Vacuum air extractor

Abstract

The utility model belongs to the technical field of air exhaust devices, and discloses a vacuum air exhaust device which comprises an air exhaust device body and an air exhaust pipe installed on the side wall of the air exhaust device body, an arc-shaped groove is formed in the upper surface of the air exhaust pipe, a filter screen is arranged on the inner wall of the air exhaust pipe, an arc-shaped frame is arranged in the arc-shaped groove, and the filter screen is arranged in the arc-shaped frame. And a fixing assembly for fixing the arc-shaped frame is arranged on the exhaust pipe. The air exhaust motor has the effect of reducing the vibration probability of the arc-shaped frame when the air exhaust motor works.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of vacuum air extractor, in particular to a kind of vacuum air extractor. BACKGROUND

[0002] Vacuum packaging machine, a kind of can automatically extract the air in packaging bag and reach the equipment of the completion of sealing process after predetermined vacuum degree.User can also be filled with nitrogen or other mixed gas, then complete sealing process.Vacuum packaging machine is often used in food industry, industrial product packaging, etc., because after vacuum packaging, goods can be oxidation-resistant, dustproof, etc., so as to achieve long-term preservation, convenient transportation, etc.Objective.In prior art, vacuum packaging machine is usually extracted by air extractor to extract the air in packaging bag.The air in packaging bag is often mixed with impurities, these impurities can enter the air extraction pipeline during air extraction process, with the use of vacuum packaging machine, impurities can be deposited in air extraction pipeline, block air extractor, seriously affect production efficiency.

[0003] In the Chinese utility model patent with disclosure number CN220682779U, a kind of vacuum packaging air extractor is disclosed, including device shell, air extraction motor, the top of air extraction pipe is opened with movable slot, the inner side of movable slot is movably connected with arc frame, arc frame and the inner side of movable slot are provided with heteromagnetic magnet, the front and back of arc frame are all opened with cylindrical hole, the inner side of cylindrical hole is movably sleeved with cylindrical block, the end of cylindrical block away from arc frame is fixedly connected with round sheet, the outer side of round sheet is movably sleeved with No.1 spring, the inner side of arc frame is movably sleeved with filter screen, the front and back of filter screen are all opened with telescopic hole, the inner side of telescopic hole is fixedly connected with No.2 spring, the other end of No.2 spring is fixedly connected with wedge-shaped block, by being provided with the filter assembly of being convenient for installation and disassembly, the impurities of air extraction process can be intercepted, by the cooperation between cylindrical hole and wedge-shaped block and the setting of heteromagnetic magnet, filter screen can be quickly installed and dismounted.

[0004] For the related technology in the above, the inventor believes that the following defects exist: the above-mentioned device connects arc frame and air extraction pipe by heteromagnetic magnet, and the connection between arc frame and air extraction pipe is poor.In actual use, when the staff starts the air extraction motor, the arc frame is easy to vibrate when the gas passes through the air extraction pipe quickly, which can cause the noise of the air extraction device to be large and the use experience to be poor. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a kind of vacuum air extractor.

[0006] The technical scheme of the above technical purpose is realized by the following technical scheme: a vacuum air extraction device, comprising an air extraction device main body and an air extraction pipe mounted on the side wall of the air extraction device main body, an arc-shaped groove is formed on the upper surface of the air extraction pipe, a filter screen is arranged on the inner wall of the air extraction pipe, an arc-shaped frame is arranged in the arc-shaped groove, and a fixing assembly for fixing the arc-shaped frame is arranged on the air extraction pipe.

[0007] Further, two mutually symmetrical fixing rods are arranged on the side wall of the filter screen, and two mutually matching fixing grooves are formed on the inner bottom wall of the arc-shaped groove.

[0008] By adopting the above technical scheme, when the staff needs to install the filter screen, the staff only needs to connect the filter screen and the inner wall of the air extraction pipe, so that the fixing rod and the fixing groove are connected, thereby preliminarily stabilizing the filter screen. Further, the staff only needs to connect the arc-shaped frame and the arc-shaped groove, so that the connecting rod and the sliding groove are connected, thereby stabilizing the connecting rod under the action of the fixing assembly, and further stabilizing the arc-shaped frame, thereby reducing the probability of shaking of the filter screen when the air extraction device is opened. Then, the staff only needs to open the air extraction device in the air extraction device main body, so that the air extraction device main body extracts air from the target area.

[0009] Further, a sliding groove is formed on the inner bottom wall of the arc-shaped groove, a limiting groove is formed on the inner wall of the sliding groove, the fixing assembly comprises a connecting rod fixed on the bottom surface of the arc-shaped frame, a limiting rod slidingly arranged in the limiting groove, and a compression spring with one end fixed on the side wall of the limiting rod, and the other end of the compression spring is fixed on the inner wall of the limiting groove.

[0010] Further, a limiting hole is formed on the side wall of the connecting rod close to the limiting groove.

[0011] Further, an inclined surface is formed on the upper surface of the limiting rod and the edge of the side wall away from the compression spring.

[0012] By adopting the above technical scheme, when the staff needs to install the arc-shaped frame, the staff needs to connect the arc-shaped frame and the arc-shaped groove, so that the connecting rod is gradually moved into the sliding groove, thereby making the connecting rod abut against the inclined surface, and further making the limiting rod completely move into the limiting groove under the action of the connecting rod. Then, when the limiting groove and the limiting hole are opposite, the limiting rod is connected with the limiting hole under the action of the compression spring, thereby limiting the connecting rod, and further stabilizing the arc-shaped frame.

[0013] Further, a driving rod is rotatably arranged on the side wall of the limiting rod close to the compression spring, a communication groove is formed on the side wall of the air extraction pipe and is in communication with the driving groove, and the other end of the driving rod passes through the communication groove and is slidingly connected.

[0014] Further, the side wall of the driving rod is provided with external threads, and the inner wall of the communication groove is provided with internal threads matched with the external threads.

[0015] By adopting the above technical scheme, when one end of the limiting rod is connected with the limiting hole under the action of the compression spring, the worker only needs to push and rotate the driving rod, so as to connect the external threads with the internal threads, thereby making the limiting rod continue to move towards the limiting hole under the action of the driving rod, and further making the limiting rod abut against the inner wall of the limiting hole, thereby improving the stability of the connecting rod, and further reducing the probability of shaking of the arc-shaped frame.

[0016] Further, the end of the driving rod is fixed with a handle for reducing the difficulty of rotating the driving rod by the worker.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. In the application, when the worker needs to install the filter screen, the worker only needs to connect the filter screen with the inner wall of the suction pipe, so as to connect the fixing rod with the fixing groove, thereby preliminarily keeping the filter screen stable. Further, the worker only needs to connect the arc-shaped frame with the arc-shaped groove, so as to connect the connecting rod with the sliding groove, thereby keeping the connecting rod stable under the action of the fixing assembly, and further keeping the arc-shaped frame stable, thereby reducing the probability of shaking of the filter screen when the suction device is opened. Subsequently, the worker only needs to open the suction device in the suction device main body, so as to suck air in the target area by the suction device main body;

[0019] 2. In the application, when the worker needs to install the arc-shaped frame, the worker needs to connect the arc-shaped frame with the arc-shaped groove, so as to gradually move the connecting rod into the sliding groove, thereby making the connecting rod abut against the inclined surface, and further making the limiting rod completely move into the limiting groove under the action of the connecting rod. Subsequently, when the limiting groove is opposite to the limiting hole, the limiting rod is connected with the limiting hole under the action of the compression spring, thereby limiting the connecting rod by the limiting rod, and further keeping the arc-shaped frame stable.

[0020] 3. In the application, when one end of the limiting rod is connected with the limiting hole under the action of the compression spring, the worker only needs to push and rotate the driving rod, so as to connect the external threads with the internal threads, thereby making the limiting rod continue to move towards the limiting hole under the action of the driving rod, and further making the limiting rod abut against the inner wall of the limiting hole, thereby improving the stability of the connecting rod, and further reducing the probability of shaking of the arc-shaped frame. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic view of the utility model embodiment;

[0022] Figure 2 is a filter screen and its connecting structure schematic diagram of the utility model embodiment;

[0023] Figure 3 is a fixed groove and its connecting structure schematic diagram of the utility model embodiment;

[0024] Figure 4 is a communication groove and its connecting structure schematic diagram of the utility model embodiment;

[0025] Figure 5 is a drive rod and its connecting structure schematic diagram of the utility model embodiment;

[0026] Figure 6 is a fixed assembly and its connecting structure schematic diagram of the utility model embodiment;

[0027] Figure 7 is a limiting rod and its connecting structure schematic diagram of the utility model embodiment.

[0028] In the drawing: 1, air extraction device main body;11, air extraction pipe;2, arc-shaped groove;21, filter screen;3, arc-shaped frame;31, sliding groove;32, limiting groove;4, fixed assembly;41, connecting rod;42, limiting rod;43, compression spring;5, fixed rod;51, fixed groove;6, limiting hole;7, drive rod;71, communication groove;8, handle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application;Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments;Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] As Figures 1-7 shown, the present application discloses a kind of vacuum air extraction device, including air extraction device main body 1, air extraction pipe 11, filter screen 21, arc-shaped frame 3, fixed assembly 4, fixed rod 5, drive rod 7 and handle 8.Air extraction pipe 11 is circular tubular structure, air extraction pipe 11 is installed on the side wall of air extraction device main body 1.The upper surface of air extraction pipe 11 is provided with arc-shaped groove 2, and filter screen 21 is arranged on the inner wall of air extraction pipe 11.Arc-shaped frame 3 is the plate structure of cross section arc, and arc-shaped frame 3 is arranged in arc-shaped groove 2.Fixed rod 5 is, fixed rod 5 is provided with two and symmetrically arranged on the side wall of filter screen 21, and the inner bottom wall of arc-shaped groove 2 is provided with two fixed grooves 51 matched with fixed rod 5.

[0031] The inner bottom wall of the arc-shaped groove 2 is provided with a sliding groove 31, and the inner wall of the sliding groove 31 is provided with a limiting groove 32. The fixing assembly 4 is arranged on the air exhaust pipe 11 and used for fixing the arc-shaped frame 3. The fixing assembly 4 comprises a connecting rod 41, a limiting rod 42 and a compression spring 43. The connecting rod 41 is in the shape of a rectangular rod and is fixed to the bottom surface of the arc-shaped frame 3. The limiting rod 42 is in the shape of a rectangular rod and is arranged in the limiting groove 32 in a sliding mode. One end of the compression spring 43 is fixed to the side wall of the limiting rod 42, and the other end of the compression spring 43 is fixed to the inner wall of the limiting groove 32. The side wall of the connecting rod 41, which is close to the limiting groove 32, is provided with a limiting hole 6, and the upper surface of the limiting rod 42 is provided with an inclined surface on the edge, which is away from the side wall of the compression spring 43.

[0032] When the staff needs to install the arc-shaped frame 3, the staff needs to connect the arc-shaped frame 3 and the arc-shaped groove 2, so that the connecting rod 41 is gradually moved into the sliding groove 31, the connecting rod 41 abuts against the inclined surface, and then the limiting rod 42 is completely moved into the limiting groove 32 under the action of the connecting rod 41. Subsequently, when the limiting groove 32 is opposite to the limiting hole 6, the limiting rod 42 is connected with the limiting hole 6 under the action of the compression spring 43, and then the limiting rod 42 limits the connecting rod 41, so that the arc-shaped frame 3 is kept stable.

[0033] The driving rod 7 is in the shape of a circular rod and is arranged on the side wall of the limiting rod 42, which is close to the compression spring 43, in a rotating mode. The side wall of the air exhaust pipe 11 is provided with a communication groove 71, which is in communication with the driving groove, and the other end of the driving rod 7 penetrates through the communication groove 71 and is connected in a sliding mode. The side wall of the driving rod 7 is provided with external threads, and the inner wall of the communication groove 71 is provided with internal threads, which are matched with the external threads.

[0034] When one end of the limiting rod 42 is connected with the limiting hole 6 under the action of the compression spring 43, the staff only needs to push and rotate the driving rod 7, so that the external threads are connected with the internal threads, the limiting rod 42 is continuously moved towards the limiting hole 6 under the action of the driving rod 7, the limiting rod 42 abuts against the inner wall of the limiting hole 6, the stability of the connecting rod 41 is improved, and the probability of shaking of the arc-shaped frame 3 is further reduced.

[0035] In order to improve the use experience of the staff, the end of the driving rod 7 is fixed with a handle 8, which is used for reducing the difficulty of rotating the driving rod 7 for the staff.

[0036] The working principle of the vacuum air extractor in the embodiment is as follows: when the worker needs to install the filter screen 21, the worker only needs to connect the filter screen 21 with the inner wall of the air extractor pipe 11, so that the fixing rod 5 is connected with the fixing groove 51, thereby preliminarily stabilizing the filter screen 21. Further, the worker only needs to connect the arc-shaped frame 3 with the arc-shaped groove 2, so that the connecting rod 41 is connected with the sliding groove 31, thereby stabilizing the connecting rod 41 under the action of the fixing assembly 4, further stabilizing the arc-shaped frame 3, thereby reducing the probability of shaking of the filter screen 21 when the air extractor is opened. Subsequently, the worker only needs to open the air extractor in the air extractor main body 1, so that the air extractor main body 1 performs air extraction on the target area.

[0037] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A vacuum air extractor comprising an air extractor body (1) and an air extractor tube (11) mounted on the side wall of the air extractor body (1), characterized in that: The upper surface of the air exhaust pipe (11) is provided with an arc-shaped slot (2), the inner wall of the air exhaust pipe (11) is provided with a filter screen (21), the arc-shaped slot (2) is provided with an arc-shaped frame (3), and the air exhaust pipe (11) is provided with a fixing assembly (4) for fixing the arc-shaped frame (3). Two mutually symmetrical fixing rods (5) are arranged on the side wall of the filter screen (21), and two mutually matched fixing grooves (51) are arranged on the inner bottom wall of the arc-shaped slot (2). A sliding groove (31) is arranged on the inner bottom wall of the arc-shaped slot (2), a limiting groove (32) is arranged on the inner wall of the sliding groove (31), the fixing assembly (4) comprises a connecting rod (41) fixed on the bottom surface of the arc-shaped frame (3), a limiting rod (42) slidingly arranged in the limiting groove (32), and a compression spring (43) with one end fixed on the side wall of the limiting rod (42), and the other end fixed on the inner wall of the limiting groove (32).

2. A vacuum air extractor as claimed in claim 1, wherein: A limiting hole (6) is arranged on the side wall of the connecting rod (41) close to the limiting groove (32).

3. A vacuum air extractor as claimed in claim 2, wherein: An inclined surface is arranged on the upper surface of the limiting rod (42) and the side wall away from the compression spring (43).

4. A vacuum air extractor as claimed in claim 3, wherein: A driving rod (7) is rotatably arranged on the side wall of the limiting rod (42) close to the compression spring (43), a communication groove (71) is arranged on the side wall of the air exhaust pipe (11) and communicates with the driving groove, and the other end of the driving rod (7) penetrates through the communication groove (71) and is slidingly connected.

5. A vacuum air extractor as claimed in claim 4, wherein: An outer thread is arranged on the side wall of the driving rod (7), and an inner thread matched with the outer thread is arranged on the inner wall of the communication groove (71).

6. A vacuum air extractor as claimed in claim 5, wherein: A handle (8) for reducing the difficulty of rotating the driving rod (7) by the worker is fixed on the end of the driving rod (7).

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