CN215323958U

CN215323958U - Domestic grain storage cabinet

Info

Publication number: CN215323958U
Application number: CN202121235864.3U
Authority: CN
Inventors: 张文豪; 张越
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-12-28
Anticipated expiration: 2031-06-03

Abstract

A household grain storage cabinet aims at overcoming the defects and shortcomings of the prior art and provides a solution for achieving the purposes of preventing insects, mildew and moisture and prolonging the quality guarantee period of grains by changing the internal pressure of the grain storage cabinet. Comprises a sealed grain storage cabinet, a pressure system and a control system. The sealed grain storage cabinet consists of a bucket body, an upper cover and a sealing ring; the pressure system consists of a pressure pump, a one-way valve and a pipeline; the control system is composed of a control panel, a sensor, a circuit board and the like. When the grain storage cabinet works, air is pumped out of the grain storage cabinet or pumped into the grain storage cabinet through the pressure system and the control system, so that the pressure, the humidity and the oxygen concentration in the grain storage cabinet can be changed, the living conditions of moth, mold and the like are changed, and the aims of preventing moisture, insects and mold are fulfilled.

Description

Domestic grain storage cabinet

Technical Field

The utility model relates to the technical field of grain storage cabinets, in particular to a grain storage cabinet which can prolong the quality guarantee period of grains by changing pressure.

Background

At present, the common grain storage appliances in families mainly use paper boxes, plastic bags, plastic boxes, glass bottles, plastic bottles and the like as the grain storage appliances, and the appliances are convenient in source and basically do not need extra cost. But the function is single, generally only has the function of storage, and does not have the function of keeping the quality of the grains. If the grains are stored for a long time, the grains are easily influenced by ambient temperature and humidity, and mildew, moths and the like in the grains are easy to breed and hatch under the action of proper pressure, oxygen, temperature and humidity, so that the grains are aged, moistened, mildewed and damaged by worms more quickly, the nutritional ingredients of the grains are lost, the health of a human body is influenced, and the loss of the grains is increased. For the grain storage cabinets in the current market, the grain storage cabinets have simple structure and single function, and only have sealing and storage functions, for example, a household grain storage container with the patent number of 200520200062.3 and a household grain storage tank with the patent number of 200320104178.8, the insect prevention and quality guarantee effects are not ideal; or a refrigeration technology is adopted, the aim of storing grains is achieved by reducing the temperature, for example, a low-temperature rice cabinet with the patent number of 201810579222.1 and a refrigeration structure of a rice storage cabinet with the patent number of 201620114383.X are adopted, and the technology has the advantages of complex structure, high manufacturing cost, serious energy consumption and high use cost.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the utility model provides a solution which can effectively achieve the purposes of preventing insects, preventing mildew and preventing moisture and prolonging the quality guarantee period of grains, and has the advantages of simple structure, proper cost, reliable work, convenient use and low operation cost.

The technical scheme adopted by the utility model is as follows:

a novel rice storage cabinet comprises: a sealed grain storage cabinet body and a device for controlling the internal pressure of the cabinet body.

It is characterized by comprising a sealed grain storage cabinet, a pressure system and a control system, wherein the pressure system and the control system can adjust the internal pressure of the grain storage cabinet. The sealed grain storage cabinet is provided with an openable window or an openable upper cover to ensure that grains can be put in or taken out, and the window or the upper cover is provided with a reliable sealing device to ensure that the inner space of the grain storage cabinet can be reliably sealed with the outside after the grains are put in or taken out and closed; the pressure system consists of a pressure pump and accessories; the control system is composed of devices such as a control panel, a pressure sensor, a circuit board, a pressure display and the like.

After the rice storage cabinet with the structure is used, after grains are put in or taken out each time, the pressure control device can be automatically started to pump out air in the rice storage cabinet, so that air in the rice storage cabinet is reduced, the pressure is reduced, the oxygen content, the humidity and the like are reduced, negative pressure is generated, the pressure, the humidity and the oxygen concentration in the rice storage cabinet are changed, the growth and breeding conditions of moth and mildew are destroyed, and the aims of killing worm eggs or moth eggs, preventing moisture and preventing mildew are fulfilled.

When the pressure in the grain storage cabinet reaches the preset pressure, the control system stops the operation of the pressure pump, and the pressure in the grain storage cabinet can still keep a certain pressure for a long time due to the sealing characteristic of the grain storage cabinet without continuously working, so that the operation cost of the grain storage cabinet is saved.

For the selection of the pressure in the grain tank, a negative pressure is generally used, as described above in this description. In special cases, positive pressure can be used, or positive and negative pressure are selected to alternately act, so that moths, worm eggs and molds are inhibited or killed under different external conditions. For convenience of description, the present description will be primarily described and illustrated in the context of negative pressure.

The utility model has reasonable design, changes the humidity and the oxygen concentration in the storage chamber by changing the pressure in the grain storage cabinet, leads insects, eggs, moulds and the like in the storage chamber to lose the proper growth and propagation conditions, can effectively achieve the purposes of insect suppression, insect killing, mould suppression and quality guarantee, can prolong the quality guarantee period of grains, furthest keeps the nutrient components of the grains and keeps the original flavor of the grains. Compared with the prior art, the insect-proof and mildew-proof packaging box has the characteristics of good insect-proof and mildew-proof effects, simple structure and low operation cost.

Drawings

One embodiment of the present invention is shown in fig. 1, 2, 3;

FIG. 1 is an external view of the present embodiment;

FIG. 2 is a sectional view showing the internal structure of the present embodiment;

FIG. 3 is a schematic view of a check valve in this embodiment;

FIG. 4 is a graph showing the variation of the operating pressure in the grain storage tank;

wherein:

1 is an upper cover of the grain storage cabinet; 2 is a barrel body of the grain storage cabinet; 3 is a base of the grain storage cabinet; 4 is a control panel; 5 is a sealed transparent window; 6 is a control circuit board; 7 is a pressure pump; 8 is a pressure sensor; 9 is a connecting air pipe; 10 is a one-way valve; and 11 is a sealing ring.

Detailed Description

The working process of the utility model is explained in detail below with reference to specific examples:

as shown in fig. 1-3. The sealed grain storage space is formed by the grain storage cabinet upper cover 1, the grain storage cabinet barrel body 2 and the sealing ring 11. After grains are loaded, a cover of the grain storage cabinet is covered, after a power supply is turned on, a control circuit can detect the pressure in the grain storage cabinet through a pressure sensor 8, when the actual pressure P in the detection cabinet is greater than the storage pressure P1 preset by the system, the system can start a pressure pump 7, the pressure pump 7 pumps the air in the grain storage cabinet out through a one-way valve 10 and a connecting air pipe 9, and therefore negative pressure is formed in the grain storage cabinet. When the negative pressure in the grain storage cabinet reaches a preset value P1 of the system, the pressure pump stops working.

After the pressure pump stops working, the external pressure is greater than the internal pressure of the grain storage cabinet, but due to the action of the one-way valve 10, air can not enter the grain storage cabinet through the one-way valve 10, so that the pressure pump 7 does not need to work continuously, and the negative pressure can still be ensured in the grain storage cabinet within a certain time, thereby reducing the energy consumption and saving the operating cost of the grain storage cabinet.

Because the absolute sealing of the grain storage cabinet is impossible, the pressure P of the grain storage space is gradually increased due to the existence of air leakage, when the pressure P in the grain storage cabinet is increased to another preset value P2, the system restarts the pressure pump, and the grain storage cabinet enters the next working cycle.

Under the circulation action, the space in the grain storage cabinet can be kept in a negative pressure state for a long time, the pressure in the grain storage space is reduced, and the oxygen content and the humidity are reduced, so that pests, worm eggs, bacteria, mold and the like in the grain storage space lose proper living conditions and are killed or growth is inhibited, and the aim of keeping the grain quality is fulfilled.

The relationship between the pressures P1 and P2 preset in the two systems described above is such that P2> P1, i.e. the negative pressure value of P1 is higher than that of P2.

A further description of the variation of the actual pressure P in the grain tank can be found in fig. 4.

In the figure, the horizontal axis represents time, the vertical axis represents pressure, a thickened curve P represents the change of the pressure in the grain storage cabinet along with the time, P0 represents standard one atmosphere pressure, P1 represents preset pressure pump stop working pressure, P2 represents preset pressure pump restart pressure, t1 represents the time of pressure pump start working, and t2 represents the time of pressure pump stop working system in pressure maintaining state.

As can be seen from FIG. 4, when the pressure pump starts to work, the pressure pump stops working when the pressure in the cabinet reaches the set pressure P1 after the time t1 from the normal atmospheric pressure. The time t1 required for this process is determined by the size of the sealed space in the grain storage bin and the flow rate of the pressure pump. After the pressure pump stops working, the grain storage cabinet enters a pressure maintaining stage, the pressure in the grain storage cabinet gradually rises due to inevitable leakage, the pressure rises to the set pressure P2 after the time t2, and the pressure pump is restarted to enter the next working cycle. Obviously, the better the tightness of the grain storage tank, the longer the dwell time t2 of the system lasts, and the better the system is.

The above-described embodiments are merely preferred embodiments of the present invention, and all equivalent designs made in the claims of the present invention should be covered by the technology of the present invention.

Claims

1. A household grain storage cabinet is composed of a grain storage cabinet, a pressure system and a control system, and is characterized in that: the grain storage cabinet consists of a barrel body (2) and an openable upper cover (1), wherein the barrel body and the upper cover are kept sealed by a sealing ring (11), so that the sealing property of the grain storage cabinet after grains are put in or taken out can be ensured, and a sealing space for storing the grains is formed; the pressure system consists of a pressure pump (7), a one-way valve (10) and a connecting air pipe (9), and can draw out air in the grain storage cabinet or pump outside air into the grain storage cabinet; the control system consists of a control panel (4), a circuit board (6) and a pressure sensor (8) and is used for controlling the pressure system to start and stop.

2. The domestic grain storage cabinet according to claim 1, wherein: the pressure system can form negative pressure in the grain storage cabinet.

3. The domestic grain storage cabinet according to claim 1, wherein: the pressure system can form positive pressure in the grain storage bin.

4. The domestic grain storage cabinet according to claim 1, wherein: the pressure system can form a state of alternating circulation of positive pressure and negative pressure in the grain storage cabinet.

5. The domestic grain storage cabinet according to claim 1, wherein: when the pressure system stops working, the one-way valve can keep the pressure formed in the grain storage cabinet for a certain time.

6. The domestic grain storage cabinet according to claim 1, wherein: the control system can control the start and stop of the pressure system and can display the actual pressure in the grain storage cabinet.

7. The domestic grain storage cabinet according to claim 1, wherein: the pressure sensor in the control system can detect the pressure in the storage space in real time, so that the control system can start or stop the pressure pump according to the pressure condition in the grain storage cabinet.

8. The domestic grain storage cabinet according to claim 1, wherein: the grain storage box body is provided with a sealed transparent window (5) which can be used for observing the grain amount in the box.