Gravel removing winnowing machine

Abstract

The utility model relates to the technical field of crop screening equipment, in particular to a sandstone removing winnowing machine which comprises a winnowing machine body used for conducting preliminary screening on materials, a sandstone screening device is arranged below a discharging port of the winnowing machine body, and the sandstone screening device comprises a vibration bed used for conveying the materials screened out by a winnowing mechanism. The vibration bed is internally provided with at least one stone filtering mechanism used for screening out unfiltered sand and stones of the vibration bed, the stone filtering mechanism comprises a stone leaking channel arranged on the vibration bed, a cavity used for being communicated with the stone leaking channel is arranged below the vibration bed, a fan is further arranged below the vibration bed, the fan is communicated with the cavity through an arranged pipeline, and the pipeline is communicated with the cavity. The gravel screening device is additionally arranged at the bottom of the winnowing machine, winnowing impurity removal and stone and impurity removal are integrated, the defect that the winnowing machine cannot remove gravel is overcome, the defect that a stone removing machine cannot remove impurities through winnowing is overcome, the defect that the winnowing machine and the stone removing machine need to be independently arranged, and consequently the occupied area is too large is overcome, and the three-in-one effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crop screening equipment, in particular to a sand and stone removing air separator. Background Art

[0002] With the improvement of people's living standards, the output and sales of crops have increased greatly, such as tea, grains, etc., and there will be debris mixed in after the harvest of agricultural products. For example, due to the extensive production of tea, sand, soil, grains, nails and other debris, as well as tea leaves and dust will be mixed into the tea leaves during the processing. In the tea refining process, it is necessary to classify the dry raw tea leaves, remove the dust and impurities;

[0003] When screening with the winnowing machine, the lighter debris will be screened to the receiving funnel far from the air outlet, while the material and sand and gravel will fall into the receiving funnel close to the air outlet, and the sand and gravel cannot be screened out. If the equipment for screening sand and gravel is added, the overall floor space will be too large and the efficiency will be too low. On the contrary, if the sand and gravel screening equipment is used to remove the sand and gravel first, and the sand and gravel materials are separated by winnowing and impurities are removed, the floor space will also be too large and the efficiency will be too low.

[0004] Therefore, the utility model proposes a sand and stone removing air separator to solve the above problems. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A sand and gravel removal air separator comprises an air separator for preliminary screening of materials, a sand and gravel screening device is arranged below the discharge port of the air separator, the sand and gravel screening device comprises a vibrating bed for conveying materials screened by the air separator, at least one stone filtering mechanism is arranged in the vibrating bed for screening out the sand and gravel not filtered out by the vibrating bed, the stone filtering mechanism comprises a stone leakage channel arranged on the vibrating bed, a cavity for connecting to the stone leakage channel is arranged below the vibrating bed, a fan is also arranged below the vibrating bed, the fan is connected to the cavity through a pipe, so as to blow air into the stone leakage channel to blow the materials into the lower section of the vibrating bed.

[0007] Preferably, the stone leakage channel is inclined toward the rear section of the vibrating bed.

[0008] Preferably, a sand and gravel collection box is provided at the bottom of the vibrating bed, and the sand and gravel collection box is connected to the bottom of the cavity through a pipeline.

[0009] Preferably, a drawer sealingly matched with the sand and gravel collection box is provided in the sand and gravel collection box.

[0010] Preferably, the pipeline on the collection box is provided with a valve.

[0011] Preferably, a transfer bellows is further provided on one side of the fan, wherein a transfer chamber is provided in the transfer bellows, the transfer chamber and the fan are connected via a provided pipe, and a plurality of air supply pipes are provided between the transfer chamber and the cavity body to connect the two.

[0012] Preferably, two stone filtering mechanisms are provided, which are arranged on the vibrating bed at intervals.

[0013] Preferably, a feeding conveyor belt is provided on one side of the air separator, and a horizontal conveyor belt is provided on the top of the air separator for conveying the material conveyed by the feeding conveyor belt to the feed port of the air separator.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a wind separator for removing sand and gravel; by adding a sand and gravel screening device at the bottom of the wind separator, the wind separation and impurity removal and stone removal and impurity removal are combined into one, which makes up for the shortcoming that the wind separator cannot remove sand and gravel, and makes up for the defect that the stone removal machine cannot remove impurities by wind separation, and also makes up for the disadvantage that the two need to be set up separately, resulting in excessive occupation of space, thereby achieving the effect of three effects in one.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is another structural schematic diagram of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the sand and gravel screening device of the utility model.

[0020] Figure 4 It is another structural schematic diagram of the sand and gravel screening device in the utility model.

[0021] Figure 5 It is a structural schematic diagram of a drawer in the utility model.

[0022] Figure 6 It is a structural schematic diagram of the transfer chamber in the utility model.

[0023] In the figure: 1. air separator; 10. feeding conveyor belt; 11. horizontal conveyor belt; 2. sand and gravel screening device; 20. vibrating bed;

[0024] 3. Stone filtering mechanism; 30. Stone leakage channel; 31. Cavity; 32. Fan; 33. Sand and gravel collection box; 34. Drawer; 35. Valve; 36. Transfer bellows; 37. Transfer chamber; 38. Air supply duct. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 6 In an embodiment of the utility model, a sand and gravel air separator comprises a wind separator 1 for preliminary screening of materials, a sand and gravel screening device 2 is provided below the discharge port of the wind separator 1, the sand and gravel screening device 2 comprises a vibrating bed 20 for conveying materials screened by the wind separator 1, the vibrating bed 20 is provided with at least one filter stone mechanism 3 for screening out the sand and gravel not filtered out by the vibrating bed 20, the filter stone mechanism 3 comprises a stone leakage channel 30 arranged on the vibrating bed 20, and a filter stone mechanism 3 for connecting the stone leakage channel 3 is provided below the vibrating bed 20. 0 has a cavity 31, and a fan 32 is further provided under the vibrating bed 20. The fan 32 is connected to the cavity 31 through a provided pipe, so as to blow air into the stone leakage channel 30 to blow the material to the lower section of the vibrating bed 20; the present application adds a sand and gravel screening device 2 at the bottom of the air separator 1 to combine the air separation and impurity removal with the stone removal and impurity removal, which makes up for the shortcoming that the air separator 1 cannot remove sand and gravel, and makes up for the defect that the stone removal machine cannot remove impurities by air separation, and also makes up for the disadvantage that the two need to be set separately, resulting in excessive occupation of space, thereby achieving the effect of three effects in one.

[0027] Furthermore, the stone leakage channel 30 is inclined toward the rear section of the vibrating bed 20. By the inclined setting of the stone leakage channel 30, the material can be blown to the rear section of the vibrating bed 20. At the same time, the stone leakage channel 30 is inclined, and sand and gravel can slowly fall into the cavity 31 from the channel.

[0028] Furthermore, a sand and gravel collecting box 33 is provided at the bottom of the vibrating bed 20 . The sand and gravel collecting box 33 is connected to the bottom of the cavity 31 through a pipeline. Sand and gravel can be easily collected through the sand and gravel collecting box 33 .

[0029] Furthermore, a drawer 34 which is sealed with the sand and gravel collecting box 33 is provided. Directly setting a drawer 34 can facilitate the collection and cleaning of the screened sand and gravel. In addition, a valve 35 is provided on the pipe on the collecting box. When cleaning the sand and gravel in the drawer 34, if the drawer 34 is directly pulled out, the air in the cavity 31 will leak out, and it is necessary to stop the machine to clear the sand and gravel in the drawer 34. If the valve 35 is set for sealing, there is no need to stop the machine, and the valve 35 can be directly closed. After the drawer 34 is replaced, the valve 35 can be opened, and some of the sand and gravel accumulated inside will leak into the drawer 34.

[0030] Furthermore, a transfer bellows 36 is provided on one side of the fan 32, and a transfer chamber 37 is provided in the transfer bellows 36. The transfer chamber 37 and the fan 32 are connected to each other through a provided pipe, and a plurality of air supply pipes 38 are provided between the transfer chamber 37 and the cavity 31 to connect the two. By providing a transfer chamber 37, the transfer chamber 37 can divert the wind output by the fan 32 to the air supply pipe 38. Since a plurality of air supply pipes 38 are provided, the wind pressure in the cavity 31 can be more uniform, and the wind blown out from various parts of the stone leakage channel 30 can be more uniform and stable, which can improve the screening effect.

[0031] Furthermore, two stone filtering mechanisms 3 are provided, which are arranged at intervals on the vibrating bed 20. By setting up two groups of stone filtering mechanisms 3, the sand and gravel can be filtered more cleanly. The vibrating bed 20 part between the two stone filtering mechanisms 3 can be connected without using a screen, and a steel plate or a plate of other materials can be directly used for transition. This can simplify the equipment. If a screen is used, it is also necessary to remove the filtered debris, and corresponding components need to be added.

[0032] Furthermore, a loading conveyor belt 10 is provided on one side of the air separator 1, and a horizontal conveyor belt 11 is provided on the top of the air separator 1 for conveying the material conveyed by the loading conveyor belt 10 to the feed port of the air separator 1. By setting the loading conveyor belt 10 and the horizontal conveyor belt 11, the material can be conveyed to the air separator 1.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A sand and stone removal air separator, characterized in that: It includes an air separator for preliminary screening of materials, a sand and gravel screening device is provided below the discharge port of the air separator, the sand and gravel screening device includes a vibrating bed for conveying materials screened by the air separator, at least one stone filtering mechanism is provided in the vibrating bed for screening out the sand and gravel not filtered out by the vibrating bed, the stone filtering mechanism includes a stone leakage channel arranged on the vibrating bed, a cavity for connecting to the stone leakage channel is provided below the vibrating bed, a fan is also provided below the vibrating bed, the fan is connected to the cavity through a provided pipeline, so as to blow air into the stone leakage channel to blow the material into the lower section of the vibrating bed.

2. A sand and stone removal air separator according to claim 1, characterized in that: The stone leakage channel is inclined toward the rear section of the vibrating bed.

3. A sand and stone removal air separator according to claim 1, characterized in that: A sand and gravel collecting box is arranged at the bottom of the vibrating bed, and the sand and gravel collecting box is connected with the bottom of the cavity through a pipeline.

4. A sand and stone removal air separator according to claim 3, characterized in that: A drawer which is sealed and matched with the sand and gravel collecting box is arranged in the sand and gravel collecting box.

5. A sand and stone removal air separator according to claim 4, characterized in that: The pipe on the collection box is equipped with a valve.

6. The sand and stone removal air separator according to claim 1, characterized in that: A transfer bellows is also provided on one side of the fan, and a transfer cavity is provided in the transfer bellows. The transfer cavity and the fan are connected through a provided pipeline, and a plurality of air supply pipes are provided between the transfer cavity and the cavity body to connect the two.

7. The sand and stone removal air separator according to claim 1, characterized in that: There are two stone filtering mechanisms, which are arranged on the vibrating bed at intervals.

8. The sand and stone removal winnowing machine according to claim 1, characterized in that: A feeding conveyor belt is arranged on one side of the air separator, and a horizontal conveyor belt is arranged on the top of the air separator for conveying the materials conveyed by the feeding conveyor belt to the feed port of the air separator.

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