A dual shaft mud mixer and method of use thereof

Abstract

The application discloses a double-shaft mud mixer and a use method thereof. The double-shaft mud mixer comprises a supporting column, a weighter, a box frame, a mixing box, double-shaft mixers, a supporting body, a grid filter, a discharge port and a chute. The bottom of the mixing box is a double-arc surface. The double-shaft mixer comprises two groups of mixers. Each group of the mixers comprises a hydraulic motor and a mixing shaft. The hydraulic motor is connected with a control system of the double-shaft mud mixer. One mixing shaft is aligned with the arc center line of one arc surface. The mixing shaft comprises a shaft rod and a plurality of blades which are spirally distributed on the shaft rod. The application can ensure the accurate proportion of effective components in soil and water, realize automatic proportioning of water and soil, improve the quality of mud, and has the advantages of simple soil feeding process, high efficiency, good stirring effect and fast discharge.

Description

Technical Field

[0001] This invention relates to the field of mud preparation technology in construction, and particularly to a twin-shaft mud mixer and its usage method. Background Technology

[0002] Fluidized solidified soil slurry in construction engineering is made by mixing soil and water in a specific weight ratio and adding a solidifying agent. It is typically prepared using a mixer, but its disadvantages are as follows:

[0003] Firstly, traditional mixers lack filtration, resulting in the soil being fed into the mixer containing impurities or large, hard lumps, which affects the quality of the finished mud and the mixing effect, and can easily cause mixing jams.

[0004] Secondly, the bottom of traditional mixers is flat, which results in poor mixing effect of the mixer on the mud.

[0005] Thirdly, before the soil is put into the mixer, it needs to be weighed externally, which results in low soil feeding efficiency. Moreover, there is a situation where the weighed soil is not fully used and there is leftover material. At this time, it is necessary to weigh the leftover material again, calculate the weight of the soil put into the mixer in reverse, and then supply water into the mixer according to the target weight ratio of water and soil to mix and make slurry.

[0006] Fourthly, traditional mixers discharge material through an outlet pipe after preparing the slurry, which has the disadvantage of low discharge efficiency. Summary of the Invention

[0007] The purpose of this invention is to provide a twin-shaft mud mixer and its usage method to solve the problems of poor mud quality, poor mixing effect, low soil feeding efficiency, and the inconvenience of calculating the weight of soil added to the mixer independently outside the mixer when there is residual soil, as well as the inability to automatically calculate the water supply based on the real-time soil feeding amount due to the difficulty in linking with the mixer's control system.

[0008] To solve the above-mentioned technical problems, the present invention provides a twin-shaft mud mixer, comprising:

[0009] The support columns are multiple;

[0010] Multiple weighing devices are installed one-to-one on a support column and connected to the control system of the twin-shaft mud mixer.

[0011] A frame is mounted on the weighing device;

[0012] A mixing tank is mounted on the frame, and the bottom of the mixing tank has a double-arc surface;

[0013] A dual-shaft mixer includes two sets of mixers arranged in parallel and spaced apart. Each set of mixers includes a hydraulic motor located outside the mixing tank and a mixing shaft connected thereto. The hydraulic motor is connected to the control system of the dual-shaft mud mixer. The mixing shaft is horizontally rotatably connected to the mixing tank. The two mixing shafts are aligned one-to-one with the center lines of the arcs of two arc-shaped surfaces at the bottom of the mixing tank. The mixing shaft includes a shaft and a plurality of blades spirally distributed and connected thereon.

[0014] The support body is mounted on the hydraulic motor;

[0015] A grid filter screen is detachably installed at the top opening of the mixing tank;

[0016] The discharge port is located at the bottom or side of the mixing tank, and the discharge port is strip-shaped;

[0017] The chute is located at the discharge port and is mounted on the box frame.

[0018] Furthermore, the twin-shaft mud mixer provided by the present invention also includes:

[0019] The discharge gate includes a curved-edge rotating body on the mixing tank, which is rotatably mounted at the discharge port between two mixing shafts. The body is a cylinder with both ends retained and the middle section is cut to form two symmetrical rectangular planes. An electric push rod is mounted on the mixing tank. A connecting rod is hinged to the electric push rod. The connecting rod is movably connected to a rotating shaft at the end of the curved-edge rotating body. The electric push rod is connected to the control system of the twin-shaft mud mixer.

[0020] Furthermore, in the biaxial mud mixer provided by the present invention, the curved-edge rotating body is rotatably mounted on the mixing tank via rotating shafts at both ends.

[0021] Furthermore, in the twin-shaft mud mixer provided by the present invention, the support column is a steel column.

[0022] Furthermore, in the twin-shaft mud mixer provided by the present invention, the mixing shaft further includes a coupling, and one of the mixing shafts is connected to a hydraulic motor through the coupling.

[0023] Furthermore, in the twin-shaft mud mixer provided by the present invention, the blades are detachably connected to the shaft via clamps.

[0024] Furthermore, in the twin-shaft mud mixer provided by the present invention, all the blades are arranged on the shaft at the same tilt angle.

[0025] Furthermore, in the twin-shaft mud mixer provided by the present invention, the blades are T-shaped.

[0026] Furthermore, in the biaxial mud mixer provided by the present invention, two blades on the two mixing shafts located on the same plane are provided with an initial phase angle of 45°.

[0027] To address the aforementioned technical problems, this invention also provides a method for using a twin-shaft mud mixer. The method involves filtering impurities and large, hard particles from soil through a grid filter before placing it into a mixing tank. The grid filter and any impurities and hard particles trapped on it are removed. The soil in the mixing tank is automatically weighed using a weighing device, and the weight is fed back to the control system. The control system automatically calculates the water supply based on the target weight ratio of soil to water and the weight of the soil. Water is automatically supplied through the pipes connected to the mixing tank, along with their electric valves and flow meters. Then, the twin-shaft mixer is controlled to perform the mixing operation to form mud. The mud prepared in the mixing tank is discharged through a discharge port and a chute.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The twin-shaft mud mixer and its method of use provided by this invention, by detachably installing a grid filter screen at the top opening of the mixing tank, filters out impurities and hard blocks such as large stones and bricks contained in the soil before the soil is added to the mixing tank. This reduces the amount of impurities added to the mixing tank, improves the quality of the soil added to the mixing tank, and thus improves the accuracy of the weight ratio of effective components and water in the soil. It avoids the problem of inaccurate ratio of effective components and water in soil containing impurities as ineffective components when the soil is mixed with water by weight, thereby improving the quality of the mud formed after the soil and water are mixed.

[0030] The twin-shaft mud mixer and its method of use provided by this invention use a grid filter to trap impurities and large, hard particles in the soil. By removing and inserting the grid filter, these trapped impurities and large, hard particles can be removed, preventing the mixing shafts from jamming due to large, hard particles entering the mixing chamber. When removing the grid filter, the soil in the mixing chamber is automatically weighed using a weighing device, avoiding inaccurate weighing of the soil added due to weighing impurities as well. This overcomes the problem of traditional mixers not being able to weigh the soil added internally, requiring external weighing of the remaining soil to calculate the weight of the soil added to the mixer. No weighing of the soil is required before loading, offering advantages of simple and efficient soil loading procedures.

[0031] The present invention provides a twin-shaft mud mixer and its method of use. The bottom of the mixing tank is a double arc-shaped surface. The two mixing shafts of the twin-shaft mixer are aligned and distributed on the center lines of the two arc-shaped surfaces. Thus, when each mixing shaft rotates and mixes the mud at the bottom of the corresponding arc-shaped surface, the mud circulation effect within the spatial range of the radiation radius of the mixing shaft is improved, which has the advantage of good mixing effect.

[0032] The twin-shaft mud mixer and its method of use provided by the present invention automatically weigh the soil material put into the mixing tank according to the weighing device, and combined with the real-time water supply and the target weight ratio of soil material and water, can automatically calculate the water supply based on the soil supply in real time, and automatically supply water through the pipe connected to the mixing tank and the electric valve and flow meter thereon, so as to realize the real-time automatic ratio of soil material and water.

[0033] The twin-shaft mud mixer and its method of use provided by the present invention can quickly discharge the mud prepared in the mixing tank through the cooperation of the strip discharge port and the chute. Attached Figure Description

[0034] Figures 1 to 3 These are three-dimensional structural diagrams of a twin-shaft mud mixer from different perspectives;

[0035] Figure 4 This is a three-dimensional structural diagram of a twin-shaft mud mixer with a grid filter screen in a removed state from the mixing tank.

[0036] Figure 5 This is a three-dimensional structural diagram of a twin-shaft mud mixer with the discharge port and discharge gate exposed at the bottom of the mixing tank after the chute is removed;

[0037] Figure 6 This is a cross-sectional three-dimensional structural diagram of the unloading gate node;

[0038] Figure 7 This is a schematic diagram of the unloading gate in a closed state;

[0039] Figure 8 This is a schematic diagram of the structure with the unloading gate in the open position;

[0040] Figure 9 This is a diagram showing the arrangement of the dual-shaft stirring shafts in one embodiment;

[0041] As shown in the figure:

[0042] 100. Twin-shaft mud mixer; 101. Support column; 102. Weighing device; 103. Box frame; 104. Mixing box; 105. Twin-shaft mixer; 1051. Hydraulic motor; 1052. Mixing shaft; 1052a. Shaft; 1052b. Blade; 1052c. Clamp; 1053. Coupling; 106. Support body; 107. Discharge port; 108. Slide; 109. Grid filter screen; 110. Discharge gate; 111. Curved-edge tilting body; 112. Electric push rod; 113. Connecting rod; 114. Bearing seat; 115. Lifting lug. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0044] Please refer to Figures 1 to 4 This invention provides a twin-shaft mud mixer 100, comprising a support column 101, a weighing device 102, a frame 103, a mixing tank 104, a twin-shaft mixer 105, a support body 106, a discharge port 107, a chute 108, and a grid filter screen 109, wherein:

[0045] Multiple support columns 101 are used to provide support for the entire twin-shaft mud mixer 100. The figure illustrates four support columns 101. To enable the twin-shaft mud mixer 100 to be reused and quickly deployed at different construction sites, the support columns are steel columns. To improve the stability of the support, the support columns 101 can be square columns.

[0046] Multiple weighing devices 102 are installed one-to-one on a support column 101 and connected to the control system of the twin-shaft mud mixer 100. They are used to weigh the soil material put into the mixing tank 104. The figure shows four weighing devices 102, corresponding to four support columns 101. During weighing, the average value is taken by the control system.

[0047] The frame 103 is mounted on the weighing device 102 and is used to protect the mixing tank 104.

[0048] A mixing tank 104, mounted on the frame 103, serves as a container for inputting raw materials. The bottom of the mixing tank 104 has a double-arc surface, which is a horizontally lying half-figure-eight shape. The mixing tank 104 is a rectangular open-type tank.

[0049] A twin-shaft mixer 105 is used for mixing and pulping. It includes two sets of mixers arranged in parallel and spaced apart. Each set of mixers includes a hydraulic motor 1051 located outside the mixing tank 104 and a mixing shaft 1052 connected to it. The hydraulic motor 1051 is connected to the control system of the twin-shaft mud mixer 100. The mixing shaft 1052 is horizontally rotatably connected to the mixing tank 104. The two mixing shafts 1052 are aligned one-to-one with the center lines of the arcs of two arc-shaped surfaces at the bottom of the mixing tank 104. The mixing shaft 1052 includes a shaft 1052a and a plurality of blades 1052b spirally distributed and connected thereon.

[0050] The support body 106 is supported on the hydraulic motor 1051, and the support body 106 can be a wall, frame, etc.

[0051] The discharge port 107 is located at the bottom or side of the mixing tank 104, and the discharge port 107 is strip-shaped. There can be two discharge ports 107 arranged at a straight interval.

[0052] The slide plate 108 is located at the discharge port 107 and is mounted on the box frame 103.

[0053] A grid filter 109 is detachably installed at the top opening of the mixing tank 104.

[0054] Please refer to this carefully. Figure 4 This invention also provides a method for using a twin-shaft mud mixer 100. Soil is filtered through a grid filter 109 to remove impurities and large, hard particles before being placed into a mixing tank 104. The grid filter 109 and any impurities and hard particles trapped on it are removed. The soil in the mixing tank 104 is automatically weighed by a weighing device 102, and the weight is fed back to the control system. The control system automatically calculates the water supply based on the target weight ratio of soil to water and the weight of the soil. Water is automatically supplied through the pipes connected to the mixing tank 104, the electric valves on them, and the flow meter. Then, the twin-shaft mixer 105 is controlled to perform mixing operations to form mud. The mud prepared in the mixing tank 104 is discharged through the discharge port 107 and the chute 108. After removing the grid filter 109, the impurities and hard lumps trapped on the grid filter 109 can be cleaned and then the grid filter 109 can be reinstalled. Alternatively, the grid filter 109 can be replaced by a sealing cover and installed on the mixing tank 104 to prevent mud from overflowing during mixing.

[0055] Please refer to this carefully. Figure 4The twin-shaft mud mixer 100 and its usage method provided in this embodiment of the invention, by detachably installing a grid filter 109 at the top opening of the mixing tank 104, filters and retains impurities and hard blocks such as large stones and bricks in the soil before the soil is added to the mixing tank 104. This reduces the amount of impurities added to the mixing tank 104, improves the quality of the soil added to the mixing tank 104, and thus improves the accuracy of the weight ratio of effective components and water in the soil. This avoids the problem of inaccurate ratio of effective components and water in the soil when impurities in the soil are used as ineffective components in the weight ratio with water, thereby improving the quality of the mud formed after the soil and water are mixed.

[0056] Please refer to this carefully. Figure 4 The twin-shaft mud mixer 100 and its usage method provided in this embodiment of the invention use a grid filter 109 to trap impurities and large hard particles in the soil. By removing and inserting the grid filter 109, the trapped impurities and large hard particles can be removed, preventing large hard particles from entering the mixing tank 104 and causing the two mixing shafts to jam. When removing the grid filter 109, the soil in the mixing tank 104 can be automatically weighed using a weighing device 102. This avoids the problem of inaccurate weighing of the soil added to the mixing tank 104 due to weighing impurities together. It overcomes the problem of traditional mixers not being able to weigh the soil added internally, requiring external weighing of the remaining soil to calculate the weight of the soil added to the mixer. No weighing of the soil is required before feeding, offering the advantages of a simple and efficient soil feeding process.

[0057] Please refer to this carefully. Figure 3 The biaxial mud mixer 100 and its usage method provided in this embodiment of the invention have a bottom of a mixing tank 104 with a double arc-shaped surface. The two mixing shafts 1052 of the biaxial mixer 105 are aligned and distributed on the center lines of the two arc-shaped surfaces. This improves the mud circulation effect within the radius of the mixing shaft 1052 when each mixing shaft 1052 rotates and mixes the mud at the bottom of its respective arc-shaped surface, resulting in excellent mixing performance. Furthermore, the mixing shaft 1052, through blades 1052b spirally connected to the shaft 1052a, also provides a mud circulation and agitation effect, similarly achieving excellent mixing performance.

[0058] Please refer to this carefully. Figure 1 and Figure 4The twin-shaft mud mixer 100 and its usage method provided in this embodiment of the invention automatically weigh the soil material put into the mixing tank 104 according to the weighing device 102, and combined with the real-time water supply and the target weight ratio of soil material and water, can automatically calculate the water supply based on the soil supply in real time, and automatically supply water through the pipe connected to the mixing tank 104 and the electric valve and flow meter thereon, so as to realize the real-time automatic proportioning of soil material and water.

[0059] Please refer to this carefully. Figure 1 The twin-shaft mud mixer 100 and its usage method provided in this embodiment of the invention can quickly discharge the mud prepared in the mixing tank 104 through the cooperation of the strip discharge port 107 and the chute 108.

[0060] Please refer to this carefully. Figures 5 to 8 To enable automatic opening or closing of the discharge port 107, the twin-shaft mud mixer 100 provided in this embodiment of the invention may further include:

[0061] The discharge gate 110 is used to automatically open or close the discharge port 107. It includes a curved-edge rotating body 111 on the mixing tank 104 located at the discharge port 107 between the two mixing shafts 1052. The body is a cylinder with both ends retained and the middle cut to form two symmetrical rectangular planes. An electric push rod 112 is set on the mixing tank 104. A connecting rod 113 is hinged to the electric push rod 112. The connecting rod 113 is movably connected to a rotating shaft 111a at the end of the curved-edge rotating body 111. The electric push rod 112 is connected to the control system of the twin-shaft mud mixer 100.

[0062] Its working principle is as follows: The control system sends a command to the electric push rod 112 to open the discharge port 107. The electric push rod 112 pushes the connecting rod 113 forward, causing the curved-edge flipping body 111 to rotate, so that the rectangular plane of the curved-edge flipping body 111 is in a vertical state. The discharge channel is formed through the gap between the rectangular plane of the curved-edge flipping body 111 and the discharge port 107 for discharge, realizing the automatic opening of the discharge gate 110. The control system sends a command to the electric push rod 112 to close the discharge port 107. The electric push rod 112 pulls the connecting rod 113 backward, causing the curved-edge flipping body 111 to rotate in the opposite direction, so that the rectangular plane of the curved-edge flipping body 111 is in a horizontal state. The arc-shaped surface of the curved-edge flipping body 111 closes the gap between it and the discharge port 107, realizing the automatic closing of the discharge gate 110.

[0063] Please refer to this carefully. Figures 6 to 8In the embodiment of the present invention, the twin-shaft mud mixer 100, in order to improve the stability of the curved-edge tilting body 111 rotatably mounted on the mixing tank 104, can be rotatably mounted on the mixing tank 104 by mounting bearing seats 114 on the rotating shafts 111a at both ends. When there are two discharge ports 107, there are also two corresponding curved-edge tilting bodies 111, which can improve the structural strength of the curved-edge tilting body 111 and its stability in rotatably mounted on the mixing tank 104.

[0064] Please refer to Figure 2 To facilitate the hoisting of the twin-shaft mud mixer 100, lifting lugs 115 are installed at the four corners of the mixing tank 104. The twin-shaft mud mixer 100 is hoisted as a whole by connecting steel wire ropes through the lifting lugs 115 and using hoisting equipment.

[0065] Please refer to Figure 1 To improve the reliable connection between the hydraulic motor 1051 and the stirring shaft 1052, the twin-shaft mud mixer 100 provided in this embodiment of the invention has the stirring shaft 1052 connected to the hydraulic motor 1051 via a coupling 1053. That is, the mixer includes a coupling 1053.

[0066] Please refer to this carefully. Figure 3 To facilitate the maintenance and replacement of the blades 1052b, the twin-shaft mud mixer 100 provided in this embodiment of the invention has blades 1052b detachably connected to the shaft 1052a via clamps 1052c. During mixing operations, the blades 1052b agitate, cut, and beat the soil or mud lumps formed by the mixture of soil and water. Over long-term use, the mixing performance of the blades 1052b decreases, affecting mixing efficiency and effectiveness. In this case, the clamps 1052c allow for the replacement of the blades 1052b, avoiding the need to replace the entire mixing shaft as in traditional mixers, thus reducing maintenance costs.

[0067] Please refer to Figure 1 , Figures 3 to 4 In order to improve the circulation and mixing effect of the mud, the twin-shaft mud mixer 100 provided in this embodiment of the invention has all the blades 1052b arranged on the shaft 1052a at the same tilt angle.

[0068] Please refer to Figure 1 , Figures 3 to 4 In order to improve the tamping effect on the soil and improve the quality of mud preparation, the twin-shaft mud mixer 100 provided in this embodiment of the invention has T-shaped blades 1052b.

[0069] Please refer to Figure 9To avoid jamming in the dual-shaft mixer, the dual-shaft mud mixer 100 provided in this embodiment of the invention has two blades 1052b on the same plane of the two mixing shafts 1052 with an initial phase angle of 45°. This initial phase angle arrangement ensures that the closest distance between the intersecting blades of the two mixing shafts 1052 is greater than the mesh size of a grid filter. Therefore, when blocks smaller than the mesh size enter the mixing tank 104 and are agitated with the mud, they will not be jammed by the distance between the blades 1052b of the two mixing shafts 1052, thus avoiding jamming.

[0070] This invention is not limited to the specific embodiments described above. Obviously, the embodiments described above are only a part of the embodiments of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of this invention are within the scope of protection of this invention. Those skilled in the art can make other modifications and variations to this invention. Therefore, if these modifications and variations of this invention fall within the scope of the claims of this invention, then this invention also intends to include these modifications and variations.

Claims

1. A twin-shaft mud mixer, characterized in that, include: The support columns are multiple; Multiple weighing devices are installed one-to-one on a support column and connected to the control system of the twin-shaft mud mixer. A frame is mounted on the weighing device; A mixing tank is mounted on the frame, and the bottom of the mixing tank has a double-arc surface; A dual-shaft mixer includes two sets of mixers arranged in parallel and spaced apart. Each set of mixers includes a hydraulic motor located outside the mixing tank and a mixing shaft connected thereto. The hydraulic motor is connected to the control system of the dual-shaft mud mixer. The mixing shaft is horizontally rotatably connected to the mixing tank. The two mixing shafts are aligned one-to-one with the center lines of the arcs of two arc-shaped surfaces at the bottom of the mixing tank. The mixing shaft includes a shaft and a plurality of blades spirally distributed and connected thereon. The support body is mounted on the hydraulic motor; A grid filter screen is detachably installed at the top opening of the mixing tank; The discharge port is located at the bottom or side of the mixing tank, and the discharge port is strip-shaped; The chute is located at the discharge port and is mounted on the box frame.

2. The twin-shaft mud mixer according to claim 1, characterized in that, Also includes: The discharge gate includes a curved-edge rotating body on the mixing tank, which is rotatably mounted at the discharge port between two mixing shafts. The body is a cylinder with both ends retained and the middle section is cut to form two symmetrical rectangular planes. An electric push rod is mounted on the mixing tank. A connecting rod is hinged to the electric push rod. The connecting rod is movably connected to a rotating shaft at the end of the curved-edge rotating body. The electric push rod is connected to the control system of the twin-shaft mud mixer.

3. The twin-shaft mud mixer according to claim 2, characterized in that, The curved-edge flipper is rotatably mounted on the mixing tank via bearing seats mounted on the rotating shafts at both ends.

4. The twin-shaft mud mixer according to claim 1, characterized in that, The supporting column is a steel column.

5. The twin-shaft mud mixer according to claim 1, characterized in that, The stirring shaft also includes a coupling, through which one of the stirring shafts is connected to one of the hydraulic motors.

6. The twin-shaft mud mixer according to claim 1, characterized in that, The blade is detachably connected to the shaft via a clamp.

7. The twin-shaft mud mixer according to claim 1, characterized in that, All the blades are mounted on the shaft at the same tilt angle.

8. The twin-shaft mud mixer according to claim 1, characterized in that, The blades are T-shaped.

9. The twin-shaft mud mixer according to claim 1, characterized in that, The two blades on the two stirring shafts, located on the same plane, are set with an initial phase angle of 45°.

10. A method of using a twin-shaft mud mixer according to any one of claims 1-9, characterized in that, After filtering impurities and large hard particles from the soil through a grid filter, it is fed into the mixing tank. The grid filter and the impurities and hard particles trapped on it are removed. The soil in the mixing tank is automatically weighed by a weighing device and the weight is fed back to the control system. The control system automatically calculates the water supply based on the target weight ratio of soil to water and the weight of the soil. Water is automatically supplied by controlling the pipes connected to the mixing tank and the electric valves and flow meters on them. Then, the twin-shaft mixer is controlled to perform the mixing operation to form mud. The mud prepared in the mixing tank is discharged through the discharge port and chute.

Images