CN210633871U

CN210633871U - Efficient forced stirring device for roller compacted concrete externally doped with magnesium oxide

Info

Publication number: CN210633871U
Application number: CN202020146082.1U
Authority: CN
Inventors: 洪文聪; 吴毅峰; 王艺勇; 许志坤
Original assignee: Fujian Yucheng Construction Engineering Co ltd; Guangdong No 2 Hydropower Engineering Co Ltd
Current assignee: Fujian Yucheng Construction Engineering Co ltd; Guangdong No 2 Hydropower Engineering Co Ltd
Priority date: 2020-01-23
Filing date: 2020-01-23
Publication date: 2020-05-29
Anticipated expiration: 2030-01-23

Abstract

The utility model relates to an efficient forced stirring device for externally-doped magnesium oxide roller compacted concrete, which comprises a frame, a suspension mixing mechanism and a concrete stirring mechanism which are arranged on the frame according to the height, and a pressurizing mechanism for suspension liquid inlet, wherein the suspension mixing mechanism comprises a suspension stirring tank, a sealing cover is arranged on the top fixing device of the suspension stirring tank, a tubular stirring shaft is rotatably arranged at the center of the sealing cover, and a plurality of corresponding suspension liquid discharging ports are arranged on the tubular stirring shaft; concrete mixing mechanism contains the concrete mixing jar, the bottom of tubulose (mixing) shaft extends to the top of concrete mixing jar, and the downward rigid coupling in bottom of tubulose (mixing) shaft has a corresponding material axle of mixing, and the bottom both sides of tubulose (mixing) shaft are the horizontality intercommunication respectively and are connected with corresponding water-distributor, the bottom of water-distributor is provided with a plurality of suspension liquid outlets respectively. The utility model discloses can effectively promote the distribution uniformity of magnesium oxide in the concrete by a wide margin.

Description

Efficient forced stirring device for roller compacted concrete externally doped with magnesium oxide

Technical Field

The utility model relates to a high-efficient agitating unit of forcing of roller compacted concrete specifically indicates a high-efficient agitating unit of forcing of outer magnesium oxide roller compacted concrete.

Background

The technology of damming by adding magnesium oxide (MgO) is an important temperature control anti-cracking technology for damming by rolling concrete in high-temperature areas, and the uniformity of MgO in the rolling concrete is a key index of quality control. For a long time, MgO-doped roller compacted concrete exists: the problems of extremely low mixing work efficiency, high construction cost, unstable uniformity and quality and the like are the technical problems which puzzle the construction boundary for a long time. In the traditional roller compacted concrete's stirring process, the mode of mixing magnesium oxide is generally direct through artifical material (magnesium oxide powder) of throwing, throws the mode of material through the manual work and carries out magnesium oxide (MgO) and mix outward, and the unable evenly distributed of material is in roller compacted concrete, in order to ensure the distribution uniformity of magnesium oxide in concrete, can only realize through prolonging the churning time by a wide margin, and not only production operating efficiency is extremely low, and the homogeneity of magnesium oxide hardly reaches ideal level.

In order to improve the distribution uniformity of magnesium oxide in concrete, the most common practice at present is to mix and stir magnesium oxide, water and other additives in advance by an external stirring tank to form a magnesium oxide suspension, and then uniformly add the magnesium oxide suspension into the concrete in a multipoint liquid distribution manner. The magnesium oxide suspension is added in a multi-point liquid distribution mode, although the adding uniformity of magnesium oxide is improved to a certain degree, the distribution uniformity of magnesium oxide in concrete is improved to a certain degree, and the stirring duration is shortened to a certain degree. However, in general, the adding process of the magnesium oxide is still performed in a fixed-point manner, so that the adding uniformity of the magnesium oxide cannot be greatly improved, and in the feeding process of the magnesium oxide suspension, the problem that the liquid distribution holes are blocked due to concrete splashing is easily caused, so that the magnesium oxide is difficult to be effectively and uniformly added.

Consequently, design a section can effectively break through the limitation that the fixed point added, realizes the even interpolation of the magnesium oxide suspension in the region to effectively promote the homogeneity of distribution of magnesium oxide in the concrete by a wide margin, and can effectively ensure that the magnesium oxide suspension does not produce the problem that the liquid outlet is blockked up adding the in-process, thereby effectively improve practical effect mix the high-efficient agitating unit of forcing of magnesium oxide roller compacted concrete outward and be the utility model discloses a research purpose.

Disclosure of Invention

To the technical problem that above-mentioned prior art exists, the utility model provides an it forces agitating unit to mix magnesia roller compacted concrete high efficiency outward, this mix the high-efficient technical problem who forces agitating unit of magnesia roller compacted concrete outward and can effectively solve above-mentioned prior art existence.

The technical scheme of the utility model is that:

the efficient forced stirring device for the roller compacted concrete doped with the magnesium oxide comprises a rack, a suspension mixing mechanism, a concrete stirring mechanism and a pressurizing mechanism for suspension liquid inlet, wherein the suspension mixing mechanism and the concrete stirring mechanism are arranged on the rack in a height-dependent manner; the suspension liquid drainage openings are respectively and fixedly connected with corresponding liquid inlet pipes inwards, the inner ends of the liquid inlet pipes are fixedly connected with corresponding pipe sealing plates, corresponding sealing balls are arranged in the liquid inlet pipes in a movable mode, corresponding reset springs are respectively connected between the inner ends of the sealing balls and the pipe sealing plates, and the bottom ends of the liquid inlet pipes are provided with corresponding liquid inlets on the inner sides of the sealing balls; the suspension liquid inlet pressurizing mechanism comprises an air compressor and a pressurizing pipe connected to an air outlet of the air compressor, and the pressurizing pipe is connected to one side of the top end of the sealing cover through a corresponding electromagnetic valve; the bottom center of the suspension stirring tank is downwards connected with a corresponding communicating pipe, the concrete stirring mechanism comprises a concrete stirring tank, the top center of the concrete stirring tank is communicated and connected to the communicating pipe, the bottom end of the tubular stirring shaft extends to the top of the concrete stirring tank, and at least one corresponding waterproof sealing bearing is arranged between the bottom end of the tubular stirring shaft and the inner side wall of the communicating pipe; the bottom of tubulose (mixing) shaft is the rigid coupling downwards has a corresponding material axle of mixing, it has a plurality of corresponding material blade boards of mixing to mix epaxial evenly distributed rigid coupling of material, and the bottom both sides of tubulose (mixing) shaft are horizontal state intercommunication connection respectively and are connected with corresponding water-distributor, the bottom of water-distributor evenly is provided with a plurality of corresponding suspension liquid outlets respectively.

One side of closing cap is equipped with corresponding filling tube, but the last headstock gear of filling tube has corresponding apron, the one end of apron articulates on the filling tube, the other end of apron is effectively locked through corresponding locking bolt to the other end of filling tube.

The top of concrete mixing jar leans out the intercommunication and is connected with corresponding loading hopper, and the bottom of concrete mixing jar sets the cambered surface form into, and the downward intercommunication of bottom center department of concrete mixing jar is connected with corresponding unloading pipe, fixing device has corresponding unloading valve on the unloading pipe.

The driving mechanism comprises a driving motor and a speed reducer connected to the output shaft end of the driving motor in a transmission manner, and the top end of the tubular stirring shaft is connected to the output shaft end of the speed reducer in a transmission manner.

The tubular stirring shaft is made of a seamless steel pipe, and the material stirring shaft is fixedly connected to the tubular stirring shaft in a welding mode.

The stirring shaft is characterized in that two sides of the bottom of the tubular stirring shaft are respectively and integrally provided with corresponding lugs downwards, the material stirring shaft is respectively and correspondingly provided with corresponding clamping grooves at positions corresponding to the lugs, and the lugs are fixedly connected to the corresponding clamping grooves of the material stirring shaft in a welding mode.

And two corresponding waterproof sealing bearings are arranged between the bottom end of the tubular stirring shaft and the inner side wall of the communicating pipe.

The utility model has the advantages that:

1) the utility model discloses a mix between the material axle of stirring of concrete mixing mechanism and the tubulose (mixing) shaft of suspension mixing mechanism through the rigid coupling formation whole and realize the synchronous drive operation by same set of actuating mechanism. Before the roller compacted concrete is stirred and produced, concrete production raw materials such as cement, gravel and the like are added into a concrete stirring tank, and simultaneously magnesium oxide, water and other additives are added into a suspension stirring tank; then starting a driving mechanism to drive a tubular stirring shaft and a material mixing shaft to synchronously rotate, thereby driving a suspension stirring blade plate and a material mixing blade plate to synchronously carry out magnesium oxide suspension preparation stirring operation and primary stirring operation of roller compacted concrete; after the driving motor is started for a period of time, the suspension liquid inlet is started by an air compressor of the pressurizing mechanism to effectively pressurize the suspension stirring tank, the sealing ball moves inwards under the pressure of the magnesium oxide suspension liquid, the liquid inlet of the liquid inlet pipe is effectively communicated with the liquid inlet end of the liquid inlet pipe, the magnesium oxide suspension liquid quickly enters the tubular stirring shaft under high pressure and is sprayed out along the suspension liquid outlet at the bottom of the water distribution pipe under the high pressure state to be uniformly added into the concrete under stirring. In the adding process of the suspension, the water distribution pipe rotates along with the tubular stirring shaft, so that the limitation of fixed-point adding is broken through, the uniform adding of the magnesium oxide suspension in the area is realized, and the distribution uniformity of the magnesium oxide in the concrete is effectively and greatly improved.

2) And the interpolation in-process of whole magnesium oxide suspension is realized under the high pressure state that lasts, not only can effectively improve the interpolation speed of magnesium oxide suspension and the steady maintenance of addition, and can effectively ensure that magnesium oxide suspension does not produce the problem that the liquid outlet is blockked up adding the in-process to effectively on the basis of improving reinforced even degree, improve the utility model discloses a practical effect.

3) The utility model discloses a tubulose (mixing) shaft is formed by seamless steel pipe preparation, mixes the material axle and arrives through the welding mode rigid coupling on the tubulose (mixing) shaft, the bottom both sides of tubulose (mixing) shaft become the integration respectively and are provided with corresponding lug downwards, mix the material axle and correspond respectively on the position corresponding with the lug and be provided with corresponding draw-in groove, the lug adopts the welding mode rigid coupling to arrive mix on the corresponding draw-in groove of material axle. Through the lug setting of tubulose (mixing) shaft bottom and mix the epaxial draw-in groove setting of material and effectively form the joint on welded basis, not only effectively improved the connection steadiness of tubulose (mixing) shaft and mixing material axle, and improved the stirring operation in-process, the torsion atress ability of tubulose (mixing) shaft and the junction of mixing the material axle to further effectively improve the utility model discloses a practical effect.

Drawings

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

Fig. 2 is a schematic structural view of a return spring connected between the sealing ball and the tube sealing plate.

Fig. 3 is a diagram showing a state of use when the sealing ball is moved inward by pressure.

Detailed Description

To facilitate understanding of those skilled in the art, the structure of the present invention will now be described in further detail with reference to the following examples:

referring to fig. 1-3, an efficient forced stirring device for roller compacted concrete doped with magnesium oxide comprises a frame 1, a suspension mixing mechanism 2 and a concrete mixing mechanism 3 which are arranged on the frame 1 in height, and a pressurizing mechanism 4 for suspension liquid inlet, wherein the suspension mixing mechanism 2 comprises a suspension stirring tank 201, a corresponding sealing cover 5 is arranged on a top fixing device of the suspension stirring tank 201, a corresponding tubular stirring shaft 202 is arranged at the center of the sealing cover 5 in a downward rotating manner, the tubular stirring shaft 202 is driven by a driving mechanism 6 arranged on the top of the sealing cover 5, a plurality of suspension stirring blade plates 203 are uniformly and fixedly connected to the tubular stirring shaft 202, and a plurality of corresponding suspension liquid discharge ports are uniformly distributed on the tubular stirring shaft 202 in height; the suspension liquid drainage openings are respectively and fixedly connected with corresponding liquid inlet pipes 7 inwards, the inner ends of the liquid inlet pipes 7 are fixedly connected with corresponding pipe sealing plates 8, corresponding sealing balls 9 are arranged in the liquid inlet pipes 7 in a movable mode, corresponding reset springs 10 are respectively connected between the inner ends of the sealing balls 9 and the pipe sealing plates 8, and the bottom ends of the liquid inlet pipes 7 are provided with corresponding liquid inlets 11 on the inner sides of the sealing balls 9; the suspension liquid feeding pressurization mechanism 4 comprises an air compressor 401 and a pressurization pipe 402 connected to an air outlet of the air compressor 401, wherein the pressurization pipe 402 is connected to one side of the top end of the cover 5 through a corresponding electromagnetic valve 12; the bottom center of the suspension stirring tank 201 is connected with a corresponding communicating pipe 13 downwards, the concrete stirring mechanism 3 comprises a concrete stirring tank 301, the top center of the concrete stirring tank 301 is connected to the communicating pipe 13 in a communicating manner, the bottom end of the tubular stirring shaft 202 extends to the top of the concrete stirring tank 301, and two corresponding waterproof sealing bearings 14 are arranged between the bottom end of the tubular stirring shaft 202 and the inner side wall of the communicating pipe 13; the bottom end of the tubular stirring shaft 202 is fixedly connected with a corresponding material mixing shaft 302 downwards, a plurality of corresponding material mixing blade plates 303 are fixedly distributed on the material mixing shaft 302 uniformly, two sides of the bottom end of the tubular stirring shaft 202 are respectively connected with corresponding water distribution pipes 15 in a horizontal state in a communicating manner, and a plurality of corresponding suspension liquid outlets 16 are respectively and uniformly arranged at the bottom ends of the water distribution pipes 15.

One side of the sealing cover 5 is provided with a corresponding filling pipe 17, an opening and closing device on the filling pipe 17 is provided with a corresponding cover plate 18, one end of the cover plate 18 is hinged to the filling pipe 17, and the other end of the cover plate 18 is effectively locked to the other end of the filling pipe 17 through a corresponding locking bolt 19. The top of concrete mixing jar 301 communicates and is connected with corresponding loading hopper 20 that leans out, and the bottom of concrete mixing jar 301 sets up the arcwall form, and the bottom center department of concrete mixing jar 301 communicates downwards and is connected with corresponding unloading pipe 21, fixing device has corresponding unloading valve 22 on the unloading pipe 21. The driving mechanism 6 comprises a driving motor 601 and a speed reducer 602 which is connected to the output shaft end of the driving motor 601 in a transmission manner, and the top end of the tubular stirring shaft 202 is connected to the output shaft end of the speed reducer 602 in a transmission manner.

The tubular stirring shaft 202 is made of a seamless steel pipe, and the stirring shaft 302 is fixedly connected to the tubular stirring shaft 202 in a welding manner. The two sides of the bottom of the tubular stirring shaft 202 are respectively and integrally provided with corresponding lugs 23 downwards, the material mixing shaft 302 is respectively and correspondingly provided with corresponding clamping grooves at positions corresponding to the lugs 23, and the lugs 23 are fixedly connected to the corresponding clamping grooves of the material mixing shaft 302 in a welding mode.

The utility model discloses the operation flow who carries out roller compacted concrete production as follows:

1) before the roller compacted concrete is stirred and produced, concrete production raw materials such as cement, gravel and the like are added into a concrete stirring tank 301 through a charging hopper 20, and simultaneously magnesium oxide, water and other additives are added into a suspension stirring tank 201 through a charging pipe 17;

2) the cover plate 18 is effectively locked on the charging pipe 17 in a sealing way by the locking bolt 19, and then the driving motor 601 of the driving mechanism 6 is started to drive the tubular stirring shaft 202 and the mixing shaft 302 to realize synchronous rotation, so that the suspension stirring blade plate 203 and the mixing blade plate 303 are driven to synchronously carry out magnesium oxide suspension preparation stirring operation and primary stirring operation of roller compacted concrete;

3) after the driving motor 601 is started for a period of time, the suspension liquid is effectively pressurized by the air compressor 401 of the pressurizing mechanism 4, the sealing ball 9 moves inwards under the pressure of the magnesium oxide suspension liquid, the liquid inlet 11 of the liquid inlet pipe 7 is effectively communicated with the liquid inlet end of the liquid inlet pipe 7, the magnesium oxide suspension liquid rapidly enters the tubular stirring shaft 202 under high pressure, and is sprayed out along the suspension liquid outlet 16 at the bottom of the water distribution pipe 15 under high pressure to be uniformly added into the concrete under stirring;

4) in the interpolation process of suspension, water distributor 15 forms the rotation along with tubulose (mixing) shaft 202, thereby break through the limitation that the fixed point added, realize the even interpolation of the magnesium oxide suspension in the region, effectively promote the homogeneity of distribution of magnesium oxide in the concrete by a wide margin, the interpolation in-process of whole magnesium oxide suspension is realized under the high-pressure state that lasts, not only can effectively improve the interpolation speed and the addition steady maintenance of magnesium oxide suspension, and can effectively ensure that the magnesium oxide suspension does not produce the problem that the liquid outlet is blockked up at the interpolation in-process, thereby effectively improve the utility model discloses a practical effect.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an it forces agitating unit to admix magnesium oxide roller compacted concrete high-efficient, include frame (1) and set up according to the height in suspension mixing mechanism (2) and concrete mixing mechanism (3) on frame (1) to and loading system (4), its characterized in that for the suspension feed liquor:

the suspension mixing mechanism (2) comprises a suspension stirring tank (201), a corresponding sealing cover (5) is arranged on a top fixing device of the suspension stirring tank (201), a corresponding tubular stirring shaft (202) is installed at the center of the sealing cover (5) in a downward rotating mode, the tubular stirring shaft (202) is driven by a driving mechanism (6) which is fixedly arranged on the top of the sealing cover (5), a plurality of suspension stirring blade plates (203) are uniformly and fixedly connected onto the tubular stirring shaft (202), and a plurality of corresponding suspension liquid discharging ports are uniformly distributed on the tubular stirring shaft (202) according to the height; the suspension liquid drainage openings are respectively and fixedly connected with corresponding liquid inlet pipes (7) inwards, the inner ends of the liquid inlet pipes (7) are fixedly connected with corresponding pipe sealing plates (8), corresponding sealing balls (9) are arranged in the liquid inlet pipes (7) in a movable mode, corresponding reset springs (10) are respectively connected between the inner ends of the sealing balls (9) and the pipe sealing plates (8), and the bottom ends of the liquid inlet pipes (7) are provided with corresponding liquid inlet ports (11) on the inner sides of the sealing balls (9);

the suspension liquid inlet pressurizing mechanism (4) comprises an air compressor (401) and a pressure increasing pipe (402) connected to an air outlet of the air compressor (401), and the pressure increasing pipe (402) is connected to one side of the top end of the cover (5) through a corresponding electromagnetic valve (12);

the bottom center of the suspension stirring tank (201) is downwards connected with a corresponding communicating pipe (13), the concrete stirring mechanism (3) comprises a concrete stirring tank (301), the top center of the concrete stirring tank (301) is connected to the communicating pipe (13) in a communicating manner, the bottom end of the tubular stirring shaft (202) extends to the top of the concrete stirring tank (301), and at least one corresponding waterproof sealing bearing (14) is arranged between the bottom end of the tubular stirring shaft (202) and the inner side wall of the communicating pipe (13); the bottom of tubulose (202) is the rigid coupling downwards has a corresponding material axle (302) of stirring, it has a plurality of corresponding material of stirring vane board (303) to stir evenly distributed rigid coupling on material axle (302), and the bottom both sides of tubulose (202) are the horizontal state intercommunication respectively and are connected with corresponding water distributor (15), the bottom of water distributor (15) evenly is provided with a plurality of corresponding suspension liquid outlets (16) respectively.

2. The high-efficiency forced stirring device for the externally-doped magnesium oxide roller compacted concrete according to claim 1, which is characterized in that: one side of closing cap (5) is equipped with corresponding filling tube (17), but filling tube (17) go up the headstock gear have corresponding apron (18), the one end of apron (18) articulates in on filling tube (17), the other end of apron (18) is effectively locked through corresponding locking bolt (19) to the other end of filling tube (17).

3. The high-efficiency forced stirring device for the externally-doped magnesium oxide roller compacted concrete according to claim 1, which is characterized in that: the top of concrete mixing jar (301) leans out the intercommunication to be connected with corresponding loading hopper (20), and the bottom of concrete mixing jar (301) sets to the arcwall form, and the bottom center department of concrete mixing jar (301) communicates downwards and is connected with corresponding unloading pipe (21), fixing device has corresponding unloading valve (22) on unloading pipe (21).

4. The high-efficiency forced stirring device for the externally-doped magnesium oxide roller compacted concrete according to claim 1, which is characterized in that: the driving mechanism (6) comprises a driving motor (601) and a speed reducer (602) which is in transmission connection with the output shaft end of the driving motor (601), and the top end of the tubular stirring shaft (202) is in transmission connection with the output shaft end of the speed reducer (602).

5. The high-efficiency forced stirring device for the externally-doped magnesium oxide roller compacted concrete according to claim 1, which is characterized in that: the tubular stirring shaft (202) is made of a seamless steel pipe, and the stirring shaft (302) is fixedly connected to the tubular stirring shaft (202) in a welding mode.

6. The efficient forced stirring device for the externally-doped magnesium oxide roller compacted concrete according to claim 5, which is characterized in that: the stirring device is characterized in that two sides of the bottom of the tubular stirring shaft (202) are respectively and integrally provided with corresponding lugs (23) downwards, corresponding clamping grooves are respectively and correspondingly arranged on the positions, corresponding to the lugs (23), of the stirring shaft (302), and the lugs (23) are fixedly connected to the corresponding clamping grooves of the stirring shaft (302) in a welding mode.

7. The high-efficiency forced stirring device for the externally-doped magnesium oxide roller compacted concrete according to claim 1, which is characterized in that: and two corresponding waterproof sealing bearings (14) are arranged between the bottom end of the tubular stirring shaft (202) and the inner side wall of the communicating pipe (13).