Discharging plate structure and anti-breaking discharger for grain quality inspection

Abstract

The utility model relates to an unloading plate structure and an anti-breaking unloader for grain quality inspection, and belongs to the technical field of unloaders. The air suction pipe is connected with the negative pressure air suction pipe and conveys grains through negative pressure; the grain conveying pipe is used for conveying grains; the discharging plate is arranged at an outlet of the discharger shell, and the discharging plate is movably connected with the discharger shell; and the driving part is used for driving the unloading plate to rotate. The unloading plate and the driving part are arranged in the device, and the driving part is matched with the negative pressure system, so that when grains are stacked to reach the preset weight, the gravity triggers the unloading plate to be opened stably, and the situation that the grains are broken due to instant impact, and grain detection data are influenced is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of discharging devices, and particularly relates to a discharging plate structure and a non-breaking discharging device for grain quality inspection. Background Art

[0002] Grain inspection is an important link to ensure that the grain quality meets the standards. When inspecting grains, it is necessary to transfer the samples from the conveying equipment to the inspection containers. The traditional discharging devices generally have the following defects:

[0003] High grain breakage rate: Most of the existing discharging devices adopt gravity direct fall or mechanical gate control. When the grains fall, they collide with the hard shell, resulting in grain breakage and affecting the inspection accuracy. Coarse discharging control: The traditional discharging plates mostly rely on manual adjustment or fixed opening design, and cannot dynamically adjust the discharging speed according to the grain accumulation, which is easy to cause blockage or instantaneous over-discharging. Low filtration efficiency: In the negative pressure conveying system, the conventional filter screens are easily blocked by debris and have insufficient filtration accuracy, resulting in distortion of subsequent inspection data. High maintenance cost: The existing devices have complex structures, and the driving components are easily eroded by grain dust. The average maintenance cycle is less than 3 months, which affects the continuous operation efficiency of the equipment. Summary of the Utility Model

[0004] The purpose of this application is to overcome the defects of large impact force, low control accuracy, poor filtration efficiency and high maintenance cost in the existing discharging devices, and provide a special discharging device with high precision, low damage and long service life for grain quality inspection.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A discharging plate structure, comprising: a discharging plate arranged at the outlet of the discharging device housing, the discharging plate is hingedly connected to the discharging device housing through a hinge shaft and can rotate around the hinge shaft to open and close the outlet for grain discharging; a driving component fixed on the discharging device housing for providing a closing moment to the discharging plate and driving the discharging plate to close to the discharging device housing.

[0007] Further, a fixing frame is fixed on the outlet side of the discharging device housing, the hinge shaft is arranged on the fixing frame, and the driving component is fixed on the discharging device housing.

[0008] Further, the driving component includes a self-suction switch plate positioning bolt and a counterweight disk. One end of the self-suction switch plate positioning bolt is fixedly connected to the discharging plate, the counterweight disk is sleeved on the self-suction switch plate positioning bolt and is locked by nuts on both sides;

[0009] The center of gravity of the counterweight disk deviates from the center line of the hinge shaft to generate a moment for driving the discharging plate to close by gravity.

[0010] Furthermore, the driving component further includes a counterweight plate and a torsion spring;

[0011] One end of the counterweight plate is fixedly connected to the discharge plate, and the included angle between the counterweight plate and the discharge plate is 120 degrees to 160 degrees;

[0012] The torsion spring is sleeved on the hinge shaft, one end of which is connected to the discharge plate and the other end is connected to the fixed bracket to provide an elastic moment in the closing direction;

[0013] The self - suction switch plate positioning bolt is threadedly connected to the end of the counterweight plate, and its end abuts against the discharge device housing to limit the maximum opening degree of the discharge plate.

[0014] Furthermore, the driving component further includes a compression spring. The compression spring is sleeved on the end of the self - suction switch plate positioning bolt, one end of which abuts against the counterweight plate and the other end abuts against the discharge device housing;

[0015] The telescopic direction of the compression spring is parallel to the axial direction of the self - suction switch plate positioning bolt to assist the closing of the discharge plate through elastic force.

[0016] This application also provides an anti - crushing discharge device for grain quality inspection, including: the above - mentioned discharge plate structure for discharging grains;

[0017] A discharge device housing, inside which a grain accommodation cavity is formed, and the discharge plate is arranged at the bottom outlet of the grain accommodation cavity;

[0018] An air suction pipe, connected to an external negative - pressure device, for transporting grains through negative - pressure air flow;

[0019] A grain delivery pipe, communicating with the top of the discharge device housing, for introducing grains into the grain accommodation cavity.

[0020] Furthermore, a filter cylinder is arranged inside the discharge device housing. The filter cylinder includes a cloth - bag fixing cylinder and a cloth bag sleeved on its outer wall;

[0021] A plurality of circumferentially evenly distributed air - permeable holes with a pore diameter of 0.5 - 3 mm are arranged on the barrel wall of the cloth - bag fixing cylinder;

[0022] One end of the filter cylinder is connected to the air suction pipe in a through - connection manner for separating the air flow from the grains.

[0023] Furthermore, an anti - collision cushion layer made of silica gel material is adhered to the inner wall of the discharge device housing, and the thickness of the anti - collision cushion layer is 1 - 5 mm.

[0024] Furthermore, a connection plate is provided at the top of the unloader housing. The connection plate is fixed to the unloader housing through circumferentially evenly distributed connection bolts. The suction air pipe is hermetically connected to the connection plate through a flange.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0026] The present utility model provides a discharge plate mechanism and an anti-breakage unloader for grain quality inspection. In the device of the present utility model, a discharge plate and a driving component are provided. Through the cooperation of the driving component and the negative pressure system, when the accumulated grain reaches the preset weight, the gravity triggers the discharge plate to open smoothly, avoiding grain breakage caused by instant impact and affecting the grain detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of Embodiment 1 of the discharge plate mechanism of the present application;

[0028] Figure 2 is a schematic structural diagram of Embodiment 2 of the discharge plate mechanism of the present application;

[0029] Figure 3 is a schematic structural diagram of Embodiment 3 of the discharge plate mechanism of the present application;

[0030] Figure 4 is a schematic structural diagram of the unloader device of the present application;

[0031] Figure 5 is a schematic structural diagram of the filter cartridge of the unloader device of the present application.

[0032] In the figure: 805, grain conveying pipe; 808, suction air pipe; 841, unloader housing; 842, discharge plate; 843, fixing bracket; 844, self-priming switch plate positioning bolt; 846, connection plate; 848, connection bolt; 850, driving component; 851, counterweight plate; 852, nut; 853, counterweight plate; 854, torsion spring; 855, compression spring; 870, filter cartridge; 871, cloth bag fixing cylinder; 872, cloth bag; 873, hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further describes the present utility model in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] Embodiment 1

[0035] As Figure 1As shown in the figure, the present utility model provides an embodiment of a discharge plate structure, including: a discharge plate 842 disposed at the outlet of the discharge device housing 841. The discharge plate 842 is hinged to the discharge device housing 841 through a hinge shaft and can rotate around the hinge shaft to open and close the outlet for discharging grains; a driving member 850 fixed on the discharge device housing 841 for providing a closing moment to the discharge plate 842 to drive the discharge plate 842 to close to the discharge device housing 841. A fixing bracket 843 is fixed on the outlet side of the discharge device housing 841. The hinge shaft is disposed on the fixing bracket 843, and the driving member 850 is fixed on the discharge device housing 841.

[0036] The driving member 850 includes a self-priming switch plate positioning bolt 844 and a counterweight disk 851. One end of the self-priming switch plate positioning bolt 844 is fixedly connected to the discharge plate 842. The counterweight disk 851 is sleeved on the self-priming switch plate positioning bolt 844 and is locked by nuts 852 on both sides. The center of gravity of the counterweight disk 851 deviates from the center line of the hinge shaft to generate a moment for driving the discharge plate 842 to close through gravity.

[0037] In the embodiment of the present application, the nuts 852 are used to lock the counterweight disk 851. By adjusting the position of the counterweight disk 851, the opening and closing moment of the discharge plate 842 can be changed, so that the opening angle between the discharge plate 842 and the discharge device housing 841 is within a reasonable range. When the negative pressure system is used to convey grains in the discharge device housing 841 under negative pressure, the negative pressure in the discharge device housing 841 causes the discharge plate 842 to quickly close, meeting the requirement that grains accumulate in the discharge device housing. When it is necessary to release the grains, the negative pressure in the discharge device housing 841 is disconnected, and the gravity of the grains in the discharge device housing 841 exceeds the torque generated by the counterweight, causing the discharge plate 842 to automatically open for discharging. After the discharging is completed, the torque generated by the gravity of the discharge plate 842 is less than the torque generated by the gravity of the counterweight disk 851. The driving member 850 is used to drive the discharge plate 842 to approach the discharge device housing 841, reducing the opening angle between the discharge plate and the housing, so as to quickly close when conveying and storing grains next time. In the embodiment of the present utility model, through the action of the gravity torque of the driving member, the opening angle between the discharge plate and the discharge device housing can be reduced, facilitating quick closing under negative pressure for storing grains. When it is necessary to release the grains, the gravity torque of the grains is greater than the gravity torque of the driving member, so that the grains can be quickly released. The opening moment of the discharge plate can be precisely adjusted. When the grains accumulate to a preset weight, the gravity triggers the discharge plate to open smoothly, avoiding grain breakage caused by instantaneous impact.

[0038] Embodiment 2

[0039] As Figure 2As shown in the figure, the present application provides a second embodiment of the discharge plate mechanism. The difference between this embodiment and the first embodiment lies in the different structure of the driving component. A composite driving component of a torsion spring - counterweight is adopted. Specifically, the driving component 850 further includes a counterweight plate 853 and a torsion spring 854; one end of the counterweight plate 853 is fixedly connected to the discharge plate 842, and the included angle between the counterweight plate 853 and the discharge plate 842 is 120 degrees to 160 degrees; the torsion spring 854 is sleeved on the hinge shaft, one end of which is connected to the discharge plate 842, and the other end is connected to the fixed frame 843 to provide an elastic moment in the closing direction; the self - suction switch plate positioning bolt 844 is threadedly connected to the end of the counterweight plate 853, and its end abuts against the discharge device housing 841 to limit the maximum opening of the discharge plate 842.

[0040] In the embodiment of the present application, the discharge plate 842 is connected to the fixed frame 843 through a hinge shaft, and a torsion spring 854 made of 304 stainless steel is installed at the hinge. One end of the spring is fixed to the discharge plate, and the other end is connected to the fixed frame, providing a closing torque of 15 N·m under normal conditions. The counterweight plate 853 is designed with a bend. The included angle range between the counterweight plate 853 and the discharge plate 842 is 120 degrees to 160 degrees, and it is rigidly connected to the discharge plate by welding. An adjustable self - suction switch plate positioning bolt 844 is provided at the end. The bolt is threadedly connected to the counterweight plate, and the initial opening of the discharge plate is controlled by the screwing - in depth. The torsion spring 854 is used to drive the discharge plate to rotate and is in a slightly closed state under normal conditions. When the inside of the discharge device housing 841 is in a negative pressure state, the discharge plate can quickly close. When storing grains, the torque generated by the negative pressure suction is greater than the torque generated by the gravity of the grains, and the discharge plate is in a closed state; during the discharging operation, the negative pressure system is closed, and the torque generated by the gravity of the grains drives the discharge plate to rotate. When the resultant force exceeds the pre - tightening force of the torsion spring, the counterweight plate drives the discharge plate to rotate and open, opening a certain angle to release the grains, realizing controlled discharging.

[0041] Embodiment 3

[0042] As Figure 3 shown in the figure, the present application provides a third embodiment of the discharge plate mechanism. This embodiment adopts a compression spring dynamic balance system. The driving component 850 further includes a compression spring 855. The compression spring 855 is sleeved on the end of the self - suction switch plate positioning bolt 844, one end of which abuts against the counterweight plate 853, and the other end abuts against the discharge device housing 841; the telescopic direction of the compression spring 855 is parallel to the axial direction of the self - suction switch plate positioning bolt 844 to assist the discharge plate 842 to close through the elastic force.

[0043] In this embodiment, the driving component 850 is fixedly connected to the discharge plate 842. A counterweight plate 853 is welded to the end of the discharge plate 842, and its end is threadedly connected to the self-priming switch plate positioning bolt 844. A Φ12×80mm stainless steel compression spring 855 is sleeved on the bolt rod, and the other end of the spring abuts against the reinforcing rib of the discharger housing. By rotating the bolt, the spring pre-tightening force can be adjusted to achieve stepless adjustment of the opening and closing force threshold of the set weight. Specifically, the end of the self-priming switch plate positioning bolt 844 is hollow, and the compression spring 855 is arranged inside the self-priming switch plate positioning bolt 844 and extends to the outside for abutting against the discharger housing to maintain the closing tendency of the discharge plate. Specifically, a fixing frame 843 is arranged on one side of the discharge plate 842. The fixing frame 843 is fixedly connected to the discharger housing 841. A hinge shaft is arranged on the fixing frame 843, and the ends of the discharge plate 842 and the counterweight plate 853 are respectively rotationally connected to the rotating shaft of the fixing frame 843.

[0044] Embodiment 4

[0045] As Figure 4 and Figure 5 As shown, the present application also provides an embodiment of an anti-breakage discharger for grain quality inspection, including: the discharge plate structure described in any one of Embodiments 1 to 3, for discharging grains; the discharger housing 841, inside which a grain accommodation cavity is formed, and the discharge plate 842 is arranged at the bottom outlet of the grain accommodation cavity; the suction air pipe 808, connected to an external negative pressure device, for transporting grains through negative pressure air flow; the grain delivery pipe 805, communicating with the top of the discharger housing 841, for introducing grains into the grain accommodation cavity. The grain delivery pipe 805 is connected to the inner wall of the discharger housing along the tangent direction of the outer circle of the discharger housing 841 and is in through connection with the inner cavity of the discharger housing 841. Grains enter the inner cavity of the discharger along the tangent direction of the inner wall of the discharger housing 841 through the grain delivery pipe 805 and rotate and fall.

[0046] A filter cylinder 870 is arranged inside the discharger housing 841. The filter cylinder 870 includes a cloth bag fixing cylinder 871 and a cloth bag 872 sleeved on its outer wall. A plurality of circumferentially evenly distributed air permeable holes 873 with a pore diameter of 0.5 to 3 mm are arranged on the cylinder wall of the cloth bag fixing cylinder 871. One end of the filter cylinder 870 is in through connection with the suction air pipe 808 for separating the air flow from the grains.

[0047] In the embodiment of the present utility model, a double-layer filter assembly is arranged inside the housing, including a stainless steel cloth bag fixing cylinder and a polyester filter cloth wrapped outside it. Specifically, Φ3mm air permeable holes are evenly opened on the surface of the fixing cylinder. This structure can effectively intercept grain debris during negative pressure transportation while ensuring smooth air flow.

[0048] An anti-collision cushion layer is adhesively bonded to the inner wall of the unloader housing 841, and the thickness of the anti-collision cushion layer is 1 to 5 mm. In the present utility model, the inner wall of the unloader housing 841 is integrally coated with a 5-mm-thick polyurethane anti-collision cushion layer, and a honeycomb buffer structure is molded on the surface. When the high-speed rotating grains flow through, the cushion layer can absorb the collision energy, and it is measured that the grain breakage rate can be reduced by 38%.

[0049] A connection plate 846 is provided at the top of the unloader housing 841, and the connection plate 846 is fixed to the unloader housing 841 through circumferentially evenly distributed connection bolts 848; the suction air pipe 808 is hermetically connected to the connection plate 846 through a flange.

[0050] During operation, the torque generated by the negative pressure suction is greater than the torque generated by the gravity of the grains, and the discharge plate is in a closed state for holding the grains; when the negative pressure suction is turned off, the torque generated by the gravity of the grains is greater than the pre-tightening force of the spring, and the discharge plate is in an open state for discharging operation, realizing controlled discharging.

[0051] The above embodiments combine pneumatic conveying, automatic control and anti-breakage technologies, are applicable to scenarios such as food quality inspection and warehousing, and can significantly reduce the operation cost and improve the inspection accuracy.

[0052] Certainly, the above description of the embodiments is not a limitation to the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model should also belong to the protection scope of the present utility model.

Claims

1. A discharge plate structure, characterized in that: It includes: A discharge plate (842) provided at the outlet of the discharger housing (841). The discharge plate (842) is hingedly connected to the discharger housing (841) through a hinge shaft and can rotate around the hinge shaft to open and close the outlet for grain discharging. A driving component (850), fixed on the discharger housing (841), for providing a closing moment to the discharge plate (842) and driving the discharge plate (842) to close towards the discharger housing (841).

2. The discharge plate structure according to claim 1, characterized in that: A fixed frame (843) is fixed on the outlet side of the discharger housing (841). The hinge shaft is provided on the fixed frame (843), and the driving component (850) is fixed on the discharger housing (841).

3. The discharge plate structure according to claim 2, characterized in that: The driving component (850) includes a self - suction switch plate positioning bolt (844) and a counterweight disc (851). One end of the self - suction switch plate positioning bolt (844) is fixedly connected to the discharge plate (842), and the counterweight disc (851) is sleeved on the self - suction switch plate positioning bolt (844) and locked by nuts (852) on both sides. The center of gravity of the counterweight disc (851) deviates from the center line of the hinge shaft to generate a moment for driving the discharge plate (842) to close through gravity.

4. The discharge plate structure according to claim 2, characterized in that: The driving component (850) includes a self - suction switch plate positioning bolt (844), a counterweight plate (853), and a torsion spring (854). One end of the counterweight plate (853) is fixedly connected to the discharge plate (842), and the included angle between the counterweight plate (853) and the discharge plate (842) is 120 degrees to 160 degrees. The torsion spring (854) is sleeved on the hinge shaft. One end of it is connected to the discharge plate (842), and the other end is connected to the fixed frame (843) to provide an elastic moment in the closing direction. The self - suction switch plate positioning bolt (844) is threadedly connected to the end of the counterweight plate (853), and its end is used to abut against the discharger housing (841) to limit the maximum opening degree of the discharge plate (842).

5. The discharge plate structure according to claim 4, characterized in that: The driving component (850) includes a self - suction switch plate positioning bolt (844) and a compression spring (855). The compression spring (855) is sleeved on the end of the self - suction switch plate positioning bolt (844). One end of it abuts against the counterweight plate (853), and the other end abuts against the discharger housing (841). The telescopic direction of the compression spring (855) is parallel to the axial direction of the self - suction switch plate positioning bolt (844) to assist the discharge plate (842) to close through elastic force.

6. A grain quality inspection anti - breakage discharger, characterized in that: It includes: The discharge plate structure according to any one of claims 1 - 5 for grain discharging. A discharge device housing (841) with a grain receiving chamber formed inside it, and a discharge plate (842) is provided at the bottom outlet of the grain receiving chamber; An air suction pipe (808), connected to an external negative pressure device, for transporting grains through a negative pressure air flow; A grain delivery pipe (805), communicating with the top of the discharge device housing (841), for introducing grains into the grain receiving chamber.

7. The anti-breakage discharge device for grain quality inspection according to claim 6, wherein: A filter cartridge (870) is provided inside the discharge device housing (841), and the filter cartridge (870) includes a cloth bag fixing cylinder (871) and a cloth bag (872) sleeved on its outer wall; A plurality of circumferentially evenly distributed air permeable holes (873) are provided on the cylinder wall of the cloth bag fixing cylinder (871), and the aperture of the air permeable holes is 0.5 - 3 mm; One end of the filter cartridge (870) is connected in a through manner with the air suction pipe (808) for separating the air flow from the grains.

8. The anti-breakage discharge device for grain quality inspection according to claim 6, wherein: An anti-collision cushion layer is provided on the inner wall of the discharge device housing (841), and the thickness of the anti-collision cushion layer is 1 - 5 mm.

9. The anti-breakage discharge device for grain quality inspection according to claim 6, wherein: The grain delivery pipe (805) enters along the tangential direction of the inner wall of the discharge device housing (841) and is connected in a through manner with the inner cavity of the discharge device housing (841).

10. The anti-breakage discharge device for grain quality inspection according to claim 6, wherein: A connection disk (846) is provided at the top of the discharge device housing (841), and the connection disk (846) is fixed to the discharge device housing (841) by circumferentially evenly distributed connection bolts (848); the air suction pipe (808) is hermetically connected to the connection disk (846) through a flange.

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