A concrete mortar proportioning feeding device

Abstract

The present application relates to a concrete mortar proportioning feeding device, which belongs to the field of concrete processing, including a material storage system, a material weighing system, a material conveying system, a mixing host and a control system. The material storage system is connected to the material weighing system, and the material conveying system includes a conveyor belt group. The material storage device includes a primary material storage bin and a secondary material storage bin. The conveyor belt group connects the primary material storage bin and the secondary material storage bin, and a material heating component is abutted on the surface of the conveyor belt group. The control system is electrically connected to the material conveying system, the material weighing system, the material storage system, and the mixing host, respectively, to control the operation of each system. The present application achieves the beneficial effect of reducing the proportion of water weight of the material put into the material weighing system by setting a material heating component, thereby minimizing the influence of water content on concrete strength.

Description

Technical Field

[0001] The present application relates to the field of concrete processing, and in particular to a concrete mortar proportioning feeding device. Background Art

[0002] The concrete mortar proportioning feeding device is an important part of the concrete mixing plant. The concrete mixing plant is a combined device used for centralized mixing of concrete, also known as a concrete prefabrication plant. It is mainly composed of five systems, namely, the mixing host, the material weighing system, the material conveying system, the material storage system and the control system, and other ancillary facilities. Among them, the material weighing system and the material conveying system are collectively referred to as the feeding device, and the storage bin in the material storage system is sometimes used in conjunction with the weighing system, so it can also be incorporated into the feeding device.

[0003] The material storage system usually includes three main parts: an open-air material storage yard, an open-air storage silo and a sealed powder storage tower. Powdered materials such as cement and fly ash are difficult to store, easily cause dust and are difficult to separate after being contaminated, so they are stored in powder storage towers. Aggregates such as sand and gravel are transported by trucks and loaded obliquely to the open-air storage yard, and then loaded into the storage silo by loaders to reduce the difficulty of transportation.

[0004] In the above-mentioned prior art, aggregates piled in open-air material storage yards will become damp due to the influence of weather, thereby increasing the moisture content in the aggregates. The finer the aggregate gradation, the more serious the influence of moisture content. Especially in southern my country, the climate is humid and the precipitation is abundant. The moisture content in fine aggregates is easy to exceed the standard. Due to the stacking characteristics of fine aggregates, the moisture content in aggregates is different everywhere. The drying method is not real-time to measure the moisture content of aggregates. The moisture content of aggregates will also change while waiting for the measurement results, resulting in a decrease in the amount of fine aggregates, affecting the strength of concrete. Summary of the invention

[0005] In order to solve the problem that the water content in aggregate is high and easily affects the strength of concrete, the present application provides a concrete mortar proportioning feeding device.

[0006] A concrete mortar proportioning feeding device comprises a material storage system, a material weighing system, a material conveying system, a mixing host and a control system, wherein the material storage system is connected to the material weighing system, the material conveying system comprises a conveying belt group, the material storage device comprises a primary material storage bin and a secondary material storage bin, the conveying belt group connects the primary material storage bin and the secondary material storage bin, and a material heating component is arranged on the surface of the conveying belt group;

[0007] The control system is electrically connected to the material conveying system, the material weighing system, the material storage system and the mixing host to control the operation of each system.

[0008] By adopting the above technical solution, the material heating component heats and dries the material during the transportation of the material, thereby minimizing condensation on the surface of the material and accelerating the evaporation of water in the material, reducing the water content in the material, thereby reducing the proportion of water weight when the material is put into the material weighing system, thereby minimizing the impact of water content on concrete strength.

[0009] Optionally, the material heating assembly includes a heating device and a heating rod, the heating device is arranged on the side of the conveyor belt group, the length extension direction of the heating rod is perpendicular to the movement direction of the conveyor belt group, and the end of the heating rod is rotatably connected to the heating device.

[0010] Optionally, a heat conducting sheet is provided on the heating rod.

[0011] By adopting the above technical solution, the heating range of the heating rod can be extended without increasing the diameter of the heating rod. The heating range can be extended by using a relatively small volume increase, the power requirement for the heating wire is reduced, and energy is efficiently utilized.

[0012] Optionally, the heat conducting sheet includes a supporting layer and a heat conducting layer, the supporting layer is arranged in the heat conducting layer and covered by the heat conducting layer, the heat conducting layer is fixedly connected to the surface of the heating rod, and the length extension direction of the heat conducting sheet is the radial direction of the heating rod;

[0013] The heat-conducting layer is coated outside the supporting layer to guide the heat generated by the heating rod and extend the heat range of the heating rod. The heat-conducting layer is made of soft heat-conducting material, the supporting layer is made of elastic material, and the heat-conducting sheet is in contact with the surface of the conveyor belt group.

[0014] By adopting the above technical solution, while ensuring that the heat conductive sheet can contact with the aggregate being transported on the surface of the conveyor belt group, due to the double-layer setting of the heat conductive sheet itself, the sand and gravel with small particle size can be closely fitted through the soft heat conductive layer, and the heat conductive sheet itself will deform and will not hinder the passage of the sand and gravel;

[0015] For aggregates such as gravel, the deformation ability given by the elastic material can be used to maintain the fit with the gravel and properly turn the gravel;

[0016] At the same time, the heat conductive sheet with a certain deformation ability will not conflict with the aggregate due to its own rotation, thus avoiding the aggregate being stuck and unable to be transported due to the heat conductive sheet.

[0017] Optionally, the heating rod includes a heating shell and a heating wire, the heating shell is sleeved outside the heating wire, the heating wire is fixedly connected to the heating device, the heating shell is rotatably connected to the heating device, and the heat conducting sheet is fixedly connected to the outer surface of the heating shell.

[0018] By adopting the above technical solution, the heating shell rotates while the heating wire does not rotate, thereby reducing the difficulty of connecting the heating wire and the heating device. The rotation of the heating shell can ensure the smooth transportation of materials on the conveyor belt.

[0019] Optionally, the transmission belt assembly includes a transmission shaft and a transmission belt, a transmission belt is provided between the transmission shaft and the heating shell and the transmission is transmitted through the transmission belt, and the heat conducting sheet abuts against the surface of the transmission belt.

[0020] Optionally, the material weighing system includes a material weighing bucket connected to the bottom of the secondary material storage bin. A precise material discharge component is provided in the secondary material storage bin, and the precise material discharge component is used to precisely control the discharge of materials from the secondary material storage bin into the material weighing bucket.

[0021] Through the above technical solution, in the prior art, the material storage bin uses gravity to send the material inside it into the material measuring hopper, and the start and end of the conveying process are realized by an electric bin door, and the opening and closing of the electric bin door cannot be instantaneous. At the same time, the material measuring hopper generally uses a pressure sensor as a measurement standard. Therefore, when the pressure sensor sends a signal, the material storage bin does not stop the material feeding process into the material measuring hopper immediately, but only stops when the electric bin door is closed. The longer the closing time of the electric bin door and the larger the opening at the bottom of the material storage bin, the greater the measurement error.

[0022] The precise material discharge component is set up to solve the above problems and reduce the error of material measurement.

[0023] Optionally, the precise material discharge component includes a bin door and a material discharge conveyor belt, the secondary material storage bin includes a storage chamber and a feeding port, an opening is provided at the bottom of the storage chamber, the bin door covers the opening and can slide along the opening;

[0024] The feeding port is arranged below the storage chamber, the feeding port is connected with the storage chamber through an opening, and the unloading conveyor belt is connected to the side wall of the feeding port;

[0025] Two unloading conveyor belts are arranged obliquely and symmetrically, the ends of the two unloading conveyor belts close to each other are low, and the ends of the two unloading conveyor belts away from each other are high, and can receive the materials discharged from the opening.

[0026] Optionally, the outer cover of the conveyor belt assembly is provided with a windproof shell.

[0027] By adopting the above technical solution, in most cases the conveyor belt group is set up in the open air. In the northwest region of my country, the wind is strong and the wind speed is high. The setting of the windproof shell can help the conveyor belt group effectively resist the influence of bad weather, and at the same time also protect the material heating component covered therein.

[0028] Optionally, the outer jacket of the mixing main unit is provided with a heat-insulating interlayer, a water outlet and a water inlet are provided in the heat-insulating interlayer, and a heating system is also provided in the heat-insulating interlayer;

[0029] A water measuring bucket is connected above the mixing main unit, and the water measuring bucket is communicated with the thermal insulation interlayer, and the water in the thermal insulation interlayer can be raised to the water measuring bucket through a water pump.

[0030] By adopting the above technical solution, in some southern regions of my country, due to climatic reasons, large-scale heating lines are often not installed, and the temperature is below 5°C from time to time. However, the mixing temperature of concrete is generally not suitable to be lower than 10°C, so it is necessary to heat the water or aggregate during mixing.

[0031] In this device, since the aggregate has been heated in the aggregate heating device, a thermal insulation interlayer is set up, water is heated in the thermal insulation interlayer, and the water is pumped into the water metering hopper to ensure that the concrete can obtain a relatively suitable mixing temperature.

[0032] In summary, the present application includes at least one of the following beneficial effects:

[0033] 1. By setting up the material heating component, the proportion of water weight in the material put into the material weighing system is reduced, thereby minimizing the impact of water content on concrete strength.

[0034] 2. By setting up a precise material discharge component, the beneficial effect of reducing the error in the material weighing bucket caused by the material conveying not being stopped in real time is achieved.

[0035] 3. By setting up a thermal insulation interlayer, we can try to ensure that the concrete can reach a relatively suitable mixing temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0037] Figure 2 It is a schematic diagram of a material conveying system and a material heating system according to an embodiment of the present application.

[0038] Figure 3 This is a schematic diagram of the interior of the heating rod of the embodiment of the present application.

[0039] Figure 4 It is a schematic diagram of the interior of the secondary material storage bin of an embodiment of the present application.

[0040] Figure 5 It is a schematic diagram of the structure of the thermal insulation interlayer of an embodiment of the present application.

[0041] Figure numerals: 1. Primary material storage bin; 2. Secondary material storage bin; 21. Storage chamber; 22. Feeding port; 3. Conveyor belt assembly; 31. Drive shaft; 32. Conveyor belt; 4. Material weighing bucket; 5. Pressure sensor; 6. Waiting hopper; 7. Material heating assembly; 71. Heating device; 72. Heating rod; 721. Heating shell; 722. Heating wire; 723. Insulating powder; 8. Heat conducting sheet; 81. Support layer; 82. Heat conducting layer; 9. Windproof shell; 10. Bin door; 11. Discharge conveyor belt; 12. Block; 13. Insulating interlayer; 14. Water outlet; 15. Water inlet; 16. Heating system; 17. Water metering bucket; 18. Mixing main unit; 19. Drive belt; 20. Water pump. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-5 This application is described in further detail.

[0043] The embodiment of the present application discloses a concrete mortar proportioning feeding device.

[0044] Reference Figure 1 A concrete mortar proportioning feeding device includes a control system, a material storage system, a material conveying system, a material weighing system, and a mixing main machine 18.

[0045] The control system is electrically connected to the material storage system, the material weighing system, the material conveying system and the mixing host 18 respectively, and adopts a remote centralized one-machine dual-control technology to control the work of each part of the device.

[0046] Reference Figure 1 The material storage system includes a primary material storage bin 1 and a secondary material storage bin 2, and the material conveying system includes a conveyor belt group 3. The primary material storage bin 1 is connected to the secondary material storage bin 2 through the conveyor belt group 3, and the materials stored in the primary material storage bin 1 can be conveyed to the secondary material storage bin 2. In terms of spatial position relationship, with the ground as the reference system, the setting height of the primary material storage bin 1 is lower than the setting height of the secondary material storage bin 2. Because the primary material storage bin 1 mainly receives materials carried by loaders, the more open the setting site is and the closer the setting position is to the ground, the lower the transportation difficulty is;

[0047] Because there is a height difference between the primary material storage bin 1 and the secondary material storage bin 2, the conveyor belt group 3 also needs to be set at an angle. The secondary material storage bin 2 serves as a transition component for continuous mixing of concrete. The material weighing system includes a material weighing bucket 4, which is connected to the bottom of the secondary material storage bin 2. A pressure sensor 5 is provided in the material weighing bucket 4 to measure the weight of the material in the material weighing bucket 4, and the pressure sensor 5 is connected to the control system signal. A waiting hopper 6 is provided below the material weighing bucket 4, and the mixing host 18 is connected below the waiting hopper 6.

[0048] When the material transported by the secondary material storage bin 2 to the material weighing system reaches the weight required for one mixing, the secondary material storage bin 2 stops feeding the material weighing hopper 4, and the material weighing hopper 4 starts feeding the material to the waiting hopper 6. During this process, the secondary material storage bin 2 is still receiving the material transported by the conveyor belt group 3. Therefore, when the material weighing hopper 4 completes feeding the material to the waiting hopper 6, the secondary material storage bin 2 can immediately refill the waiting hopper 6 to ensure the continuity of the mixing of the concrete in the mixing main unit 18.

[0049] Reference Figure 2 The conveyor belt group 3 includes a transmission shaft 31 and a conveyor belt 32. The surface of the conveyor belt 32 is abutted with a material heating component 7. The material heating component 7 heats the material during the material transportation process of the conveyor belt 32 to reduce the water content in the material, thereby reducing the proportion of water weight when the material is put into the material weighing bucket 4. Further, the error caused by the moisture content of the material during measurement is reduced, and the influence of the moisture content on the strength of the concrete is reduced.

[0050] Reference Figure 2 The material heating assembly 7 includes a heating device 71 and a heating rod 72. In the present embodiment, the heating device 71 is a power supply device for inserting the heating rod 72. In other embodiments, the heating rod 72 can be used only as an extended heat-conducting rod.

[0051] Reference Figure 2 and Figure 3 The heating device 71 is arranged on the side of the conveyor belt group 3, the length extension direction of the heating rod 72 is perpendicular to the movement direction of the conveyor belt group 3, the heating rod 72 includes a heating shell 721 and a heating wire 722, and the heating wire 722 is fixedly connected to the heating device 71 to facilitate the power supply relationship between the heating device 71 and the heating wire 722;

[0052] Reference Figure 2 and Figure 3 The heating shell 721 is sleeved outside the heating wire 722 and the heating shell 721 is rotatably connected to the heating device 71. A heat conductive sheet 8 is fixedly connected to the rod on the outer surface of the heating shell 721. A plurality of heat conductive sheets 8 are arranged along the axial direction of the surface of the heating shell 721, and a gap is left between two adjacent heat sinks. A transmission belt 19 is arranged between the transmission shaft 31 and the heating shell 721 and is transmitted through the transmission belt 19 to realize the use of the power of the transmission belt 19 to drive the rotation of the heating rod 72, so that the heat conductive sheet 8 on the heating rod 72 turns the material on the conveyor belt 32, and the heat conductive sheet 8 will also heat the material to achieve the purpose of efficient drying.

[0053] Reference Figure 2 and Figure 3The heat conducting sheet 8 includes a support layer 81 and a heat conducting layer 82. In this embodiment, the support layer 81 is made of hard rubber. The support layer 81 is fixedly connected to the surface of the heating rod 72 and the length extension direction of the support layer 81 is the radial direction of the heating rod 72. The support layer 81 enables the heat conducting sheet 8 to undergo elastic deformation to avoid the heat conducting sheet 8 and the material from getting stuck with each other during rotation, thereby reducing the material transportation efficiency.

[0054] Reference Figure 2 and Figure 3 In the present embodiment, the heat-conducting layer 82 is made of heat-conducting silicone, which is coated on the outside of the supporting layer 81 and penetrates into the heating shell 721. The heat-conducting layer 82 and the heating wire 722 are filled with insulating powder 723 to facilitate heat transfer between the heat-conducting layer 82 and the heating wire 722, guide the heat generated by the heating rod 72 and extend the heating range of the heating rod 72.

[0055] Reference Figure 2 The outer cover of the conveyor belt group 3 is provided with a windproof shell 9 to prevent the part of the conveyor belt group 3 exposed to the open air from being affected by bad weather and causing the material transported on the conveyor belt group 3 to be contaminated, and it can also protect the material heating component 7 set on the conveyor belt group.

[0056] Reference Figure 4 The secondary material storage bin 2 includes a storage chamber 21 and a feeding port 22. A precise material discharge assembly is arranged in the feeding port 22. The precise material discharge assembly includes a bin door 10 and a material discharge conveyor belt 11. An opening is provided at the bottom of the storage chamber 21. The bin door 10 covers the opening. The bin door 10 is driven by a motor and can slide along the opening. The sliding range is from completely blocking the opening to completely disengaging from the blocking relationship with the opening.

[0057] Reference Figure 4 The feeding port 22 is arranged below the storage chamber 21, and the feeding port 22 is connected with the storage chamber 21 through an opening. The discharge conveyor belt 11 is connected to the side wall of the feeding port 22, and two discharge conveyor belts 11 are arranged obliquely and symmetrically. The ends of the two discharge conveyor belts 11 close to each other are low, and the ends of the two discharge conveyor belts 11 away from each other are high, and can receive the materials unloaded from the opening. A stopper 12 is arranged between the two discharge conveyor belts 11 to prevent the materials from escaping from the gap between the two discharge conveyor belts 11.

[0058] Reference Figure 1 and Figure 4When the material delivered by the secondary material storage bin 2 to the material weighing hopper 4 reaches the weight required for one mixing, the gravity sensor in the material hopper sends a signal to the control system, and the control system controls the bin door 10 at the opening to block the opening. At the same time, the two unloading conveyor belts 11 stop in a very short time, so that the material unloaded during the closing process of the bin door 10 accumulates on the unloading conveyor belts 11 and does not enter the material weighing hopper 4, thereby reducing the difference between the actual loading amount of the material weighing hopper 4 and the measured value.

[0059] Reference Figure 5 The outer jacket of the mixing main unit 18 is provided with a heat-insulating interlayer 13, the heat-insulating interlayer 13 is provided with a water outlet 14 and a water inlet 15, and the heat-insulating interlayer 13 is also provided with a heating system 16. In this embodiment, the heating system 16 is a heating ring surrounding and fixedly connected to the inner layer of the heat-insulating interlayer 13;

[0060] When mixing concrete in cold weather, it is necessary to ensure that the concrete has a suitable mixing temperature. Therefore, water is injected into the thermal insulation interlayer 13 before mixing, and heated by the heating system 16, and the heat of the water is used to ensure the mixing temperature of the concrete;

[0061] Reference Figure 1 and Figure 5 A water measuring bucket 17 is connected to the mixing main machine 18 through a water pipe to measure the weight of the water.

[0062] The water measuring hopper 17 is connected above the mixing main unit 18 , and the water measuring hopper 17 is connected to the thermal insulation interlayer 13 through a water pipe connected to its side, so that the water in the thermal insulation interlayer 13 can rise to the water measuring hopper 17 through the water pump 20 .

[0063] In the absence of temperature monitoring, the temperature of the water body is generally confirmed by whether it is boiling. However, in the mixing of concrete, 100°C water is generally not used for mixing. Therefore, before the water in the water metering bucket 17 enters, cold water is first injected into the thermal insulation interlayer 13. This can absorb the heat of the water body when the boiling water enters the mixing main unit 18 to lower the water temperature, and reduce heat loss, thereby reducing the energy consumption when heating the water body next time, saving energy and reducing emissions.

[0064] The specific implementation principle of the embodiment of the present application is as follows: the primary material storage bin 1 is arranged near the open-air stockpile yard to facilitate the transportation work of the loader;

[0065] The loader piles the materials in the primary material storage bin 1. When the primary material storage bin 1 receives the working signal from the control system, the primary material storage bin 1 evenly discharges the materials to the conveyor belt group 3 below, so that the materials can be evenly laid on the conveyor belt group 3 to increase the contact area between the materials and the material heating component 7.

[0066] When the material passes through the material heating assembly 7, the heating rod 72 rotates under the drive shaft 31, so that the heat conducting sheet 8 stirs and stirs the material, thereby improving the effect of heating and drying the material, thereby reducing the water content in the material, further improving the accuracy of the water content when mixing the concrete, and effectively ensuring the expected performance of the concrete;

[0067] When the material delivered from the secondary material storage bin to the material hopper reaches the weight required for a single mixing, the gravity sensor in the material hopper sends a signal to the control system, and the control system controls the bin door 10 at the opening to block the opening. At the same time, the two unloading conveyor belts 11 stop in a very short time, so that the material unloaded during the closing of the bin door 10 accumulates on the unloading conveyor belts 11 and does not enter the measuring hopper, thereby reducing the difference between the actual loading amount of the measuring hopper and the measured value;

[0068] Before mixing, water is injected into the heat-insulating interlayer 13 and heated by the heating system 16. The heated water is pumped into the water metering bucket 17 by the water pump 20 for metering. After metering, the water is added to the mixing main unit 18, and the heat of the water is used to ensure the mixing temperature of the concrete.

[0069] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A concrete mortar proportioning feeding device, comprising a material storage system, a material weighing system, a material conveying system, a mixing main machine (18) and a control system, characterized in that: The material storage system is connected to the material weighing system, the material conveying system comprises a conveyor belt group (3), the material storage system comprises a primary material storage bin (1) and a secondary material storage bin (2), the conveyor belt group (3) connects the primary material storage bin (1) and the secondary material storage bin (2), and a material heating component (7) is provided on the surface of the conveyor belt group (3); The control system is electrically connected to the material conveying system, the material weighing system, the material storage system, and the mixing host (18) to control the operation of each system; The material weighing system comprises a material weighing hopper (4), the material weighing hopper (4) being connected below the secondary material storage bin, a precise material discharge component being arranged in the secondary material storage bin, the precise material discharge component being used for precisely controlling the discharge of material from the secondary material storage bin into the material weighing hopper (4); The precise material discharge assembly comprises a bin door (10) and a material discharge conveyor belt (11); the secondary material storage bin comprises a storage chamber (21) and a feeding port (22); an opening is provided at the bottom of the storage chamber (21); the bin door (10) covers the opening and can slide along the opening; The feeding port (22) is arranged below the storage chamber (21), the feeding port (22) is connected to the storage chamber (21) through the opening, and the unloading conveyor belt (11) is connected to the side wall of the feeding port (22); The unloading conveyor belts (11) are arranged in two symmetrical and oblique manners, with the ends of the two unloading conveyor belts (11) close to each other being lower and the ends of the two unloading conveyor belts (11) away from each other being higher, and being able to receive the materials discharged from the opening.

2. A concrete mortar proportioning feeding device according to claim 1, characterized in that: The material heating assembly (7) comprises a heating device (71) and a heating rod (72); the heating device (71) is arranged on the side of the conveyor belt assembly (3); the length extension direction of the heating rod (72) is perpendicular to the movement direction of the conveyor belt assembly (3); and the end of the heating rod (72) is rotatably connected to the heating device (71).

3. A concrete mortar proportioning feeding device according to claim 2, characterized in that: A heat conducting sheet (8) is provided on the heating rod (72).

4. A concrete mortar proportioning feeding device according to claim 3, characterized in that: The heat conducting sheet (8) comprises a supporting layer (81) and a heat conducting layer (82), the supporting layer (81) is arranged in the heat conducting layer (82) and is covered by the heat conducting layer (82), the heat conducting layer (82) is fixedly connected to the surface of the heating rod (72), and the length extension direction of the heat conducting sheet (8) is the radial direction of the heating rod (72); The heat-conducting layer (82) is coated outside the supporting layer (81) to guide the heat generated by the heating rod (72) and extend the heat range of the heating rod (72); the heat-conducting layer (82) is a soft heat-conducting material, the supporting layer (81) is an elastic material, and the heat-conducting sheet (8) is in contact with the surface of the conveyor belt assembly (3).

5. A concrete mortar proportioning feeding device according to claim 3, characterized in that: The heating rod (72) comprises a heating shell (721) and a heating wire (722); the heating shell (721) is sleeved outside the heating wire (722); the heating wire (722) is fixedly connected to the heating device (71); the heating shell (721) is rotatably connected to the heating device (71); and the heat conducting sheet (8) is fixedly connected to the outer surface of the heating shell (721).

6. A concrete mortar proportioning feeding device according to claim 5, characterized in that: The transmission belt assembly (3) comprises a transmission shaft (31) and a transmission belt (32); a transmission belt (19) is provided between the transmission shaft (31) and the heating shell (721) and transmission is performed via the transmission belt (19); and the heat conducting sheet (8) is in contact with the surface of the transmission belt (32).

7. A concrete mortar proportioning feeding device according to claim 1, characterized in that: The conveyor belt assembly (3) is externally covered with a windproof shell (9).

8. A concrete mortar proportioning feeding device according to claim 1, characterized in that: The outer jacket of the mixing main unit (18) is provided with a heat-insulating interlayer (13), a water outlet (14) and a water inlet (15) are provided in the heat-insulating interlayer (13), and a heating system (16) is also provided in the heat-insulating interlayer (13); A water measuring hopper (17) is connected above the main mixing unit (18), and the water measuring hopper (17) is in communication with the thermal insulation interlayer (13). Water in the thermal insulation interlayer (13) rises into the water measuring hopper (17) through a water pump (20).

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