Vacuum preservation equipment for grain packaging

Abstract

The utility model discloses a vacuum preservation equipment for grain packaging, including storage box, a plurality of storage cavities have on the storage box, install the storage cavity in the storage cavity and have the storage drawer, the top of storage box is equipped with the air pump, the input end of air pump is connected with the air pipe group, the recess is seted up on the storage box, the inner wall of recess is welded with the air inlet pipe and the air outlet pipe, relate to grain preservation equipment technical field, through setting up the air inlet pipe of intercommunication storage cavity, and set up the valve on the air inlet pipe, to open the valve door accordingly, can make air into the corresponding storage cavity, to make the storage cavity and the atmospheric pressure consistent, to save the labor to draw out the storage drawer, through setting up the air outlet pipe of intercommunication storage cavity, and set up the check valve on the air outlet pipe, to the air in the storage cavity can be discharged, and the air of outside can not enter the storage cavity, to when the air pump stops working, can also guarantee the vacuum state of storage cavity.

Description

Technical Field

[0001] This utility model relates to the technical field of grain preservation equipment, specifically a vacuum preservation device for grain packaging. Background Technology

[0002] Utility model patent CN218752107U discloses a high-sealing preservation device for grain processed products, including a vacuum chamber. Bases are fixed to the four corners of the bottom of the vacuum chamber. A control panel is fixed to the front of the vacuum chamber. A door is hinged to the front of the vacuum chamber. An observation window is fixed inside the door. A handrail is fixed to the front of the door. A vacuum structure is fixed inside the vacuum chamber. The vacuum structure includes a sealed chamber. A vacuum pump is fixed to the top of the sealed chamber. A vacuum tube is fixed to the right side of the vacuum pump. Three suction pipes are fixed to the bottom of the vacuum tube. A suction head is fixed to the left side of each suction pipe. A vacuum chamber is formed inside the sealed chamber. A storage box is movably installed inside the vacuum chamber. The control panel is located on the top of the front surface of the vacuum chamber. Mounting holes adapted to the observation window are formed inside the door. The vacuum chambers are arranged in three groups, one on the left and one on the right, with four chambers in each group arranged vertically. The number of storage boxes is equal to the number of vacuum chambers and they correspond one-to-one. The storage boxes are slidably connected to the sealed box. Three suction pipes correspond one-to-one with the three groups of vacuum chambers. Each suction pipe has four suction heads on its left side, each corresponding to a vacuum chamber. The vacuum pump is located on the top left side of the sealed box. Each storage box includes a sealing plate, a sealing frame, and a vent box. The sealing plate is movably mounted on the front of the sealed box, and the sealing frame is fixed to the outside of the sealing plate. The vent box is fixed to the rear of the sealing plate. The sealing frame is fitted over the sealing plate, with its outer side adapted to the vacuum chamber and its outer side fitting against the inner wall of the sealed box.

[0003] The above-mentioned patents have the following shortcomings:

[0004] 1) When the storage box inside the vacuum chamber is evacuated, the pressure inside the storage box is much lower than the external pressure, so it will be very difficult to pull out the storage box, or even impossible to pull it out.

[0005] 2) Simply using the suction pipe and suction head to remove air from the storage box will not achieve the goal of creating a vacuum in the storage box, as outside air will still enter the storage box through the suction pump, suction pipe and suction head. Utility Model Content

[0006] In view of the problems existing in a current vacuum preservation device for grain packaging, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a vacuum preservation device for grain packaging, which solves the problem in the above-mentioned patents that when the storage box inside the vacuum chamber is evacuated, the pressure inside the storage box is much lower than the external pressure, so it is very difficult or even impossible to pull out the storage box; and even if the air inside the storage box is extracted by only using the suction pipe and suction head, the outside air will still enter the storage box through the suction pump, suction pipe and suction head, so it is impossible to achieve the purpose of evacuating the storage box into a vacuum.

[0008] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0009] A vacuum preservation device for grain packaging includes a storage box with multiple storage cavities. Each storage cavity contains a drawer. A vacuum pump is installed at the top of the storage box, and its input end is connected to a vacuum pipe assembly. A groove is formed in the storage box, and an inlet pipe and an outlet pipe are welded to the inner wall of the groove. The outlet pipe is connected to the vacuum pipe assembly, and a one-way valve is installed on the outlet pipe. A valve is installed on the inlet pipe.

[0010] As a preferred embodiment of the vacuum preservation equipment for grain packaging described in this utility model, a first connecting hole and a second connecting hole are provided between the storage cavity and its adjacent right-side groove. The first connecting hole enables communication between the air outlet pipe and the storage cavity, and the second connecting hole enables communication between the air inlet pipe and the storage cavity.

[0011] In a preferred embodiment of the vacuum preservation equipment for grain packaging described in this utility model, a sealing ring is adhered to the storage cavity of the storage box, thereby achieving a seal between the storage drawer and the storage box.

[0012] As a preferred embodiment of the vacuum preservation equipment for grain packaging described in this utility model, the air extraction pipe group includes a three-way valve, adjacent three-way valves are connected by a bridge pipe, and the left three-way valve is connected to the input end of the air extraction pump.

[0013] The bottom interface of the tee is connected to a riser, and each of the air outlet pipes is connected to the corresponding riser.

[0014] As a preferred embodiment of the vacuum preservation equipment for grain packaging described in this utility model, the top of the storage box is covered with a protective cover, the rear end of the protective cover has a vent hole, and the protective cover and the storage box are fixed together by bolts.

[0015] In a preferred embodiment of the vacuum preservation equipment for grain packaging described in this utility model, a first mounting block is welded to the outer wall of the protective cover, and a second mounting block is welded to the outer wall of the storage box. The first mounting block and the second mounting block are fixed together by bolts.

[0016] The storage box is hinged to a door, and the door is equipped with an observation window.

[0017] Compared with existing technologies:

[0018] 1. By setting up an air inlet pipe that connects to the storage cavity and installing a valve on the air inlet pipe, air can be allowed to enter the corresponding storage cavity by opening the corresponding valve, so that the air pressure in the storage cavity is the same as that in the outside air, thus making it easier to pull out the storage drawer.

[0019] 2. By setting up an air outlet pipe that connects to the storage cavity and installing a one-way valve on the air outlet pipe, the air in the storage cavity can be discharged, while the outside air cannot enter the storage cavity. This ensures that the storage cavity remains in a vacuum state even when the air pump stops working. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the present invention;

[0021] Figure 2 Provided by this utility model Figure 1 A sectional view;

[0022] Figure 3 Provided by this utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 Provided by this utility model Figure 2 A sectional view.

[0024] In the diagram: 1. Storage box; 2. Protective cover; 3. Box door; 4. Observation window; 5. Storage drawer; 6. Groove; 7. Riser; 8. First mounting block; 9. Second mounting block; 10. Air inlet pipe; 11. Air pump; 12. Vent hole; 13. Bridge pipe; 14. Tee; 15. Valve; 16. Air outlet pipe; 17. One-way valve; 18. Storage cavity; 19. Sealing ring; 20. First connecting hole; 21. Second connecting hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] This utility model provides a vacuum preservation device for grain packaging. Please refer to [link / reference]. Figure 1-4The system includes a storage box 1, which is hinged to a door 3. The door 3 has an observation window 4. The storage box 1 has multiple storage cavities 18, each containing a drawer 5. A vacuum pump 11 is installed at the top of the storage box 1, and the input end of the vacuum pump 11 is connected to a vacuum pipe assembly. A groove 6 is formed on the storage box 1, and an air inlet pipe 10 and an air outlet pipe 16 are welded to the inner wall of the groove 6. The air outlet pipe 16 is connected to the vacuum pipe assembly and is equipped with a one-way valve 17. With the one-way valve 17, air in the storage cavities 18 can be discharged through the air outlet pipe 16, but outside air cannot enter the storage cavities 18 through the air outlet pipe 16. A valve 15 is installed on the air inlet pipe 10.

[0027] A first connecting hole 20 and a second connecting hole 21 are provided between the storage cavity 18 and its adjacent right-side groove 6. The first connecting hole 20 enables communication between the air outlet pipe 16 and the storage cavity 18, and the second connecting hole 21 enables communication between the air inlet pipe 10 and the storage cavity 18.

[0028] A sealing ring 19 is bonded to the storage cavity 18 of the storage box 1. The sealing ring 19 achieves a seal between the storage drawer 5 and the storage box 1. When the storage cavity 18 is evacuated, the drawer 5 and the storage box 1 clamp the sealing ring 19 under negative pressure, thereby achieving a better seal.

[0029] The air extraction pipe assembly includes a tee 14, and adjacent tee 14s are connected by a bridge pipe 13. The left tee 14 is connected to the input end of the air extraction pump 11.

[0030] The bottom interface of the tee 14 is connected to the riser 7, and each of the air outlet pipes 16 is connected to the corresponding riser 7.

[0031] The top of the storage box 1 is covered with a protective cover 2. The rear end of the protective cover 2 has a vent hole 12. A first mounting block 8 is welded to the outer wall of the protective cover 2. A second mounting block 9 is welded to the outer wall of the storage box 1. The first mounting block 8 and the second mounting block 9 are fixed together by bolts.

[0032] In practical use, all drawers 5 are closed, and the vacuum pump 11 creates a vacuum in each storage cavity 18 through the vacuum pipe assembly and the air outlet pipe 16, thereby achieving vacuum preservation of the grains in the drawers 5. When it is necessary to remove a certain drawer 5, the valve 15 on the corresponding air inlet pipe 10 is opened, and outside air enters the drawer 5 and its corresponding storage cavity 18, thereby making the air pressure in the storage cavity 18 the same as the outside air pressure, and then the drawer 5 is pulled out.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vacuum preservation device for grain packaging, comprising a storage box (1), the storage box (1) having a plurality of storage cavities (18), each storage cavity (18) having a drawer (5) installed therein, a vacuum pump (11) installed at the top of the storage box (1), the input end of the vacuum pump (11) being connected to a vacuum pipe assembly, characterized in that: The storage box (1) has a groove (6) on it. An air inlet pipe (10) and an air outlet pipe (16) are welded on the inner wall of the groove (6). The air outlet pipe (16) is connected to the air extraction pipe assembly. A one-way valve (17) is installed on the air outlet pipe (16). A valve (15) is installed on the air inlet pipe (10).

2. The vacuum preservation equipment for grain packaging according to claim 1, characterized in that, A first connecting hole (20) and a second connecting hole (21) are provided between the storage cavity (18) and its adjacent right-side groove (6). The first connecting hole (20) enables communication between the air outlet pipe (16) and the storage cavity (18), and the second connecting hole (21) enables communication between the air inlet pipe (10) and the storage cavity (18).

3. The vacuum preservation equipment for grain packaging according to claim 1, characterized in that, A sealing ring (19) is bonded to the storage cavity (18) of the storage box (1), and the sealing ring (19) achieves the sealing between the storage drawer (5) and the storage box (1).

4. The vacuum preservation equipment for grain packaging according to claim 2, characterized in that, The air extraction pipe assembly includes a tee (14), and adjacent tees (14) are connected by a bridge pipe (13). The tee (14) on the left is connected to the input end of the air extraction pump (11). The bottom interface of the tee (14) is connected to the riser (7), and each of the air outlet pipes (16) is connected to the corresponding riser (7).

5. A vacuum preservation device for grain packaging according to claim 3, characterized in that, The top of the storage box (1) is covered with a protective cover (2), and the rear end of the protective cover (2) is provided with a vent hole (12). The protective cover (2) and the storage box (1) are fixed together by bolts.

6. A vacuum preservation device for grain packaging according to claim 5, characterized in that, A first mounting block (8) is welded to the outer wall of the protective cover (2), and a second mounting block (9) is welded to the outer wall of the storage box (1). The first mounting block (8) and the second mounting block (9) are fixed together by bolts. The storage box (1) is hinged to a door (3), and the door (3) is provided with an observation window (4).

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