CN215931204U

CN215931204U - Air tightness detection device based on venturi positive pressure conveying

Info

Publication number: CN215931204U
Application number: CN202122305991.2U
Authority: CN
Inventors: 郑晓艳
Original assignee: Jiangsu Longjing Mechanical Equipment Co ltd
Current assignee: Jiangsu Longjing Mechanical Equipment Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-01
Anticipated expiration: 2031-09-23

Abstract

The utility model belongs to the technical field of air leakage detection devices, and particularly relates to an air tightness detection device based on venturi positive pressure conveying. According to the utility model, by arranging the positioning plate, the cushion pad, the movable rod, the sliding block, the buffer spring, the sliding rod, the lead screw, the connecting block, the spring, the connecting piece, the fixing plate and the supporting plate, the improved detection device avoids abrasion to the top end of the Venturi positive pressure tube in the use process, improves the contact tightness with a product to be detected in the detection use process, improves the detection accuracy, simultaneously improves the fixing effect of the product to be detected, improves the detection effect of the device on the product to be detected, and has strong applicability.

Description

Air tightness detection device based on venturi positive pressure conveying

Technical Field

The utility model relates to the technical field of air leakage detection devices, in particular to an air tightness detection device based on venturi positive pressure conveying.

Background

Airtightness is an index reflecting the degree of tightness of the device, and the quality of airtightness of the device is related to whether the device has a defect that a leak occurs. Therefore, for some devices with higher quality requirements, the air tightness detection is very necessary before the production plant, the LED lamp is used outdoors and needs to reach the IP67 waterproof standard, so the lamp shell needs to detect whether cracks exist, the shell is made of PC + carbon materials, the flowability is poor during injection molding, fine cracks are easily generated during molding, and the air leakage detection device is adopted for rapidly detecting whether the air leakage detection device is qualified or not in order to achieve the effect of detecting the cracks.

The prior art has the following problems:

general gas tightness detection device passes through the driving piece with the gas injection pipe with wait to detect the product contact, then carries out the gas injection effect to it, and the change of observing gas injection pipe internal pressure judges whether the gas tightness of waiting to detect the product is good, simple structure uses the gas injection pipe for a long time and waits to detect the product contact friction, leads to the junction gas tightness variation, has influenced the detection accuracy of device.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the air tightness detection device based on the positive pressure Venturi conveying, and solves the problems that the detection accuracy is influenced because the gas injection pipe and a product to be detected are easily abraded after long-term use at present.

In order to achieve the purpose, the utility model provides the following technical scheme: a gas tightness detection device based on positive pressure Venturi conveying comprises a device main body, wherein a liquid crystal screen is arranged on the front side of the device main body, a positive Venturi pipe is arranged inside the device main body, a positioning plate is arranged on the outer side of the positive Venturi pipe, a buffering cushion is arranged at the lower end of the positioning plate, a movable rod is arranged on one side of the positioning plate, a sliding block is arranged at one end of the movable rod, one side of the sliding block is connected with a buffering spring, a sliding rod is arranged inside the sliding block, a supporting plate is arranged at the lower end of the positive Venturi pipe, a hydraulic telescopic rod is connected to the lower end of the supporting plate, a control valve is arranged on one side of the supporting plate, a fixing plate is arranged on the upper surface of the supporting plate, a connecting piece is connected to the lower end of the fixing plate, a spring is connected to one side of the connecting piece, and a connecting block is connected to one end of the spring, and a screw rod is arranged in the connecting block.

As a preferred technical scheme of the utility model, the movable rods are divided into four groups, the movable rods are centrally and symmetrically distributed on the outer side of the positioning plate, a round hole is formed in the center of the positioning plate, and the inner diameter of the round hole is matched with the diameter of the venturi positive pressure pipe.

As a preferred technical scheme of the utility model, the movable rod is rotatably connected with the positioning plate through a shaft body, the movable rod is rotatably connected with the sliding block through the shaft body, and the sliding block is slidably connected with the sliding rod through a buffer spring.

As a preferable technical solution of the present invention, one end of the screw rod is connected with a first bevel gear, one side of the first bevel gear is provided with a second bevel gear, the lower end of the second bevel gear is provided with a servo motor, and the first bevel gear is rotationally connected with the second bevel gear.

As a preferred technical scheme of the utility model, the number of the fixing plates is four, and the fixing plates are centrally and symmetrically distributed on the upper surface of the supporting plate.

As a preferable technical scheme of the utility model, the surface of the connecting piece is provided with a sliding groove, the inner diameter size of the sliding groove is matched with the diameter size of the screw rod, and the connecting piece is in sliding connection with the screw rod through the sliding groove.

According to a preferable technical scheme of the utility model, a thread groove is formed in the connecting block, the inner diameter of the thread groove is matched with the diameter of the screw rod, and the connecting block is in threaded connection with the screw rod through the thread groove.

Compared with the prior art, the utility model provides the air tightness detection device based on the positive pressure Venturi conveying, which has the following beneficial effects:

1. this gas tightness detection device based on venturi malleation is carried is through setting up the locating plate, the blotter, the movable rod, the slider, buffer spring and slide bar, detection device after the improvement is in the use, when treating and wait to detect product contact blotter, the movable rod can take place to rotate, the slider slides on the slide bar surface, buffer spring takes place to deform, can treat the effort that detects the production motion and produce and carry out certain cushioning effect, avoid it directly to contact with venturi malleation pipe, avoid causing wearing and tearing to venturi malleation pipe top, the leakproofness with treating to detect the product contact in the detection use has been improved, the accuracy of detection has been improved, can also play certain limiting displacement simultaneously, avoid appearing waiting to detect the condition that the product slided in the testing process, the improvement is treated the guard effect who detects the product.

2. This gas tightness detection device based on venturi malleation is carried is through setting up the lead screw, the connecting block, a spring, the connecting piece, fixed plate and backup pad, before treating to detect the product and detect, take the connecting block through the lead screw, spring and fixed plate star lake are close to and remove, wait to detect when the product when the fixed plate contact, the lead screw takes the connecting block to continue to move, deformation can take place for the spring, the improvement treats the fixed effect of detecting the product, the effect that detects the product detection is treated to the improvement device, can be applicable to the fixed action of not unidimensional product simultaneously, the suitability of device has been improved.

Drawings

FIG. 1 is a schematic front view of an air tightness detecting device according to the present invention;

FIG. 2 is a schematic structural diagram of the air tightness detecting device according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at the position A of the present invention;

fig. 4 is a bottom view schematically illustrating the structure of the cushion pad.

In the figure: 1. a device main body; 2. a liquid crystal screen; 3. a venturi positive pressure tube; 4. positioning a plate; 5. a cushion pad; 6. a movable rod; 7. a slider; 8. a buffer spring; 9. a slide bar; 10. a support plate; 11. a hydraulic telescopic rod; 12. a control valve; 13. a fixing plate; 14. a connecting member; 15. a spring; 16. connecting blocks; 17. and a screw rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: a gas tightness detection device based on Venturi positive pressure conveying comprises a device main body 1, a liquid crystal screen 2 is arranged on the front side of the device main body 1 and used for operation and observation, a Venturi positive pressure pipe 3 is arranged inside the device main body 1, a positioning plate 4 is arranged on the outer side of the Venturi positive pressure pipe 3 and used for protecting the Venturi positive pressure pipe 3, a buffer cushion 5 is arranged at the lower end of the positioning plate 4, a movable rod 6 is arranged on one side of the positioning plate 4, a slide block 7 is arranged at one end of the movable rod 6, a buffer spring 8 is connected to one side of the slide block 7, a slide rod 9 is arranged inside the slide block 7, a supporting plate 10 is arranged at the lower end of the Venturi positive pressure pipe 3, a hydraulic telescopic rod 11 is connected to the lower end of the supporting plate 10 and used for driving a product to be detected to ascend and descend, a control valve 12 is arranged on one side of the supporting plate 10, and a fixing plate 13 is arranged on the upper surface of the supporting plate 10, a fixed action for waiting to detect the product, the lower extreme of fixed plate 13 is connected with connecting piece 14, and one side of connecting piece 14 is connected with spring 15, and the one end of spring 15 is connected with connecting block 16, and the inside of connecting block 16 is provided with lead screw 17.

In the embodiment, the movable rods 6 are divided into four groups, the movable rods 6 are centrally and symmetrically distributed on the outer side of the positioning plate 4, a circular hole is formed in the center of the positioning plate 4, the inner diameter of the circular hole is matched with the diameter of the venturi positive pressure pipe 3, and the structure is simple and reasonable; the movable rod 6 is rotatably connected with the positioning plate 4 through a shaft body, the movable rod 6 is rotatably connected with the sliding block 7 through the shaft body, and the sliding block 7 is slidably connected with the sliding rod 9 through the buffer spring 8, so that the damage to the tube head of the Venturi positive pressure tube 3 when a product to be detected rises is prevented, and the service life of the device is prolonged; one end of the screw rod 17 is connected with a first bevel gear, one side of the first bevel gear is provided with a second bevel gear, the lower end of the second bevel gear is provided with a servo motor, and the first bevel gear is rotationally connected with the second bevel gear; the four fixing plates 13 are distributed on the upper surface of the supporting plate 10 in a centrosymmetric manner, so that the stability of a product to be detected in the detection process is improved, and the detection accuracy of the device is improved; the surface of the connecting piece 14 is provided with a sliding chute, the inner diameter size of the sliding chute is matched with the diameter size of the screw rod 17, and the connecting piece 14 is in sliding connection with the screw rod 17 through the sliding chute, so that a product to be detected is protected to a certain extent, and the using effect is good; thread groove is opened to connecting block 16's inside, and the internal diameter size of thread groove and the diameter size phase-match of lead screw 17, and connecting block 16 passes through thread groove and lead screw 17 threaded connection, rational in infrastructure.

The working principle and the using process of the utility model are as follows: when the product to be detected is subjected to air tightness detection, a user places the product to be detected on the supporting plate 10, then the device is started, the servo motor drives the bevel gears to rotate, the screw rod 17 drives the connecting block 16, the spring 15 and the fixing plate 13 to move, when the fixing plate 13 contacts the product to be detected, the connecting block 16 continues to move, the spring 15 is compressed, when the screw rod 17 rotates to a certain angle, the operator stops rotating the servo motor through the liquid crystal screen 2, at the moment, the hydraulic telescopic rod 11 lengthens to drive the product to be detected to move upwards, when the product to be detected contacts the cushion pad 5, the movable rod 6 rotates, the sliding block 7 moves on the sliding rod 9, the cushion spring 8 deforms, when the venturi positive pressure pipe 3 contacts the product to be detected, the length of the hydraulic telescopic rod 11 is fixed, and the device can drive the internal pressure of the product to be detected to become low through the venturi positive pressure pipe 3, whether the operation is stable through observing the venturi structure internal pressure of LCD screen 2 judges to detect the product whether leak gas can.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an air tightness detection device based on venturi malleation is carried, includes device main part (1), its characterized in that: the front of the device main body (1) is provided with a liquid crystal screen (2), the inside of the device main body (1) is provided with a Venturi positive pressure pipe (3), the outer side of the Venturi positive pressure pipe (3) is provided with a positioning plate (4), the lower end of the positioning plate (4) is provided with a cushion pad (5), one side of the positioning plate (4) is provided with a movable rod (6), one end of the movable rod (6) is provided with a sliding block (7), one side of the sliding block (7) is connected with a buffer spring (8), the inside of the sliding block (7) is provided with a sliding rod (9), the lower end of the Venturi positive pressure pipe (3) is provided with a supporting plate (10), the lower end of the supporting plate (10) is connected with a hydraulic telescopic rod (11), one side of the supporting plate (10) is provided with a control valve (12), the upper surface of the supporting plate (10) is provided with a fixing plate (13), the lower extreme of fixed plate (13) is connected with connecting piece (14), one side of connecting piece (14) is connected with spring (15), the one end of spring (15) is connected with connecting block (16), the inside of connecting block (16) is provided with lead screw (17).

2. The airtightness detection device based on positive pressure venturi delivery according to claim 1, wherein: the movable rods (6) are divided into four groups, the movable rods (6) are distributed on the outer side of the positioning plate (4) in a central symmetrical mode, a round hole is formed in the center of the positioning plate (4), and the inner diameter of the round hole is matched with the diameter of the venturi positive pressure pipe (3).

3. The airtightness detection device based on positive pressure venturi delivery according to claim 1, wherein: the movable rod (6) is rotatably connected with the positioning plate (4) through a shaft body, the movable rod (6) is rotatably connected with the sliding block (7) through the shaft body, and the sliding block (7) is slidably connected with the sliding rod (9) through a buffer spring (8).

4. The airtightness detection device based on positive pressure venturi delivery according to claim 1, wherein: one end of the screw rod (17) is connected with a first bevel gear, one side of the first bevel gear is provided with a second bevel gear, the lower end of the second bevel gear is provided with a servo motor, and the first bevel gear is rotationally connected with the second bevel gear.

5. The airtightness detection device based on positive pressure venturi delivery according to claim 1, wherein: the number of the fixing plates (13) is four, and the fixing plates (13) are distributed on the upper surface of the supporting plate (10) in a central symmetry mode.

6. The airtightness detection device based on positive pressure venturi delivery according to claim 1, wherein: the surface of the connecting piece (14) is provided with a sliding groove, the inner diameter of the sliding groove is matched with the diameter of the screw rod (17), and the connecting piece (14) is connected with the screw rod (17) in a sliding mode through the sliding groove.

7. The airtightness detection device based on positive pressure venturi delivery according to claim 1, wherein: the connecting block (16) is internally provided with a thread groove, the inner diameter of the thread groove is matched with the diameter of the screw rod (17), and the connecting block (16) is in threaded connection with the screw rod (17) through the thread groove.