CN210063922U

CN210063922U - Vacuumizing prompt sound gun head, cover and preservation box

Info

Publication number: CN210063922U
Application number: CN201920036681.5U
Authority: CN
Inventors: 叶家华; 叶汪和
Original assignee: Suzhou Tongle Laifu Precision Manufacturing Technology Co Ltd
Current assignee: Suzhou Tongle Laifu Precision Manufacturing Technology Co Ltd
Priority date: 2019-01-09
Filing date: 2019-01-09
Publication date: 2020-02-14
Anticipated expiration: 2029-01-09

Abstract

The utility model discloses a vacuumizing prompt sound gun head, which comprises a shell, wherein a first cavity is arranged inside the shell, the shell is provided with an air suction port and an air inlet which are communicated with the first cavity, and the air suction port is used for being connected with an air suction mechanism; pronunciation mechanism, it includes by the casing outside extends to the inside whistle of casing, and be used for cutting off the whistle with the shutoff mechanism of first cavity, and be used for ordering about shutoff mechanism is right the whistle carries out the canceling release mechanical system who cuts off, works as the inside atmospheric pressure of first cavity is less than external atmospheric pressure forms the pressure difference, and the pressure difference is greater than during canceling release mechanical system's threshold value, external atmospheric pressure can extrude and open shutoff mechanism makes the whistle with first cavity intercommunication. This application can reach the threshold value when vacuum, carries out the vocal suggestion, has reached more accurate control by the effect of the interior vacuum of evacuation container, this application simple structure, and the cost is lower, easy and simple to handle.

Description

Vacuumizing prompt sound gun head, cover and preservation box

Technical Field

The utility model relates to a preservation box evacuation field, concretely relates to evacuation prompt tone rifle head, lid and preservation box.

Background

The preservation box is the preservation container that people often can use in daily life in fact, and is general, and the preservation box divide into three kinds: one is a plastic preservation box: the material is made of resin materials, and the general temperature resistant range is as follows: the maximum temperature is 120 ℃, and the minimum temperature is-20 ℃. One is a toughened glass preservation box: common glass is toughened, and the last is a heat-resistant glass preservation box which is made of high borosilicate glass material.

The preservation box can prevent moisture from diffusing, plays a sealed role, prevents food from losing original delicate flavor when being stored, isolates air, and prevents food from being oxidized.

However, most of the existing preservation boxes have limited preservation time, although the cavities can be isolated, air exists inside the preservation boxes, and therefore, in order to prolong the preservation storage time of the preservation boxes, a preservation box capable of being vacuumized is developed.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an evacuation prompt tone rifle head, lid and preservation box, it can carry out the sound production suggestion when vacuum reaches the threshold value.

In order to solve the technical problem, the utility model provides a scheme is: a vacuumizing prompt tone gun head comprises a shell, wherein a first cavity is formed in the shell, an air suction port and an air inlet which are communicated with the first cavity are formed in the shell, and the air suction port is used for being connected with an air suction mechanism;

pronunciation mechanism, it includes by the casing outside extends to the inside whistle of casing, and be used for cutting off the whistle with the shutoff mechanism of first cavity, and be used for ordering about shutoff mechanism is right the whistle with the canceling release mechanical system that first cavity cut off, works as the inside atmospheric pressure of first cavity is less than the outside atmospheric pressure of casing forms the pressure differential, just the pressure differential is greater than during canceling release mechanical system's threshold value, the outside atmospheric pressure of casing can pass through the whistle extrusion is opened shutoff mechanism makes the whistle with first cavity intercommunication.

Further, the method comprises the following steps: the plugging mechanism comprises a second cavity and a piston rod,

the second cavity is arranged in the first cavity, the second cavity is provided with an air pressure hole, the second cavity is communicated with the first cavity only through the air pressure hole, one end of the whistle is positioned outside the shell, the other end of the whistle is positioned in the second cavity,

and one end of the piston rod is provided with a cover plate, the cover plate is sealed and covered on one side of the air pressure hole, which is far away from the second cavity, and the piston rod can move along the air pressure hole so as to drive the cover plate to be far away from the second cavity.

Further, the method comprises the following steps: the reset mechanism comprises a limiting part and a reset spring, wherein the limiting part is arranged at one end of the cover plate and is far away from the piston rod, the reset spring is sleeved on the piston rod, one end of the reset spring is abutted to the limiting part, and the other end of the reset spring is abutted to the inner side cavity wall, on one side of the air pressure hole, of the second cavity.

Further, the method comprises the following steps: the air pumping port and the air inlet are respectively arranged on two opposite sides of the shell.

The application further provides a lid, including above-mentioned evacuation prompt tone rifle head, still include the lid, the lid is used for sealed lid to close the container, be provided with the gas vent on the lid, evacuation prompt tone rifle head passes through the air inlet with gas vent sealing connection. Further, the method comprises the following steps:

further, the method comprises the following steps: and a one-way valve is arranged on the exhaust port, and the gas can enter the first cavity through the one-way valve.

The application further provides a preservation box, including above-mentioned lid to and the box body, lid sealed lid closes on the box body.

Further, the method comprises the following steps: the cover is detachably connected with the box body

The utility model has the advantages that: this application can reach the threshold value when vacuum, carries out the vocal suggestion, has reached more accurate control by the effect of the interior vacuum of evacuation container, this application simple structure, and the cost is lower, easy and simple to handle.

Drawings

Fig. 1 is a cross-sectional view of an evacuated warning tone tip.

Fig. 2 is a cross-sectional view of the cap.

Fig. 3 is a schematic perspective view of the cover.

The reference numbers in the figures illustrate: the air exhaust device comprises a shell 1, a first cavity 11, an air exhaust port 12, an air inlet 13, a whistle 21, a second cavity 22, a piston rod 23, an air pressure hole 24, a cover plate 25, a limiting piece 26, a return spring 27, a cover body 3 and an air exhaust port 31.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1 to 3, an evacuation warning sound gun head includes a cylindrical sleeve-shaped housing 1, the housing 1 is used for defining an internal cavity, the cavity is a first cavity 11, an air suction port 12 extending toward the first cavity 11 is opened at the top of the housing 1, and an air inlet 13 is integrally opened at the bottom of the housing 1, wherein the air suction port 12 is used for connecting with an air suction mechanism, and the air suction mechanism may be an air suction pump or an air suction canister.

This application still includes pronunciation mechanism, this pronunciation mechanism include by 1 outside of the casing extends to 1 inside whistle 21 of casing to and shutoff mechanism, this shutoff mechanism is used for cutting off first cavity 11 and communicates through whistle 21 and the 1 outside of casing, makes casing outside air current can not pass through whistle 21 gets into to first cavity 11, still including being used for ordering about the canceling release mechanical system that shutoff mechanism resets works as 11 inside atmospheric pressure of first cavity is less than external atmospheric pressure and forms the pressure differential, and this pressure differential is greater than during canceling release mechanical system's threshold value, external atmospheric pressure can extrude and open shutoff mechanism makes the air current enter into first cavity 11 through whistle 21.

As shown in fig. 1 to 3, when vacuum evacuation is performed using the present application, the gas inlet 13 communicates with a container to be evacuated, the air in the first cavity 11 is gradually reduced by vacuumizing through the air exhaust port 12, the first cavity 11 generates a pressure difference with the outside, when the pressure difference is larger than the threshold value of the reset mechanism, the air pressure presses the blocking mechanism open, so that the first cavity 11 is communicated with the outside through the whistle 21, since one end of the whistle 21 is located outside the housing 1, air flows into the first cavity 11 through the whistle 21, the air flow passes through the whistle 21 to make the whistle 21 sound, so as to prompt the vacuum degree to reach a threshold value, at the moment, the vacuumizing is stopped, the airflow continuously flows into the first cavity 11 until the pressure difference between the pressure in the first cavity 11 and the external pressure is smaller than the threshold value of the reset mechanism, and the reset mechanism is enough to drive the blocking mechanism to block the whistle 21.

As shown in fig. 1 to 3, the plugging mechanism specifically includes a second cavity 22 and a piston rod 23, the second cavity 22 is a vertically arranged circular sleeve, the bottom end of the second cavity extends into the first cavity 11, an air pressure hole 24 is formed at the bottom end of the second cavity 22, the second cavity 22 is communicated with the first cavity 11 through the air pressure hole, the upper end of the second cavity 22 is communicated with the outer side of the housing 1 to form a through hole, and the whistle 21 is hermetically inserted into the through hole at the upper end of the second cavity 22

Wherein, piston rod 23 one end is provided with apron 25, and the sealed lid of apron 25 closes the bottom in atmospheric pressure hole 24, piston rod 23 are located second cavity 22, and this piston rod 23 can pass bottom atmospheric pressure hole 24 and carry out vertical movement to drive apron 25 vertical movement, make apron 25 keep away from or be close to atmospheric pressure hole 24, realize the sealed to atmospheric pressure hole 24.

In the present application, as shown in fig. 1 to fig. 3, the reset mechanism includes a limiting member 26 disposed on the upper end of the piston rod 23, specifically, the limiting member 26 may be a ring member, further, the limiting member 26 may be a nut, the limiting member 26 is located in the second cavity 22, a reset spring 27 is sleeved on the piston rod 23, one end of the reset spring 27 abuts against the lower edge of the limiting member 26, and the other end of the reset spring 27 abuts against the inner cavity wall of the second cavity 22 around the air pressure hole 24.

As shown in fig. 1 to 3, when the air pressure difference between the first cavity 11 and the outside is greater than the elastic force of the return spring 27, the outside air pressure will press the cover plate 25, the cover plate 25 drives the piston rod 23 to move down, so that the limiting member 26 moves down and compresses the return spring 27, so that the second cavity 22 is communicated with the first cavity 11, and the air flow can enter the first cavity 11 through the whistle 21, so that the whistle 21 generates a sound to prompt. Wherein, the threshold value of the vacuum degree can be adjusted by adopting a return spring 27 with different elastic forces.

On the basis, as shown in fig. 1 to 3, the application further provides a cover that can be used on a container, including the above-mentioned evacuation prompt tone rifle head, still include lid 3, lid 3 is used for sealed closure container, be provided with gas vent 31 on the lid 3, the evacuation prompt tone rifle head passes through gas inlet 13 with gas vent 31 sealing connection, preferably, evacuation prompt tone rifle head can be connected with gas vent 31 detachable on the lid 3, for example be provided with annular boss outside gas vent 31, the block that seals of gas inlet 13 of evacuation prompt tone rifle head is in the boss outside.

In addition, as shown in fig. 1 to 3, the present application may further include a check valve provided on the exhaust port 31, through which gas may enter the first cavity 11, and the container may be maintained in a vacuum state for a long time after vacuum pumping by providing the check valve.

In addition, as shown in fig. 1 to fig. 3, the present application further provides a fresh food box, which includes the above-mentioned lid, and a box body, wherein the lid is sealed and covered on the box body. Preferably, the cover is detachably connected with the box body, in the application, a buckle is fixedly arranged around the cover, and the cover is connected with the box body through the buckle.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A vacuumizing prompt tone gun head is characterized by comprising a shell, wherein a first cavity is formed in the shell, an air suction port and an air inlet which are communicated with the first cavity are formed in the shell, and the air suction port is used for being connected with an air suction mechanism;

2. The evacuated warning sound gun head according to claim 1, wherein the blocking mechanism comprises a second cavity and a piston rod,

3. The evacuated warning sound gun head according to claim 2, wherein the return mechanism includes a stopper provided at an end of the piston rod remote from the cover plate, and a return spring sleeved on the piston rod, one end of the return spring abuts against the stopper, and the other end of the return spring abuts against an inner cavity wall of the second cavity at a side where the air pressure hole is provided.

4. The evacuated warning tone torch head of claim 1, wherein the suction port and the air inlet are provided on opposite sides of the housing.

5. A cover, comprising the vacuumizing prompt tone gun head of any one of claims 1 to 4, further comprising a cover body, wherein the cover body is used for sealing and covering the container, an exhaust port is arranged on the cover body, and the vacuumizing prompt tone gun head is connected with the exhaust port in a sealing mode through the air inlet.

6. A lid as claimed in claim 5, wherein said vent is provided with a one-way valve through which gas may enter said first cavity.

7. A crisper comprising the lid of claim 5 or 6, further comprising a box, wherein the lid is sealingly closed to the box.

8. The crisper of claim 7, wherein the lid is removably coupled to the body.