CN111572898A - Connecting device for entering and exiting negative pressure environment and detection method - Google Patents
Connecting device for entering and exiting negative pressure environment and detection method Download PDFInfo
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- CN111572898A CN111572898A CN202010437106.3A CN202010437106A CN111572898A CN 111572898 A CN111572898 A CN 111572898A CN 202010437106 A CN202010437106 A CN 202010437106A CN 111572898 A CN111572898 A CN 111572898A
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- cover plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Abstract
The invention provides a connecting device and a detection method for an inlet and outlet negative pressure detection environment, wherein a hollow cavity is arranged in a base body and can contain a middle rotor, a sealing element is arranged at the contact part of the middle rotor and the inner surface of the base body, the middle rotor divides the hollow cavity into an upper cavity and a lower cavity, and air exchange cannot be carried out between the upper cavity and the lower cavity; the upper end extension part of the base body is connected with an upper cover plate, and a feed inlet is formed in the upper cover plate; the lower end extension part of the base body is connected with a lower cover plate, and a discharge hole is formed in the lower cover plate; the middle rotor is provided with a first hole and a second hole which correspond to the feeding hole and the discharging hole respectively, and when the middle rotor rotates, materials enter a negative pressure detection environment through the feeding hole and the first hole. The invention can be connected with an atmosphere and negative pressure environment detection platform, so that the materials which are inflated and packaged can smoothly enter and exit the negative pressure detection platform, thereby realizing the online detection of all the materials, ensuring the delivered products to be qualified products and avoiding the product qualification rate evaluation through product sampling inspection.
Description
Technical Field
The invention relates to the technical field of vacuum detection, in particular to a connecting device for entering and exiting a negative pressure environment and a detection method.
Background
The existing negative pressure detection platforms are independent individuals, and during detection, an object to be detected needs to be placed in the platform under a normal pressure environment, then the platform is sealed and vacuumized, and the state of the object to be detected under the negative pressure environment is observed, so that whether the object leaks air or not is judged. The negative pressure detection platform is independent of the production line, a batch of produced materials can be only subjected to sampling detection, and produced products cannot be detected, so that the possibility of detection omission of poor products is increased, and the condition is caused mainly because the platform in the negative pressure environment is a closed space, external atmosphere does not exist, a proper transition device does not exist, and once the negative pressure environment is communicated with the outside, the negative pressure environment cannot be formed. In view of this, it is urgently needed to find a new transition mode for entering and exiting the negative pressure environment so as to enable the negative pressure detection platform to be connected to the production line, thereby realizing the automatic detection of all materials.
Patent document CN 208043358U discloses a food is with aerifing wrapping bag detection device, and it includes frame, pressure measurement device and sets up the vertical baffle in the frame, pressure measurement device is including detecting the head and establishing the cylinder in the frame, detects the head and fixes on the piston rod of cylinder, and the direction of motion level of piston rod detects the head and keeps away from the one end of cylinder and is equipped with pressure sensor and is used for showing the display screen of the pressure value of the pressure sensor that surveys, vertical baffle perpendicular to cylinder piston rod.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a connecting device for entering and exiting a negative pressure detection environment and a detection method.
The invention provides a connecting device for passing in and out of a negative pressure detection environment, which comprises a base body, an upper cover plate, a lower cover plate and a middle rotor, wherein the upper cover plate is arranged on the base body;
a hollow cavity is arranged in the base body, the hollow cavity can contain a middle rotor, a sealing element is arranged at the contact position of the middle rotor and the inner surface of the base body, the middle rotor divides the hollow cavity into an upper cavity and a lower cavity, and air exchange cannot be carried out between the upper cavity and the lower cavity;
the upper end extension part of the base body is connected with an upper cover plate, and a feed inlet is formed in the upper cover plate;
the lower end extension part of the base body is connected with a lower cover plate, and a discharge hole is formed in the lower cover plate;
the middle rotor is provided with a first hole and a second hole which correspond to the feeding hole and the discharging hole respectively, and when the middle rotor rotates, materials enter a negative pressure detection environment through the feeding hole and the first hole.
Preferably, the hollow cavity is cylindrical, and a sealing groove is formed in the middle of the hollow cavity;
and sealing grooves are arranged at the joint of the base body and the upper cover plate and the joint of the lower cover plate.
Preferably, a rotating shaft is arranged at the middle position of the upper cover plate and the middle position of the lower cover plate, and the middle rotor is driven by a power device to rotate along the rotating shaft.
Preferably, the interrotor is cylindrical and comprises a first component, a second component and a third component;
the first component and the third component are arranged oppositely, the first component is positioned at one side of the second component, and the third component is positioned at the other side of the second component;
seal isolation is respectively arranged among the first assembly, the second assembly and the third assembly, so that air pressure in the first assembly and the third assembly is isolated.
Preferably, the middle rotor rotates the initial stage, first hole and feed inlet coincidence connect atmosphere and form the ordinary pressure, the second hole and discharge gate coincidence are connected the negative pressure and are detected the environment and form the negative pressure.
Preferably, a first hole is formed in the first assembly, and the feed inlet and the first hole can be overlapped when the intermediate rotor rotates.
Preferably, set up the second hole in the third subassembly, discharge gate and second hole can coincide when interrotor rotates.
Preferably, the second assembly is internally divided into a first area and a second area, the first area and the second area are symmetrical about the center of the middle rotor, and grooves are respectively arranged in the first area and the second area.
According to the detection method for the inlet and outlet negative pressure environment, the connecting device for the inlet and outlet negative pressure environment is utilized, and the detection method is characterized in that the intermediate rotor is in an initial state and a rotating state;
in the initial state, the first hole is superposed with the feed inlet and connected with the atmosphere, normal pressure is formed in the first hole, the second hole is superposed with the discharge outlet and connected with a negative pressure detection environment, and negative pressure is formed in the second hole;
during the rotation state, first hole stagger with the feed inlet and when first hole is rotatory to the position in second hole, the negative pressure is taken out by the vacuum pump of negative pressure testing environment to the downthehole atmospheric pressure of first hole, and the position in rotatory to first hole in second hole forms the ordinary pressure in the second hole.
Compared with the prior art, the invention has the following beneficial effects:
the device can be connected with an atmosphere and negative pressure environment detection platform, so that the materials which are inflated and packaged can smoothly enter and exit the negative pressure detection platform, the online detection of all the materials is realized, the outgoing products are qualified products, and the qualification rate of the products is prevented from being evaluated through product spot check.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the device during inspection;
FIG. 2 is a schematic diagram of the structure of the apparatus;
FIG. 3 is a schematic view of the structure of a substrate;
fig. 4 is a schematic view of the structure of the interrotor.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a technical scheme for entering and exiting a negative pressure environment, which is used for connecting an atmosphere and a negative pressure environment detection platform, so that materials which are inflated and packaged can smoothly enter and exit the negative pressure detection platform, thereby realizing the online detection of all the materials and ensuring that products which leave a factory are qualified.
In specific implementation, the connecting device for the inlet and outlet negative pressure detection environment comprises a base body, an upper cover plate, a lower cover plate and a middle rotor; a hollow cavity is arranged in the base body, the hollow cavity can contain a middle rotor, a sealing element is arranged at the contact position of the middle rotor and the inner surface of the base body, the middle rotor divides the hollow cavity into an upper cavity and a lower cavity, and air exchange cannot be carried out between the upper cavity and the lower cavity; the upper end extension part of the base body is connected with an upper cover plate, and a feed inlet is formed in the upper cover plate; the lower end extension part of the base body is connected with a lower cover plate, and a discharge hole is formed in the lower cover plate; the middle rotor is provided with a first hole and a second hole which correspond to the feeding hole and the discharging hole respectively, and when the middle rotor rotates, materials enter a negative pressure detection environment through the feeding hole and the first hole. The hollow cavity is cylindrical, and a sealing groove is formed in the middle of the hollow cavity; the joint of the base body and the upper cover plate and the joint of the lower cover plate are both provided with sealing grooves. And the middle position of the upper cover plate and the middle position of the lower cover plate are provided with rotating shafts, and the middle rotor is driven by a power device to rotate along the rotating shafts. The middle rotor is cylindrical and comprises a first component, a second component and a third component; the first component and the third component are arranged oppositely, the first component is positioned at one side of the second component, and the third component is positioned at the other side of the second component; seal isolation is respectively arranged among the first assembly, the second assembly and the third assembly, so that air pressure in the first assembly and the third assembly is isolated. Set up first hole in the first subassembly, feed inlet and first hole can coincide when middle rotor rotates. Set up the second hole in the third subassembly, discharge gate and second hole can coincide when middle rotor rotates. The second assembly is internally divided into a first area and a second area, the first area and the second area are symmetrical with the center of the middle rotor, and grooves are respectively arranged in the first area and the second area. At the initial stage of rotation of the middle rotor, the first hole coincides with the feed inlet and is connected with the atmosphere to form normal pressure, and the second hole coincides with the discharge outlet and is connected with a negative pressure detection environment to form negative pressure.
In the method for detecting the negative pressure environment by adopting the device, the intermediate rotor is in an initial state and a rotating state; in the initial state, the first hole is superposed with the feed inlet and connected with the atmosphere, normal pressure is formed in the first hole, the second hole is superposed with the discharge outlet and connected with a negative pressure detection environment, and negative pressure is formed in the second hole; during the rotation state, first hole stagger with the feed inlet and when first hole is rotatory to the position in second hole, the negative pressure is taken out by the vacuum pump of negative pressure testing environment to the downthehole atmospheric pressure of first hole, and the position in rotatory to first hole in second hole forms the ordinary pressure in the second hole.
As shown in fig. 1 and fig. 2, the connecting device for passing in and out of negative pressure environment comprises an upper transparent base body and a lower transparent base body, an upper cover plate is arranged, a lower cover plate covers, a hole is formed in the upper cover plate, an inlet corresponding to a material is formed in the lower cover plate, an outlet corresponding to the material is formed in the lower cover plate, a rotor is arranged between the upper cover plate and the lower cover plate, the rotor is driven by a power device and rotates around a fixed shaft, two holes are formed in the rotor, the incoming beat of the material is controlled, when the hole in the rotor coincides with a feeding hole, the material enters, after the rotor rotates 180 degrees, the hole in the rotor corresponds to the hole in the upper cover plate and the hole in the lower cover plate. The device is connected with the negative pressure environment platform, so that the online detection of all materials is realized.
As shown in FIG. 2, the upper cover plate and the lower cover plate are a finished plate, which is provided with a hole, and the hole is staggered when being installed on the base body, one is a feed inlet, the other is a discharge outlet, and the middle position is provided with a rotor rotating shaft.
As shown in figure 3, the base body is a hollow whole piece, the middle part is used for mounting the rotor and is precisely matched with the rotor, a sealing groove is formed in the middle position of the upper center and the lower center of a hole in the base body, a sealing element is mounted to separate the lower surface of the rotor to ensure that air cannot be exchanged up and down from the outer part of the rotor, and a sealing groove is formed in the surface, in contact with the upper cover plate and the lower cover plate, of the base body to ensure that the external air cannot enter from a joint after the upper cover plate and the lower cover. The power source for providing the rotation of the rotor selects the servo motor, and the rotating speed and the stopping position of the rotor can be accurately ensured.
As shown in figure 4, the rotor is a cylinder structure, the upper surface is opened with 2 holes, the size is consistent with the holes opened on the upper cover plate and the lower cover plate, meanwhile, the upper surface and the lower surface of the rotor are divided into 3 areas of an area A, an area B and an area C by a sealing groove, in the initial state, the holes in the area A are superposed with the holes on the upper cover plate and are connected with the atmosphere, the pressure in the holes is standard atmospheric pressure, the holes in the area C are superposed with the holes on the lower cover plate and are connected with a negative pressure environment, the pressure in the holes is negative pressure, as 3 sealing devices are separated among the areas, the negative pressure in the area C can not influence the positions of the area B and the area A, the rotor rotates, the area A turns to the position of the area C, once the sealing devices outside the area A exceed the holes of the upper cover plate in the rotating process, the area A is isolated until the area C is turned to the position of the area C, and, at the moment, the air pressure of the area A is pumped into negative pressure by a vacuum pump in a negative pressure environment, the position of the area C is rotated to the original position of the area A, the area C is communicated with the atmosphere, the air pressure in the upper hole is changed into the atmospheric pressure, then the material enters the upper hole, the above process is repeated, the area B is used as a transition area, the pressure of the area B in contact with the upper cover plate is the atmospheric pressure, the area B in contact with the lower cover plate is the negative pressure, and therefore the material can be smoothly fed into the negative pressure detection environment as long as the beat is controlled.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. A connecting device for entering and exiting a negative pressure detection environment is characterized by comprising a base body, an upper cover plate, a lower cover plate and a middle rotor;
a hollow cavity is arranged in the base body, the hollow cavity can contain a middle rotor, a sealing element is arranged at the contact position of the middle rotor and the inner surface of the base body, the middle rotor divides the hollow cavity into an upper cavity and a lower cavity, and air exchange cannot be carried out between the upper cavity and the lower cavity;
the upper end extension part of the base body is connected with an upper cover plate, and a feed inlet is formed in the upper cover plate;
the lower end extension part of the base body is connected with a lower cover plate, and a discharge hole is formed in the lower cover plate;
the middle rotor is provided with a first hole and a second hole which correspond to the feeding hole and the discharging hole respectively, and when the middle rotor rotates, materials enter a negative pressure detection environment through the feeding hole and the first hole.
2. The connection device for accessing negative pressure environment as claimed in claim 1, wherein the hollow cavity is cylindrical, and a sealing groove is disposed in the middle of the hollow cavity;
and sealing grooves are arranged at the joint of the base body and the upper cover plate and the joint of the lower cover plate.
3. The apparatus as claimed in claim 1, wherein a rotation shaft is provided at a middle position of the upper cover plate and a middle position of the lower cover plate, and the middle rotor is driven by a power device to rotate along the rotation shaft.
4. The connection means for accessing a negative pressure environment of claim 1, wherein the interrotor is cylindrical and comprises a first component, a second component, and a third component;
the first component and the third component are arranged oppositely, the first component is positioned at one side of the second component, and the third component is positioned at the other side of the second component;
seal isolation is respectively arranged among the first assembly, the second assembly and the third assembly, so that air pressure in the first assembly and the third assembly is isolated.
5. The apparatus as claimed in claim 1, wherein the first hole coincides with the inlet port to connect to atmosphere to form atmospheric pressure, and the second hole coincides with the outlet port to connect to the negative pressure detection environment to form negative pressure at the initial stage of rotation of the interrotor.
6. The connection device for accessing a negative pressure environment of claim 4, wherein a first hole is provided in the first assembly, and the feed port and the first hole can coincide when the interrotor rotates.
7. The connection device for accessing a negative pressure environment of claim 4, wherein a second hole is provided in the third component, and the discharge port and the second hole can be overlapped when the interrotor rotates.
8. The connection device for accessing a negative pressure environment of claim 4, wherein the second module is divided into a first region and a second region, the first region and the second region are symmetrical about the center of the interrotor, and the first region and the second region are respectively provided with a groove.
9. A method for detecting access to a negative pressure environment, using the connection device for access to a negative pressure environment of claims 1 to 5, characterized in that the interrotor is in a starting state and in a rotating state;
in the initial state, the first hole is superposed with the feed inlet and connected with the atmosphere, normal pressure is formed in the first hole, the second hole is superposed with the discharge outlet and connected with a negative pressure detection environment, and negative pressure is formed in the second hole;
during the rotation state, first hole stagger with the feed inlet and when first hole is rotatory to the position in second hole, the negative pressure is taken out by the vacuum pump of negative pressure testing environment to the downthehole atmospheric pressure of first hole, and the position in rotatory to first hole in second hole forms the ordinary pressure in the second hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437106.3A CN111572898A (en) | 2020-05-21 | 2020-05-21 | Connecting device for entering and exiting negative pressure environment and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437106.3A CN111572898A (en) | 2020-05-21 | 2020-05-21 | Connecting device for entering and exiting negative pressure environment and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111572898A true CN111572898A (en) | 2020-08-25 |
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ID=72123335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010437106.3A Pending CN111572898A (en) | 2020-05-21 | 2020-05-21 | Connecting device for entering and exiting negative pressure environment and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111572898A (en) |
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2020
- 2020-05-21 CN CN202010437106.3A patent/CN111572898A/en active Pending
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