Accurate mixing control system suitable for large-scale precooled concrete production

Abstract

The invention relates to the related technical field of mixing plants, and discloses a precise mixing control system suitable for large-scale precooled concrete production, the precise mixing control system uses a mixing plant and a mistake-proof valve of a feed bin pipeline of the mixing plant, and the precise mixing control system comprises a feed bin body, a material level meter, a control device and a control device, a cleaning and discharging valve is arranged in the center of the bottom of the stock bin body; the mistake-proof valve is installed at the through connection position of the feeding pipe and the stock bin body, the mistake-proof valve comprises a pre-storage cavity formed in the inner wall of the stock bin body, and the pre-storage cavity communicates with the feeding pipe; the positioning cylinder is fixed to the top of the pre-storage cavity, a push rod is movably installed in the positioning cylinder in a telescopic mode, and the tail end of the push rod is fixedly connected with the upper end of a rod piece. According to the precise mixing control system suitable for large-scale precooling concrete production, precooling treatment of large-scale concrete is achieved, and meanwhile, when a material bin pipeline is used for conveying materials, the problem that the materials are fed by mistake when the materials are conveyed through the interior of the pipeline is effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field related to mixing plants, and specifically relates to a precise mixing control system suitable for large-scale pre-cooled concrete production. Background Art

[0002] For large-scale concrete buildings, in order to ensure sufficient concrete materials to be used during construction, a pre-cooling system and its mixing plant module components will be used. For example, when the mixing plant template is used to mix various raw materials with concrete, the mixing reaction of the concrete materials and the heat generation reaction during the concrete solidification process will cause the stress of the concrete to change during the molding process. When the internal tensile stress of the concrete is greater than the tensile strength of the concrete itself during the process, the structural damage of the concrete will occur. Therefore, a matching pre-cooling system is required to achieve large-scale large-scale concrete mixing control;

[0003] However, the existing mixing control system uses a silo structure for the mixing plant. When the corresponding pipeline of the silo is used to transport materials, because the various materials used for concrete mixing are different, it is necessary to match a one-to-one corresponding silo to achieve the storage of different materials in the corresponding silos, so as to avoid the destruction of the material's own characteristics during the storage process due to the different types and chemical properties of the materials stored in the silo.

[0004] However, in the actual process, when the materials are transported to the inside of the silo through the silo pipeline, the storage of the materials is achieved by manually matching the silo and the materials during transportation. In this process, due to the centralized storage of multiple silos, the correspondence between the materials and the silos is prone to deviations during the material transportation process, causing the wrong materials to be loaded into the silo pipeline or the materials to go through the wrong door when transporting materials, affecting the storage and isolation protection effect of the silo on the materials.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original large-scale concrete mixing control system. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a precise mixing control system suitable for large-scale pre-cooled concrete production, so as to solve the problem that the existing large-scale concrete mixing control system proposed in the above background technology has a tendency to have a corresponding deviation between materials and silos during the material transportation process due to the centralized storage of multiple silos, which makes it easy for the silo pipeline to load the wrong materials or go through the wrong door when transporting materials.

[0007] The present invention solves the technical problem by the following technical solutions:

[0008] A precise mixing control system suitable for large-scale pre-cooled concrete production, the precise mixing system uses a mixing plant and an error-proof valve for its feed silo pipeline, and includes:

[0009] The silo body has a level meter installed on its upper outer wall, and a cleaning and discharging valve is arranged at the bottom center of the silo body. At the same time, the bottom outer wall and the top of the middle outer wall of the silo body are respectively connected with a feeding pipe and a feeding pipe. The lower end of the feeding pipe is connected to the external pipeline, and a feeding pump is arranged at the connection between the two. At the same time, a controller is also arranged on the outer wall of the silo body to control the opening and closing of the electrical components;

[0010] It also includes: an error-proofing valve installed at the through connection between the feeding pipe and the silo body, wherein the error-proofing valve includes a pre-storage cavity on the inner wall of the silo body, and the pre-storage cavity is connected to the feeding pipe;

[0011] A positioning cylinder is fixed to the top of the pre-storage chamber, a push rod is telescopically installed in the positioning cylinder, the end of the push rod is fixed to the upper end of the connecting rod, the lower end of the connecting rod is hinged to the top of the outer wall of the material sealing plate, a hydraulic telescopic rod is also installed between the connecting rod and the material sealing plate, a damping element is arranged on the inner wall of the outlet of the pre-storage chamber, and a pressure sensor is arranged in the damping element.

[0012] Moreover, the feeding pump adopts a screw pump, and the rotation of the auger drives the material in the feeding pipe to be transported in both ascending and descending directions.

[0013] Moreover, the pre-storage chamber is installed in conjunction with the feeding pipe, and the bottom inner wall of the pre-storage chamber is inclined downward toward the through interface of the feeding pipe, and the bottom of the pre-storage chamber is located outside the silo body. At the same time, the connection between the pre-storage chamber and the material sealing plate is a rectangular inner wall with a strip distribution.

[0014] Moreover, a sealing strip is provided at the outer edge of the material sealing plate, the material sealing plate and the pre-storage cavity form a radially fitting fit and an axially fitting sliding connection, the damping element on the inner wall of the pre-storage cavity is arranged in a right-angle "L"-shaped structure, and a damping extrusion arrangement is provided between the material sealing plate and the damping element.

[0015] Moreover, the connecting rod is arranged in an "L"-shaped structure, and the connecting rod, the material sealing plate and the hydraulic telescopic rod are all hingedly arranged, wherein the end of the output shaft of the hydraulic telescopic rod is also hingedly connected to a limit support, and the limit support is vertically slidably connected to the outer side wall of the material sealing plate;

[0016] An electromagnetic hydraulic regulator driven by the extension and retraction of the hydraulic telescopic rod is arranged on the connecting rod.

[0017] Furthermore, the push rod and the positioning tube form an axially distributed telescopic structure, and elastic parts are arranged at the telescopic parts of the two.

[0018] Moreover, an air cavity is fixed on the outer wall of the silo body just above the pre-storage cavity, a gas pressurizing device is arranged on the air cavity, a ventilation pipe is connected between the air cavity and the inside of the pre-storage cavity, and a gas one-way control component is arranged at the point where the ventilation pipe and the pre-storage cavity are connected.

[0019] Moreover, a rotating cylinder is rotatably installed on the inner wall of the air cavity, and a reciprocating screw rod is connected to the inner thread of the rotating cylinder. The reciprocating screw rod and the positioning cylinder form a coaxially distributed relative telescopic structure, and the reciprocating screw rod and the push rod end inside the positioning cylinder are connected to a magnetic base, and the two magnetic bases attract each other.

[0020] Moreover, a turbine blade is provided at the through-connection between the vent pipe and the air cavity, and mutually meshing bevel teeth are provided between the center axis of the turbine blade and the outer wall of the drum.

[0021] Moreover, the gas one-way control component and the ventilation pipe form a relatively telescopic structure that is fitted and sealed, a spring is installed between the two, and the gas one-way control component is arranged as a "T"-shaped internal hollow setting, and hollow holes are arranged on the back and the edge of the outer wall of the gas one-way control component, and the hollow holes on the edge of the outer wall are provided with barrier sheets, and the barrier sheets are elastically arranged to fit into the outer wall of the gas one-way control component.

[0022] Furthermore, the present invention provides a precise mixing control system suitable for large-scale pre-cooled concrete production, characterized in that it also includes the following modules:

[0023] Mixing plant unit, cementitious material tank unit, aggregate shed unit, vehicle receiving silo, air compressor room, refrigeration building; the incoming materials are transported to the aggregate shed unit through the vehicle receiving silo by a belt conveyor;

[0024] The materials in the aggregate shed unit are then transported to the silo of the mixing plant unit by a belt conveyor. The cementitious material tank unit includes a cement tank and a fly ash tank. The bottom of the cement tank and the fly ash tank are pneumatically transported to the mixing plant by a down-drawn silo pump.

[0025] The refrigeration building is equipped with a containerized air-cooling module, a refrigeration water module and an ice-making module, which are all connected to the silo of the mixing building to provide cold air, ice water and ice cubes for the mixing building.

[0026] The advantages and beneficial effects of the present invention are:

[0027] 1. The invention discloses a precise mixing control system suitable for large-scale precooling concrete production, which realizes the precooling treatment of large-scale concrete and effectively avoids the problem of wrong material when the material is transported through the inside of the pipeline when the material is transported through the silo pipeline.

[0028] 2. The present invention is a precise mixing control system suitable for large-scale pre-cooled concrete production. The material conveying of the feeding pump inside the feeding pipe is realized through the spiral auger structure of the screw pump. In combination with the pre-storage cavity of the anti-error valve component, the pre-storage cavity is used for temporary material storage when material conveying is realized. During the material storage process, the material sealing plate is pushed by pressure and the push rod and the connecting rod are guided to move, so as to prevent the expansion, explosion and damage of the pre-storage cavity due to material accumulation. At the same time, the pressure sensors in the material sealing plate and the damping element are used in combination to achieve the induction prompt effect during material conveying. When the telescopic state of the hydraulic telescopic rod is changed manually through the controller, the positioning effect of the material sealing plate is adjusted to achieve the material conveying effect from the silo pipeline to the inside of the silo.

[0029] 3. The present invention is a precise mixing control system suitable for large-scale pre-cooled concrete production. Through the controlled contraction of the hydraulic telescopic rod, the material sealing plate is unfolded so that the material can be introduced into the silo for storage. When the material transportation error is verified, the sealing effect of the material sealing plate can be used to prevent the wrong material from being transported from the pipeline to the silo.

[0030] 4. The present invention is a precise mixing control system suitable for large-scale pre-cooled concrete production, which is provided with an air cavity and a gas pressurizing component thereon. When the material temporarily stored in the pre-storage cavity is loaded, the gas is guided to flow, and the gas is first pressurized and introduced into the pre-storage cavity in one direction through the vent pipe, so that the material temporarily stored in the pre-storage cavity is reversely transported under the action of air pressure and a loading pump, so as to prevent the material from being continuously stored in the pre-storage cavity, resulting in mixing of material types due to subsequent loading.

[0031] 5. The present invention is a precise mixing control system suitable for large-scale pre-cooled concrete production. When the gas inside the ventilation pipe is circulating, the gas flow will drive the turbine blades to rotate. Under the rotational meshing drive of the bevel gear structure on the center axis of the turbine blade and the outer wall of the positioning tube, the reciprocating screw rod is telescopically moved in the positioning tube. The telescopic reciprocating screw rod and the magnetic positioning between the magnetic bases are utilized to make the push rod synchronously telescopic and drive the material sealing plate to move continuously, and act synchronously with the air pressure to reversely guide the material temporarily stored in the pre-storage chamber into the feeding tube, thereby achieving the effect of reverse material transportation and emptying the inside of the feeding tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the feeding pump of the present invention;

[0034] Figure 3 This is a schematic diagram of the front structure of the error-proof valve of the present invention;

[0035] Figure 4This is a schematic diagram of the structure of the error-proof valve of the present invention when viewed from above;

[0036] Figure 5 This is a schematic diagram of the internal structure of the air cavity of the present invention;

[0037] Figure 6 This is a schematic diagram of the internal front structure of the material sealing plate of the present invention;

[0038] Figure 7 This is a schematic diagram of the internal side structure of the material sealing plate of the present invention;

[0039] Figure 8 This is a schematic diagram of the installation structure of the reciprocating screw and the push rod of the present invention;

[0040] Fig. 9 This is a schematic diagram of the distribution structure of the gas one-way control component of the present invention;

[0041] Fig.10 This is a schematic diagram of the installation structure of the gas one-way control component of the present invention;

[0042] Fig.11 This is a schematic diagram of the explosion structure composed of the gas one-way control component and the barrier sheet of the present invention;

[0043] Fig.12 It is a schematic diagram of the system module of the present invention.

[0044] In the figure: 1. silo; 2. material level meter; 3. cleaning discharge valve; 4. feed pipe; 5. feed pipe; 6. feed pump; 7. controller; 8. error-proofing valve; 9. pre-storage chamber; 10. positioning cylinder; 11. push rod; 12. connecting rod; 13. material sealing plate; 14. hydraulic telescopic rod; 15. limit support; 16. damping element; 17. air cavity; 18. rotating drum; 19. reciprocating screw; 20. magnetic base; 21. ventilation pipe; 22. turbine blades; 23. gas one-way control component; 24. barrier sheet. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0046] Example 1: Please refer to Figure 1-Figure 8 The present invention provides a technical solution: a precise mixing control system suitable for large-scale pre-cooled concrete production, the precise mixing system uses a mixing plant and an error-proof valve of a feed silo pipeline, and comprises:

[0047] The silo body 1 has a material level meter 2 installed on its upper outer wall, and a cleaning discharge valve 3 is arranged at the bottom center of the silo body 1. At the same time, the bottom outer wall and the top of the middle outer wall of the silo body 1 are respectively connected with a down pipe 4 and a feed pipe 5. The lower end of the feed pipe 5 is connected to the external pipeline, and a feed pump 6 is arranged at the connection between the two. At the same time, a controller 7 is also arranged on the outer wall of the silo body 1 for controlling the opening and closing of the electrical components. In the above technical scheme, the existing silo body 1 and the silo pipeline thereon are disclosed to realize the internal feeding of the silo body 1 and the material level monitoring after the internal feeding of the silo body 1;

[0048] It also includes: an error-proofing valve 8, which is installed at the through connection between the feeding pipe 5 and the silo body 1, wherein the error-proofing valve 8 includes a pre-storage chamber 9 on the inner wall of the silo body 1, and the pre-storage chamber 9 is connected to the feeding pipe 5; a positioning cylinder 10, which is fixed to the top of the pre-storage chamber 9, and a push rod 11 is telescopically installed in the positioning cylinder 10, and the end of the push rod 11 is fixed to the upper end of the connecting rod 12, and the lower end of the connecting rod 12 is hinged to the top of the outer wall of the material sealing plate 13, and a hydraulic telescopic rod 14 is also installed between the connecting rod 12 and the material sealing plate 13, and a damping member 16 is provided on the inner wall of the outlet of the pre-storage chamber 9, and a pressure sensor is provided in the damping member 16;

[0049] like Figure 3-Figure 6 As shown, the pre-storage chamber 9 is used for temporary storage of the material delivered to the silo body 1 by the feeding pipe 5. The material is not directly delivered to the silo body 1. The type of the material is verified in the pre-storage chamber 9. When the verification is correct, the material in the pre-storage chamber 9 is introduced into the silo body 1. When the material is wrongly loaded, the reverse delivery and reflux of the material is realized through the anti-error valve 8.

[0050] In the above scheme, the feeding pump 6 adopts a screw pump, and the rotation of the auger drives the material in the feeding pipe 5 to be transported in both directions of ascending and descending; the pre-storage chamber 9 is installed through the feeding pipe 5, and the bottom inner wall of the pre-storage chamber 9 is inclined downward toward the through interface of the feeding pipe 5, and the bottom of the pre-storage chamber 9 is located outside the silo body 1, and the connection between the pre-storage chamber 9 and the material sealing plate 13 is a rectangular inner wall arrangement with a strip distribution; the outer edge of the material sealing plate 13 is provided with a sealing strip, and the material sealing plate 13 and the pre-storage chamber 9 form a close radial clamping and an axially close sliding connection, and the damping member 16 on the inner wall of the pre-storage chamber 9 is straight An "L"-shaped structure is provided at the corner, and a damping extrusion arrangement is provided between the material sealing plate 13 and the damping member 16; the connecting rod 12 is provided in an "L"-shaped structure, and the connecting rod 12, the material sealing plate 13 and the hydraulic telescopic rod 14 are all hingedly provided, wherein the end of the output shaft of the hydraulic telescopic rod 14 is also hingedly provided with a limit support 15, and the limit support 15 is vertically slidably connected with the outer wall of the material sealing plate 13; an electromagnetic hydraulic regulator driven by the telescopic drive of the hydraulic telescopic rod 14 is provided on the connecting rod 12, and the push rod 11 and the positioning cylinder 10 constitute an axially distributed telescopic structure, and elastic members are provided at the telescopic positions of the two;

[0051] In the above scheme, when the pre-storage chamber 9 is used to temporarily store materials, the amount of materials in the pre-storage chamber 9 increases. Under the action of the materials and pressure, the material sealing plate 13 moves and changes its position in the pre-storage chamber 9 along the axial direction of the push rod 11, thereby releasing the pressure inside the pre-storage chamber 9 to prevent the internal pressure from being overloaded and bursting. When the material sealing plate 13 continues to move onto the damping member 16 and presses the pressure sensor in the damping member 16, the material introduced into the pre-storage chamber 9 stops being transported, and the user verifies the accuracy of the loading. After the accuracy is verified, the controller 7 is used to control the corresponding electrical components to start, such as using electromagnetic hydraulics. The regulator controls the contraction of the hydraulic telescopic rod 14, causing the hydraulic telescopic rod 14 to contract. Due to the extension of the hydraulic telescopic rod 14, the material sealing plate 13 is no longer provided with oblique support and position limiting. At this time, the material sealing plate 13 can rotate around the hinge point with the connecting rod 12 under the action of pressure, so that the material sealing plate 13 rotates and expands and no longer blocks the inside of the pre-storage chamber 9. At this time, the material can be continuously transported to the silo body 1 through the pre-storage chamber 9; and when the above-mentioned materials are verified and it is found that the wrong material is loaded, the anti-error valve 8 can be used as a component to realize the reverse conveying and reflux of the material to prevent the material from accumulating in the pre-storage chamber 9 and the loading pipe 5.

[0052] Embodiment 2: Based on Embodiment 1, the following Figure 5-Figure 11 As shown, the present invention also discloses a material reverse conveying reflux component used by the error-proofing valve 8, and its specific contents are as follows: an air cavity 17 is fixed to the outer wall of the silo body 1 just above the pre-storage cavity 9, and a gas pressurizing device is arranged on the air cavity 17, and a vent pipe 21 is connected between the air cavity 17 and the inside of the pre-storage cavity 9, and a gas one-way control component 23 is arranged at the point where the vent pipe 21 and the pre-storage cavity 9 pass through; a rotating cylinder 18 is also rotatably installed on the inner wall of the air cavity 17, and a reciprocating screw rod 19 is connected to the rotating cylinder 18 with an internal thread, and the reciprocating screw rod 19 and the positioning cylinder 10 form a coaxially distributed relative telescopic structure, and the reciprocating screw rod 19 and the end of the push rod 11 in the positioning cylinder 10 are both connected to a magnetic The two magnetic bases 20 are attracted to each other; a turbine blade 22 is also provided at the through connection between the vent pipe 21 and the air cavity 17, and mutually meshing bevel teeth are provided between the central axis of the turbine blade 22 and the outer wall of the rotating cylinder 18; the gas one-way control component 23 and the vent pipe 21 form a relatively telescopic structure that fits and seals, a spring is installed between the two, and the gas one-way control component 23 is set as a "T"-shaped inner hollow setting, and the back and outer side wall edges of the gas one-way control component 23 are both provided with hollow holes, and the hollow holes on the outer side wall edge are provided with a barrier sheet 24, and the barrier sheet 24 is elastically set to fit the outer wall of the gas one-way control component 23;

[0053] In the above technical solution, the pressurized delivery and diversion of gas is realized by using the air cavity 17 and the gas pressurizing equipment thereon. First, when the gas is flowing, it can be driven by the mutual transmission between the bevel teeth, so that the turbine blades 22 are driven by the airflow to rotate and drive the rotating drum 18 to rotate, so that the reciprocating screw 19 penetrated by the internal thread of the rotating drum 18 has a tendency to rotate synchronously, and the reciprocating screw 19 and the positioning drum 10 are axially fitted and slidable, and radially engaged, so that when the rotating drum 18 rotates, the reciprocating screw 19 reciprocates and telescopes in the rotating drum 18 and the positioning drum 10. During the movement, due to the reciprocating movement inside the positioning drum 10, The magnetic positioning between the screw rod 19 and the magnetic base 20 at the end of the push rod 11 allows the reciprocating screw rod 19 to drive the push rod 11 to move synchronously telescopically left and right, thereby driving the material sealing plate 13 inside the pre-storage chamber 9 to move reciprocatingly and telescopically, and the material inside the pre-storage chamber 9 is pushed by the material sealing plate 13 to flow back and be reversely transported to the feeding pipe 5; in this process, the pressurized airflow inside the air cavity 17 passes through the ventilation pipe 21 and the gas one-way control component 23 to realize the one-way pressurization of the gas into the pre-storage chamber 9, and works together with the material sealing plate 13 to realize the reflux and reverse transportation of the material in the pre-storage chamber 9 to the feeding pipe 5.

[0054] Embodiment 3: The present invention also provides a precise mixing control system suitable for large-scale pre-cooled concrete production, and its specific modules are as follows:

[0055] It includes a mixing building unit, a cementitious material tank unit, an aggregate storage shed unit, a car receiving silo, an air compressor room, and a refrigeration building; the incoming materials are transported to the aggregate storage shed unit by a belt conveyor through the car receiving silo; the materials in the aggregate storage shed unit are then transported to the silo of the mixing building unit by a belt conveyor; the cementitious material tank unit includes a cement tank and a fly ash tank, and the bottom of the cement tank and the fly ash tank are pneumatically transported to the mixing building by a down-drawn silo pump; the refrigeration building is equipped with a container-type air cooling module, a cooling water module, and an ice-making module, which are all connected to the silo of the mixing building to provide cold air, ice water, and ice cubes for the mixing building;

[0056] A large-scale mixing plant precooling method is also disclosed, and the precooling method comprises the following steps:

[0057] 1) Primary air cooling:

[0058] The primary air cooling system consists of a containerized air cooling module, a mixing plant, an air cooler, and an air circulation system. The containerized air cooling module supplies liquid to the air cooler to produce cold air, which enters the silo of the mixing plant. The three-graded concrete is mixed normally, and the coarse aggregate is air-cooled in the silo of the mixing plant. The final temperature of large, medium, and small stones drops to 9°C to 10°C.

[0059] 2) Chilled water cooling;

[0060] The cooling water module provides chilled water for the mixing plant. The cooling water of the mixing plant is equipped with a cooling capacity (design condition) of 2x640kW. The required cooling water volume at 5°C is calculated to be 2x22mh. Considering the temperature rise during transportation, 4°C cold water is produced. The reserved cooling water of the mixing plant is equipped with a cooling capacity (design condition) of 260kW. The required cooling water volume at 5°C is calculated to be 8mh. Considering the temperature rise during transportation, 4°C cold water is produced. The chilled water enters the mixing plant to cool and mix the materials in the feeding area, cooling area, and storage area.

[0061] 3) Flake ice cooling:

[0062] The ice-making module provides flake ice for the mixing plant. The mixing plant is equipped with a cooling capacity of 2x1650kW (design working condition). The mixing station reserves a cooling capacity of 690kW (design working condition). 45-50kg / m3 of flake ice is added to the mixing plant, and the concrete outlet temperature is controlled at 16°C.

[0063] Aggregate air cooling is designed according to the pre-cooling procedure, and the air cooling refrigeration capacity, cooling time, cooling zone height, air volume, air pressure and air cooler area are calculated; the mixing plant air cooling is equipped with a cooling capacity of 2x3518kW, and the design working conditions are to=-15℃, t=40℃; the reserved mixing station air cooling is equipped with a cooling capacity of 1290kW, and the design working conditions are t=-11℃, tk=40℃; the silos of the mixing plant are divided into a feeding area, a cooling area and a storage area from top to bottom, and the air cooler, centrifugal blower and each silo are configured one-to-one to form their own independent cold air circulation system; the cold air is fed into the bottom of the cooling area, passes through the aggregate layer in the area against the flow direction of the aggregate, absorbs heat and heats up, and then comes out from the upper part of the cooling area to enter the air cooler for cooling. The cooled cold air is pressed into the air cooling silo by the centrifugal blower for the next cooling cycle. The aggregate is continuously circulated and cooled by the cold air, and enters the storage area after the temperature drops to the required final temperature.

[0064] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A precision mixing control system suitable for large-scale pre-cooled concrete production, the precision mixing system uses a mixing plant and an error-proof valve for its feed silo pipeline, which includes: A material silo body (1) is provided with a material level meter (2) on its upper outer wall, and a cleaning discharge valve (3) is provided at the bottom center of the material silo body (1). A material discharge pipe (4) and a material feed pipe (5) are respectively connected to the bottom outer wall and the top of the middle outer wall of the material silo body (1). The lower end of the material feed pipe (5) is connected to an external pipeline, and a material feed pump (6) is provided at the connection between the two. A controller (7) is also provided on the outer wall of the material silo body (1) for controlling the opening and closing of electrical components. It is characterized by further comprising: an error-proofing valve (8) installed at the through-connection between the feeding pipe (5) and the silo body (1), wherein the error-proofing valve (8) comprises a pre-storage cavity (9) on the inner wall of the silo body (1), and the pre-storage cavity (9) is in communication with the feeding pipe (5); A positioning cylinder (10) is fixed to the top of the pre-storage chamber (9), and a push rod (11) is telescopically installed in the positioning cylinder (10). The end of the push rod (11) is fixed to the upper end of the connecting rod (12), and the lower end of the connecting rod (12) is hinged to the top of the outer wall of the material sealing plate (13). A hydraulic telescopic rod (14) is also installed between the connecting rod (12) and the material sealing plate (13). A damping member (16) is arranged on the inner wall of the outlet of the pre-storage chamber (9), and a pressure sensor is arranged in the damping member (16).

2. According to claim 1, a precise mixing control system suitable for large-scale precooling concrete production is characterized in that: The feeding pump (6) is a screw pump, which utilizes the rotation of the auger to drive the material in the feeding pipe (5) to be transported in both ascending and descending directions.

3. According to claim 1, a precise mixing control system suitable for large-scale precooled concrete production is characterized in that: The pre-storage chamber (9) is installed in a through-connection with the feeding tube (5), and the bottom inner wall of the pre-storage chamber (9) is tilted downwardly toward the through-connection of the feeding tube (5), and the bottom of the pre-storage chamber (9) is located outside the silo body (1), and the connection between the pre-storage chamber (9) and the material sealing plate (13) is a rectangular inner wall with a strip distribution.

4. According to claim 3, a precise mixing control system suitable for large-scale pre-cooled concrete production is characterized in that: The outer edge of the material sealing plate (13) is provided with a sealing strip, the material sealing plate (13) and the pre-storage chamber (9) form a close radial snap fit and an axial close sliding connection, the damping member (16) on the inner wall of the pre-storage chamber (9) is arranged in a right-angle "L"-shaped structure, and a damping extrusion arrangement is provided between the material sealing plate (13) and the damping member (16).

5. A precise mixing control system suitable for large-scale precooled concrete production according to any one of claims 1 to 4, characterized in that: The connecting rod (12) is arranged in an "L"-shaped structure, and the connecting rod (12) and the material sealing plate (13) and the hydraulic telescopic rod (14) are all hingedly arranged, wherein the end of the output shaft of the hydraulic telescopic rod (14) is also hingedly connected to a limit support (15), and the limit support (15) is vertically slidably connected to the outer side wall of the material sealing plate (13); An electromagnetic hydraulic regulator for telescopically driving the hydraulic telescopic rod (14) is arranged on the connecting rod (12).

6. The precise mixing control system suitable for large-scale precooled concrete production according to claim 5, characterized in that: The push rod (11) and the positioning cylinder (10) form an axially distributed telescopic structure, and elastic parts are provided at the telescopic parts of the two.

7. A precise mixing control system suitable for large-scale precooled concrete production according to claim 1 or 6, characterized in that: An air cavity (17) is fixed on the outer wall of the silo body (1) directly above the pre-storage cavity (9), a gas pressurizing device is arranged on the air cavity (17), a vent pipe (21) is connected between the air cavity (17) and the inside of the pre-storage cavity (9), and a gas one-way control component (23) is arranged at the point where the vent pipe (21) and the pre-storage cavity (9) are connected.

8. The precise mixing control system suitable for large-scale precooled concrete production according to claim 7, characterized in that: A rotating cylinder (18) is rotatably mounted on the inner wall of the air cavity (17), and a reciprocating screw rod (19) is connected to the rotating cylinder (18) through an internal thread. The reciprocating screw rod (19) and the positioning cylinder (10) form a coaxially distributed relative telescopic structure, and the ends of the reciprocating screw rod (19) and the push rod (11) inside the positioning cylinder (10) are both connected to a magnetic base (20), and the two magnetic bases (20) attract each other.

9. The precise mixing control system suitable for large-scale precooled concrete production according to claim 7, characterized in that: A turbine blade (22) is also provided at the through-connection between the vent pipe (21) and the air cavity (17), and mutually meshing bevel teeth are provided between the central axis of the turbine blade (22) and the outer wall of the rotating drum (18). The gas one-way control component (23) and the vent pipe (21) form a relatively telescopic structure that is fitted and sealed, and a spring is installed between the two. The gas one-way control component (23) is arranged as a "T"-shaped inner hollow arrangement, and hollow holes are provided on the back and outer wall edge of the gas one-way control component (23). The hollow holes on the outer wall edge are provided with a barrier sheet (24), and the barrier sheet (24) is elastically arranged to be in contact with the outer wall of the gas one-way control component (23).

10. The precise mixing control system suitable for large-scale precooled concrete production according to claim 1, characterized in that: Also includes the following modules: Mixing plant unit, cementitious material tank unit, aggregate shed unit, vehicle receiving silo, air compressor room, refrigeration building; the incoming materials are transported to the aggregate shed unit through the vehicle receiving silo by a belt conveyor; The materials in the aggregate shed unit are then transported to the silo of the mixing plant unit by a belt conveyor. The cementitious material tank unit includes a cement tank and a fly ash tank. The bottom of the cement tank and the fly ash tank are pneumatically transported to the mixing plant by a down-drawn silo pump. The refrigeration building is equipped with a containerized air-cooling module, a refrigeration water module and an ice-making module, which are all connected to the silo of the mixing building to provide cold air, ice water and ice cubes for the mixing building.

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