Blended fertilizer raw material premixing device

Abstract

A bulk blending fertilizer raw material premixing device comprises a stirring tank arranged under the ground, a premixing motor and a speed reducer which are arranged at the top of the stirring tank, and a stirring shaft which is arranged in the stirring tank and is connected with the speed reducer, the stirring tank comprises an upper cylinder part and a lower conical cylinder part, and a transverse plate for people to tread is arranged at the top of the upper cylinder part; the transverse plate penetrates through the center of the top of the upper cylinder part, and grid strips for preventing personnel from falling are further arranged at the top of the upper cylinder part and located on the two sides of the transverse plate; the bottom of the lower conical barrel part is provided with a discharge port with a valve, and the discharge port is connected with a feed end of a screw conveyer arranged below the discharge port. The underground device with the premixing function and convenient for feeding of fertilizer raw materials has the advantages that the stirring and mixing time of subsequent mixed fertilizer production can be effectively shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production, in particular to a premixing device for blending fertilizer raw materials. Background Art

[0002] The mixing equipment used in the production of blended fertilizers generally includes a lifting device and a stirring device. However, the stirring device is usually located at a relatively high height, requiring workers to lift the fertilizer raw materials to a high position before feeding them into the stirring device's feed hopper. Directly adding and stirring the fertilizers through a conveyor typically takes a long time, so premixing the fertilizer raw materials is necessary to effectively reduce the mixing time required for subsequent blended fertilizer production. Therefore, an underground premixing device with a premixing function that facilitates the feeding of fertilizer raw materials is of great practical value in production. Utility Model Content

[0003] The purpose of this utility model is to provide a premixing device for blending fertilizer raw materials in order to overcome the above-mentioned shortcomings.

[0004] The utility model comprises a mixing tank arranged below the ground, a premixing motor and a reducer arranged on the top of the mixing tank, and a mixing shaft arranged inside the mixing tank and connected to the reducer.

[0005] The mixing tank comprises an upper cylindrical portion and a lower conical cylindrical portion. A horizontal plate for people to step on is provided on the top of the upper cylindrical portion, and the horizontal plate passes through the top center of the upper cylindrical portion. Grid bars are provided on both sides of the horizontal plate at the top of the upper cylindrical portion to prevent people from falling in. A discharge port with a valve is provided at the bottom of the lower conical cylindrical portion, and the discharge port is connected to the feed end of a screw conveyor provided thereunder.

[0006] Two sets of horizontal cross bars parallel to each other are fixed on the middle and upper part of the stirring shaft, and each set of horizontal cross bars consists of two horizontal cross bars symmetrically arranged on both sides of the stirring shaft. The horizontal cross bars on the same side of the two sets of horizontal cross bars are fixedly connected by multiple vertical bars, and the top and bottom ends of the multiple vertical bars are respectively fixed with a scraper;

[0007] The lower end of the stirring shaft is located just above the discharge port, and the lower end of the stirring shaft is also provided with a spiral blade portion for facilitating the discharge of the fertilizer mixture.

[0008] Preferably, the screw conveyor is arranged at an angle, and its discharge end is located on one side of the mixing tank.

[0009] Preferably, a through hole for the stirring shaft to pass through is provided in the middle of the transverse plate.

[0010] Preferably, the scraper is a triangular prism-shaped plate.

[0011] Preferably, the two groups of horizontal cross bars are located inside the upper cylindrical portion, and the spiral blade portion is located inside the lower conical cylindrical portion.

[0012] Preferably, the length of the vertical rod is greater than the distance between two horizontal cross bars located on the same side in the two groups of horizontal cross bars.

[0013] The utility model has the advantages that the underground device with a premixing function is convenient for feeding fertilizer raw materials and can effectively reduce the time for subsequent mixing and stirring of blended fertilizer production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 Schematic diagram of the structure of multiple vertical rods on the horizontal crossbar on the same side.

[0016] Figure 3 Schematic diagram of the structure of the vertical rod and scraper.

[0017] Figure 4 Schematic diagram of the structure of the spiral blade part at the lower end of the stirring shaft.

[0018] Figure 5 Schematic diagram of the structure of the cross plate and grid bars. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0021] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the utility model is usually placed when in use. This is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as limiting the present invention. In addition, if the terms "first", "second", etc. appear in the description of the present invention, they are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] As shown in the accompanying drawings, the utility model includes a mixing tank 1 disposed below the ground, a premixing motor 2 and a reducer disposed on the top of the mixing tank 1, and a mixing shaft 3 disposed inside the mixing tank 1 and connected to the reducer.

[0024] The mixing tank 1 includes an upper cylindrical portion 11 and a lower conical cylindrical portion 12. A horizontal plate 13 for people to step on is provided on the top of the upper cylindrical portion 11. The horizontal plate 13 passes through the top center of the upper cylindrical portion 11. Grid bars 14 are provided on the top of the upper cylindrical portion 11 and on both sides of the horizontal plate 12 to prevent people from falling in. A discharge port 15 with a valve is provided at the bottom of the lower conical cylindrical portion 12. The discharge port 15 is connected to the feed end of a screw conveyor 16 provided thereunder. A feeding person stands on the horizontal plate 13 and feeds the mixed fertilizer raw materials into the mixing tank 1 according to a proportion toward the grid bars 14.

[0025] Two sets of horizontal cross bars 20 are fixedly provided in parallel to each other at the middle and upper part of the stirring shaft 3. Each set of horizontal cross bars 20 is composed of two horizontal cross bars symmetrically arranged on both sides of the stirring shaft 3. A plurality of vertical rods 21 are fixedly connected between the horizontal cross bars on the same side of the two sets of horizontal cross bars 20. A scraper 22 is fixedly provided at the top and bottom ends of the plurality of vertical rods 21.

[0026] The lower end of the stirring shaft 3 is located directly above the discharge port 15 , and the lower end of the stirring shaft 3 is further provided with a spiral blade portion 23 for facilitating the discharge of the fertilizer mixture.

[0027] In another technical solution, the screw conveyor 16 is arranged at an angle, and its discharge end is located on one side of the mixing tank 1 .

[0028] In another technical solution, a through hole 17 for the stirring shaft 3 to pass through is provided in the middle of the transverse plate 13 .

[0029] In another technical solution, the scraper 22 is a triangular prism-shaped plate.

[0030] In another technical solution, the two groups of horizontal cross bars 20 are located inside the upper cylindrical portion 11 , and the spiral blade portion 23 is located inside the lower conical cylindrical portion 12 .

[0031] In another technical solution, the length of the vertical rod 21 is greater than the distance between two horizontal cross bars on the same side in the two groups of horizontal cross bars 20 .

[0032] Working method: The operator will stand on the horizontal board 13 and put the mixed fertilizer raw materials into the grid bars 14 in proportion. The fertilizer raw materials enter the mixing tank 1 through the gaps between the grid bars 14, and then the premixing motor 2 and the reducer drive the mixing shaft 3 to rotate. The mixing shaft then drives two sets of horizontal cross bars 20 and multiple vertical rods 21 thereon to stir, and also drives the scrapers 22 at the top and bottom ends of the vertical rods 21 to stir. After preliminary premixing, the discharge port 15 is opened and the fertilizer mixture is discharged through the screw conveyor 16.

[0033] The above implementation cases are only for illustrating the technical solutions and features of the utility model, and their purpose is to enable people familiar with the technology to implement them better. They cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model are within the scope of protection of the utility model. Those not described in detail are prior art.

Claims

1. A premixing device for blending fertilizer raw materials, comprising a mixing tank (1) arranged below the ground, a premixing motor (2) and a reducer arranged on the top of the mixing tank (1), and a mixing shaft (3) arranged inside the mixing tank (1) and connected to the reducer, characterized in that: The mixing tank (1) comprises an upper cylindrical portion (11) and a lower conical cylindrical portion (12); a horizontal plate (13) for people to step on is provided at the top of the upper cylindrical portion (11); the horizontal plate (13) passes through the top center of the upper cylindrical portion (11); grid bars (14) are provided at the top of the upper cylindrical portion (11) and on both sides of the horizontal plate (12) to prevent people from falling in; a discharge port (15) with a valve is provided at the bottom of the lower conical cylindrical portion (12); the discharge port (15) is connected to the feed end of a screw conveyor (16) provided thereunder; Two sets of horizontal cross bars (20) parallel to each other are fixedly provided at the middle and upper part of the stirring shaft (3), each set of horizontal cross bars (20) is composed of two horizontal cross bars symmetrically arranged on both sides of the stirring shaft (3), and a plurality of vertical bars (21) are fixedly connected between the horizontal cross bars on the same side of the two sets of horizontal cross bars (20), and a scraper (22) is fixedly connected to the top and bottom ends of the plurality of vertical bars (21); The lower end of the stirring shaft (3) is located directly above the discharge port (15), and the lower end of the stirring shaft (3) is also provided with a spiral blade portion (23) for facilitating the discharge of the fertilizer mixture.

2. A device for premixing blended fertilizer raw materials according to claim 1, characterized in that: The screw conveyor (16) is arranged obliquely, and its discharge end is located on one side of the stirring tank (1).

3. A premixing device for blending fertilizer raw materials according to claim 1, characterized in that: A through hole (17) for the stirring shaft (3) to pass through is provided in the middle of the transverse plate (13).

4. A premixing device for blending fertilizer raw materials according to claim 1, characterized in that: The scraper (22) is a triangular prism-shaped plate.

5. A device for premixing blended fertilizer raw materials according to claim 1, characterized in that: The two groups of horizontal cross bars (20) are located inside the upper cylindrical portion (11), and the spiral blade portion (23) is located inside the lower conical cylindrical portion (12).

6. A device for premixing blended fertilizer raw materials according to claim 1, characterized in that: The length of the vertical rod (21) is greater than the distance between two horizontal cross bars (20) located on the same side.

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