CN220416563U

CN220416563U - Distance-adjustable vacuumizing connecting device

Info

Publication number: CN220416563U
Application number: CN202321781318.9U
Authority: CN
Inventors: 石聆孜
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-01-30
Anticipated expiration: 2033-07-07

Abstract

The utility model relates to the field of vacuumizing connection devices and discloses a distance-adjustable vacuumizing connection device which comprises a machine body, wherein a connecting pipe is fixedly connected to the left part of the machine body, sliding grooves are formed in the middle of the left side and the right side of the connecting pipe, telescopic grooves are formed in the opposite sides of the two sliding grooves, pull rods are connected in the sliding grooves in a sliding mode, clamping blocks are fixedly connected to the opposite sides of the two pull rods, two tension springs which are distributed up and down are arranged on the opposite sides of the two clamping blocks, an external connection pipe is connected in the connecting pipe in a sliding mode, a sealing ring is fixedly connected to the left side of the external connection pipe, a clamping groove is formed in the right part of the external connection pipe, and a connecting sleeve is connected to the periphery of the external connection pipe in a sliding mode. According to the utility model, the clamping blocks are gathered and clamped into the clamping grooves, so that the vacuumizing connecting device is rapidly installed, and the distance between the vacuum pump and the refrigerating equipment can be adjusted through the cooperation of the connecting sleeve, the external connecting pipe and the sealing ring.

Description

Distance-adjustable vacuumizing connecting device

Technical Field

The utility model relates to the field of vacuum connection devices, in particular to a distance-adjustable vacuum connection device.

Background

Vacuum pumping is an indispensable important process before refrigerant filling in the production or maintenance process of refrigeration equipment. Mainly for removing non-condensable gas in the system: the existence of non-condensable gas can raise the condensing pressure of the system, raise the exhaust temperature and influence the refrigerating effect; the lubricant oil can be carbonized at high temperature, so that the normal operation of the compressor is endangered, and even the motor of the compressor is burnt out; removing moisture from the system: moisture is the largest killer in refrigeration systems (particularly in freon systems in vapor compression refrigeration cycles), and firstly, the lubricating oil reacts with the moisture to generate acid, which can corrode the system and cause a copper plating phenomenon to damage a compressor; meanwhile, water can cause icing in a valve port or a capillary tube of the expansion valve, and ice blockage occurs.

When the vacuum pump is in vacuum pumping, a connecting device is needed to be used for connecting the vacuum pump with the refrigerating equipment, the existing vacuum pumping connecting device is usually a plastic hose, the stretchable length is limited, and the connecting device is usually fixed on the vacuum pump and the refrigerating equipment through screws or iron wires, so that a large amount of time can be consumed in the process of installing the vacuum pumping connecting device, the time cost is increased, and the overall efficiency is reduced. For this purpose, an adjustable-distance vacuum connection device is proposed to solve the above problems.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a distance-adjustable vacuumizing connecting device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an adjustable distance's evacuation connecting device, includes the fuselage, the left portion fixedly connected with connecting pipe of fuselage, connecting pipe left and right sides middle part all is provided with the spout, two spout is provided with the expansion tank in opposite directions one side, the inside sliding connection of spout has the pull rod, two the pull rod is fixedly connected with fixture block in opposite directions one side, two the fixture block is provided with the extension spring of two upper and lower distributions in opposite directions one side, the inside sliding connection of connecting pipe has the outer tube, outer tube left side fixedly connected with sealing washer, outer tube right part is provided with the draw-in groove, outer tube periphery sliding connection has coupling sleeve.

As a further description of the above technical solution:

the fixture block sets up inside the expansion tank and sliding connection is inside the draw-in groove.

As a further description of the above technical solution:

and one end, far away from the clamping block, of the pull rod is fixedly connected with a sealing gasket.

As a further description of the above technical solution:

the sliding groove is communicated with the inside of the connecting pipe through the telescopic groove.

As a further description of the above technical solution:

the right side of the connecting pipe is fixedly connected with a plurality of evenly distributed fixing rings, and the machine body is connected with the fixing rings through screws.

As a further description of the above technical solution:

the inside diameter of the connecting pipe is matched with the diameter of the external connecting pipe, and the inside diameter of the connecting sleeve is smaller than the diameter of the sealing ring by 3mm.

As a further description of the above technical solution:

the width of the clamping block is matched with the width of the telescopic groove, and the diameter of the pull rod is matched with the diameter of the sliding groove.

The utility model has the following beneficial effects:

1. according to the utility model, the pull rod is pulled to drive the two clamping blocks to move reversely, the external pipe is connected into the connecting pipe, the pull rod is loosened after connection, and the two clamping blocks are gathered and clamped into the clamping groove through tension generated by the tension spring, so that the external pipe is quickly installed, a great amount of time is consumed in a method of fixing the external pipe on the periphery of the pump body connecting pipe by using the iron wire, and the iron wire is loosened to cause falling, so that the vacuumizing efficiency is reduced.

2. According to the utility model, the distance between the vacuum pump and the refrigeration equipment can be adjusted by matching the connecting sleeve, the external connecting pipe and the sealing ring, so that the inconvenience of vacuumizing caused by the distance is avoided.

Drawings

FIG. 1 is a schematic diagram of a distance-adjustable vacuum connection device according to the present utility model;

fig. 2 is a schematic view of a connection sleeve of a distance-adjustable vacuum connection device according to the present utility model

FIG. 3 is a schematic view of a connection pipe of a distance-adjustable vacuum connection device according to the present utility model;

FIG. 4 is a schematic diagram of a telescopic slot of a distance-adjustable vacuum connection device according to the present utility model;

fig. 5 is a schematic diagram of a fixture block structure of a distance-adjustable vacuum connection device according to the present utility model.

Legend description:

1. a connection sleeve; 2. a connecting pipe; 3. a body; 4. an outer connecting pipe; 5. a seal ring; 6. a sealing gasket; 7. a clamping block; 8. a pull rod; 9. a chute; 10. a telescopic slot; 11. a tension spring; 12. a clamping groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, one embodiment provided by the present utility model is: the utility model provides an adjustable distance's evacuating connecting device, including fuselage 3, fuselage 3 left portion fixedly connected with connecting pipe 2, connecting pipe 2 left and right sides middle part all is provided with spout 9, two spout 9 are provided with expansion tank 10 in opposite sides, the inside sliding connection of spout 9 has pull rod 8, two pull rod 8 are fixedly connected with fixture block 7 in opposite sides, two fixture block 7 are provided with two extension springs 11 that distribute from top to bottom in opposite sides, connecting pipe 2 inside sliding connection has outer tube 4, outer tube 4 left side fixedly connected with sealing washer 5, seal the junction of connecting sleeve 1 and outer tube 4 through sealing washer 5, outer tube 4 right part is provided with draw-in groove 12, outer tube 4 periphery sliding connection has connecting sleeve 1, when connecting evacuating with the refrigeration plant with the vacuum pump, draw outer tube 4 and connecting sleeve 1 in the length stretch to be fit for the distance between the vacuum pump in with the refrigeration plant, pull rod 8, two pull rod 8 drive two fixture blocks 7 and carry out the reverse motion, loosen the outer tube 4 and connect into connecting pipe 2 inside, finally, loosen 8 produces draw-in groove 12 with two fixture blocks 7, make outer tube 4 connect into the draw-in groove 12 fast.

The fixture block 7 sets up inside the expansion tank 10 and sliding connection is inside draw-in groove 12, fixture block 7 one end fixedly connected with is sealed fills up 6 are kept away from to pull rod 8, spout 9 is linked together through expansion tank 10 and inside connecting pipe 2, a plurality of evenly distributed's of connecting pipe 2 right side fixedly connected with solid fixed ring, fuselage 3 passes through the screw and is connected with solid fixed ring, connecting pipe 2 inboard diameter and external pipe 4 diameter assorted, connecting pipe 1 inboard diameter is less than sealing washer 5 diameter 3mm, ensure sealed effect is sufficient, fixture block 7 width and expansion tank 10 width assorted, pull rod 8 diameter and spout 9 diameter assorted, ensure that pull rod 8 can smooth and easy the slip.

Working principle: when the vacuum pump and the refrigerating equipment are connected and vacuumized by using the vacuumizing connecting device, the outer connecting pipe 4 and the connecting sleeve 1 are pulled firstly, the lengths of the outer connecting pipe 4 and the connecting sleeve 1 are pulled to be suitable for the distance between the vacuum pump and the refrigerating equipment, the pull rod 8 is pulled, the two pull rods 8 drive the two clamping blocks 7 to move reversely, the outer connecting pipe 4 is connected into the connecting pipe 2, the pull rod 8 is loosened finally, the two clamping blocks 7 are closed together by generating pulling force through the tension spring 11, the clamping blocks 7 are clamped into the clamping grooves 12, and the outer connecting pipe 4 is connected with the connecting pipe 2 rapidly.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model 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, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides an adjustable distance's evacuation connecting device, includes fuselage (3), its characterized in that: fuselage (3) left part fixedly connected with connecting pipe (2), connecting pipe (2) left and right sides middle part all is provided with spout (9), two spout (9) are provided with expansion tank (10) in opposite directions one side, inside sliding connection of spout (9) has pull rod (8), two pull rod (8) are fixedly connected with fixture block (7) in opposite directions one side, two fixture block (7) are provided with extension spring (11) of distributing from top to bottom in opposite directions one side, connecting pipe (2) inside sliding connection has outer takeover (4), outer takeover (4) left side fixedly connected with sealing washer (5), outer takeover (4) right part is provided with draw-in groove (12), outer takeover (4) periphery sliding connection has connecting sleeve (1).

2. The distance-adjustable vacuum connection of claim 1, wherein: the clamping block (7) is arranged inside the telescopic groove (10) and is in sliding connection with the inside of the clamping groove (12).

3. The distance-adjustable vacuum connection of claim 1, wherein: one end of the pull rod (8) far away from the clamping block (7) is fixedly connected with a sealing gasket (6).

4. The distance-adjustable vacuum connection of claim 1, wherein: the sliding groove (9) is communicated with the inside of the connecting pipe (2) through a telescopic groove (10).

5. The distance-adjustable vacuum connection of claim 1, wherein: the right side of the connecting pipe (2) is fixedly connected with a plurality of evenly distributed fixing rings, and the machine body (3) is connected with the fixing rings through screws.

6. The distance-adjustable vacuum connection of claim 1, wherein: the inner side diameter of the connecting pipe (2) is matched with the diameter of the outer connecting pipe (4), and the inner side diameter of the connecting sleeve (1) is smaller than the diameter of the sealing ring (5) by 3mm.

7. The distance-adjustable vacuum connection of claim 1, wherein: the width of the clamping block (7) is matched with the width of the telescopic groove (10), and the diameter of the pull rod (8) is matched with the diameter of the sliding groove (9).