CN214276245U

CN214276245U - Low-temperature double-layer linkage cold shield structure

Info

Publication number: CN214276245U
Application number: CN202120331468.4U
Authority: CN
Inventors: 苗增勇
Original assignee: Jiangsu Spinning Machinery Equipment Co ltd
Current assignee: Jiangsu Spinning Machinery Equipment Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-09-24
Anticipated expiration: 2031-02-05

Abstract

The utility model discloses a cold screen structure of double-deck linkage of low temperature, including outer cold screen and interior cold screen, outer support is installed to outer cold screen upper end both sides, the inside guide way of having seted up of outer support, the guide block is installed to interior cold screen both sides, the rack is installed in the guide block outside, the gear is installed through pivot and bearing to the guide way inside, and gear and rack toothing are connected, pivot one end transmission is connected with the motor, the utility model discloses because interior cold screen inserts through the guide block slip and establishes in the guide way of outer cold screen, the rack that installs in the guide block outside in addition is connected with the gear toothing that guide way internally mounted had for can handle through gear and rack internal cold screen lift adjustment, thereby satisfy the cold screen use of co-altitude, be convenient for overhaul maintenance treatment respectively outside cold screen and interior cold screen inside moreover.

Description

Low-temperature double-layer linkage cold shield structure

Technical Field

The utility model relates to a transfer merit ware technical field specifically is a cold shield structure of double-deck linkage of low temperature.

Background

The cryostat is also called a cryostat, and is widely used in biological experiments, medicine, and scientific research institutions in schools. The fully-closed compressor unit is used for refrigerating, and the refrigerating system is provided with an overheating and overcurrent multiple protection device. The circulating pump can lead the constant-temperature liquid in the tank out to establish a second constant-temperature field. The cold liquid in the tank can be led out to cool the experimental container outside the machine, and the low-temperature and constant-temperature experiment can also be directly carried out in the tank. In the operation process of the cryostat, the internal components of the cryostat usually work in a liquid helium temperature zone, and in order to shield the heat radiation of the external environment to the internal components and reduce the evaporation loss of the liquid helium, the cryostat is usually designed with a cold shield.

The low-temperature double-layer linkage cold shield structure with the application number of CN201822205710.4 in the prior art comprises a driving mechanism, a fixed cold shield, a rotary cold shield and a rotary track. The driving mechanism comprises a rotary driving shaft and a bevel gear set, and the rotary driving shaft is in transmission connection with the bevel gear set. The fixed cold shield comprises an outer layer fixed cold shield and an inner layer fixed cold shield. The rotary driving shaft located on the outer layer fixed cold screen drives the bevel gear set to rotate so as to drive the outer layer rotary screen, and therefore the low-temperature double-layer linkage cold screen structure is switched between an open state and a closed state. The utility model discloses a low temperature double-deck linkage cold shield structure is applicable to ultra-high vacuum and low temperature environment, is upgraded into the rotary mode drive by the drive of traditional manipulator stirring mode, improves the convenient degree of operation and reliable degree; the inner and outer layers of rotary cold shields can be coupled with each other, can be opened or closed at the same time, and can also be decoupled. However, the inner cold screen cannot be lifted and adjusted, the use of cold screens with different heights is difficult to meet, and the fixed cold screen and the rotary cold screen are overlapped, so that the maintenance treatment of the inner parts of the outer cold screen and the inner cold screen is inconvenient to overhaul and maintain respectively.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cold screen structure of double-deck linkage of low temperature to solve and to carry out the lift adjustment to the internal cold screen among the prior art and handle, be difficult to satisfy the cold screen of co-altitude and use, owing to fixed cold screen overlaps the setting with the cold screen of rotation, thereby be not convenient for externally cold screen and the inside problem of overhauing the maintenance processing respectively of interior cold screen.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cold screen structure of double-deck linkage of low temperature, includes outer cold screen and interior cold screen, outer support is installed to outer cold screen upper end both sides, the inside guide way of having seted up of outer support, the guide block is installed to interior cold screen both sides, the rack is installed in the guide block outside, the gear is installed through pivot and bearing to the guide way inside, and gear and rack toothing connect, pivot one end transmission is connected with the motor.

Furthermore, a top seat and a base are respectively installed at two ends of the outer cold screen, and a limiting support plate is installed at the upper end of the inner cold screen.

Further, the outer diameter of the inner cold shield is smaller than the inner diameter of the outer cold shield.

Furthermore, the motor adopts a servo motor, and the motor is arranged outside the outer support through the base.

Furthermore, two groups of guide grooves, guide blocks, racks and gears are symmetrically arranged around the outer cold screen.

Furthermore, the outer cold screen and the inner cold screen are both arranged in a hollow cylinder shape.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses because interior cold screen slides through the guide block and inserts and establish in the guide way of cold screen outside, the rack that installs in the guide block outside is connected with the gear engagement that guide way internally mounted has moreover, and pivot one end transmission is connected with the motor for can handle through gear and rack internal cold screen lift adjustment, thereby satisfy the cold screen use of co-altitude, be convenient for moreover to outside cold screen and interior cold screen inside overhaul maintenance processing respectively.

2. The utility model discloses a guide way, guide block, rack and gear are all installed two sets ofly about outer cold screen symmetry, are convenient for support the processing to outer cold screen outside both ends transmission simultaneously, are favorable to improving lift adjustment's stability.

3. The utility model discloses an footstock and base are installed respectively to outer cold screen both ends, are convenient for carry out the erection bracing to outer cold screen and handle, and interior cold screen installs spacing extension board in the upper end for carry out spacing processing on inner cold screen upper portion.

Drawings

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

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the holder of the present invention;

fig. 3 is a schematic view of a connection structure of the first gear and the second gear of the present invention.

In the figure: 1. an external cold screen; 2. an internal cooling screen; 3. a limiting support plate; 4. a guide block; 5. an outer support; 6. a motor; 7. a rack; 8. a rotating shaft; 9. a gear; 10. a bearing; 11. a top seat; 12. a base; 13. a guide groove.

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.

Please refer to fig. 1, fig. 2, fig. 3, in the embodiment of the present invention, a low-temperature double-layer linkage cold shield structure, including outer cold shield 1 and inner cold shield 2, outer support 5 is installed to outer cold shield 1 upper end both sides, guide way 13 has been seted up inside outer support 5, guide block 4 is installed to inner cold shield 2 both sides, because the outer side of inner cold shield 2 slides through guide block 4 and inserts and establish in guide way 13 of outer cold shield 1's spacing extension board 3, thereby be convenient for insert interior cold shield 2 and slide and establish outside cold shield 1 inside, rack 7 is installed in the guide block 4 outside, gear 9 is installed through pivot 8 and bearing 10 to guide way 13 inside, and gear 9 and rack 7 mesh are connected, pivot 8 one end transmission is connected with motor 6, make can handle through gear 9 and rack 7 to inner cold shield 2 lift adjustment, thereby satisfy the cold shield use of different heights.

Preferably, the footstock 11 and the base 12 are respectively installed at two ends of the external cold shield 1, so that the external cold shield 1 is convenient to install, support and process, and the limiting support plate 3 is installed at the upper end of the internal cold shield 2 and is used for limiting the upper part of the internal cold shield 2.

Preferably, the outer diameter of the inner cold shield 2 is smaller than the inner diameter of the outer cold shield 1, so that the inner cold shield 2 is conveniently inserted and fixed in the outer cold shield 1.

Preferably, the motor 6 is a servo motor, and the motor 6 is mounted outside the outer seat 5 through a base.

Preferably, two sets of guide way 13, guide block 4, rack 7 and gear 9 are all installed about outer cold screen 1 symmetry, are convenient for support the processing to the transmission simultaneously in outer cold screen 1 outside both ends, are favorable to improving lift adjustment's stability.

Preferably, the outer cold shield 1 and the inner cold shield 2 are both arranged in a hollow cylinder shape.

The utility model discloses a theory of operation and use flow: because the inside 2 outside cold shields are slided through guide block 4 and are inserted and establish in the guide way 13 of the spacing extension board 3 of outer cold shield 1, thereby be convenient for slide insert with inside cold shield 2 and establish outside cold shield 1 inside, and rack 7 that the guide block 4 outside was installed is connected with the inside gear 9 meshing of

guide way

13, 8 one end transmission of pivot is connected with motor 6, make and to handle the internal 2 lift adjustment of cold shield through gear 9 and rack 7, thereby satisfy the cold shield use of co-altitude, and when 2 liter values upper ends of internal cold shield, can make outside cold shield 1 and the inside outside of internal cold shield 2 expose in the outside, thereby be convenient for overhaul maintenance treatment respectively to outside cold shield 1 and internal cold shield 2 insides.

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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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 a cold screen structure of double-deck linkage of low temperature, includes outer cold screen (1) and interior cold screen (2), its characterized in that: outer support (5) are installed to outer cold screen (1) upper end both sides, guide way (13) have been seted up to outer support (5) inside, guide block (4) are installed to interior cold screen (2) both sides, rack (7) are installed in guide block (4) outside, gear (9) are installed through pivot (8) to guide way (13) inside, and gear (9) and rack (7) meshing are connected, pivot (8) one end transmission is connected with motor (6).

2. The low-temperature double-layer linkage cold screen structure according to claim 1, characterized in that: a top seat (11) and a base (12) are respectively installed at two ends of the outer cold screen (1), and a limiting support plate (3) is installed at the upper end of the inner cold screen (2).

3. The low-temperature double-layer linkage cold screen structure according to claim 1, characterized in that: the outer diameter of the inner cold shield (2) is smaller than the inner diameter of the outer cold shield (1).

4. The low-temperature double-layer linkage cold screen structure according to claim 1, characterized in that: the motor (6) adopts a servo motor, and the motor (6) is arranged on the outer side of the outer base (5) through the base.

5. The low-temperature double-layer linkage cold screen structure according to claim 1, characterized in that: two groups of guide grooves (13), guide blocks (4), racks (7) and gears (9) are symmetrically arranged on the outer cold shield (1).

6. The low-temperature double-layer linkage cold screen structure according to claim 1, characterized in that: the outer cold screen (1) and the inner cold screen (2) are both arranged in a hollow cylinder shape.