CN109927179A - Environment-friendly type intermittent foam soil processing unit (plant) and processing method for highway infrastructures - Google Patents

Abstract

The invention discloses a kind of environment-friendly type intermittent foam soil processing unit (plant)s for highway infrastructures, which is characterized in that including pedestal；It is fixed at the two groups of powders addition mechanism on pedestal and being set side by side, every group of powder addition mechanism includes that at least one storage tank, feed inlet are arranged in the auger of storing pot bottom, and the weighing tank being correspondingly arranged with the discharge port of the auger；Rabbling mechanism, water add mechanism；Foaming agent adds mechanism, including foaming agent storage tank, foaming machine and the foaming agent delivery pipe being connected in the middle part of a mixing bowl；Auxiliary agent adds mechanism, including addition agent storage tank, and the other auxiliary agent adding tube being connected on the conveying water pipe.Realize that two groups of agitating paddles realize the preparation of final slurry to the stirring of powder and mixing, simultaneously, for auxiliary agent, such as the addition of flocculant, because its additive amount is small, the mode on injection conveying water pipe is directlyed adopt, while reducing the setting of a mixing bowl internal duct, it is diluted again using the accumulation water in conveying water pipe, improves its mixing uniformity.

Description

Environmentally friendly intermittent foamed soil processing device and processing for highway infrastructure method

technical field

The invention relates to the technical fields of road and bridge construction machinery and rapid building construction, in particular to an environment-friendly intermittent foamed soil processing device and a processing method for highway infrastructure.

Background technique

The bridge head jumping is the phenomenon of jumping when the vehicle passes due to the differential settlement or expansion joint damage at the highway bridge head and the expansion joint (bridge head approach), which causes the road surface to jump when the vehicle passes by. The degree of settlement fracture (the settlement value is generally 10-30cm, and some even exceed 60cm) will cause jumping and impact when the vehicle passes, thereby causing additional impact load on bridges, culverts and road surfaces, making drivers and passengers feel bumpy and uncomfortable, and even cause The vehicle is greatly decelerated, which can lead to serious traffic accidents (especially vehicle mechanical accidents). Therefore, the problem of car jumping at the bridge head has become an important factor affecting the engineering quality and cost of high-grade highways. The problem of vehicle jumping at the bridge head has always been one of the difficult problems that plagued municipal management engineering and technical personnel. Solving the problem of vehicle jumping at the bridgehead is an important task of the municipal facility management department

The main causes of the bridge head jumping are uneven settlement, sudden change in stiffness, and the anti-vibration performance of the vehicle speed and the vehicle itself. As far as urban road conditions are concerned, it is mainly caused by uneven settlement of the connection between flexible roads and rigid structures, resulting in misalignment. There are differences in the composition materials, stiffness, strength, expansion and contraction of bridges, subgrades, and pavements, and concentrated stress is easy to form when the bridge head is stressed. Under the action of vehicle load, structural weight, and natural factors, the bridge and the road will settle at the same time, but the settlement of the two is very different. The settlement of the road is much larger than that of the bridge, resulting in a misaligned platform, which leads to the occurrence of bridge head when driving. Jump.

CN105000845 discloses a lightweight foamed soil applied to backfilling of abutment backs, comprising cement, mixed materials, water, conditioner, foaming agent, microfoaming agent, and waterproofing agent; and also provides a kind of lightweight foamed soil applied to backfilling of abutment backs The preparation method of the lightweight foamed soil according to the invention, the microfoam is made into foam by a plunger pump and an air compressor, the material is mixed and stirred by a mixer, and the frequency converter controls the speed of the pumping to control the bulk density of the final product; also provides A field construction method of light foam soil applied to backfilling of abutment back is provided. The light foam soil of the invention is a light material, and after filling, the load on the foundation is small, the treatment strength of the foundation is greatly reduced, and the construction period of the foundation treatment is saved. The lightweight foamed soil has good fluidity after pouring and before initial setting, and the filling is self-compacting, which can avoid the defect of incomplete filling of conventional fillers.

However, the existing foamed soil generating equipment has complex structure, is not easy to move, and has low efficiency, resulting in high production cost, and the existing mixing produces many small lumps, which directly affects the performance of the product.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an environmentally friendly intermittent foamed soil processing device in view of the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of the present invention is:

An environmentally friendly intermittent foamed soil processing device for highway infrastructure, characterized in that it includes:

pedestal;

Two groups of powder adding mechanisms are fixedly arranged on the base frame and are arranged side by side, each group of powder adding mechanisms includes at least one storage tank, an auger with a feeding port arranged at the bottom of the storage tank, and an auger with the The weighing tank corresponding to the discharge port of the dragon;

The stirring mechanism includes a stirring cylinder correspondingly fixed on the base frame and arranged under the weighing tank and two groups of stirring paddles arranged in the stirring cylinder. The upper part of the cross section of the stirring cylinder is square, and the lower part is two parallel The semicircles arranged tangentially, the stirring paddles are correspondingly arranged at the center of the semicircles, and each group of semicircles corresponds to a weighing tank;

The water adding mechanism includes a water delivery pipe connecting the water source and the mixing cylinder, and two water distribution pipes extending axially on both sides of the top of the mixing cylinder and having openings formed thereon;

A foaming agent adding mechanism, including a foaming agent storage tank, a foaming machine, and a foaming agent conveying pipe connected to the middle of the mixing cylinder;

The auxiliary agent adding mechanism includes an auxiliary agent storage tank and an auxiliary agent addition pipe which is bypassed to the said conveying water pipe.

The base frame is a vehicle frame.

The stirring paddle comprises a stirring shaft and a central stirring blade and a peripheral stirring blade that are fixedly connected to the stirring shaft respectively. The propulsion directions of the central stirring blade and the peripheral stirring blade are opposite, and the stirring directions of the two groups of stirring paddles are the same. .

There are multiple storage tanks, the auger includes a first auger arranged at the bottom of the multiple stirring tanks, a second auger whose inlet is corresponding to the outlet of the first auger, and the The first auger is provided with a plurality of feeding ports corresponding to the stirring tank, the second auger is vertically arranged to lift the powder to the storage tank, and the first auger is The outlet and the inlet of the second auger have a closed silo.

The second auger includes a feeding cylinder, an inner cylinder centrally arranged in the feeding cylinder and driven by a motor through a belt, an inner propeller blade arranged in the inner cylinder, and an inner cylinder arranged between the inner cylinder and the feeding cylinder. outer propeller blades.

The openings are elongated and the water outlet direction is toward the side wall of the mixing cylinder so that water flows down the wall.

The conveying water pipe is provided with a sinking and bending section, and the auxiliary agent adding pipe is bypassed to the front end of the sinking and bending section.

It also includes a filter and dust removal mechanism detachably arranged on the top of the storage tank, the weighing tank and the mixing cylinder. The filter and dust removal mechanism includes an outer cylinder, an inner carrier plate arranged on the inner top of the outer barrel, and fixedly arranged at the lower part of the inner carrier plate. filter bag, and a pneumatic or electric vibration mechanism set above the inner carrier plate.

A processing method using the foamed soil processing device, comprising the following steps,

1) Start the material adding mechanism and put the set amount of powder in the weighing tank correspondingly,

2) adding the first powder material to the mixing tank and stirring;

3) After stirring for a predetermined time, add the second powder into the mixing cylinder until all the powders are added,

4) The auxiliary agent adding mechanism adds the auxiliary agent into the conveying water pipe;

5) start the water adding mechanism and the foaming agent adding mechanism to add a predetermined amount of water and foaming agent into the mixing cylinder and stir,

6) Discharge the slurry after stirring evenly.

The first powder material is cement, the second powder material is fly ash, and the weight ratio of the cement and the fly ash is 1-19.

Compared with the prior art, the beneficial effects of the present invention are:

The frame of the present invention can be a semi-trailer frame, etc. The whole device is arranged on the frame, which greatly improves its mobility, and can be put into use only by simple waterway connection, reducing the operation cost in the early stage and the later stage. The powder adding mechanism can realize the powder supply of one or two or even multiple powders. The combination of the auger and the weighing tank can realize the weighing and adding of the powder of the predetermined component and the predetermined weight, so as to realize the addition of the powder. Quantitatively added, the stirring mechanism adopts the structure of upper and lower circles to reduce the accumulation of materials at the bottom of the mixing tank. Water is added from both sides of the top of the mixing tank and directly sprayed on the inner wall. The stirring blade is used to drive the powder to infiltrate the water and reduce the amount of water. The powder directly falls on the powder into agglomerates, which realizes the stirring and mixing of the powder by the two groups of stirring paddles to achieve the preparation of the final slurry. The method of injecting into the conveying water pipe reduces the piping arrangement inside the mixing tank, and at the same time, it is diluted again with the accumulated water in the conveying water pipe to improve the mixing uniformity.

Description of drawings

Fig. 1 shows the side view structure schematic diagram of the environment-friendly intermittent foamed soil processing device of the present invention;

Fig. 2 shows the top view shown in Fig. 1;

Figure 3 shows the side view shown in Figure 1;

Figure 4 shows a schematic structural diagram of the second auger;

Figure 5 shows a schematic structural diagram of a stirring mechanism;

Figure 6 shows a schematic diagram of the liquid adding mechanism.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

As shown in the figure, an environmentally friendly intermittent foamed soil processing device of the present invention includes,

The base frame 1, such as the frame, includes the frame body,

Two groups of powder adding mechanisms are fixedly arranged on the frame body and are arranged side by side, each group of powder adding mechanisms includes at least one storage tank 2, an auger with a feeding port arranged at the bottom of the storage tank, and A weighing tank 3 is set correspondingly to the discharge port of the auger; the weighing tank includes a weighing tank body and a bracket fixedly connected with the frame body, and the weighing tank body is arranged on the bracket And a pressure sensor is set between the two to realize the measurement of the weight of the content.

The stirring mechanism 4 includes a stirring cylinder 41 correspondingly fixed on the frame body and arranged below the weighing tank and two groups of stirring paddles 42 arranged in the stirring cylinder. The upper part of the cross section of the stirring cylinder is square, and the lower part is For two semicircles arranged side by side and tangentially, the stirring paddles are correspondingly arranged at the center of the semicircles;

The water adding mechanism includes a water delivery pipe 45 that communicates with the water source and the mixing cylinder, and two water distribution pipes 43 extending axially on both sides of the top of the mixing cylinder and having openings formed thereon; the openings are long strips shape and the water outlet direction is towards the side wall of the mixing tank to make the water flow down along the wall;

The foaming agent adding mechanism includes a foaming agent storage tank, a foaming machine, and a foaming agent conveying pipe 44 connected to the middle of the stirring cylinder; the foaming agent storage tank is set on the gravity sensing device, and the foaming agent The feed pump is controllably connected to the gravity sensing device to achieve quantitative supply,

The auxiliary agent adding mechanism includes an auxiliary agent storage tank 5 and an auxiliary agent addition pipe 51 connected to the said conveying water pipe. The auxiliary agent can be a liquid flocculant, etc., or other liquid mixtures.

The frame of the present invention can be a semi-trailer frame, etc. The whole device is arranged on the frame, which greatly improves its mobility, and can be put into use only by simple waterway connection, reducing the operation cost in the early stage and the later stage. The powder adding mechanism can realize the powder supply of one or two or even multiple powders. The combination of the auger and the weighing tank can realize the weighing and adding of the powder of the predetermined component and the predetermined weight, so as to realize the addition of the powder. Quantitatively added, the stirring mechanism adopts the structure of upper and lower circles to reduce the accumulation of materials at the bottom of the mixing tank. Water is added from both sides of the top of the mixing tank and directly sprayed on the inner wall. The stirring blade is used to drive the powder to infiltrate the water and reduce the amount of water. The powder directly falls on the powder into agglomerates, which realizes the stirring and mixing of the powder by the two groups of stirring paddles to achieve the preparation of the final slurry. The method of injecting into the conveying water pipe reduces the piping arrangement inside the mixing tank, and at the same time, it is diluted again with the accumulated water in the conveying water pipe to improve the mixing uniformity.

Further, the stirring paddle comprises a stirring shaft and a central stirring blade and a peripheral stirring blade that are fixedly connected to the stirring shaft respectively, and the propulsion directions of the central stirring blade and the peripheral stirring blade are opposite, and the two groups of stirring paddles have opposite directions. Stir in the same direction. The two stirring paddles are arranged in parallel and spaced apart in a semi-circular section. Each set of stirring paddles is pushed along the axial direction to realize mixing, and the materials between the two sets of stirring paddles interact to achieve the final overall mixing.

Two sets of stirring paddles are used and the function of actively pushing and pulling materials is set in the axial direction to complete the multi-directional mixing of materials, especially when two materials are mixed, such as when mixing fly ash and cement, fly ash can be used to mix water. After the cement is broken, the small group is reduced and the final product quality is improved.

Wherein, there are multiple storage tanks, such as three, and the auger includes a first auger 6 arranged at the bottom of the plurality of stirring tanks, and the inlet is corresponding to the outlet of the first auger. The second auger 7, the first auger is provided with a plurality of feeding ports corresponding to the stirring tank, and the second auger is vertically arranged to lift the powder to the storage tank, so the The outlet of the first auger described above and the inlet of the second auger have a closed feed bin 72. Through the cooperation of the auger and the mixing tank, one auger can intermittently convey and weigh various types of powder. , simplifies the overall structure, uses the silo to connect the two augers, and the two augers work together to achieve long-distance transportation and lifting of powdery materials. The second auger includes a feeding cylinder 71, an inner cylinder 73 centrally arranged in the feeding cylinder and driven by a motor through a belt, an inner propeller blade 74 arranged in the inner cylinder, and an inner cylinder 74 arranged in the inner cylinder. The outer propeller blade 75 between the barrel and the feeding barrel is provided with a discharge pipe 76 at the top of the feeding barrel. Two sets of lifts are used, and two material lifting channels are used inside and outside. While ensuring the lifting speed, a large number of pumps are effectively realized. In addition, the second auger is driven by a belt, which can avoid burnout caused by excessive load when starting and restarting. At the same time, the design of two-stage auger in series is adopted, and the material is conveyed in a closed pipeline to reduce environmental pollution.

As another specific embodiment, the second Jiaolong can also adopt the design of a single propeller blade. In this embodiment, the design concept of the vertical cement conveyor is, the large ω speed, the friction angle between the super material blades and the super material rest angle , The friction angle refers to the angle between the helical surface and the axial direction of the screw shaft, and the angle of repose is the characteristic formed by the helix angle of the material and the blade. , the repose angle is also determined, the angle is much larger than the national design standard, generally the increase angle and the decrease angle are about 10%, while the increase in the present invention is 30-50%, and even the increase angle exceeds 50%, It is doubled, the design lead is 1/3 larger than that of the country, the speed is 3 times higher and nearly four times the ultra-high speed. The national design speed is 35-90r/m, ours is 380r/m. 1 cubic minute per minute, the inner diameter of the feeding cylinder is 425mm, the friction angle between the material blades is 15-16°, such as 15.4°; the inner cylinder diameter is 133mm, the diameter of the spiral blade is 405mm, the height is 3.5m, and the spiral lead is 350mm.

At the same time, the water conveying pipe is provided with a sinking bending section 46, the auxiliary agent adding pipe 51 is bypassed to the front end of the sinking bending section, and the conveying water pipe is arranged at the bottom of the frame body or between the vehicle frames. It cooperates with the injection end to form the sinking and bending section in the middle. The sinking section is set to optimize the utilization of the upper space of the frame. The opening of the mixing tank and the internal pipeline arrangement.

As a preferred solution, it also includes a filter and dust removal mechanism 8 that is detachably arranged on the top of the storage tank, the weighing tank and the stirring cylinder. The filter bag at the lower part of the inner carrier plate and the pneumatic or electric vibration mechanism arranged above the inner carrier plate are also provided with a primary filter screen, 40-60 mesh, at the bottom of the outer cylinder. The filter mechanism is used to supplement and supply the powder in the storage tank and reduce external air pollution, while the detachable structure is used to reduce the overall height and facilitate the passage of bridges during road transportation.

The invention also discloses a foamed cement processing method, comprising the following steps:

1) Start the material adding mechanism and store the set amount of powder in the weighing tank,

2) Add the first powder, such as cement, into the mixing tank and stir;

3) After stirring for a predetermined time, add the second powder, such as fly ash, into the mixing tank until all the powders are added, that is, through the cooperation of the first Jiaolong and the corresponding storage tank, the order of various powders can be realized. Quantitative addition, that is, mixing of dry materials first,

4) The auxiliary agent adding mechanism adds the auxiliary agent into the conveying water pipe;

5) Start the water adding mechanism and the foaming agent adding mechanism to add a predetermined amount of water and foaming agent into the mixing tank and stir, wherein, water is added first, and after the powder is added with water and stirred into a slurry, the remaining water and foam are added. Foaming agent is added; of course, after all the water is added and stirred into a slurry, the foaming agent can also be added. The foaming agent is injected directly from the middle of the top of the mixing tank with a large diameter, and the bubbles are less likely to rupture due to transmission. , improve the quality of the final product.

6) After stirring evenly, the slurry is discharged from the bottom of the stirring rod or the side bottom.

The foamed cement processing method of the present invention has simple control. The powder materials are sequentially and quantitatively added, the dry powder materials are mixed firstly, and then the mixed powder materials are stirred and dipped into wet contact with water, and the foaming agent is added after the powder materials are slurried. Reduce the stirring time of foaming, avoid foam breakage, and improve the overall product quality.

The above are only the preferred embodiments of the present invention. It should be noted that, for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and Retouching should also be considered within the scope of protection of the present invention.

Claims (10)

1. a kind of environment-friendly type intermittent foam soil processing unit (plant) for highway infrastructures, which is characterized in that including,

Pedestal；

It is fixed at the two groups of powders addition mechanism on pedestal and being set side by side, every group of powder addition mechanism includes at least one A storage tank, feed inlet are arranged in the auger of storing pot bottom, and the weighing being correspondingly arranged with the discharge port of the auger Tank；

Rabbling mechanism including the corresponding a mixing bowl for being fixed on pedestal and being arranged in below weighing tank and is arranged in a mixing bowl Two groups of agitating paddles, the top of the cross section of a mixing bowl be it is rectangular, lower part is the semicircle of two tangent settings arranged side by side, described Agitating paddle be arranged in correspondence with the center point in semicircle, every group of semicircle is corresponding with a weighing tank；

Water adds mechanism, and conveying water pipe and two including being connected to water source and a mixing bowl are arranged in axially extending to be stirred Cylinder top two sides and the water distributor for being formed with aperture thereon；

Foaming agent adds mechanism, including foaming agent storage tank, foaming machine and the foaming agent delivery pipe being connected in the middle part of a mixing bowl；

Auxiliary agent adds mechanism, including addition agent storage tank, and the other auxiliary agent adding tube being connected on the conveying water pipe.

2. environment-friendly type intermittent foam soil processing unit (plant) as described in claim 1, which is characterized in that the pedestal is vehicle Frame.

3. environment-friendly type intermittent foam soil processing unit (plant) as described in claim 1, which is characterized in that the agitating paddle includes Agitating shaft and the center paddle being fixedly connected respectively with the agitating shaft and peripheral paddle, the center paddle and The direction of propulsion of peripheral paddle is on the contrary, the mixing direction of two groups of agitating paddles is identical.

4. environment-friendly type intermittent foam soil processing unit (plant) as described in claim 1, which is characterized in that the storage tank is more A, the auger includes the first auger that multiple stirring pot bottoms are arranged in, the outlet pair of import and first auger The second auger that should be arranged, first auger is provided with multiple feed inlets corresponding with the agitator tank respectively, described The second auger be vertically arranged so that powder is promoted to storage tank, the outlet of first auger and the import of the second auger have It is closed to cross feed bin.

5. environment-friendly type intermittent foam soil processing unit (plant) as described in claim 1, which is characterized in that the second auger packet Include feeder, be centrally positioned in the inner cylinder being driven in feeder and by motor by belt, be arranged in the inner cylinder in Propeller blade, and the external spiral paddle being arranged between inner cylinder and feeder.

6. environment-friendly type intermittent foam soil processing unit (plant) as described in claim 1, which is characterized in that the aperture is strip Shape and water discharging direction is towards a mixing bowl side wall so that water is flowed down along wall.

7. environment-friendly type intermittent foam soil processing unit (plant) as described in claim 1, which is characterized in that the conveying water pipe is set It is equipped with sinking bending section, the sinking bending section front end is connected to by the auxiliary agent adding tube.

8. environment-friendly type intermittent foam soil processing unit (plant) as described in claim 1, which is characterized in that further include removably setting The dust removal by filtration mechanism at the top of storage tank, weighing tank and a mixing bowl is set, the dust removal by filtration mechanism includes outer cylinder, and setting exists The interior support plate of outer cylinder inner top, is fixed at the filter cloth bag of interior support plate lower part, and is arranged in pneumatic above interior support plate Or electric vibrator mechanism.

9. a kind of processing method using the described in any item foam soil processing unit (plant)s of claim 1-8, which is characterized in that including Following steps,

1) starting material addition mechanism and the corresponding powder for launching set amount in the weighing tank,

2) a mixing bowl is added in the first powder and stirred；

3) it will be finished in the second powder addition a mixing bowl up to whole powders add after stirring the predetermined time,

4) conveying water pipe is added in auxiliary agent by auxiliary agent addition mechanism；

5) starting water addition mechanism and foaming agent addition mechanism to be to be added a mixing bowl for the water of predetermined amount and foaming agent and stir,

6) slurry is discharged after mixing evenly.

10. foam soil processing method as claimed in claim 9, which is characterized in that first powder is cement, described Second powder is flyash, and the weight ratio of the cement and flyash is in 1-19.