Batch feeding device for concrete dry material stirring

Abstract

The utility model relates to the technical field of high-ductility concrete dry material preparation, in particular to a concrete dry material stirring and batch feeding device which comprises a main frame body, a first feeding device, a fiber feeding device, a first storage bin, an additive material box, a dry powder metering device, an additive metering device, a stirring device and a discharging device. The feeding device is reasonable and compact in structure and convenient to use, batch feeding can be achieved through the first spiral conveyor, the first lifting device and the fiber spiral conveyor, dry powder in the first storage bin, fibers in the fiber metering device and additives in the additive box are metered, and the feeding efficiency is improved. All the components can be proportioned according to the required proportion, and then all the components are uniformly mixed through the stirring device, so that the working environment is greatly improved, the working efficiency is remarkably improved, and the device has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of high-ductility concrete dry materials, and particularly relates to a batch feeding device for mixing concrete dry materials. Background Art

[0002] High-ductility concrete is a kind of concrete with high ductility, high damage resistance, high durability, high strength and good crack control ability. The raw materials of high-ductility concrete include fibers. During construction, the fiber raw materials need to be mixed with other matrix materials such as cement and quartz sand, as well as water, and the fibers need to be evenly dispersed in the matrix materials and water. The commonly used fibers for high-ductility concrete at present are polypropylene coarse fibers, polyvinyl alcohol fibers or polypropylene microfibers, etc. The length of the above fibers is usually less than 5 cm, and the diameter of the fibers is small. When adding the fibers into the mixing device, the fibers need to be taken out from the packaging bags. Due to the small diameter and length of the fibers, the weight of the fibers is small. During the process of taking out the fibers and starting to mix the fibers, some scattered fibers and fiber debris will float into the air in large quantities, and thus are easily inhaled by workers. Similar to asbestos, the fibers will cause great harm to the human body after being inhaled. At present, although there are also high-ductility concrete dry materials for sale, that is, powdery sand, cement, fibers and other additives are mixed evenly according to a set ratio to form a mixture, and water is added for mixing during use. Since its components have been pre-mixed in proportion, it is beneficial to the standardization of building production, can significantly improve the construction efficiency, improve the construction quality and reduce the construction cost. However, it is not easy to achieve batch feeding during the preparation of the existing high-ductility concrete dry materials. Because a large number of personnel are still needed to participate in the operation, due to the large amount of dust and the relatively harsh working environment, on the one hand, the labor intensity of the relevant personnel is large, time-consuming and laborious, and the work efficiency is low. On the other hand, there is environmental pollution, and the operators are at relatively high health risks. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a batch feeding device for mixing concrete dry materials, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problems of difficult batch feeding, large labor intensity, time-consuming and laborious, low work efficiency, environmental pollution and health risks existing in the preparation of the existing high-ductility concrete dry materials.

[0004] The technical solution adopted by the utility model is as follows: a batch feeding device for concrete dry materials, which includes a main frame body, a first feeding device, a fiber feeding device, a first storage bin, an additive tank, a dry powder material metering device, an additive metering device, a stirring device and a discharging device. At the upper end of the main frame body, a first storage bin and no less than two additive tanks are fixedly installed. In the middle of the main frame body, a dry powder material metering device and an additive metering device are fixedly installed. The lower discharging port of the first storage bin is communicated with the inlet of the dry powder material metering device through a dry powder material discharging valve. The lower discharging ports of each additive tank are communicated with the inlets of the additive metering devices through additive discharging valves. A stirring device is fixedly installed on the main frame body below the dry powder material metering device and the additive metering device. The lower discharging ports of the dry powder material metering device and the additive metering device are connected to the feeding port of the stirring device. A discharging device is arranged on the main frame body below the stirring device; the first feeding device is close to the left side of the main frame body. The first feeding device includes a pit-type first bin, a first screw conveyor and a first lifting device. The pit-type first bin is located below the ground. A first lifting device is arranged on the left side of the main frame body. The upper end of the pit-type first bin is provided with a powder bin cover plate with a powder material feeding chute. The middle part of the powder material feeding chute is concave to form a feeding port. The lower discharging port of the pit-type first bin is connected to the inlet of the first screw conveyor. The discharging port of the first screw conveyor is communicated with the feeding port of the first lifting device. The discharging port of the first lifting device is communicated with the upper feeding port of the first storage bin; the fiber feeding device is located on the ground close to the main frame body. The fiber feeding device includes a pit-type fiber bin, a fiber pusher, a fiber screw conveyor and a pit airtight cover. The upper end of the pit-type fiber bin is provided with a fiber bin cover plate with a fiber feeding chute. The middle part of the fiber feeding chute is concave to form a feeding port. The lower discharging port of the pit-type fiber bin is connected to the inlet of the fiber screw conveyor. A fiber metering device is arranged on the main frame body above the stirring device. The discharging port of the fiber screw conveyor is connected to the inlet of the fiber metering device. The lower discharging port of the fiber metering device is connected to the feeding port of the stirring device.

[0005] The following is a further optimization or / and improvement of the above application technical solution:

[0006] Further, preferably, no less than one aggregate feeding device is arranged below the ground close to the main frame body. The aggregate feeding device includes a pit-type aggregate bin and an aggregate screw conveyor. The upper end of the pit-type aggregate bin is provided with an aggregate bin cover plate with an aggregate feeding chute. The middle part of the aggregate feeding chute is concave to form a feeding port. The lower discharging port of the pit-type aggregate bin is connected to the inlet of the aggregate screw conveyor. An aggregate metering device is arranged on the main frame body above the stirring device. The discharging port of the aggregate screw conveyor is connected to the inlet of the aggregate metering device. The lower discharging port of the aggregate metering device is connected to the feeding port of the stirring device.

[0007] Further, preferably, a second feeding device is provided to the right of the main frame body. A second storage bin is fixedly installed at the upper end of the main frame body. The lower discharge port of the second storage bin is connected to the inlet of the dry powder material metering device through a dry powder material discharge valve. The second feeding device has the same structure as the first feeding device. The second feeding device includes a pit-type second bin, a second screw conveyor, and a second lifting device. The discharge port of the second lifting device is connected to the second storage bin.

[0008] Further, preferably, a material port screen plate is respectively provided at the discharge ports of the powder material feeding chute and the aggregate material feeding chute. The material port screen plate includes a filter screen plate at the upper end and a support grid plate at the lower end. The lower end of the filter screen plate is welded and fixed to the support grid plate.

[0009] Further, preferably, a material port grid and a flipping baffle are provided at the discharge port of the fiber feeding chute. A material port grid is provided at the upper port of the discharge port. The material port grid includes support grid bars and blade-shaped vertical plates fixed on the support grid bars. A flipping baffle is installed at the lower port of the discharge port through a baffle hinge seat. The baffle hinge seat is located at the lower right part of the lower port of the discharge port. The right part of the flipping baffle is hinged to the baffle hinge seat. A counterweight block is provided at the right end of the flipping baffle. The left part of the flipping baffle presses against the lower end of the discharge port.

[0010] Further, preferably, the pit airtight cover is in the shape of a five-sided box and is arranged on the fiber bin cover of the pit-type fiber bin. A fiber feeding port is provided on one side of the pit airtight cover and is provided with a fiber cover door. A track is provided between the discharge port of the fiber feeding chute and the fiber cover door, and a fiber pusher capable of moving along the track is provided. The fiber cover door is installed at the fiber feeding port and can close the fiber feeding port.

[0011] Further, preferably, the fiber pusher includes a vehicle frame, a camera device, a control device, a traveling device, a hydraulic transmission device, a push arm device, and an operation execution member. A camera device, a control device, a traveling device, and a hydraulic transmission device are provided on the vehicle frame. The traveling device includes front and rear traveling wheels. The fiber pusher can travel along the track and stop at the furnace door. The front and rear traveling wheels are installed on the track. A push arm device is provided at the front part of the vehicle frame. An operation execution member is fixedly installed at the front part of the push arm device. The camera device, the traveling device, the hydraulic transmission device, and the push arm device are respectively electrically connected to the control device.

[0012] Further, preferably, vertical guide rails are respectively provided on the pit airtight cover on both sides of the fiber feeding port. The left and right sides of the fiber cover door are respectively installed in the corresponding vertical guide rails. An electric winch is provided on the pit airtight cover corresponding to the upper part of the fiber feeding port. The left and right upper sides of the fiber cover door are respectively installed on the electric winch through steel wires. The left and right upper sides of the fiber cover door are respectively provided with lifting rings, and the lower ends of the steel wires are installed on the lifting rings.

[0013] Further, preferably, vibration devices are respectively provided at the lower discharge openings of the storage bins, and dust removal devices are respectively provided at the upper ends of the storage bins and the upper end of the pit airtight cover; an automatic control device is provided on the main frame body, and the control terminals of the first feeding device, the fiber feeding device, the dry powder material discharge valve, the additive discharge valve, the additive metering device, the dry powder material metering device, the stirring device, and the discharging device are respectively electrically connected to the automatic control device; the discharging device includes a material distributing device, a discharge port, and a packaging device. The lower part of the material distributing device is provided with a first material pipe and a second material pipe. The lower end of the first material pipe is provided with a packaging device. A transport vehicle parking space is provided at the lower part of the main frame body below the second material pipe. A discharge port is provided on the main frame body corresponding to the upper end position of the transport vehicle parking space. The lower end of the second material pipe is connected to the discharge port.

[0014] The structure of the utility model is reasonable and compact, and it is convenient to use. Through the first screw conveyor, the first lifting device, and the fiber screw conveyor, it can achieve batch feeding. By metering the dry powder in the first storage bin, the fiber in the fiber metering device, and the additive in the additive tank, the components can be proportioned according to the requirements. Then, the components are evenly mixed by the stirring device, which not only greatly improves the working environment but also significantly improves the working efficiency, and has the characteristics of safety, labor saving, simplicity, and high efficiency. Description of the Drawings

[0015] Figure 1 It is the front view structural schematic diagram of Embodiments 1-10 of the utility model;

[0016] Figure 2 is Figure 1 the enlarged structural schematic diagram of the fiber pusher at A in

[0017] Figure 3 is Figure 1 the enlarged schematic diagram in the B direction of the pit airtight cover in

[0018] Legend: 1 is the main frame body, 2 is the first storage bin, 3 is the additive bin, 4 is the dry powder material metering device, 5 is the additive metering device, 6 is the mixing device, 7 is the discharging device, 8 is the pit-type first bin, 9 is the first screw conveyor, 10 is the first lifting device, 11 is the powder material feeding chute, 12 is the pit-type fiber bin, 13 is the fiber pusher, 14 is the fiber screw conveyor, 15 is the pit enclosure, 16 is the fiber feeding chute, 17 is the fiber metering device, 18 is the pit-type aggregate bin, 19 is the aggregate screw conveyor, 20 is the aggregate feeding chute, 21 is the aggregate metering device, 22 is the second storage bin, 23 is the pit-type second bin, 24 is the second screw conveyor, 25 is the second lifting device, 26 is the filter mesh plate, 27 is the support grid plate, 28 is the material port grid, 29 is the flip baffle, 30 is the baffle hinge seat, 31 is the fiber feeding port, 32 is the fiber cover door, 33 is the track, 34 is the automatic control device, 35 is the camera device, 36 is the hydraulic drive device, 37 is the push arm device, 38 is the operation execution member, 39 is the walking wheel, 40 is the vertical guide rail, 41 is the electric winch, 42 is the steel wire rope, 43 is the lifting ring, 44 is the vibration device, 45 is the dust removal device. Detailed implementation mode

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and the detailed implementation mode.

[0020] Embodiment 1:

[0021] According to the specification appendix Figures 1-3As shown in the figure, the utility model provides a batch feeding device for dry concrete mixing, which includes a main frame body 1, a first feeding device, a fiber feeding device, a first storage bin 2, an additive bin 3, a dry powder material metering device 4, an additive metering device 5, a mixing device 6 and a discharging device 7. At the upper end of the main frame body 1, a first storage bin 2 and not less than two additive bins 3 are fixedly installed. In the middle of the main frame body 1, a dry powder material metering device 4 and an additive metering device 5 are fixedly installed. The lower discharge port of the first storage bin 2 is connected to the inlet of the dry powder material metering device 4 through a dry powder material discharge valve. The lower discharge ports of each additive bin 3 are connected to the inlet of the additive metering device 5 through additive discharge valves. A mixing device 6 is fixedly installed on the main frame body 1 below the dry powder material metering device 4 and the additive metering device 5. The lower discharge ports of the dry powder material metering device 4 and the additive metering device 5 are connected to the inlet of the mixing device 6. A discharging device 7 is provided on the main frame body 1 below the mixing device 6; The first feeding device is close to the left side of the main frame body 1. The first feeding device includes a pit-type first bin 8, a first screw conveyor 9 and a first lifting device 10. The pit-type first bin 8 is located below the ground. A first lifting device 10 is provided on the left side of the main frame body 1. The upper end of the pit-type first bin 8 is provided with a powder bin cover plate with a powder material feeding chute 11. The middle of the powder material feeding chute 11 is concave and forms a feeding port. The lower discharge port of the pit-type first bin 8 is connected to the inlet of the first screw conveyor 9. The discharge port of the first screw conveyor 9 is connected to the inlet of the first lifting device 10. The discharge port of the first lifting device 10 is connected to the upper inlet of the first storage bin 2; The fiber feeding device is located on the ground close to the main frame body 1. The fiber feeding device includes a pit-type fiber bin 12, a fiber pusher 13, a fiber screw conveyor 14 and a pit airtight cover 15. The upper end of the pit-type fiber bin 12 is provided with a fiber bin cover plate with a fiber feeding chute 16. The middle of the fiber feeding chute 16 is concave and forms a feeding port. The lower discharge port of the pit-type fiber bin 12 is connected to the inlet of the fiber screw conveyor 14. A fiber metering device 17 is provided on the main frame body 1 above the mixing device 6. The discharge port of the fiber screw conveyor 14 is connected to the inlet of the fiber metering device 17. The lower discharge port of the fiber metering device 17 is connected to the inlet of the mixing device 6.The dry powder materials packed in ton bags are directly placed on the cover plate of the pit-type first storage bin 8, and the dry powder materials fall into the powder feeding chute 11. The fiber packaging bags are directly placed on the cover plate of the pit-type fiber bin 12 and are sent into the fiber feeding chute 16 through the fiber pusher 13. Through the first screw conveyor 9, the first lifting device 10, and the fiber screw conveyor 14, the first feeding device and the fiber feeding device can achieve batch feeding. By measuring the dry powder materials in the first storage bin 2, the fibers in the fiber metering device 17, and the additives in the additive tank 3, the components can be batch-fed and proportioned according to the required ratio. Then, the components are evenly mixed by the stirring device 6. The pit-type enclosure 15 can effectively prevent the fibers from flying, which not only greatly improves the working environment but also significantly improves the working efficiency, featuring safety, labor-saving, simplicity, and high efficiency.

[0022] Example 2:

[0023] According to the attached Figure 1 As shown in the figure, the difference between this embodiment and Embodiment 1 is that there is at least one aggregate feeding device under the ground near the main frame 1. The aggregate feeding device includes a pit-type aggregate bin 18 and an aggregate screw conveyor 19. The upper end of the pit-type aggregate bin 18 is provided with an aggregate bin cover plate with an aggregate feeding chute 20. The middle part of the aggregate feeding chute 20 is concave to form a feeding port. The lower discharge port of the pit-type aggregate bin 18 is connected to the inlet of the aggregate screw conveyor 19. An aggregate metering device 21 is provided on the main frame 1 above the stirring device 6. The discharge port of the aggregate screw conveyor 19 is connected to the inlet of the aggregate metering device 21. The lower discharge port of the aggregate metering device 21 is connected to the inlet of the stirring device 6.

[0024] Example 3:

[0025] According to the attached Figure 1 As shown in the figure, the difference between this embodiment and Embodiments 1-2 is that a second feeding device is provided near the right side of the main frame 1. A second storage bin 22 is fixedly installed at the upper end of the main frame 1. The lower discharge port of the second storage bin 22 is connected to the inlet of the dry powder metering device 4 through a dry powder discharge valve. The second feeding device has the same structure as the first feeding device. The second feeding device includes a pit-type second storage bin 23, a second screw conveyor 24, and a second lifting device 25. The discharge port of the second lifting device 25 is connected to the second storage bin 22. Different dry powder materials are respectively transported to the first storage bin 2 and the second storage bin 22. By respectively measuring the dry powder materials in the first storage bin 2 and the second storage bin 22, the components can be proportioned according to the required ratio.

[0026] Example 4:

[0027] According to the attached Figure 1As shown, the difference between this embodiment and Embodiments 1 - 3 lies in that the discharge ports of the powder discharge chute 11 and the aggregate discharge chute 20 are respectively provided with a discharge port screen plate. The discharge port screen plate includes a filter screen plate 26 at the upper end and a support grid plate 27 at the lower end. The lower end of the filter screen plate 26 is welded and fixed to the support grid plate 27. Through the discharge port screen plate, lumped large materials can be prevented from entering the pit - type first bin 8 or the pit - type second bin 23, avoiding blockage of the subsequent first screw conveyor 9 and second screw conveyor 24.

[0028] Embodiment 5:

[0029] According to the attached drawings of the specification Figure 1 As shown, the difference between this embodiment and Embodiments 1 - 4 lies in that the discharge port of the fiber discharge chute 16 is provided with a discharge port grid 28 and a flip - over baffle 29. The upper port of the discharge port is provided with a discharge port grid 28. The discharge port grid 28 includes support grid bars and blade - equipped vertical plates fixed on the support grid bars. The lower port of the discharge port is installed with a flip - over baffle 29 through a baffle hinge seat 30. The baffle hinge seat 30 is located at the lower right part of the lower port of the discharge port. The right part of the flip - over baffle 29 is hinged to the baffle hinge seat 30. A counterweight is provided at the right end of the flip - over baffle 29, and the left part of the flip - over baffle 29 presses against the lower end of the discharge port. Through the flip - over baffle 29, fibers in the pit - type fiber bin 12 can be effectively prevented from flying out, further improving the working environment.

[0030] Embodiment 6:

[0031] According to the attached drawings of the specification Figure 1 As shown, the difference between this embodiment and Embodiments 1 - 5 lies in that the pit airtight cover 15 is in the shape of a five - sided box and is arranged on the fiber bin cover of the pit - type fiber bin 12. A fiber feeding port 31 is provided on one side of the pit airtight cover 15 and is equipped with a fiber cover door 32. A track 33 is provided between the discharge port of the fiber discharge chute 16 and the fiber cover door 32, and a fiber pusher 13 capable of moving along the track 33 is provided. The fiber cover door 32 is installed at the fiber feeding port 31 and can seal the fiber feeding port 31. The pit airtight cover 15 is beneficial to reducing the scattering of fibers when pouring fibers into the discharge port of the fiber discharge chute 16, reducing the damage caused by fiber flying, and is beneficial to reducing fiber loss, improving its material utilization rate, thus greatly saving costs; through the openable fiber cover door 32, it is convenient to send in fiber packaging bags, making it more convenient to use.

[0032] Embodiment 7:

[0033] According to the attached drawings of the specification Figures 1-3As shown in the figure, the difference between this embodiment and Embodiments 1-6 lies in that the fiber pusher 13 includes a vehicle frame, a camera device 35, a control device, a traveling device, a hydraulic transmission device 36, a push arm device 37 and an operation execution member 38. The vehicle frame is provided with a camera device 35, a control device, a traveling device and a hydraulic transmission device 36. The traveling device includes front and rear traveling wheels 39. The fiber pusher 13 can travel along the track 33 and stop at the furnace door 17. The front and rear traveling wheels 39 are installed on the track 33. A push arm device 37 is provided at the front part of the vehicle frame. An operation execution member 38 is fixedly installed at the front part of the push arm device 37. The camera device 35, the traveling device, the hydraulic transmission device 36 and the push arm device 37 are respectively electrically connected to the control device. The control device makes the traveling device drive the fiber pusher 13 to move along the track 33, realizes monitoring through the camera device 35, controls the operation of the operation execution member 38 through the hydraulic transmission device 36 and the push arm device 37, and realizes that the operation execution member 38 pushes the fiber packaging bag and adjusts the angle of its front end relative to the material outlet of the fiber feeding chute 16, so as to meet the on-site use requirements. Through the present utility model, the working environment of the operator and the safety factor during operation are greatly improved. The fiber pusher 13 has strong mobility. A single device can complete the fiber feeding work, and only one person is required to operate it.

[0034] Vertical guide rails 40 are respectively provided on the pit airtight covers 15 on the left and right sides of the fiber feeding port 31. The left and right sides of the fiber cover door 32 are respectively installed in the corresponding vertical guide rails 40. An electric winch 41 is provided on the pit airtight cover 15 corresponding to the upper part of the fiber feeding port 31. The left and right sides of the upper end of the fiber cover door 32 are respectively installed on the electric winch 41 through steel wires 42. The left and right sides of the upper end of the fiber cover door 32 are respectively provided with lifting rings 43. The lower ends of the steel wires 42 are installed on the lifting rings 43.

[0035] Embodiment 8:

[0036] According to the appended drawings of the specification Figure 1 As shown in the figure, the difference between this embodiment and Embodiments 1-7 lies in that vibration devices 44 are respectively provided at the lower discharge ports of each storage bin, and dust removal devices 45 are respectively provided at the upper ends of each storage bin and the upper end of the pit airtight cover 15. By using the vibration device 44 for discharging materials, the uniform discharge of materials can be ensured, and effective dust removal can be realized through the dust removal device 45. During actual operation, it is best to add each dry powder material to the mixing device 6 in ascending order of specific gravity, which can make the mixing of each dry powder material more uniform.

[0037] Embodiment 9:

[0038] According to the appended drawings of the specification Figure 1As shown in the figure, the difference between this embodiment and Embodiments 1-8 is that an automatic control device 34 is provided on the main frame body 1, and the control terminals of the first feeding device, the fiber feeding device, the dry powder material discharge valve, the additive discharge valve, the additive metering device 5, the dry powder material metering device 4, the stirring device 6, and the discharging device 7 are electrically connected to the automatic control device 34 respectively. Through the automatic control device 34, the whole process of batch feeding, batching, mixing, and discharging can be automatically controlled, making it more convenient to use.

[0039] Embodiment 10:

[0040] According to the appended drawings of the specification Figure 1 As shown in the figure, the difference between this embodiment and Embodiments 1-9 is that the discharging device 7 includes a material distributing device, a discharging port, and a packaging device. A first material pipe and a second material pipe are provided at the lower part of the material distributing device. A packaging device is provided at the lower end of the first material pipe. A transport vehicle parking space is provided at the lower part of the main frame body 1 below the second material pipe. A discharging port is provided on the main frame body 1 corresponding to the upper end position of the transport vehicle parking space. The lower end of the second material pipe is connected to the discharging port.

[0041] The present utility model is represented with reference to the appended drawings of the specification Figure 2 For the directional terms such as "upper", "lower", "left", "right", "top", "bottom", etc. mentioned therein, they are only for better and clearer description and understanding of the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0042] The above describes the preferred embodiments of the present utility model, but it should not be construed as a limitation to the claims. The present utility model is not limited to the above embodiments, and its specific structure is allowed to vary. All changes made within the protection scope of the independent claims of the present utility model are within the protection scope of the present utility model.

Claims

1. A batch feeding device for mixing dry concrete, characterized in that: The present invention relates to a material dispensing device and a material dispensing device, wherein the first material dispensing device and the material dispensing device are connected to each other via a feed conveyor and a feeding port. The material dispensing device comprises a first material dispensing device, a first material storage bin, an additive material box, a dry powder material metering device, an additive material metering device, a stirring device and a discharging device. The first material storage bin and no less than two additive material boxes are fixedly installed on the upper end of the main frame. The dry powder material metering device and the additive material metering device are fixedly installed on the middle part of the main frame. The lower end discharge port of the first material storage bin is connected with the inlet of the dry powder material metering device through a dry powder material discharge valve. The lower end discharge port of each additive material box is connected with the inlet of the additive metering device through an additive discharge valve. The stirring device is fixedly installed on the main frame below the dry powder material metering device and the additive metering device. The lower end discharge ports of the dry powder material metering device and the additive metering device are connected with the feed port of the stirring device. The discharging device is provided on the main frame below the stirring device. The first feeding device is close to the left side of the main frame. The first feeding device comprises a pit-type first material bin, a first screw conveyor and a first lifting device. The pit-type first material bin is located below the ground. A first lifting device is provided on the left side of the main frame, a powder bin cover with a powder material discharge guide groove is provided at the upper end of the pit-type first bin, the middle part of the powder material discharge guide groove is concave and forms a discharge port, the lower end discharge port of the pit-type first bin is connected to the inlet of the first screw conveyor, the discharge port of the first screw conveyor is connected to the feed port of the first lifting device, and the discharge port of the first lifting device is connected to the feed port at the upper end of the first storage bin; the fiber feeding device is located on the ground close to the main frame, and the fiber feeding device includes a pit-type A fiber bin, a fiber pusher, a fiber screw conveyor and a pit closed cover. The upper end of the pit-type fiber bin is provided with a fiber bin cover with a fiber discharge guide groove. The middle part of the fiber discharge guide groove is concave to form a discharge port. The lower end discharge port of the pit-type fiber bin is connected to the inlet of the fiber screw conveyor. A fiber metering device is provided on the main frame above the stirring device. The discharge port of the fiber screw conveyor is connected to the inlet of the fiber metering device. The lower end discharge port of the fiber metering device is connected to the feed port of the stirring device.

2. A batch feeding device for mixing dry concrete materials according to claim 1, characterized in that: At least one aggregate feeding device is arranged under the ground near the main frame, and the aggregate feeding device includes a pit-type aggregate bin and an aggregate screw conveyor. An aggregate bin cover with an aggregate discharge guide groove is arranged at the upper end of the pit-type aggregate bin, and the middle part of the aggregate discharge guide groove is concave to form a discharge port. The lower end discharge port of the pit-type aggregate bin is connected with the inlet of the aggregate screw conveyor. An aggregate metering device is arranged on the main frame above the stirring device, and the discharge port of the aggregate screw conveyor is connected with the inlet of the aggregate metering device, and the lower end discharge port of the aggregate metering device is connected with the feeding port of the stirring device.

3. A batch feeding device for mixing dry concrete materials according to claim 2, characterized in that: A second feeding device is provided near the right side of the main frame, and a second storage bin is fixedly installed on the upper end of the main frame. The lower end discharge port of the second storage bin is connected with the inlet of the dry powder metering device through a dry powder discharge valve. The second feeding device has the same structure as the first feeding device. The second feeding device includes a pit-type second bin, a second screw conveyor and a second lifting device, and the discharge port of the second lifting device is connected to the second storage bin.

4. A batch feeding device for mixing dry concrete materials according to claim 3, characterized in that: The feed openings of the powder material feeding guide trough and the aggregate material feeding guide trough are respectively provided with feed opening mesh plates, and the feed opening mesh plates include a filter mesh plate at the upper end and a support grid plate at the lower end, and the lower end of the filter mesh plate is welded and fixed on the support grid plate.

5. A batch feeding device for mixing dry concrete materials according to claim 1, 2, 3 or 4, characterized in that: The fiber feeding guide trough is provided with a feeding port grid and a flip baffle at the feeding port, the upper end of the feeding port is provided with a feeding port grid, the feeding port grid includes supporting bars and edged vertical plates fixed on the supporting bars, the lower end of the feeding port is provided with a flip baffle via a baffle hinge seat, the baffle hinge seat is located at the lower right part of the lower end of the feeding port, the right part of the flip baffle is hingedly mounted on the baffle hinge seat, a counterweight is provided at the right end of the flip baffle, and the left part of the flip baffle presses the lower end of the feeding port.

6. A batch feeding device for mixing dry concrete materials according to claim 1, 2, 3 or 4, characterized in that: The pit-sealed cover is in the shape of a five-sided box and is arranged on the fiber bin cover plate of the pit-type fiber bin. A fiber feeding port and a fiber covering material door are provided on one side of the pit-sealed cover. A track is provided between the feeding port of the fiber feeding guide groove and the fiber covering material door, and a fiber pusher that can move along the track is provided. The fiber covering material door is installed at the fiber feeding port and can close the fiber feeding port.

7. A batch feeding device for mixing dry concrete materials according to claim 1, 2, 3 or 4, characterized in that: The fiber pusher includes a frame, a camera device, a control device, a traveling device, a hydraulic transmission device, a push arm device and an operation execution part. The frame is provided with a camera device, a control device, a traveling device and a hydraulic transmission device. The traveling device includes front and rear traveling wheels. The fiber pusher can move along a track and can stop at a furnace door. The front and rear traveling wheels are installed on the track. A push arm device is provided at the front of the frame. An operation execution part is fixedly installed at the front of the push arm device. The camera device, the traveling device, the hydraulic transmission device and the push arm device are electrically connected to the control device respectively.

8. A batch feeding device for mixing dry concrete materials according to claim 6, characterized in that: Vertical guide rails are respectively provided on the pit-sealed covers on the left and right sides of the fiber feeding port, and the left and right sides of the fiber cover material door are respectively installed in the corresponding vertical guide rails; an electric winch is provided on the pit-sealed cover above the corresponding fiber feeding port, and the left and right sides of the upper end of the fiber cover material door are respectively installed on the electric winch through steel wire ropes; and lifting rings are respectively provided on the left and right sides of the upper end of the fiber cover material door, and the lower end of the steel wire rope is installed on the lifting rings.

9. A batch feeding device for mixing dry concrete materials according to claim 1, 2, 3 or 4, characterized in that: A vibration device is provided at the discharge port at the lower end of the storage bin, and a dust removal device is provided at the upper end of the storage bin and the upper end of the pit enclosure. An automatic control device is provided on the main frame, and the control terminals of the first feeding device, the fiber feeding device, the dry powder discharge valve, the additive discharge valve, the additive metering device, the dry powder metering device, the stirring device and the discharge device are electrically connected to the automatic control device respectively. The discharge device includes a dividing device, a discharge port and a packaging device, a first material pipe and a second material pipe are provided at the lower part of the dividing device, a packaging device is provided at the lower end of the first material pipe, a transport vehicle parking space is provided at the lower part of the main frame below the second material pipe, a discharge port is provided on the main frame corresponding to the upper end of the transport vehicle parking space, and the lower end of the second material pipe is connected to the discharge port.

10. A batch feeding device for mixing dry concrete materials according to claim 8, characterized in that: The lower end of the storage bin is provided with a vibration device at the discharge port, and the upper end of the storage bin and the upper end of the pit sealing cover are provided with a dust removal device; An automatic control device is provided on the main frame, and control terminals of the first feeding device, the fiber feeding device, the dry powder material discharging valve, the additive material discharging valve, the additive metering device, the dry powder material metering device, the stirring device and the discharging device are electrically connected to the automatic control device respectively; the discharging device includes a discharging device, a discharging port and a packaging device, a first material pipe and a second material pipe are provided at the lower part of the discharging device, a packaging device is provided at the lower end of the first material pipe, a transport vehicle parking space is provided at the lower part of the main frame below the second material pipe, a discharging port is provided on the main frame corresponding to the upper end of the transport vehicle parking space, and the lower end of the second material pipe is connected to the discharging port.

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