CN110480844A - A kind of cement sand and gravel material mixers - Google Patents

Abstract

The invention discloses a cemented sand and gravel material mixer, which comprises a base, a motor arranged on the base, and a stirring tank. There is a shaft hole in the middle of the side wall, and a bearing is set in the shaft hole, and the stirring shaft is installed in the inner seal of the bearing. The two ends of the stirring shaft are installed on the support frame through the outer bearing. Gears, the stirring shafts on the left and right sides of the stirring tank are fixed with driving gears, and the driving gears are meshed with the driven gears; the invention drives the stirring shaft to rotate through the motor, and the stirring shaft drives the stirring tank to rotate reversely through the driving gear , so that the mixing tank and the stirring paddle rotate at different speeds, so that the cemented sand and gravel materials are fully mixed, which is beneficial to improving the mixing efficiency and quality of the cemented sand and gravel materials.

Description

A cemented sand and gravel material mixer

technical field

The invention relates to the technical field of laboratory production equipment, in particular to a cemented sand and gravel material mixer.

Background technique

The cemented sand and gravel material is obtained by excavating sand and gravel from the river bed of the dam site or excavation waste materials or rock substrates that are easily obtained near the dam site, and then adding cementitious materials (ie cement, fly ash) and water, and stirring The new type of building material has been applied to practical projects, such as Nagashima Dam in Japan, Cindere Dam in Turkey, Moriguchi Castle Project in China, etc. The two most notable features of cemented sand and gravel are that aggregates do not need to be sieved and used for cementitious materials. Small amount (usually less than 100kg/m ³ ); due to the coarse and fine aggregate gradation of cemented sand and gravel will not be the best ratio, and the amount of glue used is small, the glue of coarse and fine aggregate in the cemented sand and gravel system The slurry encapsulation rate is low, and it needs to be stirred very evenly during the material preparation process.

With the gradual popularization and application of materials, a large number of indoor experiments are used to study the characteristics of cemented sand and gravel materials. However, the existing laboratory mixers do not have mixers specially designed for mixing cemented sand and gravel materials. The existing concrete mixers use cement , sand and gravel aggregate and water are mixed and mixed into concrete mixture, which is mainly composed of mixing bucket, stirring paddle, prime mover, transmission mechanism, frame and supporting device; In the process of mixing cemented sand and gravel materials, existing concrete mixers are prone to jamming and uneven mixing of aggregates. Horizontal mixing tanks also cause coarse aggregates to sink due to various materials due to gravity factors. It makes the mixing of the mixture uneven, which affects the material performance and experimental results.

Contents of the invention

Aiming at the defects and problems existing in the existing mixers, the present invention provides a cemented sand and gravel material mixer. When the stirring paddle rotates, the stirring tank is driven to rotate in the opposite direction, so that the stirring tank and the stirring paddle rotate at different speeds, so that the gelled sand and gravel can be obtained. Fully stir to improve the mixing efficiency and quality of cemented sand and gravel.

The solution adopted by the present invention to solve the technical problem is: a cemented sand and gravel material mixer, including a base, a motor arranged on the base and a mixing tank, the motor is connected to the mixing tank through transmission, and the mixing tank is a horizontal barrel Structure, the left and right sides of the mixing tank are provided with shaft holes in the middle of the left and right side walls, bearings are set inside the shaft holes, and the inner seal of the bearing is installed with a stirring shaft. Both ends of the stirring shaft are installed on the support frame through outer bearings. One end is connected with the driving mechanism; driven gears are fixedly installed on the left and right ends of the stirring tank, and driving gears are fixedly set on the stirring shafts on the left and right sides of the stirring tank, and the driving gear is meshed with the driven gear; A material inlet and outlet are opened on the peripheral side wall of the stirring tank, a stirring tank cover is sealed and installed on the material inlet and outlet, and sliding devices are fixedly connected to the left and right sides of the stirring tank cover.

The sliding device includes a sliding track, a pulley and an L-shaped connecting rod. The edges corresponding to the left and right ends of the mixing tank and the inlet and outlet are arranged symmetrically along the circumference with an arc-shaped sliding track, and a plurality of pulleys are set inside the sliding track. , the middle part of the pulley is provided with a shaft hole, and a bearing is set in the shaft hole; a plurality of L-shaped connecting rods are symmetrically arranged on the left and right sides of the stirring tank cover, and the connecting rods include a fixed section and a connecting section. The bottom of the section is provided with a shaft hole, the connecting section is arranged radially outside the side wall, the fixed section is axially welded on the upper end surface of the arc-shaped stirring cover, and the connecting section is fixed through the fixed pin and the bearing in the middle of the pulley. firmly connected together.

The left and right ends of the mixing tank are fixed with driven gears along the diagonal line through high-strength bolts, so that the mixing tank can achieve a uniform weight.

A closed layer is provided on the upper wall of the track at one end of the sliding track corresponding to the inlet and outlet, and a top-facing layer is provided on the lower wall of the track at the other end of the track, or the sliding track includes an open track and a closed track. Open track and closed track run through.

Positioning bolt holes are provided on the corresponding side of the sliding track and the pulley, or threaded screw holes are provided at the lower end of the L-shaped connecting rod.

The stirring shaft in the stirring tank is equipped with a stirring paddle, and the left and right sides of the stirring tank are provided with support frames, and the top of the support frame is provided with shaft holes, and outer bearings are set in the shaft holes. The two ends of the stirring shaft are respectively fixedly installed in the outer bearings of the support frames on the left and right sides of the mixing tank, the bottom of the support frame is fixed on the base, and 4 wheels are fixedly installed on the bottom surface of the base.

The transmission ratio between the driven gear and the driving gear is greater than 1, and a reverse speed difference is generated when the driving gear drives the driven gear to rotate.

Both the left and right ends of the mixing tank are welded with steel rods radially along the circumference.

Beneficial effects of the present invention: the cemented sand and gravel material mixer of the present invention has a simple structure. By installing driving gears on the stirring shafts on both sides of the mixing tank, the driven gears arranged on the left and right ends of the mixing tank are driven to rotate along the diagonal, thereby The tank body of the mixing tank and the mixing paddle in the mixing tank have different speeds and directions of rotation, achieving the effect of reverse differential speed mixing, and avoiding the coarse aggregate falling down due to gravity factors in various materials in the horizontal mixing tank. sink, so that the material is evenly mixed and the experimental results are optimized.

The motor drives the stirring shaft to rotate, and the stirring shaft drives the mixing tank to rotate in reverse through the driving gear, so that the mixing tank and the stirring paddle rotate at a different speed, so that the cemented sand and gravel materials can be fully mixed, which is conducive to improving the mixing efficiency and quality of the cemented sand and gravel. .

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is another perspective view of FIG. 1 .

Fig. 3 is one of the structural schematic diagrams of the stirring tank of the present invention.

Fig. 4 is a side structural schematic diagram of the stirring tank in Fig. 2 .

Fig. 5 is one of the structural schematic diagrams of the L-shaped connecting rod of the present invention.

Fig. 6 is the second structural schematic diagram of the side view of the stirring tank of the present invention.

Fig. 7 is the second structural diagram of the L-shaped connecting rod of the present invention.

Fig. 8 is the third structural schematic diagram of the stirring tank of the present invention.

FIG. 9 is a schematic side view of the structure of FIG. 3 .

Numbers in the figure: 1 is the roller, 2 is the base, 3 is the triangular support frame, 4 is the bearing, 5 is the mixing tank, 6 is the sliding track, 601 is the open track, 602 is the closed track, 7 is the pulley, 8 is the driving gear , 9 is a driven gear, 10 is a high-strength bolt, 11 is a stirring cover, 12 is a handle, 13 is a stirring shaft, 14 is a stirring paddle, 15 is a motor, 18 is an L-shaped connecting rod, 1801 is a fixed section, and 1802 is a connection Section, 19 is fixed pin, and 20 is support bearing, and 21 is bolt, and 22 is axle hole, and 23 is threaded hole, and 24 is steel bar, and 25 is top-to-layer, and 26 is closure layer, and 27 is anchor bolt hole.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example 1

As shown in Figure 1, a cemented sand and gravel material mixer includes a base 2, a motor 15 arranged on the base, and a stirring tank 5, the motor 15 is connected to the mixing tank 5, and the mixing tank 5 is horizontal barrel-shaped structure, the stirring tank 5 has a shaft hole in the middle of the left and right side walls, the shaft hole is set with a support bearing 20, the support bearing 20 is sealed and installed with the stirring shaft 13, and the two ends of the stirring shaft 13 are fixed and installed on the outer bearing 4 On the support frame 3, one end of the stirring shaft 13 is connected to the driving mechanism; the left and right ends of the stirring tank 5 are fixed with driven gears 9 through high-strength bolts 10, and the stirring shafts 13 on the left and right sides of the stirring tank 5 are The upper fixed sleeve is provided with a driving gear 8, and the driving gear 8 is meshed with the driven gear 9; the peripheral side wall of the mixing tank 5 is provided with a material inlet and outlet, and the mixing tank cover 11 is sealed and installed on the inlet and outlet. A handle 12 is installed in the middle of the upper end of the mixing tank 5 , and sliding devices are fixedly connected to the left and right sides of the mixing tank cover 11 .

As shown in Figure 9, the sliding device includes a sliding track 6, a pulley 7 and an L-shaped connecting rod 18, and the edges corresponding to the left and right ends of the mixing tank 5 and the inlet and outlet are provided with an arc-shaped sliding track 6 symmetrically along the circumference, One end track upper wall corresponding to the inlet and outlet of the sliding track 6 is provided with a closed layer 26, and the other end track lower wall of the track is provided with a top-facing layer 25. A pulley 7, one side of the corresponding position of the sliding track 6 and the pulley 7 is provided with a positioning bolt hole 27, and the middle part of the pulley 7 is provided with a shaft hole, and a bearing is sleeved in the shaft hole.

As shown in Figure 5, a plurality of L-shaped connecting rods 18 are symmetrically arranged on the left and right sides of the stirring tank cover, and the L-shaped connecting rods 18 include a fixed section 1801 and a connecting section 1802, and the bottom of the connecting section 1802 is provided with There is a shaft hole 22, the connecting section 1802 is arranged radially outside the side wall, the fixing section 1801 is axially welded on the upper end surface of the arc-shaped stirring tank cover 11, and the connecting section 1802 is fixed to the pulley 7 through a fixing pin. The bearings in the middle are fixedly connected together.

When the pulley 7 was in the track with the closed layer 26, the distance between the pulley 7 and the peripheral side wall of the stirring tank 5 increased, but the length of the L-shaped connecting rod 18 was constant, so that the stirring tank cover 11 was made by the L-shaped connecting rod 18. Tightly fixed on the material inlet and outlet, a set bolt is installed in the set bolt hole 27 on one side of the pulley 7, which is used to limit the position of the L-shaped connecting rod 18, and prevent the pulley 7 from rolling to drive the stirring tank cover 11 to shift during the stirring process.

As shown in Figure 1, the left and right ends of the stirring tank shown are all fixed with driven gears 9 along the diagonal by bolts, so that the stirring tank reaches a uniform counterweight, and the rotating speed of the driven gear 9 and the stirring tank 5 Consistent with the direction, the rotation direction of the driving gear 8 is opposite to that of the driven gear 9. Since the diameters of the driving gear 8 and the driven gear 9 are different, the rotating speeds are also different, so that the mixing tank 5 achieves the effect of reverse differential stirring. Effect.

As shown in Figure 3, the left and right ends of the mixing tank 5 are provided with driven gears 9 along the diagonal, and the middle part of the upper end surface of the driven gear 9 is evenly provided with 4 bolt holes along the circumference. The high-strength bolts 10 are fixedly installed on the left and right ends of the stirring tank 5, and the stirring shafts 13 on the left and right sides of the stirring tank 5 are equipped with a driving gear 8, and the driven gear 9 is meshed with the driving gear 8. The gear ratio of the driven gear 9 and the driving gear 8 is greater than 1.

When the motor 15 drove the stirring shaft 13 to rotate, the stirring paddle 14 set on the stirring shaft 13 in the stirring tank 5 followed the rotation of the stirring shaft 13, and the rotating speed and direction of the stirring paddle 14 were consistent with the stirring shaft 13. The driving gear 8 set on the shaft 13 is consistent with the rotating speed and direction of the stirring shaft 13, and the driving gear 8 drives the driven gear 9 meshed with it to rotate, and the driven gear 9 drives the stirring tank 5 to rotate. Driven gear 9 is consistent with the rotating speed and direction of stirring tank 5, and the rotation direction of described driving gear 8 and driven gear 9 is opposite, because the diameter of driving gear 8 and driven gear 9 is different, so rotating speed is also different, thereby makes stirring Tank 5 achieves the effect of reverse differential stirring.

The left and right sides of the stirring tank are provided with support frames, and the top of the support frame is provided with shaft holes, and outer bearings are set in the shaft holes, and the two ends of the stirring shaft are fixedly installed on the left and right sides of the stirring tank respectively. In the outer bearing of the support frame, the bottom of the support frame is fixed on the base, and 4 wheels are fixedly installed on the bottom surface of the base.

Water-stop rubber is arranged around the inlet and outlet of the mixing tank, and when the stirring cover is covered on the inlet and outlet, it plays a good sealing role.

Embodiment 2, as shown in Figure 6, a cemented sand and gravel material mixer, including a motor 15, is characterized in that, the bottom surface of the motor 15 is provided with a motor bracket, the motor bracket is fixed on the base 2, and the left side of the motor is Two supporting frames 3 are arranged at intervals, and the two supporting legs of the supporting frames 3 are fixed on the base plate 2, and the tops of the supporting frames 3 are provided with shaft holes, and outer bearings 4 are sleeved in the shaft holes; A stirring tank 5 is arranged between the two support frames 3, and the middle part of the two side walls of the stirring tank 5 has a shaft hole, and a supporting bearing 20 is set in the shaft hole, and a stirring shaft 13 is set inside the supporting bearing 20, When the stirring shaft 13 rotates, it will not directly drive the stirring tank 5 to rotate. The stirring shaft 13 in the stirring tank 5 is equipped with a stirring paddle 14, and the left and right ends of the stirring shaft 13 extend to the outside of the stirring tank 5 and are set on In the supporting bearing of the support tripod 3, the right end of the stirring shaft 13 is connected with the rotating shaft of the motor 15; There is an inlet and outlet on the edge of the side wall, and an arc-shaped stirring tank cover 11 is arranged on the inlet and outlet. 12 can make stirring jar cover 11 move by sliding device.

The sliding mechanism includes a sliding track 6, a pulley 7 and an L-shaped connecting rod 18. The edges corresponding to the left and right end surfaces of the mixing tank 5 and the inlet and outlet are symmetrically arranged with an arc-shaped sliding track 6 along the circumference, and the sliding track 6 includes Open track 601 and closed track 602, the open track 601 and closed track 602 pass through, the distance between the open track 601 and the center of the side wall is greater than the distance between the closed track 602 and the center of the side wall, the sliding track 6 A plurality of pulleys 7 are sleeved inside, and the middle part of the pulley 7 is provided with a shaft hole, and a bearing is sleeved in the shaft hole.

As shown in Figure 7, a plurality of L-shaped connecting rods 18 are symmetrically arranged on the left and right sides of the mixing tank cover 11, and the L-shaped connecting rods 18 include a fixed section 1801 and a connecting section 1802, and the middle part of the connecting section 1802 A shaft hole is provided, the connecting section 1802 is arranged radially outside the side wall, the fixed section 1801 is axially welded on the upper end surface of the stirring tank cover 11, and the connecting section 1802 passes through the fixing pin 19 and the middle part of the pulley 7 The bearings are fixedly connected together,

Pull the handle 12 on the stirring tank cover 11 to make the stirring tank cover 11 drive the moving pulley 7 to move in the sliding track 6. When the stirring tank cover 11 drives the pulley 7 to move to the opening track 601, the stirring tank cover 11 will completely leave the material in and out. When the inlet and outlet are above the inlet and outlet, the inlet and outlet are fully opened, and when the stirring tank cover 11 drives the pulley 7 to move into the closed track 602, after the stirring tank cover 11 is completely covered on the inlet and outlet, the inlet and outlet are completely closed, and the There is a water-stop rubber around the inlet and outlet, which plays a good sealing role when the mixing cover covers the inlet and outlet, ensuring that water, cement, gravel and other materials will not leak.

The bottom end of the connecting section 1802 is provided with a threaded hole 23, and a bolt 21 is set in the threaded hole 23. When the stirring tank cover 11 moves, the L-shaped connecting rods 18 with the bolt 21 are respectively fixed by tightening the bolt 21. On the left and right end surfaces of the stirring tank 5, the position of the stirring tank cover 11 is locked.

Apply the device of this embodiment to the mixing operation of cemented sand and gravel materials. First, the device is assembled, and the bolts 21 on the connecting section 1802 in the L-shaped connecting rod 18 are loosened, and the handle 12 on the cover 11 of the mixing tank is pulled, The stirring tank cover 11 drives the pulley 7 to move from the closed track 602 to the opening track 601. When the stirring tank cover 11 drives the pulley 7 to move into the opening track 601, when the stirring tank cover 11 completely leaves the top of the inlet and outlet, the in and out Fully open the feed port, tighten the bolts 21 on the connecting section 1802 of the L-shaped connecting rod 18, so that the L-shaped connecting rods 18 fitted with the bolts 21 are respectively fixed on the left and right ends of the mixing tank 5, thereby locking the cover of the mixing tank 11 position, start to fill the stirring material in the mixing tank 5 from the inlet and outlet.

After the filling is completed, unscrew the bolt 21 on the connecting section 1802 of the L-shaped connecting rod 18, pull the handle 12, and drive the stirring tank cover 11 to move towards the direction of the inlet and outlet, when the stirring tank cover 11 drives the pulley 7 to move to the closed track 602 Inside, after the mixing tank cover 11 completely covers the inlet and outlet, tighten the bolt 21, thereby locking the position of the mixing tank cover 11, so that the inlet and outlet are completely closed, and the water-stop rubber on the inlet and outlet has a good sealing effect.

Turn on the motor 15, the motor 15 drives the stirring paddle 14 set on the stirring shaft 13 to rotate to start the stirring operation, the driving gear 8 on the stirring shaft 13 drives the stirring tank 5 to rotate through the driven gear 9, the direction of rotation of the driven gear 9 It is opposite to the rotation direction of the stirring shaft, so that the rotation speed and direction of the mixing tank 5 are different from the rotation speed and direction of the stirring paddle 14 in the mixing tank 5, so as to achieve the reverse differential mixing effect and ensure that the water, cement, gravel and other materials are in the same direction. The tank is fully stirred.

Example 3

As shown in Figure 8, steel rods 24 are evenly welded on the left and right ends of the mixing tank 5 along the radial direction of the circumference.

When unloading, stop the motor 15, and when the mixing tank 5 stops rotating, insert the steel rod 24 with the sleeve rod, pull the steel rod 24 to make the mixing tank 5 rotate, make the inlet and outlet of the mixing tank 5 upward, and unscrew the L-shaped connecting rod The bolt 21 on the connection section 1802 on 18 pulls the handle 12 to drive the stirring tank cover 11 to leave the inlet and outlet. When the stirring tank cover 11 drives the pulley 7 to move to the opening track 601, the stirring tank cover 11 completely leaves the inlet and outlet. When the mouth is above, the inlet and outlet openings are fully opened. After tightening the bolts 21 on the connecting section 1802, insert the steel rod 24 with a sleeve rod, and pull the steel rod 24 to rotate the mixing tank 5 so that the mixing tank 5 enters the outlet. Downward, the material inlet and outlet start to unload, and after the unloading is completed, insert the steel rod 24 again using the sleeve rod, rotate the mixing tank 5 to make the inlet and outlet of the mixing tank 5 upward, and start to transport materials into the mixing tank 5 through the inlet and outlet , when the feeding is completed, unscrew the bolt 21 on the connecting section 1802 on the L-shaped connecting rod 18, pull the handle 12, and drive the stirring tank cover 11 to move to the inlet and outlet, when the stirring tank cover 11 drives the pulley 7 to move to the closed In the track 602, after the mixing tank cover 11 is completely covered on the inlet and outlet, the bolts 21 are tightened so that the L-shaped connecting rods 18 fitted with the bolts 21 are respectively fixed on the left and right ends of the mixing tank 5, thereby locking the mixing tank cover The position of 11 makes the inlet and outlet tightly closed.

Claims (9)

1. a kind of cement sand and gravel material mixers, including pedestal, the motor and agitator tank that are set on the base, motor and stirring Tank transmission connection, which is characterized in that the agitator tank is horizontal barrel-like structure, is all provided in the middle part of wall at left and right sides of the agitator tank Axis hole is set with bearing in axis hole, agitating shaft is sealed and installed in bearing, agitating shaft both ends are mounted on support frame by outer bearing On, one end of the agitating shaft is connect with driving mechanism；It is fixedly installed with driven gear in the agitator tank left and right ends, institute It states fixing sleeve on the agitating shaft at left and right sides of agitator tank and driving gear is housed, the driving gear engages connection with driven gear； It is provided with feed inlet and outlet on the agitator tank circumferential side wall, stirring cover, the agitator tank are sealed and installed on the feed inlet and outlet The left and right sides of lid is all fixedly connected with carriage.

2. cement sand and gravel material mixers according to claim 1, which is characterized in that the carriage includes sliding Track, pulley and L-type connecting rod, agitator tank left and right ends edge corresponding with feed inlet and outlet are circumferentially symmetrically arranged with arc Sliding rail is all set with multiple pulleys in the sliding rail, axis hole is equipped in the middle part of the pulley, is set with axis in axis hole It holds；It is symmetrically arranged with multiple L shape connecting rods at left and right sides of the stirring cover, the connecting rod includes fixed section and linkage section, described The bottom of linkage section is equipped with axis hole, and the linkage section is radially arranged in outside the side wall, and the fixed section is axially welded on arc Mixing cover upper surface, the linkage section are fixed together by fixed pin and the bearing at the solid middle part of pulley.

3. cement sand and gravel material mixers according to claim 1, which is characterized in that the agitator tank left and right ends Driven gear is diagonally all fixedly installed with by high-strength bolt, so that agitator tank is reached counterweight uniform.

4. cement sand and gravel material mixers according to claim 1 or 2, which is characterized in that the sliding rail with The corresponding one end track upper wall of feed inlet and outlet is equipped with closed layer, the other end track lower wall of the track be equipped with top to layer or The sliding rail includes opening track and closed orbit, the opening track and closed orbit perforation.

5. cement sand and gravel material mixers according to claim 4, which is characterized in that the sliding rail and pulley Corresponding position side is designed with positioning bolt hole or the lower end of the L-type connecting rod is designed with threaded screw hole.

6. cement sand and gravel material mixers according to claim 1, which is characterized in that the agitating shaft in the agitator tank On agitating paddle is installed, support frame is designed at left and right sides of the agitator tank, the top of support frame as described above is designed with axis hole, axis Outer bearing is all set in hole, the agitating shaft both ends are respectively and fixedly installed to the outer bearing of support frame at left and right sides of agitator tank Interior, the bottom of support frame is fixedly installed with 4 wheels with being scheduled on pedestal on the bottom surface of pedestal.

7. cement sand and gravel material mixers according to claim 1, which is characterized in that the driven gear and driving tooth The gear ratio of wheel is greater than 1, and driving gear generates reversed speed difference when driving driven gear rotation.

8. cement sand and gravel material mixers according to claim 1, which is characterized in that the agitator tank feed inlet and outlet Surrounding is provided with watertight rubber.

9. cement sand and gravel material mixers according to claim 1, the agitator tank left and right ends all circumferentially diameters To being welded with steel rod.