CN216449092U

CN216449092U - Movable vacuum calibration device

Info

Publication number: CN216449092U
Application number: CN202122712958.1U
Authority: CN
Inventors: 梁盈盈; 罗朋飞; 林红
Original assignee: Chengdu Guoguang Electric Co Ltd
Current assignee: Chengdu Guoguang Electric Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-05-06
Anticipated expiration: 2031-11-08

Abstract

The utility model provides a movable vacuum calibration device which comprises a lifting box seat, a middle arc sleeve seat, an upper lifting box body, an arc distribution sleeve, a limiting righting sliding rod and a stable locking connecting bolt, wherein a lower arc base is arranged in the lifting box seat, the middle arc sleeve seat is arranged outside the lower arc base in clearance fit, an upper arc seat is arranged in the upper lifting box body, the arc distribution sleeve is in clearance fit with the outside of the upper arc base, the limiting righting sliding rod is respectively in sliding fit with the middle arc sleeve seat or the arc distribution sleeve, and the stable locking connecting bolt connects and locks the lower arc base with the middle arc sleeve seat and the upper arc base with the arc distribution sleeve. The utility model adopts the connection of the lower arc base, the middle arc sleeve seat, the upper arc seat and the arc matching sleeve to form a vacuum cavity, can be respectively matched with each other in pairs for contraction, respectively carries and loads the box body by carrying the box seat and the upper box body, ensures the reduction of the whole size, reduces the packaging volume, is convenient for carrying, moving and transporting, and is convenient for storage in a narrow space.

Description

Movable vacuum calibration device

Technical Field

The utility model relates to a mobile vacuum calibration device.

Background

The vacuum calibration device is a calibration device combining a relative comparison method and an expansion method, or adopts a measurement mode combining a dynamic balance method and a static comparison method, can be used for measuring, calibrating and verifying most vacuum degree measurement devices such as Pirani, a film gauge, an ionization gauge, a composite gauge and the like, can also be used for metering and calibrating products such as a heat conduction vacuum gauge, an ionization vacuum gauge, a piezoresistance vacuum gauge, a standard leak hole and the like, can be applied to the fields of packaging, electricity, medical treatment, food processing, automobile industry and the like, and has better vacuum application technical advantages and accurate data processing capability. Generally, the overall dimension of a common vacuum gauge calibrator is about 700 × 600 × 1200(mm), and a vacuum calibration device of the common multifunctional vacuum gauge calibrator mainly comprises a vacuum calibration chamber, a vacuum pumping system, a leak calibration system, and an electrical control and signal acquisition system. The common vacuum calibration chamber can be regarded as a main body part of the whole detection device in terms of volume, the rest is a part of a configuration cabinet body for power distribution or for installing an air pump and the like, the vacuum calibration chamber and the configuration cabinet are generally arranged in a split mode, the vacuum calibration chamber is clamped on the configuration cabinet body, and the vacuum calibration chamber and the configuration cabinet occupy about 99% of the total volume. But the configuration cabinet is convenient for remove the transport for the square body shape of rule, and conventional spherical vacuum calibration room structural shape is not just like square body rule, and occupation space is great, and spherical vacuum calibration room not only is not convenient for pack in the transportation, and the transportation in the use is carried and is removed also inconvenient, has brought some inconvenient puzzlements for practical application, if spherical vacuum calibration room produces the roll and can collide the electronic components such as sensor of bad installation in automobile transportation, brings the loss.

SUMMERY OF THE UTILITY MODEL

The utility model provides a movable vacuum calibration device, which solves the technical problems that the spherical vacuum calibration chamber occupies a large space and is inconvenient to package and transport and move in use.

The utility model provides a mobile vacuum calibration device, which is characterized by comprising:

the lifting box seat is internally provided with a lower arc base, the lower arc base is provided with a hook edge ring, and the outer side of the hook edge ring is provided with a conical sealing surface;

the middle arc sleeve seat is in clearance fit with the outer part of the lower arc base, and concave lock inclined slideways are uniformly distributed on the upper end surface of the middle arc sleeve seat;

the lifting box body is internally provided with an upper arc seat, and the outer ring of the lower end of the upper arc seat is provided with a hanging edge sealing ring;

the arc distribution sleeve is in clearance fit with the outer part of the upper arc seat, and convex locking blocks are uniformly distributed on the lower end surface of the arc distribution sleeve;

the limiting and centering sliding bar is respectively in sliding fit with the middle arc sleeve seat and the arc matching sleeve;

and the stable locking connecting bolt is used for connecting and locking the lower arc base, the middle arc sleeve seat, the upper arc seat and the arc matching sleeve.

Preferably, the inner side of the lower end of the middle arc sleeve seat is provided with a ring opening platform edge, the inner ring of the ring opening platform edge is provided with a smooth conical surface, the ring opening platform edge and the hook edge form a hook, and the smooth conical surface and the conical sealing surface are attached at the same angle to form hard sealing connection.

Preferably, the upper end of the arc matching sleeve is provided with a configuration ring, and the configuration ring is connected with the hanging edge sealing ring in a sealing hook mode.

Preferably, the limiting and centering sliding rod can be respectively arranged between the lower arc base and the middle arc sleeve seat or between the upper arc seat and the arc matching sleeve for sliding fit.

Preferably, the convex lock block is in sliding fit with the concave lock inclined slideway, and the middle arc sleeve seat and the arc matching sleeve are aligned and locked.

Preferably, the number of the convex lock blocks is equal to that of the concave lock inclined slideways.

Preferably, the concave lock oblique slideway comprises a sinking port and an oblique arc groove, and the oblique arc groove is arranged on one side of the sinking port and is communicated with the sinking port.

Preferably, the convex lock block is inserted into the countersunk hole and is in clearance fit with the countersunk hole, and the convex lock block is in sliding fit with the oblique arc groove.

Preferably, the inclined arc groove is in a downward arc groove shape with uniform inclination.

Preferably, the convex lock blocks and the concave lock inclined slide ways are uniformly and concentrically and symmetrically distributed.

The utility model has the beneficial effects that: the utility model adopts the connection of the lower arc base, the middle arc sleeve seat, the upper arc seat and the arc matching sleeve to form a vacuum cavity, the middle arc sleeve seat and the arc matching sleeve can be respectively sleeved on the lower arc base and the upper arc seat to be contracted, and the carrying box seat and the carrying box body are respectively used for carrying, the split type split structure ensures that the size of the whole structure is effectively reduced, the packaging volume is extremely small, and the split type arc-shaped vacuum bag is convenient to carry, move and transport and is stored in a narrow space.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1 in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a lower arc base in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a middle arc socket in an embodiment of the present invention;

FIG. 5 is a schematic view of the direction A-A in FIG. 2 according to an embodiment of the present invention;

FIG. 6 is a schematic view of the direction B-B in FIG. 2 according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an embodiment of the present invention.

Reference numerals: 1-carrying case seat, 11-tightening screw rod, 2-lower arc base, 21-hook edge ring, 22-conical sealing surface, 23-spherical cavity, 3-middle arc sleeve seat, 31-ring opening edge, 32-smooth conical surface, 33-concave lock inclined slideway, 331-countersunk mouth, 332-inclined arc groove, 34-convex dense ring, 4-upper carrying case body, 5-upper arc seat, 51-edge hanging sealing ring, 6-arc matching sleeve, 61-configuration ring, 62-convex locking block, 63-concave dense groove, 7-limiting and centering sliding rod, and 8-stable lock connecting bolt.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

As an example, as shown in fig. 1 to 7, the present invention provides a mobile vacuum calibration device, which includes a carrying case base 1, a tightening screw 11, a lower arc base 2, a hook edge ring 21, a tapered sealing surface 22, a ball cavity 23, a middle arc sleeve base 3, a ring opening platform ridge 31, a smooth tapered surface 32, a concave lock inclined slideway 33, a sunken opening 331, an inclined arc groove 332, a convex dense ring 34, an upper carrying case 4, an upper arc base 5, a hanging edge sealing ring 51, a matched arc sleeve 6, a matched ring 61, a convex lock block 62, a concave dense groove 63, a limiting righting slide bar 7 and a stable lock connecting bolt 8.

In the embodiment, referring to fig. 1 to 3, the carrying case base 1 is a rectangular case made of an aluminum-plastic plate, a lower arc base 2 is arranged in the carrying case base 1, the lower arc base 2 is made of a stainless steel material, the outer portion of the lower arc base 2 is cylindrical, a hook edge ring 21 is arranged on the lower arc base 2, the hook edge ring 21 and the lower arc base 2 are integrally made, the hook edge ring 21 is turned and polished outside the ring 21 to form a conical sealing surface 22, the light precision of the conical sealing surface 22 is high, the lower portion of the lower arc base 2 can be connected with a case bottom bolt of the carrying case base 1 through a back plate, a ball cavity 23 can be arranged inside the lower arc base 2, and the arc surface of the ball cavity 23 is milled on the lower arc base 2. Referring to fig. 4, a middle arc sleeve seat 3 is sleeved outside a lower arc base 2, the middle arc sleeve seat 3 is in clearance fit with the lower arc base 2, an annular opening platform edge 31 is arranged on the inner side of the lower end of the middle arc sleeve seat 3, the annular opening platform edge 31 and the middle arc sleeve seat 3 are integrally manufactured, a smooth conical surface 32 is machined on the inner ring of the annular opening platform edge 31, and the inclination of the smooth conical surface 32 is the same as that of the conical sealing surface 22. In this embodiment, referring to fig. 2, the limiting and centering sliding bar 7 is a smooth-column sliding bar, a plurality of limiting and centering sliding bars 7 may be provided, the limiting and centering sliding bars 7 may be perpendicular to and welded to a back plate of the lower arc base 2, the upper end of the limiting and centering sliding bar 7 penetrates into the middle arc sleeve base 3 and is in sliding fit with the middle arc sleeve base 3 to center the position of the middle arc sleeve base 3, in this embodiment, the limiting and centering sliding bars 7 may be evenly distributed along the circumference in four equal parts, and the axis of the limiting and centering sliding bar 7 is coaxial with the axis of the lower arc base 2, so that the middle arc sleeve base 3 can smoothly slide up and down on the lower arc base 2. When the middle arc sleeve base 3 moves upwards, the ring opening platform edge 31 of the middle arc sleeve base 3 can be hooked, touched and connected with the hook of the lower arc base 2 along the ring 21, the smooth conical surface 32 of the ring opening platform edge 31 can be attached to the conical sealing surface 22 of the hook along the ring 21, four jacking screw rods 11 additionally arranged outside the lower arc base 2 are used for carrying out screw rod-shaped jacking, the locking of the positions between the lower arc base 2 and the middle arc sleeve base 3 is guaranteed, and the good ultra-high pressure resistant hard sealing connection is effectively guaranteed to be formed between the smooth conical surface 32 and the conical sealing surface 22, so that the lower arc base 2 and the middle arc sleeve base 3 are locked to form a whole, and the lower arc base 2 and the middle arc sleeve base 3 form a hemispherical hollow cavity inside. Referring to fig. 1, 2, 4 and 5, concave locking oblique slideways 33 may be uniformly distributed on the upper end surface of the middle arc sleeve base 3, the concave locking oblique slideways 33 may be composed of a countersink 331 and an oblique arc groove 332, the oblique arc groove 332 and the countersink 331 are milled on the middle arc sleeve base 3, the countersink 331 is in a square pothole shape, the oblique arc groove 332 is disposed on one side of the countersink 331 and is communicated with the countersink 331, the oblique arc groove 332 is in a downward arc groove shape which is uniformly inclined, the oblique arc groove 332 is in a shape of a protruding edge of a barb, so as to facilitate later hooking and connecting the mating arc sleeve 6. The end surface of the middle arc sleeve seat 3 can be also integrally provided with a convex close ring 34, and the convex close ring 34 is a circular polished metal sealing ring.

In the embodiment, referring to fig. 1, 2 and 6, the upper carrying case body 4 may be the same as the carrying case seat 1, an upper arc seat 5 is arranged in the upper carrying case body 4, and a hanging edge sealing ring 51 is integrally arranged on an outer ring at the lower end of the upper arc seat 5; go up the outside of arc seat 5 and be provided with and join in marriage arc cover 6, join in marriage arc cover 6 with go up the outside clearance fit of arc seat 5, join in marriage arc cover 6 upper end an organic whole and be provided with configuration ring 61, configuration ring 61 with hang and to carry out leakproofness's hook connection along sealing ring 51. The connection form of the upper carrying case body 4, the upper arc seat 5 and the arc matching sleeve 6 can be the same as the matching connection form of the carrying case seat 1, the lower arc base 2 and the middle arc sleeve seat 3 introduced above, a hemispherical cavity is formed inside the upper arc seat 5 and the arc matching sleeve 6 after the connection, the hemispherical cavity can form a spherical whole circular cavity with the cavity formed inside the lower arc base 2 and the middle arc sleeve seat 3, and the circular cavity can be used as a calibration chamber. The lower end face of the arc matching sleeve 6 is uniformly provided with convex locking blocks 62, the convex locking blocks 62 and the arc matching sleeve 6 are integrally manufactured, and the convex locking blocks 62 and the concave locking inclined slide ways 33 are the same in quantity and are correspondingly inserted and matched for connection. In an embodiment, the upper end surface of the arc fitting sleeve 6 can be machined with a concave-dense groove 63, and the concave-dense groove 63 can be matched with the convex-dense ring 34, interference fit connection. When the arc matching sleeve 6 is in butt joint with the middle arc sleeve seat 3, the convex locking block 62 of the arc matching sleeve 6 is correspondingly inserted into the countersunk opening 331 of the middle arc sleeve seat 3, the arc matching sleeve 6 is rotated clockwise to enable the convex locking block 62 to be hooked in the oblique arc groove 332 and to be connected and compressed between the arc matching sleeve 6 and the arc sleeve seat 3, secondary bolting and compression can be carried out between the arc matching sleeve 6 and the arc sleeve seat 3 through the stable locking connecting bolt 8, the concave groove 63 and the convex dense ring 34 are ensured to be mutually inserted to form sealing under larger bolting force, and the vacuum can bear 1 multiplied by 10^-6Within the range of Pa, the arc matching sleeve 6 and the arc sleeve seat 3 are ensured to be stably and reliably connected to form a vacuum calibration chamber. The utility model protects does not protect vacuum detection calbiration system for components of a whole that can function independently constitutional part, does not describe to this in detail, in practical application, can install measurement level electric capacity membrane gauge, electromagnetism valves, pipeline subassembly, high accuracy gas mass flowmeter and INFICON CDG CUBE standard measurement level film vacuum gauge etc. additional on joining in marriage arc cover 6 and the arc cover seat 3, can also dispose signal input output interface, the on-line measuring sensor of being convenient for and reading standard sensor signal.

In an embodiment, the lower arc base 2 and the middle arc sleeve base 3 are detachable from the calibration chamber formed by the upper arc base 5 and the mating arc sleeve 6. After the middle arc sleeve seat 3 is separated from the arc matching sleeve 6, the middle arc sleeve seat 3 can be sleeved on the lower arc base 2, and the arc matching sleeve 6 can be sleeved on the upper arc seat 5. As shown in fig. 7, after the tightening screw 11 is detached, the middle arc sleeve seat 3 can be sleeved on the lower arc base 2 to be shrunk and completely arranged in the carrying case seat 1, at this time, the cover of the carrying case seat 1 can be closed, and the detached tightening screw 11 and other bolts can be placed in the carrying case seat 1 to be lost, so that the tightening screw is convenient to apply again during assembly. Similarly, the upper arc seat 5 and the arc matching sleeve 6 can also be retracted into the upper carrying case 4 for containing. The whole calibrating device main part of split type design of this device, two box body parts that part have simultaneously can stretch out and draw back and reduce the volume, and the packing of being convenient for saves space, is convenient for remove again, carry the case seat 1 with on carry and all can install the universal wheel additional on the box 4, the removal in the later stage of being convenient for is used, and is small, portable, transportation. The utility model adopts the connection of the lower arc base 2, the middle arc sleeve seat 3, the upper arc seat 5 and the arc matching sleeve 6 to form a vacuum cavity, the middle arc sleeve seat 3 and the arc matching sleeve 6 can be sleeved on the lower arc base 2 and the upper arc seat 5 respectively to contract pairwise, and are respectively carried by the carrying box seat 1 and the upper carrying box body 4, the split type split structure ensures that the overall structure size can be effectively reduced, the packaging volume is reduced, and the carrying, the moving and the transportation are convenient, and the storage in a narrow space is convenient.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A mobile vacuum calibration device, characterized in that it comprises:

the box lifting seat is internally provided with a lower arc base, the lower arc base is provided with a hook edge ring, and the outer side of the hook edge ring is provided with a conical sealing surface;

2. The mobile vacuum calibration device according to claim 1, wherein the inner side of the lower end of the middle arc sleeve seat is provided with a ring opening platform edge, the inner ring of the ring opening platform edge is provided with a smooth conical surface, the ring opening platform edge and the hook form a hook along a ring, and the smooth conical surface and the conical sealing surface are attached at the same angle to form a hard sealing connection.

3. The mobile vacuum calibration device of claim 1, wherein the upper end of the arc fitting sleeve is provided with a configuration ring, and the configuration ring is in a sealed hooking connection with the hanging edge sealing ring.

4. The mobile vacuum calibration device of claim 1, wherein the limiting and centering slide bar is disposed between the lower arc base and the middle arc sleeve seat or between the upper arc seat and the arc sleeve for sliding fit, respectively.

5. The mobile vacuum calibration device of claim 1, wherein the male locking piece is slidably engaged with the female locking ramp and aligns and locks the middle arc sleeve holder with the mating arc sleeve.

6. The mobile vacuum calibration device of claim 5 wherein the number of male lock blocks and female lock ramps is equal.

7. The mobile vacuum calibration device of claim 6, wherein the female lock ramp comprises a countersink and a ramp channel disposed on one side of the countersink and in communication with the countersink.

8. The mobile vacuum calibration device of claim 7 wherein the male locking tab is inserted into the counter sink and is a clearance fit, the male locking tab being a sliding fit with the oblique arc slot.

9. The mobile vacuum calibration device of claim 7, wherein the inclined arc groove is shaped as a downward uniformly inclined arc groove.

10. The mobile vacuum calibration device of claim 6, wherein the male locking blocks are uniformly concentrically and symmetrically distributed with the female locking ramp.