CN212567783U

CN212567783U - Vacuum calibration device

Info

Publication number: CN212567783U
Application number: CN202021534562.1U
Authority: CN
Inventors: 王金涛
Original assignee: Qingdao Zhongce Testing Technology Service Co ltd
Current assignee: Qingdao Zhongce Testing Technology Service Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-02-19
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a vacuum calibrating device, including the calibrator main part, the protective housing has been cup jointed in the outside of calibrator main part, the upside of protective housing articulates there is the case lid, the ventilation hole has been seted up to the left surface downside of protective housing, sealing device is installed to the left surface downside of protective housing, sealing device includes that protective housing left surface rotates the electric putter of installation through rotating the seat, the left side in ventilation hole articulates there is the baffle, the left surface upper end fixed mounting of baffle has the dwang, the left end of dwang rotates the assembly with electric putter's telescopic link lower extreme, the right side fixed mounting of baffle has sealed the pad, sealed pad closely laminates in the inside in ventilation hole. This device can seal up the ventilation hole or open control, avoids the ventilation hole to expose for a long time outside, leads to inside dust and the foreign matter entering of vacuum calibration device, causes components and parts ageing or damage, and protective capacities is strong.

Description

Vacuum calibration device

Technical Field

The utility model relates to a vacuum calibration technical field specifically is a vacuum calibrating device.

Background

The vacuum calibration device provides a working mode with simple and convenient operation and high efficiency for automatic pressure measurement and instrument calibration, can fully automatically control and output the set target pressure, and can realize stable pressure and constant pressure; the output pressure has high precision and control stability, and a standard pressure source is provided.

The vacuum calibration device that uses at present needs the ventilation hole on the box to take a breath to produce the pressure of standard and supply the calibration to use, the ventilation hole exposes outside for a long time when not using, attaches dust and foreign matter easily, gets into inside can the components and parts ageing damage even of vacuum calibration device, and protective capacities is poor, in order to solve above-mentioned problem, we propose a vacuum calibration device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum calibrating device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a vacuum calibration device, includes the calibrator main part, the protective housing has been cup jointed in the outside of calibrator main part, the upside of protective housing articulates there is the case lid, the ventilation hole has been seted up to the left surface downside of protective housing, sealing device is installed to the left surface downside of protective housing, sealing device includes that the protective housing left surface rotates the electric putter of installation through rotating the seat, the left side in ventilation hole articulates there is the baffle, the left surface upper end fixed mounting of baffle has the dwang, the left end of dwang rotates the assembly with electric putter's telescopic link lower extreme, the right side fixed mounting of baffle has sealed the pad, sealed pad closely laminates in the inside in ventilation hole.

Preferably, the inner left end of the ventilation hole is provided with an extrados surface, the right end of the outer surface of the sealing gasket is provided with an intrados surface, and the intrados surface is tightly attached to the inner portion of the extrados surface.

Preferably, a rubber tube is fixedly mounted on the left side of the ventilation opening of the calibrator main body, and the left side of the rubber tube is fixedly assembled with the ventilation hole.

Preferably, a filter screen assembly is fixedly mounted on the right side inside the ventilation hole.

Preferably, one end of an air spring is uniformly and fixedly installed on the outer surface of the calibrator main body, and the other end of the air spring is fixedly assembled with the inner surface of the protective box.

Preferably, a buffer pad is fixedly mounted inside the box cover, and a groove matched with the operation surface of the calibrator main body is formed in the lower surface of the buffer pad.

Compared with the prior art, the beneficial effects of the utility model are that: this vacuum calibration device can seal or open control the ventilation hole, avoids the ventilation hole to expose for a long time outside, leads to inside dust and the foreign matter entering of vacuum calibration device, causes components and parts ageing or damage, and protective capacities is strong.

Drawings

Fig. 1 is a schematic cross-sectional view of the structure of the present invention.

Fig. 2 is a schematic cross-sectional view of the sealing device of the present invention.

In the figure: 1 calibrator main part, 2 protective housing, 3 air spring, 4 rubber hoses, 5 filter screen subassemblies, 6 ventilation holes, 7 sealing device, 71 electric push rod, 72 dwang, 73 baffle, 74 sealed pad, 8 case lid, 9 blotter, 10 recess, 11 extrados, 12 intrados.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a vacuum calibration device, including calibrator main part 1, protective housing 2 has been cup jointed in the outside of calibrator main part 1, the upside of protective housing 2 articulates there is case lid 8, ventilation hole 6 has been seted up to the left surface downside of protective housing 2, sealing device 7 is installed to the left surface downside of protective housing 2, sealing device 7 includes that protective housing 2 left surface rotates the electric putter 71 of installation through rotating the seat, the left side of ventilation hole 6 articulates there is baffle 73, the left surface upper end fixed mounting of baffle 73 has dwang 72, the left end of dwang 72 and electric putter 71's telescopic link lower extreme rotation assembly, the right side fixed mounting of baffle 73 has sealed pad 74, sealed pad 74 closely laminates in the inside in ventilation hole 6.

The calibrator body 1 and the electric push rod 71 are electrically connected by a lead, and the calibrator body 1 is electrically connected to an external power supply by a lead. The electric push rod 71 of the sealing device 7 can be controlled to extend and contract, and the rotating rod 72 is pushed and pulled, so that the rotating baffle plate 73 and the sealing gasket 74 seal or open the vent hole 6.

The inside left end of ventilation hole 6 has seted up extrados 11, and the surface right-hand member of sealed 74 has seted up intrados 12, and intrados 12 closely laminates in extrados 11's inside.

The inner arc surface 12 and the outer arc surface 11 are in interference fit, so that good sealing performance can be achieved when the sealing gasket 74 is buckled.

The left side of the ventilation opening of the calibrator main body 1 is fixedly provided with a rubber tube 4, and the left side of the rubber tube 4 is fixedly assembled with the ventilation hole 6.

Rubber tube 4 is made for flexible material, can still guarantee to ventilate when relative displacement takes place for calibrator main part 1 and ventilation hole 6 to carry smoothly.

A filter screen assembly 5 is fixedly installed at the right side of the inside of the ventilation hole 6. Air entering the vent holes 6 can be filtered by the filter screen assembly 5, and foreign objects are prevented from entering the vent holes.

One end of an air spring 3 is uniformly and fixedly arranged on the outer surface of the calibrator body 1, and the other end of the air spring 3 is fixedly assembled with the inner surface of the protective box 2.

The air spring 3 is an existing damping element composed of fixing disks at two ends and an inner rubber air bag, and can absorb impact and vibration on the protective box 2 and avoid the impact and the vibration from being transmitted to the calibrator main body 1 to damage internal components.

A buffer pad 9 is fixedly arranged in the box cover 8, and a groove 10 matched with the operation surface of the calibrator main body 1 is formed in the lower surface of the buffer pad 9.

Through the cooperation of blotter 9 and recess 10, can be when lock and locking case lid 8, with the abundant contact of 1 operation surface of calibrator main part, avoid the drunkenness to collide with.

The working principle is as follows: when the vacuum calibrator is used, the electric push rod 71 in the sealing device 7 is controlled to stretch and retract through the operating surface of the calibrator main body 1, the rotating rod 72 is pushed and pulled, so that the baffle 73 and the sealing gasket 74 are rotated to open the ventilation hole 6 for ventilation, and the vacuum calibration operation is performed through the calibrator main body 1; after the air conditioner is used, the baffle plate 73 is buckled, and the inner arc surface 12 on the sealing gasket 74 is tightly attached to the outer arc surface 11 in the vent hole 6 and is in interference fit; the box cover 8 hinged to the protection box 2 is buckled, the box cover 8 and a lock catch on the protection box 2 are locked, and meanwhile, the buffer cushion 9 is matched with the groove 10 and can be fully contacted with the operation surface of the calibrator main body 1, so that the shifting collision is avoided; the air spring 3 can absorb impact and vibration on the protective box 2 and avoid transmitting the impact and the vibration to the calibrator main body 1 to damage internal components.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A vacuum calibration device, characterized by: the calibration instrument comprises a calibration instrument main body (1), wherein a protective box (2) is sleeved on the outer side of the calibration instrument main body (1), a box cover (8) is hinged to the upper side of the protective box (2), a ventilation hole (6) is formed in the lower side of the left surface of the protective box (2), and a sealing device (7) is installed on the lower side of the left surface of the protective box (2);

sealing device (7) include guard box (2) left surface and rotate electric putter (71) of installation through rotating the seat, the left side of ventilation hole (6) articulates there is baffle (73), the left surface upper end fixed mounting of baffle (73) has dwang (72), the left end of dwang (72) rotates the assembly with electric putter's (71) telescopic link lower extreme, the right side fixed mounting of baffle (73) has sealed pad (74), sealed pad (74) closely laminates in the inside of ventilation hole (6).

2. A vacuum calibration device according to claim 1, wherein: the inside left end in ventilation hole (6) has been seted up extrados (11), intrados (12) have been seted up to the surface right-hand member of sealed pad (74), intrados (12) closely laminate in extrados (11) inside.

3. A vacuum calibration device according to claim 1, wherein: the left side of the ventilation opening of the calibrator main body (1) is fixedly provided with a rubber tube (4), and the left side of the rubber tube (4) is fixedly assembled with the ventilation hole (6).

4. A vacuum calibration device according to claim 1, wherein: and a filter screen assembly (5) is fixedly arranged on the right side in the ventilation hole (6).

5. A vacuum calibration device according to claim 1, wherein: the outer surface of the calibrator main body (1) is uniformly and fixedly provided with one end of an air spring (3), and the other end of the air spring (3) is fixedly assembled with the inner surface of the protective box (2).

6. A vacuum calibration device according to claim 1, wherein: the inside fixed mounting of case lid (8) has blotter (9), recess (10) that match with calibrator main part (1) operation face are seted up to the lower surface of blotter (9).