Cement slurry mixing plant

Abstract

The present invention discloses a cement slurry mixing station, which includes a slurry storage tank, a water storage tank and a refrigeration device, wherein a heat-insulating interlayer is provided on the outer peripheral side of the slurry storage tank; the water storage tank is connected to the heat-insulating interlayer through a pipeline; the refrigeration device is provided on the pipeline between the water outlet of the water storage tank and the heat-insulating interlayer, and the refrigeration device is used to cool the water flowing out of the water storage tank. The cement slurry mixing station of the present invention reduces the temperature of the slurry storage tank through the refrigeration device, thereby reducing the temperature of the cement slurry.

Description

Technical Field

[0001] The invention relates to the technical field of concrete processing, and in particular to a cement slurry mixing station. Background Art

[0002] In the related art, the inner containment of a nuclear power plant adopts a post-tensioning prestressed concrete construction process. After the inner containment concrete construction is completed, a bundle of steel strands is inserted into the reserved prestressed pipe and tensioned, and then cement slurry is poured into the prestressed pipe to improve the stability of the prestressed pipe to the inner containment. The temperature of the newly produced cement slurry is relatively high. When the pouring temperature of the cement slurry is too high, the fluidity of the cement slurry will deteriorate, large gaps will easily appear, and it will also shrink and crack after cooling. The traditional cooling method mainly sets an insulation interlayer on the outside of the slurry storage tank. The staff needs to add crushed ice to the insulation interlayer to achieve the purpose of cooling. However, different cement slurries have different optimal working temperatures. It is difficult to control the cooling temperature by artificially adding crushed ice, which makes the cooling effect of the cement slurry poor. Summary of the invention

[0003] The main purpose of the present invention is to provide a cement slurry mixing station, which aims to reduce the temperature of the slurry storage tank by a refrigeration device, thereby reducing the temperature of the cement slurry.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a cement slurry mixing station, wherein the cement slurry mixing includes a slurry tank, a water storage tank and a refrigeration device, wherein a thermal insulation interlayer is provided on the outer peripheral side of the slurry tank; the water storage tank is connected to the thermal insulation interlayer through a pipeline; the refrigeration device is arranged on the pipeline between the water outlet of the water storage tank and the thermal insulation interlayer, and is used to cool the water flowing out of the water storage tank.

[0005] Optionally, the water outlet of the water storage tank is communicated with the bottom of the thermal insulation interlayer, and the water inlet of the water storage tank is communicated with the top of the thermal insulation interlayer.

[0006] Optionally, the cement slurry mixing station also includes a water pump, which is installed on a pipeline between the refrigeration device and the water storage tank.

[0007] Optionally, the refrigeration device includes a box body and a cooling machine arranged in the box body, and the cooling machine is used to cool water in the box body.

[0008] Optionally, the refrigeration device further comprises an ice maker, which is connected to the water storage tank and is used to provide ice cubes to the water storage tank.

[0009] Optionally, the refrigeration device further comprises a cooling tower, and the cooling tower is used to dissipate heat from the ice maker.

[0010] Optionally, the refrigeration device is further provided with an ice storage bin, which is connected to the ice maker and the water storage tank.

[0011] Optionally, the cement slurry mixing station further comprises a stirring device, and the stirring device is connected to the slurry storage tank.

[0012] Optionally, a three-way valve is provided at the bottom of the stirring device, and the three-way valve has a first valve port, a second valve port and a third valve port; wherein the first valve port is connected to the bottom of the stirring device, the second valve port is connected to the slurry storage tank, and the third valve port is connected to the top of the stirring device.

[0013] Optionally, there are multiple stirring devices, and all of the multiple stirring devices are connected to the slurry storage tank.

[0014] The technical solution of the present invention is provided with a slurry storage tank, a water storage tank and a refrigeration device. A thermal insulation interlayer is provided on the outer peripheral side of the slurry storage tank. The water storage tank is connected to the thermal insulation interlayer through a pipeline. The refrigeration device is arranged on the pipeline between the water outlet of the water storage tank and the thermal insulation interlayer. The refrigeration device is used to cool the water flowing through it. In this way, since the cement slurry mixing station is provided with a refrigeration device, the refrigeration device cools the temperature of the outflow from the water storage tank, and then flows into the thermal insulation interlayer to perform heat exchange on the cement slurry, thereby reducing the temperature of the cement slurry, and then the temperature of the cement slurry is more accurately controlled by the refrigeration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a structural schematic diagram of an embodiment of a cement slurry mixing station of the present invention;

[0017] Figure 2 for Figure 1 A top view of the

[0018] Figure 3 A schematic diagram of the construction of a cement slurry mixing station of the present invention;

[0019] Figure 4 Schematic diagram of the cooling system of the present invention.

[0020] Description of Figure Numbers:

[0021]

[0022] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] See also Figure 1 The present invention provides an embodiment of a cement slurry mixing station, which is used to process cement slurry, for example, the cement slurry mixing station is used to process cement slurry, for example, concrete slurry or expansion slurry. In the following embodiments, the application of processing cement slurry is mainly used as an example for description, and other applications requiring cement slurry mixing stations can be implemented with reference.

[0027] See also Figure 4 In one embodiment of the cement slurry mixing station of the present invention, the cement slurry mixing station includes a slurry tank 340, a water storage tank 120 and a refrigeration device 410, wherein a thermal insulation interlayer 341 is provided on the outer peripheral side of the slurry tank; the water storage tank 120 is connected to the thermal insulation interlayer 341 through a pipeline; the refrigeration device 410 is arranged on the pipeline between the water outlet of the water storage tank 120 and the thermal insulation interlayer 341, and the refrigeration device 410 is used to cool the water flowing through it.

[0028] Specifically, the thermal insulation interlayer 341 of the slurry storage tank 340 is a double-layer structure of inner and outer layers, and the outer layer of the thermal insulation interlayer 341 is provided with a water inlet and a water outlet. The water outlet of the water storage tank 120 is connected to the refrigeration device 410, the refrigeration device 410 is connected to the water inlet of the thermal insulation interlayer 341, and the water outlet of the thermal insulation interlayer 341 is connected to the water inlet of the water storage tank 120, thereby forming a circulation passage for water flow. When the cement slurry mixing station is working, when the temperature of the cement slurry is too high, the refrigeration device 410 starts to operate. The refrigeration device 410 cools the water flow flowing out of the water storage tank 120, and the water flow flowing out of the refrigeration device 410 flows to the slurry storage tank 340, the cement slurry transfers heat to the slurry storage tank 340, the water flow absorbs the heat of the slurry storage tank 340, and finally the water flow flows back to the water tank, thereby completing the cooling of the cement slurry.

[0029] Since the cement slurry mixing station is provided with a refrigeration device 410, the refrigeration device 410 cools the temperature of the water flowing out from the water storage tank 120, thereby reducing the temperature of the cement slurry, and further the temperature of the cement slurry can be controlled more accurately.

[0030] The technical solution of the present invention comprises a slurry tank 340, a water tank 120 and a refrigeration device 410. A thermal insulation interlayer 341 is arranged on the outer peripheral side of the slurry tank 340. The water tank 120 is connected with the thermal insulation interlayer 341 through a pipeline. The refrigeration device 410 is arranged on the pipeline between the water outlet of the water tank 120 and the thermal insulation interlayer 341. The refrigeration device 410 is used to cool the water flowing through it. In this arrangement, since the cement slurry mixing station is provided with the refrigeration device 410, the refrigeration device 410 cools the temperature of the water flowing out of the water tank 120, and then flows into the thermal insulation interlayer 341 to perform heat exchange on the cement slurry, thereby reducing the temperature of the cement slurry, and then the temperature of the cement slurry is more accurately controlled by the refrigeration device 410.

[0031] See also Figure 4 In one embodiment, the water outlet of the water storage tank 120 is communicated with the bottom of the thermal insulation interlayer 341, and the water inlet of the water storage tank 120 is communicated with the top of the thermal insulation interlayer 341. Specifically, in order to control more accurately, the water outlet of the water storage tank 120 is first communicated with the refrigeration device 410, and then the refrigeration device 410 is communicated with the bottom of the thermal insulation interlayer 341, that is, the water inlet of the thermal insulation interlayer 341 is located at the bottom of the slurry storage tank 340. The water inlet of the water storage tank 120 is communicated with the top of the thermal insulation interlayer 341, so that the water flow of the thermal insulation interlayer 341 flows back into the water tank, that is, the water outlet of the thermal insulation interlayer 341 is located at the top of the slurry storage tank 340. This arrangement makes the fluidity of the water flow in the thermal insulation interlayer 341 better, so that it is easier to cool the cement slurry.

[0032] See also Figure 4In one embodiment, the cement slurry mixing station further includes a water pump, which is installed on the pipeline between the refrigeration device 410 and the water storage tank 120. Specifically, the water pump is installed between the water outlet of the water storage tank 120 and the pipeline of the refrigeration device 410, and the water in the water storage tank 120 flows to the refrigeration device 410 after being pressurized by the water pump, and the water pump can provide power for the circulation of water in the pipeline.

[0033] In one embodiment, the refrigeration device 410 includes a box body and a cooling machine 411 disposed in the box body, and the cooling machine 411 is used to cool the water in the box body. Specifically, in order to improve the effect of cooling the cement slurry, the number of cooling machines 411 can be set to one or more, and multiple cooling machines 411 can be connected in series or in parallel to cool the water flow at the water outlet of the water storage tank 120. Of course, when multiple cooling machines 411 are connected in parallel, valves are set at both ends of the cooling machine 411, and they are switched according to the working conditions of the cement slurry mixing station, so that energy can be used more accurately, thereby avoiding energy waste.

[0034] In another embodiment, the refrigeration device 410 further includes an ice maker 412, which is connected to the water storage tank 120 and is used to provide ice cubes to the water storage tank 120. Specifically, when the workload of the cement slurry mixing station is large and the cooling speed of the coolant cannot keep up, in order to avoid ensuring the cooling effect of the refrigeration device 410, the water flow can be cooled after flowing back from the outlet of the thermal insulation interlayer 341 to the water storage tank 120. Therefore, an ice maker 412 is provided in the refrigeration device 410, and the ice maker 412 is connected to the water inlet of the water storage tank 120. The ice maker 412 is used to provide ice cubes to the water storage tank 120, thereby cooling the water in the water storage tank 120 and ensuring the mixing effect of the cement slurry.

[0035] It is understandable that in order to save land resources and processing costs, as well as to ensure the processing temperature of cement slurry, cement slurry mixing plants are generally set up in relatively closed workshops. Since high temperature will affect the fluidity of cement slurry, it is necessary to control the ambient temperature of the workshop and keep the ambient temperature at the indicated temperature, for example, the ambient temperature is less than 32°C. Of course, different cement slurries have different ambient temperatures, and the ambient temperature should be determined according to the actual processing conditions.

[0036] In order to solve the above-mentioned technical problems, it is necessary to exchange heat for the equipment that is easy to radiate heat. In one embodiment, the refrigeration device 410 also includes a cooling tower 413, and the cooling tower 413 is used to cool the ice maker 412. Specifically, the volume of the cooling tower 413 is large, so it is generally installed outdoors. The cooling tower 413 exchanges heat with the refrigerant of the ice maker 412, and the cooling water with a lower temperature from the cooling tower 413 enters the condenser of the ice maker 412, then takes away the heat of the condenser, and is finally sent to the cooling tower 413 for spraying. Due to the rotation of the fan of the cooling tower 413, the water flow is continuously cooled by heat and moisture exchange with the outdoor air during the spraying and falling process, and the water flow falls into the water pan of the cooling tower 413, and then enters the next cycle after being pressurized by the cooling pump again.

[0037] In another preferred embodiment, the refrigeration device 410 is further provided with an ice storage bin 414, which is connected to the ice maker 412 and the water storage tank 120. Specifically, when the workload of the cement slurry mixing station is large, the ice storage bin 414 can be used to connect the ice maker 412 and the water storage tank 120, and the ice storage bin 414 is used to load the ice cubes made by the ice maker 412. In this way, the ice cubes in the ice storage bin 414 can be used in the water storage tank 120 to cool the water in the water storage tank 120. Secondly, the ice cubes in the ice storage bin 414 can be exposed to the factory building to cool the ambient temperature of the factory building. In addition, the ice cubes in the ice storage bin can be used to process cement slurry, and when mixing cement, the heat released by the cement can be cooled.

[0038] Based on the above examples, please refer to Figure 3 The cement slurry mixing station further includes a stirring device, which is connected to the slurry storage tank 340. Specifically, the stirring device is used to stir the cement slurry, and finally the stirred cement slurry is stored in the slurry storage tank 340. Further, in one embodiment, there are multiple stirring devices, and the multiple stirring devices are all connected to the slurry storage tank 340. Specifically, in this embodiment, the number of stirring devices is two, and the two stirring devices can increase the volume of cement slurry production. In addition, it can also avoid the situation where one of the stirring devices is damaged and cannot make slurry, thereby ensuring the orderly operation of the cement slurry processing work.

[0039] On the basis of the previous embodiment, a three-way valve 415 is provided at the bottom of the stirring device, and the three-way valve 415 has a first valve port, a second valve port and a third valve port; wherein the first valve port is connected to the bottom of the stirring device, the second valve port is connected to the slurry storage tank 340, and the third valve port is connected to the top of the stirring device. Specifically, the stirring device includes a stirring barrel 310, a motor 320 and an agitator, wherein the motor 320 is connected to the agitator, and the agitator is located in the stirring barrel 310. As for the structure of the agitator, an impeller may be provided on the agitator, so that the agitator is used to stir the cement slurry in the stirring barrel 310.

[0040] It can be understood that the three-way valve 415 is arranged at the bottom of the mixing barrel 310, and the three-way valve 415 has a first valve port, a second valve port and a third valve port, and a valve can also be arranged at the outlet of each valve port to control the inlet and outlet of cement slurry. When the first valve port and the second valve port are in an open state, the cement slurry in the mixing barrel 310 can be transported to the slurry storage tank 340, and the agitator in the mixing barrel 310 can squeeze the cement slurry into the slurry storage tank 340, thereby transporting the cement slurry in the mixing barrel 310 to the slurry storage tank 340. In addition, a three-way valve can also be arranged between the second valve port and the mixing barrel 310, so that the cement slurry with better quality is transported to the slurry storage tank 340, and the cement slurry with poor quality is discharged. When the first valve port and the third valve port are in an open state, the agitator can provide power for the cement slurry, and the cement slurry in the mixing barrel 310 can be returned to the top through the third valve port at the bottom, so as to realize the mixing cycle of the cement slurry, improve the mixing performance of the agitator, make the slurry more fully mixed, the slurry more delicate, and the performance more stable.

[0041] In one embodiment, see Figures 1 to 4 The cement slurry mixing station is composed of multiple systems, including a raw material storage system 100, a batching system 200, a mixing and storage system 300 and a cooling system 400, wherein the raw material storage system 100 includes a cement silo 110, a water storage tank 120 and an admixture tank 130; the batching system 200 includes a spiral distributor 250, a spiral conveyor 210, a cement metering mechanism 220, a water metering mechanism 230 and an admixture metering mechanism 240; the mixing and storage system 300 includes a mixing device, a U-shaped guide rail 330, a slurry storage tank 340 and a secondary mixing device 350; the cooling system 400 includes a refrigeration device 410 and an air conditioner.

[0042] Specifically, in this embodiment, there are multiple cement silos 110, and different cement silos 110 can store different cements. The number of cement silos 110 can be set according to actual conditions and is not limited here. Each cement silo 110 is equipped with a screw conveyor 210 to convey cement respectively. The cement silo 110 is connected to the cement metering mechanism 220 through the screw conveyor 210, and the weight of the cement is controlled by the cement metering mechanism 220, and finally transported to the mixing barrel 310. Since there are multiple mixing barrels 310, a screw distributor 250 can be set between the cement metering mechanism and the mixing barrel 310 for material distribution. The water storage tank 120 is used to store water. The water storage tank 120 is connected to the water metering mechanism 230 through a submersible pump. The water storage tank 120 supplies water to the water metering mechanism 230 through the submersible pump. The water metering mechanism 230 controls the water intake through its own sensor, and finally the water volume mechanism adds water to the mixing barrel 310. The additive tank 130 is connected to the additive metering mechanism 240 through the additive pump, and the additive tank 130 supplies materials to the additive metering mechanism 240 through the additive pump, and the additive metering mechanism 240 controls the weight of the additive through its own sensor. It should be noted that the water metering mechanism 230, the cement metering mechanism 220 and the additive metering mechanism 240 are all equipped with sensors, and appropriate sensors can be selected to provide metering accuracy.

[0043] It is understandable that the water storage tank 120 includes a stirring water tank 121 and a cooling water tank 122, and the stirring water tank 121 and the cooling water tank 122 can be connected through a ball valve. The water in the stirring water tank 121 is used for stirring, and the cooling water tank 122 is connected to the refrigeration device 410. In this way, not only the stirring water of the stirring barrel 310 is guaranteed, but also the cooling water of the refrigeration device 410 is guaranteed.

[0044] In one embodiment, the outlets of the water metering mechanism 230, the cement metering mechanism 220 and the admixture metering mechanism 240 are all provided with butterfly valves, and the type of butterfly valve should be selected according to the type of materials (water, cement and admixture). After the butterfly valve is opened, the materials flow into the mixing barrel 310 for mixing.

[0045] For the stirring device, a relay may be provided, and the relay is connected to the motor 320 to control the rotation speed of the motor 320, so that the stirrer rotates at a low speed when feeding, discharging and waiting for discharging, and rotates at a high speed when stirring, thereby making more rational use of resources and facilitating the processing of cement slurry.

[0046] In one embodiment, the U-shaped guide rail 330 is arranged on the top of the factory building, and the secondary mixing device 350 is suspended on the U-shaped guide rail 330. The secondary mixing device 350 can slide on the U-shaped guide rail 330, and can control the mixing of the cement slurry in the slurry storage tank 340, thereby realizing the secondary mixing of the cement slurry, and then delaying the setting time of the cement slurry. In this embodiment, the number of the secondary mixing device 350 is one, and the secondary mixing device 350 can be orderly controlled to mix the cement slurry in the slurry storage tank 340. In other embodiments, in order to improve the efficiency of the secondary mixing, a plurality of secondary mixing devices 350 can be provided, and each slurry storage tank 340 is connected to a corresponding secondary mixing device 350. In addition, each slurry storage tank 340 can also be provided with a valve connected to the slurry transport tank 500. After the cement slurry in the slurry storage tank 340 is loaded into the slurry transport tank 500, the slurry transport tank 500 is loaded with a slurry transport vehicle 600 and transported to the construction site.

[0047] For the cooling system 400, an air conditioner can be installed in the factory, and the air conditioner can adjust the ambient temperature in the factory. The cooling machine 411 in the refrigeration device 410 can be installed outdoors, and the outdoor air is used to dissipate the heat of the cooling machine 411. In other embodiments, a cooler can be used instead of the cooling machine 411, and a fan can be set to cool the cooler.

[0048] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A cement slurry mixing station, characterized in that: The cement slurry mixing station is composed of multiple systems, including: a raw material storage system, a batching system, a mixing and storage system, and a cooling system; the raw material storage system includes a cement silo, a water storage tank, and an admixture tank; the batching system includes a spiral distributor, a spiral conveyor, a cement metering mechanism, a water metering mechanism, and an admixture metering mechanism; the mixing and storage system includes a mixing device, a U-shaped guide rail, a slurry storage tank, and a secondary mixing device; the cooling system includes a refrigeration device and an air conditioner; The cement slurry mixing station is arranged in a factory building, the U-shaped guide rail is arranged on the top of the factory building, and the secondary mixing equipment is suspended on the U-shaped guide rail; the secondary mixing equipment can slide on the U-shaped guide rail to mix the cement slurry in the slurry storage tank; each of the slurry storage tanks is also provided with a valve connected to a slurry transport tank to load the cement slurry in the slurry storage tank into the slurry transport tank; The outer peripheral side of the slurry storage tank is provided with a thermal insulation interlayer; The water storage tank is connected to the thermal insulation interlayer through a pipeline; The refrigeration device is arranged on the pipeline between the water outlet of the water storage tank and the thermal insulation interlayer, and the refrigeration device is used to cool the water flowing out of the water storage tank; The refrigeration device comprises: Box; A cooling machine is arranged in the box body, and the cooling machine is used to cool the water in the box body; An ice maker, the ice maker is connected to the water inlet of the water storage tank, the ice maker is used to provide ice cubes to the water storage tank, and the ice maker has a condenser for refrigeration; A cooling tower is used to dissipate heat from the ice maker. The cooling tower exchanges heat with the refrigerant of the ice maker. The cooling water with a lower temperature from the cooling tower enters the condenser of the ice maker, takes away the heat from the condenser, and is finally sent to the cooling tower for spraying.

2. The cement slurry mixing station according to claim 1, characterized in that: The water outlet of the water storage tank is communicated with the bottom of the thermal insulation interlayer, and the water inlet of the water storage tank is communicated with the top of the thermal insulation interlayer.

3. The cement slurry mixing station according to claim 1, characterized in that: The cement slurry mixing station also includes a water pump, which is installed on the pipeline between the refrigeration device and the water storage tank.

4. The cement slurry mixing station according to claim 1, characterized in that: The refrigeration device is also provided with an ice storage bin, and the ice storage bin is connected to the ice maker and the water storage tank.

5. The cement slurry mixing station according to any one of claims 1 to 4, characterized in that: The stirring device is connected to the slurry storage tank.

6. The cement slurry mixing station according to claim 5, characterized in that: A three-way valve is provided at the bottom of the stirring device, and the three-way valve has a first valve port, a second valve port and a third valve port; wherein the first valve port is connected to the bottom of the stirring device, the second valve port is connected to the slurry storage tank, and the third valve port is connected to the top of the stirring device.

7. The cement slurry mixing station according to claim 5, characterized in that: There are multiple stirring devices, and all of the stirring devices are connected to the slurry storage tank.

Images