CN220638440U - Heat preservation system for mixing plant - Google Patents

Abstract

The utility model provides a heat preservation system for a stirring station, which comprises a feeding area, wherein the feeding area comprises a feeding bin with an opening and a top cover arranged at the opening of the feeding bin, and a first heat preservation layer for heat preservation of the feeding bin is arranged on the outer surface of the feeding bin; the conveying area is arranged at the side part of the upper bin and extends into the upper bin, the conveying area is provided with a conveying bin, and a second heat preservation layer is arranged on the conveying bin; the water storage area is internally provided with a water storage tank, and the outer side of the water storage tank is provided with a heat preservation structure; the stirring zone is internally provided with a stirring station in the closed environment, the transportation zone and the water storage zone are respectively connected with the stirring station, and the stirring zone is connected with a first heating unit for heating in the stirring zone; the second heating unit is used for heating materials in the stirring station and is connected with the first heating unit.

Description

Heat preservation system for mixing plant

Technical Field

The utility model relates to the technical field of stirring in concrete mixing, in particular to a heat preservation system for a stirring station.

Background

When the temperature is low, corresponding protective measures are needed in the links of mixing, supplying, transporting, pouring, maintaining and the like of the concrete, and the protective measures are mainly the link of concrete supply, so that the conventional heat preservation measures of the mixing plant can not meet the requirements of a construction site, the temperature of an outlet machine can not be controlled, the quality of the concrete can not be guaranteed, and the winter cold-proof and heat preservation work of the mixing plant is particularly important.

In severe cold areas, for concrete paper cups, due to the temperature problem, good paper cups cannot be realized, the discharging temperature of concrete is difficult to ensure, and the use of raw materials is affected.

Disclosure of Invention

The utility model aims to provide a heat preservation system for a stirring station, which ensures the temperature assurance in each environment and realizes effective production by arranging heat preservation structures in each key area.

In order to achieve the technical effects, the utility model is realized by the following technical scheme.

A heat preservation system for a stirring station comprises,

the feeding area comprises a feeding bin with an opening and a top cover arranged at the opening of the feeding bin, and a first heat preservation layer for heat preservation of the feeding bin is arranged on the outer surface of the feeding bin;

the conveying area is arranged at the side part of the upper bin and extends into the upper bin, the conveying area is provided with a conveying bin, and a second heat preservation layer is arranged on the conveying bin;

the water storage area is internally provided with a water storage tank, and the outer side of the water storage tank is provided with a heat preservation structure;

the stirring zone is internally provided with a stirring station in the closed environment, the transportation zone and the water storage zone are respectively connected with the stirring station, and the stirring zone is connected with a first heating unit for heating in the stirring zone;

the second heating unit is used for heating materials in the stirring station and is connected with the first heating unit.

In this technical scheme, in raw materials and retaining district, before mixing, the raw materials is carried out the intensification alone and is kept warm, avoids solidifying such as at material loading district and retaining district and transportation district, can ensure follow-up stirring mix etc. smoothly.

In this technical scheme, the stirring district sets up the heating alone, in the large-scale dock of severe cold district or the large-scale, massive structure winter concrete construction of severe cold district, can realize the mixing of concrete, even under the severe cold environment, also can guarantee going on smoothly of construction, reduced the time limit for a project.

In the technical scheme, the two heating units are connected, recycling among the heating units can be realized by selecting different heating units, the cost is saved, and under the same construction period condition, the economic benefit brought by the totally-enclosed heating system of the stirring station is mainly represented in various aspects such as the main machine of the stirring station for removing the frost, the aggregate feeding bin for removing the frost, the water flow pipeline for removing the frost, the reservoir for removing the frost, the mechanical equipment for removing the frost, the labor cost, the misoperation cost brought to the construction site by the chain reaction and the like.

As a further improvement of the utility model, the feeding bin comprises a bottom plate and a side plate arranged on the periphery of the bottom plate, and the side plate is provided with the first heat insulation layer.

In this technical scheme, increase first heat preservation on the curb plate, the material loading storehouse lateral part can obtain the heat preservation this moment, has realized the heat preservation in the material loading region, takes place to solidify and other problems in avoiding the material feeding, influences the mixture in later stage.

As a further improvement of the utility model, the cross section of the top cover is of a triangular structure, and the longest bottom edge of the triangular structure is close to the opening of the feeding area.

In this technical scheme, set up triangle-shaped's top cap, compare in other structures, when connecting, can be directly be connected to the hoist engine from triangle-shaped top, shorten hoist engine chain working distance, can obtain the effect that the time that the top cap opened and closed was reduced, realized the material loading and accomplished the back quick closed top cap, preserved the temperature in the material loading storehouse.

As a further improvement of the utility model, the heat-insulation system further comprises a transportation rail obliquely arranged along the transportation area, wherein the second heat-insulation layers are arranged on two sides of the transportation rail, and the second heat-insulation layers, the transportation rail body and a top plate at the top form a closed heat-insulation transportation bin.

In this technical scheme to the transportation track is the bottom, then increases the second heat preservation, forms the cavity, cooperates the roof, has guaranteed the independent heat preservation in the transportation region, avoids the material to be frozen scheduling problem by solidification in the transportation.

As a further improvement of the utility model, a third heat insulation layer is paved on a top plate at the top in the transportation bin.

In this technical scheme, in order to avoid external cold air etc. to get into the transportation storehouse, so set up the roof, the third heat preservation is laid to the roof simultaneously for the transportation storehouse is independent to be sealed, and external cold air and debris etc. are difficult for getting into.

The utility model further comprises a waste cleaning area arranged below the transportation area, wherein a thermal insulation transportation bin which is arranged in a suspended manner and is isolated from the waste cleaning area is formed above the waste cleaning area through a thermal insulation wall and a thermal insulation roof along the direction of a transportation track.

In this technical scheme, in order to save the cost, whether fully consider the scheduling problem that needs heating, keep apart waste material cleaning zone and transportation district storehouse specially, ensure to need thermal-insulated heat preservation, and can not need thermal-insulated waste material cleaning zone, not increase insulation structure.

As a further improvement of the utility model, the reservoir comprises a framework structure with a water filling port arranged along the working surface, and a fourth heat preservation layer is adhered to the outer surface of the framework structure.

In this technical scheme, utilize the approximately structure of skeleton texture formation cell body, then lay the heat preservation, make it form semi-closed structure, the heat preservation constitutes the lateral part simultaneously, can realize keeping warm, and skeleton texture removes easily and moves, and the later stage is convenient for form the cistern in other positions.

As a further improvement of the utility model, the utility model also comprises a fifth heat preservation layer arranged at the water filling port, wherein the fifth heat preservation layer is a polyphenyl sandwich plate.

In this technical scheme, in order to avoid the entering of cold air in cistern top, set up the second heat preservation, through the fifth heat preservation, can avoid water freezing to condense, unable scheduling problem that flows.

As a further improvement of the utility model, the second heating unit is a hot water pipeline, the first heating unit heats the radiator, and the hot water pipeline is connected with water supply of the radiator.

In the technical scheme, the hot water of the Jiang Di two heating units is used as a water source of the first heating unit, namely the hot water of the second heating unit, and flows to the first heating unit after the second heating unit is heated, so that the heating radiator in the first heating unit is heated, and the heating environment in the stirring area is realized.

As a further improvement of the utility model, the utility model further comprises a connecting pipeline for connecting the feeding area, the transportation area, the water storage area and the stirring area, wherein the connecting pipeline is wound with a heating wire, and a sixth heat preservation layer is adhered to the outer side of the heating wire.

In this technical scheme, increase the heater strip, when outside carries out transmission etc., can heat through the heater strip, and the heat preservation in the heating can be ensured to the sixth heat preservation, avoids causing waste etc. of heat and resource.

Drawings

Fig. 1 is a schematic structural diagram of a heat preservation system for a stirring station provided by the utility model;

FIG. 2 is a schematic view of the stirring zone according to the present utility model;

FIG. 3 is a schematic structural view of a feeding area provided by the present utility model;

FIG. 4 is a schematic view of a transportation area according to the present utility model;

FIG. 5 is a schematic view of a water storage area according to the present utility model;

FIG. 6 is a schematic structural view of a skeleton structure of a water storage area according to the present utility model;

FIG. 7 is a schematic diagram of a first heating unit and a second heating unit according to the present utility model;

FIG. 8 is a construction flow chart of a heat preservation system for a mixing plant provided by the utility model;

in the figure:

100. a feeding area; 110. feeding a bin; 111. a first heat-retaining layer; 112. a bottom plate; 113. a side plate; 120. a top cover; 200. a transport zone; 210. a transportation bin; 211. a second heat-insulating layer; 220. a transport rail; 230. a third heat-insulating layer; 300. a water storage area; 310. a reservoir; 320. a fourth heat-insulating layer; 330. a water filling port; 500. a thermal insulation structure; 600. a stirring zone; 610. a stirring station; 620. a first heating unit; 700. and a second heating unit.

Detailed Description

The present utility model will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present utility model, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present utility model by those skilled in the art.

In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "mounted," "connected," and "relatively fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.

Example 1

In this embodiment, a main structure of a heat preservation system for a mixing plant is mainly described, and referring to fig. 1, including,

the feeding area 100, wherein the feeding area 100 comprises a feeding bin 110 with an opening and a top cover 120 arranged at the opening of the feeding bin 110, and a first heat preservation layer 111 for preserving heat of the feeding bin 110 is arranged on the outer surface of the feeding bin 110;

the transportation area 200 is arranged at the side part of the upper bin 100 and extends into the upper bin 100, the transportation area 200 is provided with a transportation bin 210, and a second heat insulation layer 212 is arranged on the transportation bin 210;

a water storage area 300, wherein a water storage pool 310 is arranged in the water storage area 300, and a heat preservation structure 320 is arranged outside the water storage pool 310;

the stirring zone 600, a stirring station 610 is arranged in the stirring zone 600 of the closed environment, the transportation zone 200 and the water storage zone 300 are respectively connected with the stirring station 600, and the stirring zone 600 is connected with a first heating unit 620 for heating in the stirring zone 600;

and a second heating unit 700, wherein the second heating unit 700 is used for heating materials in the stirring station 610, and the second heating unit 700 is connected with the first heating unit 620.

In this embodiment, before mixing, the raw materials are heated and kept warm separately in the raw materials and the water storage area, so that solidification in the feeding area, the water storage area, the transport area and the like is avoided, and subsequent smooth stirring and mixing can be ensured.

In this embodiment, the stirring district sets up the heating alone, in the construction of the large-scale dock of severe cold district or the large-volume, the large-scale structure winter concrete of severe cold district, can realize the mixing of concrete, even under the severe cold environment, also can guarantee going on smoothly of construction, reduced the time limit for a project.

In this embodiment, two heating units are connected, and can realize recycle between the heating units through selecting different heating units, so that cost is saved, and under the same construction period condition, economic benefits brought by the totally-enclosed heating system of the mixing station are mainly represented in aspects of main machine freezing removal of the mixing station, aggregate feeding bin freezing removal, water flow pipeline freezing removal, reservoir freezing removal, mechanical equipment freezing removal, labor cost, misoperation cost brought to a construction site by chain reaction, and the like.

Example 2

In this embodiment, the heat preservation in feeding and transportation is mainly introduced.

Referring to fig. 3, the upper bin 110 includes a bottom plate 112 and a side plate 113 disposed on an outer periphery of the bottom plate 112, and the side plate 113 is provided with the first insulation layer 111.

In this embodiment, increase first heat preservation on the curb plate, the material loading storehouse lateral part can obtain the heat preservation this moment, has realized the heat preservation in the material loading region, takes place to solidify and other problems in avoiding the material feeding, influences the later stage and mixes.

Further, the cross section of the top cover 120 is a triangular structure, and the longest bottom edge of the triangular structure is close to the opening of the feeding area 100.

In this embodiment, set up triangle-shaped's top cap, be connected to the hoist engine from triangle-shaped top, shorten hoist engine chain working distance, can obtain the effect that the time of top cap opening and closing reduces, realized the material loading and accomplished the back and closed the top cap fast, preserved the temperature in the material loading storehouse.

Specifically, referring to fig. 4, in the transport area 200, a transport rail 220 is disposed obliquely along the transport area 200, two sides of the transport rail 220 are provided with the second heat insulation layer 211, and the second heat insulation layer 211 forms a closed heat insulation transport bin with the transport rail 220 body and the top plate at the top.

In this embodiment, use the transportation track as the bottom, then increase the second heat preservation, form the cavity, cooperate the roof, guaranteed the independent heat preservation in the transportation region, avoid the material to be frozen scheduling problem by solidification in transit.

Further, in the transport bin 210, a third insulation layer 230 is laid on the top plate at the top.

In this embodiment, in order to avoid external cold air etc. to get into the transportation storehouse, so set up the roof, the third heat preservation is laid to the roof simultaneously for the transportation storehouse is independent to be sealed, and external cold air and debris etc. are difficult for getting into.

Further, still including setting up in the waste material washing district of transportation district below, waste material washs district top, along transportation track direction, through heat preservation wall and heat preservation top, forms unsettled setting, and with the heat preservation transportation storehouse of waste material washing district isolation.

In this embodiment, in order to save the cost, whether fully consider the problem such as needs heating, keep apart waste material cleaning zone and transportation district storehouse specially, ensure the heat preservation that needs heat preservation, and can not need the waste material cleaning zone of heat preservation, not increase insulation structure.

Example 3

In this embodiment, the insulation of other areas is described.

Referring to fig. 5-6, the reservoir 310 includes a skeleton structure with a water filling port 330 disposed along a working surface, and a fourth insulation layer 320 is attached to an outer surface of the skeleton structure.

In this embodiment, utilize the skeleton texture to form the general structure of cell body, then lay the heat preservation, make it form semi-closed structure, the heat preservation constitutes the lateral part simultaneously, can realize keeping warm, and the skeleton texture is removed easily and is moved, later stage is convenient for form the cistern in other positions.

Further, a fifth insulation layer (not shown in the figure) is further included at the water filling port 330, and the fifth insulation layer is a polystyrene sandwich board.

In this embodiment, in order to avoid cold air's entering in cistern top, set up the second heat preservation, through the fifth heat preservation, can avoid water freezing to condense, unable scheduling problem.

Specifically, the second heating unit is a hot water pipeline, the first heating unit heats the radiator, and the hot water pipeline is connected with water supply of the radiator.

In this embodiment, referring to fig. 7, the hot water of the second heating unit 700 may be used as the water source of the first heating unit 620, that is, the hot water of the second heating unit 700, and after the heating of the second heating unit 700 is completed, the hot water flows to the first heating unit 620, so that the heating radiator in the first heating unit 620 is heated, and the heating environment in the stirring area is realized.

Further, the device further comprises a connecting pipeline for connecting the feeding area 100, the transportation area 20, the water storage area 300 and the stirring area 600, a heating wire is wound on the connecting pipeline, and a sixth heat insulation layer is attached to the outer side of the heating wire.

In this embodiment, the heating wire is added, when the external transmission is performed, the heating can be performed through the heating wire, and the sixth heat-insulating layer can ensure the heat preservation in heating, so that the waste of heat and resources is avoided.

Example 4

In this embodiment, the description is made in connection with actual construction.

The eastern project is located on the coast of the large Kachama Bay in the far east of Russia, belongs to the Hakko Towa area of the coastal side, and has the geographic coordinates of: north latitude 43 deg. 07', east longitude 132 deg.. The annual average temperature in the area is 4.9 ℃, the annual temperature difference is larger, the highest temperature is 35 ℃, the lowest temperature is-26.9 ℃, the winter cold period is long, the wind speed is more than 10m/s and is more than 40% of the whole year, and the environment is extremely bad.

The eastern project mainly comprises a dry dock and 2 outfitting wharfs, wherein the length of the dry dock is 485m, and the width of the dry dock is 114m; outfitting dock length # 2 409m; the 3# outfitting dock length is 400m. The concrete square volume of the design drawing is 460000 square, and the dry dock main body structure is large in volume and large in concrete square volume. The concrete construction is completed under the severe cold air temperature under the influence of air temperature conditions, and the cured concrete meets the design requirements and is not easy to realize.

Aiming at the defects of the conventional construction method, the company specially establishes a subject research group, designs and researches a reasonable construction method by combining the requirements of concrete supply and construction sites of mixing stations in Russian areas, utilizes a polyphenyl sandwich board to carry out totally-enclosed heat preservation on the mixing station production line comprising an aggregate feeding area, a transportation area and an additive storage area, builds a set of production heating system for the mixing stations, and wears 'thermal jackets' on the mixing stations.

The structure of the utility model is utilized, and the utility model is characterized in that:

the construction method uses simple equipment and materials to reform on the basis of a plurality of production lines of the original stirring station on the premise of not constructing a large-scale closed heat preservation bin, and controls each link in the production process so as to meet the requirement of mass and large-scale concrete production in severe cold areas.

The production line of the stirring station of the construction method is totally closed for heat preservation, so that the consumption of required materials is low while mass production of concrete in winter is ensured, the quality of the concrete can be effectively ensured, and the temperature of an outlet machine can be controlled. The mixing plant production line also comprises a concrete discharging area, and three sides of the concrete discharging area are resistant to wind, so that the discharging temperature of concrete is ensured, and the requirement of concrete pouring on a construction site can be met.

The heat insulating polystyrene sandwich board is one kind of high efficiency composite building material with color steel plate as surface, closed-hole self-extinguishing polystyrene plastic as core, and through molding with automatic continuous molding machine and adhering with high strength adhesive. The polyphenyl sandwich panel not only can well resist flame and insulate sound, but also is environment-friendly and efficient, in other words, the polyphenyl sandwich panel is formed by pressing an upper metal panel layer, a lower metal panel layer and a middle polymer heat insulation inner core, and has excellent heat preservation. The heat-insulating material is convenient to purchase and has a preferential price, and can bring ultrahigh economic benefit to projects.

The construction method is mainly based on winter concrete construction of eastern projects, is suitable for winter concrete construction of large-scale dock or large-volume and large-volume structures in severe cold areas, opens up a new technical thought of winter concrete construction in Russian areas, and ensures that the concrete construction quality meets design and specification requirements.

The project relies on winter concrete construction of large dock in Oriental project, researches on winter concrete supply in Russian severe cold areas, and is used for fully-closed heat preservation of a mixing station production line for preparing concrete. The stirring station production line comprises an aggregate feeding area, a transportation area and an additive storage area, wherein the aggregate feeding area, the transportation area and the additive storage area are sealed by a polyphenyl sandwich board.

The main building area of the stirring station production line is positioned between the aggregate feeding area and the concrete discharging area; the mixing station main building is installed in the mixing station main building district, and rock wool boards are taken from the second floor and the third floor of mixing station main building, and the trilateral wind-resistance of concrete ejection of compact district is effectual discharge temperature that keeps the concrete.

The aggregate loading area is provided with an aggregate storage yard, and the aggregate storage yard can meet the production requirement by airing water in advance in a high pile.

The production line of the stirring station adopts a 3 ton fuel steam and hot water dual-purpose boiler, a hot water radiator is adopted to keep the temperature of the totally-enclosed environment of the production line of the stirring station, 193 ℃ steam is used to heat aggregate and water used by the production line of the stirring station, heating treatment is carried out on the inside of a main building of the stirring station through a heating pipeline, and the inside of the main building of the stirring station reaches 15 ℃. The production line of the two-party machine adopts a hot water radiator to keep the whole closed environment, and the production line of the three-party machine adopts a steam radiator to keep the temperature.

The water supply pipeline of the main building of the stirring station is wound by an electric heating wire, and the outside is wrapped with heat preservation cotton for heat preservation; and (5) discharging the clean pipeline and the residual water of the water pump after each production.

The construction flow of the heat preservation system in this embodiment is as follows:

the totally-enclosed heat preservation of the stirring station production line shown in the accompanying drawings 1-8 is modified according to different material storage modes, and is divided into 5 areas: the construction process flow comprises a main building area of the mixing station, a belt conveying area, an aggregate feeding area, a reservoir area and an additive storage area.

1. Modification of main building area and additive area of mixing plant

The main building area of the mixing station is positioned between the aggregate feeding area and the concrete discharging area, and is provided with the main building of the mixing station, and belongs to a core area.

The second and third buildings of the stirring station are an operation room and a stirring machine bin, and the stirring station is sealed by a rock wool board before transformation, so that heat preservation transformation is not needed. The first floor is an open-air environment, an outer wall is added for winter heat preservation, a newly added benzene board surrounding wall is adopted for heat preservation, and a water heating pipeline and a heating device provided by a boiler are used for heating, so that the freezing-free environment is ensured. The concrete discharging area is arranged right below the main building, and three sides of the concrete discharging area are resistant to wind. The two silos of the water reducing agent and the air entraining agent are sealed by the polyphenyl sandwich plate in the additive areas at the two sides of the main building, the additive barrel needs to be an iron barrel, the additive silo is wrapped by heat-insulating cotton, and a circle of heating wires are wound on the outer side of the conveying pipeline to heat, so that the pipeline is prevented from being frozen. The additive for production needs to be stored in a warehouse, the warehouse is heated by an electric heater, and the temperature of the indoor temperature is kept above 5 ℃ to avoid the additive from being frozen.

2. Modification of aggregate feeding area

The aggregate feeding area sealing material adopts a polyphenyl sandwich board as a wall body. Taking the production line of the two-sided machine as an example, the aggregate feeding area is heightened on the basis of original concrete and is flush with the rear cornice of the feeder, and the front cornice gap of the feeder is welded by adopting a steel plate and is flush with the rear cornice after welding. The top is sealed by adopting a triangular jack, and the front half part is a movable ceiling which is used as a feeding port.

3. Belt transportation area modification

The belt conveying area sealing material adopts a polyphenyl sandwich board as a wall body. Taking a two-side machine production line as an example, the connecting part of the transportation area and the aggregate feeding area inclines along the roof of the feeding area, the waste cleaning part of the transportation area adopts a floor totally-enclosed package, and the waste cleaning part is connected with the outlet of a main building by adopting a suspended totally-enclosed package.

4. Reservoir zone retrofit

In order to meet the normal production of a concrete mixing plant, the general design volume of the water storage tank is not less than 200m < 3 >, the water temperature for winter construction is preferably 60 ℃, a 20m < 3 > water storage tank is additionally arranged in the concrete mixing plant, a framework is built by adopting square steel with the size of 40 mm, and a wall body and the top are sealed, covered and insulated by adopting polystyrene sandwich boards.

5. Heating system of mixing plant

The mixing plant adopts a 3 ton fuel steam and hot water dual-purpose boiler, the 193 ℃ steam is used for heating aggregate and water, the two-party machine production line adopts a hot water radiator for heat preservation of the whole closed environment, and the three-party machine production line adopts a steam radiator for heat preservation. Forming an integral heating system;

the stirring station is heated to heat the inside of the stirring station through a heating pipeline, and the inside of the stirring building reaches 15 ℃. The water is heated by steam, 1 cubic meter of water can be heated to 60 ℃ in 2 minutes, and the on-site production requirement is met.

The sand and stone materials and water in the proportioning bin are heated by adopting 193 ℃ steam, a steam pipeline adopts a seamless steel pipe, and rock wool is wrapped outside the steel pipe for heat preservation. To prevent the heat loss of the heated aggregate, the additive is freeze-protected. When the material is added into the batching machine, the material is rapidly heated by steam in a batching machine bin, and the temperature is not required to be too high, so that the normal blanking and normal conveying of the material are ensured.

The heat exchange method is adopted in the reservoir heating method, and the hot water heated by the boiler flows to the heat exchange plate through the seamless steel pipe and then transfers heat to cold water circulating in the reservoir, so that the temperature of the cold water in the reservoir is raised, and the concrete production requirement is met. However, the water for production in the large reservoir needs to be kept at more than 0 ℃ to ensure that the water does not freeze. All waterway pipelines of the mixing station are required to be set with a gradient not less than 3%, and a water drain valve is arranged at the lowest point, so that residual accumulated water in the waterway pipelines can be drained in time when the concrete mixing station stops production, and the waterway pipeline valve is prevented from being frozen and cracked. Besides, all waterways and additive pipelines need to be wrapped with heating wires, 45-degree spiral winding is carried out along the pipeline, the distance is not more than 10cm, the outer sides of the heating wires are wrapped by heat-insulating cotton tightly, the outer sides of the heat-insulating cotton are spirally wound by tinfoil paper, and the heat generated by heating belts is prevented from being gradually dissipated through the heat-insulating cotton, so that the heat-insulating effect cannot be achieved. In addition, all the pipelines must be made of galvanized steel pipes, and plastic PF pipes are not suitable.

The temperature controllers are arranged in the water reservoir and the additive barrel, heat exchange can be stopped immediately when the temperature is higher than 60 ℃, and heat can be automatically supplied when the temperature is lower than 60 ℃.

TABLE 1 Main materials and Equipment Table of the present construction method

And (3) quality control:

1) When concrete is mixed, the concrete is produced strictly according to the mixed proportion, and the mixed proportion is strictly forbidden to be modified without permission; concrete transported to the site is strictly prohibited from being added with water at the site.

2) The stirring time of the concrete in winter construction is prolonged by 50% compared with normal-temperature construction, the stirring time is 120S, and the outlet temperature of the concrete is ensured to be 10-18 ℃.

3) The process water should be heated to 45-80 c, specifically adjusted by air temperature variation (aggregate temperature).

4) And the feeding sequence during stirring is adjusted, so that the phenomenon of pseudo-coagulation caused by direct contact of hot water and the cementing material is avoided. During production, the aggregate and hot water are firstly added and stirred uniformly, and then the cementing material and the additive are added. ( The feeding sequence for winter construction: and adding hot water into the aggregate, stirring for 30S, ensuring that the temperature of the mixture is less than 40 ℃, and adding the cementing material additive, mixing and stirring for 90S. )

5) Before and after the concrete is stirred, a stirring disc or a drum of the stirrer is washed by hot water. Aggregate stacking is covered by adopting a heat insulation material, so that frozen blocks are prevented. If the concrete is frozen, the frozen part on the surface is removed before use, and the concrete cannot be stirred. And stirring the lower unfrozen sand and stone material for concrete.

6) The temperature of various materials for stirring concrete should meet the required temperature after stirring concrete, and when the temperature can not meet the requirement, the water for stirring is heated, the highest heating temperature is not more than 80 ℃, and the cement is not heated until the temperature is kept. The cement is forbidden to be in direct contact with water with the temperature of more than 80 ℃.

Safety measures are as follows:

1) All staff should strengthen the safety awareness, establish the policy of 'first safety, foredefense as main', and establish a safety system including team and group owner safety officers.

2) And (3) making a safety operation rule and a construction operation rule of equipment, setting lighting, guardrails and safety warning marks on a construction site, and providing a safety patrol worker to avoid personal injury and property loss caused by various reasons.

3) The safety inspection staff is responsible for the safety inspection supervision work of each class of production line and timely supervising and improving various unsafe factors on construction sites.

4) The instrument equipment is provided with a start-stop reminding system; the host checks that the door is opened and has a power-off protection system; diode leakage protection system

5) Fire extinguishers are required to be mixed in the dangerous source place, and the fire extinguishers are checked regularly to ensure normal use.

6) The mixing plant is provided with an emergency generator as a standby power supply so as not to influence the concrete production.

Environmental protection

1) The project department establishes an environmental protection leader group and is responsible for the environmental protection work of the project;

2) Solid waste generated by equipment construction and mechanical maintenance cannot be discarded at will, and is uniformly collected and transferred to a licensed uniform place for centralized treatment;

3) The environmental protection work inspection of the stirring station is enhanced, and the important point is equipment conditions such as dust and dust of a storage bin on a boiler or a silo. Once partial steam leakage and oil leakage occur, a special person takes charge of taking relevant treatment measures,

4) The waste concrete of the mixing plant must be treated intensively and a centralized car washing pool is provided. If small-sized mechanical equipment leaks a small amount of oil sewage into the river due to unexpected conditions, so that the water and oil pollution of the river is caused, the floating oil recovery ship is adopted to recover the floating oil, and the oil pollution is firstly surrounded by an oil containment boom in the floating oil area so as to prevent the oil pollution from diffusing.

Energy saving and consumption reduction:

1) The project department establishes a leading group for energy conservation and consumption reduction, and enhances propaganda for energy conservation and consumption reduction;

2) The field mechanical equipment is arranged to be responsible by special persons, so that idle running and waste which are not needed by work are avoided;

3) The management of on-site mortar and concrete stirring water is enhanced;

4) The arrangement specialist is responsible for the electricity management on site.

Benefit analysis

After the fully-closed heat preservation of the production line of the stirring station, the construction method is adopted to construct the concrete, and the production efficiency of the concrete is improved by 50 percent through site construction statistics.

Economic benefit

According to the conventional construction method, concrete production is carried out in severe cold areas, when the air temperature is lower than 0 ℃, a main machine of a stirring station, a water flow pipeline and an aggregate feeding bin are quite likely to be frozen, and according to the process, production can maintain the most basic production task only by 3 times of personnel and mechanical equipment, and the process does not comprise loss of a construction site. The conventional construction method has instability when concrete production is carried out in severe cold areas, and the benefit loss brought to the construction site is difficult to measure. Winter construction in Russian region affects more than 5 months (11-3 months)

At the moment, the heating system of the stirring station can effectively ensure the production and construction of the on-site concrete. Under the same construction period, the economic benefit brought by the totally-enclosed heating system of the stirring station is mainly represented in the aspects of main machine freezing removal of the stirring station, aggregate feeding bin freezing removal, water flow pipeline freezing removal, reservoir freezing removal, mechanical equipment freezing removal, labor cost, misoperation cost brought to a construction site by chain reaction and the like. Total economic benefit=548+128+714.5-269.7 = 1120.8 ten thousand yuan. The specific calculations are shown in the following table:

TABLE 2 economic benefits calculation Table

Social benefits

1 the construction efficiency is high, the construction period is ensured

Oriental projects are large docks, and landmark buildings in Russian. After the totally-enclosed heat preservation and supply system of the mixing plant is transformed, the task of concrete production and construction is effectively guaranteed, the construction period is guaranteed not to lag, the construction process of the eastern projects is effectively accelerated, the process of realizing open operation of the dock is accelerated, and perfect bedding is achieved in the stable rooting and long-term development of the Russian market.

2 external operation of stirring station

After the new construction and the transformation of the stirring station are completed, the stirring station belongs to the stirring station with the largest Russian local area, can provide concrete for other projects, and can generate certain benefits.

The construction method is mainly applied to the concrete supply of the eastern project construction site, is applied to the construction of dry dock and 2-seat outfitting wharf unit projects, has greatly improved construction work efficiency compared with the traditional construction method, and has the following specific application parts and project amounts:

and (3) filling the pile: 1020mm, 1220mm and 1520mm cast-in-place piles, total 695 cast-in-place piles, and 32460m of cast-in-place concrete ³ 。

And concrete pouring 66800m < 3 > is performed on structural parts such as a dock room bottom plate, an east dock wall, a west dock wall, an east corridor, a west corridor, a lifting lane, a No. 2 outfitting wharf, a No. 3 outfitting wharf, a connecting wharf and the like.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. A heat preservation system for a stirring station is characterized by comprising,

the feeding area comprises a feeding bin with an opening and a top cover arranged at the opening of the feeding bin, and a first heat preservation layer for heat preservation of the feeding bin is arranged on the outer surface of the feeding bin;

the conveying area is arranged at the side part of the upper bin and extends into the upper bin, the conveying area is provided with a conveying bin, and a second heat preservation layer is arranged on the conveying bin;

the water storage area is internally provided with a water storage tank, and the outer side of the water storage tank is provided with a heat preservation structure;

the stirring zone is internally provided with a stirring station in the closed environment, the transportation zone and the water storage zone are respectively connected with the stirring station, and the stirring zone is connected with a first heating unit for heating in the stirring zone;

the second heating unit is used for heating materials in the stirring station and is connected with the first heating unit.

2. The heat preservation system for a mixing plant according to claim 1, wherein the upper bin comprises a bottom plate and a side plate arranged on the periphery of the bottom plate, and the side plate is provided with the first heat preservation layer.

3. The heat preservation system for a mixing plant according to claim 2, wherein the cross section of the top cover is of a triangular structure, and the longest bottom edge of the triangular structure is close to the opening of the feeding area.

4. The heat preservation system for a mixing plant according to claim 1, further comprising a transportation rail obliquely arranged along the transportation area, wherein heat preservation walls are arranged on two sides of the transportation rail, and the heat preservation walls, the transportation rail body and a top plate at the top form a closed heat preservation transportation bin.

5. The heat preservation system for a mixing plant according to claim 4, wherein a third heat preservation layer is paved on a top plate at the top in the transportation bin.

6. The heat preservation system for a mixing plant of claim 4, further comprising a waste cleaning zone disposed below the transport zone, wherein the waste cleaning zone is disposed above the waste cleaning zone, along the direction of the transport track, through the heat preservation wall and the heat preservation roof, to form a heat preservation transport bin suspended and isolated from the waste cleaning zone.

7. The heat preservation system for a mixing plant according to claim 1, wherein the reservoir comprises a framework structure with a water filling port arranged along the working surface, and a fourth heat preservation layer is attached to the outer surface of the framework structure.

8. The heat preservation system for a mixing plant of claim 7 further comprising a fifth heat preservation layer disposed at the water filling port, the fifth heat preservation layer being a polystyrene sandwich panel.

9. The heat preservation system for a mixing plant according to claim 1, wherein the second heating unit is a hot water pipeline, the first heating unit is a radiator for heating, and the hot water pipeline is connected with water supply of the radiator.

10. The heat preservation system for a mixing plant according to claim 1, further comprising a connecting pipeline for connecting the feeding area, the transportation area, the water storage area and the mixing area, wherein a heating wire is wound on the connecting pipeline, and a sixth heat preservation layer is attached to the outer side of the heating wire.