plate on the feed hopper, the centre of closing plate fixed mounting has the even material mechanism of intermittent turnover of powder material, be provided with the feed pipe on the closing plate, be provided with the pretreatment mechanism of preventing powder material agglomeration in the feed pipe, this three -axis mixing pile automatic batching controlling means, by the connecting hole of feed pipe one side to accept cement powder material, the bidirectional cutting of the powder material that inputs in the process of passing through the pretreatment mechanism, avoid the discontinuous that the agglomerated powder material enters the device in leading to the bearing data change, thereby guaranteed the batching accuracy of device's feeding, by the motor speed reducer unit installed on the closing plate to drive the rotation of turnover spiral plate, prevent the agglomeration of powder material after single feeding completion easily adhering on the valve plate, guaranteed the feeding stability in the continuous production process.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment technology, specifically to an automatic batching control device for three-axis mixing piles. Background Technology

[0002] Triaxial mixing piles are a foundation treatment technology widely used in soft soil foundation reinforcement, foundation pit support and seepage prevention projects. Its core equipment is a triaxial mixing pile machine, which cuts the soil by rotating three drill rods at the same time and injects a curing agent (usually cement slurry) to form a continuous and uniform pile body or underground continuous wall. During the use of the triaxial mixing pile machine, the mud raw materials need to be proportioned to meet the subsequent curing requirements. To address the issue of mud feed ratio, Chinese Patent Publication No. CN207189983U proposes an intelligent automatic mud batching device. Its structure includes a batching branch pipe, a weighing electrically controlled valve, a batching hopper, a feed pipe, a motor, a pump, a suction pipe, an assembly base, a control box, and a transmission line. The bottom of the batching hopper is bonded to the batching branch pipe via the weighing electrically controlled valve. The weighing electrically controlled valve includes a valve pipe, a bonded inner pipe, a valve plate, a pressure sensor, a control linkage, and a valve controller. The inner sides of both the upper and lower ends of the valve pipe are integrally provided with bonded inner pipes, which are bonded to the batching branch pipe and the batching hopper, respectively. The valve plate is located inside the valve pipe and connected to the valve controller shaft. The pressure sensor is locked to the middle of the valve plate, passes through the valve plate, and is electrically connected to the valve controller. The left end of the valve controller is locked to the valve pipe via a control linkage, and the right end is electrically connected to the control box via a transmission line. The aforementioned utility model uses a pump to draw raw materials into the batching hopper and a weighing solenoid valve for weight control. During the control process, a pressure sensor measures the mass, and then the valve plate is adjusted for precise material discharge. However, the entire feeding structure can only produce continuous mass changes when powder is added. When the powder clumps, abrupt mass changes occur, affecting the feeding accuracy of the weighing solenoid valve. In addition, after a single feeding, the powder tends to clump and adhere to the valve plate, affecting the stability of material supply during continuous production. Therefore, we propose an automatic batching control device for a three-axis mixing pile. Utility Model Content

[0003] To solve the above-mentioned technical problems, this application provides an automatic batching control device for a three-axis mixing pile, including a discharge pipe, which is fixed to the top of the feed hopper. A sealing plate is provided on the feed hopper, and an intermittently mixing powder equalization mechanism is fixedly installed at the center of the sealing plate. A feed pipe is provided on the sealing plate, and a pre-treatment mechanism to prevent powder agglomeration is provided in the feed pipe. A quantitative dispensing proportioning unit is provided between the discharge pipe and the feed hopper.

[0004] In some embodiments, the material distribution mechanism includes a motor reducer unit, the output end of which is fixedly connected to a central column through the sealing plate, and a material turning spiral plate is provided on the central column.

[0005] In some embodiments, the bottom of the turning spiral plate is located at the inner bottom of the proportioning unit, and the bottom pitch of the turning spiral plate is one-third of the top pitch. The number of spiral turns of the turning spiral plate around the central column is three, and the inclination angle between the turning spiral plate and the axis of the central column is 75°.

[0006] In some embodiments, the pretreatment mechanism includes a processing motor, which is fixed on a feed pipe and has a connection hole for connecting a powder pump on one side. The output end of the processing motor is fixedly connected to a first helical gear, and a second helical gear and a third helical gear are respectively meshed on both sides of the first helical gear.

[0007] In some embodiments, the second helical gear and the third helical gear are respectively fixedly sleeved on the outer tube and the inner support, the inner support rotates coaxially on the inner wall of the outer tube, and a cutting impeller is sleeved on the end of the outer tube and the inner support away from the processing motor.

[0008] In some embodiments, the proportioning unit consists of a gravity sensor, a connecting seat, and a valve plate. The connecting seat is sleeved between the discharge pipe and the feed hopper. The gravity sensor at the bottom of the connecting seat presses against the top of the discharge pipe. The connecting seat is provided with a valve plate for discharging material. The valve plate is controlled by a controller that receives signals from the gravity sensor to regulate its opening and closing state.

[0009] This utility model has at least the following beneficial effects: 1. In this utility model, cement powder is received through a connection hole on one side of the feed pipe. As the powder enters the feed hopper through the feed pipe, it passes through a pre-treatment mechanism. In the pre-treatment mechanism, an outer pipe rotates to support an inner column. A second helical gear and a third helical gear, respectively fitted on the outer pipe and the inner column, mesh with the first helical gear on both sides to form a coaxial bidirectional rotation structure. Under the drive of the processing motor, the first helical gear drives the outer pipe and the inner column to rotate in opposite directions simultaneously. This causes the cutting impeller at one end of the outer pipe and the inner column to cut the powder in both directions, preventing lumpy powder from entering the device and causing discontinuities in the load-bearing data, thereby ensuring the accuracy of the feeding ratio of the device.

[0010] 2. In this utility model, a motor reducer unit installed on the sealing plate drives the central column and the material-turning spiral plate. During rotation, the material-turning spiral plate will spirally lift the cement powder accumulated at the bottom of the valve plate to the top for mixing. The bottom pitch of the material-turning spiral plate is small, which can enhance the gripping ability of the accumulated powder, prevent the powder from depositing near the valve plate, and ensure sufficient lifting. At the same time, the top pitch is increased, so that the powder gradually loosens during the ascent, improves the mixing uniformity, and avoids clumping. In addition, the 75° inclination angle design enhances the radial throwing effect while lifting the powder, so that the powder forms a circulating flow within the proportioning unit, improves the mixing uniformity, and prevents the powder from easily clumping and adhering to the valve plate after a single feeding, thus ensuring the stability of material supply during continuous production. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of part of the structure of this utility model; Figure 3 This is an assembly diagram of the pre-processing mechanism in this utility model; Figure 4 This is a schematic diagram of the overall structure of Embodiment 5 of the present utility model; Figure 5 This is a partial structural schematic diagram of Embodiment 5 of the present invention.

[0012] In the diagram: 1-Discharge pipe; 2-Feed hopper; 3-Equalizing mechanism; 4-Sealing plate; 5-Feed pipe; 6-Pre-treatment mechanism; 7-Proportioning unit; 31-Motor reducer unit; 32-Central column; 33-Tilting spiral plate; 61-Processing motor; 62-First helical gear; 63-Second helical gear; 64-Third helical gear; 65-Outer pipe; 66-Inner support column; 67-Cutting impeller; 71-Gravity sensor; 72-Connecting seat; 73-Valve plate; 101-Observation window; 102-Scraper; 103-Friction ring; 104-Rubber column; 105-Drive motor. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Example 1: Please see Figure 1-3This utility model provides a technical solution: an automatic batching control device for a three-axis mixing pile, including a discharge pipe 1, which is fixed to the top of a feeding hopper 2. A sealing plate 4 is provided on the feeding hopper 2, and an intermittently agitating powder equalization mechanism 3 is fixedly installed at the center of the sealing plate 4. A feeding pipe 5 is provided on the sealing plate 4, and a pre-treatment mechanism 6 for preventing powder agglomeration is provided in the feeding pipe 5. A quantitative dispensing proportioning unit 7 is provided between the discharge pipe 1 and the feeding hopper 2. The pre-treatment mechanism 6 is installed in the feeding pipe 5 and can break down... To prevent powder from clumping in the initial crushing stage and ensure its fluidity, the material mixing mechanism 3 intermittently stirs and mixes the powder. Through spiral lifting and scattering actions, it avoids the accumulation of powder in the proportioning unit 7, reducing the risk of caking. The proportioning unit 7, located between the discharge pipe 1 and the feed hopper 2, can quantitatively add cement powder, precisely controlling the powder output to ensure that the mixing ratio of the triaxial mixing pile meets the construction requirements. During the process, the material mixing mechanism 3 automatically stirs and the proportioning unit 7 automatically adjusts the discharge amount, reducing the frequency of manual adjustment and improving construction efficiency.

[0015] Example 2: Please see Figure 1-2 The material distribution mechanism 3 includes a motor reducer unit 31. The output end of the motor reducer unit 31 is fixedly connected to a central column 32 through the sealing plate 4. A turning spiral plate 33 is installed on the central column 32. The bottom of the turning spiral plate 33 is located at the bottom of the inner part of the proportioning unit 7, and the bottom pitch of the turning spiral plate 33 is one-third of the top pitch. The turning spiral plate 33 winds around the central column 32 three times, and the inclination angle between the turning spiral plate 33 and the axis of the central column 32 is 75°. The motor reducer unit 31 installed on the sealing plate 4 drives the central column 32 and the turning spiral plate 33. During the rotation, the turning spiral plate 33 will... The cement powder piled at the bottom of valve plate 73 is spirally lifted to the top for mixing. The spiral plate 33 has a smaller pitch at the bottom, which enhances its ability to grasp the piled powder and prevents the powder from settling near valve plate 73, ensuring full lifting. At the same time, the larger pitch at the top makes the powder gradually loosen during the ascent, improving the mixing uniformity and avoiding clumping. The 75° inclination design enhances the radial throwing effect while lifting the powder, allowing the powder to circulate within the mixing unit 7, improving the mixing uniformity and preventing the powder from easily clumping and adhering to valve plate 73 after a single feeding, thus ensuring the stability of the material supply during continuous production.

[0016] Example 3: Please see Figure 1-3The pretreatment mechanism 6 includes a treatment motor 61, which is fixed to the feed pipe 5. A connection hole for connecting to a powder pump is provided on one side of the feed pipe 5. A first helical gear 62 is fixedly connected to the output end of the treatment motor 61. A second helical gear 63 and a third helical gear 64 are respectively meshed on both sides of the first helical gear 62. The second helical gear 63 and the third helical gear 64 are respectively fixedly sleeved on the outer pipe 65 and the inner support 66. The inner support 66 rotates coaxially on the inner wall of the outer pipe 65. A cutting impeller 67 is sleeved on the end of both the outer pipe 65 and the inner support 66 away from the treatment motor 61. Cement powder is received through the connection hole on one side of the feed pipe 5 and fed through the feed pipe 5. As the material pipe 5 enters the feed hopper 2, it passes through the pre-processing mechanism 6. In the pre-processing mechanism 6, the outer pipe 65 rotates to support the inner support column 66. The second helical gear 63 and the third helical gear 64, which are respectively sleeved on the outer pipe 65 and the inner support column 66, mesh with the two sides of the first helical gear 62 to form a coaxial bidirectional rotation structure. Under the driving action of the processing motor 61, the first helical gear 62 drives the outer pipe 65 and the inner support column 66 to rotate in opposite directions at the same time. This causes the cutting impeller 67 at one end of the outer pipe 65 and the inner support column 66 to cut the input powder in both directions, preventing the lumpy powder from entering the device and causing discontinuity in the load data, thereby ensuring the feeding ratio accuracy of the device.

[0017] Example 4: Please see Figure 1-2 The proportioning unit 7 consists of a gravity sensor 71, a connecting seat 72, and a valve plate 73. The connecting seat 72 is sleeved between the discharge pipe 1 and the feed hopper 2. The gravity sensor 71, located at the bottom of the connecting seat 72, presses against the top of the discharge pipe 1. The connecting seat 72 contains a valve plate 73 for discharging material. The valve plate 73 is controlled by a controller that receives signals from the gravity sensor 71 to regulate its opening and closing state. The gravity sensor 71 is installed on the force transmission path between the connecting seat 72 and the discharge pipe 1 to detect the net weight of the material passing through in real time. In conjunction with the controller, the valve plate 73 is dynamically adjusted to open and close based on the real-time weight data, thus realizing the intelligent control process of PID.

[0018] Example 5: Please see Figure 4-5This utility model provides a technical solution: an automatic batching control device for a three-axis mixing pile, including a discharge pipe 1, which is fixed to the top of a feeding hopper 2. A sealing plate 4 is provided on the feeding hopper 2, and an intermittently mixing powder equalization mechanism 3 is fixedly installed at the center of the sealing plate 4. A feeding pipe 5 is provided on the sealing plate 4, and a pre-treatment mechanism 6 for preventing powder agglomeration is provided in the feeding pipe 5. A quantitative dispensing proportioning unit 7 is provided between the discharge pipe 1 and the feeding hopper 2. An observation window 10 is added based on the above embodiment. 1. A scraper 102, a friction ring 103, a rubber column 104, and a drive motor 105 are included. An observation window 101 is installed on the feed hopper 2. The scraper 102 is slidably connected to the inner wall of the observation window 101. The scraper 102 is evenly fixed to the bottom of the friction ring 103, and the friction ring 103 is rotatably connected to the top of the inner wall of the feed hopper 2. The rubber column 104 is rolled on the inner wall of the friction ring 103. The elastic design of the rubber column 104 can absorb the impact force when the drive motor 105 starts, protecting the friction ring 102. The structure of the scraper 102 extends its service life. The high coefficient of friction between the rubber and the friction ring 103 ensures effective power transmission, preventing slippage or jamming due to powder resistance. The rubber column 104 is fixedly sleeved on the output end of the drive motor 105, which is fixed to the top side of the sealing plate 4. The observation window 101 allows for easy external observation of the powder's condition, enabling direct monitoring. Operators can observe the powder's flowability, agglomeration, or stratification without opening the equipment, facilitating timely adjustments to process parameters. The enclosed observation reduces dust pollution and safety risks associated with manual inspection. The scraper 102 is supported on the inner wall of the observation window 101 by the friction ring 103. The rotation of the friction ring 103 cleans the powder adhering to the inner wall of the observation window 101, ensuring clear external observation and automating the cleaning process, reducing manual cleaning frequency. This is particularly suitable for high-viscosity or easily agglomerated powders, while also preventing the waste of raw materials caused by cement powder adhesion.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for automatic control of ingredients for triaxial mixing piles, comprising a discharge pipe (1), characterized in that: The discharge pipe (1) is fixed on the top of the feed hopper (2). A sealing plate (4) is provided on the feed hopper (2). A material equalization mechanism (3) for intermittently turning and mixing powder is fixedly installed at the center of the sealing plate (4). A feed pipe (5) is provided on the sealing plate (4). A pre-treatment mechanism (6) for preventing powder agglomeration is provided in the feed pipe (5). A quantitative feeding proportioning unit (7) is provided between the discharge pipe (1) and the feed hopper (2).

2. The automatic material proportioning control device for three-axis mixing pile according to claim 1, characterized in that: The material distribution mechanism (3) includes a motor reducer unit (31), the output end of which is fixedly connected to a central column (32) through the sealing plate (4), and a turning spiral plate (33) is provided on the central column (32).

3. The automatic material proportioning control device for three-axis mixing pile according to claim 2, characterized in that: The bottom of the turning spiral plate (33) is located at the bottom of the inner part of the proportioning unit (7), and the bottom pitch of the turning spiral plate (33) is one-third of the top pitch. The number of spiral turns of the turning spiral plate (33) around the central column (32) is three, and the inclination angle between the turning spiral plate (33) and the axis of the central column (32) is 75°.

4. The automatic material proportioning control device for triaxial mixing piles according to claim 1, characterized in that: The pretreatment mechanism (6) includes a processing motor (61), which is fixed on the feed pipe (5). A connection hole for connecting the powder pump is provided on one side of the feed pipe (5). A first helical gear (62) is fixedly connected to the output end of the processing motor (61). A second helical gear (63) and a third helical gear (64) are respectively meshed on both sides of the first helical gear (62).

5. The automatic material proportioning control device for three-axis mixing pile according to claim 4, characterized in that: The second helical gear (63) and the third helical gear (64) are fixedly sleeved on the outer tube (65) and the inner support (66), respectively. The inner support (66) rotates coaxially on the inner wall of the outer tube (65). Cutting impellers (67) are sleeved on the ends of the outer tube (65) and the inner support (66) away from the processing motor (61).

6. The automatic material proportioning control device for triaxial mixing piles according to claim 1, characterized in that: The proportioning unit (7) consists of a gravity sensor (71), a connecting seat (72) and a valve plate (73). The connecting seat (72) is sleeved between the discharge pipe (1) and the feed hopper (2). The gravity sensor (71) at the bottom of the connecting seat (72) presses against the top of the discharge pipe (1). The connecting seat (72) is provided with a valve plate (73) for discharging. The valve plate (73) is controlled by a controller that receives the signal from the gravity sensor (71) to regulate its opening and closing state.

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