CN108015895A - A kind of concrete batch plant - Google Patents

Abstract

The present invention relates to the technical field of agitators running around a horizontal or substantially horizontal axis, in particular to a concrete mixing equipment, which includes a forward and reverse motor, a support frame, a stirring shaft and a mixing bucket; the mixing bucket is provided with a discharge part; It includes a ring-shaped rotating part, which is rotatably connected to the upper end of the mixing tank, 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 helical teeth; the inner wall of the lower part of the opening is an arc surface; the stirring shaft There is a support rod on the top, and 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 wall of the mixing tank The inner rotation is connected with the ring column, and the upper end of the ring column forms a curl outward and is fixedly connected with the arc surface; the rotation part is provided with a water inlet part. This scheme can not only allow water to enter evenly, but also prevent concrete from overflowing and falling to the ground during the mixing process.

Description

A kind of concrete mixing equipment

technical field

The invention relates to the technical field of mixers operating around a horizontal or substantially horizontal axis, 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 storing concrete. During the working process 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.

Existing agitator is a kind of shaft that has blade to rotate in cylinder or groove, and multiple raw materials are stirred and mixed, making it a kind of machine of mixture. Building houses and farmland infrastructure need to use a mixer to mix concrete. People often use a mixer. This mixer includes a mixing bucket on the frame. The upper end of the mixing bucket is open, and the bottom is provided with a discharge port with a cover. There are multiple stirring rods with stirring blades on the bottom of the mixing tank. The upper part of the stirring rods is fixedly connected to the stirring shaft located in the middle of the mixing tank. The stirring shaft extends out of the bottom of the mixing tank 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 the faucet, and the other end of the water pipe is directly placed in the mixer for adding water.

There are the following technical problems in the prior art: 1. When adding water to the mixer, the water pipe is directly placed in the mixing tank to add water. Due to the large amount of water added, and the amount of water added will affect the viscosity of the later concrete; The aggregate and cement in direct contact with the water in the water pipe will be soaked by water first, while the untouched part on the other side will still be dry; water cannot be evenly immersed into the mixing tank from all around, which will affect the efficiency of mixing; 2. Stirring In the process of mixing, there are often phenomena such as aggregate or cement overflowing, that is, the aggregate or cement is easy to overflow from the upper end of the mixing bucket during the mixing process and fall to the ground; and the concrete will form a hard solid after drying, which is not easy 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 too quickly, it will affect the quality of the concrete; Congealing occurs.

Contents of the invention

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

In order to achieve the above object, the basic scheme of the present invention is as follows:

A concrete mixing equipment, comprising a forward and reverse motor, a support frame, a mixing bucket with an upper end opening, and a stirring shaft driven by the forward and reverse motor; the mixing bucket is fixedly connected to the support frame; the forward and reverse motor is located at the bottom of the mixing bucket; The mixing barrel is provided with a discharge part for discharging; it also includes an annular rotating part, which is rotatably connected to the upper end of the mixing barrel, and the rotating part is provided with an opening connected with the mixing barrel, and the diameter of the opening is larger than that of the stirring barrel. The barrel diameter of the barrel; the inner wall of the upper part of the opening is provided with a circle of retaining ring and a circle of helical teeth, and the helical teeth are located above the retaining 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 that of the mixing barrel The mouth of the barrel; the stirring shaft is provided with a support rod, and 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 One side of the side; 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 matches the arc-shaped surface; There is a circular column connected by rotation, the upper end of the annular column extends to the upper end of the mixing bucket and forms a curling outward toward the arc surface, and the curling is fixedly connected with the arc surface; the inner wall of the mixing bucket is provided with a circle and a rotating There is a slideway connected to the cavity, and a fixed rod is slidably connected in the slideway. One end of the fixed rod is fixedly connected with the lower end of the ring column, and the other end of the fixed rod is fixedly connected with a scraping strip for scraping the inner wall of the mixing tank; In the water inlet part that passes water into the opening.

The beneficial effects of this program are:

1. In this scheme, water enters the opening through the water inlet. Since the inner wall of the lower part of the opening is a curved surface, and the position of the curved surface is lower than the mouth of the mixing bucket, the water will first The lower part of the opening is filled, and then slowly overflows from the opening, and flows into the mixing bucket along the wall of the mixing bucket; thus realizing the uniform addition of water to the mixing bucket from all around, and then from the inner wall of the mixing bucket Cement and aggregates are slowly immersed into the middle part; coupled with the stirring shaft, the cement and aggregates in the mixing bucket are being stirred, and then the concrete is gradually formed.

2. This scheme uses a forward and reverse motor to drive the stirring shaft; there are the following two movement processes:

When the forward and reverse motor is rotating, the stirring shaft drives the support rod to rotate. At this time, the pawl will contact with the helical teeth and rotate under the action of the helical teeth; When overflowing, cement or aggregate will fall into the arc surface of 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 in contact with the arc surface The matching arc bar, so the arc bar will push the cement or aggregate on the arc surface during the rotation process, so that the cement or aggregate will return to the mixing bucket. In addition, since water will enter the mixing tank during the mixing process, part of the cement or aggregate overflowing to the curved surface of the lower part of the opening will return to the mixing tank with the water flow; in summary, this scheme 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. The end of the shaft will resist the helical teeth and then drive the rotating part to rotate; when the rotating part rotates, it will drive the ring column fixedly connected with the arc surface to rotate, the ring part will drive the fixed rod to rotate, and the fixed rod will drive the scraping bar to the inner wall of the mixing bucket Scratching; furthermore, not only the stirring shaft is stirring the concrete, but also the scraping bar is scraping the inner wall of the mixing bucket, which also realizes the mixing of the concrete; if it is necessary to take the material at this time, open the discharge part, The concrete is gradually discharged from the discharge part, and the setting of the scraping strip 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 tank from contacting the helical teeth.

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

It is very simple to add water to the mixing tank; when in use, just connect the water pipe connected to the faucet to the water inlet pipe directly.

The preferred option 2: As a further optimization of the preferred option 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.

The third preferred option: As a further optimization of the second preferred option, the stirring rod is wavy. It further facilitates the mixing of cement and aggregate to form concrete.

Optimum option 4: As a further optimization of preferred option 3, the ring column is provided with a water inlet channel for passing water into the slideway.

Water can enter the slideway through the water inlet channel, and then enter the mixing bucket; not only is it convenient to add water to the middle of the mixing bucket; but also the slideway can be cleaned when the mixing bucket is cleaned later.

Preferred option 5: As a further optimization of preferred option 4, the discharge part is a discharge pipe, and the discharge pipe is located at the bottom of the mixing tank. It is very simple to realize the discharge of concrete in the mixing tank.

Optimum Scheme 6: As a further optimization of Optimal Scheme 5, a frequency converter for speed regulation of the forward and reverse motor is connected to the forward and reverse motor.

In the prior art, the speed of concrete mixing is relatively fast, and after the concrete mixing is completed, if the original speed is still used for mixing, it is easy to cause the concrete to be over-mixed and affect the quality of the concrete; however, if the concrete is not mixed, it will cause the concrete to solidify .

This scheme uses frequency converters to realize the speed regulation of the forward and reverse motors; when the concrete mixing is completed, the forward and reverse motors rotate in the opposite direction to the original rotation, and the frequency converter is started at this time, thereby reducing the speed of the forward and reverse motors; It can achieve low-speed mixing of concrete; and during the mixing process, the scraping bar can also 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 kind of concrete mixing equipment of the present invention;

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

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

Detailed ways

The present invention will be described in further detail below by means of specific embodiments:

The reference numerals in the accompanying drawings 1, 2 and 3 of the description include: forward and reverse motor 1, stirring shaft 11, main shaft 111, stirring rod 112, support frame 2, mixing barrel 3, discharge pipe 31, ring column 32. Curling 321, water inlet channel 322, slideway 33, fixed 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 Fig. 1, Fig. 2 and Fig. 3, in order to achieve the above object, the basic scheme of the present invention is as follows:

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

The rotating part 4 is provided with an opening 41 communicating with the mixing bucket 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 bucket 3 are located on the same vertical axis. The diameter of the opening 41 is larger than the diameter of the mixing bucket 3, so that the rotating part 4 covers the upper end of the mixing bucket 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 that the rotating part 4 can rotate freely, the lower end of the rotating part 4 is provided with an annular protrusion, and the outer wall of the mixing bucket 3 is provided with a circle of annular groove, and the annular protrusion is slidably connected with the side wall of the annular groove.

The inner wall of the top of the opening 41 is provided with a circle of retaining ring 42 and a circle of helical teeth 43, and the helical teeth 43 are made of inclined plates inclined to the right. The circle of helical teeth 43 is located above the retaining ring 42, and the position of the arc-shaped surface 411 is lower than the mouth of the mixing bucket 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 Figure 3, the upper part of the friction part 51 is hinged with a ratchet 511 and a limiting block 512 for limiting the ratchet 511; the limiting block 512 is located on the left side of the ratchet 511; 43 contacts, and the pawl 511 can drive the rotating part 4 to rotate; the lower part of the friction part 51 is an arc-shaped bar 513 that matches the arc-shaped surface 411; Annular column 32 is arranged, and the upper end of annular column 32 stretches to the upper end of mixing bucket 3 and outwardly forms crimp 321 toward the direction of arcuate surface 411, and this crimping 321 is fixedly connected with arcuate surface 411; There is a slideway 33 connected with the rotating cavity on the top, 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 ring column 32, and the other end of the fixed rod 331 is fixedly connected with a The scraping bar 332 on the inner wall of the mixing bucket 3; the water inlet part for passing water into the opening 41 is provided on the rotating part 4. 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 wave-shaped. It further facilitates the mixing of cement and aggregate to form concrete. The ring column 32 is provided with a water inlet channel 322 for passing water into the slideway 33 .

During use, connect the water tap and the water inlet pipe 44 through a connecting pipe, then open the water inlet pipe 44; because the inner wall of the bottom of the opening 41 is an arc surface 411, and the position of the arc surface 411 is lower than that of the mixing bucket 3 bucket mouth, so the water will first fill the lower part of the opening 41, then slowly overflow from the opening 41, and flow into the mixing bucket 3 along the wall of the mixing bucket 3; Add in the mixing tank 3, then slowly immerse the cement and aggregate at the inner wall of the mixing tank 3 into the middle part. Simultaneously start the forward and reverse motor 1. 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 . Simultaneously, the stirring shaft 11 drives the support rod 5 to rotate, and at this moment, the ratchet 511 will contact the helical teeth 43, and swing to the left under the stirring of the helical teeth 43; When the mouth of the barrel overflows, cement or aggregate will fall into the arc-shaped surface 411 of the bottom of the opening 41; since the stirring shaft 11 will drive the support rod 5 to rotate, so 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 bar 513 matched with the arc-shaped surface 411, so the arc-shaped bar 513 will push the cement or aggregate on the arc-shaped surface 411 during the rotation, so that the cement or aggregate will return to the mixing tank 3 Inside. In addition, since water will enter the mixing bucket 3 during the mixing process, part of the cement or aggregate that overflows onto the arc-shaped surface 411 at the bottom of the opening 41 will also return to the mixing bucket 3 with the water flow. When the amount of water in the mixing tank 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 motor 1 rotates counterclockwise, and at the same time, the frequency converter 6 is turned on, and the frequency converter 6 makes the forward and reverse motor 1 decelerate. The stirring shaft 11 drives the ratchet 511 to rotate. At this time, the ratchet 511 will be limited by the limit block 512, and the ratchet 511 will no longer be free to rotate, and the end of the ratchet 511 will be against the helical tooth 43 to drive the rotating part 4 Rotate; when the rotating part 4 rotates, it will drive the ring column 32 fixedly connected with the arc surface 411 to rotate, the ring 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 tank 3; And then realize that not only the stirring 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 stirring of the concrete; if it is necessary to take material at this time, open the discharge pipe 31, The concrete is gradually discharged from the discharge pipe 31 , and the setting of the scraping bar 332 can prevent the concrete from remaining on the inner wall of the mixing tank 3 . In the process of counterclockwise rotation, this solution reduces the speed of the forward and reverse motor 1. Although the speed is reduced, the scraping bar 332 can continuously scrape the inner wall of the mixing tank 3 to prevent concrete from sticking to the inner wall; At this point, the discharge pipe 31 can be opened at any time for discharging.

The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the schemes are not described here too much. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, several modifications and improvements can also be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (7)

1. a kind of concrete batch plant, including the agitator of clockwise and anticlockwise motor, supporting rack, upper end opening and by clockwise and anticlockwise motor The agitating shaft of drive；The agitator is fixedly connected on supporting rack；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, the rotation section of annular is further included, the rotation section rotation connection In the upper end of agitator, rotation section is equipped with the opening connected with agitator, and open diameter is more than the bucket footpath 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 less than the bung hole of agitator；The agitating shaft is equipped with supporting rod, and the end of supporting rod is equipped with Friction portion, the upper articulation in the friction portion have pawl and for carrying out spacing limited block 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 that the arcwall face coordinates；A circle is equipped with the bucket wall of the agitator and rotates chamber, the rotation intracavitary rotation connection 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 with rotating 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 to be useful for scraping agitator inner wall, scrapes rub piece；The rotation section be equipped be used for into opening water flowing into Water portion.

A kind of 2. concrete batch plant according to claim 1, it is characterised in that the water entering section is water inlet pipe, and Water inlet pipe is connected with open lower part.

3. a kind of concrete batch plant according to claim 2, it is characterised 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, it is characterised in that the stirring strut is waveform.

A kind of 5. concrete batch plant according to claim 4, it is characterised in that the circular column be equipped be used for The intake tunnel of water flowing in slideway.

A kind of 6. concrete batch plant according to claim 5, it is characterised 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, it is characterised in that be connected with the clockwise and anticlockwise motor For carrying out the frequency converter of speed governing to clockwise and anticlockwise motor.