Can negative pressure detection device

A negative pressure detection device and canned food technology, which is applied in the direction of testing the fluid tightness by detecting the dimensional change of the structural parts to be tested, and using liquid/vacuum degree for liquid tightness measurement, etc., which can solve the problem of food and air contact, easy to be corrupted, and shelf life. Shorten and increase the cost of canned food inspection, etc., to achieve simple and convenient judgment, reduce inspection cost, and improve resource utilization

Pending Publication Date: 2021-11-09
SHANDONG INST FOR FOOD & DRUG CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above detection method is a destructive detection method. After the negative pressure inside the can is destroyed, the food contained in the can will be easily corrupted in contact with the air, and the shelf life will be shortened; if the can is punctured during the sales process, the sales will be affected, and the cost of can inspection will be increased.

Method used

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  • Can negative pressure detection device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Please refer to Figure 1-6 , the present embodiment discloses a negative pressure detection device for cans, which includes an observation cover 7 with an opening at one end, a fixing ring 12 is provided on the inner wall of the observation cover 7 close to the opening, and an elastic ring piece is fixed on the side of the fixing ring 12 facing the opening of the observation cover 7 13. The observation cover 7 is provided with an air inlet and an air outlet connected to the inside and outside of the observation cover. The air inlet of the observation cover 7 is connected to a port of the valve 1. The air outlet of the first one-way valve 6 is connected with the air inlet of the negative pressure pump 5 .

[0038] This embodiment also includes a clamping piece, the clamping piece includes two oppositely arranged arc-shaped plates 8, the arc-shaped plates 8 include a first end and a second end of the plate body, and the first ends of the two arc-shaped plates ...

Embodiment 2

[0056] Embodiment two: if figure 2 with image 3 As shown, this embodiment discloses a negative pressure detection device for cans, the structure of which is roughly the same as that of Embodiment 1, the difference is that a laser generator 11 is fixed on the inner wall of the observation cover 7 of this embodiment;

[0057] Wherein, the inline laser beam irradiated by the inline laser generator 11 passes through the position near the center outside the cover.

[0058] It also includes a control switch 3 and a battery 4 located outside the observation cover 7, the output terminal of the battery 4 is electrically connected to the input terminal of the control switch 3, and the output terminal of the control switch 3 is respectively connected to the input terminal of the negative pressure pump 5 and the laser generator. The input end of the device 11 is electrically connected.

[0059] Preferably, the control switch 3 is provided with control buttons for respectively controll...

Embodiment 3

[0065] Embodiment three: as figure 1 with figure 2 As shown, this embodiment discloses a negative pressure detection device for canned food. On the basis of Embodiment 1 or Embodiment 2, this embodiment also includes a negative pressure gauge 2 and a three-way pipe. The three ports of the three-way pipe are respectively It is connected with the air inlet of observation cover 7, a port of valve 1, and the port of negative pressure gauge 2.

[0066] The valve 1 includes two ports, the two ports are in a connected state when the valve 1 is open, and the two ports are in a closed state when the valve 1 is closed.

[0067] The working process and principle of this embodiment are:

[0068] The air pressure in cans of the same specification is similar, measure the air pressure in one of the cans.

[0069] The can negative pressure detection device is installed on the lid of the can. The negative pressure pump 5 works to reduce the air pressure in the observation cover 7. The air ...

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Abstract

The invention discloses a can negative pressure detection device which comprises a clamping piece and an observation cover with an opening in one end, a fixing ring is arranged at the position, close to the opening, of the inner wall of the observation cover, an elastic ring piece is fixed to the side face, facing the opening of the observation cover, of the fixing ring, and an air inlet and an air outlet communicating the inside and the outside of the observation cover are formed in the observation cover; an air inlet of the observation cover is connected with one port of the valve, an air outlet of the observation cover is connected with an air inlet of the first one-way valve, an air outlet of the first one-way valve is connected with an air inlet of the negative pressure pump, the clamping piece comprises two arc-shaped plates which are oppositely arranged, each arc-shaped plate comprises a first end and a second end, and the first ends of the two arc-shaped plates are rotationally connected; the second ends of the two arc-shaped plates extend to form fixing rods. According to the can negative pressure detection device, the negative pressure in the can is detected by changing the air pressure difference inside and outside the can cover, the can is not damaged, the can detection cost is reduced, the air pressure outside the can cover is close to or larger than the air pressure in the cover, and the can cover is convenient to open.

Description

technical field [0001] The invention relates to the technical field of food detection equipment, in particular to a negative pressure detection device for canned food. Background technique [0002] The lids of glass bottles and cans are mostly made of sheet metal, and the lids are sunken inward under the action of negative pressure in the bottle. When the negative pressure in the bottle of the can is destroyed and air is sucked in from the outside, the bacteria in the inhaled air will be on the food in the can Breeding, causing food corruption in the bottle, when the air pressure in the bottle returns to atmospheric pressure, the lid remains inward to a certain extent due to the shaping effect of the negative pressure; [0003] In the prior art, a can vacuum gauge is usually used to measure the vacuum degree of cans. It is a disc negative pressure gauge with a needle point at the lower end. The base of the gauge is connected to a hollow tube, and the outside of the hollow tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/36
CPCG01M3/36
Inventor 程月红于艳艳杨振东鲍连艳程玲云高喜凤任雪梅
Owner SHANDONG INST FOR FOOD & DRUG CONTROL
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