Rice detection sampling device

Abstract

The rice detecting and sampling device comprises a negative-pressure shell, the lower end of the negative-pressure shell is detachably connected with a storage tank with an opening in the upper end, a negative-pressure pump is installed in the negative-pressure shell, and the inlet end of the negative-pressure pump communicates with the storage tank; the upper part of the storage tank is outwards provided with a negative pressure connecting pipe, the negative pressure connecting pipe is detachably connected with a negative pressure pipe, the free end of the negative pressure pipe is communicated with a negative pressure hose, and the free end of the negative pressure hose is communicated with a negative pressure joint; the negative pressure connector is detachably connected with a plurality of extension pipes which are detachably connected end to end in sequence, the head pipe is detachably connected with the free ends of the negative pressure connector or the extension pipes, the free end of the head pipe is communicated with a one-way pipe, a plurality of elastic lobes are inwards arranged at the opening end of the one-way pipe, and the elastic lobes form a cone with the tip facing inwards. A ventilation gap is reserved between every two elastic lobes. The deep rice sampling device is suitable for efficient and accurate sampling of deep rice, and the accuracy and reliability of rice sampling detection can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of sampling detection, and in particular to a rice detection sampling device. Background Art

[0002] With the increasing awareness of food safety, the quality monitoring of staple foods such as rice has become particularly important. As the main food source for more than half of the world's population, the quality of rice is directly related to the health and quality of life of consumers. In order to ensure that the rice circulating on the market meets safety standards, strict testing must be carried out during production, processing and storage. Among them, sampling and testing is one of the key steps in evaluating rice quality.

[0003] Traditionally, rice sampling and testing usually adopts physical methods, that is, using a special sampler to extract a certain amount of samples from the piled or packaged rice for analysis. This method includes manual operation and mechanical assistance. Manual operation is generally suitable for small batches or bagged rice. By randomly selecting several bags, special tools such as long-handled spoons or probes are inserted into the rice pile to obtain rice samples from the surface to the middle layer. The mechanical-assisted method is mostly used in large-scale production and storage environments, using electric or pneumatic devices to drive the sampler deep into the rice pile to meet deeper sampling needs.

[0004] However, the current commonly used sampler design is mainly for shallow or medium-depth rice piles. For those deep warehouses, due to factors such as equipment length limitations and increased operational difficulty, conventional samplers often have difficulty effectively reaching the bottom area, and thus cannot accurately obtain the actual condition of the rice at this level. This limitation may result in potential problems in the bottom rice (such as mildew, insect pests or contamination) not being discovered in time, which in turn affects the authenticity and reliability of the overall rice quality assessment results. Summary of the invention

[0005] The invention aims to provide a rice detection sampling device, which is suitable for efficient and accurate sampling of deep-layer rice and helps to improve the accuracy and reliability of rice sampling detection.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a rice detection sampling device, comprising a negative pressure shell, the lower end of the negative pressure shell is detachably connected to a storage tank with an upper end opening, the lower end of the negative pressure shell is downwardly provided with a connecting ring that covers the storage tank and is detachably connected thereto, a negative pressure cavity is provided in the negative pressure shell, an air outlet communicating with the negative pressure cavity is provided outwardly on the outer side of the negative pressure shell, a negative pressure pump is installed in the negative pressure cavity, the inlet end of the negative pressure pump is communicated with the storage tank, and the outlet end of the negative pressure pump is communicated with the air outlet;

[0007] An upper part of the storage tank is provided with a negative pressure connecting pipe communicating with its interior outward. The negative pressure connecting pipe is detachably connected with a negative pressure pipe. A free end of the negative pressure pipe is communicated with a negative pressure hose. A free end of the negative pressure hose is communicated with a negative pressure joint. An operating handle is arranged outward on the negative pressure connector.

[0008] The negative pressure joint is detachably connected with a plurality of extension pipes detachably connected end to end in sequence. The negative pressure joint is also provided with a header pipe detachably connected with a free end of the negative pressure joint or the extension pipe. A free end of the header pipe is communicated with a one-way pipe. A plurality of elastic lobes are arranged inward at an opening end of the one-way pipe. The elastic lobes form a cone with a pointed head facing inward. An air-permeable gap is left between every two elastic lobes.

[0009] By adopting the above technical solution, when sampling rice, first connect the header pipe with the negative pressure connector. By operating the operating handle on the negative pressure connector, insert the header pipe downward into the rice pile. During the process, the rice pushes the elastic lobes to open upward. Subsequently, replace the extension pipe and connect it with the negative pressure connector, and connect the extension pipe with the header pipe. Continue to insert the extension pipe and the header pipe downward into the rice until the required depth is reached. After the insertion is completed, slightly lift the extension pipe and the header pipe upward to make the rice push the elastic lobes to close downward. Subsequently, start the negative pressure pump to generate negative pressure in the storage tank. Through the negative pressure, the rice in the extension pipe and the header pipe sequentially enters the storage tank through the negative pressure hose and the negative pressure pipe, and accumulates layer by layer from bottom to top until all the rice in the header pipe is sucked away. During the process, the air-permeable gap between the elastic lobes enables the air in the rice to enter the header pipe, preventing a strong negative pressure from being generated in the header pipe to open the elastic lobes. After the sampling is completed, the rice in the storage tank can be detected layer by layer to judge the quality of the rice.

[0010] A further setting of the present invention is that a lower end of the negative pressure housing is provided with an isolation mesh cover communicated with an inlet end of the negative pressure pump downward. The aperture of the isolation mesh cover is used to prevent large-particle substances from passing through.

[0011] A further setting of the present invention is that an outer thread is arranged on an outer periphery of an opening end of the storage tank, and an inner thread screwed with the opening end of the storage tank is arranged on an inner wall of the connecting collar.

[0012] The present invention is further configured as follows: one end of the negative pressure tube away from the negative pressure hose is connected to a connecting sleeve which is coated with the negative pressure connecting tube, an annular groove is provided in the middle of the negative pressure connecting tube, an installation groove is provided inwardly on the outer wall of the connecting sleeve, a through opening which penetrates the connecting sleeve is provided at the bottom of the installation groove at the annular groove, a connecting seesaw is rotatably connected in the installation groove, the middle part of the connecting seesaw is rotatably connected to the installation groove, a hook which cooperates with the annular groove is provided inwardly at the through opening position of the connecting seesaw, and a supporting spring is provided between the connecting seesaw away from the hook and the bottom of the installation groove.

[0013] The present invention is further configured as follows: the hook is away from the connecting seesaw and is chamfered on one side facing the through opening.

[0014] The present invention is further configured as follows: one end of each extension tube and the inner wall of the end of the head tube away from the one-way tube are provided with internal threads, and the free end of the negative pressure joint and the free end of each extension tube are provided with an inner connecting tube with an outer diameter threadedly connected to the inner wall of the extension tube or the head tube.

[0015] The present invention is further configured as follows: the one-way tube and each elastic leaf are made of polyurethane plastic material.

[0016] The present invention is further configured as follows: a handle is provided at the upper end of the negative pressure housing.

[0017] The present invention is further configured as follows: the storage tank is made of a transparent material, and a capacity scale is provided on an outer wall of the storage tank.

[0018] In summary, the present invention has the following beneficial effects:

[0019] First, the present invention adopts multiple extension tubes to be connected with the head tube and then inserted into the rice pile. The number of extension tubes can be freely selected according to the depth of the rice. The negative pressure pump is used to generate negative pressure to suck the rice into the storage tank for testing. It is suitable for efficient and accurate sampling of deep rice, which helps to improve the accuracy and reliability of rice sampling and testing;

[0020] Secondly, the present invention ingeniously arranges elastic leaves with the tip of the leaves tapered upward in the one-way tube. After contacting the rice, the rice can push the leaves to open and enter the head tube. After the insertion is completed, the extension tube and the head tube are slightly lifted upward, so that the rice pushes the elastic leaves downward to close, thereby preventing the rice from continuously entering the head tube during negative pressure extraction and preventing the rice at the bottom from continuously entering the head tube to affect the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is an exploded view for illustrating the connection of the present invention;

[0023] Figure 3 It is a partial cross-sectional view used to show the internal structure of the negative pressure housing;

[0024] Figure 4 It is an exploded view used to show the connection rocker in the mounting slot;

[0025] Figure 5 Mainly used to demonstrate the elastic leaves in one-way tubes.

[0026] In the figure: 1. negative pressure shell; 11. handle; 12. connecting ring; 13. negative pressure chamber; 14. air outlet; 15. power cord; 16. isolation mesh cover; 2. storage tank; 21. negative pressure connecting pipe; 22. annular slot; 3. negative pressure pump; 4. negative pressure pipe; 41. connecting sleeve; 42. mounting slot; 43. through port; 44. connecting rocker; 45. hook; 46. support spring; 47. negative pressure hose; 48. negative pressure connector; 49. operating handle; 5. extension pipe; 51. inner connecting pipe; 6. head pipe; 7. one-way pipe; 71. elastic leaf; 72. air permeable gap. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example, see Figure 1-5 A rice detection sampling device comprises a negative pressure shell 1, a handle 11 is arranged at the upper end of the negative pressure shell 1, a storage tank 2 with an upper end opening is detachably connected to the lower end of the negative pressure shell 1, the storage tank 2 is made of transparent material, and a capacity scale is arranged on the outer wall of the storage tank 2, a connecting ring 12 is arranged downwardly at the lower end of the negative pressure shell 1 to cover the storage tank 2 and is detachably connected to the storage tank 2, an outer periphery of the open end of the storage tank 2 is arranged with an external thread, and an inner wall of the connecting ring 12 is arranged with an internal thread threadedly connected to the open end of the storage tank 2. A negative pressure chamber 13 is arranged in the negative pressure shell 1, and an air outlet 14 connected to the negative pressure chamber 13 is arranged outwardly on the outer side of the negative pressure shell 1, a negative pressure pump 3 is installed in the negative pressure chamber 13, and the negative pressure shell 1 is connected to a power cord 15 for providing electric energy to the negative pressure pump 3, the inlet end of the negative pressure pump 3 is connected to the storage tank 2, and the outlet end of the negative pressure pump 3 is connected to the air outlet 14. When the negative pressure pump 3 works, negative pressure is generated in the storage tank 2, and an isolation mesh cover 16 connected to the inlet end of the negative pressure pump 3 is arranged downward at the lower end of the negative pressure shell 1, and the aperture of the isolation mesh cover 16 is used to prevent large particles from passing through.

[0032] The upper part of the storage tank 2 is provided with a negative pressure connecting pipe 21 connected to the inside thereof, and the negative pressure connecting pipe 21 is detachably connected to a negative pressure pipe 4, and one end of the negative pressure pipe 4 away from the negative pressure hose 47 is connected to a connecting sleeve 41 of the outer negative pressure connecting pipe 21, and a circle of annular grooves 22 are provided in the middle of the negative pressure connecting pipe 21, and an installation groove 42 is provided inwardly on the outer wall of the connecting sleeve 41, and a through-port 43 penetrating the connecting sleeve 41 is provided at the bottom of the installation groove 42 at the annular groove 22, and a rotationally connected one of the connecting sleeves 41 is provided in the installation groove 42. The connecting seesaw 44 is connected to the mounting groove 42 in the middle thereof, and a hook 45 cooperating with the annular groove 22 is arranged inwardly at the position of the through-port 43 of the connecting seesaw 44, and the hook 45 is away from the connecting seesaw 44 and is cut at one side toward the through-port 43, and a supporting spring 46 is arranged between the connecting seesaw 44 away from the hook 45 and the bottom of the mounting groove 42, and when the hook 45 is extended into the position of the annular groove 22, the supporting spring 46 pushes the connecting seesaw 44 upward to make the hook 45 engage with the annular groove 22. The free end of the negative pressure pipe 4 is connected to a negative pressure hose 47, and the free end of the negative pressure hose 47 is connected to a negative pressure connector 48, and two operating handles 49 are arranged outwardly at the negative pressure connector.

[0033] The negative pressure connector 48 is detachably connected to a plurality of extension tubes 5 which are detachably connected in sequence and terminate in a sequence, and also includes a head tube 6 which is detachably connected to the negative pressure connector 48 or the free end of the extension tube 5. One end of each extension tube 5 and the inner wall of the end of the head tube 6 away from the one-way tube 7 are provided with internal threads, and the free end of the negative pressure connector 48 and the free end of each extension tube 5 are provided with an inner connecting tube 51 whose outer diameter is threadedly connected to the inner wall of the extension tube 5 or the head tube 6. The free end of the head tube 6 is connected to a one-way tube 7, and five elastic leaflets 71 are arranged inwardly at the open end of the one-way tube 7. The one-way tube 7 and each elastic leaflet 71 are made of polyurethane plastic material. The elastic leaflets 71 form a cone with the pointed end facing inward, so that when rice is inserted downward, the rice can easily push the elastic leaflets 71 to open upward, and when it is lifted upward, the five elastic leaflets 71 are closed again under the weight of the rice to prevent rice from entering during the negative pressure suction process. A breathable gap 72 is left between every two elastic leaflets 71 to facilitate the passage of air.

[0034] Usage: When sampling rice, first connect the head tube 6 to the negative pressure connector, and insert the head tube 6 downward into the rice pile by operating the operating handle 49 on the negative pressure connector. During the process, the rice pushes the elastic leaf 71 upward to open, then replace the extension tube 5 and connect it to the negative pressure connector, and connect the extension tube 5 to the head tube 6, and continue to insert the extension tube 5 and the head tube 6 downward into the rice until the required depth is reached. After the insertion is completed, slightly lift the extension tube 5 and the head tube 6 upward to make the rice push the elastic leaf 71 downward to close, and then start The negative pressure pump 3 is driven to generate negative pressure in the storage tank 2. The negative pressure causes the rice in the extension tube 5 and the head tube 6 to enter the storage tank 2 through the negative pressure hose 47 and the negative pressure tube 4 in turn, and accumulate layer by layer from bottom to top until all the rice in the head tube 6 is sucked away. During the process, the air permeable gap 72 between the elastic leaf petals 71 allows the air in the rice to pass into the head tube 6, preventing the generation of strong negative pressure in the head tube 6 to open the elastic leaf petals 71. After the sampling is completed, the rice in the storage tank 2 can be inspected layer by layer to determine the quality of the rice.

[0035] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A rice detection sampling device, comprising a negative pressure housing (1), the lower end of the negative pressure housing (1) being detachably connected to a storage tank (2) with an upper end opening, characterized in that: The lower end of the negative pressure housing (1) is provided with a connecting ring (12) which covers the storage tank (2) and is detachably connected thereto; a negative pressure chamber (13) is provided inside the negative pressure housing (1); an air outlet (14) which is in communication with the negative pressure chamber (13) is provided outwardly from the outer side of the negative pressure housing (1); a negative pressure pump (3) is installed in the negative pressure chamber (13); the inlet end of the negative pressure pump (3) is in communication with the storage tank (2); and the outlet end of the negative pressure pump (3) is in communication with the air outlet (14); The upper part of the storage tank (2) is provided with a negative pressure connecting pipe (21) communicating with the interior thereof, the negative pressure connecting pipe (21) is detachably connected to the negative pressure pipe (4), the free end of the negative pressure pipe (4) is connected to a negative pressure hose (47), the free end of the negative pressure hose (47) is connected to a negative pressure connector (48), and the negative pressure connector is provided with an operating handle (49) outwardly; The negative pressure joint (48) is detachably connected to a plurality of extension tubes (5) which are detachably connected in sequence and terminate in a manner, and further comprises a head tube (6) detachably connected to the free end of the negative pressure joint (48) or the extension tube (5), the free end of the head tube (6) being connected to a one-way tube (7), the open end of the one-way tube (7) being provided with a plurality of elastic leaflets (71) facing inward, the elastic leaflets (71) forming a cone with the pointed end facing inward, and an air permeable gap (72) being left between every two elastic leaflets (71).

2. A rice detection sampling device according to claim 1, characterized in that: An isolation mesh cover (16) is disposed downwardly at the lower end of the negative pressure housing (1) and is communicated with the inlet end of the negative pressure pump (3). The aperture of the isolation mesh cover (16) is used to prevent large particles from passing through.

3. A rice detection sampling device according to claim 1, characterized in that: The outer periphery of the open end of the storage tank (2) is provided with an external thread, and the inner wall of the connecting collar (12) is provided with an internal thread which is threadedly connected to the open end of the storage tank (2).

4. A rice detection sampling device according to claim 1, characterized in that: One end of the negative pressure pipe (4) away from the negative pressure hose (47) is connected to a connecting sleeve (41) which is covered with the negative pressure connecting pipe (21); an annular groove (22) is provided in the middle of the negative pressure connecting pipe (21); an installation groove (42) is provided inwardly on the outer wall of the connecting sleeve (41); a through opening (43) penetrating the connecting sleeve (41) is provided at the bottom of the installation groove (42) at the annular groove (22); a connecting seesaw (44) is rotatably connected in the installation groove (42); a middle part of the connecting seesaw (44) is rotatably connected to the installation groove (42); a hook (45) matching the annular groove (22) is provided inwardly on the connecting seesaw (44) at the position of the through opening (43); a supporting spring (46) is provided between the connecting seesaw (44) away from the hook (45) and the bottom of the installation groove (42).

5. A rice detection sampling device according to claim 4, characterized in that: The hook (45) is away from the connecting seesaw (44) and is chamfered on one side facing the through opening (43).

6. A rice detection sampling device according to claim 1, characterized in that: One end of each extension tube (5) and the inner wall of one end of the head tube (6) away from the one-way tube (7) are both provided with internal threads, and the free end of the negative pressure joint (48) and the free end of each extension tube (5) are both provided with an inner connecting tube (51) with an outer diameter threadedly connected to the inner wall of the extension tube (5) or the head tube (6).

7. A rice detection sampling device according to claim 1, characterized in that: The one-way tube (7) and each elastic leaf (71) are made of polyurethane plastic material.

8. A rice detection sampling device according to claim 1, characterized in that: A handle (11) is provided at the upper end of the negative pressure housing (1).

9. A rice detection sampling device according to claim 1, characterized in that: The storage tank (2) is made of a transparent material, and the outer wall of the storage tank (2) is provided with a capacity scale.

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