CN108015895B - A kind of concrete batch plant - Google Patents

Abstract

The present invention relates to the technical field of agitators that rotate around a horizontal or substantially horizontal axis, in particular to a concrete mixing device, comprising a forward-reversing motor, a support frame, a mixing shaft and a mixing bucket; the mixing bucket is provided with a discharging part; and It includes a ring-shaped rotating part, the rotating part is rotatably connected to the upper end of the mixing barrel, and the rotating part is provided with an opening; the inner wall of the upper part of the opening is provided with a retaining ring and a helical tooth; the inner wall of the lower part of the opening is an arc surface; the stirring shaft There is a support rod on it, the end of the support rod is provided with a friction part, the upper part of the friction part is hinged with a pawl and a limit block, and the pawl is in contact with the helical teeth; the lower part of the friction part is an arc strip; the barrel wall of the mixing barrel The inner rotation is connected to the annular column, and the upper end of the annular column forms a curling edge outward and is fixedly connected with the arc surface; the rotating part is provided with a water inlet part. This solution can not only enter the water evenly, but also prevent the concrete from overflowing and falling to the ground during the mixing process.

Description

A concrete mixing equipment

technical field

The invention relates to the technical field of agitators having an axial rotation around a vertical direction, in particular to a concrete mixing device.

Background technique

At present, concrete mixers are mostly used in the field of construction, mainly for mixing and storage of concrete. During the operation of the concrete mixer, a large amount of water needs to be added to the mixer to facilitate the mixing of sand and stone aggregates with cement.

The existing mixer is a machine in which a shaft with blades rotates in a cylinder or a tank, and a variety of raw materials are stirred and mixed to form a mixture. The construction of houses and farmland infrastructure requires a mixer to mix concrete. People often use a mixer. This mixer includes a mixing bucket set on the frame. The upper end of the mixing bucket is open, and the bottom is provided with a discharge port with a cover plate. A plurality of stirring rods with stirring blades are arranged in the bottom of the stirring barrel. The upper part of the stirring rods is fixedly connected with the stirring shaft located in the middle of the stirring barrel. The stirring shaft extends out of the bottom of the stirring barrel to connect the reducer and the motor. When adding water to the mixer, generally one end of the water pipe is connected to the water tank or faucet, and the other end of the water pipe is directly placed in the mixer to add water.

The prior art has the following technical problems: 1, when the mixer adds water, directly place the water pipe in the mixing bucket and add water, because the amount of water added is large, and the amount of water added can affect the viscosity of the concrete in the later stage; The aggregate and cement directly contacted by the water in the water pipe will be wetted by water first, while the untouched part on the other side is still dry; the water cannot be evenly immersed into the mixing tank from all sides, which affects the mixing efficiency; 2. Mixing In the process of mixing, the phenomenon of aggregate or cement overflowing often occurs, that is, the aggregate or cement easily overflows from the upper end of the mixing bucket during the mixing process and falls to the ground; and the concrete will form a hard solid after solidification, which is not easy to Cleaning it off the ground will not only affect the processing environment, but also easily cause waste of aggregate or cement; 3. After the concrete is mixed, if the concrete is stirred continuously, the concrete will be over-mixed and the quality of the concrete will be affected; but not mixing will cause the concrete Solidification occurs.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a concrete mixing device, which can not only enter the water evenly, but also prevent the concrete from overflowing and falling to the ground during the mixing process.

For achieving the above object, the basic scheme of the present invention is as follows:

A concrete mixing equipment comprises a forward-reverse motor, a support frame, a mixing barrel with an open upper end, and a mixing shaft driven by the forward-reverse motor; the mixing barrel is fixedly connected to the support frame; the forward-reverse motor is located at the bottom of the mixing barrel; The mixing barrel is provided with a discharge part for discharging materials; it also includes a ring-shaped rotating part, the rotating part is rotatably connected to the upper end of the mixing barrel, and the rotating part is provided with an opening communicating with the mixing barrel, and the diameter of the opening is larger than that of the mixing barrel. The barrel diameter of the barrel; a ring of baffle rings and a ring of helical teeth are arranged on the inner wall of the upper part of the opening, and the helical teeth are located above the baffle ring; the inner wall of the lower part of the opening is an arc surface, and the position of the arc surface is lower than the mixing barrel There is a support rod on the stirring shaft, the end of the support rod is provided with a friction part, and the upper part of the friction part is hinged with a pawl and a limit block for limiting the pawl; the limit block is located on the pawl. The pawl is in contact with the helical teeth, and the pawl can drive the rotating part to rotate; the lower part of the friction part is an arc-shaped strip that cooperates with the arc-shaped surface; the barrel wall of the mixing barrel is provided with a circle of rotating cavity, and the rotating cavity A ring-shaped column is rotatably connected, and the upper end of the ring-shaped column extends to the upper end of the mixing barrel and forms a curling edge outward in the direction of the arc-shaped surface, and the curling edge is fixedly connected with the arc-shaped surface; The slideway is connected with the cavity, and the slideway is slidably connected with a fixed rod, one end of the fixed rod is fixedly connected with the lower end of the annular column, and the other end of the fixed rod is fixedly connected with a scraping strip for scraping the inner wall of the mixing barrel; It is used for the water inlet part that flows water into the opening.

The beneficial effects of this program are:

1. In this scheme, when the water enters the opening, it enters the opening through the water inlet. Since the inner wall of the lower part of the opening is an arc surface, and the position of the arc surface is lower than the mouth of the mixing bucket, the water will first The lower part of the opening is filled, then slowly overflows from the opening, and flows into the mixing bucket along the wall of the mixing bucket; thus, water is added to the mixing bucket evenly from all around, and then water is added from the inner wall of the mixing bucket. The cement and aggregate are slowly immersed in the middle part; together with the mixing shaft, the cement and aggregate in the mixing tank are mixed, and then the concrete is gradually formed.

2. In this scheme, the forward and reverse motor is used to drive the stirring shaft; there are the following two motion processes:

When the forward and reverse motor rotates, the stirring shaft drives the support rod to rotate. At this time, the pawl will contact the helical teeth and rotate under the toggle of the helical teeth. If it overflows, the cement or aggregate will fall into the arc surface at the lower part of the opening; since the stirring shaft will drive the support rod to rotate, the friction part at the end of the support rod will also rotate, because the lower part of the friction part is connected to the arc surface. The matching arc bar, so the arc bar will push the cement or aggregate on the arc surface during the rotation, so that the cement or aggregate returns to the mixing tank. In addition, since water will enter the mixing bucket during the mixing process, part of the cement or aggregate overflowing on the arc surface at the lower part of the opening will also return to the mixing bucket with the water flow. In conclusion, this solution It can prevent the concrete from overflowing and falling to the ground during the mixing process.

After the concrete mixing is completed, the forward and reverse motor rotates in the opposite direction to the previous rotation, and the stirring shaft drives the pawl to rotate. At this time, the pawl will be limited by the limit block, and the pawl will no longer rotate freely, and the pawl will not rotate freely. The end of the rotating part will press against the helical teeth and then drive the rotating part to rotate; when the rotating part rotates, it will drive the annular column fixedly connected with the arc surface to rotate, the annular part drives the fixed rod to rotate, and the fixed rod drives the scraping bar to the inner wall of the mixing barrel. Scraping; and then realize that not only the mixing shaft is mixing the concrete, but also the scraping bar is still scraping the inner wall of the mixing bucket, which also realizes the mixing of the concrete; if the material needs to be taken at this time, open the discharge part, The concrete is gradually discharged from the discharge part, and the setting of the scraping bar can prevent the concrete from remaining on the inner wall of the mixing bucket.

3. The setting of the retaining ring is mainly to block the cement, aggregate or water and prevent the cement, aggregate or water in the mixing barrel from contacting the helical teeth.

Preferred scheme 1: As a further optimization of the basic scheme, the water inlet part is a water inlet pipe, and the water inlet pipe is connected with the lower part of the opening.

It is very simple to add water to the mixing barrel; when using it, directly connect the water pipe connected to the faucet to the water inlet pipe.

Preferred solution 2: As a further optimization of the preferred solution 1, the stirring shaft includes a main shaft and a stirring support rod, and the stirring support rod is fixedly connected to the main shaft.

It is very simple to realize the mixing of cement and aggregate in the mixing tank.

Preferred solution 3: As a further optimization of the preferred solution 2, the stirring support rod is wavy. It further facilitates the mixing of cement and aggregate to form concrete.

Option 4: As a further optimization of Option 3, the annular column is provided with a water inlet channel for passing water into the slideway.

So that the water can enter the slideway through the water inlet channel, and then into the mixing barrel; not only is it convenient to add water to the middle of the mixing barrel, but also the slideway can be cleaned when cleaning the mixing barrel in the later stage.

Preferred scheme five: as a further optimization of preferred scheme four, the discharge part is a discharge pipe, and the discharge pipe is located at the bottom of the mixing barrel. It is very simple to realize the discharge of concrete in the mixing tank.

Preferred scheme 6: As a further optimization of the preferred scheme 5, a frequency converter for speed regulation of the forward and reverse rotation motors is connected to the forward and reverse rotation motors.

In the prior art, because the speed of concrete mixing is relatively fast, and after the concrete mixing is completed, if the original speed is still used for stirring, it is easy to cause excessive mixing of the concrete, which affects the quality of the concrete; but not mixing will cause the concrete to solidify. .

In this scheme, the frequency converter is used to realize the speed regulation of the forward and reverse rotation motors; when the concrete mixing is completed, the forward and reverse rotation motors rotate in the opposite direction to the original rotation, and the inverter is started at this time, thereby reducing the speed of the forward and reverse rotation motors; It can realize low-speed mixing of concrete; and in the process of mixing, the scraping bar can continuously scrape the inner wall of the mixing bucket to prevent the concrete from sticking to the inner wall; at this time, the discharge pipe can be opened at any time for discharging. .

Description of drawings

Fig. 1 is a sectional view of a concrete mixing plant of the present invention;

Fig. 2 is the partial structure schematic diagram of the annular column in Fig. 1;

FIG. 3 is a schematic structural diagram of the friction part in FIG. 1 .

Detailed ways

The present invention is described in further detail below by specific embodiments:

The reference signs in the accompanying drawings 1, 2 and 3 of the description include: forward and reverse rotation motor 1, stirring shaft 11, main shaft 111, stirring support rod 112, support frame 2, stirring barrel 3, discharge pipe 31, annular column 32. Crimping 321, water inlet channel 322, slideway 33, fixing rod 331, scraping strip 332, rotating part 4, opening 41, arc surface 411, retaining ring 42, helical teeth 43, water inlet pipe 44, support Rod 5 , friction part 51 , pawl 511 , limit block 512 , arc bar 513 , frequency converter 6 .

As shown in Figure 1, Figure 2 and Figure 3, in order to achieve the above purpose, the basic scheme of the present invention is as follows:

A concrete mixing equipment, comprising a forward-reverse motor 1, a support frame 2, an annular rotating part 4, a mixing shaft 11 driven by the forward-reverse motor 1, and a mixing barrel 3 with an open upper end; the mixing barrel 3 is fixedly connected to the support frame 2; the forward and reverse rotation motor 1 is located at the bottom of the mixing barrel 3, and the forward and reverse rotation motor 1 is connected with a frequency converter 6 for speed regulation of the forward and reverse rotation motor 1. The mixing barrel 3 is provided with a discharging part for discharging; the discharging part is a discharging pipe 31 , and the discharging pipe 31 is located at the bottom of the mixing barrel 3 .

The rotating part 4 is provided with an opening 41 that communicates with the mixing barrel 3 , and the opening 41 makes the rotating part 4 form a ring shape. The center of the opening 41 and the center of the mixing drum 3 are located on the same vertical axis. The diameter of the opening 41 is larger than the barrel diameter of the mixing barrel 3 , so that the rotating part 4 is covered on the upper end of the mixing barrel 3 , and the rotating part 4 can rotate freely. The lower end of the rotating part 4 extends inward, so that the inner wall of the lower part of the opening 41 forms an arc-shaped surface 411 . In order to realize the free rotation of the rotating part 4, the lower end of the rotating part 4 is provided with an annular protrusion, the outer wall of the mixing bucket 3 is provided with a ring of annular grooves, and the annular protrusion is slidably connected to the side wall of the annular groove.

A ring of retaining rings 42 and a ring of helical teeth 43 are arranged on the inner wall of the upper part of the opening 41 , and the helical teeth 43 are formed by inclined plates inclined to the right. The ring of helical teeth 43 is located above the baffle ring 42, and the position of the arc surface 411 is lower than the barrel mouth of the stirring barrel 3; the stirring shaft 11 is provided with a support rod 5, and the end of the support rod 5 is provided with a friction part 51, As shown in FIG. 3 , the upper part of the friction part 51 is hinged with a pawl 511 and a limit block 512 for limiting the pawl 511; the limit block 512 is located on the left side of the pawl 511; 43 contact, and the pawl 511 can drive the rotating part 4 to rotate; the lower part of the friction part 51 is an arc-shaped strip 513 that cooperates with the arc-shaped surface 411; the barrel wall of the mixing barrel 3 is provided with a circle of rotating cavity, and the rotating cavity is connected by rotation There is an annular column 32, and the upper end of the annular column 32 extends to the upper end of the mixing barrel 3 and forms a curling edge 321 outward in the direction of the arc-shaped surface 411, and the curling edge 321 is fixedly connected with the arc-shaped surface 411; the inner wall of the mixing drum 3 There is a slideway 33 connected to the rotating cavity. A fixed rod 331 is slidably connected in the slideway 33. One end of the fixed rod 331 is fixedly connected with the lower end of the annular column 32, and the other end of the fixed rod 331 is fixedly connected with a scraper for scraping. The scraping strip 332 on the inner wall of the mixing barrel 3; the rotating part 4 is provided with a water inlet part for passing water into the opening 41. The water inlet part is a water inlet pipe 44 , and the water inlet pipe 44 communicates with the lower part of the opening 41 .

The stirring shaft 11 includes a main shaft 111 and a stirring support rod 112 , and the stirring support rod 112 is fixedly connected to the main shaft 111 . The stirring rod 112 is wavy. It further facilitates the mixing of cement and aggregate to form concrete. The annular column 32 is provided with a water inlet channel 322 for passing water into the slideway 33 .

When in use, the faucet and the water inlet pipe 44 are connected through a communication pipe, and then the water inlet pipe 44 is opened; because the inner wall of the lower part of the opening 41 is an arc surface 411, and the position of the arc surface 411 is lower than that of the mixing barrel 3. Therefore, the water will first fill the lower part of the opening 41, and then slowly overflow from the opening 41, and flow into the mixing bucket 3 along the barrel wall of the mixing bucket 3; thus, the water will be evenly distributed from all around. Add in the mixing bucket 3, and then slowly immerse the cement and aggregate from the inner wall of the mixing bucket 3 into the middle part. Start the forward and reverse rotation motor 1 at the same time. When in use, there are two processes of clockwise and counterclockwise rotation:

clockwise rotation:

The forward and reverse motor 1 drives the stirring shaft 11 to rotate clockwise, and the stirring shaft 11 stirs the cement and aggregate in the mixing tank 3 . At the same time, the stirring shaft 11 drives the support rod 5 to rotate. At this time, the pawl 511 will contact the helical tooth 43 and swing to the left under the toggle of the helical tooth 43; When the mouth of the barrel overflows, the cement or aggregate will fall into the arc surface 411 at the lower part of the opening 41; since the stirring shaft 11 will drive the support rod 5 to rotate, the friction part 51 at the end of the support rod 5 will also rotate. The lower part of the part 51 is an arc-shaped strip 513 that is matched with the arc-shaped surface 411 , so the arc-shaped strip 513 will push the cement or aggregate on the arc-shaped surface 411 during the rotation, so that the cement or aggregate returns to the mixing bucket 3 Inside. In addition, since water will enter the mixing bucket 3 during the mixing process, part of the cement or aggregate overflowing on the arc surface 411 at the lower part of the opening 41 will also return to the mixing bucket 3 with the water flow. When the water intake in the mixing barrel reaches the requirement, immediately close the water inlet pipe and remove the connecting pipe from the water inlet pipe.

Anticlockwise rotation:

After the concrete mixing is completed, the forward and reverse rotation motor 1 rotates counterclockwise, and at the same time, the inverter 6 is turned on, and the inverter 6 makes the forward and reverse rotation motor 1 decelerate. The stirring shaft 11 drives the pawl 511 to rotate. At this time, the pawl 511 will be limited by the limiting block 512 , the pawl 511 will not rotate freely, and the end of the pawl 511 will press against the helical teeth 43 to drive the rotating part 4 Rotation; when the rotating part 4 rotates, it will drive the annular column 32 fixedly connected with the arc-shaped surface 411 to rotate, the annular part drives the fixed rod 331 to rotate, and the fixed rod 331 drives the scraping bar 332 to scrape the inner wall of the mixing barrel 3; Further, it is realized that not only the mixing shaft 11 is stirring the concrete, but also the scraping bar 332 is still scraping the inner wall of the mixing bucket 3, which also realizes the mixing of the concrete; The concrete is gradually discharged from the discharge pipe 31 , and the scraping bar 332 can prevent the concrete from remaining on the inner wall of the mixing drum 3 . In the process of counterclockwise rotation in this solution, the rotation speed of the forward and reverse rotation motor 1 is reduced. Although the rotation speed is reduced, the scraping strip 332 can continuously scrape the inner wall of the mixing bucket 3 to prevent the concrete from sticking to the inner wall; At this time, the discharging pipe 31 can be opened at any time for discharging.

The above are only the embodiments of the present invention, and common knowledge such as well-known specific structures and characteristics in the solution are not described too much here. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effectiveness and utility of patents. The scope of protection claimed in this application shall be based on the content of the claims, and the descriptions of the specific implementation manners in the description can be used to interpret the content of the claims.

Claims (7)

1. a kind of concrete batch plant, including clockwise and anticlockwise motor, support frame, the agitator of upper end opening and by clockwise and anticlockwise motor The agitating shaft of drive；The agitator is fixedly connected on the support frame；The clockwise and anticlockwise motor is located at the bottom of agitator；It is described Agitator is equipped with the discharging portion for discharging；It is characterized in that, further include the rotation section of annular, the rotation section rotation connection In the upper end of agitator, rotation section is equipped with the opening being connected to agitator, and open diameter is greater than the bucket diameter of agitator；Institute The inner wall for stating open top is equipped with a circle baffle ring and a circle helical teeth, and helical teeth is located at the top of baffle ring；The inner wall of open lower part is Arcwall face, and the position of arcwall face is lower than the bung hole of agitator；The agitating shaft is equipped with support rod, and the end of support rod is equipped with The top in friction portion, the friction portion is hinged with pawl and the limited block for being limited to pawl；The limited block is located at The side of pawl；The pawl is contacted with the helical teeth, and pawl can drive rotation section to rotate；The lower part in the friction portion be with The arc strip of the arcwall face cooperation；It is equipped with a circle in the bucket wall of the agitator and rotates chamber, the intracavitary rotation connection of rotation There is circular column, the upper end of the circular column reaches the upper end of agitator and is outwardly formed crimping towards the direction of the arcwall face, The crimping is fixedly connected with the arcwall face；The inner wall of the agitator is equipped with the slideway that a circle is connected to rotation chamber, described Fixed link is slidably connected in slideway, one end of the fixed link is fixedly connected with the lower end of the circular column, fixed link it is another One end, which is fixedly connected with, scrapes rub piece for scrape agitator inner wall；The rotation section be equipped with for into opening water flowing into Water portion.

2. a kind of concrete batch plant according to claim 1, which is characterized in that the water entering section is water inlet pipe, and Water inlet pipe is connected to open lower part.

3. a kind of concrete batch plant according to claim 2, which is characterized in that the agitating shaft includes main shaft and stirs Strut is mixed, the stirring strut is fixedly connected on main shaft.

4. a kind of concrete batch plant according to claim 3, which is characterized in that the stirring strut is waveform.

5. a kind of concrete batch plant according to claim 4, which is characterized in that the circular column be equipped with for The intake tunnel of water flowing in slideway.

6. a kind of concrete batch plant according to claim 5, which is characterized in that the discharging portion is discharge nozzle, and Discharge nozzle is located at the bottom of agitator.

7. a kind of concrete batch plant according to claim 6, which is characterized in that be connected on the clockwise and anticlockwise motor Frequency converter for being adjusted the speed to clockwise and anticlockwise motor.