Blowing device of automatic grain sampler

Abstract

The utility model discloses a blowing device of an automatic grain sampler, which comprises a hopper, a conveying pipe is connected to a connector of the hopper, an air nozzle is arranged at one end, close to the connector, of the conveying pipe, and the air nozzle is communicated with a conveying pipe cavity of the conveying pipe to form a Venturi pipe. Grain in the hopper is blown away through the discharging port by supplying air through the air tap, and the vibrating reed is fixed to the discharging port and used for preventing the grain from being blocked at the discharging port. The air nozzle is communicated with the conveying pipe cavity of the conveying pipe to form a Venturi pipe, air is supplied to the air nozzle to blow away grain in the hopper through the discharging port, meanwhile, airflow of the air nozzle 3 enters the conveying pipe cavity to continuously blow the vibrating reed, the vibrating reed continuously vibrates under the action of the airflow, and when the grain is blocked at the discharging port, the air nozzle is opened, so that the air nozzle is closed. And the material smoothly passes through the discharge hole under the vibration of the vibration sheet, so that the technical problem that the material is blocked at the discharge hole of the funnel-shaped hopper of the grain sampler in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of blowing materials for an automatic grain sampler, in particular to a blowing material device for an automatic grain sampler. Background Art

[0002] Chinese utility model patent CN201820970188.6 discloses a solid material blowing device for unmanned aerial vehicles, including a material box, a blowing barrel, a conical barrel and a fan, wherein the fan is arranged at one end of the blowing barrel, a discharge port is arranged at the lower end of the material box, the blowing barrel is connected with the discharge port, the material enters the blowing barrel from the discharge port and is blown out of the blowing barrel by the fan, the conical barrel is arranged in the blowing barrel, adjacent to the fan, one end of the conical barrel is fitted with the inner wall of the blowing barrel, the other end has a smaller opening and is located at the lower edge of the discharge port. The blowing device is provided with a conical barrel, the conical barrel is arranged in the blowing barrel, adjacent to the fan, one end of the conical barrel is fitted with the inner wall of the blowing barrel, the other end has a smaller opening and is located at the lower edge of the discharge port, the wind of the fan is blown in from the large mouth end of the conical barrel and blown out from the small mouth end, so that a negative pressure area will be formed at the discharge port, which will not only not block the material discharge, but also form a certain suction force to promote the material discharge, so the material discharge effect is significantly improved.

[0003] In the above technical solution, the material is blown away from the discharge port of the hopper through the structure of the venturi tube. However, since the hopper is funnel-shaped, the material is easily blocked at the discharge port of the hopper.

[0004] Similarly, in the present application, the hopper of the grain sampler is also funnel-shaped, and there is also a phenomenon of material blockage at the discharge port. Summary of the invention

[0005] The purpose of the embodiment of the utility model is to provide a blowing device for an automatic grain sampler, aiming to solve the technical problem that the funnel-shaped hopper of the grain sampler in the prior art has the phenomenon of material blockage at the discharge port.

[0006] The utility model embodiment is achieved in this way:

[0007] A blowing device for an automatic grain sampler comprises a hopper, a conveying pipe is connected to the interface of the hopper, an air nozzle is provided at one end of the conveying pipe close to the interface, the air nozzle is connected to the conveying pipe cavity of the conveying pipe to form a venturi tube, and air is supplied from the air nozzle to blow the grain in the hopper away through a discharge port, and a vibrating plate is fixed at the discharge port to prevent the grain from being blocked at the discharge port.

[0008] Furthermore, the hopper is in the shape of an inclined cone, and the discharge port is located outside the downward projection of the hopper feed port.

[0009] Furthermore, the conveying pipe and the hopper are welded together at the interface.

[0010] Furthermore, the conveying pipe and the hopper are threadedly connected together at the interface.

[0011] Furthermore, the vibration plate is a thin metal plate, and the ratio of its thickness to length is ≤0.03.

[0012] Furthermore, the length of the vibration plate is greater than the distance from the intersection of the air nozzle and the conveying tube cavity to the discharge port.

[0013] Furthermore, the end of the delivery tube is provided with a connection port for connecting to an external pipeline or a sample container.

[0014] The positive effect of the utility model is that a venturi tube is formed by connecting the conveying tube cavity of the conveying pipe through the air nozzle, and air is supplied at the air nozzle to blow the grain in the hopper away through the discharge port. At the same time, the airflow from the air nozzle 3 enters the conveying tube cavity and continuously blows the vibration plate, so that the vibration plate continuously vibrates under the action of the airflow. When grain is blocked at the discharge port, the blocked grain will be loosened under the vibration of the vibration plate, and then unblocked and smoothly pass through the discharge port, thereby solving the technical problem of the funnel-shaped hopper of the grain sampler in the prior art, in which the material is blocked at the discharge port; at the same time, the vibration of the vibration plate will be transmitted to the bottom of the hopper through the connection between the vibration plate and the discharge port, so that the bottom of the hopper is always in a vibrating state. In this state, even if a large amount of grain enters the silo instantly, it will be blocked because it cannot pass through the discharge port instantly. Even if there is an instantaneous blockage, it can be gradually unblocked under the action of vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic front view of the structure of a blowing device of an automatic grain sampler of the utility model;

[0016] Figure 2 yes Figure 1 A bottom view of a blowing device of an automatic grain sampler of the utility model is shown in FIG.

[0017] Figure 3 yes Figure 2 The AA sectional view of a blowing device of an automatic grain sampler of the utility model is shown in FIG.

[0018] Legend: 1—hopper, 101—silo, 102—interface, 103—discharge port, 2—conveying pipe, 201—connection port, 202—conveying pipe cavity, 203—vibrating plate, 3—air nozzle. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] like Figures 1 to 3 As shown, a structural diagram of a blowing device of a grain automatic sampler includes:

[0023] A hopper 1, an interface 102 of the hopper is connected to a conveying pipe 2, an end of the conveying pipe 2 close to the interface 102 is provided with an air nozzle 3, the air nozzle 3 is connected with a conveying pipe cavity 202 of the conveying pipe to form a venturi tube, and air is supplied through the air nozzle 3 to blow away the grain in the hopper 1 through a discharge port 103, and a vibrating plate 203 is fixed at the discharge port 103 to prevent the grain from being blocked at the discharge port;

[0024] In the implementation mode of the present invention, a venturi tube is formed by connecting the air nozzle 3 with the conveying tube cavity 202 of the conveying pipe, and air is supplied through the air nozzle 3 to blow the grain in the hopper 1 away through the discharge port 103. At the same time, the airflow from the air nozzle 3 enters the conveying tube cavity 202 and continuously blows the vibration plate 203, so that the vibration plate 203 vibrates continuously under the action of the airflow. When grain is blocked at the discharge port 103, the blocked grain will be loosened by the vibration of the vibration plate 203, and then unblocked and smoothly pass through the discharge port. , thereby solving the technical problem of the funnel-shaped hopper of the grain sampler in the prior art, which has the phenomenon of material blockage at the discharge port; at the same time, the vibration of the vibrating plate 203 will be transmitted to the bottom of the hopper 1 through the connection between the vibrating plate 203 and the discharge port 103, so that the bottom of the hopper 1 is always in a vibrating state. In this state, even if a large amount of grain enters the silo 101 instantly, it will be blocked because it cannot pass through the discharge port instantly. Even if there is an instantaneous blockage, it can be gradually unblocked under the action of vibration.

[0025] Specifically, Figures 1 to 3As shown, a blowing device of an automatic grain sampler comprises: a hopper 1, an interface 102 of the hopper is connected to a conveying pipe 2, an end of the conveying pipe 2 close to the interface 102 is provided with an air nozzle 3, the air nozzle 3 is connected with a conveying pipe cavity 202 of the conveying pipe to form a venturi tube, and air is supplied through the air nozzle 3 to blow away the grain in the hopper 1 through a discharge port 103, and a vibrating plate 203 is fixed at the discharge port 103 to prevent the grain from being blocked at the discharge port;

[0026] The hopper 1 is in the shape of an inclined cone, and the discharge port 103 is located outside the downward projection of the feed port of the hopper 1; such a design allows the present application to avoid the carriage when the automatic grain sampler descends to the carriage detection position, thereby increasing the depth of the grain sampler entering the grain in the carriage, and providing a wider range of choices for sampling grain samples at different depths.

[0027] The conveying pipe 2 and the hopper 1 are welded together at the interface 102;

[0028] Preferably, the delivery pipe 2 and the hopper 1 are threadedly connected together at the interface 102;

[0029] The vibration plate 203 is a thin metal plate, and the ratio of its thickness to length is ≤0.03;

[0030] The length of the vibration plate 203 is greater than the distance from the intersection of the air nozzle 3 and the conveying tube cavity 202 to the discharge port;

[0031] The end of the delivery tube 2 is provided with a connection port 201 for connecting an external pipeline or a sample container;

[0032] The connection port 201 is provided with an internal thread or an external thread.

[0033] The foregoing has broadly outlined some aspects and features of various embodiments, which should be construed as merely illustrative of various potential applications. Other beneficial results may be obtained by applying the disclosed information in different ways or by combining various aspects of the disclosed embodiments. Other aspects and a more comprehensive understanding may be obtained by reference to the detailed description of the exemplary embodiments in conjunction with the accompanying drawings, within the scope defined by the claims.

[0034] The above embodiments provide a detailed description of the present invention. Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions, reductions, and substitutions made by relevant technicians within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A blowing device for an automatic grain sampler, characterized in that: The blowing device includes a hopper, a conveying pipe is connected to the interface of the hopper, an air nozzle is provided at one end of the conveying pipe close to the interface, the air nozzle is connected to the conveying pipe cavity of the conveying pipe to form a venturi tube, and air is supplied from the air nozzle to blow the grain in the hopper away through the discharge port, and a vibrating plate is fixed at the discharge port to prevent the grain from being blocked at the discharge port.

2. The blowing device of the grain automatic sampler according to claim 1 is characterized in that: The hopper is in the shape of an inclined cone, and the discharge port is located outside the downward projection of the hopper feed port.

3. The blowing device of the grain automatic sampler according to claim 2 is characterized in that: The conveying pipe and the hopper are welded together at the interface.

4. The blowing device of the grain automatic sampler according to claim 2 is characterized in that: The conveying pipe and the hopper are threadedly connected together at the interface.

5. A blowing device for an automatic grain sampler according to any one of claims 1 to 4, characterized in that: The vibration sheet is a thin metal sheet, and the ratio of its thickness to its length is ≤0.

03.

6. The blowing device of the grain automatic sampler according to claim 5, characterized in that: The length of the vibration plate is greater than the distance from the intersection of the air nozzle and the conveying tube cavity to the discharge port.

7. The blowing device of the grain automatic sampler according to claim 6, characterized in that: The end of the delivery tube is provided with a connection port for connecting an external pipeline or a sample container.

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