A mobile sand mixer

Abstract

The present invention discloses a mobile sand mixer, which relates to the field of casting technology. A mixing bin, a first auger, a support platform and a driving platform are sequentially arranged from top to bottom. A discharge port is arranged at the bottom of the mixing bin, and the discharge port is connected to one side of the first auger. The support platform includes a support section and a power section. A fixed groove is arranged at one end of the driving platform facing the mixing bin, and the power section is located in the fixed groove. Several protruding structures are arranged on the outer wall of the power section. A first motor is arranged at the bottom of the fixed groove, and a first gear is installed at the power end of the first motor, and the first gear is meshed and connected with the protruding structure. A plurality of supporting legs are arranged between the top of the support section and the mixing bin, and a roller is installed at the bottom of the driving platform. Thus, the first auger and the mixing bin can be rotated 360 degrees by driving the support platform to rotate by the first motor, thereby solving the problem that the existing mobile sand mixer is difficult to deliver the finished material to different directions due to the inflexible steering.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a mobile sand mixer. Background Art

[0002] Sand mixer is a casting equipment used to mix molding sand. Sand mixer generally has the following functions: evenly mix old sand, new sand, molding sand binder and auxiliary materials; evenly distribute the binder and auxiliary materials and effectively coat the surface of sand particles. According to the sand mixing process, sand mixer can be divided into: roller sand mixer with rolling and rubbing action as the main function; blade sand mixer with mixing action as the main function; countercurrent or rotor sand mixer with rubbing and mixing action; and pendulum sand mixer with rolling and mixing action.

[0003] Most of the existing sand mixers are fixed sand mixers, which have the advantages of high load capacity and good mixing effect. However, during the material feeding process, the mixed material needs to be manually delivered to the mold by a material transport vehicle, or the mold needs to be directly placed at the discharge port, and the next mold needs to be replaced after the material feeding is completed. The above two methods require a lot of manual participation, resulting in low work efficiency.

[0004] To this end, in order to facilitate flexible material unloading according to needs, mobile sand mixing equipment has gradually replaced fixed sand mixing equipment in the casting and construction fields. For example, the Chinese patent with application number 202011492924.X discloses "a new type of mobile lifting double-arm continuous sand mixer", and its content is "comprising a double-arm continuous sand mixer body, the lower end surface of the double-arm continuous sand mixer body is provided with a new type of steel plate base, the lower end outer surface of the new type of steel plate base is provided with a new type of electric mobile flat car, and the upper end outer surface of the new type of electric mobile flat car is provided with an independent electric control cabinet for the sand mixer, a pulse bag dust collector, a resin barrel for the continuous sand mixer, and a curing agent barrel for the continuous sand mixer. The new type of mobile lifting double-arm continuous sand mixer described in the present invention is installed with a pulse bag dust collector, which is oil-proof and waterproof, and the air inlet baffle design prevents large particles of dust from penetrating the filter bag. The pulse valve timing cleaning system ensures the cleaning effect, and the new type of steel plate base is installed. The new type of steel plate base is made of rolled steel plate, which is simple to manufacture and has good strength, and the slewing support and reducer are installed under the base, which is more convenient for maintenance."

[0005] Although the above arrangement facilitates the movement of the sand mixer, its sand discharge range can only cover one side of the mobile flat car, and the mobile flat car needs to turn to discharge sand to the other side. Since the entire equipment is large in size, its turning radius is also large, which requires sufficient space for the above equipment to turn. Therefore, the sand discharge task on one side can only be completed before the sand discharge task on the other side is taken care of, which leads to low work efficiency. Summary of the invention

[0006] In view of the above defects, the purpose of the present invention is to provide a mobile sand mixer, aiming to solve the problem in the prior art that the mobile sand mixer can only discharge sand to one side during linear motion, resulting in low working efficiency.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] A mobile sand mixer is provided with a mixing chamber, a first auger, a support platform and a driving platform in sequence from top to bottom, a discharge port is provided at the bottom of the mixing chamber, the discharge port is communicated with one side of the first auger, the support platform comprises a support section and a power section, a fixing groove is provided at one end of the driving platform facing the mixing chamber, the outer diameter of the support section is larger than the inner diameter of the fixing groove, the outer diameter of the power section is smaller than the inner diameter of the fixing groove, the power section is located in the fixing groove, the bottom of the support section is rotatably connected with the top of the driving platform; a plurality of convex structures are provided on the outer wall of the power section, a first motor is provided at the bottom of the fixing groove, a first gear is installed at the power end of the first motor, and the first gear is meshed and connected with the convex structure;

[0009] A plurality of supporting legs are arranged between the top of the supporting section and the mixing chamber, and a roller is installed at the bottom of the driving platform.

[0010] A limiting platform is also provided on the top of the driving platform, and the limiting platform is located between the fixing groove and the supporting section. An annular groove is provided on the top of the limiting platform, and a plurality of supporting balls are provided in the annular groove, and a partial area of ​​the supporting balls abuts against the bottom of the supporting section.

[0011] Wherein, the annular groove includes an outer groove body and an inner groove body, the outer groove body is arranged around the inner groove body, the inner groove body is arranged around the top of the fixed groove, a part of the supporting balls are located in the outer groove body, and the other part of the supporting balls are located in the inner groove body.

[0012] Among them, an annular clamping platform is installed on the top of the limiting platform, the outer wall of the supporting section is recessed toward the axis of the supporting section to form an annular clamping groove, and the annular clamping platform is rotatably connected to the annular clamping groove.

[0013] Among them, the annular clamping table includes an annular cavity, and a plurality of lubricating oil cavities are arranged between the annular cavity and the annular groove. One end of the lubricating oil cavity is connected to the annular cavity, and a lubricating ball is installed at the other end of the lubricating oil cavity, and a partial area of ​​the lubricating ball abuts against the annular groove; an oil storage tank is installed in the fixed groove, and an oil filling pipe is arranged between the oil storage tank and the annular cavity.

[0014] Wherein, an annular positioning protrusion is arranged in the annular groove, and the end of the positioning protrusion facing the lubricating ball is a concave surface, and the concave surface abuts against the lubricating ball.

[0015] Wherein, the outer wall of the lubricating ball is provided with a plurality of concave grooves, and the plurality of concave grooves are formed by the outer wall of the lubricating ball being sunken toward the center of the lubricating ball.

[0016] Among them, a hollow stirring column is vertically arranged in the stirring chamber, a plurality of stirring blades are installed on the side wall of the stirring column, a second motor is installed on one side of the stirring chamber, a power wheel is installed at the power end of the second motor, a limiting wheel is installed on the top of the stirring column, and the power wheel and the driving wheel are connected by a belt; a limiting ring is provided at the bottom of the stirring column, the limiting ring is rotatably connected to the stirring column, and a support arm is arranged between the limiting ring and the stirring chamber.

[0017] Among them, the stirring column includes a driving section, a fixed section, a stirring section and a feeding section from top to bottom, the limiting wheel is installed on the outer wall of the driving section, the top of the driving section is rotatably connected to the liquid inlet pipe, and a plurality of stirring blades are arranged around the stirring section; a liquid discharge tray is sleeved on the fixed section, the liquid discharge tray includes a liquid storage cavity, a plurality of liquid discharge heads are arranged at the bottom of the liquid discharge tray, a plurality of liquid discharge holes are arranged on the side wall of the fixed section, and the liquid discharge head is connected to the liquid storage cavity.

[0018] Wherein, the limiting ring is located between the stirring section and the material discharge section, and spiral blades are installed on the circumference of the material discharge section.

[0019] After adopting the above technical solution, the beneficial effects of the present invention are:

[0020] First, the first motor drives the support platform to rotate, so that the first auger and the mixing chamber can rotate 360 ​​degrees, so that the first auger can deliver the material to multiple directions, thereby solving the problem that the existing mobile sand mixer is difficult to deliver the finished material to different directions due to the inflexible steering. Second, the lubricating oil in the oil storage cavity is delivered to the support platform and the limit platform through the annular cavity, lubricating oil cavity, lubricating ball and other structures, so as to prevent the problem that the entire equipment is difficult to rotate due to the large friction when the support platform rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the structural diagram of the mobile sand mixer;

[0022] Figure 2 is a structural schematic diagram of the support platform;

[0023] Figure 3 for Figure 1 A partial enlarged view of a;

[0024] Figure 4 for Figure 3 A partial enlarged view of middle b;

[0025] Figure 5 It is a top view of the limit platform;

[0026] Figure 6 is a cross-sectional view of the lubricating ball;

[0027] Figure 7 It is the structural diagram of the stirring column;

[0028] Figure 8 This is a bottom view of the liquid discharge tray.

[0029] In the figure: 1-mixing chamber, 10-second motor, 101-power wheel, 102-limiting wheel, 11-mixing column, 111-mixing fan blade, 112-driving section, 113-fixed section, 114-mixing section, 115-feeding section, 1151-spiral fan blade, 12-limiting ring, 13-support arm, 14-liquid outlet plate, 141-liquid storage chamber, 142-liquid outlet head, 143-liquid outlet, 144-mixing rod, 1441-spiral blade, 1442-liquid outlet, 2-first auger, 3-support table, 31-support Segment, 311-annular groove, 312-positioning protrusion, 32-power segment, 321-protrusion structure, 4-driving platform, 40-roller, 41-fixed groove, 411-first motor, 412-first gear, 413-oil storage tank, 414-oil filling pipeline, 42-limiting platform, 421-annular groove, 4211-outer tank body, 4212-inner tank body, 4213-support ball, 422-annular clamping platform, 423-annular cavity, 424-lubricating oil cavity, 425-lubricating ball, 4251-concave surface, 5-second auger. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0031] Example:

[0032] like Figure 1-Figure 8 As shown, a mobile sand mixer is provided with a mixing chamber 1, a first auger 2, a support platform 3 and a driving platform 4 from top to bottom, and a discharge port is provided at the bottom of the mixing chamber 1, and the discharge port is connected to one side of the first auger 2. The mixing chamber 1 is used to mix the auxiliary material and the gravel evenly, and the function of the first auger 2 is to receive the finished material from the mixing chamber 1, and discharge the finished material to the outside and send it to the demand place.

[0033] In the above structure, the first auger 2 can only discharge in one direction and cannot freely choose the discharge direction. For this, the support platform 3 includes a support section 31 and a power section 32. The driving platform 4 is provided with a fixed groove 41 at one end facing the mixing chamber 1. The outer diameter of the support section 31 is larger than the inner diameter of the fixed groove 41. The outer diameter of the power section 32 is smaller than the inner diameter of the fixed groove 41. The power section 32 is located in the fixed groove 41. The bottom of the support section 31 is rotatably connected to the top of the driving platform 4. A plurality of protruding structures 321 are provided on the outer wall of the power section 32. A first motor 411 is provided at the bottom of the fixed groove 41. A first gear 412 is installed at the power end of the first motor 411. The first gear 412 is meshed and connected with the protruding structure 321. The first motor 411 drives the first gear 412 to rotate. Since the first gear 412 is meshed and connected with the protruding structure 321, the first gear 412 drives the power section 32 to rotate. Since the bottom of the support section 31 abuts against the top of the fixing groove 41, the power section 32 will drive the support section 31 to rotate. When the support section 31 rotates, it will drive the mixing bin 1 and the first auger 2 on the top thereof to rotate in the horizontal direction, so that the first auger 2 can discharge materials in multiple directions. In order to facilitate the movement of the sand mixer, a roller 40 is installed at the bottom of the driving platform 4. At this time, the driving platform 4 can be installed with a power device at its bottom, or it can be driven by a traction device to achieve its movement.

[0034] During the movement of the driving platform 4, the first motor 411 will drive the mixing bin 1 and the first auger 2 to rotate 360°, so the first auger 2 can deliver the finished material to multiple directions, avoiding the problem in the prior art that the sand mixer needs to turn to deliver the material to different positions, thereby improving the flexibility of the entire equipment.

[0035] In order to ensure stability, a plurality of supporting legs are provided between the top of the supporting section 31 and the mixing chamber 1 .

[0036] In order to ensure sufficient power for the rotation of the support platform 3, a third motor and a second gear are also installed at the bottom of the fixed groove 41. The second gear is connected to the power end of the third motor, and the second gear is meshed with the protruding structure 321. The third motor is symmetrical with the first motor 411.

[0037] In the above solution, the bottom of the support section 31 abuts against the top of the fixing groove 41, which does not affect the rotation of the support platform 3, but due to the large contact area and lack of lubrication means, it will cause serious wear of the drive platform 4 or the support platform 3. Figure 2-6As shown, a limiting platform 42 is further provided on the top of the driving platform 4, and the limiting platform 42 is located between the fixing groove 41 and the supporting section 31. An annular groove 421 is provided on the top of the limiting platform 42, and a plurality of supporting balls 4213 are provided in the annular groove 421, and a part of the supporting balls 4213 abuts against the bottom of the supporting section 31. The supporting balls 4213 reduce the contact area between the supporting platform 3 and the driving platform 4, thereby reducing the friction force, so that the first motor 411 can drive the supporting platform 3 to rotate with less consumption.

[0038] Preferably, the annular groove 421 includes an outer groove body 4211 and an inner groove body 4212, wherein the outer groove body 4211 is arranged around the inner groove body 4212, and the inner groove body 4212 is arranged around the top of the fixing groove 41, and a part of the supporting balls 4213 are located in the outer groove body 4211, and another part of the supporting balls 4213 are located in the inner groove body 4212. This design allows the support platform 3 to be double-limited by the inner and outer groove bodies 4211 when rotating, thereby preventing the support platform 3 from swinging when rotating.

[0039] In order to further prevent the support platform 3 from detaching from the driving platform 4, an annular clamping platform 422 is installed on the top of the limiting platform 42. The outer wall of the support section 31 is recessed toward the axis of the support section 31 to form an annular clamping groove 311. The annular clamping platform 422 is rotatably connected to the annular clamping groove 311.

[0040] In order to reduce the sluggish feeling when the support platform 3 rotates, the annular clamping platform 422 includes an annular cavity 423, and a plurality of lubricating oil cavities 424 are arranged between the annular cavity 423 and the annular groove 311. One end of the lubricating oil cavity 424 is connected to the annular cavity 423, and a lubricating ball 425 is installed at the other end of the lubricating oil cavity 424, and a part of the lubricating ball 425 abuts against the annular groove 311; an oil storage tank 413 is installed in the fixed groove 41, and an oil filling pipeline 414 is arranged between the oil storage tank 413 and the annular cavity 423. The annular cavity 423 is located inside the annular clamping platform 422, and its purpose is to store lubricating oil. The lubricating oil flows toward the annular groove 311 through the lubricating oil cavity 424. In order to avoid unnecessary waste of lubricating oil, a lubricating ball 425 is installed at one end of the lubricating oil cavity 424 away from the annular cavity 423. The lubricating ball 425 is rotatably arranged at one end of the lubricating oil cavity 424, and a part of the lubricating ball 425 contacts the inner wall of the annular groove 311, so that when the support platform 3 rotates, the friction between the annular groove 311 and the lubricating ball 425 will drive the lubricating ball 425 to rotate, and the lubricating ball 425 will continuously apply the lubricating oil in the lubricating oil cavity 424 to the annular groove 311 during rotation to complete lubrication. When there is too much lubricating oil in the annular groove 311, the lubricating oil will flow downward along the gap between the limiting platform 42 and the support platform 3 under the influence of gravity until the lubricating oil reaches the annular groove 421, and the lubricating oil will gather at the bottom of the annular groove 421. At this time, when the support ball 4213 rotates, the lubricating oil will be applied to the outer wall of the support ball 4213 to achieve lubrication of the support ball 4213.

[0041] In order to increase the contact area between the lubricating ball 425 and the annular groove 311 and speed up the output of lubricating oil, an annular positioning protrusion 312 is provided in the annular groove 311 . The end of the positioning protrusion 312 facing the lubricating ball 425 is a concave surface 4251 , and the concave surface 4251 abuts against the lubricating ball 425 .

[0042] In order to further speed up the output of lubricating oil, the outer wall of the lubricating ball 425 is provided with a plurality of concave grooves 4251 , which are formed by the outer wall of the lubricating ball 425 being sunken toward the center of the lubricating ball 425 .

[0043] In order to facilitate the delivery of finished materials to a further distance, a discharge port is provided at one end of the first auger 2 away from the mixing bin 1, and the discharge port is connected to the second auger 5. A counterweight bin is installed on the top of the support section 31, and the first auger 2 is located between the counterweight bin and the second auger 5. Counterweight material is provided in the counterweight bin, and its purpose is to prevent the first auger 2 from tipping over due to the heavy weight on one side when delivering materials.

[0044] In order to fully mix the gravel and the auxiliary materials, a hollow stirring column 11 is vertically arranged in the stirring chamber 1, and a plurality of stirring blades 111 are installed on the side wall of the stirring column 11. A second motor 10 is installed on one side of the stirring chamber 1, and a power wheel 101 is installed on the power end of the second motor 10. A limiting wheel 102 is installed on the top of the stirring column 11, and the power wheel 101 is connected to the driving wheel through a belt; a limiting ring 12 is sleeved on the bottom of the stirring column 11, and the limiting ring 12 is rotatably connected to the stirring column 11, and a support arm 13 is arranged between the limiting ring 12 and the stirring chamber 1. The second motor 10 drives the stirring column 11 to rotate through the belt, and the stirring column 11 will drive the stirring blades 111 to rotate when rotating, so as to complete the mixing of the powder.

[0045] In order to ensure the rotation stability of the stirring column 11 , a limit ring 12 is installed at the bottom of the stirring column 11 .

[0046] The auxiliary materials used in this solution are generally liquid. In order to evenly mix the liquid auxiliary materials with the gravel, we need to make the liquid auxiliary materials cover a larger area during the input process. Figure 7-8 As shown, the stirring column 11 includes a driving section 112, a fixed section 113, a stirring section 114 and a feeding section 115 from top to bottom, the limiting wheel 102 is installed on the outer wall of the driving section 112, the top of the driving section 112 is rotatably connected to a liquid inlet pipe, and a plurality of stirring blades 111 are arranged around the stirring section 114; a liquid outlet tray 14 is sleeved on the fixed section 113, the liquid outlet tray 14 includes a liquid storage cavity 141, a plurality of liquid outlet heads 142 are arranged at the bottom of the liquid outlet tray 14, a plurality of liquid outlet holes 143 are arranged on the side wall of the fixed section 113, and the liquid outlet heads 142 are connected to the liquid storage cavity 141. The liquid inlet pipe delivers the liquid auxiliary material to the hollow stirring column 11, and the liquid auxiliary material will move toward the liquid outlet tray 14 along the cavity of the stirring column 11. After the liquid auxiliary material reaches the fixed section 113, it will sequentially pass through the liquid outlet hole 143 to reach the liquid storage cavity 141, and finally reach the inside of the stirring chamber 1 through the liquid outlet head 142. In the above process, the liquid outlet plate 14 is sleeved on the outer wall of the fixed section 113, and the liquid outlet plate 14 and the fixed section 113 are fixedly connected. At this time, the stirring column 11 will drive the liquid outlet plate 14 to rotate when rotating, and the liquid auxiliary material will be thrown out to the surroundings, so the liquid auxiliary material will cover a larger range.

[0047] In order to further enhance the stirring effect, a plurality of stirring rods 144 are suspended at the bottom of the liquid outlet plate 14, and spiral blades 1441 are arranged on the circumference of the stirring rods 144. When the liquid outlet plate 14 rotates, the stirring rods 144 will drive the stirring rods 144 to rotate around the stirring column 11, and the stirring rods 144 will continuously stir the gravel during this process.

[0048] In order to further speed up the mixing of the liquid auxiliary material and the gravel, the interior of the stirring rod 144 is hollow, and a plurality of liquid discharge ports 1442 are provided on the side wall of the stirring rod 144 . One end of the stirring rod 144 is connected to the liquid storage chamber 141 .

[0049] In order to facilitate the delivery of the finished materials in the mixing bin 1 to the first auger 2 , the limiting ring 12 is located between the mixing section 114 and the material discharge section 115 , and spiral blades 1151 are installed on the circumference of the material discharge section 115 .

[0050] Since the first auger 2 protrudes outward, it is easy to shake due to external force. If the shaking amplitude is too large, the first auger 2 will break. For this reason, a support rod is provided between the side wall of the first auger 2 and the side wall of the mixing chamber 1, and a support frame is provided between the first auger 2 and the top of the support section 31.

[0051] In summary, this solution has the following advantages: First, the first motor 411 drives the support platform 3 to rotate, so that the first auger 2 and the mixing chamber 1 can rotate 360 ​​degrees, so that the first auger 2 can deliver the material to multiple directions, thereby solving the problem that the existing mobile sand mixer is difficult to deliver the finished material to different directions due to the inflexible steering. Second, the lubricating oil in the oil storage tank 413 is delivered to between the support platform 3 and the limit platform 42 through the annular cavity 423, the lubricating oil cavity 424, the lubricating ball 425 and other structures, so as to prevent the problem that the entire equipment is difficult to rotate due to the large friction when the support platform 3 rotates.

[0052] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work are all within the protection scope of the present invention.

Claims

1. A mobile sand mixer, comprising, from top to bottom, a mixing chamber (1), a first auger (2), a support platform (3) and a driving platform (4), wherein a discharge port is provided at the bottom of the mixing chamber (1), and the discharge port is communicated with one side of the first auger (2), and characterized in that: The support platform (3) comprises a support section (31) and a power section (32); a fixing groove (41) is provided at one end of the driving platform (4) facing the mixing chamber (1); the outer diameter of the support section (31) is larger than the inner diameter of the fixing groove (41); the outer diameter of the power section (32) is smaller than the inner diameter of the fixing groove (41); the power section (32) is located in the fixing groove (41); the bottom of the support section (31) is rotatably connected to the top of the driving platform (4); a plurality of protruding structures (321) are provided on the outer wall of the power section (32); a first motor (411) is provided at the bottom of the fixing groove (41); a first gear (412) is mounted on the power end of the first motor (411); the first gear (412) is meshingly connected to the protruding structure (321); A plurality of supporting legs are arranged between the top of the supporting section (31) and the mixing chamber (1), and a roller (40) is installed at the bottom of the driving platform (4); A limiting platform (42) is also provided on the top of the driving platform (4), the limiting platform (42) being located between the fixing groove (41) and the supporting section (31), an annular groove (421) being provided on the top of the limiting platform (42), a plurality of supporting balls (4213) being provided in the annular groove (421), and a part of the supporting balls (4213) being in contact with the bottom of the supporting section (31); The annular groove (421) comprises an outer groove body (4211) and an inner groove body (4212); the outer groove body (4211) is arranged around the inner groove body (4212); the inner groove body (4212) is arranged around the top of the fixed groove (41); a portion of the supporting balls (4213) are located in the outer groove body (4211), and another portion of the supporting balls (4213) are located in the inner groove body (4212); An annular clamping platform (422) is installed on the top of the limiting platform (42); the outer wall of the supporting section (31) is recessed toward the axis of the supporting section (31) to form an annular clamping groove (311); and the annular clamping platform (422) is rotatably connected to the annular clamping groove (311); The annular clamping platform (422) comprises an annular cavity (423), a plurality of lubricating oil cavities (424) are arranged between the annular cavity (423) and the annular clamping groove (311), one end of the lubricating oil cavity (424) is connected to the annular cavity (423), a lubricating ball (425) is installed at the other end of the lubricating oil cavity (424), and a partial area of ​​the lubricating ball (425) abuts against the annular clamping groove (311); an oil storage tank (413) is installed in the fixing groove (41), and an oil injection pipeline (414) is arranged between the oil storage tank (413) and the annular cavity (423); An annular positioning protrusion (312) is provided in the annular groove (311); one end of the positioning protrusion (312) facing the lubricating ball (425) is a concave surface (4251), and the concave surface (4251) abuts against the lubricating ball (425); The outer wall of the lubricating ball (425) is provided with a plurality of concave surface (4251) grooves, and the plurality of concave surface (4251) grooves are formed by the outer wall of the lubricating ball (425) being concave toward the center of the lubricating ball (425).

2. A mobile sand mixer according to claim 1, characterized in that: A hollow stirring column (11) is vertically arranged in the stirring chamber (1), and a plurality of stirring blades (111) are installed on the side wall of the stirring column (11). A second motor (10) is installed on one side of the stirring chamber (1), and a power wheel (101) is installed on the power end of the second motor (10). A limiting wheel (102) is installed on the top of the stirring column (11), and the power wheel (101) is connected to the driving wheel via a belt; a limiting ring (12) is sleeved on the bottom of the stirring column (11), and the limiting ring (12) is rotatably connected to the stirring column (11), and a support arm (13) is arranged between the limiting ring (12) and the stirring chamber (1).

3. A mobile sand mixer according to claim 2, characterized in that: The stirring column (11) comprises, from top to bottom, a driving section (112), a fixed section (113), a stirring section (114) and a feeding section (115); the limiting wheel (102) is mounted on the outer wall of the driving section (112); the top of the driving section (112) is rotatably connected to a liquid inlet pipe; a plurality of stirring blades (111) are arranged around the stirring section (114); a liquid outlet tray (14) is sleeved on the fixed section (113); the liquid outlet tray (14) comprises a liquid storage cavity (141); a plurality of liquid outlet heads (142) are arranged at the bottom of the liquid outlet tray (14); a plurality of liquid outlet holes (143) are arranged on the side wall of the fixed section (113); the liquid outlet heads (142) are in communication with the liquid storage cavity (141).

4. A mobile sand mixer according to claim 3, characterized in that: The limiting ring (12) is located between the stirring section (114) and the material discharge section (115), and spiral blades (1151) are installed in the circumferential direction of the material discharge section (115).

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